Dual-tank frame-based electric vehicle fire automatic flood prevention system

Abstract

The present invention relates to an electric vehicle fire automatic flood prevention system based on a double water tank frame. The electric vehicle fire automatic flood prevention system based on a double water tank frame according to the present invention comprises: an upper water tank frame installed on the ceiling of an underground parking lot or an indoor parking space; a lower water tank frame installed embedded in the floor of the parking space; and a fire detection unit that detects whether a fire has occurred in an electric vehicle parked in the parking space. The technical features include a control unit that detects the charging status of an electric vehicle parked in the parking space; wherein each of the upper water tank frame and the lower water tank frame is formed with an open interior structure and is configured to surround the electric vehicle parked in the parking space; when the fire detection unit detects a fire and the electric vehicle is being charged, the control unit raises the lower water tank frame so that the lower water tank frame surrounds the electric vehicle; and when the fire detection unit detects a fire and the electric vehicle is not being charged, the control unit causes the upper water tank frame to detach from the ceiling and descend so that the upper water tank frame surrounds the electric vehicle.

Description

Technology Field

[0001] The present invention relates to a fire suppression technology for electric vehicles, and more specifically, to an automatic fire flooding and blocking system for electric vehicles that selectively operates double water tank frames provided on the upper (ceiling) and lower (floor) of an underground parking space, respectively, depending on the fire situation occurring during or outside charging of the electric vehicle, surrounds the electric vehicle, and then fills the interior with fire extinguishing water to quickly suppress the fire. Background Technology

[0002] Recently, the adoption of electric vehicles (EVs) is rapidly expanding due to eco-friendly policies and stricter emission regulations.

[0003] However, due to the high energy density structure of lithium-ion batteries used in electric vehicles, there is a high risk that if thermal runaway occurs due to internal or external impact, overcharging, or short circuits, it can instantly lead to a fire accompanied by high-temperature flames and toxic gases.

[0004] In particular, in underground parking lots or enclosed indoor spaces, battery fires are difficult to extinguish with standard sprinklers or powder fire extinguishers due to their characteristics, and there is a problem in that access by firefighting personnel is restricted due to the heat, gas, and electrical hazards generated during the fire suppression process.

[0005] Accordingly, prior art has proposed: ① a mobile structure that loads an electric vehicle onto a tank-type vehicle to suppress flooding (e.g., Patent Publication 10-2023-0138746), ② a method of lowering a tank installed on the upper part of a parking lot to surround and flood a burning vehicle (e.g., Patent Publication 10-2024-0130662), and ③ a mesh-type parking structure that lowers and floods the parking space itself (e.g., Patent Publication 10-2025-0131947).

[0006] However, these conventional technologies have the following limitations. The installation of large water tank vehicles or ceiling water tank devices imposes space constraints, and in the case of descending structures, there is a delay in fire detection and activation; furthermore, there is a problem where response is impossible because the upper structure is difficult to lower while the charging cable is connected.

[0007] In addition, existing technologies face challenges in practical application in underground spaces or apartment complex parking lots due to height restrictions within the parking lot, interference with ceiling equipment, and difficulties in maintenance. Prior art literature

[0008] Published Patent Application No. 10-2023-0138746 (Oct. 05, 2023) Published Patent Application No. 10-2024-0130662 (Aug. 29, 2024) Published Patent Application No. 10-2025-0131947 (Sept. 04, 2025) The problem to be solved

[0009] The present invention aims to solve the aforementioned problems, and the objective of the present invention is to provide a system capable of rapidly encircling and suppressing a fire from an optimal direction (upper or lower) depending on the occurrence of the electric vehicle fire and the charging status.

[0010] In particular, when an electric vehicle is being charged, it is physically difficult or dangerous for the water tank to be lowered from the top of the vehicle or for the device to fall because the charging cable is connected.

[0011] Accordingly, the present invention raises the lower water tank frame when a fire occurs during charging to flood the lower part of the electric vehicle and the battery area, thereby enabling early prevention of thermal runaway in the battery area without damaging the charging connection.

