Self-fire-extinguishing outdoor energy storage battery cabinet and fire extinguishing method thereof

Abstract

The invention discloses a self-extinguishing outdoor energy storage battery cabinet and a fire extinguishing method thereof, and belongs to the technical field of energy storage equipment. Comprising a cabinet body, a cover plate is arranged at the upper end of the cabinet body, the cover plate is detachably connected to the cabinet body, the lower end of the cabinet body is fixed to a ground foundation, a plurality of lifting ropes are evenly distributed on the side face, facing the ground foundation, of the cover plate, one end of each lifting rope is fixed to the cover plate, and an energy storage module is arranged at the other end of each lifting rope. One end of each energy storage module is fixed to the other end of the lifting rope, a partition plate is arranged between every two adjacent energy storage modules, the side face of each partition plate is fixed to the inner side face of the cabinet body, the ground foundation is downwards provided with a water storage pit, overturning plates are symmetrically arranged at the lower end of the cabinet body, and the cabinet body and the water storage tank are separated through the overturning plates. And the projection of the water storage pit in the vertical direction completely covers the plurality of energy storage modules. According to the technical scheme, automatic fire extinguishing is carried out on the energy storage module used outdoors, fire spreading is avoided, and losses are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage devices, and particularly relates to a self-extinguishing outdoor energy storage battery cabinet and a fire extinguishing method therefor. Background Art

[0002] With the advancement of the global energy transformation, the demand for energy storage technologies, especially battery energy storage systems, is increasing continuously. Traditional energy storage batteries include a number of energy storage modules installed inside a cabinet. During the use of the energy storage modules, fires may occur occasionally for various reasons. For example, the diaphragm inside the energy storage module is damaged due to manufacturing defects, external impacts, aging, etc., resulting in a direct short circuit between the internal positive and negative electrodes, and a large amount of heat will be generated in a short time, triggering thermal runaway and then catching fire. Especially for outdoor energy storage battery cabinets, due to the lack of continuous personnel control, if the fire cannot be quickly handled when it occurs, it will lead to the spread of the fire and cause greater losses. Therefore, a self-extinguishing outdoor energy storage battery cabinet and a fire extinguishing method therefor are proposed. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a self-extinguishing outdoor energy storage battery cabinet and a fire extinguishing method therefor, so as to automatically extinguish the energy storage modules used outdoors, avoid the spread of the fire, and reduce losses.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A self-extinguishing outdoor energy storage battery cabinet of the present invention includes a cabinet body. A cover plate is provided at the upper end of the cabinet body, and the cover plate is detachably connected to the cabinet body. The lower end of the cabinet body is fixed on a ground foundation. A plurality of suspension ropes are evenly arranged on the side surface of the cover plate facing the ground foundation. One end of the suspension rope is fixed to the cover plate, and an energy storage module is provided at the other end of the suspension rope. One end of the energy storage module is fixed to the other end of the suspension rope. A partition plate is provided between adjacent energy storage modules, and the side surface of the partition plate is fixed to the inner side surface of the cabinet body. A water storage pit is provided downward in the ground foundation. Turning plates are symmetrically provided at the lower end of the cabinet body. The turning plates separate the cabinet body from the water storage tank, and the vertical projection of the water storage pit completely covers a plurality of energy storage modules. Fire extinguishing liquid is provided in the water storage pit. When the energy storage module catches fire spontaneously, the burning flame or high temperature will burn off the suspension rope, causing the battery module to fall into the water storage pit under the action of gravity.

[0006] Further, a shaft is provided on the ground foundation outside the cabinet body. The depth of the shaft matches the depth of the sump pit. A communication hole is provided at the upper part of the shaft, which connects the shaft and the sump pit. A hollow plate is provided at the upper end of the shaft, and the hollow plate is detachably connected to the end of the shaft. A drainage ditch is provided at the lower end of the shaft, and the drainage ditch drains the rainwater entering the shaft. The other end of the energy storage module is provided with a towing rope. One end of the towing rope is fixed to the end of the energy storage module, and the other end of the towing rope is detachably connected to one side of the sump pit where the communication hole is provided.

[0007] Further, a water guiding inclined plate is provided at the upper end of the shaft. One end of the water guiding inclined plate is detachably connected to the upper end of the shaft, and the other end of the water guiding inclined plate extends from the middle of the communication hole into the sump pit.

