Ventilation device for energy storage system and energy storage system

Abstract

The utility model relates to the technical field of energy storage, and discloses a ventilation device used for an energy storage system and the energy storage system, the ventilation device used for the energy storage system is installed on an energy storage cabinet and used for cooling an inverter, the energy storage cabinet is provided with an air outlet, the ventilation device comprises a ventilation channel, the ventilation channel is of a hollow structure, and the ventilation channel is provided with an air outlet. Comprising a first connecting section and a second connecting section which are communicated with each other, the first connecting section is communicated with the air outlet, the second connecting section is provided with an air suction opening opposite to the inverter, and the ventilation sectional area of the first connecting section is larger than that of the second connecting section; the air draft assembly is arranged on the first connecting section and used for sucking hot air generated by the inverter into the ventilation channel through the air suction opening and exhausting the hot air out of the energy storage cabinet through the air outlet. The LED lamp has the advantages of being simple in structure and high in heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to a ventilation device and an energy storage system for an energy storage system. Background Technology

[0002] During operation, energy storage systems continuously generate significant amounts of heat from critical electrical components such as battery packs, power supply systems (PCS), and distribution units. If this heat is not dissipated effectively and promptly, it can cause a rapid increase in the internal temperature of the energy storage cabinet, leading to a series of problems: equipment performance degradation, shortened lifespan, and, in extreme cases, thermal runaway, posing a serious threat to the system's safety and stability. Existing energy storage cabinets generally employ a combination of fans and air ducts for passive or active cooling, with the air ducts typically being straight-tube designs. While this approach can alleviate heat accumulation to some extent, its cooling efficiency decreases significantly under high-temperature conditions, making it unsuitable for practical applications. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose a ventilation device for energy storage system with simple structure and high heat dissipation efficiency.

[0004] The technical solution adopted by this utility model to solve its technical problem is a ventilation device for an energy storage system, installed on an energy storage cabinet, used to dissipate heat from the inverter. The energy storage cabinet is provided with an air outlet, and the ventilation device includes:

[0005] The ventilation duct is a hollow structure, including a first connecting section and a second connecting section that are interconnected. The first connecting section is connected to the air outlet, and the second connecting section has an air intake opposite to the inverter. The ventilation cross-sectional area of ​​the first connecting section is larger than that of the second connecting section.

[0006] An exhaust assembly is provided on the first connecting section and is used to draw the hot air generated by the inverter into the ventilation channel through the air intake and exhaust it to the outside of the energy storage cabinet through the air outlet.

[0007] Furthermore, a third connecting segment is provided between the first connecting segment and the second connecting segment. The top of the third connecting segment is flush with the tops of the first connecting segment and the second connecting segment, and the bottom of the third connecting segment is arranged at an angle, with one end flush with the bottom of the first connecting segment and the other end flush with the bottom of the second connecting segment.

[0008] Furthermore, the first connecting section has a receiving groove, and the inner wall of the receiving groove is provided with at least one exhaust port that communicates with the air outlet and the second connecting section respectively, and the exhaust assembly is detachably disposed in the receiving groove and opposite to the exhaust port.

[0009] Furthermore, the exhaust vents are provided in four arrays, with a gap between adjacent exhaust vents, and the exhaust assembly includes four fans corresponding to each exhaust vent.

[0010] Furthermore, the second connection section is located above the inverter and abuts against the outer wall of the inverter, and the air intake is opposite to and connected to the heat dissipation holes of the inverter.

[0011] Furthermore, a buffer structure is provided between the second connection section and the inverter, with one side of the buffer structure abutting against the outer wall of the inverter and the other side abutting against the outer wall of the second connection section.

[0012] Furthermore, the second connecting section is also provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are in the same horizontal plane as the air intake.

[0013] Furthermore, the second connecting section is provided with an air guide on the side away from the first connecting section. The air guide is inclined toward the direction of the first connecting section and forms an acute angle with the horizontal plane.

