Electric vehicle fire spread prevention system

Abstract

The present invention relates to an electric vehicle fire propagation prevention system, and more particularly, to an electric vehicle fire propagation prevention system which, when a fire occurs in a charged or parked electric vehicle, expands a suffocation fire-extinguishing cloth covering the outside of the electric vehicle by means of a plurality of support rods, thereby preventing the fire propagation of the electric vehicle. In order to provide an electric vehicle in which a fire occurs in a space isolated from the outside, the present invention is characterized by comprising: a pair of base frames symmetrically provided at positions spaced apart from each other; fixed brackets which are respectively arranged at the front end part and the rear end part of the pair of base frames; a plurality of support rods provided between the pair of base frames, both ends of the support rods in the longitudinal direction being rotatably provided to the fixed bracket; and a suffocation fire-extinguishing cloth coupled to the plurality of support bars and folded or unfolded with each other to prevent flame propagation, in which one or more of the plurality of support bars are provided with a water spray nozzle that sprays fire-extinguishing water supplied from the fire hydrant into a space closed by the suffocation fire-extinguishing cloth.

Description

A fire spread prevention system for electric vehicles Technical Field

[0001] This invention relates to a fire spread prevention system for electric vehicles, and more specifically, to a fire spread prevention system for electric vehicles that, when a fire occurs in a charging or parked electric vehicle, deploys a suffocating fire extinguishing cloth covering the outside of the electric vehicle via multiple support rods, placing the electric vehicle in a space isolated from the outside, thereby minimizing the spread of heat and smoke caused by the fire. Background Technology

[0002] The most critical component in an electric vehicle is the battery, which contains multiple battery modules that are assembled into a battery pack and installed on the bottom side of the vehicle so that it can be used for a long time after a single charge.

[0003] The battery pack can catch fire due to various reasons, including external impacts, which can occur not only during driving but also during charging.

[0004] In particular, as mentioned above, batteries used in electric vehicles are made up of high-capacity cells with a high density, and are manufactured and installed in a sealed shape to minimize damage or problems caused by external physical impacts. Therefore, in the event of a fire, there is a problem that fire extinguishing agents have difficulty penetrating and thus making it difficult to extinguish the fire.

[0005] Therefore, when an electric vehicle catches fire, only fire-fighting water can be used to extinguish the external flames. In particular, when the separator in the battery, which is used to separate the positive and negative electrode substrate materials, loses its original function and the substrate materials come into contact with each other, a chain chemical reaction occurs, resulting in heat generation and flammable gases. Furthermore, as this chain chemical reaction proceeds, toxic gases, including carbon monoxide, and flammable gases are rapidly and massively produced along with the high temperature, which can ignite the battery due to a spark and cause an explosion.

[0006] In particular, if a battery cell explodes due to a physical impact, the explosion will cause physical impact on adjacent battery cells, thereby continuously generating thermal runaway and causing adjacent battery cells to explode one after another, which makes firefighting very difficult.

[0007] In addition, batteries used in electric vehicles use large-capacity batteries so that they can be used for a long time after a single charge. In the case of a medium-sized electric vehicle, they store the equivalent of two days' worth of electricity for an average household. If such a large-capacity battery catches fire, there are the following problems: the temperature may rise to an uncontrollable level, and the fire may spread to the facilities and equipment in the area where the fire occurred, thus causing greater damage.

[0008] Furthermore, as mentioned earlier, fires in electric vehicles typically occur at the battery, which is enclosed. Due to the release of toxic and flammable gases and the high temperatures, it is extremely difficult to spray extinguishing agents or water directly onto the fire. The only option is to spray water onto the external gases or flames, but this method can only prevent the fire from spreading and cannot extinguish it. Statistics show that it takes approximately 28,000 gallons of water to completely extinguish a fire in an electric vehicle, which is equivalent to a fire department's water consumption for a month. Therefore, there is a significant social cost involved.

[0009] In addition, as mentioned above, the batteries of electric vehicles are mainly installed on the bottom side of the vehicle. Therefore, there is a risk of electric shock and explosion caused by water sprayed during a fire. As a result, it is difficult to completely extinguish the fire using ordinary water spraying methods.

[0010] Existing technical documents

[0011] Patent documents

[0012] Patent Document 1: Korean Patent Registration No. 10-2431474 (Registered August 8, 2022)

[0013] Patent Document 2: Korean Patent Registration No. 10-2504119 (Registered on February 22, 2023)

[0014] Patent Document 3: Korean Patent Registration No. 10-2470858 (Registered on November 22, 2022) Summary of the Invention

[0015] The problem that the invention aims to solve

[0016] The present invention is proposed to solve the above-mentioned problems, and its purpose is to provide an electric vehicle fire spread prevention system. When a fire occurs in an electric vehicle that is charging or parked, an asphyxiating fire extinguishing cloth is deployed to cover the outside of the electric vehicle, placing the electric vehicle on fire in a space isolated from the outside, thereby minimizing the spread of toxic gases, flammable gases and heat to the outside.

[0017] In addition, the present invention aims to provide an electric vehicle fire spread prevention system, which is configured to be folded and placed on one side of a parking lot or charging facility and can be unfolded when needed, thereby minimizing the inconvenience to daily life and improving space utilization.

[0018] In addition, the present invention aims to provide a fire spread prevention system for electric vehicles, which can deploy a suffocation extinguishing cloth at a relatively far distance even after a fire has occurred, thereby placing the electric vehicle on fire in a space isolated from the outside.

[0019] In addition, the present invention aims to provide an electric vehicle fire spread prevention system, which is configured to be mobile and can take rapid isolation measures in the event of a fire in an adjacent area, thereby minimizing the spread of toxic gases, combustible gases and heat generated by the fire.

[0020] Methods for solving problems

[0021] To achieve the above objectives, the present invention is characterized by comprising: a pair of base frames symmetrically arranged at mutually spaced positions; a fixed bracket respectively disposed at the front and rear ends of the pair of base frames; a plurality of support rods disposed between the pair of base frames, with both ends rotatably disposed on the fixed bracket in the longitudinal direction; and a suffocating fire extinguishing cloth combined with the plurality of support rods and folded or unfolded to prevent the spread of flames, wherein one or more of the plurality of support rods are provided with water spray nozzles that spray extinguishing water supplied from fire hydrants into the space enclosed by the suffocating fire extinguishing cloth.

[0022] In addition, the present invention is characterized in that the support rod is also equipped with a sensing sensor that can detect harmful substances, chemicals or fire exposed to the outside when a fire occurs in a vehicle that is charging or parked.

[0023] In addition, the present invention is characterized in that a plurality of casters capable of moving or stopping are provided on the pair of base frames.

[0024] Furthermore, the present invention is characterized in that an operating ring is provided on the asphyxiation extinguishing cloth, which is used to close the asphyxiation extinguishing cloth when a fire occurs in the open state. The electric vehicle fire spread prevention system also includes an emergency closing member, which includes: a long rod extending along the length direction; and a hook disposed at one end of the long rod in the length direction, so as to hook the operating ring and close the asphyxiation extinguishing cloth.

[0025] Furthermore, the present invention is characterized by further including a receiving body comprising: a receiving space for receiving the base frame and the plurality of support rods configured to be close to each other; a cover for opening or closing one end of the receiving space; and an elastic body disposed within the receiving space, one end of which contacts any one of the plurality of support rods and the other end of which contacts the inner circumferential surface of the receiving space, thereby providing an elastic force to push the plurality of support rods out of the receiving space.

[0026] Invention Effects

[0027] The present invention, as described above, has the following effects: it can place an electric vehicle that has caught fire in a space isolated from the outside, thereby minimizing the spread of toxic gases, combustible gases and heat caused by the fire to the outside and reducing the losses caused by the fire.

[0028] In addition, the present invention includes a plurality of support rods configured to be foldable or unfoldable and an asphyxiating fire extinguishing cloth connected to the support rods. The asphyxiating fire extinguishing cloth is normally configured in a folded state, thereby improving space utilization and being able to be quickly unfolded in the event of a fire, thereby improving ease of use.