[0008] Further, a shock absorption and limiting mechanism is provided on the energy storage module. The shock absorption and limiting mechanism includes a collar. The collar is arranged in the middle of the energy storage module, and the energy storage module is located inside the collar. A plurality of suspension rods are provided on the upper surface of the collar. One end of the suspension rod is fixed to the collar, and the other end of the suspension rod is fixed to the cover plate. A plurality of circumferentially evenly distributed sliding rods are provided on the outer surface of the collar. The sliding rods are slidably connected to the collar. One end of the sliding rod faces the energy storage module and contacts the energy storage module. A first buffer spring is sleeved on the other end of the sliding rod. One end of the first buffer spring is fixed to the collar, and the other end of the first buffer spring is fixed to the other end of the sliding rod. The suspension rope is an elastic rope. A first contact roller is provided at the end of the sliding rod facing the energy storage module. The first contact roller is fixed to the sliding rod, and the surface of the first contact roller is in sliding contact with the energy storage module.

[0009] Further, V-shaped plates are symmetrically provided on the collar. The closed end of the V-shaped plate is rotatably connected to the collar, and the open end of the V-shaped plate faces the energy storage module. Installation grooves are provided at both ends of the V-shaped plate. A rotating rod is provided in the installation groove. A first rotating shaft is provided in the middle of the rotating rod, and the first rotating shaft rotatably connects the rotating rod in the installation groove. An installation plate is provided outside one end of the installation groove close to the closed end of the V-shaped plate. One end of the installation plate is fixed to the V-shaped plate. A second buffer spring is provided on the installation plate. One end of the second buffer spring is fixed to the installation plate, and the other end of the second buffer spring is fixed to the end of the rotating rod. The rotating rods at the open end of the V-shaped plate are respectively in contact with the upper end and the lower end of the energy storage module. A second contact roller is provided at the end of the rotating rod in contact with the energy storage module. The second contact roller is fixed to the end of the rotating rod, and the outer side surface of the second contact roller is in sliding contact with the end surface of the energy storage module.

[0010] Further, a cutting knife is provided at the open end of the V-shaped plate near the end of the suspension rope. The back of the cutting knife is fixed to the V-shaped plate, and the blade of the cutting knife faces the connecting wire of the energy storage module. The connecting wire of the energy storage module is electrically connected to one end of the suspension rope of the energy storage module, and the other end of the connecting wire passes through the cover plate.

[0011] Further, a connecting block is provided at the closed end of the V-shaped plate. A second rotating shaft is provided on the connecting block. Fixing plates are provided at both ends of the second rotating shaft. One end of the fixing plate is connected to the second rotating shaft, and the other end of the fixing plate is fixed to the collar.

[0012] A fire extinguishing method for a self-extinguishing outdoor energy storage battery cabinet includes the following steps:

[0013] S1. When the energy storage module catches fire, under the action of the flame or high temperature, the suspension rope is burned off;

[0014] S2. After the energy storage module loses the function of the suspension rope, it drops downward under the action of gravity;

[0015] S3. When the energy storage module drops downward, it will squeeze the V-shaped plate, causing the end of the V-shaped plate to rotate outward and contact the side of the energy storage module. At this time, one end of the V-shaped plate provided with the cutting knife will rotate towards the middle, and then cut off the connecting wire of the energy storage module;

[0016] S4. The energy storage module loses the functions of the suspension rope and the connecting wire, and will fall into the water storage pit and be submerged by the water in the water storage pit, thereby realizing the fire extinguishing operation.

[0017] The beneficial effects of the present invention are as follows:

[0018] In this technical solution, the energy storage module is suspended inside the cabinet by using a suspension rope. When the energy storage module catches fire, the suspension rope will be burned off, and then the energy storage battery will fall into the water storage pit under its own gravity, thereby realizing automatic fire extinguishing. The advantage of this setting method is that it is suitable for outdoor settings, and in this way, without the access of electronic components, automatic fire extinguishing can be achieved for the burning energy storage module. At the same time, the fire extinguishing method is simple and reliable, and will not affect other non-burning energy storage modules.