[0014] The technical problem to be solved by this utility model is to also propose an energy storage system, comprising:

[0015] An energy storage cabinet, which is equipped with an air outlet and an air inlet;

[0016] An inverter, which is located inside the energy storage cabinet;

[0017] A ventilation device, comprising a ventilation duct and an exhaust assembly;

[0018] The ventilation duct is a hollow structure, including a first connecting section and a second connecting section that are interconnected. The first connecting section is connected to the air outlet, and the second connecting section is located on the inverter and has an air intake opposite to the inverter. The ventilation cross-sectional area of ​​the first connecting section is larger than that of the second connecting section.

[0019] The exhaust assembly is located on the first connecting section and is used to draw the hot air generated by the inverter into the ventilation channel through the air intake and discharge it to the outside of the energy storage cabinet through the air outlet.

[0020] Furthermore, the air inlet is provided with a first louver assembly communicating with the outside, the air outlet is provided with a second louver assembly communicating with the outside, and the energy storage cabinet is detachably provided with a first filter structure and a second filter structure. The first filter structure is located between the second louver assembly and the first connecting section, the second filter structure is located on the side of the first louver assembly facing the inside of the energy storage cabinet, and the first connecting section is detachably connected to the first filter structure.

[0021] Compared with the prior art, the present invention has at least the following beneficial effects:

[0022] 1. In this utility model, the ventilation channel includes a first connecting section and a second connecting section that are interconnected. The first connecting section is connected to the air outlet, and the exhaust assembly is disposed on the first connecting section. The second connecting section has an air intake opposite to the inverter, and the ventilation cross-sectional area of ​​the first connecting section is larger than that of the second connecting section. This design significantly increases the airflow velocity in the second connecting section, enhancing the adsorption force on the hot air from the inverter and improving heat dissipation efficiency. Furthermore, the exhaust assembly, located in the low-velocity zone of the first connecting section, reduces airflow resistance and fan load, thereby effectively reducing energy consumption.

[0023] 2. In this utility model, a third connecting section is provided between the first connecting section and the second connecting section. The top of the third connecting section is flush with the tops of the first and second connecting sections, and the bottom of the third connecting section is inclined, with one end flush with the bottom of the first connecting section and the other end flush with the bottom of the second connecting section. This design allows airflow to flow more evenly from the second connecting section to the first connecting section, avoiding local blockages and poor airflow, and further improving heat dissipation efficiency.

[0024] 3. In this utility model, the first connecting section has a receiving groove, and the inner wall of the receiving groove is provided with at least one exhaust port that communicates with the air outlet and the second connecting section respectively. The exhaust assembly is detachably installed in the receiving groove and is opposite to the exhaust port. This design not only improves the convenience of maintenance of the exhaust assembly, but also makes the structure of the ventilation device more compact. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the ventilation device in this utility model.

[0026] Figure 2 This is an exploded view of the ventilation device in this utility model.

[0027] Figure 3 for Figure 2 A structural diagram from another perspective.

[0028] Figure 4This is a schematic diagram of the ventilation device assembled in the energy storage cabinet in this utility model.

[0029] Figure 5 for Figure 4 Exploded view of the local structure.

[0030] Figure 6 This is an exploded view of an energy storage system according to the present invention.

[0031] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0032] 100. Energy storage cabinet; 110. Air outlet; 120. Air inlet; 200. Inverter; 210. Heat dissipation hole; 300. Ventilation channel; 310. First connecting section; 311. Receiving groove; 312. Exhaust vent; 313. Spacing part; 314. First fixing hole; 315. Second fixing hole; 320. Second connecting section; 321. Air intake; 322. Reinforcing rib; 323. Air guide part; 330. Third connecting section; 400. Exhaust assembly; 410. Fan; 500. Buffer structure; 600. First louver assembly; 610. Second louver assembly; 700. First filter structure; 710. Second filter structure. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0038] like Figures 1 to 5 As shown, in this embodiment, a ventilation device for an energy storage system is installed on the energy storage cabinet 100 for heat dissipation of the inverter 200. The energy storage cabinet 100 is provided with an air outlet 110. The ventilation device includes:

[0039] The ventilation duct 300 has a hollow structure and includes a first connecting section 310 and a second connecting section 320 that are interconnected. The first connecting section 310 is connected to the air outlet 110, and the second connecting section 320 has an air intake 321 opposite to the inverter 200. The ventilation cross-sectional area of ​​the first connecting section 310 is larger than that of the second connecting section 320.

[0040] The exhaust assembly 400, located on the first connecting section 310, draws hot air generated by the inverter 200 through the intake port 321 into the ventilation channel 300, and exhausts it to the outside of the energy storage cabinet 100 through the outlet 110. This design significantly increases the airflow velocity in the second connecting section 320, enhancing the adsorption force on the hot air from the inverter 200 and improving heat dissipation efficiency. Furthermore, the exhaust assembly 400, positioned within the low-velocity first connecting section 310, reduces airflow resistance and fan load, thereby effectively reducing energy consumption.

[0041] Specifically, such as Figures 1 to 5 As shown, in this embodiment, the ventilation device consists of a ventilation channel 300 and an exhaust assembly 400. The ventilation channel 300 is an irregular hollow structure used to collect the hot air generated by the inverter 200 and guide the hot air to flow along a specified trajectory. The exhaust assembly 400 is used to exhaust the hot air in the ventilation channel 300 to the energy storage cabinet 100.

[0042] In this embodiment, the ventilation channel 300 includes a first connecting section 310 and a second connecting section 320 that are interconnected. The ventilation cross-sectional area of ​​the first connecting section 310 is larger than that of the second connecting section 320. The first connecting section 310 is rectangular, with one end connected to the air outlet 110 and the other end connected to the second connecting section 320. The second connecting section 320 is rectangular with a chamfer on one side, with an air intake 321 opposite to the inverter 200 at one end and the other end connected to the first connecting section 310. This design causes the ventilation area to gradually decrease from the first connecting section 310 to the second connecting section 320. Because the ventilation area of ​​the second connecting section 320 is smaller, the airflow velocity in this section is higher when the exhaust assembly 400 is running, which can achieve efficient extraction of hot air. When the airflow enters the first connecting section 310 from the second connecting section 320, the increased ventilation area leads to a decrease in flow velocity, reducing the frictional resistance between the airflow and the inner wall of the ventilation channel 300, thereby reducing the energy consumption of the exhaust assembly 400.

[0043] like Figure 1 As shown, in this embodiment, the ventilation cross-sectional area refers to the vertical cross-sectional area of ​​the first connecting section 310 and the second connecting section 320 along the direction parallel to the air outlet 110.

[0044] In this embodiment, the first connecting section 310 has a rectangular receiving groove 311 that is recessed from the outside in. The depth of the receiving groove 311 is adapted to the size of the exhaust assembly 400. At least one exhaust port 312, which communicates with the exhaust port 110 and the second connecting section 320 respectively, is provided on the inner wall of the receiving groove 311 parallel to the air outlet 110. The exhaust assembly 400 is detachably disposed within the receiving groove 311 and faces the exhaust port 312. This design allows the exhaust assembly 400 to be easily removed from the receiving groove 311 for cleaning, maintenance, or replacement without requiring large-scale disassembly of the entire ventilation device, greatly reducing maintenance time and costs. Furthermore, it allows the exhaust assembly 400 to be tightly integrated inside the first connecting section 310, thus making full use of space and making the entire ventilation device more compact, particularly suitable for use in energy storage cabinets 100 with limited space.

[0045] In this embodiment, the exhaust vent 312 can be arranged singly or in multiples. When multiple exhaust vents 312 are arranged, they can be arranged horizontally, vertically, in a ring, or in a matrix. This design further improves heat dissipation efficiency.

[0046] Preferably, in this embodiment, the exhaust vents 312 are circular, four in number, and arranged in a matrix. An obstruction is provided between adjacent exhaust vents 312, and the exhaust assembly 400 includes four fans 410 corresponding one-to-one with each exhaust vent 312. This design not only increases the exhaust capacity and airflow coverage, ensuring efficient heat dissipation, but also, through the redundant design of the four fans 410, allows 70% of the heat dissipation capacity to be maintained even if a single fan 410 fails. Furthermore, the obstruction design improves the strength of the inner wall of the receiving groove 311, enabling it to stably support the weight of the fans 410 and ensuring the stability of the ventilation device during operation.

[0047] In this embodiment, the first connecting section 310 is also provided with a fixing hole on the side near the air outlet 110. The fixing hole includes a first fixing hole 314 provided at the top of the first connecting section 310 and a second fixing hole 315 provided at the bottom of the first connecting section 310. The first fixing hole 314 and the second fixing hole 315 are respectively detachably connected to the first filter structure 700 by fasteners.

[0048] In this embodiment, the second connecting section 320 is located directly above the inverter 200 and abuts against the outer wall of the inverter 200. The bottom of the second connecting section 320 has a rectangular air intake 321 that is opposite to and communicates with the heat dissipation holes 210 of the inverter 200. This design ensures that all hot air emitted from inside the inverter 200 can be quickly captured and discharged through the ventilation channel 300, significantly improving heat dissipation efficiency. Furthermore, it reduces the possibility of external cold air directly entering the ventilation channel 300 without heat exchange, thus improving the efficiency of hot air extraction.

[0049] In this embodiment, a buffer structure 500 is provided between the bottom of the second connection section 320 and the top of the inverter 200. One side of the buffer structure 500 abuts against the outer wall of the top of the inverter 200, and the other side abuts against the outer wall of the bottom of the second connection section 320. This design can effectively absorb the mechanical vibration generated during the operation of the inverter 200 and prevent the vibration from being transmitted to the second connection section 320. This design not only reduces noise but also reduces the risk of component loosening or external surface damage caused by vibration, thus improving the overall stability of the system.

[0050] Preferably, in this embodiment, the buffer structure 500 is a rubber pad, and two pads are provided: one rectangular, adapted to the size of the air intake 321, and the other strip-shaped, adapted to the length of the second connecting section 320. This combination of rectangular and strip-shaped rubber pads ensures both localized sealing at the air intake 321 and overall tight contact between the second connecting section 320 and the inverter 200, evenly distributing contact pressure. This dual-protection design further enhances the system's sealing and stability.

[0051] In this embodiment, the bottom of the second connecting section 320 is also provided with a plurality of strip reinforcing ribs 322, and the plurality of reinforcing ribs 322 are in the same horizontal plane as the air intake 321. The design of the plurality of strip reinforcing ribs 322 significantly enhances the structural strength of the second connecting section 320, enabling it to withstand greater negative pressure and external pressure, and avoiding loss of sealing and reduction of heat dissipation efficiency due to structural deformation.

[0052] In this embodiment, a guide vane 323 is provided on the side of the second connecting section 320 away from the first connecting section 310. This guide vane 323 is inclined towards the first connecting section 310 and forms an acute angle with the horizontal plane. This design effectively guides hot air towards the exhaust port 312, ensuring more uniform airflow into the first connecting section 310, avoiding uneven airflow distribution, and improving overall heat dissipation efficiency. Furthermore, it shortens the airflow path, reducing resistance and energy loss along the airflow path.

[0053] In this embodiment, the first connecting section 310 and the second connecting section 320 can be directly connected, or they can be connected through a transition section. Preferably, the first connecting section 310 and the second connecting section 320 are connected through a third connecting section 330, which serves as a transition section. This design allows airflow to smoothly enter the first connecting section 310 from the second connecting section 320.

[0054] In this embodiment, a third connecting section 330 is provided between the first connecting section 310 and the second connecting section 320. The third connecting section 330 is trapezoidal, with its top flush with the tops of the first connecting section 310 and the second connecting section 320, and its bottom arranged at an angle. This design can effectively guide the airflow to smoothly transition from the second connecting section 320 to the first connecting section 310, avoiding turbulence or uneven distribution of airflow at the junction, ensuring that the airflow passes more evenly through the entire ventilation channel 300, and improving the overall heat dissipation efficiency.

[0055] In this embodiment, the exhaust assembly 400 includes four fans 410 disposed within the receiving slots 311 of the first connecting section 310, and each fan 410 is detachably connected to the inner wall of the receiving slots 311 by fasteners. It is used to draw hot air generated by the inverter 200 into the ventilation channel 300 through the air intake 321, and exhaust it to the outside of the energy storage cabinet 100 through the air outlet 110. This design significantly increases the total exhaust capacity, enabling more effective extraction of hot air generated by the inverter 200, ensuring that more heat can be dissipated in a short time, and improving overall heat dissipation efficiency.

[0056] like Figures 1 to 6 As shown, this utility model embodiment also provides an energy storage system, including:

[0057] The energy storage cabinet 100 is equipped with an air outlet 110 and an air inlet 120.

[0058] Inverter 200, which is located inside energy storage cabinet 100;

[0059] A ventilation device, comprising a ventilation duct 300 and an exhaust assembly 400;

[0060] The ventilation duct 300 has a hollow structure and includes a first connecting section 310 and a second connecting section 320 that are interconnected. The first connecting section 310 is connected to the air outlet 110, and the second connecting section 320 is located on the inverter 200 and has an air intake 321 opposite to the inverter 200. The ventilation cross-sectional area of ​​the first connecting section 310 is larger than that of the second connecting section 320.

[0061] The exhaust assembly 400, located on the first connecting section 310, draws hot air generated by the inverter 200 through the intake port 321 into the ventilation channel 300 and exhausts it to the outside of the energy storage cabinet 100 through the exhaust port 110. This design, through the coordinated design of the ventilation device with the exhaust port 110, intake port 120, and inverter 200, creates an efficient directional heat dissipation cycle within the energy storage cabinet 100. This design ensures that hot air is efficiently extracted and exhausted through the exhaust port 110, while cool air enters the energy storage cabinet 100 through the intake port 120, forming a continuous airflow and significantly improving overall heat dissipation efficiency.

[0062] It should be noted that this ventilation device has the same structure as the ventilation device mentioned above, therefore, the specific structure of the ventilation device will not be described again.

[0063] In this embodiment, both the air inlet 120 and the air outlet 110 are rectangular. The air inlet 120 is equipped with a first louver assembly 600 communicating with the outside, and the air outlet 110 is equipped with a second louver assembly 610 communicating with the outside. A first filter structure 700 and a second filter structure 710 are detachably installed inside the energy storage cabinet 100. The first filter structure 700 is located between the second louver assembly 610 and the first connecting section 310, and the second filter structure 710 is located on the side of the first louver assembly 600 facing inwards from the energy storage cabinet 100. The first connecting section 310 is detachably connected to the first filter structure 700. Through the cooperative design of the first louver assembly 600 and the second louver assembly 610, not only can rainwater, dust, and other external pollutants be effectively blocked from entering the energy storage cabinet 100, but the ventilation volume can also be adjusted to ensure smooth airflow inside the cabinet. The design of the first filter structure 700 and the second filter structure 710 purifies the incoming and outgoing air, preventing dust, moisture, and other contaminants from entering the inverter 200 and other critical equipment, protecting them from contamination and corrosion. Furthermore, the first filter structure 700 and the second filter structure 710 are detachable, allowing users to remove them from inside the energy storage cabinet 100 for cleaning, maintenance, or replacement without disassembling the first louver assembly 600 and the second louver assembly 610. This significantly reduces maintenance time and costs, improving the system's maintainability.

Claims

1. A ventilation device for an energy storage system, installed on an energy storage cabinet (100) for dissipating heat from an inverter (200), wherein the energy storage cabinet (100) is provided with an air outlet (110), characterized in that, The ventilation device includes: A ventilation duct (300) is a hollow structure, comprising a first connecting section (310) and a second connecting section (320) that are interconnected. The first connecting section (310) is connected to the air outlet (110), and the second connecting section (320) has an air intake (321) opposite to the inverter (200). The ventilation cross-sectional area of ​​the first connecting section (310) is larger than that of the second connecting section (320). The exhaust assembly (400) is located on the first connecting section (310) and is used to draw the hot air generated by the inverter (200) into the ventilation channel (300) through the air intake (321) and discharge it to the outside of the energy storage cabinet (100) through the air outlet (110).

2. A ventilation device for an energy storage system according to claim 1, characterized in that, A third connecting segment (330) is provided between the first connecting segment (310) and the second connecting segment (320). The top of the third connecting segment (330) is flush with the top of the first connecting segment (310) and the second connecting segment (320). The bottom of the third connecting segment (330) is arranged at an angle, with one end flush with the bottom of the first connecting segment (310) and the other end flush with the bottom of the second connecting segment (320).

3. A ventilation device for an energy storage system according to claim 1, characterized in that, The first connecting section (310) has a receiving groove (311), and the inner wall of the receiving groove (311) is provided with at least one exhaust port (312) that communicates with the air outlet (110) and the second connecting section (320) respectively. The exhaust assembly (400) is detachably disposed in the receiving groove (311) and opposite to the exhaust port (312).

4. A ventilation device for an energy storage system according to claim 3, characterized in that, The exhaust vents (312) are provided in four and arranged in a matrix, and there is a gap (313) between two adjacent exhaust vents (312). The exhaust assembly (400) includes four fans (410) that correspond one-to-one with the exhaust vents (312).

5. A ventilation device for an energy storage system according to claim 1, characterized in that, The second connection section (320) is located above the inverter (200) and abuts against the outer wall of the inverter (200), and the air intake (321) is opposite to and connected to the heat dissipation hole (210) of the inverter (200).

6. A ventilation device for an energy storage system according to claim 5, characterized in that, A buffer structure (500) is provided between the second connecting section (320) and the inverter (200). One side of the buffer structure (500) abuts against the outer wall of the inverter (200), and the other side abuts against the outer wall of the second connecting section (320).

7. A ventilation device for an energy storage system according to claim 5, characterized in that, The second connecting section (320) is also provided with a plurality of reinforcing ribs (322), and the plurality of reinforcing ribs (322) are in the same horizontal plane as the air intake (321).

8. A ventilation device for an energy storage system according to claim 5, characterized in that, The second connecting section (320) is also provided with an air guide (323) on the side away from the first connecting section (310). The air guide (323) is inclined toward the first connecting section (310) and forms an acute angle with the horizontal plane.

9. An energy storage system, characterized in that, include: An energy storage cabinet (100) is provided with an air outlet (110) and an air inlet (120); An inverter (200) is disposed inside the energy storage cabinet (100); A ventilation device, the ventilation device including a ventilation duct (300) and an exhaust assembly (400); The ventilation duct (300) is a hollow structure, including a first connecting section (310) and a second connecting section (320) that are interconnected. The first connecting section (310) is connected to the air outlet (110), and the second connecting section (320) is located on the inverter (200) and has an air intake (321) opposite to the inverter (200). The ventilation cross-sectional area of ​​the first connecting section (310) is larger than that of the second connecting section (320). The exhaust assembly (400) is located on the first connecting section (310) and is used to draw the hot air generated by the inverter (200) into the ventilation channel (300) through the air intake (321) and discharge it to the outside of the energy storage cabinet (100) through the air outlet (110).

10. An energy storage system according to claim 9, characterized in that, The air inlet (120) is provided with a first louver assembly (600) communicating with the outside, and the air outlet (110) is provided with a second louver assembly (610) communicating with the outside. The energy storage cabinet (100) is detachably provided with a first filter structure (700) and a second filter structure (710). The first filter structure (700) is located between the second louver assembly (610) and the first connecting section (310). The second filter structure (710) is located on the side of the first louver assembly (600) facing the inside of the energy storage cabinet (100). The first connecting section (310) is detachably connected to the first filter structure (700).

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