[0029] In addition, the present invention is designed to be mobile, thereby also being able to respond to fires occurring in adjacent areas. After a fire occurs, it can not only reduce losses caused by high-temperature heat, but also deploy a suffocation fire extinguishing cloth.

[0030] In addition, the present invention has the following advantages: one or more of the multiple support rods are provided with a water spray nozzle capable of spraying fire extinguishing water, thereby improving the fire extinguishing efficiency and the efficiency of preventing the spread of fire.

[0031] In addition, the present invention has the following advantages: when not unfolded, it can minimize contamination caused by foreign objects and moisture, thereby reducing the cost of maintenance. Attached Figure Description

[0032] Figure 1 is a schematic diagram illustrating the electric vehicle fire spread prevention system according to the present invention.

[0033] Figure 2 is a schematic diagram showing the base frame that constitutes the present invention.

[0034] Figure 3 is a schematic diagram showing the support rod that constitutes the present invention.

[0035] Figure 4 is a schematic diagram showing the unfolded state of the support rod constituting the present invention.

[0036] Figure 5 is a schematic diagram showing the accommodating body that constitutes the present invention.

[0037] Figure 6 is a schematic diagram showing the suffocation extinguishing cloth constituting the present invention.

[0038] Figure 7 is a schematic diagram showing a support rod according to another embodiment of the present invention.

[0039] Figures 8a and 8b are schematic diagrams illustrating yet another embodiment of the present invention.

[0040] Explanation of reference numerals in the attached figures

[0041] 1: Electric vehicle fire spread prevention system;

[0042] 10: Base frame;

[0043] 11: Casters; 12: Mating holes;

[0044] 13: Reinforcement plate; 14: Moving frame;

[0045] 15: Main frame; 16: Auxiliary frame;

[0046] 17: Drive wheel; 18: Moving track;

[0047] 20: Fixed bracket;

[0048] 21: Front bracket; 22: Rear bracket;

[0049] 30: Support rod;

[0050] 31: Column; 32: Supporting part;

[0051] 33: Elastic spring; 34: Hinge;

[0052] 40: Suffocation extinguishing cloth;

[0053] 41: Handle; 42: Operating ring;

[0054] 43: Emergency sealing components;

[0055] 50: Water spray nozzle;

[0056] 51: Water storage tank;

[0057] 60: Sensor;

[0058] 70: Contains the main body;

[0059] 71: storage space; 72: cover;

[0060] 73: Elastomer. Detailed Implementation

[0061] Hereinafter, a preferred embodiment of the electric vehicle fire spread prevention system according to the present invention will be described in detail with reference to the accompanying drawings.

[0062] First, the electric vehicle fire spread prevention system 1 according to the present invention includes: a pair of base frames 10, symmetrically arranged at mutually spaced positions; fixed brackets 20, respectively arranged at the front and rear ends of the pair of base frames 10; a plurality of support rods 30, arranged between the pair of base frames 10, and rotatably arranged at both ends in the longitudinal direction on the fixed brackets 20; and suffocation extinguishing cloth 40, combined with the plurality of support rods 30, and folded or unfolded to prevent the spread of flames.

[0063] The pair of base frames 10 are symmetrically arranged at mutually spaced positions and are formed into a tubular shape extending along the length direction, allowing the ends of the support rods 30, described later, to be rotatably disposed.

[0064] For this purpose, a pair of base frames 10 are each formed as rectangular tubes extending along the length direction, and are provided with a plurality of engagement holes 12 for engaging with the fixing bracket 20 described later.

[0065] Here, in addition to being formed as the aforementioned rectangular tube, the base frame 10 is made of a metal material with a predetermined strength to support the load pressure transmitted from above, and may also have a base plate (not shown) to increase the contact area with the bottom of the installation or the ground, thereby providing upright stability.

[0066] Furthermore, the thickness and length of the base frame 10 itself can be varied according to the configuration spacing and number of the plurality of support rods 30 described later. Therefore, it is undoubtedly not limited to the embodiments shown in the accompanying drawings.

[0067] Additionally, as shown in Figure 2(a), the base frame 10 includes: a main frame 15 extending along the length direction; and a pair of auxiliary frames 16 disposed at opposite ends of the main frame 15 along the length direction, for the fixing bracket 20 described later to be respectively provided.

