Exhaust valve for energy storage tank

Abstract

The application relates to the technical field of exhaust valves, and provides an exhaust valve for an energy storage cabinet, which comprises a base provided with an exhaust through hole in communication with the internal space of the energy storage cabinet; a valve part comprising a first valve and a second valve, the first valve being arranged in the exhaust through hole and provided with an air inlet through hole, and the second valve being arranged in the air inlet through hole; and an auxiliary fan arranged on the second valve and used for guiding external air into the internal space of the energy storage cabinet; wherein the first valve is used for opening the exhaust through hole when the air pressure in the internal space of the energy storage cabinet is greater than a preset pressure; and the second valve is used for opening the air inlet through hole when the temperature in the internal space of the energy storage cabinet is higher than a preset temperature. The exhaust valve for the energy storage cabinet provided by the application can solve the technical problem that the internal temperature of the energy storage cabinet cannot be adjusted.

Description

Technical Field

[0001] This application relates to the field of exhaust valve technology, and in particular to an exhaust valve for an energy storage cabinet. Background Technology

[0002] Energy storage cabinets are devices used to store electrical energy and are widely used in new energy power generation, grid peak shaving, and industrial and commercial energy storage, with most located outdoors. Due to changes in the external environment, some changes will also occur inside the energy storage cabinet, and some of these changes can affect the normal use of the cabinet, especially changes in internal temperature and air pressure.

[0003] The exhaust valve is a crucial component for regulating the internal temperature and pressure of energy storage cabinets. However, existing exhaust valves for energy storage cabinets in related technologies only regulate air pressure. When the internal environment of the energy storage cabinet is characterized by low pressure and high temperature, the existing exhaust valves cannot effectively cool the cabinet. Summary of the Invention

[0004] This application provides an exhaust valve for an energy storage cabinet, which can improve the technical problem in related technologies that cannot regulate the internal temperature of the energy storage cabinet.

[0005] In a first aspect, embodiments of this application provide an exhaust valve for an energy storage cabinet, comprising:

[0006] The base has an exhaust vent that is connected to the internal space of the energy storage cabinet;

[0007] A valve section, comprising a first valve, a second valve, and a thermal expansion device, wherein the first valve is disposed within the exhaust port and has an intake port; the second valve is disposed within the intake port; the thermal expansion device is disposed between the second valve and the first valve; and the thermal expansion device is used to push the second valve to open or close the intake port.

[0008] An auxiliary fan is installed on the second valve and is used to introduce external gas into the internal space of the energy storage cabinet.

[0009] The first valve is used to open the exhaust port when the air pressure inside the energy storage cabinet is greater than a preset pressure; the thermal expansion device is used to open the air inlet port by pushing the second valve when the temperature inside the energy storage cabinet is higher than a preset temperature.

[0010] The technical solutions described in this application embodiment have at least the following technical effects:

[0011] The exhaust valve for the energy storage cabinet provided in this application embodiment, in the event of thermal runaway of the internal battery of the energy storage cabinet, causes the temperature and pressure inside the energy storage cabinet to simultaneously increase to exceed the preset temperature and preset pressure, thereby opening the exhaust port of the first valve and the intake port of the second valve. With the second valve open, an auxiliary fan introduces air from the outside space into the internal space of the energy storage cabinet to reduce the temperature inside the energy storage cabinet. With the first valve open, the auxiliary fan also accelerates the gas flow rate inside the energy storage cabinet, thereby accelerating the depressurization rate of the energy storage cabinet. When the temperature inside the energy storage cabinet is too high but the pressure remains constant, a thermal expansion device is used to open the intake port through the second valve, allowing the auxiliary fan to introduce outside air into the internal space of the energy storage cabinet, thereby reducing the temperature inside the energy storage cabinet. When the temperature is below the preset temperature and the internal pressure is less than the preset pressure, the second valve is closed. When the temperature is not yet below the preset temperature but the internal pressure is greater than the preset pressure, the first valve is opened to repeat the operation process of the exhaust valve for the energy storage cabinet in the event of thermal runaway of the internal battery of the energy storage cabinet. The exhaust valve for the energy storage cabinet in the above solution can solve the problem of excessively high temperature and pressure in the energy storage cabinet, either individually or simultaneously. In the prior art, the exhaust port and the air inlet port of the exhaust valve are a single hole. When dealing with impurities with low ignition points, the prior art requires a baffle mesh to be installed in the only hole. However, installing a baffle mesh will affect the discharge of hot air, which in turn will affect the cooling rate and the depressurization rate. By setting an air inlet port for air intake and an exhaust port for air exhaust, a baffle mesh only needs to be installed at the air inlet port. The above structure can reduce the impact on the cooling rate and will not affect the depressurization rate.

[0012] In some embodiments, the exhaust valve further includes a preset pressure regulating part, one end of which is connected to the base and the other end of which is connected to the first valve.

[0013] In some embodiments, the valve portion further includes a first connector connected to the first valve, and the base further has a mounting through hole, in which the first connector is movably disposed; the preset pressure regulating portion includes:

[0014] A preset pressure adjusting member is adjustablely disposed on the first connecting member, the preset pressure adjusting member being used to adjust the total length of the first connecting member and the preset pressure adjusting member; and

[0015] An elastic element, one end of which is connected to the base and the other end of which is connected to the preset pressure regulating component;

[0016] The preset pressure adjusting member is used to move toward the first connecting member to reduce the length of the elastic element, thereby increasing the preset force of the preset pressure adjusting part; the preset pressure adjusting member is also used to move away from the first connecting member to increase the length of the elastic element, thereby increasing the preset force of the preset pressure adjusting part.

[0017] In some embodiments, the valve portion further includes:

[0018] The second connecting member is connected to the second valve;

[0019] A cylinder body, disposed on the base, with its opening facing the second valve, and the second connecting member movably disposed within the cylinder body; and

[0020] A thermal expansion medium is disposed in the cylinder body, and the thermal expansion medium is used to push the second connecting member to move, thereby opening or closing the air intake port;

[0021] The thermal expansion medium is used to push the second connector toward the second valve to open the air inlet when the internal temperature of the energy storage cabinet is higher than the preset temperature; the thermal expansion medium is also used to push the second connector away from the second valve to close the air inlet when the internal temperature of the energy storage cabinet is lower than the preset temperature.

[0022] In some embodiments, the exhaust valve further includes an auxiliary switch element movably disposed on the side wall of the second valve, the auxiliary switch element being used to open or close the auxiliary fan.

[0023] In some embodiments, the exhaust valve further includes a blocking portion, one end of which is connected to the side wall of the air inlet; the blocking portion is used to prevent flammable materials from entering the internal space of the energy storage cabinet.

[0024] In some embodiments, the second valve has a cleaning port; the barrier includes:

[0025] A bracket is disposed on the side wall of the air intake orifice and extends into the cleaning orifice; and

[0026] A barrier element is provided on the bracket, and the barrier element is used to prevent flammable materials from entering the internal space of the storage cabinet.

[0027] In some embodiments, the vent valve further includes a cleaning brush disposed within the cleaning hole, with the brush head facing the barrier.

[0028] In some embodiments, the end of the auxiliary switch facing the intake port is configured as an inclined surface, and the inclined surface faces the cylinder block.

[0029] In some embodiments, the valve portion further includes at least two sealing elements, which are respectively disposed on the first valve and the second valve. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A three-dimensional structural schematic diagram of the exhaust valve for the energy storage cabinet provided in the embodiments of this application;

[0032] Figure 2 A bottom view of the exhaust valve for an energy storage cabinet provided in an embodiment of this application;

[0033] Figure 3 For along Figure 2 A schematic diagram of the cross-sectional structure along direction A in the diagram;

[0034] Figure 4 A front view of the exhaust valve for an energy storage cabinet provided in an embodiment of this application;

[0035] Figure 5 This is a three-dimensional structural diagram of the base used in the embodiments of this application.

[0036] The following are the labeling elements in the figure:

[0037] 100. Exhaust valve;

[0038] 10. Base; 101. Vent hole; 102. Mounting hole;

[0039] 20. Valve section; 21. First valve; 210. Air inlet port; 22. Second valve; 220. Cleaning port; 23. First connector; 20a. Thermal expansion device; 24. Second connector; 25. Cylinder body; 26. Thermal expansion medium; 27. Sealing element;

[0040] 30. Auxiliary fan;

[0041] 40. Preset pressure regulating section; 41. Preset pressure regulating component; 42. Elastic element;

[0042] 50. Auxiliary switching components;

[0043] 60. Barrier section; 61. Support; 62. Barrier component; 70. Cleaning brush. Detailed Implementation

[0044] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0046] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0047] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0048] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0049] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0050] It should be noted that in this application, the words "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of words such as "in some embodiments," "exemplarily," and "for example" is intended to present related concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of this application. The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0051] Energy storage cabinets are devices used to store electrical energy and are widely used in new energy power generation, grid peak shaving, and industrial and commercial energy storage, with most located outdoors. Due to changes in the external environment, some changes will also occur inside the energy storage cabinet, and some of these changes can affect the normal use of the cabinet, especially changes in internal temperature and air pressure.

[0052] The exhaust valve is a crucial component for regulating the internal temperature and pressure of energy storage cabinets. However, existing exhaust valves for energy storage cabinets in related technologies only regulate air pressure. When the internal environment of the energy storage cabinet is characterized by low pressure and high temperature, the existing exhaust valves cannot effectively cool the cabinet.

[0053] Based on this, in order to improve the technical problem of the inability to regulate the internal temperature of the energy storage cabinet in related technologies, the embodiments of this application provide the following solutions.

[0054] Please refer to the following: Figure 1 , Figure 3 and Figure 5 This application provides an exhaust valve 100 for an energy storage cabinet. The exhaust valve 100 includes a base 10, a valve section 20, and an auxiliary fan 30, wherein:

[0055] The base 10 has an exhaust vent 101, which is connected to the internal space of the energy storage cabinet.

[0056] The valve section 20 includes a first valve 21, a second valve 22, and a thermal expansion device 20a. The first valve 21 is disposed in the exhaust port 101 and has an air inlet port 210. The second valve 22 is disposed in the air inlet port 210. The thermal expansion device 20a is disposed between the second valve 22 and the first valve 21. The thermal expansion device 20a is used to push the second valve 22 to open or close the air inlet port 210.

[0057] The auxiliary fan 30 is installed on the second valve 22. The auxiliary fan 30 is used to introduce external gas into the internal space of the energy storage cabinet.

[0058] The first valve 21 is used to open the exhaust port 101 when the air pressure inside the energy storage cabinet is greater than the preset pressure; the thermal expansion device 20a is used to open the air inlet port 210 by pushing the second valve 22 when the temperature inside the energy storage cabinet is higher than the preset temperature.

[0059] It is understood that the base 10 is a component used to fix the exhaust valve 100 to the energy storage cabinet; for example, the base 10 can be a metal frame or a metal plate with through holes, etc. The first valve 21 is a component used to open or close the exhaust port 101; for example, the first valve 21 can be a movable valve or a rotary valve, etc. The second valve 22 is a component used to open or close the air inlet port 210; for example, the second valve 22 can be a movable valve or a rotary valve, etc. The auxiliary fan 30 is a device used to guide external space into the interior of the energy storage cabinet.

[0060] As can be seen from the above, the exhaust valve 100 for the energy storage cabinet provided in this application embodiment, in the event of thermal runaway of the battery inside the energy storage cabinet, causes the temperature and pressure inside the energy storage cabinet to simultaneously increase to exceed the preset temperature and preset pressure, thereby causing the first valve 21 to open the exhaust port 101 and the second valve 22 to open the air inlet port 210. When the second valve 22 is open, the auxiliary fan 30 introduces air from the outside space into the internal space of the energy storage cabinet to reduce the temperature of the internal space of the energy storage cabinet. When the first valve 21 is open, the auxiliary fan 30 can also accelerate the flow rate of gas in the internal space of the energy storage cabinet, thereby accelerating the energy storage cabinet. The pressure relief rate; when the temperature inside the energy storage cabinet is too high but the pressure remains constant, the thermal expansion device 20a is used to open the air inlet 210 through the second valve 22, so that the auxiliary fan 30 can introduce outside air into the energy storage cabinet, thereby reducing the temperature inside the energy storage cabinet. When the temperature is lower than the preset temperature and the internal pressure is lower than the preset pressure, the second valve 22 is closed; when the temperature is not lower than the preset temperature but the internal pressure is higher than the preset pressure, the first valve 21 is opened to repeat the working process of the energy storage cabinet exhaust valve 100 in the event of thermal runaway of the battery inside the energy storage cabinet. The energy storage cabinet exhaust valve 100 in the above solution can solve the problem of the energy storage cabinet temperature and pressure being too high individually or simultaneously. In the prior art, the exhaust port and the air inlet port of the exhaust valve 100 are a single hole. When dealing with impurities with low ignition points, the prior art requires a baffle to be installed in the only hole. However, installing a baffle will affect the discharge of hot air, which in turn will affect the cooling rate and the pressure relief rate. By setting an air inlet 210 for air intake only and an exhaust 101 for air exhaust only, a baffle only needs to be installed at the air inlet 210. The above structure can reduce the impact on the cooling rate and will not affect the pressure relief rate.