[0012] On the other hand, when the electric vehicle is not charged, the upper water tank frame is immediately detached and lowered to surround the entire vehicle, thereby rapidly blocking the spread of flames and toxic gases to the outside of the vehicle, and allowing firefighting water to be discharged from the upper inner surface nozzle of the water tank frame to suppress the flooding of the entire vehicle. means of solving the problem

[0013] The dual water tank frame-based electric vehicle fire automatic flood prevention system according to the present invention for solving the above problems comprises: an upper water tank frame installed on the ceiling of an underground parking lot or an indoor parking space; a lower water tank frame embedded in the floor of the parking space; a fire detection unit that detects whether a fire has occurred in an electric vehicle parked in the parking space; and a control unit that detects the charging status of an electric vehicle parked in the parking space. Each of the upper water tank frame and the lower water tank frame is formed with an open interior structure and is configured to surround the electric vehicle parked in the parking space. When the fire detection unit detects a fire, if the electric vehicle is being charged, the control unit raises the lower water tank frame so that the lower water tank frame surrounds the electric vehicle. When the fire detection unit detects a fire, if the electric vehicle is not being charged, the control unit causes the upper water tank frame to detach from the ceiling and descend so that the upper water tank frame surrounds the electric vehicle. The technical feature of the system is that

[0014] In addition, the electric vehicle fire automatic flood prevention system based on a double water tank frame according to the present invention may be configured such that the upper water tank frame is coupled to the ceiling part through a connecting part, and the control part controls the release operation of the connecting part.

[0015] In addition, the electric vehicle fire automatic flooding prevention system based on a double water tank frame according to the present invention may be configured such that a fire extinguishing water pipe is installed in the parking space and a fire extinguishing water valve is installed at one end of the fire extinguishing water pipe, and fire extinguishing water is discharged or not discharged depending on the opening and closing operation of the fire extinguishing water valve.

[0016] In addition, the electric vehicle fire automatic flooding prevention system based on a dual water tank frame according to the present invention may be configured such that fire extinguishing water discharged according to the opening and closing operation of the fire extinguishing water valve is discharged into the interior of the upper water tank frame or the lower water tank frame, thereby filling the interior of the upper water tank frame or the lower water tank frame with fire extinguishing water.

[0017] In addition, the electric vehicle fire automatic flooding prevention system based on a dual water tank frame according to the present invention may be configured such that the fire detection unit includes a temperature sensor, a smoke sensor, a gas sensor, and a camera. Effects of the invention

[0018] According to the present invention, the upper or lower water tank frame is selectively operated depending on whether the electric vehicle is being charged and the location of the fire, so that the fire can be suppressed quickly and safely immediately after it occurs, thereby having the effect of not causing structural constraints or delays in fire response as in conventional technology.

[0019] In addition, according to the present invention, when a fire occurs during charging, the lower water tank frame gradually rises to perform immersion cooling centered on the lower part of the electric vehicle and the battery pack area, thereby rapidly blocking thermal runaway, which is the source of the flame. In this process, the vehicle body is not directly pushed up, and since the extinguishing water is filled only inside the lower water tank frame, the risk of mechanical damage to the vehicle or insulation breakdown of the charger terminal is significantly reduced.

[0020] In addition, according to the present invention, when a fire occurs in a non-charging state, the upper water tank frame detaches and descends in a free-fall manner upon release of the connecting link, immediately surrounding the electric vehicle to block the spread of flames and toxic gases. At this time, extinguishing water is discharged from the spray nozzle on the inner surface of the upper water tank frame, automatically flooding the inside of the tank, and the effect of suppressing the flooding of the entire electric vehicle within a short period of time is obtained.

[0021] In addition, according to the present invention, since each frame is configured to surround the electric vehicle through fire extinguishing water spray nozzles on the upper surface of the upper and lower water tank frames and then fill with water inward, damage to surrounding facilities, electrical short circuits, and secondary damage caused by moisture diffusion can be minimized.