[0068] At this time, the auxiliary frame 16 is formed into a shape with an open top. After the fixed bracket 20 is inserted from above and combined, it is fixed into a whole by welding or fixing bolts.

[0069] In addition, the pair of base frames 10 are provided with a plurality of casters 11 that are capable of moving or stopping. The casters 11 move the base frames 10 so that follow-up measures can be taken quickly even if a fire occurs in an adjacent location.

[0070] In addition, by using the casters 11 to move the base frame 10, the convenience of changing the installation location or storing it is improved.

[0071] Here, the caster 11 can be set in a movable frame 14 that is independently constructed from the base frame 10. The movable frame 14 is composed of multiple tubes connected together, so that the base frame 10 and the support rod 30 described later can be placed on its upper surface (refer to (b) in FIG2).

[0072] The fixed bracket 20 is disposed on the base frame 10 for the support rod 30 described later to be rotatably disposed. The fixed bracket 20 is integrally fixed to the connecting hole 12 formed in the base frame 10 by connecting bolts, and multiple hinge holes 23 are formed at intervals between each fixed bracket 20 for the support rod 30 to be rotatably connected.

[0073] The fixed brackets 20 are fixed at both ends of the base frame 10 along the length direction. Depending on the fixed position, the hinge holes 23 can be formed at different positions.

[0074] In more detail, the fixing bracket 20 consists of a front bracket 21 located at the front end of the base frame 10 in the longitudinal direction and a rear bracket 22 located at the rear end in the longitudinal direction. The front bracket 21 is fixed to the front end of the base frame 10 and is made of the same material as the base frame 10. It is combined with the reinforcing plate 13 of the base frame 10, which is fixed together by welding.

[0075] Here, the reinforcing plates 13 are respectively fixed in the opposite directions of a pair of base frames 10. When the vibration and impact generated during the unfolding of the multiple support rods 30 are transmitted to the base frames 10, the plates can disperse and support the vibration and impact.

[0076] The rear end bracket 22 is located at the rear end of the base frame 10 along its length. In order to support the load transmitted during the folding or unfolding of the multiple support rods 30, a pair of the rear end brackets 22 are configured to contact the two sides of the base frame 10 and be fixed by fixing bolts, with the support rods 30 arranged between the pair of the rear end brackets 22.

[0077] Here, the front end and rear end of the base frame 10 along its length are respectively the front end being the direction of vehicle entry and exit, and the rear end being the position where the suffocation extinguishing cloth 40 is folded and stored in a standby state.

[0078] The plurality of support rods 30 are rotatably mounted on the pair of fixed brackets 20 and are combined with the asphyxiation extinguishing cloth 40 described later for folding or unfolding the asphyxiation extinguishing cloth 40.

[0079] For this purpose, the multiple support rods 30 are each formed as tubular bodies extending along the length direction and are formed in the shape of "Π" so that when the suffocation extinguishing cloth 40 is deployed, a predetermined space is formed between the multiple support rods 30 and the ground.

[0080] Furthermore, each support rod 30 has a predetermined strength and load to support the load pressure of the suffocating fire extinguishing cloth 40, while maintaining its position even in the high-temperature air caused by a fire. Each support rod 30 is made of a metal material with a high melting temperature, so that it will not melt even under the high temperature caused by a fire.

[0081] Additionally, as shown in the figure, the support rod 30 is formed by bending a tubular body with a rectangular cross-section to achieve a predetermined strength. However, this is only one embodiment, and the shape of its cross-section can be modified in various ways as long as the shape can maintain its strength.

[0082] The plurality of support rods 30 are respectively rotatably disposed in the hinge holes 23 formed in the front end bracket 21 and the rear end bracket 22.

[0083] In addition, one or more of the plurality of support rods 30 are provided with water spray nozzles 50, which spray fire extinguishing water supplied from the fire hydrant into the space enclosed by the suffocating fire extinguishing cloth 40.

