Water tight motor for elecric vehicle shutter device

Abstract

The present invention relates to a watertight motor for an electric vehicle shutter device, comprising: a first watertight motor positioned at a specific side position of a first shutter guide so as to be driven when the lower seal of the shutter reaches the floor, and generating a watertight motor driving start signal while providing a first contact driving force to press the lower seal against the floor when the lower seal reaches the floor, and generating a watertight motor driving stop signal while stopping the first contact driving force when the lower seal starts from the floor; and a second watertight motor that receives the watertight motor driving start signal, provides a second contact driving force, receives the watertight motor driving stop signal, and stops the second contact driving force.

Description

Technology Field

[0001] The present invention relates to a watertight motor for an electric vehicle shutter device, and more specifically, to a watertight motor for an electric vehicle shutter device that supports the tight seal of the watertight membrane so that, when an electric vehicle fire occurs in a parking lot, a fire compartment is formed by installing a watertight membrane on the shutter, and watertightness and airtightness are provided within the fire compartment to quickly block the fire and simultaneously block secondary fires and explosions. Background Technology

[0003] As the adoption of electric vehicles (EVs) has increased in recent years, concerns regarding fires have also grown. While there were a total of 10 EV fire incidents from 2018 to 2019, the number of incidents has been on the rise since 2020, when the number of EVs began to increase. It was found that there were 59 EV fire incidents occurring in parking lots from 2021 to July 2024. EV fire accidents can be classified into types such as fires during charging, driving, parking, and after a collision, with incidents occurring most frequently during charging or parking.

[0004] Electric vehicles are defined as vehicles that use only an electric motor and a drive battery as power sources for propulsion. Electric vehicle fires primarily originate in the battery pack. A battery pack consists of multiple modules that integrate numerous battery cells. When an electric vehicle fire occurs, combustion takes the form of a jet flame, emitting horizontal flames along the sides of the battery. The temperature of the flames can exceed 1,000°C, and if such a fire occurs in a parking lot, it can spread rapidly and continuously. However, parking lots are enclosed environments with high vehicle density, making the risk of secondary fire damage high. In particular, underground parking lots are difficult for fire trucks to access due to their characteristics, and there is insufficient space to install mobile water tanks for fire suppression. Mobile water tanks are essential for cooling batteries by submerging them in water during electric vehicle fires.

[0005] Therefore, as the market share of electric vehicles increases and the penetration rate of charging stations in parking lots rises, there is a growing demand for fire prevention technologies capable of suppressing and preventing the spread of electric vehicle fires in parking lots. Prior art literature

[0007] Korean Registered Patent No. 10-0661917 (Dec. 20, 2006) Korean Registered Patent No. 10-2064467 (January 3, 2020) The problem to be solved

[0009] One embodiment of the present invention aims to provide a watertight motor for an electric vehicle shutter device that supports the tight seal of the watertight membrane so that, when an electric vehicle fire occurs in a parking lot, a fire compartment is formed by installing a watertight membrane on the shutter, and watertightness and airtightness are provided within the fire compartment to quickly block the fire and simultaneously block secondary fires and explosions.

[0010] One embodiment of the present invention aims to provide a watertight motor for an electric vehicle shutter device that can increase watertightness in the process of forming a submerged structure in which the lower battery portion of the electric vehicle can be submerged in water by placing a water-blocking member at the lower part of the shutter and allowing the water-blocking member to move along the vertical movement of the shutter. means of solving the problem

[0012] Among the embodiments, a watertight motor for an electric vehicle shutter device is positioned at a specific side position of a first shutter guide so as to be driven when the lower seal of the shutter reaches the floor, and when the lower seal reaches the floor, it generates a watertight motor driving start signal while providing a first contact driving force to press the lower seal against the floor, and when the lower seal starts from the floor, it generates a watertight motor driving stop signal while stopping the first contact driving force; and a second watertight motor that receives the watertight motor driving start signal, provides a second contact driving force, receives the watertight motor driving stop signal, and stops the second contact driving force.

[0013] The first and second watertight motors can each provide the first and second close driving forces toward the floor by connecting the sides of the lower section positioned between the first and second shutter guides.

[0014] The above-mentioned water-repellent lower section has a thickness greater than that of the lowest slot among the plurality of slots constituting the shutter, and can increase watertightness by attaching a latch formed at the end of the lowest slot to the upper surface and inserting a lower protruding rubber packing into the bottom.

[0015] The above-mentioned water barrier is composed of mutually coupled upper and lower water barrier sections, and the upper and lower water barrier sections are coupled with a connecting rubber packing to support increased watertightness and rolling or unrolling. Effects of the invention

[0017] The disclosed technology may have the following effects. However, this does not mean that a specific embodiment must include all of the following effects or only the following effects; therefore, the scope of the rights of the disclosed technology should not be understood as being limited by this.

[0018] A watertight motor for an electric vehicle shutter device according to one embodiment of the present invention can support the tight seal of the watertight barrier so that, when an electric vehicle fire occurs in a parking lot, a fire compartment is formed by installing a watertight barrier on the shutter, and watertightness and airtightness are provided within the fire compartment to quickly block the fire and simultaneously block secondary fires and explosions.

[0019] A watertight motor for an electric vehicle shutter device according to one embodiment of the present invention can increase watertightness in the process of forming a submerged structure in which the lower battery portion of the electric vehicle can be submerged in water by placing a water-blocking element at the lower part of the shutter, thereby moving along with the vertical movement of the shutter. Brief explanation of the drawing

[0021] FIG. 1 is a drawing illustrating a shutter device according to the present invention. Figure 2 is a front view showing the shutter device of Figure 1. Figure 3 is a cross-sectional view showing part AA of Figure 2. Figure 4 is a cross-sectional view showing the BB portion of Figure 2. Figure 5 is a cross-sectional view showing the CC portion of Figure 2. FIGS. 6a-6b is a detailed view showing the essential parts of the shutter of FIG. 3. FIG. 7 is a drawing illustrating an embodiment of the application of a shutter device according to the present invention. Specific details for implementing the invention

[0022] 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 are subject to various modifications and may take various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical concept. Furthermore, the objectives or effects presented in the present invention do not imply that a specific example must include all of them or only such effects; therefore, the scope of the present invention should not be understood as being limited by them.

[0023] Meanwhile, the meaning of the terms described in this application should be understood as follows.

[0024] 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.

[0025] When it is stated that one component is "connected" to another component, it should be understood that it may be directly connected to that other component, or that there may 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.

[0026] 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.

[0027] 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.

[0028] As used herein, the terms “vehicle,” “vehicular,” or other similar terms may be understood to include automobiles, passenger automobiles (generally including sports utility vehicles (SUVs)), buses, trucks, various commercial vehicles, vessels including various boats and ships, airplanes, etc., and hybrid automobiles, electric automobiles, hybrid electric automobiles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels derived from non-petroleum resources).

[0029] 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 application.

[0031] FIG. 1 is a drawing illustrating a shutter device according to the present invention, FIG. 2 is a front view showing the shutter device of FIG. 1, FIG. 3 is a cross-sectional view showing part AA of FIG. 2, FIG. 4 is a cross-sectional view showing part BB of FIG. 2, FIG. 5 is a cross-sectional view showing part CC of FIG. 2, and FIG. 6a and 6b are detailed views showing the essential parts of the shutter of FIG. 3.

[0032] Referring to FIGS. 1 to 6b, the shutter device (100) may include first and second shutter guides (110a, 110b), a shutter (120), a shutter box (130), first and second watertight motors (140a, 140b), a driving motor (150), and a controller (160).

[0033] The first and second shutter guides (110a, 110b) are positioned on both sides. The first and second shutter guides (110a, 110b) guide the vertical movement of the shutter (120) to enable the shutter (120) to move up or down stably. In one embodiment, the first and second shutter guides (110a, 110b) may be made of the same material as the shutter (120) to improve heat resistance, flame resistance, and smoke prevention performance, but are not necessarily limited thereto and may be made of various materials with high rigidity capable of withstanding fire or external impact.

[0034] The first and second shutter guides (110a, 110b) serve as passages for the shutter (120) and are installed at both ends of the shutter (120) to support the shutter (120). In one embodiment, the first and second shutter guides (110a, 110b) may be installed in a rail format.

[0035] The shutter (120) may be positioned between the first and second shutter guides (110a, 110b). The shutter (120) may be opened and closed along the first and second shutter guides (110a, 110b) and may operate as a fire shutter in the event of a fire. The shutter (120) may move vertically in correspondence with the rotation of a drive motor (150) located in a shutter box (130) installed above the first and second shutter guides (110a, 110b). In one embodiment, the shutter (120) may be made of GA (Galva-annealed iron) steel material. GA is a hot-dip galvanized steel sheet having a plating layer mixed with zinc and iron, which has excellent weldability, minimal plating peeling, excellent paint adhesion, and corrosion resistance, and is used as a material for automobiles, electrical and electronic products, fire doors, steel fixtures, and color coatings. Here, the shutter (120) can be made of EGI 1.15T (galvanized steel).

[0036] The shutter (120) may include a lower section (121) positioned at the very bottom and a plurality of slots (123) sequentially positioned on the upper part of the lower section (121).

[0037] The water barrier (121) is a water barrier and constitutes the lower part of the shutter (120). That is, the shutter device (100) can form the upper part of the shutter (120) as a fire shutter by configuring it with a plurality of slats (123) and the lower part as a water barrier (121) to provide a fire compartment and a water barrier simultaneously. The plurality of slats (123) form the body of the shutter (120) and are sequentially arranged on the upper part of the water barrier (121) so that they can be flexibly folded or unfolded when the shutter (120) moves up and down. Each of the plurality of slats (123) is made of a thin and sturdy material, and the plurality of slats (123) are overlapped to completely close the shutter (120), thereby preventing the spread of heat and smoke to the outside in the event of a fire.

[0038] The water-blocking plate (121) can be vertically moved together with the vertical movement of the plurality of slots (123). The water-blocking plate (121) can be made of the same or different material as the plurality of slots (123). For example, the water-blocking plate (121) can be made of the same GA steel material as the plurality of slots (123) or of a different material such as aluminum or stainless steel.

[0039] The lower seal (121) may be composed of upper and lower seal sections (210a, 210b) that are joined together. The shutter (120) may include a hinge member (125) connecting the lower seal (121) and a plurality of slots (123). As shown in FIG. 3, the upper and lower seal sections (210a, 210b) of the lower seal (121) may be foldably joined through the hinge member (125). Each of the plurality of slots (123) may also be joined together through the hinge member (125). The lower seal (121) may be vertically moved along the first and second shutter guides (110a, 110b). As illustrated in the enlarged view in FIG. 3, the lower protruding rubber packing (310) can be attached to the bottom when the shutter (120) is unrolled and closed. The lower protruding rubber packing (130) is attached to the bottom of the lower protruding rubber packing (121) when the shutter (120) is closed, thereby attaching the lower protruding rubber packing (121) to the bottom and providing watertightness to the inner space of the shutter (120).

[0040] As shown in FIG. 6a, the lower seal (121) may have a recessed groove formed in the lower part and a lower protruding rubber packing (310) may be fitted into the recessed groove in a form that protrudes downward. The lower protruding rubber packing (310) is formed protruding at a bottom position corresponding to the lower recessed groove of the lower seal (121) so that when the lower seal (121) reaches the bottom, it is fitted into place to ensure close contact between the lower seal (121) and the bottom surface.

[0041] Additionally, the water-blocking lower section (121) may have a thickness greater than that of the lowest slot among the plurality of slots (123), and may increase watertightness by attaching a latch (129) formed at the end of the lowest slot to the upper surface and inserting a lower protruding rubber packing (310) into the bottom. For example, assuming the thickness of the lowest slot is 1.15T, the water-blocking lower section (121) may have a thickness of 1.2T. The shutter (120) may be designed so that the thickness of the water-blocking lower section (121) is greater than the thickness of the slot (123), thereby increasing the structural rigidity of the water-blocking lower section (121) and enhancing water-blocking performance. As the thickness of the water-blocking lower section (121) increases, the contact area with the bottom increases, so it can be more closely attached to the bottom due to physical pressure, thereby increasing watertightness performance. Additionally, the lower support (121) can stably support the entire structure at the lowest part of the shutter (120). In particular, since the load is most heavily applied to the lowest slot among the multiple slots (123) during the unrolling process of the shutter (120), the overall stability of the shutter (120) can be increased by making the thickness of the lower support (121) relatively thick.

[0042] The shutter (120) can connect the upper surface of the water barrier (121) and the end of the lowest slot among the plurality of slots (123) by means of a latch (129). Here, as shown in FIG. 6b, one side of the latch (129) may be connected in a hooked manner to the end of the lowest slot among the plurality of slots (123), and the other side may be connected in a hooked manner to the upper surface of the upper water barrier section (210a) of the water barrier (121). The water barrier (121) can support increased watertightness and rolling or unrolling by connecting the upper and lower water barrier sections (210a, 210b) with a connecting rubber packing (127). The lower sealing section (121) is configured by combining upper and lower sealing sections (210a, 210b) so that it can adaptively move when the shutter (120) is rolled or unrolled, and maintenance costs can be reduced by replacing only specific sealing sections without the need to replace the entire section in the event of damage. Here, the connecting rubber packing (127) seals the space between the upper and lower sealing sections (210a, 210b) and allows the sealing sections to naturally deform when the shutter (120) is rolled or unrolled, and can absorb friction and shock caused by movement.

[0043] The water barrier (121) can form a water barrier up to a specific height of the parked vehicle when it reaches the ground during the unrolling process. Here, the specific height may correspond to a height where water can be filled up to 1m above the battery section at the bottom of the vehicle if the vehicle is an electric vehicle.

[0044] The shutter box (130) is positioned on the upper part of the first and second shutter guides (110a, 110b) and rolls the shutter (120) inward or unrolls the shutter (120) outward. In one embodiment, the shutter box (130) may be fixed to the upper part of the first and second shutter guides (110a, 110b) via a fixing pin (not shown). The shutter box (130) may form an internal space to accommodate the rolling shutter (120) within the internal space. When the shutter device (100) is installed in a parking lot, the shutter (120) may normally be rolled inward into the shutter box (130) to open the entrance of the parking lot, allowing vehicles to be parked smoothly. In the event of a fire, the shutter (120) may be unrolled outward from the shutter box (130) to close the entrance of the parking lot, thereby creating a fire-resistant compartment to prevent the fire from a parked vehicle from spreading to other parking spaces.

[0045] The first and second watertight motors (140a, 140b) are positioned at specific lateral locations of the first and second shutter guides (110a, 110b) so that they can be driven when the water-blocking member (121) arrives at the floor, and can provide a contact driving force to press the water-blocking member (121) against the floor when it arrives at the floor. The first and second watertight motors (140a, 140b) can provide a contact driving force toward the floor by connecting the sides of the lower section (210b) positioned between the first and second shutter guides (110a, 110b). Specifically, the first and second watertight motors (140a, 140b) can be positioned at specific locations of the first and second shutter guides (110a, 110b) positioned on both sides of the shutter (120). The first and second watertight motors (140a, 140b) are connected to the sides of the lower watertight section (210b) of the watertight section (121) and can operate when the shutter (120) is lowered and the watertight section (121) reaches the floor. When the shutter (120) is closed and the watertight section (121) reaches the floor, the first and second watertight motors (140a, 140b) can provide additional driving force to press the lower watertight section (210b) against the floor. That is, when the shutter (120) is lowered and the watertight section (121) touches the floor, the first and second watertight motors (140a, 140b) can press against the floor from both sides of the lower watertight section (210b) to increase the bonding force with the lower protruding rubber packing (310) inserted into the floor, thereby pressing the floor together. The first and second watertight motors (140a, 140b) can be driven when the water barrier (121) reaches the floor. To this end, the first and second watertight motors (140a, 140b) may be implemented to include a sensor that detects the water barrier (121) reaching the floor. For example, the water barrier (121) can be detected by installing a sensor at a location adjacent to the floor of the first and second shutter guides (110a, 110b).In this case, photodiodes, contact sensors, proximity sensors, etc., can be used as sensors.

