Battery storage box with pressure relief explosion-proof structure

Abstract

The utility model discloses a battery storage box with pressure relief anti -explosion structure is provided with exhaust port in the top of box, and exhaust port is connected with strong exhaust pipe, and strong exhaust pipe is rotatably installed with the pivot in, and the pivot is fixed with the fan blade on, and the fan blade top is equipped with driven sprocket, and the driven sprocket top is equipped with the net, and the pivot top of net top is still fixed with the cross bar, and the cross bar upper end is fixed with the cutting knife that extends upwards and strings out strong exhaust pipe top pipe orifice, and the cutting knife top is wrapped with the barrier material that can wear and remove, and strong exhaust pipe top pipe orifice still detachably cover is equipped with the pipe cover that is composed of waterproof cloth or waterproof film, and the bottom surface of pipe cover is fixed with the polishing surface and is in contact with the cutting knife tip, and the movement track of cutting knife tip when rotating with pivot passes through the polishing surface, and the motor is still suspended and erected outside the box, and the output shaft of motor is fixed with the driving sprocket, and the side wall of strong exhaust pipe still is equipped with the second outlet, and the driving sprocket and driven sprocket are driven through chain, and the chain goes in and out strong exhaust pipe through the second outlet.

Description

Technical Field

[0001] This utility model relates to the field of battery energy storage technology, specifically to a battery storage box with a pressure relief and explosion-proof structure. Background Technology

[0002] Energy storage battery compartments are devices used to store excess electrical energy. They generally adopt a multi-level modular design of battery cells, battery modules, and battery clusters. For example, an energy storage system uses lithium iron phosphate batteries with a single cell capacity of 280Ah. Each battery pack consists of 16 cells connected in series (1P16S), and each cluster contains 25 battery packs + 1 MSD (manual maintenance switch) + 1 high-voltage control box, for a total of 14 battery clusters.

[0003] The battery storage box, serving as the external shell structure of the energy storage battery compartment, provides an installation space. Its internal structure is complex, housing battery racks, a battery management system (BMS), DC combiner cabinets, AC control cabinets, data acquisition devices, environmental control equipment (temperature and humidity monitoring), thermal management equipment, power distribution equipment, fire protection systems, combustible gas detection systems, alarm systems, connecting cables, control cables, door-controlled lighting, video surveillance, and other equipment. Therefore, to protect the safe operation of the internal equipment, the battery storage box walls, except for ventilation and heat dissipation channels, are relatively enclosed.

[0004] The urgent problem to be solved is how to contain a fire within a single battery storage box when a battery cell accidentally catches fire, preventing explosions and deflagrations that could damage nearby personnel and equipment. A battery cell fire generates a large amount of heat and releases a large amount of flammable gas mixture, which can quickly ignite nearby cells until all cells are burning. The inside of the battery storage box will quickly become a high-temperature, high-pressure, and high-smoke environment. The internal fire suppression system can only delay the fire, not extinguish it. Therefore, it is necessary to design a pressure-relief and explosion-proof structure for the battery storage box, capable of rapidly expelling the internal gas mixture in the event of a fire, significantly delaying the occurrence of explosions and deflagrations, and buying time for rescue efforts. Utility Model Content

[0005] The purpose of this invention is to provide a battery storage box with a pressure relief and explosion-proof structure to solve the problems described in the background art.

[0006] The technical solution of this utility model is implemented as follows:

[0007] A battery storage box with a pressure relief and explosion-proof structure includes a box body. An exhaust port is located on the top of the box body. A forced exhaust pipe is sealed to the upper end of the exhaust port. A rotating shaft is vertically mounted inside the forced exhaust pipe. A fan blade is fixed on the rotating shaft. A driven sprocket is fixed on the rotating shaft above the fan blade. A mesh is located above the driven sprocket. The outer edge of the mesh is fixedly connected to the inner wall of the forced exhaust pipe. The rotating shaft rotates through the mesh. A crossbar is also fixed on the rotating shaft above the mesh. A cutting blade extending upwards and exiting through the top opening of the forced exhaust pipe is fixed to the upper end of the crossbar. The cutting tip is covered with a wear-removable barrier material. The top opening of the forced exhaust pipe is also detachably covered with a pipe cover made of waterproof cloth or waterproof membrane. The bottom surface of the pipe cover is fixed with a polished surface that abuts against the cutting tip. The movement trajectory of the cutting tip as it rotates with the shaft passes through the polished surface. A motor is also suspended outside the housing. A drive sprocket is fixed on the output shaft of the motor. A second outlet is also opened on the side wall of the forced exhaust pipe. The drive sprocket and the driven sprocket are connected by a chain. The chain enters and exits the forced exhaust pipe through the second outlet.