[0084] As an example, the water spray nozzle 50 is configured on a support rod 30 that is positioned across the center of the length direction of the suffocation extinguishing cloth 40 when multiple support rods 30 are deployed to deploy the suffocation extinguishing cloth 40.

[0085] In addition, one end of the support rod 30, which is formed as a hollow tubular body, is connected to the water storage tank 51 for storing fire extinguishing water through a connecting pipe, thereby receiving fire extinguishing water, and the received fire extinguishing water is sprayed downward through the water spray nozzle 50.

[0086] Here, multiple water spray nozzles 50 are arranged along the length of the support rod 30 and are positioned at intervals.

[0087] In addition, any one of the multiple support rods 30 is equipped with a sensing sensor 60, which detects hazardous substances, chemicals or fires exposed to the outside when a fire occurs in a vehicle that is charging or parked.

[0088] The sensing sensor 60 is used to detect a fire when an electric vehicle is parked or charging. Here, the sensing sensor 60 may be one or more of the following: a temperature sensor that senses temperature, a smoke sensor that senses smoke released to the outside when a fire occurs, a carbon dioxide sensor that senses the concentration of carbon dioxide in the air, and a flame sensor that senses whether there is a flame.

[0089] In addition, it may include: an alarm mechanism (not shown in the figure) that displays a signal to the outside via sound or light when a fire is confirmed by receiving a sensing value sensed by the sensing sensor 60; and a control mechanism (not shown) that controls the operation of the alarm mechanism.

[0090] Additionally, the support rod 30 may include: a support column 31 formed in a straight direction, and a pair of support columns 31 arranged spaced apart from each other; and a support portion 32, which is connected to the pair of support columns 31 and is bent in a "Π" shape.

[0091] The support column 31 and the support part 32 are fixed together by bolts. By manufacturing the support column and the support part separately, the convenience of manufacturing, transportation and assembly can be improved.

[0092] In another embodiment, the support column 31 can be configured to adjust its length in the vertical direction, and the support portion 32 can be configured to adjust its length in the horizontal direction, thereby being able to cope with various installation environments and the suffocation extinguishing cloth described later.

[0093] The suffocation extinguishing cloth 40 is made of non-combustible materials such as glass fiber or silicon dioxide, which can isolate oxygen in the air and eliminate the necessary conditions for combustion.

[0094] The heat resistance of this suffocating fire extinguishing cloth 40 is 1000-1400℃, and the thickness is 0.3mm±0.1mm. Users use the suffocating fire extinguishing cloth 40 to cover electric vehicles that have caught fire. In this invention, the suffocating fire extinguishing cloth 40 is combined with multiple support rods 30, so that it can be folded or unfolded by folding or unfolding the support rods 30.

[0095] Here, during the process of folding or unfolding the suffocation extinguishing cloth 40, a handle 41 is provided on the foremost support rod 30 among the multiple support rods 30 that are combined with the suffocation extinguishing cloth 40.

[0096] In addition, there are toxic gases, flammable gases, and high-temperature flames and hot air around the electric vehicle after the fire, so it is difficult to directly hold the handle 41 to deploy the suffocating fire extinguishing cloth.

[0097] Therefore, the asphyxiation extinguishing cloth 40 is provided with an operating ring 42 for closing the asphyxiation extinguishing cloth 40 in the event of a fire when it is in the open state. The electric vehicle fire spread prevention system also includes an emergency closing member 43, which includes: a long rod 431 extending along the length direction; and a hook 432 disposed at one end of the long rod 431 in the length direction, so as to hook the operating ring 42 and close the asphyxiation extinguishing cloth 40.

[0098] The operating ring 42 is located at the upper end of the foremost support rod 30 among the multiple support rods 30.

[0099] The emergency closure component 43 includes: a long rod 431, which is formed into a telescopic shape that can extend along the length direction and has an adjustable length; and a hook 432, which is detachably coupled to one end of the long rod 431 along the length direction and has a bent front end to hook the operating ring 42.

[0100] Furthermore, as described above, the present invention is installed in a parking lot or charging station. When a fire occurs in a parked vehicle or a charging electric vehicle, the suffocating fire extinguishing cloth 40 is moved to the location of the fire, or the suffocating fire extinguishing cloth 40 installed at that location is unfolded to cover the electric vehicle on fire, thereby isolating it from the outside air.