[0046] In terms of controlling the first and second watertight motors (140a, 140b), the first watertight motor (140a) generates a watertight motor drive start signal while providing a first contact driving force to press the watertight plate (121) against the floor when the watertight plate (121) arrives at the floor. Additionally, the first watertight motor (140a) can generate a watertight motor drive stop signal while stopping the first contact driving force when the watertight plate (121) departs from the floor. The watertight motor drive start signal and the watertight motor drive stop signal can be used for synchronization of the first and second watertight motors (140a, 140b).

[0047] The second watertight motor (140b) receives a watertight motor drive start signal and provides a second close-fitting drive force, and receives a watertight motor drive stop signal and stops the second close-fitting drive force.

[0048] The drive motor (150) can support the vertical movement of the shutter (120) by performing rolling or unrolling. The drive motor (150) is installed on the upper part of the first and second shutter guides (110a, 110b) and can provide power for the vertical movement of the shutter (120). In one embodiment, the drive motor (150) is installed inside the shutter box (130) and a sprocket is mounted on the drive shaft so that rolling or unrolling can be performed by rotating the sprocket in the forward or reverse direction. During the rolling process of the drive motor (150), the shutter (120) can be drawn into the interior of the shutter box (130) and wound onto the storage shaft to be stored. During the unrolling process of the drive motor (150), the shutter (120) can be unwound onto the storage shaft and pulled out to the outside of the shutter box (130).

[0049] The controller (160) can control the overall operation of the shutter device (100). The controller (160) may be installed inside the shutter box (130) or configured as an independent device outside.

[0050] When a fire is detected, the controller (160) performs unrolling of the drive motor (150) so that the shutter (120) is unrolled to the outside of the shutter box (130), thereby closing the entrance to the parking lot and fire-compartmenting the parking lot.

[0051] Additionally, when the shutter (120) is operated and the arrival of the water barrier (121) at the bottom is detected, the controller (160) drives the first and second watertight motors (140a, 140b) to tightly bond the water barrier (121) to the bottom to form a water barrier.

[0052] The controller (160) can control the water supply to spray firewater inside a fire-compartmented and airtight parking lot to suppress a fire. The controller (160) can stop spraying firewater when the water level of the firewater filled inside the parking lot exceeds a specific standard. To this end, the shutter device (100) may be equipped with a water level detection sensor to detect the water level of the firewater. Here, the specific standard may correspond to a location where the height of the water barrier (121) is lower than or equal to a certain portion of the electric vehicle's battery section. For example, a specific standard may be set as a location where the water can be filled up to 1m above the lower battery section of the electric vehicle. In one embodiment, the controller (160) can recognize the vehicle type during the vehicle parking process and can set a specific standard for the water level at which the spraying of firewater is stopped based on the battery location according to the recognized vehicle type.

[0053] When the fire is extinguished, the controller (160) can control the water supply to stop the spraying of firefighting water and operate the shutter (120) to open the entrance of the parking lot. That is, the controller (160) can open the entrance of the parking lot by driving the first and second watertight motors (140a, 140b) to release the tight coupling of the water barrier (121), and then performing rolling of the drive motor (150) so that the shutter (120) rolls into the interior of the shutter box (130).

