Energy storage cabinet fireproof device and energy storage cabinet

Abstract

The utility model belongs to the technical field of energy storage systems, and discloses an energy storage cabinet fireproof device and an energy storage cabinet. The energy storage cabinet fireproof device comprises a fireproof box, the fireproof box comprises a box body, a partition plate and an extrusion plate, the partition plate and the extrusion plate are located in the box body and form a storage cavity for storing carbon dioxide with the box body, the extrusion plate is located above the partition plate and can move towards the partition plate, the partition plate is provided with vent holes, and the side wall of part of the box body below the partition plate is provided with air outlet holes communicated with a cabinet body; the fireproof device further comprises a limiting mechanism, the limiting mechanism comprises a heat conduction cylinder, a limiting piece, a first spring and a hot melting piece, the heat conduction cylinder penetrates through the side wall of the cabinet body, the limiting piece penetrates through the side wall of the box body and is slidably connected into the heat conduction cylinder, the limiting piece is limited below the extrusion plate, and the first spring is located in the heat conduction cylinder and connected with the limiting piece and the inner wall of the heat conduction cylinder. The hot melting piece is located in the heat conduction barrel and fixes the first spring in a stretching state. When a fire occurs in the cabinet body, the fireproof device can quickly respond to restrain fire expansion, and time is won for fire-fighting operation.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage systems, and in particular to a fire protection device for an energy storage cabinet and an energy storage cabinet. Background Art

[0002] Energy storage cabinets have been widely used due to their good volume utilization. Energy storage cabinets are generally loaded with batteries and used in all aspects of power generation, transmission, distribution and use. They can effectively improve the ability to optimize the allocation of power resources and meet the society's needs for continuous, stable and controllable electric energy. Energy storage cabinets are widely used. They not only play an important role in peak shaving and valley filling and improving power quality on the power generation side, transmission and distribution side and load side of large power grids, but also are increasingly widely used in distributed energy of microgrids on the user side. Grid energy storage is increasingly becoming an important part of my country's energy consumption, and the energy storage market demand is huge.

[0003] The energy storage cabinet contains a large number of lithium-ion batteries. During the charging and discharging process, the batteries will generate a lot of heat. The heat generated by the batteries accumulates with the increase of charging and discharging time. When the temperature inside the energy storage cabinet is too high, sparks or even open flames are likely to occur. For energy storage cabinets, due to their high energy density and compact structure, once a fire occurs, it is very difficult to control the fire through the fire fighting system in the initial stage of the fire. Even if the fire can be extinguished in time later, it will seriously affect the use of the energy storage cabinet and cause great economic losses.

[0004] Therefore, there is an urgent need for an energy storage cabinet fire protection device and an energy storage cabinet to solve the above problems. Utility Model Content

[0005] One purpose of the utility model is to provide a fire protection device for an energy storage cabinet, which can quickly respond to the initial stage of a fire in the energy storage cabinet, effectively control the source of the fire, and delay the development of the fire.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Provided is a fire protection device for an energy storage cabinet, comprising:

[0008] A fireproof box, the fireproof box comprising a box body, a partition and an extrusion plate, the partition and the extrusion plate are connected in the box body, the extrusion plate is located above the partition, the extrusion plate can move toward the partition, the partition, the extrusion plate and the side wall of the box body form a storage cavity capable of storing carbon dioxide, the partition is provided with a vent hole, and the part of the box body side wall located below the partition is provided with an air outlet hole, and the air outlet hole is used to connect to the cabinet body;

[0009] A limiting mechanism, the limiting mechanism includes a heat-conducting tube, a limiting member, a first spring and a hot melt member, the heat-conducting tube is penetrated through the side wall of the cabinet, an opening is arranged at one end of the heat-conducting tube facing the box body, the limiting member is penetrated through the opening and the side wall of the box body and is slidably connected in the heat-conducting tube, the limiting member is limited below the extrusion plate, the first spring is located in the heat-conducting tube and is connected to the limiting member and the inner wall of the heat-conducting tube, and the hot melt member is located in the heat-conducting tube to fix the first spring in a stretched state.

