Electric vehicle battery fire extinguishing device

Abstract

The present invention relates to an electric vehicle battery fire extinguishing device which, when a fire occurs in a battery of an electric vehicle, perforates a battery pack case by positioning a perforation device in the electric vehicle in which the battery is located, and injects a fire extinguishing liquid to immerse a battery module case in the fire extinguishing liquid, thereby suppressing the fire. In addition, the present invention relates to an electric vehicle battery fire extinguishing device, and is for providing an electric vehicle battery fire extinguishing device which can remotely inject a fire extinguishing liquid into a battery pack by stably approaching an electric vehicle, in which a fire is to be extinguished, at a fire site without extensive equipment.

Description

Electric vehicle battery fire extinguishing device

[0001] The present invention relates to an electric vehicle battery fire extinguishing device, and more particularly, to an electric vehicle battery fire extinguishing device capable of remotely injecting fire extinguishing fluid into the battery pack by stably approaching an electric vehicle to be extinguished at a fire scene without large-scale facilities.

[0002] In line with the strengthening of global environmental regulations and the trend toward energy conservation, the development and distribution of eco-friendly electricity production technologies are gradually expanding in each country.

[0003] And even in cars that use internal combustion engines that use gasoline or diesel fuel, the spread of electric cars, which are environmentally friendly energy vehicles, is increasing recently due to the problem of carbon dioxide emitted from internal combustion engines.

[0004] Cases of vehicle fires stemming from batteries, a key component of electric vehicles, are increasing as their adoption grows. These electric vehicle fires can occur during charging and discharging or while driving.

[0005] Specifically, the battery of an electric vehicle uses a lithium-ion battery, and this lithium-ion battery is configured in the form of battery modules electrically connected in series and parallel, housed in a metal case for external shock and moisture resistance, and is installed horizontally on the floor of the vehicle.

[0006] Lithium-ion battery modules in electric vehicles feature a densely packed structure of multiple lithium-ion batteries, often housed within a metal case. Consequently, they generate high temperatures during operation, posing a significant risk of fire.

[0007] These lithium batteries not only pose a significant risk of fire, but also pose a risk of chemical reactions due to the alkali metal's moisture reaction and structural damage in the event of a fire, making them difficult to extinguish with standard powder fire extinguishing agents. In other words, if a single cell experiences thermal runaway within a battery module, a chain reaction can occur in adjacent cells, potentially resulting in a fire.

[0008] Here, the thermal runaway phenomenon of a battery refers to a phenomenon in which the temperature of a battery rises by more than 3 degrees Celsius compared to other batteries within the battery system. When thermal runaway occurs in a battery, the voltage increases, the battery swells, and the temperature of the electrolyte rises to the point of boiling.

[0009] This can eventually cause a fire or explosion of the battery.

[0010] There are various methods for extinguishing fires in lithium batteries, including water-based fire extinguishers, asphyxiating fire covers, and temporary water tanks. However, fires that originate inside the battery housing are extinguished by extinguishing agents injected from outside the battery housing. Therefore, fire extinguishing requires a large amount of extinguishing agent and a long time, making it difficult to extinguish quickly, generating large amounts of toxic gases, and causing an explosion if the battery overheats, spreading the fire to nearby battery modules and vehicles. In addition, fire extinguishing is practically difficult in underground parking lots.

[0011] In other words, batteries using lithium secondary batteries have the potential to ignite or explode due to thermal runaway (1,350℃) of multiple battery modules, and if heat or flames are transmitted to adjacent secondary batteries and secondary ignition or explosion occurs, it can lead to a very serious situation with casualties. Therefore, active development of technologies to prevent such secondary ignition or explosion is being carried out.

[0012] In this way, if a lithium battery fire occurs, there is no way to directly extinguish it. Only measures are available to prevent the spread of the fire. These include water-based methods and suffocating flame-retardant blankets.

[0013] However, because electric vehicle batteries are protected within the vehicle, even if a fire is extinguished using fire extinguishers or water spray, complete battery stabilization remains challenging. Therefore, preventing thermal runaway in electric vehicle batteries is fundamentally required. Furthermore, research and development of firefighting methods capable of extinguishing battery fires early on is essential.

[0014] In addition, when extinguishing a battery fire using water, not only is it difficult to extinguish the fire due to the structure of the battery pack case, but there is also the problem of generating a large amount of toxic gas as the chemical substances in the battery react with water.

[0015] As a result of searching for prior art related to the present invention, no prior art identical or similar to the present invention was found in Korea. The following patent documents were searched as prior art in adjacent technical fields.

[0016] Patent Document 1 discloses a battery case having an injection port for fire suppression in an electric vehicle, which is a device for quickly extinguishing a fire in the battery of an electric vehicle, and which is provided with a battery case to minimize the vehicle's exposure to flames due to thermal runaway when a fire occurs in the battery, an inlet for injecting fire extinguishing fluid or water is provided on the outside of the vehicle, the battery case is provided with a pipe connected to the inlet, and a discharge port is provided on the top of the battery case cover so that when the fire extinguishing fluid or water is injected, the inside of the battery case is completely submerged and the overflowing fire extinguishing fluid or water is discharged, thereby enabling easy, safe, and effective extinguishing of a fire in the battery of the vehicle.

