A new energy vehicle anti-reburning fire fighting device

Abstract

The application belongs to the technical field of automobile fire-fighting equipment, and discloses a new energy automobile anti-reignition fire-fighting device, which comprises a surrounding component, the inner and outer sides of the surrounding component are respectively provided with a heavy component, and a plurality of pulling components are arranged, a splicing component is arranged at the section of one end of the surrounding component, an inflation component is arranged on the side surface, two water injection components are arranged on the top of the heavy component, and an adjusting component for adjusting the heavy component is further provided. The adjusting component with the arc-shaped spring reset structure can complete the integrated operation of clamping, laying and rolling of the heavy belt along the inclined rope, and it is not necessary to press the magic tape at a close distance; the arc-shaped spring continuously provides the rebound force when the circular shaft rolls, and the reciprocating rolling makes the heavy belt and the surrounding cloth magic tape closely adhere to each other, the bottom of the surrounding component is compacted to form an anti-seepage layer, and the water storage leakage problem is reduced; the foldable inflation surrounding component with the section opening is adopted, and the inner and outer double-layer splicing sealing structures are matched, so that the convenient transfer during idle time and the rapid erection during use are realized.

Description

Technical Field

[0001] This invention belongs to the field of automotive fire-fighting equipment technology, specifically a fire-fighting device for preventing reignition in new energy vehicles. Background Technology

[0002] With the rapid growth in the number of new energy vehicles, vehicle fires caused by thermal runaway of power batteries are gradually increasing. Lithium battery fires are characterized by rapid combustion, high core temperature, and a tendency to reignite. Conventional dry powder extinguishing methods are insufficient to completely stop the chain reaction within the battery cell. Currently, accident sites often employ a method of enclosing the battery with barriers and then immersing it in water to continuously cool and isolate it from oxygen, thereby suppressing the risk of reignition.

[0003] Existing fire-fighting enclosure devices for new energy vehicles are mostly closed ring structures, which cannot be quickly inserted under the chassis from the side of the vehicle. They need to be installed after the vehicle is lifted, resulting in extremely low efficiency. Although some open enclosures can quickly enclose the vehicle, their cross-sections have poor sealing performance, and the enclosed water is prone to leaking from the joints, making it difficult to maintain an effective soaking water level and greatly reducing the oxygen-blocking and cooling effect.

[0004] To improve the sealing of the bottom of the enclosure and its resistance to water flow impact, a counterweight structure is usually installed on the inside of the enclosure to compact the bottom edge. However, existing counterweight strips mostly rely on manual laying and pressing. In the complex environment of a fire scene, there is a risk of reignition and toxic fumes. The longer the operators work at close range, the higher the safety hazard. At the same time, manual laying makes it difficult to ensure that the counterweight strip is fully and firmly bonded to the adhesive surface, which can easily lead to local lifting and gaps, resulting in water leakage and failing to create a stable and long-term cooling and soaking environment. Summary of the Invention

[0005] The purpose of this invention is to provide a fire-fighting device for preventing reignition in new energy vehicles, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fire-fighting device for preventing reignition of fires in new energy vehicles, comprising a enclosure assembly, a counterweight assembly installed on the inner side of the enclosure assembly, a plurality of towing assemblies arranged in a ring around the outer edge of the enclosure assembly, a splicing assembly provided at one end of the enclosure assembly, an inflation assembly provided on the side of the enclosure assembly, two water injection assemblies mounted on the top of the counterweight assembly, and the fire-fighting device further equipped with an adjustment assembly for adjusting the counterweight assembly; the adjustment assembly comprises a rectangular block, with a U-shaped rod extending through the front and rear sides of the rectangular block, two symmetrical circular shafts hinged to the outer edge of the U-shaped rod, each of the two circular shafts having an annular groove on its outer edge, symmetrical grippers hinged to the left and right sides of the rectangular block, a circular rod extending through the middle of the rectangular block, a first spring sleeved on the outer circumference of the circular rod, and a connecting rod fixedly mounted at the bottom of the circular rod.

[0007] Preferably, the upper and lower ends of the first spring abut against the bottom surface of the rectangular block and the top surface of the connecting rod, respectively, and the left and right sides of the connecting rod are movably hinged to the middle of the gripper.

[0008] Preferably, two arc-shaped springs are symmetrically arranged on the top of the rectangular block, and a hollow tube is movably hinged between the two arc-shaped springs. An operating handle is provided at the end of the hollow tube away from the rectangular block, and a steel wire rope is connected to the bottom of the operating handle. The steel wire rope passes through the hollow tube and its tail end is fixedly connected to the top of the round rod. When the operating handle is held and the steel wire rope is pulled, the round rod can be driven to move upward and the clamps on both sides can be driven to retract inward through the connecting rod. When the operating handle is released, the clamps can be reset and opened under the elastic force of the first spring.

[0009] Preferably, the enclosure assembly includes an inflatable enclosure that is foldable in its normal state and has a U-shaped structure with a cross-section on its short side. Multiple air columns are provided on the side of the inflatable enclosure, which form vertical support after inflation. An inflation valve is provided at one outer corner of the inflatable enclosure, and several first metal rings are provided on the top of the inflatable enclosure.

[0010] Preferably, the counterweight assembly includes a barrier fabric, which is disposed on the inner side of an inflatable barrier. The barrier fabric is also U-shaped with a cross-section on its short side. Multiple Velcro straps are arranged in a ring around the top of the side of the barrier fabric parallel to the ground. A counterweight band with the same ring arrangement is attached to the top of the multiple Velcro straps. Several second metal rings are arranged in a ring around the periphery of the multiple Velcro straps. Each second metal ring has a diagonal pull rope connected to its outer edge. The other end of the diagonal pull rope is fixed to a first metal ring. A folded fabric is provided at the cross-section of the barrier fabric. The folded fabric is detached and stacked by another Velcro strap.

[0011] Preferably, the towing assembly includes two symmetrical third metal rings, both of which are disposed on the outer edge of the inflatable enclosure, and a towing strap is threaded through both third metal rings.

[0012] Preferably, the splicing assembly includes three fourth metal rings, which are equidistantly arranged on the outer edge of the cross-section of the inflatable enclosure. Three T-shaped hooks are symmetrically arranged on the other side of the cross-section of the inflatable enclosure. The inner side of the inflatable enclosure is closed by overlapping fabric, and the outer side is closed by hooking the fourth metal rings with the T-shaped hooks.

[0013] Preferably, the inflation assembly includes an inflation tank, the top of which is connected to a connecting pipe, and the end of the connecting pipe can be quickly connected to an inflation valve to inflate the inflation enclosure.

[0014] Preferably, the water injection component includes a water inlet pipe, which is installed on top of the inflatable enclosure. The outlet end of the water inlet pipe is connected to a T-connector, which is placed on top of the enclosure fabric when in use. Each outlet of the T-connector is equipped with a valve that can adjust the water volume.

[0015] The beneficial effects of this invention are as follows: 1. This invention utilizes an adjustment component with an arc-shaped spring reset structure, enabling integrated operation of clamping, laying, and rolling of the ballast belt along the inclined rope, eliminating the need for close-range bending and pressing of the Velcro. As the cylindrical shaft rolls, the arc-shaped spring continuously provides rebound force, and the reciprocating rolling ensures a tight fit between the ballast belt and the Velcro of the fencing fabric, compacting the bottom of the fencing to form a seepage-proof layer and reducing water leakage. Simultaneously, a single person can remotely complete the laying of the entire ballast belt loop, shortening the working time of personnel in high-temperature, toxic smoke fire scenes and reducing the safety risks for firefighters on-site.

[0016] 2. This invention employs a foldable inflatable barrier with a cross-sectional opening, combined with an inner and outer double-layer splicing and sealing structure, which can quickly enclose a burning vehicle directly from the side without lifting the vehicle body; after inflation, the air column quickly forms and supports the barrier, and the diagonal rope simultaneously tightens the inner barrier fabric to form a complete water storage cavity, while the outer T-shaped hook and the inner overlapping fabric achieve double waterproof sealing of the cross-section; when not in use, the whole structure is folded to reduce its volume, and with the towing component, it can be towed and transported by a single person, greatly shortening the time required to set up the barrier at the accident scene. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the counterweight component structure of the present invention; Figure 5 This is a schematic diagram of the overlay structure of the present invention; Figure 6 This is a schematic diagram of the adjustment component structure of the present invention; Figure 7 This is a schematic diagram of the gripper structure of the present invention.

[0018] In the diagram: 1. Fence assembly; 2. Counterweight assembly; 3. Towing assembly; 4. Splicing assembly; 5. Inflatable assembly; 6. Water injection assembly; 7. Adjustment assembly; 11. Inflatable fence; 12. Air column; 13. Inflation valve; 14. First metal ring; 21. Fence fabric; 22. Velcro; 23. Counterweight belt; 24. Second metal ring; 25. Diagonal rope; 26. Overlapping fabric; 31. Third metal ring; 32. Towing belt; 41. Fourth metal ring; 42. T-hook; 51. Air tank; 52. Connecting pipe; 61. Water inlet pipe; 62. T-pipe; 63. Valve; 71. Rectangular block; 72. U-shaped rod; 73. Round shaft; 74. Annular groove; 75. Clamp; 76. Round rod; 77. First spring; 78. Connecting rod; 79. Arc spring; 710. Hollow tube; 711. Operating handle. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 7 As shown, this embodiment of the invention provides a fire-fighting device for preventing reignition of fires in new energy vehicles, including a enclosure component 1. A counterweight component 2 is installed on the inner side of the enclosure component 1. Several towing components 3 are arranged in a ring around the outer edge of the enclosure component 1. A splicing component 4 is provided at one end of the enclosure component 1. An inflation component 5 is provided on the side of the enclosure component 1. Two water injection components 6 are mounted on the top of the counterweight component 2. The fire-fighting device is also equipped with an adjustment component 7 for adjusting the counterweight component 2. The adjustment component 7 includes a rectangular block 71. A U-shaped rod 72 is provided through the front and rear sides of the rectangular block 71. Two symmetrical round shafts 73 are movably hinged to the outer edge of the U-shaped rod 72. An annular groove 74 is opened on the outer edge of each of the two round shafts 73. Symmetrical grippers 75 are movably hinged to the left and right sides of the rectangular block 71. A round rod 76 is installed through the middle of the rectangular block 71. A first spring 77 is sleeved on the outer periphery of the round rod 76. A connecting rod 78 is fixedly provided at the bottom of the round rod 76.

[0021] The upper and lower ends of the first spring 77 abut against the bottom surface of the rectangular block 71 and the top surface of the connecting rod 78, respectively. The left and right sides of the connecting rod 78 are movably hinged to the middle of the gripper 75. Two arc-shaped springs 79 are symmetrically arranged on the top of the rectangular block 71. A hollow tube 710 is movably hinged between the two arc-shaped springs 79. An operating handle 711 is provided at the end of the hollow tube 710 away from the rectangular block 71. A steel wire rope is connected to the bottom of the operating handle 711. The steel wire rope passes through the hollow tube 710 and its tail end is fixedly connected to the top of the round rod 76. When the operating handle 711 is held and the steel wire rope is pulled, the round rod 76 can be driven to move upward and drive the two side grippers 75 to retract inward through the connecting rod 78. When the operating handle 711 is released, the grippers 75 can be reset and opened under the elastic force of the first spring 77. During operation, holding the operating handle 711 pulls the round rod 76 upward via the wire rope, compressing the first spring 77. Simultaneously, the connecting rod 78 drives the two side grippers 75 to retract inward, clamping the two sides of the weight belt 23. Then, the annular groove 74 of the round shaft 73 is hooked onto the inclined rope 25, so that the entire adjustment component 7 moves with the inclined rope 25 as the guide. The hollow tube 710 is pushed so that the round shaft 73 rolls downward along the inclined rope 25, driving the clamped weight belt 23 downward synchronously. The weight belt 23 is precisely laid down to the corresponding position of the Velcro 22 at the top of the enclosure cloth 21. After that, the operating handle 711 is released, the first spring 77 rebounds and pushes the round rod 76 downward. The connecting rod 78 drives the grippers 75 to open and release the weight belt 23. Then, the weight of the round shaft 73 is used to roll the top surface of the counterweight belt 23, so that the counterweight belt 23 is firmly attached to the Velcro 22. During the rolling process, the round shaft 73 can rotate slightly around the rectangular block 71, and simultaneously squeeze the arc springs 79 on both sides to deform. When the external force pushing forward is released, the arc springs 79 release elastic potential energy, pulling the hollow tube 710 and the round shaft 73 to automatically rotate back to reset. By repeating the above clamping, laying and rolling operations, the installation of the entire circle of counterweight belt 23 can be completed quickly, so as to achieve compaction and sealing of the bottom of the enclosure and prevent water leakage.

