Self-ignition-resistant electric vehicle with fire extinguishing structure

Abstract

The application relates to a self-ignition-preventing electric vehicle with a fire extinguishing structure and relates to the technical field of electric vehicles. The electric vehicle body comprises a driver seat and a trunk, the bottom of the driver seat is provided with a containing box, a battery box is installed in the containing box, the battery box is provided with a storage battery, a supporting assembly for supporting the storage battery is arranged in the battery box, and a fire extinguishing assembly for extinguishing fire is arranged between the trunk and the supporting assembly. The application has the effect that the storage battery can be quickly extinguished after catching fire.

Description

TECHNICAL FIELD

[0001] The application relates to the field of electric vehicles, in particular to a self-ignition-preventing electric vehicle with a fire extinguishing structure. BACKGROUND

[0002] With the rapid development of new energy vehicles, especially electric vehicles, in order to increase the endurance of electric vehicles, under the technical conditions of the existing battery energy density, the electric vehicle manufacturers generally increase the volume of the battery of the electric vehicle to improve the ability of the battery to store electric energy, thereby increasing the endurance of the electric vehicle after one charge. Electric vehicles are generally divided into alternating current electric vehicles and direct current electric vehicles. Through the controller, motor and other components, electric energy is converted into mechanical energy movement to control the current size to change the speed of the vehicle.

[0003] In the related art, a self-ignition-preventing electric vehicle with a battery-mounted fire extinguishing structure is disclosed in Chinese Patent No. CN216908964U, which includes an electric vehicle body, a housing mounted at the rear shell of the electric vehicle body, a fire extinguisher built-in the housing, the fire extinguisher being detachably connected to an elastic clamp, the fire extinguisher being fixed by the elastic clamp, the bottom end of the elastic clamp being fixedly connected to an extension rod, the extension rod being fixedly connected to the bottom of the housing, a supporting spring being sleeved on the outer side of the extension rod, in use, the pressing block is pressed downward, the movable rod moves downward, the spring is compressed, the clamping groove of the clamping block and the limiting block is separated, the fixed block is rotated, the movable rod and the pressing block are separated from the limiting block, the shell cover can be opened, the fire extinguisher can be taken out, and the electric vehicle body on fire can be extinguished. The fire extinguisher is installed on the elastic clamp, the extension rod and the supporting spring, and when the electric vehicle body is running, the effect of shock absorption is achieved.

[0004] In the implementation of the application, the inventors have found that at least the following problems exist in the art: After the electric vehicle body produces a significant fire source, the driver needs to get off the vehicle and move to the housing to take out the fire extinguisher in the housing for extinguishing the fire. This process will take a certain period of time, which not only easily causes the electric vehicle body to be burned more seriously, but also easily causes the fire source to become larger and the fire extinguisher to be unable to extinguish, and thus needs to be improved. SUMMARY

[0005] In order to improve the problems that the electric vehicle body is easily burned more seriously and the fire source is easily enlarged to cause the fire extinguisher to be unable to extinguish, the application provides a self-ignition-preventing electric vehicle with a fire extinguishing structure.

[0006] The self-ignition-preventing electric vehicle with a fire extinguishing structure provided by the application adopts the following technical scheme:

[0007] The application discloses a self-ignition-preventing electric vehicle with a fire extinguishing structure, which comprises an electric vehicle body, wherein the electric vehicle body comprises a driver seat and a trunk, the bottom of the driver seat is provided with a containing box, a battery box is arranged in the containing box, the battery box is provided with a storage battery, a supporting assembly for supporting the storage battery is arranged in the battery box, and a fire extinguishing assembly for extinguishing fire is arranged between the trunk and the supporting assembly.

[0008] By adopting the above technical scheme, once the storage battery suddenly catches fire, the supporting assembly will no longer support the storage battery, and at this moment, the fire extinguishing assembly will automatically and quickly extinguish the fire of the storage battery, so that the fire source cannot be continuously enlarged and extinguished due to untimely fire extinguishing, and the electric vehicle body cannot be burned more seriously.

[0009] Optionally, the supporting assembly comprises a pair of supporting plates and a plurality of connecting ropes, the supporting plates are rotationally connected with the inner wall of the battery box, the plurality of connecting ropes are connected between the two supporting plates, and the storage battery is placed on the two supporting plates.