[0017] Patent Document 2 provides a waterproof plate, and at least two lifting tubes having a long shape in the left and right directions are fixedly connected to the front and rear of the upper portion of the waterproof plate, and the lifting tubes are positioned between the front and rear wheels of an electric vehicle, and as air is injected into the lifting tubes to inflate them, the wheels of the electric vehicle are lifted from the floor surface, and in that state, the waterproof plate is spread out on the floor surface with the electric vehicle as the center, so that the electric vehicle can be positioned on the upper portion of the spread waterproof plate, and a frame wall is connected to the upper portion of the spread waterproof plate, and the frame wall has a horizontal fastening part that passes through a hole formed in the center and is connected to the waterproof plate spread out on the floor surface, and a vertical wall that stands upright upward is integrally connected to the outer edge of the horizontal fastening part, and a buoyancy tube is connected to the upper portion of the vertical wall, so that a water tank that contains the electric vehicle is provided by the union of the waterproof plate and the frame wall, and as water is filled into the water tank, the buoyancy tube naturally moves upward according to the water level, and water is continuously filled. As the tank height increases, a cooling tank is being opened to stabilize the batteries of electric vehicles that have caught fire, allowing the batteries to be submerged and stabilized.

[0018] Patent Document 3 provides a waterproof plate so that when the wheels of an electric vehicle are lifted from the floor by a lifting means such as a lifting bag, the waterproof plate can be spread out on the floor with the electric vehicle as the center, and a hole is formed in the center to pass through the electric vehicle and be placed on the upper part of the floor to surround the electric vehicle, thereby forming a temporary wall, and then the waterproof plate is wrapped around the air-injected multi-stage wall tube, so that a tank in the form of containing the electric vehicle is constructed, and the edge portion of the waterproof plate is spread out so that it wraps around the air-injected multi-stage wall tube from the inside to the outside, so that the tank in the form of containing the electric vehicle is constructed by combining the waterproof plate and the air-injected multi-stage wall tube, or before combining the air-injected multi-stage wall tube with the electric vehicle as the center, the waterproof plate is spread out widely on the floor with the electric vehicle as the center, and then the air-injected multi-stage wall tube is placed on the upper part of the waterproof plate so that the waterproof plate is wrapped around the air-injected multi-stage wall tube from the outside to the inside, and in this state, the waterproof plate is wrapped around the air-injected multi-stage wall tube from the outside to the inside. By constructing a tank that can hold an electric vehicle, a cooling tank for stabilizing the battery in the event of an electric vehicle fire is disclosed, which fills the tank with water to submerge the battery of the electric vehicle and stabilize the battery.

[0019] Patent Document 4 discloses a battery module for an electric vehicle for fire prevention, which includes a pad installed between battery packs inside a battery module case, the pad including a fire-resistant means for fire prevention, the fire-resistant means of the pad being formed of a rechargeable plate having a fire-resistant coating agent filled inside, and the fire-resistant coating agent being configured to be filled inside each of a plurality of cells formed inside the rechargeable plate, thereby minimizing damage to the vehicle and preventing casualties due to a battery fire.

[0020] [Prior Art Literature]

[0021] [Patent Document]

[0022] (Patent Document 1) KR 10-2023-0080375 A

[0023] (Patent Document 2) KR 10-2376222 B1

[0024] (Patent Document 3) KR 10-2535537 B1

[0025] (Patent Document 4) KR 10-2581092 B1

[0026] Accordingly, the present invention has been devised to solve the problems of the above-mentioned prior art, and the purpose of the present invention is to provide a battery fire extinguishing device for an electric vehicle that, when a fire occurs in a battery of an electric vehicle, forms a hole in the part where the battery is located and injects fire extinguishing fluid, thereby immersing the battery module case in the fire extinguishing fluid to extinguish the fire.

[0027] In addition, the present invention relates to an electric vehicle battery fire extinguishing device, and is intended to provide an electric vehicle battery fire extinguishing device that can remotely inject fire extinguishing liquid into the battery pack by stably approaching the electric vehicle to be extinguished at a fire scene without large-scale facilities.

[0028] An electric vehicle battery fire extinguishing device according to one embodiment may include a fire extinguishing agent supply unit that supplies fire extinguishing agent, a perforation device that receives the fire extinguishing agent from the fire extinguishing agent supply unit through a fire extinguishing agent supply tube and injects the fire extinguishing agent into a vehicle to be extinguished, a cart that moves the perforation device to a perforation position, a field control unit mounted on the cart that controls the movement of the cart and the operation of the perforation device, and a wireless terminal unit that is wirelessly connected to the field control unit.