[0010] As an optional solution for the fire protection device of the energy storage cabinet, a plurality of ventilation holes are provided, and the plurality of ventilation holes are evenly arranged on the partition.

[0011] As an optional solution for the fire protection device of the energy storage cabinet, the partition includes a sealing plate, which is sealed in the vent hole and can move along the ventilation direction of the vent hole.

[0012] As an optional solution for the fire protection device of the energy storage cabinet, the partition also includes a ventilation mechanism, which includes a connecting plate and a ventilation rod, the connecting plate is connected to the inner wall of the vent hole and is located below the sealing plate, the ventilation rod is connected to the connecting plate and penetrates the sealing plate, and the ventilation rod is provided with a ventilation groove extending along the moving direction of the sealing plate.

[0013] As an optional solution of the fire protection device of the energy storage cabinet, the ventilation mechanism further includes a second spring, and the second spring abuts between the sealing plate and the connecting plate.

[0014] As an optional solution for the fire protection device of the energy storage cabinet, the fire protection box also includes a fan, which is arranged in the box body and below the partition, and the fan is arranged toward the air outlet.

[0015] As an optional solution for the fire protection device of the energy storage cabinet, the box body is also provided with an air inlet hole, and the air inlet hole is arranged on the side wall of the box body opposite to the air outlet hole.

[0016] As an optional solution for the fire protection device of the energy storage cabinet, the extrusion plate includes an extrusion part and a stop part, the extrusion part is arranged in parallel above the partition, the stop part is connected to the bottom of the extrusion part and fits to the inner wall of the box body provided with the air inlet hole, and the stop part can move between the partition and the box body.

[0017] As an optional solution for the fire protection device of the energy storage cabinet, the fire protection box also includes an extrusion mechanism, which is arranged above the extrusion plate. The extrusion mechanism includes a third spring, and the third spring is compressed between the top of the box body and the extrusion plate.

[0018] Another object of the present invention is to provide an energy storage cabinet that can quickly respond to a fire inside the energy storage cabinet, suppress the expansion of the fire, and delay the development of the fire.

[0019] To achieve this purpose, the utility model adopts the following technical solutions:

[0020] Provided is an energy storage cabinet, comprising a cabinet body and the above-mentioned energy storage cabinet fire protection device, wherein the cabinet body is provided with ventilation holes, and the ventilation holes are connected to the air outlet holes.

[0021] Beneficial effects of the utility model:

[0022] The utility model provides a fireproof device for an energy storage cabinet, comprising a fireproof box, the fireproof box comprising a box body, a partition and an extrusion plate, the partition and the extrusion plate are connected in the box body, the extrusion plate is located above the partition, the extrusion plate can move toward the partition, the partition, the extrusion plate and the inner wall of the box body form a storage cavity capable of storing carbon dioxide, the partition is provided with an air vent, a part of the side wall of the box body located below the partition is provided with an air outlet, and the air outlet is used to connect the cabinet body; the fireproof device for the energy storage cabinet also includes a limiting mechanism, the limiting mechanism includes a heat-conducting tube, a limiting piece, a first spring and a hot melt piece, the heat-conducting tube is penetrated through the side wall of the cabinet body, an opening is provided at one end of the heat-conducting tube facing the box body, the limiting piece is penetrated through the opening and the side wall of the box body and is slidably connected in the heat-conducting tube, the limiting piece is limited below the extrusion plate, the first spring is located in the heat-conducting tube and is connected to the limiting piece and the inner wall of the heat-conducting tube, and the hot melt piece is located in the heat-conducting tube to fix the first spring in a stretched state. When a fire occurs in the cabinet and the temperature rises, since the heat-conducting tube is installed in the cabinet, it can quickly absorb heat and transfer the heat to the hot melt component, causing the hot melt component to melt and release the first spring. The limiter slides into the heat-conducting tube under the pulling force of the first spring, so that the limiting effect of the limiter on the extrusion plate becomes invalid. The extrusion plate is squeezed toward the direction close to the partition, and the carbon dioxide in the storage cavity is squeezed out from the vent. The carbon dioxide enters the cabinet through the air outlet, diluting the oxygen concentration in the cabinet, suppressing the further expansion of the fire in the cabinet, and achieving the effect of delaying the fire, thereby buying time for subsequent firefighting operations.