[0010] By adopting the above technical scheme, once the storage battery suddenly catches fire, the fire source can instantaneously burn the connecting ropes, at this moment, the two supporting plates no longer remain horizontal and are turned downward; the supporting plates will quickly drive the fire extinguishing assembly to extinguish the fire of the storage battery in the process of being turned downward.

[0011] Optionally, the fire extinguishing assembly comprises a steel cylinder, a fire extinguishing pipe, a ball valve and a first pulling rope, the steel cylinder is fixed in the trunk, one end of the fire extinguishing pipe is connected with the steel cylinder and the other end penetrates into the battery box, the ball valve is arranged at the end of the fire extinguishing pipe in the battery box, one end of the first pulling rope is fixed with the supporting plate close to the trunk and the other end is fixed with the rotating rod of the ball valve, and a fireproof layer is arranged on the first pulling rope.

[0012] By adopting the above technical scheme, when the supporting plate is turned downward, the supporting plate will pull the first pulling rope, at this moment, the first pulling rope will pull the rotating rod of the ball valve, so as to open the fire extinguishing pipe, and the carbon dioxide in the steel cylinder is sprayed to the storage battery from the fire extinguishing pipe, so that the effect of quickly extinguishing the fire is achieved.

[0013] Optionally, an supporting groove is formed in one end of the supporting plate away from the inner wall of the battery box, a rubber pad is fixedly arranged in the supporting groove, and the storage battery is placed in the supporting groove and abuts against the rubber pad.

[0014] By adopting the above technical scheme, in the process of driving the electric vehicle body, the supporting groove can limit the storage battery, so as to prevent the storage battery from shaking on the supporting plate and causing the disconnection of the wire.

[0015] Optionally, a wetting assembly is arranged between the battery box and the support plate not connected with the first pull rope, the wetting assembly comprising a cutting part and a wetting part, both of which are connected between the inner wall of the battery box and the support plate not connected with the first pull rope.

[0016] By adopting the above technical scheme, when the support plate is turned down, the cutting part will quickly cut off the wire connected between the electric vehicle body and the storage battery; at the same time, the storage battery will fall to the wetting part to be wetted to extinguish the fire source, thereby further improving the effect of extinguishing the storage battery.

[0017] Optionally, the wetting part comprises a plastic film, a waterproof and breathable film and a needle, the plastic film is fixed in the battery box and forms a water storage cavity with the battery box, the waterproof and breathable film is fixed in the battery box, and the needle is fixedly connected with the bottom wall of the end of the support plate away from the inner wall of the battery box.

[0018] By adopting the above technical scheme, when the support plate is turned down, the needle will contact and scratch the waterproof and breathable film and the plastic film in turn, and at this time the storage battery will fall to the water storage cavity and contact with water by its own weight, thereby extinguishing the fire source on the storage battery.

[0019] Optionally, the cutting part comprises a fixed rod, a cutting rod, a cutting spring, a cutting knife and a second pull rope, the fixed rod and the cutting rod are fixed with the inner wall of the battery box and the cutting rod is used for bearing the wire, a fixed hole is formed in the fixed rod, the cutting knife is slidably connected in the fixed hole, the cutting spring is connected between the cutting knife and the inner wall of the fixed hole, one end of the second pull rope is fixed with the support plate not connected with the first pull rope and the other end is fixed with the cutting knife, and a fireproof layer is also arranged on the second pull rope.

[0020] By adopting the above technical scheme, when the support plate is turned down, the support belt will pull the second pull rope, and the second pull rope will pull the cutting knife to approach the wire on the cutting rod, at this time the cutting rod plays a bearing role; until the cutting knife cuts off the wire, so as to separate the storage battery from the electric vehicle body, thereby making the storage battery fall into the water storage cavity more conveniently.

[0021] Optionally, the battery box comprises a box body and a cover body, the cover body is arranged on the top of the box body through a connecting assembly, a ventilation hole is formed through the box body, and a waterproof and breathable film is also fixedly arranged in the ventilation hole.

[0022] The connecting assembly comprises a driving part and a connecting part, the connecting part is connected between the cover body and the box body, and the driving part is arranged on the cover body and connected with the connecting part.

[0023] By adopting the technical scheme, the ventilation hole can ventilate the inside of the box to reduce the temperature inside the box, so that the storage battery is less likely to have a safety hazard due to excessively high temperature; and the connecting assembly can more conveniently detach or mount the cover body from or on the box.