[0101] Furthermore, in parking lots or charging stations, the asphyxiation extinguishing cloth 40 can always be in a partially unfolded standby state. In this case, during the vehicle parking process, the electric vehicle may collide with the support rod 30 supporting the asphyxiation extinguishing cloth 40, causing the support rod 30 to bend or break.

[0102] In addition, the surface of the suffocating fire extinguishing cloth 40, which is exposed to the outside for a long time, will absorb foreign objects and moisture, resulting in the following problems: it becomes unsightly, and furthermore, the absorbed foreign objects and moisture accumulate. These accumulated foreign objects may generate sparks due to flames in the event of a fire, or even produce toxic gases.

[0103] Therefore, when not in use, the suffocation extinguishing cloth 40 should be stored away and unfolded when needed.

[0104] For this purpose, a receiving body 70 is also included, comprising: a receiving space 71 for receiving the base frame 10 and the plurality of support rods 30 configured close to each other; a cover 72 for opening or closing one end of the receiving space 71; and an elastic body 73 disposed within the receiving space 71, one end of which contacts any one of the plurality of support rods 30 and the other end of which contacts the inner circumferential surface of the receiving space 71, thereby providing an elastic force to push the plurality of support rods 30 outward from the receiving space 71.

[0105] Here, the receiving body 70 can be formed in a shape corresponding to the shape of the support rod 30, or, as another example, it can be formed in a shape that only accommodates a portion of the suffocation extinguishing cloth 40.

[0106] The receiving body 70 is formed as a shell shape with a receiving space 71 for receiving multiple support rods 30 arranged close to each other, and has an opening at the top to form an entrance and exit for the support rods 30 and the suffocation fire extinguishing cloth 40 to enter and exit.

[0107] The cover 72 is configured to open or close the entrance / exit of the receiving body 70, and one end is rotatably disposed on the receiving body 70.

[0108] The plurality of elastic bodies 73 are arranged in spaced-apart positions within the receiving space 71 to provide an elastic force that pushes the support rod 30 out of the receiving space 71.

[0109] Furthermore, Figure 7 shows another embodiment of the present invention. In an environment with low ceiling height, the support rod 30's pillar 31 is composed of two or more separate parts. Elastic springs 33 and hinges 34 are arranged at the joints of each part to enable folding and restoration. Thus, when the support rod 30 moves in an environment with low ceiling height and comes into contact with obstacles such as the ceiling, the pillar can move by folding through the elastic springs and hinges. After passing through the obstacle, the pillar returns to its original shape through the restoring force of the elastic springs.

[0110] Here, the elastic spring 33 and the hinge 34 can be arranged on the contact surface of the support column 31 and the support portion 32, so that the support portion 32 can be rotatably arranged.

[0111] This embodiment is mainly applied to low-rise environments with a floor height of less than 2.3m. When a fire occurs in a vehicle parked or charging in a low-rise environment, the asphyxiating fire extinguishing cloth of the present invention, which is in a folded standby state, is unfolded and wrapped around the outside of the vehicle, thereby minimizing the inflow of outside air.

[0112] In this process, the support part 32 may come into contact with the ceiling due to the low floor height, thus hindering the unfolding of the suffocation extinguishing cloth. During the movement, it may be unable to move due to obstacles such as other vehicles or pillars, or it may need to be moved in a flat state, thus increasing the time required for movement. However, the present invention, by using the elastic spring 33 and hinge 34 to make the support 31 or the contact surface between the support 31 and the support part 32 foldable and recoverable, can easily move and unfold the suffocation extinguishing cloth even in low floor height environments.

[0113] Figure 8 shows another embodiment of the present invention, which is set in a parking lot with parallel parking, rather than in a parking lot with forward or reverse parking, and is configured to use suffocating fire extinguishing cloth to wrap the exterior of the vehicle on fire.

[0114] At this time, the base frame 10 is provided with a plurality of drive wheels 17 so as to be able to move in the parallel parking lot, and a moving track 18 is provided on the ground, which is arranged along a path so that the base frame 10 can move along a specified path and allow the drive wheels 17 to move.