[0008] A further technical solution is that at least two layers of bearing frames distributed vertically are fixedly provided on the inner wall of the forced exhaust pipe. The bearing frame includes a mounting ring. The side wall of the mounting ring is fixedly connected to the inner wall of the forced exhaust pipe by a connecting rod. A bearing is fixedly provided inside the mounting ring. The rotating shaft is rotatably installed in the bearing. An upper limit part and a lower limit part are also fixedly sleeved on the rotating shaft. The lower limit part is located at the bottom of the lowest bearing, and the upper limit part is located at the top of the highest bearing. The outer diameter of both the upper limit part and the lower limit part is larger than the outer diameter of the bearing.

[0009] A further technical solution is that the barrier net includes a net frame, an inner ring, and a stainless steel mesh. The inner ring is located inside the net frame, and the stainless steel mesh is used to fix and connect the net frame and the inner ring. The rotating shaft is rotatably inserted through the inner ring, and the net frame is fixedly connected to the inner wall of the forced drainage pipe.

[0010] A further technical solution is that an installation strip is fixed on the inner wall of the forced-draft pipe, and the mesh frame is placed on the upper end of the installation strip, with the mesh frame detachably screwed onto the installation strip.

[0011] A further technical solution is that a ring is fixedly fitted on the rotating shaft at the upper end of the barrier net, and there are at least two crossbars. The crossbars are fixed at equal angular intervals on the ring with the central axis of the rotating shaft as the center. The crossbars are horizontally set, and there are at least two cutting blades on each crossbar, which are spaced apart and perpendicular to the crossbar.

[0012] A further technical solution is to have a semi-circular blade at the top of the cutting blade.

[0013] A further technical solution is that a first water baffle is detachably fixed on the outer wall of the forced discharge pipe. The first water baffle includes two side plates and a top plate. The two side plates are fixedly installed at intervals below the top plate. The first water baffle is located at the upper end of the second outlet. The bottom of the side plates is lower than the bottom of the second outlet. The chain is located within the enclosed space of the two side plates and the top plate.

[0014] A further technical solution is that a support rod is fixed to the top of the box, and a guide frame is fixed to the top of the support rod. The guide frame is hollow and open at both ends, and the chain slides through the guide frame.

[0015] A further technical solution is that a support frame is fixed to the ground outside the box, a motor box is fixed to the top of the support frame, the motor is fixed in the motor box, and a first outlet is opened on the side wall of the motor box, through which the chain enters and exits the motor box.

[0016] A further technical solution is that a second water baffle is detachably fixed on the outer wall of the motor box. The second water baffle includes two side plates and a top plate. The two side plates are fixedly spaced below the top plate. The second water baffle is located at the upper end of the first outlet. The bottom of the side plates is lower than the bottom of the first outlet. The chain is located within the enclosed space of the two side plates and the top plate.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. Modify the top of the original battery compartment to avoid redesign, which is convenient and low-cost.

[0019] 2. The motor is located outside the enclosure and connected to a separate power source to prevent power failure and motor damage in case of fire inside the enclosure.

[0020] 3. The cutting blade is paired with a pipe cover. The tip of the cutting blade is equipped with a removable barrier material to prevent cutting and breakage when there is no fire, and to quickly expose the blade tip for cutting when there is a fire. It also prevents rainwater from entering when there is no fire, and allows the pipe cover to be quickly removed when there is a fire, thus achieving both rain protection and rapid obstacle removal.

[0021] 4. The netting prevents the pipe cover from falling off and damaging the transmission structure and hindering rotation. In case of fire, the pipe cover will be blown outside the forced exhaust pipe.

[0022] 5. The first and second water-blocking covers prevent rainwater from entering the motor box and housing through the first and second outlets.

[0023] 6. The upper and lower structures of each component inside the forced-draft pipe are designed to facilitate assembly.