[0019] Other advantages, objectives, and features of the present invention will be described in the following specification, and to some extent, will be obvious to those skilled in the art, or those skilled in the art can obtain teachings from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following specification. Description of the Drawings

[0020] In order to make the objectives, technical solutions, and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0021] Figure 1 It is an internal schematic diagram of the self - extinguishing outdoor energy storage battery cabinet of the present invention;

[0022] Figure 2 It is an internal schematic diagram of the self - extinguishing outdoor energy storage battery cabinet in another direction of the present invention;

[0023] Figure 3 It is a three - dimensional internal schematic diagram of the self - extinguishing outdoor energy storage battery cabinet of the present invention;

[0024] Figure 4 It is a three - dimensional schematic diagram of the shock - absorbing and position - limiting mechanism in the self - extinguishing outdoor energy storage battery cabinet of the present invention;

[0025] Figure 5 It is a front - view schematic diagram of the shock - absorbing and position - limiting mechanism in the self - extinguishing outdoor energy storage battery cabinet of the present invention.

[0026] The markings in the attached drawings are as follows:

[0027] 1. Cabinet body; 2. Cover plate; 3. Ground foundation; 4. Sump pit; 5. Fire - extinguishing liquid; 6. Suspension rope; 7. Connecting wire; 8. Energy storage module; 9. Shaft well; 10. Communication hole; 11. Hollowed - out plate; 12. Drainage ditch; 13. Towing rope; 14. Flipping plate; 15. Partition board; 16. Collar; 17. Suspension rod; 18. Slide rod; 19. First buffer spring; 20. First contact roller; 21. V - shaped plate; 22. Installation groove; 23. First rotating shaft; 24. Rotating rod; 25. Installation plate; 26. Second buffer spring; 27. Connecting block; 28. Fixed plate; 29. Second rotating shaft; 30. Second contact roller; 31. Cutting knife; 32. Water - guiding inclined plate. Detailed implementation manners

[0028] As Figures 1 to 5 shown, a self - extinguishing outdoor energy storage battery cabinet includes a cabinet body 1. A cover plate 2 is provided at the upper end of the cabinet body 1. The cover plate 2 is detachably connected to the cabinet body 1. The lower end of the cabinet body 1 is fixed on the ground foundation 3. A plurality of suspension ropes 6 are evenly arranged on the side surface of the cover plate 2 facing the ground foundation 3. One end of the suspension rope 6 is fixed on the cover plate 2, and an energy storage module 8 is provided at the other end of the suspension rope 6. One end of the energy storage module 8 is fixed on the other end of the suspension rope 6. A partition board 15 is provided between adjacent energy storage modules 8. The side surface of the partition board 15 is fixed on the inner side surface of the cabinet body 1. The ground foundation 3 is provided with a sump pit 4 downward. The lower end of the cabinet body 1 is symmetrically provided with flipping plates 14. The flipping plates 14 separate the cabinet body 1 and the sump, and the vertical projection of the sump pit 4 completely covers a plurality of energy storage modules 8. The sump pit 4 is filled with a fire - extinguishing liquid 5, preferably water. When the energy storage module 8 catches fire spontaneously, the burning flame or high temperature will burn off the suspension rope 6, causing the battery module to fall into the sump pit 4 under the action of gravity.

[0029] The flip plate 14 is arranged such that its side is rotatably connected to the cabinet body 1, and a torsion spring is provided at the rotatable connection part. Under normal conditions, the flip plate 14 horizontally separates the cabinet body 1 and the water storage pit 4. When the energy storage module 8 drops, the flip plate 14 rotates under the gravity of the energy storage module 8, causing the energy storage module 8 to fall into the water storage pit 4, and then automatically reset under the action of the torsion spring, preventing the smoke and dust of the burning energy storage module 8 from entering the interior of the cabinet body 1.

[0030] The working principle of the above technical solution is as follows;

[0031] The energy storage module 8 is suspended inside the cabinet body 1 by using the lifting rope 6. When the energy storage module 8 catches fire, the lifting rope 6 will be burned off, and then the energy storage battery will fall into the water storage pit 4 under its own gravity, thus realizing automatic fire extinguishing. The advantage of this setting method is that it is suitable for outdoor installation, and in this way, without the access of electronic components, automatic fire extinguishing can be achieved for the on-fire energy storage module 8. At the same time, the fire extinguishing method is simple and reliable, and it will not affect the other intact energy storage modules 8.