[0054] The shutter device (100) can normally use the shutter (120) as a security shutter. The shutter device (100) can unroll the shutter (120) at a designated first time to close the entrance of the parking lot, thereby protecting the parked vehicles in the parking lot or preventing unauthorized parking of vehicles. Additionally, the shutter device (100) can roll the shutter (120) at a designated second time to open the entrance of the parking lot, thereby allowing vehicles to be parked smoothly in the parking lot.

[0056] FIG. 7 is a drawing illustrating an embodiment of the application of a shutter device according to the present invention.

[0057] Referring to FIG. 7, the shutter device (100) is installed at the entrance of the garage (700) and can automatically close the entrance of the garage (700) in the event of a fire in a vehicle (10) parked in the garage (700) to fire-block the space inside the garage (700). The shutter device (100) can ensure heat resistance, flame resistance, smoke resistance, and watertightness in the fire-blocked space in the event of a fire in the vehicle (10). In particular, the shutter device (100) can block fire by means of a shutter (120), and at the same time, a water barrier (121) is placed at the very bottom of the shutter (120) to fill the vehicle (10) with water up to a certain amount to block secondary fire and explosion.

[0058] The garage (700) is a parking lot provided with space for at least one vehicle (10) to be parked, and an independent parking space may be provided for each parked vehicle (10). Here, the vehicle (10) may correspond to an automobile as a means of transportation that transports passengers or cargo using power produced by an engine. The vehicle (10) may include not only automobiles but also various means of transportation capable of moving using power. In particular, the vehicle (10) may correspond to an electric vehicle that includes electric power obtained from a rechargeable energy storage device (e.g., one or more rechargeable electrochemical cells or other types of batteries) as part of its locomotion capabilities. In this case, the electric vehicle may include motorcycles, carts, scooters, etc. Additionally, a hybrid electric vehicle may correspond to a vehicle having two or more power sources, for example, gasoline-based power and electric-based power.

[0059] An electric vehicle charging device (710) that provides electric charging to a parked vehicle (10) may be installed in the garage (700). The electric vehicle charging device (710) may be implemented to provide charging services only to a designated vehicle (10), and to this end, it may include means for recognizing an accessed vehicle (10) and means for performing authentication on the recognized vehicle (10).

[0060] A heat smoke detection sensor (730) is installed in a specific area of ​​the garage (700) and can detect fire through surrounding heat detection, smoke detection, flame detection, etc. Here, the specific area may correspond to the ceiling of the garage (700) where heat smoke detection is easy, but is not necessarily limited thereto and may correspond to a parking area formed near the electric vehicle charging device (710). The heat smoke detection sensor (730) may be composed of a heat smoke composite detector or individual standalone detectors. The heat smoke detection sensor (730) may be connected to the shutter device (100) via a network. The heat smoke detection sensor (730) can detect the smoke concentration and temperature of the surrounding environment and notify the network-connected shutter device (100).

[0061] The water supply unit (750) can spray firewater into the garage (700) where a fire has been detected. Here, the water supply unit (750) may include a sprinkler system to spray firewater into the garage (700). The water supply unit (750) may be connected to the shutter device (100) via a network. The water supply unit (750) may be linked with the shutter (120) of the shutter device (100) to spray firewater when the garage (700) is sealed and watertightness is ensured, thereby filling the fire vehicle (10) with water.

[0062] When a fire is detected, the shutter device (100) can operate as follows.

[0063] First, the shutter device (100) can close the entrance of the garage (700) by operating the shutter (120) through the drive motor (150). The shutter device (100) can detect a fire in the garage (700) by detecting heat or smoke through the heat or smoke detection sensor (730). An electric vehicle charging device (730) is installed in the garage (700), and a fire may occur due to various problems such as battery overheating during the charging process of the vehicle (10) or during the parking process of the vehicle (10). The shutter device (100) can close the entrance of the garage (700) by unrolling the shutter (120) stored inside the shutter box (130) to the outside, thereby creating a fire-resistant compartment of the garage (700).

