KR102680197B1 - Fire protection cover for Fire suppression of Electric vehicle charging station - Google Patents

Abstract

The present invention relates to a flame retardant film for fire suppression at an electric vehicle charging station. More specifically, when a fire occurs at an electric car charging station, the flame retardant film of the blocking fire extinguishing device installed on top of the electric vehicle spreads to block the flame to prevent the spread of the flame, and the inside of the flame retardant film prevents the flame from spreading. The fire extinguishing agent is sprayed to ensure fire extinguishing effect, and the fire extinguishing agent sprayed into the flame retardant membrane is stored inside to provide a water tank function. However, if the level of the stored fire extinguishing agent exceeds a certain height, the excess amount is discharged to the outside by the discharge device. This relates to a flame retardant film for fire suppression at an electric vehicle charging station that can reduce the amount of fire extinguishing agent used by reducing the amount of fire extinguishing agent sprayed into the flame retardant film while being discharged.

Description

Fire protection cover for fire suppression of Electric vehicle charging station}

The present invention relates to a flame retardant film for fire suppression at an electric vehicle charging station. More specifically, when a fire occurs at an electric car charging station, the flame retardant film of the cut-off fire extinguishing device installed on top of the electric vehicle spreads to block the flame to prevent the spread of the flame, and the inside of the flame retardant film prevents the flame from spreading. The fire extinguishing agent is sprayed to ensure fire extinguishing effect, and the fire extinguishing agent sprayed into the flame retardant membrane is stored inside to provide a water tank function. However, if the level of the stored fire extinguishing agent exceeds a certain height, the excess amount is discharged to the outside by the discharge device. This relates to a flame retardant film for fire suppression at an electric vehicle charging station that can reduce the amount of fire extinguishing agent used by reducing the amount of fire extinguishing agent sprayed into the flame retardant film while being discharged.

In general, automobiles used internal combustion engines that use gasoline or diesel fuel, but recently, due to the problem of carbon dioxide emitted from internal combustion engines, the spread of electric vehicles, which are eco-friendly energy vehicles, has been increasing. This trend is leading to a growing trend around the world to phase out internal combustion engine vehicles due to global warming issues. In contrast, the supply of electric vehicles is steadily increasing every year, and their market share is expected to increase further in the future.

The battery, which is the most important element in these electric vehicles, is used by building a single battery pack with multiple battery modules to enable long-term use on a single charge and then installing it on the lower part of the car. The battery pack may catch fire due to various causes, including external shocks, and this may occur even while driving or charging.

In particular, during charging, abnormal operation between the charging device and the battery or abnormalities caused by a damaged battery can cause battery heat to rise rapidly, resulting in a battery combustion reaction, which may result in a fire.

Therefore, in recent years, fire suppression devices have been installed at electric vehicle charging stations to prevent the spread of fire by quickly extinguishing fires in the event of an electric vehicle fire.

Korean Patent No. 10-2431474 (registered on August 8, 2022; hereinafter referred to as ‘Patent Document 1’) proposed a fire suppression tank for an electric vehicle charging station. In Patent Document 1, a storage body in the form of a square border is formed on the floor at a parking location of a charging station, and a multi-wall tube is built into the storage body and expanded upward by air injection to form a water tank to provide fresh water. However, because the top is open, there is a problem with the flame spreading to adjacent areas.

Korean Patent No. 10-2504119 (registered on February 22, 2023; hereinafter referred to as ‘Patent Document 2’) proposes a system and method for detecting fire and preventing its spread when charging an electric vehicle. Patent Document 2 arranges a fire extinguishing liquid spraying unit and a roof membrane on the upper side of an electric vehicle, and in the event of a fire, the blocking membrane is spread from the blocking membrane holding unit installed at the edge of the roof membrane to form an enclosed space to enclose the electric vehicle and spraying of the fire extinguishing liquid occurs. However, because the barrier has a weak adhesion to the floor of the parking area, the sprayed fire extinguishing liquid cannot be contained inside.

Korean Patent No. 10-2470858 (registered on November 22, 2022; hereinafter referred to as 'Patent Document 3') proposed a suffocating fire extinguishing cover having a water spray tank. Patent Document 3 is configured to combine a fire extinguisher covering a vehicle, a fire extinguishing water supply hose, and a sprinkler with a spray hole formed on the bottom of the fire extinguisher, so that fire extinguishing water flows into the inner space of the sprinkler and extinguishes the fire into the vehicle through the spray hole. Although water spraying is provided, there is no function to store fire extinguishing water in the inner space of the spray gun and lock the battery.