[0032] It is not difficult to understand that the flip plate 14 is arranged such that its side is rotatably connected to the cabinet body 1, and a torsion spring is provided at the rotatable connection part. Under normal conditions, the flip plate 14 horizontally separates the cabinet body 1 and the water storage pit 4. When the energy storage module 8 drops, the flip plate 14 rotates under the gravity of the energy storage module 8, causing the energy storage module 8 to fall into the water storage pit 4, and then automatically reset under the action of the torsion spring, preventing the smoke and dust of the burning energy storage module 8 from entering the interior of the cabinet body 1.

[0033] Preferably, in this technical solution, the way the lifting rope 6 lifts the energy storage module 8 is that the same lifting rope 6 winds around the side and bottom of the energy storage module 8, and then the lifting rope 6 is hung on the cover plate 2. The advantage of this is that when the volume of the energy storage module 8 is large, no matter where it catches fire, the lifting rope 6 can be burned off. Any position of a complete lifting rope 6 being burned off can make it break away from the binding of the energy storage module 8. The advantage of this is that through the multi-point and multi-location setting of the lifting rope 6, when the energy storage module 8 catches fire initially, the lifting rope 6 can be burned off, and the fire extinguishing operation can be realized earlier.

[0034] In an implementable way, a shaft well 9 is provided on the ground foundation 3 outside the cabinet body 1. The depth of the shaft well 9 matches the depth of the water storage pit 4. A communication hole 10 is provided in the upper part of the shaft well 9, and the communication hole 10 connects the shaft well 9 and the water storage pit 4. A hollow plate 11 is provided at the upper end of the shaft well 9, and the hollow plate 11 is detachably connected to the end of the shaft well 9. A drainage ditch 12 is provided at the lower end of the shaft well 9, and the drainage ditch 12 drains the rainwater entering the shaft well 9. The other end of the energy storage module 8 is provided with a traction rope 13. One end of the traction rope 13 is fixed to the end of the energy storage module 8, and the other end of the traction rope 13 is detachably connected to one side surface of the water storage pit 4 where the communication hole 10 is provided.

[0035] Through the arrangement of the shaft 9, the operator can enter the shaft 9. By pulling the towing rope 13 at the communication hole 10, the energy storage module 8 that has fallen into the water storage pit 4 can be salvaged. At the same time, due to the arrangement of the towing rope 13, when the on-fire energy storage module 8 falls downward into the water storage pit 4, it will flip. Because when on fire, the flames generally shoot upward, resulting in serious damage to the upper part. Therefore, through the flipping method, the upper end of the energy storage battery is inserted deeper into the water, and the fire extinguishing effect is further ensured under the action of water pressure. At the same time, the shaft 9 can also serve as a smoke exhaust passage for the combustion of the energy storage module 8 in the water storage pit 4.

[0036] In an implementable manner, a water guiding inclined plate 32 is provided at the upper end of the shaft 9. One end of the water guiding inclined plate 32 is detachably connected to the upper end of the shaft 9, and the other end of the water guiding inclined plate 32 extends from the middle of the communication hole 10 into the water storage pit 4.

[0037] The arrangement of the water guiding inclined plate 32 can supplement the rainwater entering the shaft 9, avoiding the situation of water shortage in the water storage pit 4. At the same time, when the water level in the water storage pit 4 reaches the communication hole 10, the excess water is discharged from the communication hole 10 into the shaft 9 and then discharged from the shaft 9. This arrangement is used to ensure the water level in the water outlet pit. At the same time, it is not difficult to understand that the edge of the flipping plate 14 can be provided with a sealing strip or the like to prevent the water vapor in the lower water storage pit 4 from entering the cabinet body 1.

[0038] In an implementable manner, a shock absorption and limit mechanism is provided on the energy storage module 8. The shock absorption and limit mechanism includes a collar 16. The collar 16 is arranged in the middle of the energy storage module 8, and the energy storage module 8 is located inside the collar 16. A plurality of suspension rods 17 are provided on the upper surface of the collar 16. One end of the suspension rod 17 is fixed to the collar 16, and the other end of the suspension rod 17 is fixed to the cover plate 2. A plurality of circumferentially evenly distributed sliding rods 18 are provided on the outer surface of the collar 16. The sliding rods 18 are slidably connected to the collar 16. One end of the sliding rod 18 faces the energy storage module 8 and is in contact with the energy storage module 8. A first buffer spring 19 is sleeved on the other end of the sliding rod 18. One end of the first buffer spring 19 is fixed to the collar 16, and the other end of the first buffer spring 19 is fixed to the other end of the sliding rod 18. The suspension rope 6 is an elastic rope. A first contact roller 20 is provided at the end of the sliding rod 18 facing the energy storage module 8. The first contact roller 20 is fixed to the sliding rod 18, and the surface of the first contact roller 20 is in sliding contact with the energy storage module 8.