[0023] The utility model also provides an energy storage cabinet, including a cabinet body and the above-mentioned energy storage cabinet fire protection device, the energy storage cabinet fire protection device is located on the side of the cabinet body, the cabinet body is provided with ventilation holes, the ventilation holes can be connected to the air outlet holes, the energy storage cabinet fire protection device can quickly respond to the fire in the early stage of the fire inside the cabinet body, and introduce carbon dioxide into the cabinet body through the ventilation holes to suppress the expansion of the fire, delay the fire, buy time for subsequent firefighting operations, and improve the safety of the energy storage cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the internal structure of the energy storage cabinet fire protection device provided by the utility model;

[0025] Figure 2 yes Figure 1 The structural diagram at A in the middle;

[0026] Figure 3 It is a schematic diagram of the structure of the limiting mechanism of the fire protection device of the energy storage cabinet provided by the utility model;

[0027] Figure 4 It is a schematic diagram of the energy storage cabinet provided by the utility model.

[0028] In the figure:

[0029] 1. Box body; 11. Storage cavity; 12. Air outlet; 13. Air inlet; 14. Extrusion cavity; 15. Installation cavity;

[0030] 2. partition plate; 21. vent hole; 22. sealing plate; 23. ventilation mechanism; 231. connecting plate; 232. ventilation rod; 2321. ventilation groove; 233. second spring;

[0031] 3. Extrusion plate; 31. Extrusion portion; 32. Stopper portion;

[0032] 4. Limiting mechanism; 41. Heat-conducting tube; 42. Limiting member; 421. Thrust member; 422. Limiting member; 43. First spring; 44. Hot melt member; 45. Heat-conducting rod; 46. Heat-conducting sheet;

[0033] 5. Fan;

[0034] 6. Extrusion mechanism; 61. Third spring; 62. Fixing plate; 63. Positioning rod;

[0035] 100. Fireproof box; 200. Cabinet; 210. Ventilation hole. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] like Figures 1 to 3 As shown, the fireproof device of the energy storage cabinet of this embodiment includes a fireproof box 100, which includes a box body 1, a partition 2 and an extrusion plate 3. The partition 2 and the extrusion plate 3 are connected to the box body 1, and the extrusion plate 3 is located above the partition 2. The extrusion plate 3 can move toward the partition 2. The partition 2, the extrusion plate 3 and the side wall of the box body 1 form a storage cavity 11 capable of storing carbon dioxide, and the partition 2 is provided with a vent 21. The side wall of the box body 1 located below the partition 2 is provided with an air outlet 12, and the air outlet 12 is used to connect to the cabinet body 200. The fire protection device of the energy storage cabinet also includes a limiting mechanism 4, which includes a heat-conducting tube 41, a limiting member 42, a first spring 43 and a hot melt member 44. The heat-conducting tube 41 is penetrated through the side wall of the cabinet 200, and an opening is arranged at one end of the heat-conducting tube 41 facing the box body 1. The limiting member 42 is penetrated through the opening and the side wall of the box body 1 and is slidably connected in the heat-conducting tube 41. The limiting member 42 is limited below the extrusion plate 3. The first spring 43 is located in the heat-conducting tube 41 and is connected to the limiting member 42 and the inner wall of the heat-conducting tube 41. The hot melt member 44 is located in the heat-conducting tube 41 to fix the first spring 43 in a stretched state.