Therefore, there is a need for a flame retardant membrane for a fire suppression system that prevents the spread of flame in the event of an electric vehicle fire, collects the sprayed fire extinguishing agent, forms a water tank, and can achieve effective fire suppression while reducing the use of fire extinguishing agent. It has been done.

Korean Patent No. 10-2431474 (registered on August 8, 2022; hereinafter referred to as ‘Patent Document 1’) is a fire suppression tank for an electric vehicle charging station. Korean Patent No. 10-2504119 (registered on February 22, 2023; hereinafter referred to as ‘Patent Document 2’) is a system and method for detecting and preventing fire from spreading when charging an electric vehicle. Korean Patent No. 10-2470858 (registered on November 22, 2022; hereinafter referred to as ‘Patent Document 3’) is a suffocating fire extinguishing cover with a sprinkler tank.

The flame retardant film for the fire suppression system of the electric vehicle charging station of the present invention to solve the problems of the prior art as described above,

In the event of a fire, it spreads quickly to prevent the flame from spreading, and increases adhesion to the floor of the installed charging area to form a water tank to trap the fire extinguishing agent sprayed inside. The purpose is to provide a flame retardant membrane that can reduce the amount of fire extinguishing agent used by controlling the spray amount of the agent.

The flame retardant film for the fire suppression system of the electric vehicle charging station of the present invention to solve the above problems,

In the flame retardant membrane for fire suppression, which is installed on the upper part of the charging area of an electric vehicle charging station and expands by injection of fire extinguishing agent in the event of a fire to cover the electric vehicle and prevent the spread of flame, the dome is formed by laminating and joining flame retardant materials in multi-layers. A main body membrane of the form; A flow path is formed in a portion of the main body membrane to transport the fire extinguishing agent supplied from the chemical tank, and the main body membrane is maintained in a dome shape by the pressure of the fire extinguishing agent and is in close contact with the bottom of the charging area to form an enclosed space in which the car is placed inside. Euro Department; a spray nozzle formed on the inner surface of the sealed space in the flow path portion and spraying the transported fire extinguishing agent into the closed space; It is configured to include; a discharge means for discharging the fire extinguishing agent formed on the main body membrane without the passage portion and soaked in the sealed space to the outside so that it is not stored above a certain height.

Additionally, the discharge means may be a plurality of check valves that are mounted at a height of 20 to 30 cm higher than the battery mounting height of the electric vehicle and limit the storage level of the fire extinguishing agent.

Here, the discharge means is equipped with a detection sensor that detects whether the fire extinguishing agent is discharged, and when discharge of the fire extinguishing agent is detected by the detection sensor, the amount of fire extinguishing agent used can be reduced by adjusting to reduce the discharge of the fire extinguishing agent from the chemical tank.

In addition, the passage portion includes a plurality of radial passages formed in a radial direction from the center that receive the fire extinguishing agent from the chemical tank, spreading the upper part of the main body membrane in a cap shape, and having a spray nozzle formed in the direction of the inner sealed space; a vertical passage with one end communicating with the radiation passage and vertically disposed so that its lower portion extends outward to expand the internal area, and having a spray nozzle formed in the direction of the enclosed space; Among the plurality of vertical passages, the lower ends of adjacent vertical passages are connected to each other and closed into a ring or square shape, and a bottom passage is in close contact with the bottom of the filling area due to the weight of the injected fire extinguishing agent and collects the fire extinguishing agent sprayed therein. It is composed by:

The bottom surface of the floor passage is composed of multiple rows of convex portions formed long along the bottom passage, so that the load of the fire extinguishing agent filled inside the bottom passage is concentrated at the curved point of the convex portion and comes into close contact with the bottom of the filling area, thereby increasing the sealing force of the internal sealed space. can be increased.

The flame retardant film for fire suppression of an electric vehicle charging station of the present invention according to the above solution,

It is installed at the top of the charging area and can quickly unfold in the event of a fire to prevent the spread of flame.

In particular, by ensuring that the bottom of the flame retardant film is in close contact with the charging location, the fire extinguishing agent sprayed inside is desalinated and a water tank function is provided, allowing rapid fire extinguishment by immersing the battery in the fresh water extinguishing agent.