[0024] 7. It can quickly and actively expel the internal mixed gas in the event of a fire, significantly delaying the occurrence of explosion and deflagration, thus buying time for rescue. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0026] Figure 2 for Figure 1 Internal structural sectional view;

[0027] Figure 3 for Figure 2 Enlarged view of part of the structure;

[0028] Figure 4 This is an enlarged view of the internal structure of the forced-draft pipe;

[0029] Figure 5 This is a top view of the internal structure of the forced-draft pipe;

[0030] Figure 6 This is a top view diagram of the bearing installation.

[0031] Figure 7 The diagram shows a top view of the installation of the upper limit unit;

[0032] Figure 8 This is a top view diagram showing the installation of the fan blades;

[0033] Figure 9 This is a top view diagram showing the installation of the driven sprocket and chain;

[0034] Figure 10 This is a top-view diagram showing the installation of the barrier net;

[0035] Figure 11 This is a top view diagram showing the installation of the crossbar and the cutting blade.

[0036] In the diagram, 1. Box body, 2. Forced exhaust pipe, 3. Waterproof cloth, 4. First water baffle, 5. Guide frame, 6. Chain, 7. Second water baffle, 8. Support frame, 9. Motor box, 10. Motor, 11. Drive sprocket, 12. First outlet, 13. Support rod, 14. Exhaust port, 15. Connecting rod, 16. Mounting ring, 17. Bearing, 18. Lower limit part, 19. Upper limit part, 20. Rotating shaft, 21. Fan blade, 22. Driven sprocket, 23. Second outlet, 24. Mounting strip, 25. Mesh frame, 26. Ring sleeve, 27. Crossbar, 28. Cutting blade, 29. Inner ring. Detailed Implementation

[0037] To better understand the technical content of this utility model, specific embodiments are provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0038] See Figures 1 to 11A battery storage box with a pressure relief and explosion-proof structure is disclosed, comprising a box body 1. It should be noted that the box body 1 referred to in this disclosure is not a blank box body 1, but rather a top modification of the original box body 1 of the energy storage battery compartment. The energy storage battery compartment is a commonly used structure in the prior art and is currently quite mature in use. Therefore, the functions and structure of the box body 1 itself are assumed to be in normal working order. For example, the electrical control cabinet, controller, temperature and humidity monitoring equipment, etc., already present in the box body 1 are all in normal working order. The start-stop control of the motor 10 required in this disclosure needs to be used in conjunction with the temperature sensor inside the box body 1. Of course, an independent external temperature sensor can also be used to achieve the start-stop control of the motor 10. These are all common methods in the prior art, and are only briefly described in this disclosure. Those skilled in the art can fully implement them based on existing electrical knowledge.

[0039] The top of the enclosure 1 has an exhaust port 14, and the upper end of the exhaust port 14 is sealed and welded to a forced exhaust pipe 2. The forced exhaust pipe 2 is a square pipe made of stainless steel. There is no limit to the number of exhaust ports 14 and forced exhaust pipes 2 on each enclosure 1. It can be modified and upgraded according to the actual situation, but it is recommended to have no less than two.

[0040] A rotating shaft 20 is vertically installed inside the forced exhaust pipe 2, and a fan blade 21 is fixed on the rotating shaft 20.

[0041] Specifically, the inner wall of the forced-draft pipe 2 is fixed with two layers of bearing brackets distributed vertically. The bearing brackets include mounting rings 16, which are components with internal circular through holes. The sidewalls of the mounting rings 16 are welded to the inner wall of the forced-draft pipe 2 via connecting rods 15. Bearings 17 are fixed inside the mounting rings 16. The bearings 17 need to be high-temperature resistant bearings 17, with bearings 17 with a temperature resistance of not less than 600℃ being the optimal choice. The rotating shaft 20 is rotatably mounted in the bearing 17. An upper limit part 19 and a lower limit part 18 are also fixedly fitted onto the rotating shaft 20. The lower limit part 18 is located at the bottom of the lowest bearing 17, and the upper limit part 19 is located at the top of the highest bearing 17. The outer diameters of both the upper limit part 19 and the lower limit part 18 are larger than the outer diameter of the bearing 17, used to hold the rotating shaft 20 in place and prevent it from moving up and down. Alternatively, the rotation could be limited by the friction between the rotating shaft 20 and the bearing 17, but the use of the upper limit part 19 and the lower limit part 18 provides a more stable limiting effect. The upper limit part 19 and the lower limit part 18 can be a separate screw-connected structure, consisting of two semi-circular rings clamping the rotating shaft 20 before being screwed together for final clamping.