[0022] In addition, according to the present invention, since the ceiling and floor within the parking lot are each installed in modular units, it can be applied to various environments, such as underground parking lots with floor height constraints, without changing the existing parking structure. Since each water tank frame can be independently controlled, localized flooding can be achieved by selectively operating only the section where a fire has occurred, and the energy efficiency and maintainability of the entire system are greatly improved.

[0023] Furthermore, according to the present invention, the invention is linked with a charger interface, temperature, smoke, and gas sensors, and a fire detection system to automatically determine a fire situation and realize an adaptive fire response by driving a water tank frame in the most suitable direction. Brief explanation of the drawing

[0024] FIG. 1 is a plan view for illustrating a system according to one embodiment of the present invention. FIG. 2 is a side view illustrating a system according to one embodiment of the present invention. FIG. 3 is a drawing showing the upper water tank frame in a lowered state according to one embodiment of the present invention. FIG. 4 is a drawing showing the lower water tank frame in a raised state according to one embodiment of the present invention. FIGS. 5 and 6 are detailed configuration diagrams of an upper tank frame and a lower tank frame according to an embodiment of the present invention. FIG. 7 is a drawing showing the state in which the second frame is raised according to one embodiment of the present invention. FIGS. 8 and 9 are drawings for explaining a water tank frame adjustment unit according to an embodiment of the present invention. FIG. 10 is a detailed configuration diagram of a fire detection unit according to one embodiment of the present invention. Specific details for implementing the invention

[0025] The description of the present invention is merely an example for structural or functional explanation, and therefore the scope of the present invention should not be interpreted as being limited by the examples described in the text. That is, since the examples may be modified in various ways and may take various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical concept.

[0026] Meanwhile, the meaning of the terms described in this invention should be understood as follows.

[0027] Terms such as "first," "second," etc., are intended to distinguish one component from another, and the scope of rights shall not be limited by these terms. For example, the first component may be named the second component, and similarly, the second component may be named the first component.

[0028] When it is stated that one component is "connected" to another component, it should be understood that while it may be directly connected to that other component, there may also be other components in between. Conversely, when it is stated that one component is "directly connected" to another component, it should be understood that there are no other components in between. Meanwhile, other expressions describing the relationships between components, such as "between" and "exactly between," or "adjacent to" and "directly adjacent to," should be interpreted in the same way.

[0029] A singular expression should be understood to include a plural expression unless the context clearly indicates otherwise, and terms such as "include" or "have" are intended to specify the existence of the implemented features, numbers, steps, actions, components, parts, or combinations thereof, and should be understood not to preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0030] In each step, identifiers (e.g., a, b, c, etc.) are used for convenience of explanation and do not describe the order of the steps; the steps may occur differently from the specified order unless a specific order is clearly indicated in the context. That is, the steps may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

[0031] Unless otherwise defined, all terms used herein have the same meaning as generally understood by those skilled in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having meanings consistent with the context of the relevant technology and should not be interpreted as having an ideal or overly formal meaning unless explicitly defined in this invention.

[0032] FIG. 1 is a plan view for explaining a system according to one embodiment of the present invention, and FIG. 2 is a side view for explaining a system according to one embodiment of the present invention.

[0033] Referring to FIGS. 1 and 2, a dual water tank frame-based electric vehicle fire automatic flood prevention system according to one embodiment of the present invention may be configured to include: an upper water tank frame (100) installed on the ceiling of an underground parking lot or an indoor parking space; a lower water tank frame (200) installed embedded in the floor of the parking space; a fire detection unit (300) that detects whether a fire has occurred in an electric vehicle parked in the parking space; and a control unit (400) that detects the charging status of an electric vehicle parked in the parking space.

[0034] At this time, the upper water tank frame (100) and the lower water tank frame (200) are each formed with an open interior structure and configured to surround the electric vehicle parked in the parking space. When the fire detection unit (300) detects a fire, if the electric vehicle is being charged, the control unit (400) raises the lower water tank frame (200) so that the lower water tank frame (200) surrounds the electric vehicle. When the fire detection unit (300) detects a fire, if the electric vehicle is not being charged, the control unit (400) causes the upper water tank frame (100) to detach from the ceiling and descend so that the upper water tank frame (100) surrounds the electric vehicle.

[0035] The upper water tank frame (100) can be connected to the ceiling part through the connecting part (150), and the control part (400) can be configured to control the release operation of the connecting part (150).

[0036] For example, the connecting part (150) may be formed in a ring shape so that the upper water tank frame (100) can be coupled and fixed to the ceiling part by the connecting part (150). The connecting part (150) is configured to receive a signal from the control unit (400), and the ring-shaped connecting part (150) can be rotated so that the upper water tank frame (100) hanging by the connecting part (150) falls off by the signal transmitted by the control unit (400).

[0037] The configuration of this connecting part (150) is one embodiment, and various forms of connecting part (150) configurations are possible.

[0038] The lower water tank frame (200) can be installed embedded in the floor of the parking space and can be configured to be able to move up and down (up and down) by a separate drive unit. For example, as shown in FIG. 2, the lower water tank frame (100) can be installed to match the parking line of the parking space.

[0039] In the present invention, a fire extinguishing water pipe (500) is installed in the parking space and a fire extinguishing water valve (510) is installed in a part of the fire extinguishing water pipe, and the fire extinguishing water may be discharged or not discharged depending on the opening and closing operation of the fire extinguishing water valve (510).

[0040] Additionally, as needed, a fire extinguishing pipe may be additionally connected to the fire extinguishing water pipe (500) to secure a length up to the parking space.

[0041] With this configuration, the fire extinguishing water discharged according to the opening and closing operation of the fire extinguishing water valve (510) is discharged into the interior of the upper water tank frame (100) or the lower water tank frame (200), so that the interior of the upper water tank frame (100) or the lower water tank frame (200) can be filled with fire extinguishing water.

[0042] For reference, regarding lithium-ion battery fires in electric vehicles, the primary priority is the supply of a large amount of coolant to suppress thermal runaway, and continuous water spraying and fresh water maintenance are required to effectively remove heat from inside the battery pack.

[0043] Therefore, in the present invention, the extinguishing water can be ordinary water. Additionally, an additional extinguishing agent may be included in the extinguishing water; however, the extinguishing agent is not limited to any specific type, and it is preferable to include an extinguishing agent suitable for electric vehicle fires.

[0044] For example, an aqueous vermiculite dispersion (AVD) may be included in the fire extinguishing agent.

[0045] AVD can form a thermal barrier and block heat transfer between cells after initial cooling, and can reduce heat and oxygen access by forming a highly viscous mica film after moisture evaporation to coat the cell surface.

[0046] In addition, encapsulated extinguishing agents may be included in the extinguishing agent. Encapsulated extinguishing agents are components that impart surfactant and micelle encapsulation functions to the system, and can adsorb combustible decomposition gases and improve the cooling rate.

[0047] As a specific example, water can be used as the first agent and an aqueous mica dispersion (AVD) as the second agent. By first releasing the first agent, water, to perform immersion and cooling, and then releasing the second agent, the aqueous mica dispersion (AVD), to inject it into the water, a mica film can be formed around the battery pack to suppress secondary ignition or re-ignition.

[0048] The fire detection unit (300) may be configured to include a temperature sensor (310), a smoke sensor (320), a gas sensor (330), and a camera (340).

[0049] The fire detection unit (300) can detect temperature through a temperature sensor (310), detect smoke through a smoke sensor (320), and detect gases such as carbon monoxide through a gas sensor (330). It can also detect flames or smoke through a camera (340).

[0050] The fire detection unit (300) can determine whether a fire has occurred based on the data detected as above. Additionally, if necessary, the detected data can be transmitted to the control unit (400), and the control unit (400) can determine whether a fire has occurred based on the data.

[0051] The temperature sensor (310), smoke sensor (320), gas sensor (330), and camera (340) may be installed independently of each other in the parking space, or, if necessary, may be modularized into one unit and installed around the parking space. Additionally, they may be installed in the charging device (600) as needed.