In addition, when a sufficient amount of water is contained within the flame retardant membrane, the excess fire extinguishing agent can be discharged to the outside through the discharge means, and at the same time, environmental pollution can be minimized by reducing the amount of fire extinguishing agent used by reducing the spray amount of the extinguishing agent supplied into the flame retardant membrane. It has become possible to provide eco-friendly flame retardant membranes for fire suppression.

1 is a perspective view showing the operating state of a flame retardant film according to a preferred embodiment of the present invention.
Figures 2a and 2b are vertical cross-sectional views showing the initial injection state and discharge state of fresh water fire extinguishing agent inside the flame retardant membrane according to the present invention.
Figures 3a and 3b are a top and side view of the flame retardant film when it is unfolded.
Figures 3c and 3d are vertical cross-sectional views showing various shapes of the bottom of the flame retardant film according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. Since the present invention can make various changes and take various forms, specific embodiments will be illustrated in the drawings and the present invention will be described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. While describing each drawing, similar reference numerals are used for similar components. In the attached drawings, the dimensions of the structures are enlarged or reduced from the actual size to ensure clarity of the present invention.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, terms such as “comprise,” “comprise,” or “have” are intended to designate the presence of features, numbers, steps, operations, components, or a combination thereof described in the specification, but are intended to indicate the presence of one or more of the features, numbers, steps, operations, components, or combinations thereof. It should be understood that this does not exclude in advance the presence or addition of other features, numbers, steps, operations, components, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms that are commonly used and defined in the dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present application. .

Figure 1 is a perspective view showing the operating state of the flame retardant membrane according to a preferred embodiment of the present invention, and Figures 2a and 2b are vertical cross-sectional views showing the initial injection state and fresh water state of the fire extinguishing agent inside the flame retardant membrane according to the present invention. am.

As referenced, the fire suppression system 10 of the electric vehicle charging station according to the present invention includes a charging device 20 installed on one side of the charging area where the electric vehicle is parked, and installed in the front, rear, and floor of the charging area to enable charging. A camera measuring device (30) that measures the image of a parked electric vehicle, a blocking fire extinguishing device (40) that quickly covers the electric car in the event of a fire in the electric car to prevent the flame from spreading, and sprays a fire extinguishing agent into the interior space, It is configured to include a control device 60 that controls various signals.

The charging device 20 is installed in the form of a wall or stand in the direction opposite to the entrance through which a car enters the charging area, and is equipped with a charging connector to connect to a parked electric car to enable charging. The charging device can use a variety of products on the market, and can also be provided with a built-in camera measurement device and a chemical tank, which will be described later.

The camera measuring device 30 can be installed on the top and rear sides or on both sides of an electric vehicle that is installed or parked in a front charging device, and two or more cameras can be installed to capture images from various angles. Additionally, it can be installed on the floor of a parking area to capture the lower surface of a parked electric vehicle.

This camera measurement device 30 captures and monitors smoke or flames generated from an electric vehicle, or captures heat distribution through a thermal imaging camera and provides the image to a control device described later. In other words, externally confirmed smoke, flames, or damage to the battery pack housing can be checked through a general video camera, and abnormalities in the battery or charging line installed in the electric vehicle can be checked through a thermal imaging camera. .

The blocking fire extinguishing device 40 is arranged by folding a flame retardant film 44 on the upper side of the parked electric vehicle, and during fire extinguishing work, the flame retardant film 44 is spread and covers the electric car 70 to block the spread of the flame inside. Fire extinguishing agents were sprayed to extinguish the fire. In particular, by increasing the adhesion between the flame retardant membrane and the bottom of the charging area, the fire extinguishing agent sprayed inside can be submerged to extinguish the fire using the water tank function.

The blocking fire extinguishing device 40 includes a chemical tank 41 filled with a fire extinguishing agent, as shown in FIG. 2A. The chemical tank 41 may be installed in various forms, such as being installed inside the charging device, installed as a stand on one side of the charging area, or buried. In addition, the fire extinguishing agents filled in the chemical tank are various chemicals used for extinguishing electric vehicles.

The chemical tank is connected to a transfer pipe 42 on one side. The transfer pipe 42 has an inlet connected to the chemical tank 41 to receive the fire extinguishing agent stored in the chemical tank, and the discharge port is disposed at the top of the parked electric vehicle to discharge the fire extinguishing agent. An intermittent valve can be installed at the transfer pipe or chemical tank, or at the connection between the transfer pipe and the chemical tank, so that the fire extinguishing agent stored in the chemical tank can be transported and supplied by the control device.