[0042] A driven sprocket 22 is fixedly mounted on the shaft 20 above the fan blade 21. A second outlet 23 is also provided on the side wall of the forced exhaust pipe 2. A motor 10 is also suspended outside the housing 1. Specifically, a support frame 8 is fixedly mounted on the ground outside the housing 1. A motor housing 9 is fixedly mounted on the top of the support frame 8. The motor 10 is fixed in the motor housing 9. A drive sprocket 11 is fixedly mounted on the output shaft of the motor 10. The drive sprocket 11 and the driven sprocket 22 are connected by a chain 6. The chain 6 enters and exits the forced exhaust pipe 2 through the second outlet 23. A first outlet 12 is provided on the side wall of the motor housing 9. The chain 6 enters and exits the motor housing 9 through the first outlet 12. The edges of the first outlet 12 and the second outlet 23 are provided with rounded chamfers to prevent chain jamming. Motor 10 can be electrically connected to either a controller inside housing 1 or an external controller. The controller can be a PLC controller. Electrical connection to the controller inside housing 1 allows the use of the temperature sensor signal inside housing 1 to start motor 10. Electrical connection to the external controller requires communication between the temperature sensor signal inside housing 1 and the external controller. Motor 10 requires external power.

[0043] Specifically, a first water baffle 4 is detachably fixed on the outer wall of the forced discharge pipe 2. The first water baffle 4 includes two side plates and a top plate. The two side plates are fixedly installed at intervals below the top plate. The first water baffle 4 is located at the upper end of the second outlet 23. The bottom of the side plates is lower than the bottom of the second outlet 23. The chain 6 is located within the enclosed space of the two side plates and the top plate.

[0044] Specifically, a second water baffle 7 is detachably fixed on the outer wall of the motor 10 box 9. The second water baffle 7 includes two side plates and a top plate. The two side plates are fixedly installed at intervals below the top plate. The second water baffle 7 is located at the upper end of the first outlet 12. The bottom of the side plates is lower than the bottom of the first outlet 12. The chain 6 is located within the enclosed space of the two side plates and the top plate.

[0045] The first water baffle 4 and the second water baffle 7 should preferably have the same structure and can be connected to the motor 10 box 9 and the forced discharge pipe 2 by screwing or welding.

[0046] It should be noted that the side wall of motor box 9 is equipped with rainproof heat dissipation holes by default. This type of rainproof heat dissipation hole structure is common in most outdoor electrical cabinets, and the structure will not be described in detail here.

[0047] A support rod 13 is fixed to the top of the housing 1, and a guide frame 5 is fixed to the top of the support rod 13. The guide frame 5 is hollow and open at both ends, and the chain 6 slides through the guide frame 5. The guide frame 5 has a rounded chamfer at the edge to prevent the chain from getting stuck.

[0048] A screen is provided above the driven sprocket 22. The outer edge of the screen is fixedly connected to the inner wall of the forced discharge pipe 2. The rotating shaft 20 is rotatably inserted through the screen.

[0049] Specifically, the barrier net includes a frame 25, an inner ring 29, and a stainless steel mesh. The inner ring 29 is located inside the frame 25, and the stainless steel mesh is used to fix the frame 25 and the inner ring 29. A rotating shaft 20 is rotatably inserted through the inner ring 29. The inner ring 29 is slightly larger than the rotating shaft 20. Preferably, the inner diameter of the inner ring 29 is 5.0-10.0 mm larger than the shaft diameter of the rotating shaft 20. The frame 25 is fixedly connected to the inner wall of the forced-draft pipe 2.

[0050] Specifically, an installation strip 24 is fixed on the inner wall of the forced exhaust pipe 2. The upper end of the installation strip 24 has a threaded hole. The mesh frame 25 is placed on the upper end of the installation strip 24. The mesh frame 25 also has a threaded hole and is detachably screwed onto the installation strip 24 by bolts.

[0051] A crossbar 27 is also fixed on the pivot 20 above the barrier net, and a cutting blade 28 extending upward and passing through the top opening of the forced discharge pipe 2 is fixed on the upper end of the crossbar 27.

[0052] Specifically, a ring 26 is fixedly fitted onto the rotating shaft 20 at the upper end of the barrier net. The ring 26 can also refer to the structure of the upper limit part 19 and the lower limit part 18, and is composed of two semi-circular rings, which are pressed together by screws. There are two crossbars 27. The crossbars 27 are welded to the ring 26 at equal angles with the central axis of the rotating shaft 20 as the center. The crossbars 27 are set horizontally. There are three cutting blades 28 on each crossbar 27, and the cutting blades 28 are set at intervals. The cutting blades 28 are perpendicular to the crossbar 27.