[0052] That is, the fire detection unit (300) of the present invention is configured to include a temperature sensor (310), a smoke sensor (320), a gas sensor (330), and a camera (340), and can be configured to determine whether there is a fire in an electric vehicle with high precision by fusing data obtained from each sensor.

[0053] The camera (340) captures at least one of a visible light image or a thermal image and analyzes the heat distribution and smoke generation pattern in real time.

[0054] The fire detection unit (300) detects a fire through the following steps.

[0055] 1. Sensor data collection and preprocessing steps

[0056] Temperature, smoke, gas, and video signals are collected periodically, and averaging and reference calibration processes are performed to eliminate instantaneous anomalies or noise from each sensor. During this process, the system can be configured to periodically update reference values ​​for each sensor to reflect environmental changes caused by long-term temperature fluctuations, parking lot ventilation, and the like.

[0057] 2. Analysis of Change Rates by Sensor

[0058] The temperature sensor (310) analyzes not only the absolute temperature but also the short-term rise rate so that it can be distinguished from general environmental temperature changes.

[0059] The smoke sensor (320) determines whether the concentration continues to rise for a certain period of time or longer by using a change in light transmittance or scattered light.

[0060] The gas sensor (330) measures the concentration of carbon monoxide (CO), hydrogen cyanide (HCN), volatile organic compounds (VOC), etc., and determines a dangerous state when it increases above a certain rate.

[0061] The camera (340) detects the occurrence of local high-temperature regions in the thermal image, or smoke-like textures and movement patterns in the visible light image, to determine whether a flame or combustion phenomenon is visually confirmed.

[0062] 3. Integrated Judgment Phase

[0063] The fire detection unit (300) calculates the overall risk level by fusing the judgment results of each sensor using a weight-based integrated algorithm. At this time, external information such as the charging status (CS) and vehicle occupancy status (OS) of the electric vehicle is input together, and the proportion of sensors with a high probability of fire is automatically adjusted.

[0064] For example, when an electric vehicle is charging, the weight given to temperature sensors and thermal imaging cameras is increased due to the high risk of fire caused by battery overheating, while when the electric vehicle is not charging, the weight given to smoke sensors and cameras is increased to focus on detecting smoke, flames, and gas spread outside the vehicle.

[0065] In this way, the contribution of each sensor is dynamically adjusted according to the situation, allowing for a rapid response to actual fires while reducing unnecessary false alarms.

[0066] 4. Step-by-step alarm judgment stage

[0067] When the integrated risk level rises above a certain level, the fire detection unit (300) transitions to a 'suspicion stage (Pre-Alarm)', increases the frame rate and sampling frequency of surrounding cameras, and performs a verification procedure through additional data collection.

[0068] If a temperature rise, an increase in smoke concentration, the generation of harmful gases, or signs of combustion in the image are simultaneously detected for a period longer than the specified time, it switches to the 'Alarm' stage and transmits a full-scale extinguishing device operation signal to the control unit (400).

[0069] Additionally, the fire detection unit (300) may have the following correction function to exclude false signals caused by external factors (e.g., vehicle exhaust, humidity, dust, steam, etc.).

[0070] For example, even if an increase in smoke concentration is detected, the alarm is withheld if the actual combustion pattern is not confirmed in the video. Local temperature rises caused by temporary heat sources (heaters, exhaust vents, etc.) are not classified as a fire, as the system tracks whether they dissipate within a certain period. If prolonged environmental changes are detected, the threshold value is automatically reset to prevent false positives caused by long-term environmental deviations.

[0071] With the above configuration, the present invention spatially fuses the combined detection results of temperature, smoke, gas, and images, and automatically adjusts the judgment logic according to the charging status and parking situation, thereby simultaneously improving the reliability and response speed of fire detection. Accordingly, compared to conventional fire detection methods based on a single sensor, it is possible to provide the effect of a lower false alarm rate and a reduced response time in the event of an actual fire.

[0072] In the present invention, the control unit (400) can receive information regarding whether a fire has occurred from the fire detection unit (300) or determine whether a fire has occurred based on data transmitted from the fire detection unit (300).

[0073] In addition, the control unit (400) can lower the upper water tank frame (100) or raise the lower water tank frame (200) in the event of a fire.

[0074] The technical feature of the present invention is that, in the event of a fire, one of the upper water tank frame (100) and the lower water tank frame (200) is selected and moved. The criterion for this selection is whether the electric vehicle parked in the parking space is being charged.

[0075] If the electric vehicle is being charged, the lower tank frame (200) is raised, and if the electric vehicle is not being charged, the upper tank frame (100) is lowered.

[0076] If the electric vehicle is being charged, the electric vehicle and the charging device (600) are connected by a charging cable as shown in Fig. 1. At this time, if the upper water tank frame (100) descends from the ceiling, it gets caught on the charging cable. That is, there is a problem in that the upper water tank frame (100) strongly impacts the charging cable downward, causing additional damage or potentially making the fire even worse.

[0077] In order to prevent this, in the present invention, if the electric vehicle is being charged, the upper water tank frame (100) is not lowered, and the lower water tank frame (200) is raised.

[0078] Conversely, if the electric vehicle is not being charged, the upper water tank frame (100) is lowered. Since the upper water tank frame (100) can free-fall immediately by simply releasing the connecting part (150), the upper water tank frame (100) can be positioned around the electric vehicle more quickly with less driving energy.

[0079] FIG. 3 shows the upper water tank frame (100) lowered and positioned around the electric vehicle, and FIG. 4 shows the lower water tank frame (200) raised and positioned around the electric vehicle.

[0080] The upper water tank frame (100) and the lower water tank frame (200) according to the present invention can be formed in the same shape.

[0081] And such a tank frame may be configured to include a first frame (10) placed on the outside and a second frame (20) formed inside the first frame, and the second frame (20) may be configured to rise by buoyancy.

[0082] At this time, it is preferable that an inlet be formed in each of the first frame (10) and the second frame (20) so that extinguishing water flows into the interior of the first frame (10) and the second frame (20).

[0083] The first frame (10) may be configured to include a first outer surface (11) and a first inner surface (12), and the second frame (20) may be configured to include a second outer surface (21) and a second inner surface (22). As shown in FIG. 5, an inlet may be formed by the first inner surface (12) being shorter than the first outer surface (11), and an inlet may be formed by the second inner surface (22) being shorter than the second outer surface (21).

[0084] With this configuration, extinguishing water can flow into the interior of the first frame (10) and into the interior of the second frame (20).

[0085] And as the extinguishing water gradually flows in, the first frame (10) remains in place, and only the second frame (20) rises to become a state like Fig. 6.

[0086] In order to keep the first frame (10) as is and raise only the second frame (20), it is preferable to form the first frame (10) with a material having a specific gravity greater than water and the second frame (20) with a material having a specific gravity less than water.

[0087] For example, materials with a specific gravity greater than that of water can be metals. Most metals have a specific gravity greater than that of water, such as iron, copper, and lead. However, since these metals rust when exposed to fire extinguishing water, a surface coating is required. Additionally, alloys may be used as needed, or the structure may be formed with a plastic exterior and a high-density material embedded inside.

[0088] Materials with a specific gravity lower than water can be synthetic resins (plastics), and can be polyethylene, polypropylene, etc.

[0089] With this configuration, as the extinguishing water gradually flows in, the first frame (10) remains in place while only the second frame (20) rises, so that it can be in a state like that shown in FIG. 6.

[0090] In the present invention, with the above configuration, a small space is used when the upper water tank frame (100) and the lower water tank frame (200) are provided before a fire occurs, and after a fire occurs, a substantially larger space is used as a space for filling with fire extinguishing water, thereby further improving space utilization.

[0091] Also, referring to FIGS. 8 and 9, the dual water tank frame-based electric vehicle fire automatic flooding prevention system according to one embodiment of the present invention can raise the water tank frame adjustment unit (700) embedded in the floor after the control unit (400) lowers the upper water tank frame (100).

[0092] The water tank frame adjustment unit (700) is installed embedded in the floor and can be configured to be vertically movable so as to protrude upward from the floor surface when raised. Additionally, the water tank frame adjustment unit (700) can be formed along the outer perimeter of the lower water tank frame (200) so as not to overlap vertically with the lower water tank frame (200).

[0093] Additionally, the tank frame adjustment unit (700) may be configured to include an inclined diagonal section that increases in height as it moves away from the upper tank frame (100), and a straight section perpendicular to the floor surface below the diagonal section.

[0094] In the present invention, by the above configuration, an error range can be secured when the upper water tank frame (100) descends to the bottom, and the upper water tank frame (100) can be aligned as the diagonal section rises.

[0095] For example, as the tank frame adjustment unit (700) rises, the upper tank frame (100) located above the diagonal section naturally slides and aligns, and the upper tank frame (100) can be accurately positioned in the originally designed position by the straight section.

[0096] The width of the tank frame adjustment unit (700) shown in the drawing is merely one embodiment, and it is preferable that it be formed with a width that can secure an error range when the upper tank frame (100) is lowered to the bottom.

[0097] In the present invention, the upper tank frame (100) descends by free fall, but it may move slightly due to impact with the bottom part, making it difficult to position it accurately in the designed location. However, the upper tank frame (100) can be aligned as the diagonal part rises by the tank frame adjustment unit (700) as described above.

[0098] It should be made clear that the above embodiments are merely illustrative and not limiting, and that modifications to components that can be equivalently substituted within the scope of the technical spirit or field of the present invention provided by the following claims are considered to be within the scope of the present invention. Explanation of the symbols

[0099] 100: Upper water tank frame 200: Lower tank frame 300: Fire detection unit 400: Control unit 500: Fire extinguishing water piping 600: Charging device

Claims

Claim 1 A dual water tank frame-based electric vehicle fire automatic flooding prevention system comprising: an upper water tank frame installed on the ceiling of an underground parking lot or an indoor parking space; a lower water tank frame embedded in the floor of the parking space; a fire detection unit that detects whether a fire has occurred in an electric vehicle parked in the parking space; and a control unit that detects the charging status of an electric vehicle parked in the parking space; wherein each of the upper water tank frame and the lower water tank frame is formed with an open interior structure and configured to surround the electric vehicle parked in the parking space; and when the fire detection unit detects a fire and the electric vehicle is charging, the control unit raises the lower water tank frame so that the lower water tank frame surrounds the electric vehicle; and when the fire detection unit detects a fire and the electric vehicle is not charging, the control unit causes the upper water tank frame to detach from the ceiling and descend so that the upper water tank frame surrounds the electric vehicle. Claim 2 A dual water tank frame-based electric vehicle fire automatic flood prevention system, characterized in that, in claim 1, the upper water tank frame is coupled to the ceiling part through a connecting part, and the control part controls the release operation of the connecting part. Claim 3 A double water tank frame-based electric vehicle fire automatic flooding prevention system according to claim 1, characterized in that a fire extinguishing water pipe is installed in the parking space and a fire extinguishing water valve is installed at one end of the fire extinguishing water pipe, and the fire extinguishing water is configured to be discharged or not discharged depending on the opening and closing operation of the fire extinguishing water valve. Claim 4 A dual water tank frame-based electric vehicle fire automatic flooding prevention system, characterized in that, in paragraph 3, fire extinguishing water discharged according to the opening and closing operation of the fire extinguishing water valve is discharged into the interior of the upper water tank frame or the lower water tank frame, and the interior of the upper water tank frame or the lower water tank frame is filled with fire extinguishing water. Claim 5 A dual water tank frame-based electric vehicle fire automatic flood prevention system, characterized in that, in claim 1, the fire detection unit comprises a temperature sensor, a smoke sensor, a gas sensor, and a camera.

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