[0061] In some embodiments, please refer to the following: Figure 4 The exhaust valve 100 also includes a preset pressure regulating part 40, one end of which is connected to the base 10 and the other end is connected to the first valve 21.

[0062] It can be understood that the preset pressure adjustment unit 40 is a component used to adjust the preset pressure; for example, the preset pressure adjustment unit 40 includes a spring and a telescopic rod (preset pressure = spring preset force + force of spring extension length), one end of the spring is connected to one end of the telescopic rod, the other end is connected to the base 10, and the other end of the telescopic rod is connected to the first valve 21. By adjusting the length of the telescopic rod, the magnitude or direction of the preset force of the spring is adjusted, thereby changing the preset pressure.

[0063] With this configuration, by providing a preset pressure regulating part 40 on the exhaust valve 100, the preset pressure of the exhaust valve 100 can be changed, thereby enabling the exhaust valve 100 to adapt to energy storage cabinets of different specifications, thus reducing production costs.

[0064] Optionally, in some embodiments, please refer to Figures 1 to 5 The valve section 20 also includes a first connector 23 connected to the first valve 21. The base 10 also has a mounting through hole 102, in which the first connector 23 is movably disposed. The preset pressure regulating section 40 includes a preset pressure regulating member 41 and an elastic element 42, wherein:

[0065] The preset pressure adjustment component 41 is adjustablely disposed on the first connecting component 23. The preset pressure adjustment component 41 is used to adjust the total length of the first connecting component 23 and the preset pressure adjustment component 41.

[0066] One end of the elastic element 42 is connected to the base 10, and the other end is connected to the preset pressure regulating element 41.

[0067] The preset pressure adjusting member 41 is used to move toward the first connecting member 23 to reduce the length of the elastic element 42, thereby increasing the preset force of the preset pressure adjusting part 40; the preset pressure adjusting member 41 is also used to move away from the first connecting member 23 to increase the length of the elastic element 42, thereby increasing the preset force of the preset pressure adjusting part 40.

[0068] It can be understood that the first connecting member 23 is a component used to cooperate with the preset pressure adjusting member 41 to control the initial length of the elastic element 42; for example, the first connecting member 23 can be a rod or a block, etc. The preset pressure adjusting member 41 is a component used to cooperate with the first connecting member 23 to control the initial length of the elastic element 42; for example, the preset pressure adjusting member 41 can be a rod or a housing, etc. The elastic element 42 is a component used to adjust the preset force; for example, the elastic element 42 can be a linear elastic element such as a spring or a metal bellows.

[0069] This configuration allows for adjustment of the initial length of the elastic element 42, and thus the preset pressure, by adjusting the distance between the preset pressure regulating component 41 and the first connecting component 23. Compared to a solution combining a pressure sensor and a PLC, this solution has lower manufacturing costs and a lower probability of failure.

[0070] Optionally, please refer to Figures 1 to 5 The thermal expansion device 20a includes a second connector 24, a cylinder 25, and a thermal expansion medium 26, wherein:

[0071] The second connector 24 is connected to the second valve 22.

[0072] The cylinder body 25 is mounted on the base 10, and the opening of the cylinder body 25 faces the second valve 22, and the second connector 24 is movably mounted inside the cylinder body 25.

[0073] The thermal expansion medium 26 is disposed inside the cylinder 25. The thermal expansion medium 26 is used to push the second connecting member 24 to move, thereby opening or closing the air intake port 210.

[0074] The thermal expansion medium 26 is used to push the second connector 24 toward the second valve 22 to open the air inlet 210 when the internal temperature of the energy storage cabinet is higher than the preset temperature; the thermal expansion medium 26 is also used to push the second connector 24 away from the second valve 22 to close the air inlet 210 when the internal temperature of the energy storage cabinet is lower than the preset temperature.

[0075] It is understood that the second connector 24 is a component used to move the second valve 22; for example, the second connector 24 can be a rod or a block, etc. The cylinder 25 is a device for placing the thermal expansion medium 26. The thermal expansion medium 26 is a component used to push the second connector 24; for example, the thermal expansion medium 26 can be a liquid expansion medium (mercury or alcohol, etc.) or a gas expansion medium (hydrogen or helium, etc.), etc.