[0039] When the energy storage module 8 is subjected to an external force or an earthquake force, it will shake, which is likely to cause damage. Therefore, a shock-absorbing and limiting mechanism is provided. When the energy storage module 8 is subjected to a force, it will squeeze the first contact roller 20, thereby driving the sliding rod 18 to move. Further, the sliding rod 18 squeezes the first buffer spring 19, so as to buffer the force received by the energy storage battery and prevent it from shaking greatly. The setting of the hanging rod 17 fixes the collar 16 to the cover plate 2. Under the normal extrusion action of the circumferentially distributed first contact rollers 20, the hanging stability of the energy storage module 8 can be ensured. At the same time, this setting method will not interfere with or affect the falling of the energy storage module 8 under the action of gravity.

[0040] In an implementable manner, V-shaped plates 21 are symmetrically arranged on the collar 16. The closed ends of the V-shaped plates 21 are rotatably connected to the collar 16, and the open ends of the V-shaped plates 21 are arranged towards the energy storage module 8. Installation grooves 22 are provided at both ends of the V-shaped plates 21. A rotating rod 24 is arranged in the installation groove 22. A first rotating shaft 23 is arranged in the middle of the rotating rod 24. The first rotating shaft 23 rotatably connects the rotating rod 24 in the installation groove 22. An installation plate 25 is arranged outside one end of the installation groove 22 close to the closed end of the V-shaped plate 21. One end of the installation plate 25 is fixed to the V-shaped plate 21. A second buffer spring 26 is arranged on the installation plate 25. One end of the second buffer spring 26 is fixed to the installation plate 25, and the other end of the second buffer spring 26 is fixed to the end of the rotating rod 24. The rotating rods 24 at the open ends of the V-shaped plates 21 are respectively in contact with the upper and lower ends of the energy storage module 8. A second contact roller 30 is arranged at the end of the rotating rod 24 in contact with the energy storage module 8. The second contact roller 30 is fixed to the end of the rotating rod 24, and the outer side surface of the second contact roller 30 is in sliding contact with the end surface of the energy storage module 8.

[0041] The second contact roller 30 is in contact with the energy storage module 8. When the energy storage module 8 moves up and down under an external force, it will squeeze the second contact roller 30, that is, drive the rotating rod 24 to rotate, and then squeeze the second buffer spring 26, thereby realizing the vertical buffering and stable holding of the energy storage module 8. It is not difficult to understand that the suspension rope 6 is preferably an elastic rope here.

[0042] In an implementable manner, a cutter 31 is arranged at the end of the open end of the V-shaped plate 21 close to the suspension rope 6. The back of the cutter 31 is fixed to the V-shaped plate 21. The blade of the cutter 31 faces the connecting wire 7 of the energy storage module 8. And the connecting wire 7 of the energy storage module 8 is electrically connected to one end of the suspension rope 6 of the energy storage module 8. The other end of the connecting wire 7 passes through the cover plate 2.

[0043] The advantage of this is that the suspension rope 6 can be burned off during a fire. Since the wire contains metal, such as copper wire, it cannot be burned off within a short period of time. And if the energy storage module 8 is allowed to fall without disconnecting the connecting wire 7 from the energy storage module 8, the connecting wire 7 will pull the components connected to it, causing damage to the remaining components. Therefore, by setting the V-shaped plate 21, when the energy storage module 8 falls, the lower part of the V-shaped plate 21 contacts the side of the energy storage module 8 and then rotates outwards, while the upper end of the V-shaped plate 21 rotates inwards, that is, the symmetrically arranged cutting knives 31 will come closer to cut off the wire, so that the fall of the energy storage module 8 will not affect the other components. It is not difficult to understand that the second contact roller 30 provided at the lower end of the energy storage module 8 can be set as a contact inclined plate, one end of the contact inclined plate is located below the end of the energy storage module 8, and one end is located outside the side, that is, in contact with the edge of the energy storage module 8, which can avoid interfering with the fall of the energy storage module 8.