[0064] Then, the shutter device (100) can ensure the watertightness of the garage (700) by proceeding with the sealing connection of the water barrier (121) through the first and second watertight motors (140a, 140b), and then control the water supply device (750) to spray firefighting water into the garage (700), and stop spraying the firefighting water when the water level exceeds a specific standard through the detection of the firefighting water level. The shutter device (100) can ensure the watertightness of the garage (700) by driving the first and second watertight motors (140a, 140b) to tightly connect the water barrier (121) to the floor of the garage (700) during the process in which the water barrier (121) is positioned at the bottom of the shutter (120) and the water barrier (121) moves vertically along the shutter (120) to close the entrance. The shutter device (100) can quickly extinguish a fire by spraying firefighting water into a garage (700) that has watertightness, thereby turning the interior of the garage (700) into a flood tank and cooling the vehicle (10), and can perform a return function after the fire is extinguished.

[0065] The shutter device (100) can release the sealing connection of the water barrier (121) through the first and second watertight motors (140a, 140b) and operate the shutter (120) through the drive motor (150) to provide an opening operation of the entrance / exit of the garage (700).

[0067] The shutter device according to the present invention implements a water-blocking composite fire shutter, thereby blocking the fire and simultaneously suppressing it in the event of an electric vehicle fire, which can serve as a countermeasure against electric vehicle fires that have recently become a social issue.

[0068] In addition, the shutter device according to the present invention can easily perform rolling or unrolling of the shutter by designing the shutter in a form in which each slot is hinge-connected.

[0070] Although the present invention has been described above with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the invention without departing from the spirit and scope of the invention as described in the following claims. Explanation of the symbols

[0072] 100: Shutter device 110a, 110b: 1st and 2nd shutter guides 120: Shutter 121: Chasuhajang 123: Multiple Slots 125: Hinge member 127: Connecting rubber packing 129: Latch 130: Shutter box 140a, 140b: First and second watertight motors 150: Drive motor 160: Controller 210a: Upper-order intercept 210b: Lower-order intercept 310: Lower protruding rubber packing

Claims

Claim 1 A first watertight motor positioned at a specific side position of a first shutter guide so as to be driven when the bottom edge of a shutter reaches the floor, and generating a watertight motor drive start signal while providing a first contact driving force to press the bottom edge against the floor when the bottom edge reaches the floor, and generating a watertight motor drive stop signal while stopping the first contact driving force when the bottom edge starts from the floor; a second watertight motor that receives the watertight motor drive start signal, provides a second contact driving force, and receives the watertight motor drive stop signal, stops the second contact driving force; A watertight motor for an electric vehicle shutter device, comprising: a controller installed inside or outside the shutter box and configured as an independent device to control the overall operation of the shutter, and when a fire is detected, performing unrolling of the drive motor to cause the shutter to unroll to the outside of the shutter box to close the entrance of the parking lot and fire compartmentalize the parking lot; wherein the first and second watertight motors press against the floor from both sides of the lower watertight section when the shutter descends and the watertight section touches the floor to increase the bonding force with the lower protruding rubber packing inserted into the floor to close the floor together, and the watertight section has a thickness greater than the thickness of the lowest slot among the plurality of slots constituting the shutter, and a latch formed at the end of the lowest slot is coupled to the upper surface, and the lower protruding rubber packing is inserted into the floor to increase watertightness, and is composed of mutually coupled upper and lower watertight sections and the upper and lower watertight sections are coupled with a connecting rubber packing to support the increase in watertightness and rolling or unrolling. Claim 2 An electric vehicle shutter device according to claim 1, characterized in that the first and second watertight motors each provide the first and second close driving forces toward the bottom by connecting the sides of the lower section disposed between the first and second shutter guides. Claim 3 delete Claim 4 delete

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