[0115] Furthermore, the plurality of support rods 30 are configured to fold forward and unfold backward on the base frame 10 respectively, and the front and rear are connected to each other so that vehicles can pass through when folded.

[0116] That is, as shown in Figure 8, multiple support rods 30 are symmetrically arranged at both ends of the base frame 10 along its length. In the folded state, they allow the vehicle to pass through the front or rear. Then, the base frame 10 is placed at the center of the vehicle's length, and the multiple support rods 30 at both ends are unfolded. This unfolds the suffocation extinguishing cloth 40 connected to the multiple support rods 30, thereby isolating the vehicle on fire from the outside.

[0117] As described above, the present invention has been described through specific elements and other specific matters, limited embodiments and accompanying drawings, but these are provided only to help to understand the present invention more fully. The present invention is not limited to the embodiments described above, and those skilled in the art to which the present invention pertains can make various modifications and variations based on the above description.

[0118] Therefore, the technical concept of the present invention should not be limited to these embodiments, and all technical solutions described below and their equivalent or equivalent modifications are within the scope of the technical concept of the present invention.

Claims

1. A fire spread prevention system for electric vehicles, characterized in that, The electric vehicle fire spread prevention system includes: a pair of base frames (10) symmetrically arranged at spaced-apart positions; fixed brackets (20) respectively arranged at the front and rear ends of the pair of base frames (10); a plurality of support rods (30) arranged between the pair of base frames (10), with both ends rotatably arranged on the fixed brackets (20) in the longitudinal direction; and a suffocating fire extinguishing cloth (40) combined with the plurality of support rods (30), and folded or unfolded to prevent the spread of flames. One or more of the plurality of support rods (30) are provided with water spray nozzles (50) that spray extinguishing water supplied from the fire hydrant into the space enclosed by the asphyxiating fire extinguishing cloth (40). An operating ring (42) is provided on the asphyxiating fire extinguishing cloth (40) to close the asphyxiating fire extinguishing cloth (40) in the event of a fire while it is in the open state. The electric vehicle fire spread prevention system also includes an emergency closure element (43), which comprises: a long rod (431). The support rod (30) extends along its length; and a hook (432) is provided at one end of the long rod (431) along its length to hook the operating ring (42) and close the suffocating fire extinguishing cloth (40). The support rod (30) includes: a support column (31) formed along a straight line, and a pair of the support columns (31) are spaced apart from each other; and a support portion (32) is connected to the pair of the support columns (31) and is bent in a "Π" shape. The support column (31) is composed of two or more parts, and a spring is provided at the joint of each part. The support rod (30) is configured to fold and return to its original shape by means of a spring (33) and a hinge (34). When the support rod (30) moves in an environment with low ceiling height and comes into contact with an obstacle such as the ceiling, the support rod can move by folding through the spring (33) and the hinge (34). After passing the obstacle, the support rod returns to its original shape by the restoring force of the spring (33). The spring (33) and the hinge (34) are arranged on the contact surface between the support rod (31) and the support part (32) so that the support part (32) can be rotatably arranged.

2. The electric vehicle fire spread prevention system according to claim 1, characterized in that, The support rod (30) also includes a sensing sensor (60) that detects harmful substances, chemicals or fire exposed to the outside when a fire occurs in a vehicle that is charging or parked.

3. The electric vehicle fire spread prevention system according to claim 1, characterized in that, The pair of base frames (10) are provided with a plurality of casters (11) that are capable of moving or stopping.

4. The electric vehicle fire spread prevention system according to claim 1, characterized in that, The electric vehicle fire spread prevention system also includes a housing body (70) comprising: a housing space (71) for housing the base frame (10) and the plurality of support rods (30) configured to be close to each other; a cover (72) for opening or closing one end of the housing space (71); and an elastomer (73) disposed within the housing space (71), one end of which contacts any one of the plurality of support rods (30) and the other end of which contacts the inner circumferential surface of the housing space (71), thereby providing an elastic force to push the plurality of support rods (30) out of the housing space (71).

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