A flame-retardant housing 43 is installed at the discharge port portion of the transfer pipe. The flame-retardant housing 43 is coupled to a portion adjacent to the discharge port of the transfer pipe 42 and is provided in the form of a box with a space for embedding a flame-retardant film, which will be described later, or in the form of a support to prevent the flame-retardant film from falling arbitrarily. Various means of storing the flame retardant membrane may be provided. Here, when the flame retardant housing 43 is in the shape of a box, an opening and closing hole is formed on the bottom so that the flame retardant film 44 can be discharged by opening and closing. The opening and closing opening may be made of a material that is damaged by the expansion force of the internal flame retardant film, or may be provided as a mechanical structure that is opened and closed by the control device. In addition, the flame retardant housing 43 can be provided in a structure that is detachable from the transfer pipe 42, so that it can be replaced after use.

The flame retardant film 44 is disposed within the flame retardant housing, and when a fire occurs, it is discharged to the outside as shown in FIG. 2A and spreads out in a dome shape to form a space inside, and can block the spread of the electric car flame by covering the electric car in the inner space. . That is, the flame retardant film 44 is folded and stored so that it can be easily unfolded inside the flame retardant housing in normal times, and in case of fire, it is unfolded in a dome shape to accommodate the electric vehicle inside.

The flame retardant film 44 forms a flow path between the dome-shaped main body film 45 formed of a flame retardant material and a flame retardant material layer laminated on a portion of the main body film, and is a flow path portion that transports the fire extinguishing agent supplied from the chemical tank. It consists of (46) and a spray nozzle (464) formed on the inner surface where the flow path part is formed and spraying the transported fire extinguishing agent into a closed space, which is the inner space of the flame retardant film.

It is preferable that the main body film 45 is formed as a flame retardant material layer by stacking and bonding it as a multi-layer rather than as a single layer.

The flow path portion 46 forms a space by partially bonding the inner part of the laminated flame retardant material layer. The flow path formed in the main body membrane is connected as one, so that the fire extinguishing agent can be supplied into the flow path to fill the flow path, and the fire extinguishing agent can be transported through the flow path.

The spray nozzle 464 is a nozzle that sprays the fire extinguishing agent supplied through the flow path, and is formed in plural numbers along the flow path, so that the fire extinguishing agent is sprayed from various directions into the sealed space inside the flame retardant membrane to achieve a rapid fire extinguishing action. can do.

In this way, the flame retardant film 44 is connected to the discharge port of the transfer pipe through a connector, receives fire extinguishing agent from the transfer pipe, and fills the passage portion 46 of the flame retardant membrane. In the process of filling the passage portion, the flame retardant membrane spreads into a dome shape. .

The connector 441 is formed of watertight packing and is closely mounted on the transfer pipe, and a locking means coupled to the transfer pipe or flame retardant housing may be further formed to prevent it from being removed by the discharge pressure of the fire extinguishing agent. The locking means may be provided using various known locking devices, including a form in which a closed fixing ring is formed on the transfer pipe or flame retardant housing, a hook is formed on the connector, and locking is achieved by inserting the hook into the fixing ring. You can.

In addition, the flame retardant film 44 is formed by laminating multiple layers of flame retardant material to form the final film, and the passage part can be formed through a sewing method in addition to the adhesive method, and serves as the framework of the flame retardant film by adjusting the attachment spacing or the bar spacing. The thickness of the flow path portion can be formed to a desired thickness.

Of course, the entire space between the multi-layer flame retardant material layers can be used as a filling space for the fire extinguishing agent without the partial attachment or sewing, but it takes a long time to charge the fire extinguishing agent, so rapid fire suppression cannot be achieved. Therefore, by applying partial attachment or sewing method to reduce the area of the flow path filled with fire extinguishing agent, it is possible to quickly construct a framework and cover the car in a dome shape to seal it.

As shown in FIG. 2B, the present invention may further include a discharge means 47 in a portion of the main body membrane 45 without a flow path portion.

The discharge means 47 is a device that discharges the fire extinguishing agent soaked inside the flame retardant membrane to the outside, and typically has a check valve. In addition, various methods may be applied to maintain the internal water level by opening when the water level reaches a certain level.