[0076] In this configuration, the thermal expansion medium 26 expands when the temperature inside the energy storage cabinet exceeds a preset temperature, thereby pushing the second valve 22 away from the base 10 via the second connector 24, opening the air inlet 210 and allowing the auxiliary fan 30 to draw gas from the outside into the energy storage cabinet's interior. Conversely, when the temperature inside the energy storage cabinet falls below the preset temperature, the thermal expansion medium 26 contracts, pulling the second valve 22 towards the base 10 via the second connector 24, thus closing the air inlet 210. Compared to a solution combining a temperature sensor and a PLC, this solution has lower manufacturing costs and a lower probability of failure.

[0077] For example, please refer to Figures 1 to 5 The exhaust valve 100 also includes an auxiliary switch 50, which is movably disposed on the side wall of the second valve 22. The auxiliary switch 50 is used to open or close the auxiliary fan 30.

[0078] It can be understood that the auxiliary switch 50 is a device used to associate the opening and closing of the auxiliary fan 30 with the position of the second valve 22; for example, the auxiliary switch 50 includes an elastic element and a block, the elastic element is disposed in the second valve 22, and the auxiliary switch 50 is connected to one end of the elastic element.

[0079] With this configuration, the auxiliary switch 50 is located on the side wall of the second valve 22, and the auxiliary switch 50 is located at the end of the second valve 22 facing away from the base 10. The above structure enables the second valve 22 to be completely retracted into the air inlet 210 when the temperature inside the energy storage cabinet is lower than the preset temperature, thereby avoiding the exhaust valve 100 from repeatedly opening and closing.

[0080] In some embodiments, please refer to Figures 1 to 5 The exhaust valve 100 also includes a blocking part 60, one end of which is connected to the side wall of the air inlet 210; the blocking part 60 is used to prevent flammable materials from entering the internal space of the energy storage cabinet.

[0081] It is understood that the barrier 60 is a component used to isolate the air intake 210 from the external space; for example, the barrier 60 may be an isolation mesh or an isolation membrane, etc.

[0082] With this configuration, while the air intake vent 210 introduces outside air into the internal space of the energy storage cabinet, it can also introduce flammable materials from the environment into the cabinet's interior. These flammable materials will ignite if the internal temperature exceeds their ignition point, potentially causing the energy storage cabinet to catch fire. The barrier 60 in the above solution prevents flammable materials from entering the internal space of the energy storage cabinet, thereby preventing the cabinet from burning.

[0083] Optionally, in some embodiments, please refer to Figures 1 to 5 The second valve 22 has a cleaning hole 220; the barrier part 60 includes a bracket 61 and a barrier element 62, wherein:

[0084] The bracket 61 is disposed on the side wall of the air intake hole 210 and extends into the cleaning hole 220.

[0085] The barrier 62 is mounted on the bracket 61 and is used to prevent flammable materials from entering the internal space of the storage cabinet.

[0086] It is understood that the bracket 61 is a component used to install the barrier 62. The barrier 62 is used to prevent flammable materials from entering the interior space of the storage cabinet; for example, the barrier 62 can be a barrier mesh or a barrier membrane, etc.

[0087] With this configuration, by setting a bracket 61 on the air intake vent 210 and placing the barrier 62 on the bracket 61, the barrier 62 can always be kept in an extended state, thereby preventing damage to the barrier 62 due to repeated extension and contraction.

[0088] Optionally, please refer to Figures 1 to 5 The exhaust valve 100 also includes a cleaning brush 70, which is disposed in the cleaning hole 220 and the brush head of the cleaning brush 70 faces the barrier 62.

[0089] It is understandable that the cleaning brush 70 is a device used to clean the barrier 62.

[0090] With this configuration, the cleaning brush 70 is used to clean the barrier 62, thereby preventing the barrier 62 from becoming clogged.

[0091] In some embodiments, please refer to Figures 1 to 4 The auxiliary switch 50 has an inclined surface at one end facing the intake port 210, and the inclined surface faces the cylinder block 25.

[0092] This configuration, by setting the auxiliary switch 50 as an inclined plane, prevents the auxiliary switch 50 from being stuck, thereby allowing the auxiliary switch 50 to open or close the auxiliary fan 30 when the second valve 22 is moved.

[0093] In some embodiments, please refer to Figures 1 to 5 The valve section 20 also includes at least two sealing elements 27, which are respectively disposed on the first valve 21 and the second valve 22.