[0024] Optionally, the driving part comprises a driving rod and a transmission belt, an inside of the cover body is provided with a placing cavity, one end of the driving rod is rotationally connected with an inner wall of the placing cavity, the other end penetrates through an inner top wall of the placing cavity, and the driving rod and the connecting part are transmission-connected through the transmission belt.

[0025] By adopting the technical scheme, when connecting the cover body and the box, the driving part is forwardly rotated to drive the connecting part to connect with the box, so as to complete the connection of the cover body and the box; when detaching the cover body, the driving part is reversely rotated, so that the mounting or detaching of the cover body and the box is more convenient, and the efficiency of mounting or detaching is improved.

[0026] Optionally, the connecting part comprises a screw rod and a sealing strip, the box is provided with a sealing groove and a threaded hole, the sealing strip is inserted into the sealing groove in an interference fit, one end of the screw rod is threadedly connected into the threaded hole, the other end is rotationally connected with the cover body and penetrates into the placing cavity, and the screw rod and the driving rod are transmission-connected through the transmission belt.

[0027] By adopting the technical scheme, when connecting the cover body and the box, the driving part is forwardly rotated to drive the connecting part to connect with the box, so as to complete the connection of the cover body and the box; when detaching the cover body, the driving part is reversely rotated, so that the mounting or detaching of the cover body and the box is more convenient, and the efficiency of mounting or detaching is improved.

[0028] In summary, the present application has at least one of the following beneficial effects:

[0029] 1. Once the storage battery suddenly catches fire, the supporting assembly will immediately stop supporting the storage battery, and at this time the fire extinguishing assembly will automatically and quickly extinguish the fire of the storage battery, so that the fire source is not likely to increase continuously and cannot be extinguished due to untimely fire extinguishing, and the electric vehicle body is not likely to be burned more seriously.

[0030] 2. When the supporting plate is turned down, the supporting plate will pull the first pull rope, at this time the first pull rope will pull the rotating rod of the ball valve to open the fire extinguishing pipe, so that the carbon dioxide in the steel cylinder is sprayed to the storage battery through the fire extinguishing pipe to achieve the effect of rapid fire extinguishing.

[0031] 3. When connecting the cover body and the box, the rotating rod is forwardly rotated, and through the transmission belt, the rotating rod drives the connecting part to connect with the box, so as to complete the connection of the cover body and the box; when detaching the cover body, the driving rod is reversely rotated. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a structural schematic view of an embodiment of the present application;

[0033] Figure 2 is a structural schematic view of an embodiment of the present application for embodying a fire extinguishing assembly;

[0034] Figure 3 is Figure 2 is an enlarged view of A in FIG. 4;

[0035] Figure 4 is Figure 2 is an enlarged view of B in FIG. 4.

[0036] In the figure: 1, electric vehicle body; 11, driver seat; 12, trunk; 13, containing box; 2, battery; 21, battery body; 22, protective shell; 23, temperature sensor; 24, smoke sensor; 25, alarm; 3, support assembly; 31, support plate; 311, support groove; 312, rubber pad; 32, connecting rope; 4, fire extinguishing assembly; 41, steel cylinder; 42, fire extinguishing pipe; 43, ball valve; 44, first pull rope; 441, fireproof layer; 5, wet part; 51, plastic film; 52, waterproof and breathable film; 53, thorn needle; 6, cutting part; 61, fixed rod; 611, fixed hole; 62, cutting rod; 63, cutting spring; 64, cutting knife; 65, second pull rope; 7, driving part; 71, driving rod; 72, transmission belt; 8, connecting part; 81, screw rod; 82, sealing strip; 9, battery box; 91, cover body; 911, placing cavity; 92, box body; 921, ventilation hole; 922, threaded hole; 9234, sealing groove; 10, water storage cavity. DETAILED DESCRIPTION

[0037] The following will be described in detail in combination with the accompanying drawings. Figures 1-4 The present application will be further described in detail.

[0038] The embodiment of the present application discloses a self-ignition-proof electric vehicle with a fire extinguishing structure. Referring to Figure 1 A self-ignition-proof electric vehicle with a fire extinguishing structure comprises an electric vehicle body 1, the electric vehicle body 1 comprises a driver seat 11 and a trunk 12, the bottom of the driver seat 11 is provided with a containing box 13, and the containing box 13 has a storage function.