[0044] In an implementable manner, a connecting block 27 is provided on the closed end of the V-shaped plate 21. A second rotating shaft 29 is provided on the connecting block 27. Fixed plates 28 are provided at both ends of the second rotating shaft 29. One end of the fixed plate 28 is connected to the second rotating shaft 29, and the other end of the fixed plate 28 is fixed to the collar 16.

[0045] A fire extinguishing method for a self-extinguishing outdoor energy storage battery cabinet includes the following steps:

[0046] S1. When the energy storage module 8 catches fire, under the action of the flame or high temperature, the suspension rope 6 is burned off;

[0047] S2. After the energy storage module 8 loses the function of the suspension rope 6, it falls downward under the action of gravity;

[0048] S3. When the energy storage module 8 falls downward, it will squeeze the V-shaped plate 21, causing the end of the V-shaped plate 21 to rotate outwards and contact the side of the energy storage module 8. At this time, one end of the V-shaped plate 21 provided with the cutting knife 31 will rotate towards the middle, and then cut off the connecting wire 7 of the energy storage module 8;

[0049] S4. The energy storage module 8 loses the functions of the suspension rope 6 and the connecting wire 7, and will fall into the water storage pit 4 and be submerged by the water in the water storage pit 4, thereby realizing the fire extinguishing operation.

[0050] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. An outdoor energy storage battery cabinet with self-extinguishing function, characterized in that: It includes a cabinet body (1), a cover plate (2) is provided at the upper end of the cabinet body (1), the cover plate (2) is detachably connected to the cabinet body (1), the lower end of the cabinet body (1) is fixed on the ground foundation (3), a plurality of suspension ropes (6) are evenly distributed on the side surface of the cover plate (2) facing the ground foundation (3), one end of the suspension rope (6) is fixed on the cover plate (2), an energy storage module (8) is provided at the other end of the suspension rope (6), one end of the energy storage module (8) is fixed on the other end of the suspension rope (6), a partition plate (15) is provided between adjacent energy storage modules (8), and the side surface of the partition plate (15) is fixed on the inner side surface of the cabinet body (1). The ground foundation (3) is provided with a water storage pit (4) downward, the lower end of the cabinet body (1) is symmetrically provided with a turning plate (14), the turning plate (14) separates the cabinet body (1) from the water storage tank, and the vertical projection of the water storage pit (4) completely covers a plurality of energy storage modules (8). A fire extinguishing liquid (5) is provided in the water storage pit (4). When the energy storage module (8) catches fire spontaneously, the burning flame or high temperature will burn off the suspension rope (6), causing the battery module to fall into the water storage pit (4) under the action of gravity.

2. The self-extinguishing outdoor energy storage battery cabinet according to claim 1, wherein: A shaft (9) is provided on the ground foundation (3) outside the cabinet body (1), the depth of the shaft (9) matches the depth of the water storage pit (4), a communication hole (10) is provided in the upper part of the shaft (9), the communication hole (10) connects the shaft (9) and the water storage pit (4), a hollow plate (11) is provided at the upper end of the shaft (9), the hollow plate (11) is detachably connected to the end of the shaft (9), a drainage ditch (12) is provided at the lower end of the shaft (9), and the drainage ditch (12) drains the rainwater entering the shaft (9). The other end of the energy storage module (8) is provided with a towing rope (13), one end of the towing rope (13) is fixed on the end of the energy storage module (8), and the other end of the towing rope (13) is detachably connected to one side surface of the water storage pit (4) where the communication hole (10) is provided.

3. The self-extinguishing outdoor energy storage battery cabinet according to claim 1, characterized in that: A water guiding inclined plate (32) is provided at the upper end of the shaft (9), one end of the water guiding inclined plate (32) is detachably connected to the upper end of the shaft (9), and the other end of the water guiding inclined plate (32) extends from the middle of the communication hole (10) into the water storage pit (4).