[0094] It is understood that the sealing element 27 is a component used for sealing; for example, the sealing element 27 may be a stainless steel spiral wound gasket or a rubber gasket, etc.

[0095] With this configuration, by providing sealing elements 27 on the first valve 21 and the second valve 22, it is ensured that the first valve 21 isolates the exhaust port 101 from the external space and the second valve 22 isolates the intake port 210 from the external space, thus ensuring the normal use of the exhaust valve 100.

[0096] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An exhaust valve for an energy storage cabinet, characterized in that, include, The base has an exhaust vent that is connected to the internal space of the energy storage cabinet; A valve section, comprising a first valve, a second valve, and a thermal expansion device, wherein the first valve is disposed within the exhaust port and has an intake port; the second valve is disposed within the intake port; and the thermal expansion device is disposed between the second valve and the first valve, the thermal expansion device being used to push the second valve to open or close the intake port; and An auxiliary fan is installed on the second valve and is used to introduce external gas into the internal space of the energy storage cabinet. The first valve is used to open the exhaust port when the air pressure inside the energy storage cabinet is greater than a preset pressure; the thermal expansion device is used to open the air inlet port by pushing the second valve when the temperature inside the energy storage cabinet is higher than a preset temperature.

2. The exhaust valve for the energy storage cabinet as described in claim 1, characterized in that: The exhaust valve also includes a preset pressure regulating part, one end of which is connected to the base and the other end is connected to the first valve.

3. The exhaust valve for the energy storage cabinet as described in claim 2, characterized in that, The valve part further includes a first connector, which is connected to the first valve. The base also has a mounting through hole, and the first connector is movably disposed in the mounting through hole. The preset pressure regulating unit includes: A preset pressure adjusting member is adjustablely disposed on the first connecting member, the preset pressure adjusting member being used to adjust the total length of the first connecting member and the preset pressure adjusting member; and An elastic element, one end of which is connected to the base and the other end of which is connected to the preset pressure regulating component; The preset pressure adjusting member is used to move toward the first connecting member to reduce the length of the elastic element, thereby increasing the preset force of the preset pressure adjusting part; the preset pressure adjusting member is also used to move away from the first connecting member to increase the length of the elastic element, thereby increasing the preset force of the preset pressure adjusting part.

4. The exhaust valve for the energy storage cabinet as described in claim 3, characterized in that, The thermal expansion device further includes: The second connecting member is connected to the second valve; A cylinder body, disposed on the base, with its opening facing the second valve, and the second connecting member movably disposed within the cylinder body; and A thermal expansion medium is disposed in the cylinder body, and the thermal expansion medium is used to push the second connecting member to move, thereby opening or closing the air intake port; The thermal expansion medium is used to push the second connector toward the second valve to open the air inlet when the internal temperature of the energy storage cabinet is higher than the preset temperature; the thermal expansion medium is also used to push the second connector away from the second valve to close the air inlet when the internal temperature of the energy storage cabinet is lower than the preset temperature.

5. The exhaust valve for the energy storage cabinet as described in claim 4, characterized in that: The exhaust valve also includes an auxiliary switch, which is movably disposed on the side wall of the second valve and is used to open or close the auxiliary fan.

6. The exhaust valve for the energy storage cabinet as described in claim 1, characterized in that: The exhaust valve also includes a blocking part, one end of which is connected to the side wall of the air inlet; the blocking part is used to prevent flammable materials from entering the internal space of the energy storage cabinet.

7. The exhaust valve for an energy storage cabinet as described in claim 6, characterized in that, The second valve has a cleaning port; the barrier includes: A bracket is disposed on the side wall of the air intake orifice and extends into the cleaning orifice; and A barrier element is provided on the bracket, and the barrier element is used to prevent flammable materials from entering the internal space of the storage cabinet.

8. The exhaust valve for the energy storage cabinet as described in claim 7, characterized in that: The vent valve also includes a cleaning brush disposed within the cleaning hole, with the brush head facing the barrier.

9. The exhaust valve for an energy storage cabinet as described in claim 5, characterized in that: The auxiliary switch is configured with an inclined surface at one end facing the air intake hole, and the inclined surface faces the cylinder block.

10. The exhaust valve for an energy storage cabinet as described in claim 1, characterized in that: The valve section also includes at least two sealing elements, which are respectively disposed on the first valve and the second valve.

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