[0041] In the fire protection device for the energy storage cabinet provided in the present embodiment, the heat-conducting tube 41 is penetrated through the cabinet 200. When a fire occurs in the cabinet 200 and causes the temperature to rise, the heat-conducting tube 41 can absorb the heat in the first time and transfer the heat to the hot melt component 44, so that the hot melt component 44 melts, releases the fixing effect on the first spring 43, and causes the first spring 43 in a stretched state to shrink. The limiting component 42 slides into the heat-conducting tube 41 under the pulling force of the first spring 43, so that the limiting component 42 withdraws from the box 1, and the limiting effect of the extrusion plate 3 fails, so that the extrusion plate 3 can move toward the direction close to the partition 2. The space of the storage chamber 11 decreases with the movement of the extrusion plate 3, and the carbon dioxide in the storage chamber 11 is squeezed out from the vent 21, and the carbon dioxide enters the cabinet 200 through the air outlet 12, thereby diluting the oxygen concentration in the cabinet 200, inhibiting the fire in the cabinet 200 from further expanding, achieving the effect of delaying the fire, and buying time for subsequent firefighting operations.

[0042] Reference Figure 1 The extrusion plate 3 and the partition plate 2 divide the internal space of the box body 1 into three parts, which are the extrusion chamber 14, the storage chamber 11 and the installation chamber 15 from top to bottom. The fireproof box 100 also includes an extrusion mechanism 6, which is arranged in the extrusion chamber 14 above the extrusion plate 3. The extrusion mechanism 6 includes a third spring 61, a fixing plate 62 and a positioning rod 63. The third spring 61 is compressed between the top of the box body 1 and the extrusion plate 3. The fixing plate 62 is connected to the top and side wall of the box body 1, and the third spring 61 is compressed between the fixing plate 62 and the extrusion plate 3. The positioning rod 63 is connected below the fixing plate 62, passes through the third spring 61 and can abut against the extrusion plate 3 to prevent the third spring 61 from tilting when compressed. When the stopper 42 moves into the heat-conducting tube 41, the stopper 42 is no longer limited below the extrusion plate 3, and the extrusion plate 3 can move downward quickly under the action of the third spring 61, and the third spring 61 can continue to provide pressure for a certain period of time, thereby increasing the pressure of the extrusion plate 3 on the carbon dioxide in the storage chamber 11, accelerating the speed of carbon dioxide passing through the vent 21, and then accelerating the speed of carbon dioxide entering the cabinet 200, thereby achieving a rapid response of the fire protection device of the energy storage cabinet. In this embodiment, the fixed plate 62 includes a top plate and a side plate, the top plate is connected to the top of the box body 1, and the side plate is attached to the side wall of the box body 1, so that the structure of the extrusion mechanism 6 is more stable.

[0043] Furthermore, a plurality of ventilation holes 21 can be provided on the partition 2 , and the plurality of ventilation holes 21 are evenly arranged on the partition 2 , so as to facilitate rapid circulation of carbon dioxide in the storage chamber 11 .

[0044] like Figure 2As shown, the partition plate 2 includes a sealing plate 22 and a ventilation mechanism 23 . The sealing plate 22 is sealed and connected to the ventilation hole 21 and can move along the ventilation direction of the ventilation hole 21 . The ventilation mechanism 23 includes a connecting plate 231 and a ventilation rod 232. The connecting plate 231 is connected to the inner wall of the vent hole 21 and is located below the sealing plate 22. The ventilation rod 232 is connected to the connecting plate 231 and penetrates the sealing plate 22. The ventilation rod 232 is provided with a ventilation groove 2321 extending along the moving direction of the sealing plate 22. When the extrusion plate 3 does not move downward, the sealing plate 22 is located at the top of the ventilation rod 232. The ventilation groove 2321 is isolated from the storage cavity 11 by the sealing plate 22, and carbon dioxide cannot pass through the vent hole 21. As the extrusion plate 3 moves downward, the air pressure in the storage cavity 11 gradually increases, and the carbon dioxide can squeeze the sealing plate 22 to move downward, so that the ventilation groove 2321 is connected to the storage cavity 11 and the through hole 21 below the sealing plate 22. At this time, the carbon dioxide can flow to the bottom of the partition 2 through the ventilation groove 2321. Such an arrangement can ensure that the carbon dioxide in the storage chamber 11 will not leak when there is no fire, thereby ensuring the effectiveness of the fire protection device; it can also achieve automatic release of carbon dioxide when a fire occurs, thereby achieving a rapid response in the early stage of a fire.

[0045] Furthermore, the ventilation mechanism 23 also includes a second spring 233. The second spring 233 abuts between the sealing plate 22 and the connecting plate 231 and is sleeved outside the ventilation rod 232, so that the sealing plate 22 can be kept on the top of the ventilation rod 232 when there is no fire, further preventing carbon dioxide leakage, and also enabling the sealing plate 22 to be reset.

[0046] Continue to refer to Figure 1 The fireproof box 100 further includes a fan 5, which is disposed in the box body 1 and below the partition 2, and is disposed toward the air outlet 12. In this embodiment, the fan 5 is disposed in the installation cavity 15. When there is no fire, the fan 5 can blow air into the cabinet body 200 through the air outlet 12 to achieve ventilation of the cabinet body 200 under normal working conditions; when there is a fire, the carbon dioxide in the storage cavity 11 flows from the vent 21 to the installation cavity 15, and the fan 5 can blow the carbon dioxide into the cabinet body 200 through the air outlet 12, thereby increasing the flow speed of the carbon dioxide, reducing the time it takes for the carbon dioxide to reach the ignition point, and further achieving a rapid response in the initial stage of the fire.

[0047] Preferably, the box body 1 is also provided with an air inlet 13, which is arranged on the side wall of the box body 1 opposite to the air outlet 12. When there is no fire, air can flow into the box body 1 from the air inlet 13 and flow out from the air outlet 12 into the cabinet body 200, so as to realize the circulation between the side of the cabinet body 200 connected to the fireproof box 100 and the outside air, enhance the gas exchange efficiency inside the cabinet body 200, and further enhance the heat dissipation effect, and reduce the fire caused by heat accumulation. In this embodiment, the air outlet 12 is arranged as a plurality of first strip holes extending in the horizontal direction, and the air inlet 13 is arranged as a plurality of second strip holes extending in the vertical direction. The air outlet 12 and the air inlet 13 are arranged on two opposite side walls of the box body 1, and the fan 5 is installed between the air outlet 12 and the air inlet 13, so as to facilitate the air circulation in the cabinet body 200.

[0048] In order to prevent the fan 5 from blowing outside air into the cabinet 200 from the air inlet 13 after a fire occurs, the extrusion plate 3 includes an extrusion portion 31 and a stopper 32. The extrusion portion 31 is arranged parallel to the partition 2 and is used to squeeze the carbon dioxide in the storage cavity 11. The stopper 32 is connected to the bottom of the extrusion portion 31 and fits the inner wall of the box 1 provided with the air inlet 13. The stopper 32 can move between the partition 2 and the inner wall of the box 1. When the extrusion plate 3 moves downward, the extrusion portion 31 is used to squeeze the carbon dioxide in the storage cavity 11, and the stopper 32 moves downward between the partition 2 and the inner wall of the box 1 and fits the side wall of the box 1 where the air inlet 13 is formed, so that the air inlet 13 is no longer connected to the inside of the box 1, preventing air from entering the box 1 through the air inlet 13, thereby preventing air from entering the cabinet 200 and expanding the fire.