[0053] Preferably, the top of the cutting blade 28 is a semi-circular blade.

[0054] The tip of the cutting blade 28 is covered with a barrier material that can be worn away.

[0055] Preferably, the barrier material can be PP wax or a wax with a melting point higher than 100°C.

[0056] The top opening of the forced-draft pipe 2 is also detachable and covered with a pipe cover made of waterproof cloth 3 or waterproof membrane. The bottom surface of the pipe cover is fixed with a polished surface that abuts against the tip of the cutting blade 28. The movement trajectory of the blade tip as it rotates with the rotating shaft 20 passes through the polished surface.

[0057] Preferably, the thickness of the tube cover is 0.3-0.8 mm, and the polishing surface can be made by pasting sandpaper, with the smooth side of the sandpaper pasted on the bottom surface of the tube cover.

[0058] Working principle of this utility model:

[0059] When a fire occurs inside the energy storage battery compartment, if the motor 10 is linked to the temperature signal inside the battery compartment, the controller will control the motor 10 to rotate. The motor 10 will drive the drive sprocket 11 to rotate, which in turn drives the driven sprocket 22 via the chain 6. The driven sprocket 22 will drive the shaft 20 to rotate, which in turn drives the fan blade 21 and the crossbar 27 to rotate. The crossbar 27 will drive the cutting blade 28 to rotate. The barrier material on the cutting blade 28 will be worn away during rotation as it comes into contact with the grinding surface, exposing the blade tip. The blade tip will then cut through the pipe cover, exposing the upper end of the forced exhaust pipe 2. Under the action of the fan blade 21, the mixed gas inside the housing 1 will be forcibly extracted and discharged into the upper atmosphere, thereby continuously reducing the gas pressure and mixed gas concentration inside the housing 1, significantly delaying the time of explosion and deflagration inside the housing 1, and buying time for rescue. If the motor 10 is not linked to the temperature signal inside the battery compartment, the on-duty personnel will manually turn on the motor 10 after receiving the alarm.

[0060] This device, by setting up an exhaust port 14 and a forced exhaust pipe 2, avoids the need to redesign the original housing 1, making it easy to modify and with low modification costs.

[0061] This device avoids the situation where the power supply fails and cannot be supplied when a fire occurs inside the box 1 by setting the motor 10 outside the box 1 and connecting it to a separate power source, and also avoids the situation where the motor 10 is damaged when a fire occurs inside the box 1.

[0062] This device, through the structure of the cutting blade 28 and the pipe cover, can prevent rainwater from entering the interior of the box 1 when there is no fire, and can quickly remove the pipe cover when a fire occurs.

[0063] This device prevents the pipe cover from being cut and broken by the blade tip when there is no fire by setting a wear-removable barrier material at the tip of the cutting blade 28, and can quickly expose the blade tip for cutting in the event of a fire through rotational wear.

[0064] This device uses a safety net to prevent the pipe cover from falling onto the chain 6 and driven sprocket 22 and damaging the transmission structure, and to prevent it from falling onto the fan blades 21 and obstructing rotation. In the event of a fire, it will also be blown out of the forced exhaust pipe 2 by the wind pressure of the fan blades 21 and the air pressure inside the housing 1.

[0065] This device, by setting a first water-blocking cover 4 and a second water-blocking cover 7, prevents rainwater from entering the motor 10 box 9 and the box body 1 from the first outlet 12 and the second outlet 23.

[0066] This device provides support for the long chain 6 during connection by setting the guide frame 5, thereby improving the stability of the chain 6 transmission.

[0067] The arrangement of the upper and lower structures of the components inside the forced-draft pipe 2 of this device facilitates assembly.