[0039] Referring to Figure 1 and Figure 2The top of the accommodating box 13 is open, and the accommodating box 13 is opened when the driver seat 11 is turned up. A battery box 9 is fixedly arranged in the accommodating box 13, and the battery box 9 is provided with a storage battery 2 for operating the electric vehicle body 1. The storage battery 2 comprises a storage battery body 21 and a protective shell 22, the storage battery body 21 is fixed in the protective shell 22, the protective shell 22 is provided with a temperature sensor 23 and a smoke sensor 24, the electric vehicle body 1 is provided with an alarm 25, and the temperature sensor 23, the smoke sensor 24 and the alarm 25 are signal connected with a controller of the electric vehicle body 1, the controller of the electric vehicle body 1 is provided with a predetermined temperature value and a smoke value, if the temperature value or the smoke value in the protective shell 22 detected by the temperature sensor 23 and the smoke sensor 24 exceeds the predetermined value; at this time, the storage battery 2 is not easy to explode immediately, but there is a safety hazard, and the alarm 25 will issue an alarm, thereby warning the driver to overhaul, so as to prevent subsequent spontaneous explosion.

[0040] With reference to Figure 2 and Figure 3 , and the battery box 9 comprises a box body 92 and a cover body 91, the cover body 91 is arranged on the top of the box body 92 through a connecting assembly, the connecting assembly can more conveniently dismount or mount the cover body 91 from or on the box body 92. A ventilation hole 921 is arranged through the side wall of the box body 92, the ventilation hole 921 can ventilate the inside of the box body 92, so as to reduce the temperature inside the box body 92, thereby making the storage battery 2 not easy to have a safety hazard due to high temperature. A waterproof and breathable film 52 is fixedly arranged in the ventilation hole 921, the waterproof and breathable film 52 can prevent external water from entering the box body 92 through the ventilation hole 921 and damaging the storage battery 2.

[0041] With reference to Figure 3 , the connecting assembly comprises a driving part 7 and a connecting part 8, the connecting part 8 is connected between the cover body 91 and the box body 92, the driving part 7 is arranged on the cover body 91 and connected with the connecting part 8, when the cover body 91 is connected with the box body 92, the driving part 7 is rotated in a forward direction, the driving part 7 drives the connecting part 8 to be connected with the box body 92, thereby completing the connection of the cover body 91 and the box body 92; when the cover body 91 is dismounted, the driving part 7 is rotated in a reverse direction, thereby making the mounting or dismounting of the cover body 91 and the box body 92 more convenient, so as to improve the mounting or dismounting efficiency.

[0042] With reference to Figure 3The driving part 7 comprises a driving rod 71 and a transmission belt 72, and the inside of the cover body 91 is provided with a square placing cavity 911. One end of the driving rod 71 is rotationally connected to the center of the inner bottom wall of the placing cavity 911, and the other end penetrates the inner top wall of the placing cavity 911. The driving rod 71 and the connecting part 8 are in transmission through the transmission belt 72. When the cover body 91 is connected with the box body 92, the rotating rod is rotated in the positive direction, and the rotating rod drives the connecting part 8 to be connected with the box body 92 through the transmission belt 72, so that the connection of the cover body 91 and the box body 92 is completed; when the cover body 91 is disassembled, the driving rod 71 is reversely rotated.

[0043] With reference to Figure 3 The connecting part 8 comprises a screw rod 81 and a sealing strip 82. The top of the box body 92 is provided with a sealing groove 9234, and the opposite two side top walls of the box body 92 are provided with threaded holes 922. The sealing strip 82 is inserted into the sealing groove 9234 in an interference fit. The sealing strip 82 can not only improve the sealing between the cover body 91 and the box body 92 to prevent external water from entering the box body 92 from the ventilation hole 921, but also improve the stability of the connection between the cover body 91 and the box body 92. One end of the screw rod 81 is threadedly connected to the threaded hole 922, and the other end is rotationally connected to the cover body 91 and penetrates into the placing cavity 911. The transmission belt 72 is in transmission between one end of the screw rod 81 located in the placing cavity 911 and one end of the driving rod 71 located in the placing cavity 911.

[0044] When the cover body 91 is connected with the box body 92, the rotating rod is rotated in the positive direction, and the rotating rod drives the screw rod 81 to rotate through the transmission belt 72. At this time, the screw rod 81 is continuously screwed into the threaded hole 922 to be connected with the box body 92, so that the connection of the cover body 91 and the box body 92 is completed; when the cover body 91 is disassembled, the driving rod 71 is reversely rotated.

[0045] With reference to Figure 2 and Figure 4 The box body 92 is provided with a supporting assembly 3. The storage battery 2 is arranged on the supporting assembly 3. The trunk 12 and the supporting assembly 3 are provided with a fire extinguishing assembly 4. Once the storage battery 2 suddenly catches fire, the supporting assembly 3 will no longer support the storage battery 2, and at this time, the fire extinguishing assembly 4 will automatically and quickly extinguish the fire of the storage battery 2, so that the fire source is not easily continuously increased to be extinguished, and the electric vehicle body 1 is not easily burned more seriously.

[0046] With reference to Figure 4The support assembly 3 comprises a pair of support plates 31 and a plurality of connecting ropes 32. The two support plates 31 are oppositely arranged and rotationally connected with the inner side wall of the box 92, and the battery 2 is arranged on the two support plates 31. The connecting ropes 32 are fixedly connected between the two support plates 31 and are in a taut state. In the embodiment of the application, the two support plates 31 are kept horizontal by the plurality of connecting ropes 32, and the battery 2 can be supported. In the embodiment of the application, the connecting ropes 32 are hemp ropes, which can be instantaneously burned and broken when encountering fire. Once the battery 2 suddenly catches fire, the fire source can instantaneously burn and break the connecting ropes 32. At this time, the two support plates 31 are no longer kept horizontal and are turned downward. The support plates 31 will quickly drive the fire extinguishing assembly 4 to extinguish the battery 2 in the process of turning downward.

[0047] In addition, the support plate 31 is provided with a support groove 311 away from the top wall of the end rotationally connected with the box 92. The support groove 311 is in an “L” shape and has a shallow depth, so that the battery 2 can be smoothly dropped to the bottom of the box 92 and is not easily stuck. The battery 2 is placed in the support groove 311. During the driving of the electric vehicle body 1, the support groove 311 can limit the battery 2 to prevent the battery 2 from shaking in the horizontal direction on the support plate 31. The inner wall of the support groove 311 is fixedly provided with a rubber pad 312. The battery 2 abuts against the rubber pad 312. The rubber pad 312 can protect the battery 2 to prevent the edge wall of the support groove 311 from scratching and damaging the protective shell 22 when the battery 2 falls.

[0048] With reference to Figure 2 and Figure 3 The fire extinguishing assembly 4 comprises a steel cylinder 41, a fire extinguishing pipe 42, a ball valve 43 and a first pull rope 44. The steel cylinder 41 is used for storing carbon dioxide and is fixed in the trunk 12. One end of the fire extinguishing pipe 42 is in communication with the steel cylinder 41, and the other end penetrates into the box 92. The end of the fire extinguishing pipe 42 in the box 92 is inclined. The end of the fire extinguishing pipe 42 away from the trunk 12 is inclined downward, so as to be aligned with the battery 2 and better extinguish the battery 2. The opening of the end of the fire extinguishing pipe 42 in the box 92 is in a trumpet shape, so as to increase the area of the battery 2 sprayed and improve the fire extinguishing effect.

[0049] With reference to Figure 3, the ball valve 43 is arranged at one end of the fire extinguishing pipe 42 located in the box 92, one end of the first pull rope 44 is fixed to the bottom wall of the support plate 31 near one end of the trunk 12, the other end is fixed to the rotating rod of the ball valve 43, and the first pull rope 44 is provided with a fireproof layer 441, the fireproof layer 441 is solvent type fireproof paint, and the fireproof paint is made of phenolic resin, and the fireproof layer 441 can prevent the first pull rope 44 from being burnt off in a short time. When the support plate 31 is turned down, the support plate 31 will pull the first pull rope 44, at this time the first pull rope 44 will pull the rotating rod of the ball valve 43, so as to open the fire extinguishing pipe 42, so that the carbon dioxide in the cylinder 41 will be sprayed to the battery 2 through the fire extinguishing pipe 42, so as to achieve the effect of rapid fire extinguishing.