[0049] Reference Figure 3 The limiting mechanism 4 also includes a heat-conducting rod 45, which is arranged in the heat-conducting tube 41 and connected to one end of the heat-conducting tube 41 close to the cabinet 200. The limiting member 42 is sleeved on the heat-conducting rod 45, and the heat-conducting rod 45 is inserted into the first spring 43 and the hot melt member 44, which can not only guide the first spring 43, but also quickly transfer the heat of the heat-conducting tube 41 from the inside to the hot melt member 44, accelerate the melting speed of the hot melt member 44, and improve the reaction speed of the limiting mechanism 4 to the fire. In this embodiment, the hot melt member 44 is a polyethylene wax material. In some other embodiments, the hot melt member 44 can also be made of polypropylene, polyurethane and other materials.

[0050] Furthermore, the limiting member 42 includes a thrust portion 421 and a limiting portion 422. The cross-section of the thrust portion 421 is larger than the cross-section of the limiting portion 422. The thrust portion 421 is slidably connected in the heat-conducting tube 41 and is connected to the first spring 43. The limiting portion 422 can extend out of the heat-conducting tube 41 and be limited below the extrusion plate 3. Such a setting can limit the limiting member 42 in the heat-conducting tube 41 to prevent the limiting member 42 from falling from the heat-conducting tube 41.

[0051] Furthermore, the limiting mechanism 4 also includes a heat conducting plate 46, which is connected to one end of the heat conducting tube 41 toward the cabinet 200, shortening the distance between the limiting mechanism 4 and the fire point in the cabinet 200, enabling a quick response to the fire, while improving the heat transfer efficiency of the limiting mechanism 4, and further improving the response speed of the limiting mechanism 4.

[0052] Preferably, the energy storage cabinet fire prevention device may be provided with a plurality of limit mechanisms 4, which can improve the limit strength of the extrusion plate 3, and also reduce the abnormal activation of the fire prevention device due to abnormal failure of the hot melt 44. In this embodiment, the energy storage cabinet fire prevention device is provided with two limit mechanisms 4, and in some other embodiments, three, four, etc., may also be provided.

[0053] The utility model also provides an energy storage cabinet, including a cabinet body 200 and the above-mentioned energy storage cabinet fire protection device, wherein the fire protection box 100 is arranged on the side of the cabinet body 200, and a ventilation hole 210 is arranged on the side wall of the cabinet body 200 facing the energy storage cabinet fire protection device, and the ventilation hole 210 is connected to the air outlet 12.

[0054] In the energy storage cabinet provided by the utility model, when a fire occurs inside the cabinet 200, the temperature inside the cabinet 200 rises, and the temperature of the heat-conducting tube 41 rises accordingly, transferring heat to the hot melt 44. The hot melt 44 melts after absorbing heat, so that the fixing effect of the hot melt 44 on the first spring 43 is eliminated, and the first spring 43 returns to its original state from the stretched state, driving the limiter 42 to slide into the heat-conducting tube 41. The limiter 42 cannot be limited below the extrusion plate 3, so that the extrusion plate 3 can move downward, squeezing the carbon dioxide stored in the storage cavity 11. The carbon dioxide passes through the partition 2 through the vent 21, and then enters the cabinet 200 through the air outlet 12 and the ventilation hole 210. The oxygen in the cabinet 200 is diluted by the carbon dioxide, and the expansion of the fire in the cabinet 200 is suppressed. The energy storage cabinet provided by the utility model can respond quickly at the early stage of the fire in the cabinet 200, effectively delay the development of the fire, avoid the spread of the fire, buy time for subsequent firefighting operations, and improve the safety of the energy storage cabinet.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A fire protection device for an energy storage cabinet, characterized in that: include: A fireproof box (100), the fireproof box (100) comprising a box body (1), a partition (2) and an extrusion plate (3), the partition (2) and the extrusion plate (3) being connected inside the box body (1), the extrusion plate (3) being located above the partition (2), the extrusion plate (3) being able to move toward the partition (2), the partition (2), the extrusion plate (3) and the side wall of the box body (1) forming a storage cavity (11) capable of storing carbon dioxide, the partition (2) being provided with an air vent (21), and a portion of the side wall of the box body (1) located below the partition (2) being provided with an air outlet hole (12), the air outlet hole (12) being used to connect to a cabinet body (200); A limiting mechanism (4), the limiting mechanism (4) comprising a heat-conducting tube (41), a limiting member (42), a first spring (43) and a hot melt member (44), the heat-conducting tube (41) being inserted through the side wall of the cabinet (200), the heat-conducting tube (41) being provided with an opening at one end facing the box (1), the limiting member (42) being inserted through the opening and the side wall of the box (1) and being slidably connected in the heat-conducting tube (41), the limiting member (42) being limited below the extrusion plate (3), the first spring (43) being located in the heat-conducting tube (41) and being connected to the limiting member (42) and the inner wall of the heat-conducting tube (41), the hot melt member (44) being located in the heat-conducting tube (41) and fixing the first spring (43) in a stretched state.