[0029] The above-mentioned carriage is connected to an elevator that performs the raising and lowering of the above-mentioned punching device, so that the height can be controlled.

[0030] The above-mentioned bogie includes a first bogie part on which the punching device is mounted, and a second bogie part facing the first bogie part and on which the elevator is mounted, and the relative distance between the first bogie part and the second bogie part can be controlled by the elevator.

[0031] When a direction perpendicular to the up-down direction is referred to as a first direction, and a direction perpendicular to the up-down direction and the first direction is referred to as a second direction, the bogie further includes a first connecting bar and a second connecting bar in the shape of a rod, one end of the first connecting bar is coupled to the first bogie part so as to be rotatable about the first direction as an axis of rotation, the other end of the first connecting bar is coupled to the second bogie part so as to be able to perform a linear sliding reciprocating motion in the second direction, one end of the second connecting bar is coupled to the second bogie part so as to be able to perform a rotational axis about the first direction, and the other end of the second connecting bar is coupled to the first bogie part so as to be able to perform a linear sliding reciprocating motion in the second direction, and the first connecting bar and the second connecting bar can be coupled so as to be able to rotate about the first direction as an axis of rotation.

[0032] The first connecting bar and the second connecting bar are each provided as a pair, and the first connecting bar and the second connecting bar can be arranged to be spaced apart from each other by a certain distance in the first direction.

[0033] The above elevator includes a forward-backward moving bar to which the other end of a pair of the second connecting bars is connected, and an elevator motor that provides power for linearly reciprocating the forward-backward moving bar in the second direction, and the elevator motor can be fixed to the second carriage.

[0034] The above-mentioned bogie further includes a first caterpillar track and a second caterpillar track having the second direction as a longitudinal direction, a first power unit providing power to the first caterpillar track, and a second power unit providing power to the second caterpillar track, wherein the first caterpillar track and the second caterpillar track are coupled to the second bogie, the first caterpillar track and the second caterpillar track are spaced apart from each other by a predetermined distance in the first direction, and the first power unit and the second power unit can receive independent control signals from the field control unit.

[0035] The above-mentioned punching device includes a punching drill that rotates about an axis in the vertical direction and a driving motor that provides driving force to the punching drill, and the punching drill and the driving motor can be supported on the first carriage.

[0036] The above-mentioned punching device further includes a rotation guide portion for guiding the rotational motion of the punching drill, a fixing bracket for fixing the driving motor to the first carriage portion, a gear box for transmitting the power of the driving motor to the rotational motion of the punching drill, and a pressure housing for accommodating the gear box therein, wherein the rotation guide portion and the pressure housing are fixed to the first carriage portion, the rotation guide portion is coupled to the pressure housing such that an upper end thereof protrudes higher than an upper surface of the pressure housing, the extinguishing agent supply tube is connected to the pressure housing, and the extinguishing agent supplied from the extinguishing agent supply portion can be injected into the interior of the vehicle to be extinguished through the internal space of the pressure housing and the rotation guide portion.

[0037] The first bogie part is provided in a plate shape that is perpendicular to the vertical direction, the rotation guide part is coupled to penetrate the first bogie part in the vertical direction, a sealing pad is coupled to the upper end of the rotation guide part, and an absorption pad in a closed loop shape that surrounds the rotation guide part may be provided on the upper surface of the first bogie part.

[0038] An auxiliary lifting means for assisting the lifting power of the elevator may be further provided between the first bogie section and the second bogie section.

[0039] The above auxiliary lifting means may be a hydraulic cylinder.

[0040] An electric vehicle battery extinguishing device according to one embodiment further includes an elevating plate having one end connected to one end of the first bogie section and the other end supported on the ground, and the elevating plate and the first bogie section can be hinge-connected.

[0041] The upper surface of the first bogie and the upper surface of the lifting plate may include a plurality of rollers that support the bottom surface of the vehicle to be extinguished.

[0042] The above field control unit may include a UWB (ultra-wideband) communication module.

[0043] The above-mentioned field control unit is connected to the fire-fighting target vehicle through the UWB communication module to calculate the relative coordinates of the bogie with respect to the fire-fighting target vehicle, and the above-mentioned field control unit can transmit the relative coordinates to a wireless terminal.

[0044] The electric vehicle battery fire extinguishing device of the present invention forms a hole in the case of the electric vehicle battery pack when a fire occurs in the battery of the electric vehicle and injects the fire extinguishing agent supplied from the fire extinguishing agent supply unit, thereby submerging the entire battery module case, thereby having the effect of quickly extinguishing the battery fire.

[0045] The electric vehicle battery fire extinguishing device of the present invention can remotely inject fire extinguishing agent into the battery pack by stably approaching the electric vehicle to be extinguished at a fire scene without large-scale facilities.

[0046] Figure 1 is a schematic diagram showing an electric vehicle battery extinguishing device according to the present invention.

[0047] