Ventilation device of energy storage system and energy storage container

Abstract

The utility model relates to a ventilation device of an energy storage system and an energy storage container. The ventilation device comprises a ventilation pipeline, ventilation blades, a driving part and a sealing part. The ventilation pipeline is used for being installed at an air inlet and an air outlet of the energy storage box, and an airflow channel for air circulation is formed in the ventilation pipeline. And the ventilation blades are rotatably mounted in the ventilation pipeline. The driving part is in transmission connection with the ventilation blades and used for driving the ventilation blades to rotate to open or close the airflow channel. The sealing component is arranged in the ventilation pipeline and used for sealing a gap between the ventilation blade and the ventilation pipeline when the airflow channel is closed. The air exchange device drives the air exchange blades to rotate in the air exchange pipeline through the driving piece so as to control air flow, the structure is simple and reliable, and the air flow is effectively adjusted. The sealing part can be accurately matched with the ventilation blade to achieve a good sealing effect, external wind and rainwater are prevented from entering the energy storage box, and the sealing performance of the space in the energy storage box is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage equipment, and in particular to a ventilation device of an energy storage system and an energy storage container. Background Art

[0002] As environmental issues become increasingly prominent, countries around the world have proposed to develop clean energy, such as vigorously developing hydropower, wind power, and solar power generation. Energy storage power stations are another type of equipment that the country has advocated in recent years to effectively store and utilize energy. They play a very important role in supplementing power to the power grid and adjusting the peak and valley of the power grid. At the same time, energy storage power stations can also effectively store electricity generated by solar energy, wind energy, etc., and provide uninterrupted power supply for power outages and areas with power shortages.

[0003] The energy storage power station is composed of modular battery containers and converter containers. The container body is mostly prefabricated standard shipping containers. Existing energy storage containers will generate heat when working. Excessive heat accumulation will cause the temperature inside the container to rise. Excessive temperature environment will affect the working performance and service life of batteries and electrical equipment used for energy conversion. Utility Model Content

[0004] One purpose of the utility model is to solve the deficiencies in the prior art and provide a ventilation device for an energy storage system that can control air flow and achieve temperature regulation in the box. To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A ventilation device for an energy storage system, the energy storage system comprising an energy storage box, the ventilation device comprising:

[0006] A ventilation duct is used to be installed at the air inlet and outlet of the energy storage box, and an air flow channel for air circulation is formed in the ventilation duct;

[0007] A ventilation blade is rotatably installed in the ventilation duct;

[0008] A driving member, which is drivingly connected to the ventilation blades, and is used to drive the ventilation blades to rotate to open or close the airflow channel; and

[0009] The sealing component is arranged in the ventilation duct and is used for sealing the gap between the ventilation blade and the ventilation duct when the air flow channel is closed.

[0010] In one embodiment, the air flow direction in the air flow channel is along the axial direction of the ventilation duct, and when the air flow channel is opened, the ventilation blades are parallel to the axial direction of the ventilation duct;

[0011] When the air flow channel is closed, the ventilation blades are perpendicular to the axial direction of the ventilation duct.

[0012] In one embodiment, a rotating shaft is rotatably provided on the ventilation duct, the ventilation blades are detachably mounted on the rotating shaft, the driving member is connected to the rotating shaft and can drive the rotating shaft to rotate, and the rotation of the rotating shaft causes the ventilation blades to open or close the airflow channel.

[0013] In one embodiment, the rotating shaft crosses the ventilation duct, and the axis of the rotating shaft passes through the center of the cross section of the ventilation duct;

[0014] The rotating shaft is connected to the middle part of the ventilation blades, and the parts of the ventilation blades located on both sides of the rotating shaft are arranged axially symmetrically with respect to the rotating shaft.

[0015] In one embodiment, two opposite axial holes are opened on the side wall of the ventilation duct, and the two axial holes are used to pass the rotating shaft;

[0016] Buffer sleeves are arranged in the two shaft holes, and the two ends of the rotating shaft are respectively passed through the buffer sleeves of the two shaft holes.

[0017] In one of the embodiments, the ventilation device further comprises an angle measuring device, which is fixedly mounted on the outside of the ventilation duct, and the angle measuring device is used to measure the rotation angle of the rotating shaft when the air flow channel is opened and closed.

[0018] In one embodiment, the sealing component includes a first sealing pad and a second sealing pad, and the first sealing pad and the second sealing pad are respectively fixed to inner walls of opposite sides of the ventilation duct;

[0019] The first sealing pad and the second sealing pad are respectively located on two sides of the rotating shaft to fit with two side edges of the ventilation blades respectively.

[0020] In one embodiment, the first sealing plate and the second sealing plate are staggered in the axial direction of the ventilation duct. When the air flow channel is closed, the first sealing plate fits against the upper surface of one side of the ventilation blade, and the second sealing plate fits against the lower surface of the opposite side of the ventilation blade.

[0021] In one embodiment, the sealing component also includes a first fixing plate and a second fixing plate, which are respectively fixed on the inner walls on opposite sides of the ventilation duct, the first sealing pad is fixed on the first fixing plate, and the second sealing pad is fixed on the second fixing plate.

[0022] Another object of the utility model is to provide an energy storage container, comprising a container body and a ventilation device of the energy storage system described in any one of the above items, wherein the energy storage box is arranged inside the container body, and the ventilation duct is detachably connected to the energy storage box.

[0023] It can be seen from the above technical solution that the utility model has at least the following advantages and positive effects:

[0024] In the utility model, the ventilation device drives the ventilation blades to rotate in the ventilation duct through the driving member to control the air flow. The structure is simple and reliable, and the effective control of the air flow is achieved, and the efficient adjustment of the temperature environment in the energy storage box is achieved.

[0025] By setting up the sealing component, the sealing component can precisely cooperate with the ventilation blades to achieve a good sealing effect, effectively blocking external wind and rain from entering the energy storage box, ensuring the closedness of the space inside the energy storage box, avoiding energy loss, and thus improving the charging efficiency of the rechargeable battery pack in the energy storage box under cold conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of an energy storage container according to an embodiment.

[0027] Figure 2 yes Figure 1 A schematic diagram of the structure of the ventilation device of the energy storage system of the energy storage container.

[0028] Figure 3 yes Figure 2 The structure diagram of the ventilation device shown is shown in another perspective.

[0029] Figure 4 yes Figure 2 A schematic side view of the ventilation device shown.

[0030] Figure 5 yes Figure 2 Schematic diagram of the state of the ventilation blades in the ventilation device shown in FIG. 1 when they are fully opened.

[0031] Figure 6 yes Figure 4 AA cross-sectional view of the structure shown, wherein the ventilation blades are fully opened.

[0032] Figure 7 yes Figure 2 Schematic diagram of the state when the ventilation blades in the ventilation device are fully closed.

[0033] Figure 8 yes Figure 4 AA cross-sectional view of the structure shown, wherein the ventilation blades are completely closed.

[0034] Fig. 9 yes Figure 4 Schematic diagram of the BB cross section of the structure shown.

[0035] The following are the descriptions of the reference numerals:

[0036] 10-Container body; 20-Energy storage box; 30-Ventilation device;

[0037] 100-ventilation duct;

[0038] 110-buffer sleeve; 120-mounting flange;

[0039] 200-ventilation blades;

[0040] 300-driving member;

[0041] 400- Sealing parts;

[0042] 410-first sealing plate; 420-second sealing plate;

[0043] 430-first fixing plate; 440-second fixing plate;

[0044] 500-rotating shaft;

[0045] 600 - Angle measuring device. DETAILED DESCRIPTION

[0046] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0047] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indications of directions or positional relationships (such as up, down, left, right, front and back, etc.) are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions also change accordingly.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] See also Figure 1 As shown, an embodiment of the utility model provides an energy storage container 10 and a ventilation device 30 for an energy storage system. The energy storage container 10 includes a container body, and an energy storage box 20 is arranged inside the container body. The container body is generally a box-type frame structure, and the energy storage box 20 is arranged in its frame structure. The energy storage box 20 is used to place rechargeable batteries and electrical equipment for energy conversion.

[0050] The ventilation device 30 is installed on the energy storage box 20 to achieve the circulation of air inside and outside the energy storage box 20 and to adjust the temperature inside the energy storage box 20.

[0051] The specific embodiment of the ventilation device 30 of the energy storage system of the present application is described in detail below in conjunction with the accompanying drawings.

[0052] See also Figure 2 and Figure 3 As shown, a ventilation device 30 of an energy storage system according to an embodiment of the present utility model includes a ventilation duct 100 , ventilation blades 200 , a driving member 300 and a sealing member 400 .

[0053] The ventilation duct 100 is used to be installed at the air inlet and outlet of the energy storage box 20, and an air flow channel for air circulation is formed in the ventilation duct 100. The ventilation blade 200 is rotatably installed in the ventilation duct 100. The driving member 300 is transmission-connected with the ventilation blade 200, and the driving member 300 is used to drive the ventilation blade 200 to rotate to open or close the air flow channel. The sealing component 400 is arranged in the ventilation duct 100, and the sealing component 400 is used to seal the gap between the ventilation blade 200 and the ventilation duct 100 when the air flow channel is closed.

[0054] like Figure 2 As shown, the ventilation duct 100 is roughly cylindrical, and its interior is hollow to form an air flow channel for air to pass through in a straight line. It can be understood that in other implementations, the ventilation duct 100 can also be a square cylinder or a polygonal cylinder, etc.

[0055] In one embodiment, the ventilation duct 100 is detachably mounted at the air inlet and outlet of the energy storage box 20. Specifically, a mounting flange 120 is fixedly disposed at the end of the ventilation duct 100, and a mounting hole is provided on the mounting flange 120. The ventilation duct 100 can be detachably fixedly connected to the energy storage box 20 by passing fasteners such as bolts through the mounting holes.

[0056] In one embodiment, the air flow direction in the air flow channel is along the axial direction of the ventilation duct 100. Therefore, the air can flow in a straight line along the ventilation duct 100, which is beneficial to improve the ventilation efficiency of the ventilation device 30.

[0057] See also Figures 4 to 6 When the air flow channel is opened, the ventilation blades 200 are parallel to the axial direction of the ventilation duct 100. At this time, the ventilation blades 200 can be parallel to the flow direction of the air to reduce the resistance of the air flow.

[0058] See also Figure 7 and Figure 8 When the air flow channel is closed, the ventilation blades 200 are perpendicular to the axial direction of the ventilation duct 100. At this time, the ventilation blades 200 can be perpendicular to the flow direction of the air, thereby effectively blocking the air circulation.

[0059] In the embodiment of the present application, the angle through which the ventilation blade 200 opens and closes the airflow channel can be 90°. However, the present application is not limited thereto. In other embodiments, the angle through which the ventilation blade 200 opens and closes the airflow channel can be other angles, as long as the airflow channel can be opened and closed by the rotation of the ventilation blade 200.

[0060] See also Figure 3 As shown, in one embodiment, a rotating shaft 500 is rotatably provided on the ventilation duct 100, and the ventilation blades 200 are detachably mounted on the rotating shaft 500. Figure 3 As shown, the ventilation blade 200 and the rotating shaft 500 can be detachably connected in the following manner: a connecting hole is provided on the ventilation blade 200, and a threaded hole is provided on the rotating shaft 500 corresponding to the connecting hole. A fastener such as a screw is passed through the connecting hole and the screw is tightened and fixed to the threaded hole.

[0061] The driving member 300 is connected to the rotating shaft 500 and can drive the rotating shaft 500 to rotate. The rotating shaft 500 rotates to open or close the airflow channel by the ventilation blade 200. In this embodiment, the driving member 300 drives the rotating shaft 500 to rotate, thereby driving the ventilation blade 200 to rotate in the ventilation duct 100 to open or close the airflow channel.

[0062] It can be understood that the driving member 300 can drive the rotating shaft 500 to rotate as needed, so that the ventilation blade 200 is in an intermediate position between fully open and fully closed. At this time, the air flow channel is roughly in a half-open state, which can allow less air circulation, so that the ventilation device 30 of the present application can effectively adjust the air flow as needed.

[0063] In this embodiment, the driving member 300 may be a driving motor. One end of the rotating shaft 500 may be connected to the output shaft of the driving motor. Specifically, the output shaft of the driving motor and the end of the rotating shaft 500 may be relatively fixedly connected by a coupling and a fastening screw to ensure the stability and precise rotation angle of the rotating shaft 500.

[0064] In the embodiment of the present application, the driving member 300 may be a driving motor, but the present application is not limited thereto, and in other embodiments, the driving member 300 may also be a rotary cylinder or the like.

[0065] See also Figure 2As shown, in one embodiment, two opposite axial holes are provided on the side wall of the ventilation duct 100, and the two axial holes are used to pass the rotating shaft 500. The two axial holes are coaxially arranged on the opposite side walls of the ventilation duct 100. The central axis of the axial hole can pass through the center of the cross section of the ventilation duct 100. When the rotating shaft 500 is passed through the two axial holes, the rotating shaft 500 can be located in the middle position of the cross section of the ventilation duct 100.

[0066] like Figure 5 As shown, the rotating shaft 500 crosses the ventilation duct 100, and the axis of the rotating shaft 500 passes through the center of the cross section of the ventilation duct 100. The rotating shaft 500 is connected to the middle of the ventilation blade 200, and the parts of the ventilation blade 200 located on both sides of the rotating shaft 500 are arranged axially symmetrically about the rotating shaft 500. When the driving member 300 drives the rotating shaft 500 to rotate to drive the ventilation blade 200 to open or close the air flow channel, the rotating shaft 500 can stably drive the ventilation blade 200 to rotate, thereby realizing effective regulation and control of the air exchange inside and outside the box.

[0067] See also Figure 2 As shown, each shaft hole is provided with a buffer sleeve 110, and the two ends of the rotating shaft 500 are respectively inserted into the buffer sleeves 110 of the two shaft holes. Among them, the buffer sleeve 110 can be made of nylon. By setting the buffer sleeve 110, the ventilation duct 100 and the rotating shaft 500 can be limited and fixed, ensuring the relative position between the ventilation duct 100 and the rotating shaft 500 is stable. At the same time, the buffer sleeve 110 can play a certain buffering role, reducing the wear that may be caused by the direct contact between the rotating shaft 500 and the ventilation duct 100.

[0068] See also Fig. 9 As shown, in one embodiment, the ventilation device 30 further includes an angle measuring device 600, which is fixedly mounted on the outside of the ventilation duct 100. The angle measuring device 600 is used to measure the rotation angle of the rotating shaft 500 when the airflow channel is opened and closed. By setting the angle measuring device 600, the rotation angle of the rotating shaft 500 can be measured to ensure that the rotating shaft 500 rotates accurately by 90°, so that the ventilation blade 200 can fully open the airflow channel or close the airflow channel.

[0069] See also Figure 2 As shown, the sealing component 400 is disposed in the ventilation duct 100 and is used to seal the gap between the ventilation blade 200 and the ventilation duct 100 when the air flow channel is closed.

[0070] In one embodiment, if Figure 3 As shown, the sealing component 400 includes a first sealing pad 410 and a second sealing pad 420 , and the first sealing pad 410 and the second sealing pad 420 are respectively fixed to the inner walls of the ventilation duct 100 on two opposite sides.

[0071] Specifically, the first sealing pad 410 and the second sealing pad 420 are respectively located on both sides of the rotating shaft 500 to respectively fit with the edges of both sides of the ventilation blade 200. The first sealing pad 410 and the second sealing pad 420 can be made of high-density waterproof and windproof sealing materials, such as EPDM (Ethylene Propylene Diene Monomer) foam.

[0072] like Figure 5 As shown, in the radial direction of the ventilation duct 100, the first sealing pad 410 and the second sealing pad 420 can roughly enclose an annular sealing ring. The inner ring area of ​​the sealing ring is smaller than the area of ​​the ventilation blade 200, so that the ventilation blade 200 can contact the sealing ring to achieve sealing when the air flow channel is closed.

[0073] like Figure 8 As shown, the first sealing plate 410 and the second sealing plate 420 are staggered in the axial direction of the ventilation duct 100. When the airflow channel is closed, the first sealing plate 410 fits the upper surface of one side of the ventilation blade 200, and the second sealing plate 420 fits the lower surface of the opposite side of the ventilation blade 200.

[0074] In this embodiment, the first sealing pad 410 and the second sealing pad 420 can ensure the sealing effect between the ventilation blade 200 and the ventilation duct 100, significantly reduce the air volume loss, and optimize the temperature control in the box.

[0075] See also Figure 8 In one embodiment, the sealing component 400 further includes a first fixing plate 430 and a second fixing plate 440, which are respectively fixed on the inner walls of the ventilation duct 100 on opposite sides. The first sealing pad 410 is fixed on the first fixing plate 430, and the second sealing pad 420 is fixed on the second fixing plate 440.

[0076] Among them, the first fixing plate 430 can be welded on the inner wall of the ventilation duct 100, which mainly plays the role of supporting the first sealing pad 410 and limiting the rotation range of the ventilation blade 200. The second fixing plate 440 can be welded on the inner wall of the ventilation duct 100, which mainly plays the role of supporting the second sealing pad 420 and limiting the rotation range of the ventilation blade 200. By setting the first fixing plate 430 and the second fixing plate 440, the reliable connection between the first sealing pad 410 and the second sealing pad 420 and the ventilation duct 100 can be ensured. At the same time, the position of the ventilation blade 200 in the position of closing the air flow channel can be accurately positioned to ensure sealing.

[0077] It is understood that in other embodiments, the sealing component 400 may also be fixedly connected to the circumferential edge of the ventilation blade 200. When the ventilation blade 200 is in a position to close the air flow channel, the sealing component 400 around the ventilation blade 200 can contact and fit with the inner wall of the ventilation duct 100 to achieve a sealing effect.

[0078] When the ventilation device 30 of the present application is working, after the device is powered on, the driving member 300 drives the ventilation blade 200 to rotate 90° around the rotating shaft 500, so that the ventilation blade 200 moves from a position that opens the airflow channel to a position that closes the airflow channel.

[0079] When the ventilation blades 200 close the air flow channel, the ventilation blades 200 can effectively block external wind and rain, preventing wind and rain from entering the energy storage box 20. At the same time, the closedness of the space in the energy storage box 20 is ensured to avoid energy loss, thereby improving the charging efficiency of the rechargeable battery pack in the energy storage box 20 under cold conditions.

[0080] After the device is powered off, the driving member 300 automatically resets and drives the blades back to the position of opening the airflow channel. At this time, the airflow channel allows external air to flow into the energy storage box 20, thereby achieving the purpose of ventilation, preventing the temperature in the energy storage box 20 from being too high, and at the same time, exhausting gases such as smoke and hydrogen from the energy storage box 20.

[0081] In the present application, the ventilation duct 100, ventilation blades 200, shaft 500, etc. in the ventilation device 30 are made of materials with excellent weather resistance, UV resistance and temperature change resistance. In particular, the waterproofness of the materials must be ensured to ensure the stability and durability of the ventilation device 30 under different environmental conditions.

[0082] In the present application, the main components of the ventilation device 30, such as the ventilation duct 100, the ventilation blades 200, the driving member 300, the rotating shaft 500, etc. are designed as independent modules, and each component can be quickly assembled and fixed or disassembled and replaced, which is convenient for upgrading and maintenance of the device.

[0083] The ventilation device 30 of the present application drives the ventilation blades 200 to rotate in the ventilation duct 100 through the driving member 300 to control the air flow. The structure is simple and reliable, and effective control of the air flow is achieved, thereby achieving efficient regulation of the temperature environment in the energy storage box 20.

[0084] Specifically, when the ventilation blades 200 are in a position to open the air flow channel, the ventilation device 30 can achieve the purpose of ventilation to prevent the temperature in the energy storage box 20 from being too high, and at the same time, it can discharge gases such as smoke and hydrogen out of the energy storage box 20.

[0085] When the ventilation blades 200 are in the position of closing the air flow channel, the ventilation blades 200 can effectively block external wind and rain, and prevent wind and rain from entering the energy storage box 20. At the same time, the closedness of the space in the energy storage box 20 is ensured to avoid energy loss, thereby improving the charging efficiency of the rechargeable battery pack in the energy storage box 20 under cold conditions.

[0086] The ventilation device 30 of the present application can achieve a good sealing effect, significantly reduce air volume loss, and optimize the temperature control in the box by setting a sealing component 400 that is precisely matched with the ventilation blades 200.

[0087] The ventilation device 30 of the present application realizes effective regulation and control of air circulation inside and outside the energy storage box 20, while also taking into account the needs of safety and energy efficiency. The ventilation device 30 has a simple structure, is easy to operate, and is easy to upgrade and replace components, providing users with a practical and efficient solution.

[0088] The ventilation device 30 of the present application has high air tightness and can improve energy efficiency. The ventilation device 30 adopts a modular design, which is convenient for installation and maintenance of various components, and easy to replace the ventilation blades 200 and the sealing component 400, which greatly saves costs and improves the sustainability and adaptability of the product.

[0089] The above embodiments are merely exemplary descriptions of the structures. The structures in the embodiments are not fixed combination structures. In the absence of structural conflicts, the structures in multiple embodiments can be used in any combination.

[0090] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A ventilation device for an energy storage system, the energy storage system comprising an energy storage box, characterized in that: The ventilation device comprises: A ventilation duct, which is used to be installed at the air inlet and outlet of the energy storage box, and an air flow channel for air circulation is formed in the ventilation duct; A ventilation blade rotatably mounted in the ventilation duct; a driving member, which is drivingly connected to the ventilation blade, and is used to drive the ventilation blade to rotate so as to open or close the airflow channel; and A sealing component is arranged in the ventilation duct, and is used to seal the gap between the ventilation blade and the ventilation duct when the air flow channel is closed.

2. The ventilation device of the energy storage system according to claim 1, characterized in that: The air flow direction in the air flow channel is along the axial direction of the ventilation duct. When the air flow channel is opened, the ventilation blades are parallel to the axial direction of the ventilation duct. When the air flow channel is closed, the ventilation blades are perpendicular to the axial direction of the ventilation duct.

3. The ventilation device of the energy storage system according to claim 2, characterized in that: A rotating shaft is rotatably provided on the ventilation duct, the ventilation blades are detachably mounted on the rotating shaft, the driving member is connected to the rotating shaft and can drive the rotating shaft to rotate, and the rotation of the rotating shaft causes the ventilation blades to open or close the airflow channel.

4. The ventilation device of the energy storage system according to claim 3, characterized in that: The rotating shaft crosses the ventilation duct, and the axis of the rotating shaft passes through the center of the cross section of the ventilation duct; The rotating shaft is connected to the middle part of the ventilation blades, and the parts of the ventilation blades located on both sides of the rotating shaft are arranged axially symmetrically with respect to the rotating shaft.

5. The ventilation device of the energy storage system according to claim 3, characterized in that: Two opposite axial holes are formed on the side wall of the ventilation duct, and the two axial holes are used to pass the rotating shaft; Buffer sleeves are arranged in the two shaft holes, and the two ends of the rotating shaft are respectively passed through the buffer sleeves of the two shaft holes.

6. The ventilation device of the energy storage system according to claim 3, characterized in that: It also includes an angle measuring device, which is fixedly installed on the outside of the ventilation duct, and the angle measuring device is used to measure the rotation angle of the rotating shaft when the air flow channel is opened and closed.

7. The ventilation device of the energy storage system according to claim 3, characterized in that: The sealing component comprises a first sealing pad and a second sealing pad, wherein the first sealing pad and the second sealing pad are respectively fixed to inner walls of two opposite sides of the ventilation duct; The first sealing pad and the second sealing pad are respectively located on two sides of the rotating shaft to fit with two side edges of the ventilation blade respectively.

8. The ventilation device of the energy storage system according to claim 7, characterized in that: The first sealing plate and the second sealing plate are staggered in the axial direction of the ventilation duct. When the airflow channel is closed, the first sealing plate fits against the upper surface of one side of the ventilation blade, and the second sealing plate fits against the lower surface of the opposite side of the ventilation blade.

9. The ventilation device of the energy storage system according to claim 7, characterized in that: The sealing component also includes a first fixing plate and a second fixing plate, wherein the first fixing plate and the second fixing plate are respectively fixed on the inner walls of the ventilation duct on opposite sides, the first sealing pad is fixed on the first fixing plate, and the second sealing pad is fixed on the second fixing plate.

10. An energy storage container, characterized in that: The invention comprises a container body and a ventilation device of an energy storage system according to any one of claims 1 to 9, wherein the energy storage box is arranged inside the container body, and the ventilation duct is detachably connected to the energy storage box.

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