[0050] With reference to Figure 4 , the battery box 9 and the support plate 31 not connected with the first pull rope 44 are provided with a wetting assembly, the wetting assembly comprises a cutting part 6 and a wetting part 5, the cutting part 6 and the wetting part 5 are connected between the inner wall of the battery box 9 and the support plate 31 not connected with the first pull rope 44, when the support plate 31 is turned down, the cutting part 6 will quickly cut off the wire connected between the electric vehicle body 1 and the battery 2; at the same time, the battery 2 will fall to the wetting part 5 and be wetted, so as to extinguish the fire source, thereby further improving the effect of extinguishing the fire of the battery 2.

[0051] With reference to Figure 4 , the wetting part 5 comprises a plastic film 51, a waterproof breathable film 52 and a needle 53, the plastic film 51 is fixed in the box 92 and forms a water storage cavity 10 between the bottom of the box 92, the water storage cavity 10 is filled with water and the plastic film 51 can block the water in the water storage cavity 10. In order to prevent the water in the water storage cavity 10 from contacting the battery 2 and causing damage to the battery 2. The waterproof breathable film 52 is fixed in the box 92 and located directly above the plastic film 51, the waterproof breathable film 52 can prevent the plastic film 51 from being damaged and unable to block the water in the water storage cavity 10.

[0052] The needle 53 is fixedly connected to the bottom wall of the support plate 31 away from the rotating connection between the support plate 31 and the box 92, when the support plate 31 is turned down, the needle 53 will contact the waterproof breathable film 52 and the plastic film 51 in turn and scratch the waterproof breathable film 52 and the plastic film 51, at this time the battery 2 will fall to the water storage cavity 10 and contact the water by its own weight, thereby extinguishing the fire source on the battery 2, thereby further improving the effect of extinguishing the fire of the battery 2.

[0053] With reference to Figure 4The cutting part 6 comprises a fixed rod 61, a cutting rod 62, a cutting spring 63, a cutting knife 64 and a second pull rope 65. The fixed rod 61 and the cutting rod 62 are fixedly connected with the inner side wall of the box body 92, and the cutting plate is located directly below the fixed rod 61. The top wall of the cutting plate is in contact with the wire. The bottom wall of the fixed rod 61 is provided with a fixed hole 611, the cutting knife 64 is slidingly connected in the fixed hole 611 and can slide in the vertical direction, and the cutting knife 64 is not easy to slide out of the fixed hole 611. One end of the cutting spring 63 is fixedly connected with the top wall of the cutting knife 64, and the other end is fixedly connected with the hole bottom of the fixed hole 611.

[0054] One end of the second pull rope 65 is fixedly connected with the top wall of the support plate 31 which is not connected with the first pull rope 44, and the other end penetrates through the cutting rod 62 and is fixedly connected with the cutting knife 64. The second pull rope 65 is also provided with a fireproof layer 441, so as to prevent the second pull rope 65 from being burnt off instantaneously when the battery 2 catches fire. When the support plate 31 is turned down, the support belt will pull the second pull rope 65, and the second pull rope 65 will pull the cutting knife 64 to be close to the wire on the cutting rod 62. At this time, the cutting rod 62 plays a role of bearing. Until the cutting knife 64 cuts off the wire, so as to separate the battery 2 from the electric vehicle body 1, thereby facilitating the battery 2 to fall into the water storage cavity 10.

[0055] The implementation principle of the self-ignition-preventing electric vehicle with a fire extinguishing structure in the embodiment of the application is that when the support plate 31 is turned down, the support plate 31 will pull the first pull rope 44, and at this time, the first pull rope 44 will pull the rotating rod of the ball valve 43, so as to open the fire extinguishing pipe 42, and the carbon dioxide in the steel cylinder 41 will be sprayed to the battery 2 through the fire extinguishing pipe 42, so as to achieve the effect of rapid fire extinguishing.