2. The energy storage cabinet fire protection device according to claim 1, characterized in that: A plurality of the ventilation holes (21) are provided, and the plurality of ventilation holes (21) are evenly arranged on the partition plate (2).

3. The energy storage cabinet fire protection device according to claim 1, characterized in that: The partition plate (2) comprises a sealing plate (22), wherein the sealing plate (22) is sealed in the vent hole (21) and is movable along the vent direction of the vent hole (21).

4. The energy storage cabinet fire protection device according to claim 3, characterized in that: The partition (2) also includes a ventilation mechanism (23), the ventilation mechanism (23) includes a connecting plate (231) and a ventilation rod (232), the connecting plate (231) is connected to the inner wall of the ventilation hole (21) and is located below the sealing plate (22), the ventilation rod (232) is connected to the connecting plate (231) and penetrates the sealing plate (22), and the ventilation rod (232) is provided with a ventilation groove (2321) extending along the moving direction of the sealing plate (22).

5. The energy storage cabinet fire protection device according to claim 4, characterized in that: The ventilation mechanism (23) further comprises a second spring (233), wherein the second spring (233) abuts between the sealing plate (22) and the connecting plate (231).

6. The energy storage cabinet fire protection device according to claim 1, characterized in that: The fireproof box (100) further comprises a fan (5), wherein the fan (5) is arranged inside the box body (1) and below the partition (2), and the fan (5) is arranged toward the air outlet (12).

7. The energy storage cabinet fire protection device according to claim 1, characterized in that: The box body (1) is also provided with an air inlet hole (13), and the air inlet hole (13) is arranged on the side wall of the box body (1) opposite to the air outlet hole (12).

8. The energy storage cabinet fire protection device according to claim 7, characterized in that: The extrusion plate (3) comprises an extrusion portion (31) and a stop portion (32); the extrusion portion (31) is arranged parallel to the top of the partition (2); the stop portion (32) is connected to the bottom of the extrusion portion (31) and is attached to the inner wall of the box body (1) provided with the air inlet hole (13); and the stop portion (32) is capable of moving between the partition (2) and the box body (1).

9. The energy storage cabinet fire protection device according to claim 1, characterized in that: The fireproof box (100) further comprises a squeezing mechanism (6), wherein the squeezing mechanism (6) is arranged above the squeezing plate (3), and the squeezing mechanism (6) comprises a third spring (61), wherein the third spring (61) is compressed between the top of the box body (1) and the squeezing plate (3).

10. An energy storage cabinet, comprising a cabinet body (200), characterized in that: It also comprises the energy storage cabinet fire protection device according to any one of claims 1 to 9, wherein the cabinet body (200) is provided with a ventilation hole (210), and the ventilation hole (210) is connected to the air outlet hole (12).

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