A plurality of the discharge means are formed at least at a position higher than the height of the car battery, so that the car battery is immersed in fresh water fire extinguishing agent. The forming height of the discharge means is set at 10 to 50 cm higher than the battery installation height, and is preferably set at 20 to 30 cm high so that the battery is sufficiently submerged.

In addition, the discharge means 47 can be further equipped with a detection sensor to detect whether or not the fire extinguishing agent is discharged. When the detection sensor detects the discharge of fire extinguishing agent, the amount of fire extinguishing agent used can be reduced by controlling to reduce the discharge of fire extinguishing agent from the chemical tank 41.

The detection sensor can be connected wired or wirelessly to the control device or the control valve of the chemical tank to control the chemical tank.

The flame retardant membrane structure of the present invention will be described in detail with reference to FIGS. 3A and 3B.

The flame retardant film 44 of the present invention may be provided in a form in which a passage portion 46 through which the fire extinguishing agent is transported is partially formed. The flow path portion 46 is formed of a multi-layer main body film that is not partially bonded or is formed through a bar material, and is formed by various methods such as adding a flame retardant cloth to form a flow path portion on the inner surface of the flame retardant film 44. A flow path can be formed in the flame retardant film.

The passage portion 46 has a connection port 441 formed in the center as shown in FIG. 3A and is coupled to the discharge port of the transfer pipe 42, and receives fire extinguishing agent from the combined conveyance pipe to fill the entire interior of the passage portion 46. do.

When the fire extinguishing agent is supplied into the flow path portion 46, the flow path portion expands and spreads due to the supply pressure of the fire extinguishing agent. In other words, when the fire extinguishing agent is supplied to the flame retardant membrane 44 folded and stored inside the flame retardant housing, the flame retardant membrane 44 is filled with the extinguishing agent inside the flow path portion 46, the folded portion is unfolded, and the flow path is unfolded. It is discharged within the flame retardant housing and continues to spread to cover the electric vehicle.

As shown, the flow path portion 46 is arranged vertically in communication with a radiation flow path 461 that extends radially around the connector 441, which is a part connected to the discharge pipe discharge port, to form a roof, and the radiation flow path. A vertical passage 462 that supports the roof portion formed by the radiation passage to be disposed at a certain height, and the lower ends of the vertical passages are connected to each other to form a closed circle or polygon and a floor in contact with the bottom of the electric vehicle charging area. It consists of euros (463).

The radiation passages 461 are shown as four in the drawing, but can be formed with four or more, and the vertical passages 462 are arranged in an expanded cone shape with a wider gap at the bottom than the top to stably maintain the charging area. It can be placed, and the bottom flow path 463 has a cross-section forming a flow path that is wider than the radial flow path and the vertical flow path, thereby increasing the amount of filling inside, so that the bottom flow path can be brought into close contact with the filling area by its own weight. .

In the radiation passage 461, the vertical passage 462, and the bottom passage 463, a plurality of spray nozzles 464 are formed in the direction of the inner closed space to spray the charged fire extinguishing agent in the direction of the electric vehicle 70 placed in the closed space. It can be sprayed to perform fire extinguishing work. In addition, additional auxiliary passages are formed horizontally between the vertical passages 462, and spray nozzles are also formed in the auxiliary passages, so that fire extinguishing agent can be sprayed from various directions simultaneously to achieve rapid fire suppression.

In addition, as shown in FIG. 3C, the bottom passage 463 of the flame retardant membrane 44 is in close contact with the bottom of the charging area and provides a certain degree of watertightness, so the fire extinguishing agent sprayed inside can be absorbed, thereby protecting the electric vehicle battery pack portion. Rapid stabilization of the battery can be achieved by the water bath effect of submerging it in freshwater fire extinguishing agent.

In addition, as referring to FIG. 3D, the bottom flow passage 463 is composed of multiple rows of convex portions 465 formed long along the bottom flow passage on the bottom surface, so that the load of the fire extinguishing agent filled inside the bottom flow passage is at the curved point of the convex portion. It is more concentrated and can increase adhesion to the bottom of the charging area. The convex portion 465 is provided in a closed form with a triangular or curved cross-section to increase the sealing force between the bottom flow path and the bottom surface of the filling area.

The control device 60 is a device that controls various signals within the fire suppression system of the electric vehicle charging station, and is installed within the charging device 20 or separately in a safe area away from the charging facility. The control device provides safety by checking the charging status and blocking charging in the event of an abnormality, or receives general images and thermal images transmitted from a camera measurement device and compares them with preset comparison data to determine whether there is an abnormality. It is provided to the manager to confirm normality or receive an operation signal in response to an abnormality to operate the cut-off fire extinguishing device.

As described above, the flame retardant film for fire suppression in an electric vehicle charging station according to the present invention is, when an electric vehicle fire occurs in the charging area, the flame retardant film spreads quickly by injection of a fire extinguishing agent, covers the electric vehicle, blocks the flame, and sprays inside the flame retardant film. Fire extinguishing agent is sprayed through a nozzle to ensure rapid fire extinguishment. In particular, as the flame retardant membrane is in close contact with the floor of the charging area, the fire extinguishing agent sprayed by the spray nozzle is freshened inside the flame retardant membrane to provide a water tank function. When sufficient fresh water is created, the fire extinguishing agent is discharged to the outside through the discharge means and the fire extinguishing agent is discharged through the spray nozzle. It can provide the effect of reducing the amount of fire extinguishing agent used by reducing the spray amount of the fire extinguishing agent.

10: Fire suppression system
20: Charging device
30: Camera measuring device
40: Blocking fire extinguishing device
41: Chemical tank 42: Transfer pipe
43: flame retardant housing 44: flame retardant membrane
45: main body membrane 46: flow path part
47: discharge means
441: Connector 461: Radiation passage
462: Vertical flow path 463: Bottom flow path
464: spray nozzle 465: convex portion
70: electric car

Claims (5)

In the flame retardant film for fire suppression, which is installed on the upper part of the charging area of an electric vehicle charging station, when a fire occurs, the fire extinguishing agent is injected and expanded to cover the electric vehicle to prevent the spread of flame,
A dome-shaped main body film formed by laminating and bonding flame retardant materials in multi-layers; A flow path is formed in a portion of the main body membrane to transport the fire extinguishing agent supplied from the chemical tank, and the main body membrane is maintained in a dome shape by the pressure of the fire extinguishing agent and is in close contact with the bottom of the charging area to form an enclosed space in which the car is placed inside. Euro Department; a spray nozzle formed on the inner surface of the sealed space in the flow path portion and spraying the transported fire extinguishing agent into the sealed space; Discharging means for discharging the fire extinguishing agent formed on the main body membrane without the passage portion and soaked in the sealed space to the outside so that it is not stored above a certain height,
The euro section,
A plurality of radiation passages are formed in a radial direction from the center that receives the fire extinguishing agent from the chemical tank to spread the upper part of the main body membrane in a cap shape, and a spray nozzle is formed in the direction of the inner sealed space;
a vertical passage with one end communicating with the radiation passage and vertically disposed so that its lower portion extends outward to expand the internal area, and having a spray nozzle formed in the direction of the enclosed space;
Among the plurality of vertical passages, the lower ends of adjacent vertical passages are connected to each other and closed into a ring or square shape, and a bottom passage is in close contact with the bottom of the filling area due to the weight of the injected fire extinguishing agent and collects the fire extinguishing agent sprayed therein. A flame retardant film for fire suppression at an electric vehicle charging station, characterized in that it is composed of: According to paragraph 1,
The discharge means is,
For fire suppression at an electric vehicle charging station, which is installed at a position higher than the height of the electric vehicle battery so that the battery is immersed in the fresh water fire extinguishing agent, and has a plurality of check valves that discharge the fresh water fire extinguishing agent to the outside to maintain the internal water level. Flame retardant membrane. According to paragraph 2,
The discharge means is equipped with a detection sensor that detects whether the fire extinguishing agent is discharged, and when discharge of the fire extinguishing agent is detected by the detection sensor, the electric vehicle is characterized in that it reduces the amount of fire extinguishing agent used by adjusting to reduce the discharge of the fire extinguishing agent from the chemical tank. Flame retardant membrane for fire suppression at charging stations. delete According to paragraph 1,
The bottom surface of the floor passage is composed of multiple rows of convex portions formed long along the bottom passage, so that the load of the fire extinguishing agent filled inside the bottom passage is concentrated at the curved point of the convex portion and comes into close contact with the bottom of the filling area, thereby increasing the sealing force of the internal sealed space. A flame retardant film for fire suppression at an electric vehicle charging station, characterized by an increased flame retardant.

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