[0056] The above are the preferred embodiments of the application, and do not limit the protection scope of the application. Therefore, equivalent changes made on the basis of the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A self-inflammation-preventing electric vehicle with a self-extinguishing structure, comprising an electric vehicle body (1), wherein the electric vehicle body (1) comprises a driver seat (11) and a trunk (12), a containing box (13) is arranged at the bottom of the driver seat (11), a battery box (9) is installed in the containing box (13), and the battery box (9) is provided with a storage battery (2), characterized in that: The battery box (9) is provided with a support assembly (3) for supporting the storage battery (2), and a fire extinguishing assembly (4) for extinguishing fire is arranged between the trunk (12) and the support assembly (3); The support assembly (3) comprises a pair of support plates (31) and a plurality of connecting ropes (32), the support plates (31) are rotatably connected with the inner wall of the battery box (9), and the connecting ropes (32) are connected between the two support plates (31), and the storage battery (2) is placed on the two support plates (31); The fire extinguishing assembly (4) comprises a steel cylinder (41), a fire extinguishing pipe (42), a ball valve (43) and a first pull rope (44), the steel cylinder (41) is fixed in the trunk (12), one end of the fire extinguishing pipe (42) is connected with the steel cylinder (41), the other end penetrates into the battery box (9), the ball valve (43) is arranged at one end of the fire extinguishing pipe (42) in the battery box (9), one end of the first pull rope (44) is fixed with the support plate (31) close to the trunk (12), the other end is fixed with the rotating rod of the ball valve (43), and a fireproof layer (441) is arranged on the first pull rope (44); A wetting assembly is arranged between the battery box (9) and the end of the support plate (31) not connected with the first pull rope (44), the wetting assembly comprises a cutting part (6) and a wetting part (5), and the cutting part (6) and the wetting part (5) are connected between the inner wall of the battery box (9) and the end of the support plate (31) not connected with the first pull rope (44); The wetting part (5) comprises a plastic film (51), a waterproof and breathable film (52) and a needle (53), the plastic film (51) is fixed in the battery box (9) and forms a water storage cavity (10) with the battery box (9), the waterproof and breathable film (52) is fixed in the battery box (9), and the needle (53) is fixedly connected with the bottom wall of the end of the support plate (31) away from the inner wall of the battery box (9); The cutting part (6) comprises a fixed rod (61), a cutting rod (62), a cutting spring (63), a cutting knife (64) and a second pull rope (65), the fixed rod (61) and the cutting rod (62) are fixed with the inner wall of the battery box (9), the cutting rod (62) is used for receiving a wire, a fixed hole (611) is formed in the fixed rod (61), the cutting knife (64) is slidably connected in the fixed hole (611), the cutting spring (63) is connected between the cutting knife (64) and the inner wall of the fixed hole (611), one end of the second pull rope (65) is fixed with the end of the support plate (31) not connected with the first pull rope (44), the other end penetrates through the cutting rod (62) and is fixed with the cutting knife (64), and a fireproof layer (441) is also arranged on the second pull rope (65).

2. The self-ignition resistant electric vehicle with self-contained fire suppression according to claim 1, wherein: The support plate (31) is provided with a support groove (311) at one end away from the inner wall of the battery box (9), a rubber pad (312) is fixedly arranged in the support groove (311), and the storage battery (2) is placed in the support groove (311) and abuts against the rubber pad (312).

3. The self-ignition resistant electric vehicle with self-contained fire suppression according to claim 1, wherein: The battery box (9) comprises a box body (92) and a cover body (91), the cover body (91) is arranged on the top of the box body (92) through a connecting assembly, a ventilation hole (921) is formed through the box body (92), and a waterproof and breathable film (52) is also fixedly arranged in the ventilation hole (921). The connecting assembly comprises a driving part (7) and a connecting part (8), the connecting part (8) is connected between the cover body (91) and the box body (92), and the driving part (7) is arranged on the cover body (91) and connected with the connecting part (8).

4. The self-ignition resistant electric vehicle with self-contained fire suppression according to claim 3, wherein: The driving part (7) comprises a driving rod (71) and a transmission belt (72), the inside of the cover body (91) is provided with a placing cavity (911), one end of the driving rod (71) is rotationally connected with the inner wall of the placing cavity (911), the other end penetrates the inner top wall of the placing cavity (911), and the driving rod (71) is driven by the transmission belt (72) between the connecting part (8).

5. The self-ignition resistant electric vehicle with self-contained fire suppression according to claim 4, wherein: The connecting part (8) comprises a screw rod (81) and a sealing strip (82), the box body (92) is provided with a sealing groove (9234) and a threaded hole (922), the sealing strip (82) is inserted into the sealing groove (9234) in an interference fit, one end of the screw rod (81) is threadedly connected into the threaded hole (922), the other end is rotationally connected with the cover body (91) and penetrates into the placing cavity (911), and the screw rod (81) is driven by the transmission belt (72) between the driving rod (71).

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