[0068] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery storage box with a pressure relief and explosion-proof structure, comprising a box body, characterized in that: The top of the enclosure has an exhaust port, and a forced exhaust pipe is sealed to the upper end of the exhaust port. A rotating shaft is vertically mounted inside the forced exhaust pipe, and a fan blade is fixed to the shaft. A driven sprocket is fixed to the shaft above the fan blade, and a mesh screen is installed above the driven sprocket. The outer edge of the mesh screen is fixedly connected to the inner wall of the forced exhaust pipe. The rotating shaft rotates through the mesh screen. A crossbar is also fixed to the shaft above the mesh screen. A cutting blade extending upwards and exiting the top opening of the forced exhaust pipe is fixed to the upper end of the crossbar. The tip of the cutting blade is covered with a... The barrier material can be abraded and removed. The top opening of the forced exhaust pipe is also detachably covered with a pipe cover made of waterproof cloth or waterproof membrane. The bottom surface of the pipe cover is fixed with a grinding surface that abuts against the tip of the cutting blade. The movement trajectory of the blade tip as it rotates with the shaft passes through the grinding surface. A motor is also suspended outside the housing. A drive sprocket is fixed on the output shaft of the motor. A second outlet is also opened on the side wall of the forced exhaust pipe. The drive sprocket and the driven sprocket are connected by a chain. The chain enters and exits the forced exhaust pipe through the second outlet.

2. A battery storage box with a pressure relief and explosion-proof structure according to claim 1, characterized in that: The inner wall of the forced-draft pipe is fixedly provided with at least two layers of bearing frames distributed vertically. The bearing frame includes a mounting ring. The side wall of the mounting ring is fixedly connected to the inner wall of the forced-draft pipe by a connecting rod. A bearing is fixedly installed inside the mounting ring. The rotating shaft is rotatably installed in the bearing. An upper limit part and a lower limit part are also fixedly sleeved on the rotating shaft. The lower limit part is located at the bottom of the lowest bearing, and the upper limit part is located at the top of the highest bearing. The outer diameter of both the upper limit part and the lower limit part is larger than the outer diameter of the bearing.

3. A battery storage box with a pressure relief and explosion-proof structure according to claim 2, characterized in that: The barrier net includes a frame, an inner ring, and a stainless steel mesh. The inner ring is located inside the frame, and the stainless steel mesh is used to fix and connect the frame and the inner ring. The rotating shaft is inserted through the inner ring, and the frame is fixedly connected to the inner wall of the forced-flow pipe.

4. A battery storage box with a pressure relief and explosion-proof structure according to claim 3, characterized in that: An installation strip is fixed on the inner wall of the forced-draft pipe, and the mesh frame is placed on the upper end of the installation strip. The mesh frame is detachably screwed onto the installation strip.

5. A battery storage box with a pressure relief and explosion-proof structure according to claim 4, characterized in that: A ring is fixedly fitted on the rotating shaft at the upper end of the barrier net. There are at least two crossbars. The crossbars are fixed at equal angular intervals on the ring with the central axis of the rotating shaft as the center. The crossbars are horizontally set. There are at least two cutting blades on each crossbar, and the cutting blades are spaced apart. The cutting blades are perpendicular to the crossbar.

6. A battery storage box with a pressure relief and explosion-proof structure according to claim 1, characterized in that: The top of the cutting blade is a semi-circular blade.

7. A battery storage box with a pressure relief and explosion-proof structure according to any one of claims 1-6, characterized in that: A first water baffle is detachably fixed to the outer wall of the forced discharge pipe. The first water baffle includes two side plates and a top plate. The two side plates are fixedly installed at intervals below the top plate. The first water baffle is located at the upper end of the second outlet. The bottom of the side plates is lower than the bottom of the second outlet. The chain is located within the enclosed space of the two side plates and the top plate.

8. A battery storage box with a pressure relief and explosion-proof structure according to claim 7, characterized in that: The top of the box is also fixed with a support rod, and a guide frame is fixed on the top of the support rod. The guide frame is hollow and open at both ends, and the chain slides through the guide frame.

9. A battery storage box with a pressure relief and explosion-proof structure according to claim 8, characterized in that: A support frame is fixed to the ground outside the box, and a motor box is fixed to the top of the support frame. The motor is fixed in the motor box, and a first outlet is opened on the side wall of the motor box. The chain enters and exits the motor box through the first outlet.

10. A battery storage box with a pressure relief and explosion-proof structure according to claim 9, characterized in that: A second water baffle is detachably fixed to the outer wall of the motor box. The second water baffle includes two side plates and a top plate. The two side plates are fixedly installed at intervals below the top plate. The second water baffle is located at the upper end of the first outlet. The bottom of the side plates is lower than the bottom of the first outlet. The chain is located within the enclosed space of the two side plates and the top plate.

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