4. The self-extinguishing outdoor energy storage battery cabinet according to claim 1, characterized in that: The energy storage module (8) is provided with a shock absorption and limiting mechanism. The shock absorption and limiting mechanism includes a collar (16). The collar (16) is arranged in the middle of the energy storage module (8), and the energy storage module (8) is located inside the collar (16). The upper surface of the collar (16) is provided with a plurality of suspension rods (17). One end of the suspension rod (17) is fixed to the collar (16), and the other end of the suspension rod (17) is fixed to the cover plate (2). The outer surface of the collar (16) is provided with a plurality of sliding rods (18) evenly distributed in a circumferential manner. The sliding rods (18) are slidably connected to the collar (16). One end of the sliding rod (18) faces the energy storage module (8) and is in contact with the energy storage module (8). A first buffer spring (19) is sleeved on the other end of the sliding rod (18). One end of the first buffer spring (19) is fixed to the collar (16), and the other end of the first buffer spring (19) is fixed to the other end of the sliding rod (18). The suspension rope (6) is an elastic rope. A first contact roller (20) is provided at the end of the sliding rod (18) facing the energy storage module (8). The first contact roller (20) is fixed to the sliding rod (18), and the surface of the first contact roller (20) is in sliding contact with the energy storage module (8).

5. The self-extinguishing outdoor energy storage battery cabinet according to claim 4, characterized in that: V-shaped plates (21) are symmetrically arranged on the collar (16). The closed end of the V-shaped plate (21) is rotatably connected to the collar (16), and the open end of the V-shaped plate (21) faces the energy storage module (8). Mounting grooves (22) are provided at both ends of the V-shaped plate (21). A rotating rod (24) is arranged in the mounting groove (22). A first rotating shaft (23) is provided in the middle of the rotating rod (24). The first rotating shaft (23) rotatably connects the rotating rod (24) in the mounting groove (22). A mounting plate (25) is provided outside one end of the mounting groove (22) close to the closed end of the V-shaped plate (21). One end of the mounting plate (25) is fixed to the V-shaped plate (21). A second buffer spring (26) is provided on the mounting plate (25). One end of the second buffer spring (26) is fixed to the mounting plate (25), and the other end of the second buffer spring (26) is fixed to the end of the rotating rod (24). The rotating rods (24) at the open end of the V-shaped plate (21) are respectively in contact with the upper end and the lower end of the energy storage module (8). A second contact roller (30) is provided at the end of the rotating rod (24) in contact with the energy storage module (8). The second contact roller (30) is fixed to the end of the rotating rod (24), and the outer side surface of the second contact roller (30) is in sliding contact with the end face of the energy storage module (8).

6. The self-extinguishing outdoor energy storage battery cabinet according to claim 5, characterized in that: A cutter (31) is provided at the end of the open end of the V-shaped plate (21) close to the suspension rope (6). The back of the cutter (31) is fixed to the V-shaped plate (21). The blade of the cutter (31) faces the connecting wire (7) of the energy storage module (8). The connecting wire (7) of the energy storage module (8) is electrically connected to one end of the energy storage module (8) provided with the suspension rope (6), and the other end of the connecting wire (7) passes through the cover plate (2).

7. The self-extinguishing outdoor energy storage battery cabinet according to claim 6, wherein: A connecting block (27) is provided on the closed end of the V-shaped plate (21). A second rotating shaft (29) is provided on the connecting block (27). Fixing plates (28) are provided at both ends of the second rotating shaft (29). One end of the fixing plate (28) is connected to the second rotating shaft (29), and the other end of the fixing plate (28) is fixed to the collar (16).

8. A fire extinguishing method for a self-extinguishing outdoor energy storage battery cabinet according to any one of claims 1-7, characterized in that: It includes the following steps: S1. When the energy storage module (8) catches fire, under the action of the flame or high temperature, the suspension rope (6) is burned off; S2. After the energy storage module (8) loses the function of the suspension rope (6), it drops downward under the action of gravity; S3. When the energy storage module (8) drops downward, it will squeeze the V-shaped plate (21), causing the end of the V-shaped plate (21) to rotate outward and contact the side surface of the energy storage module (8). At this time, one end of the V-shaped plate (21) provided with the cutting knife (31) will rotate towards the middle, thereby cutting off the connecting wire (7) of the energy storage module (8); S4. After the energy storage module (8) loses the functions of the suspension rope (6) and the connecting wire (7), it will fall into the water storage pit (4) and be submerged by the water in the water storage pit (4), thereby achieving the fire extinguishing operation.

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