[0022] Furthermore, the enclosure assembly 1 includes an inflatable enclosure 11, which is foldable in its normal state and has a U-shaped structure with a cross-section on its short side. Multiple air columns 12 are provided on the side of the inflatable enclosure 11, which form vertical support after inflation. An inflation valve 13 is provided on one outer corner of the inflatable enclosure 11, and several first metal rings 14 are provided on the top of the inflatable enclosure 11.

[0023] During operation, the inflatable enclosure 11 can be folded and stored for easy transport by fire trucks. During on-site handling, gas is quickly introduced into the inflation assembly 5 through the inflation valve 13, and each air column 12 expands and stands up synchronously, providing stable vertical support for the entire enclosure and forming a complete enclosed space. The first metal ring 14 arranged in a ring at the top is used to fix the diagonal rope 25, realizing the pulling and positioning of the inner enclosure cloth 21 and the inflatable enclosure 11, ensuring that the inner and outer structures are formed synchronously.

[0024] Furthermore, the counterweight assembly 2 includes a barrier fabric 21, which is disposed inside the inflatable barrier 11. The barrier fabric 21 is also shaped like a square with a cross-section on its short side. Multiple Velcro straps 22 are arranged in a ring around the top of the side of the barrier fabric 21 parallel to the ground. A counterweight strap 23 with the same ring arrangement is attached to the top of the multiple Velcro straps 22. Several second metal rings 24 are arranged in a ring around the periphery of the multiple Velcro straps 22. Each second metal ring 24 is connected to a diagonal pull rope 25 on its outer edge. The other end of the diagonal pull rope 25 is fixed to the first metal ring 14. A folded fabric 26 is provided at the cross-section of the barrier fabric 21. The folded fabric 26 is detached and stacked through another Velcro strap 22.

[0025] During operation, after the inflatable enclosure 11 is inflated and formed, the diagonal rope 25 pulls the enclosure cloth 21 evenly and lays it flat at the bottom of the enclosed area through the first metal ring 14 and the second metal ring 24 to form a water-storage and seepage-proof base; the overlapping cloth 26 at the cross-section can be quickly glued and sealed with Velcro 22 to prevent water leakage after water is injected; when the counterweight belt 23 is laid, the Velcro 22 provides the glue and fixing points for the counterweight belt 23.

[0026] Furthermore, the towing assembly 3 includes two symmetrical third metal rings 31, both of which are located on the outer edge of the inflatable enclosure 11, and a towing strap 32 is threaded through both third metal rings 31.

[0027] During operation, firefighters can use the towing strap 32 to drag the entire device and rely on the third metal ring 31 to evenly distribute the pulling force, so as to smoothly move the folded or inflated enclosure device to the location of the new energy vehicle fire. This allows for quick on-site deployment and positioning without the need for multiple people to lift it.

[0028] Furthermore, the splicing component 4 includes three fourth metal rings 41, which are equidistantly arranged on the outer edge of the cross section of the inflatable enclosure 11. Three T-shaped hooks 42 are symmetrically arranged on the other side of the cross section of the inflatable enclosure 11. The inner side of the inflatable enclosure 11 is closed by the overlapping fabric 26, and the outer side is closed by hooking the fourth metal rings 41 with the T-shaped hooks 42.

[0029] During operation, after covering the vehicle body with the opening of the enclosure, the gaps of the inner enclosure cloth 21 are first sealed by the inner layer of cloth 26 on the inner side of the section. Then, the outer T-shaped hooks 42 are fastened into the fourth metal rings 41 arranged at equal intervals, and the opening of the inflatable enclosure 11 is locked from the outside. The double sealing structure inside and outside prevents water from overflowing from the side section of the enclosure after water is injected, ensuring that the internal water storage space is completely sealed.

[0030] Furthermore, the inflation assembly 5 includes an inflation tank 51, the top of which is connected to a connecting pipe 52, the end of which can be quickly connected to an inflation valve 13 to inflate the inflation enclosure 11.

[0031] During operation, the connecting pipe 52 is connected to the inflation valve 13, and air is injected into the inflatable enclosure 11 through the inflation tank 51. The air column 12 expands synchronously to form a vertical support, so that the inflatable enclosure 11 is quickly erected to form an outer protective structure.

[0032] Furthermore, the water injection component 6 includes a water inlet pipe 61, which is installed on top of the inflatable enclosure 11. The outlet end of the water inlet pipe 61 is connected to a three-way pipe 62, which is placed on top of the enclosure fabric 21 when in use. Each outlet of the three-way pipe 62 is equipped with a valve 63 that can adjust the water volume.

[0033] During operation, the inlet pipe 61 is connected to the fire water source, the tee pipe 62 is placed on top of the enclosure cloth 21, and the valve 63 is opened to inject water into the enclosed space. The flow rate of each outlet is adjusted by the valve 63 so that the water level gradually submerges the vehicle battery area, continuously water-cooling and oxygen-isolating the high-temperature battery, blocking the thermal runaway chain reaction of the battery cell, and achieving a long-term anti-reignition effect.

[0034] Working principle: When using this equipment, first, push the folded inflatable enclosure 11 from the side of the vehicle to the corresponding position on the chassis, so that the opening section faces the operator; close the section by splicing component 4, and close the inner folded fabric 26 with Velcro 22, and hook the T-hook 42 onto the fourth metal ring 41 on the outer side, so that the inflatable enclosure 11 and the inner enclosure fabric 21 form a complete U-shaped enclosure structure.

[0035] Then, the inflation assembly 5 is activated, the connecting pipe 52 is connected to the inflation valve 13, and air is injected into the inflatable enclosure 11 through the inflation tank 51. The air column 12 expands synchronously to form a vertical support, so that the inflatable enclosure 11 is quickly erected to form an outer protective structure. The inner enclosure cloth 21 is simultaneously unfolded under the pull of the inclined rope 25 to enclose the internal water storage space.

[0036] First, hold the operating handle 711, pull the round rod 76 upward through the wire rope to compress the first spring 77, and simultaneously drive the two side grippers 75 to retract inward through the connecting rod 78 to clamp the two sides of the weight belt 23. Then, the round shaft 73 is hooked onto the inclined rope 25 through the annular groove 74, so that the entire adjustment component 7 is guided by the inclined rope 25. Push the hollow tube 710 to make the round shaft 73 roll downward along the inclined rope 25, and drive the clamped weight belt 23 downward synchronously. The weight belt 23 is accurately laid down to the corresponding position of the Velcro 22 on the top of the enclosure cloth 21. Then, release the operating handle 711, the first spring 77 rebounds and pushes the round rod 76 downward, and drives the grippers 75 to open and release the weight belt 23 through the connecting rod 78. Then, the weight of the round shaft 73 is used to roll the top surface of the counterweight belt 23, so that the counterweight belt 23 is firmly attached to the Velcro 22. During the rolling process, the round shaft 73 can rotate slightly around the rectangular block 71, and simultaneously squeeze the arc springs 79 on both sides to deform. When the external force pushing forward is released, the arc springs 79 release elastic potential energy, pulling the hollow tube 710 and the round shaft 73 to automatically rotate back to reset. By repeating the above clamping, laying and rolling operations, the installation of the entire circle of counterweight belt 23 can be completed quickly, so as to achieve compaction and sealing of the bottom of the enclosure and prevent water leakage.

[0037] After the counterweight is installed, the inlet pipe 61 of the water injection component 6 is connected to the fire water source, the tee pipe 62 is placed on top of the enclosure cloth 21, and the valve 63 is opened to inject water into the enclosed space; the flow rate of each outlet is adjusted by the valve 63 so that the water level gradually submerges the vehicle battery area, continuously water-cooling and oxygen-isolating the high-temperature battery, blocking the thermal runaway chain reaction of the battery cell, and achieving a long-term anti-reignition effect.

[0038] After the treatment is completed, first drain the internal water, disassemble the ballast belt 23 and the splicing structure, and after venting and folding, it can be stored and transported.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A fire prevention and firefighting device for new energy vehicles, comprising a fencing component (1), characterized in that: The inner side of the enclosure component (1) is equipped with a counterweight component (2), and a number of towing components (3) are arranged in a ring around the outer edge of the enclosure component (1). A splicing component (4) is provided at one end of the enclosure component (1), and an inflation component (5) is provided on the side of the enclosure component (1). Two water injection components (6) are erected on the top of the counterweight component (2). The fire-fighting device is also equipped with an adjustment component (7) for adjusting the counterweight component (2). The adjustment component (7) includes a rectangular block (71), with a U-shaped rod (72) extending through the front and rear sides of the rectangular block (71). Two symmetrical round shafts (73) are movably hinged to the outer edge of the U-shaped rod (72), and an annular groove (74) is provided on the outer edge of each of the two round shafts (73). Symmetrical grippers (75) are movably hinged to the left and right sides of the rectangular block (71). A round rod (76) is installed through the middle of the rectangular block (71), and a first spring (77) is sleeved on the outer periphery of the round rod (76). A connecting rod (78) is fixedly provided at the bottom of the round rod (76).

2. The fire-fighting device for preventing reignition of fire in new energy vehicles according to claim 1, characterized in that: The upper and lower ends of the first spring (77) abut against the bottom surface of the rectangular block (71) and the top surface of the connecting rod (78), respectively. The left and right sides of the connecting rod (78) are movably hinged to the middle of the gripper (75).

3. The fire-fighting device for preventing reignition of fire in new energy vehicles according to claim 2, characterized in that: Two arc-shaped springs (79) are symmetrically arranged on the top of the rectangular block (71). A hollow tube (710) is movably hinged between the two arc-shaped springs (79). An operating handle (711) is provided at the end of the hollow tube (710) away from the rectangular block (71). A steel wire rope is connected to the bottom of the operating handle (711). The steel wire rope passes through the hollow tube (710) and its tail end is fixedly connected to the top of the round rod (76). When the operating handle (711) is held and the steel wire rope is pulled, the round rod (76) can be driven to move upward and the two grippers (75) on both sides can be driven to retract inward through the connecting rod (78). When the operating handle (711) is released, the grippers (75) can be reset and opened under the elastic force of the first spring (77).

4. The fire-fighting device for preventing reignition of fire in new energy vehicles according to claim 1, characterized in that: The enclosure assembly (1) includes an inflatable enclosure (11), which is foldable in its normal state and has a U-shaped structure with a cross section on its short side. Multiple air columns (12) are provided on the side of the inflatable enclosure (11), which form vertical support after inflation. An inflation valve (13) is provided on one outer corner of the inflatable enclosure (11), and several first metal rings (14) are provided on the top of the inflatable enclosure (11).

5. A fire-fighting device for preventing reignition of fire in new energy vehicles according to claim 4, characterized in that: The counterweight assembly (2) includes a barrier cloth (21), which is located inside the inflatable barrier (11). The barrier cloth (21) is also shaped like a square with a cross section on the short side. Multiple Velcro straps (22) are arranged in a ring on the top of the side of the barrier cloth (21) parallel to the ground. A counterweight strap (23) is attached to the top of the multiple Velcro straps (22) in the same ring. Several second metal rings (24) are arranged in a ring around the periphery of the multiple Velcro straps (22). Each second metal ring (24) is connected to a diagonal rope (25) on its outer edge. The other end of the diagonal rope (25) is fixed to the first metal ring (14). A folded cloth (26) is provided at the cross section of the barrier cloth (21). The folded cloth (26) is detached and stacked by another Velcro strap (22).

6. A fire-fighting device for preventing reignition of fire in new energy vehicles according to claim 4, characterized in that: The towing assembly (3) includes two symmetrical third metal rings (31), both of which are located on the outer edge of the inflatable enclosure (11), and a towing strap (32) is threaded through both third metal rings (31).

7. A fire-fighting device for preventing reignition of fire in new energy vehicles according to claim 5, characterized in that: The splicing component (4) includes three fourth metal rings (41). The three fourth metal rings (41) are equidistantly arranged on the outer edge of the cross section of the inflatable enclosure (11). Three T-shaped hooks (42) are symmetrically arranged on the other side of the cross section of the inflatable enclosure (11). The inner side of the inflatable enclosure (11) is closed by overlapping fabric (26), and the outer side is closed by hooking the fourth metal rings (41) with the T-shaped hooks (42).

8. A fire-fighting device for preventing reignition of fire in new energy vehicles according to claim 4, characterized in that: The inflation assembly (5) includes an inflation tank (51), the top of which is connected to a connecting pipe (52), the end of which can be quickly connected to an inflation valve (13) to inflate the inflation enclosure (11).

9. A fire-fighting device for preventing reignition of fire in new energy vehicles according to claim 5, characterized in that: The water injection component (6) includes a water inlet pipe (61), which is installed on top of the inflatable enclosure (11). The water outlet of the water inlet pipe (61) is connected to a three-way pipe (62), which is placed on top of the enclosure cloth (21) when in use. Each outlet of the three-way pipe (62) is equipped with a valve (63) that can adjust the water volume.

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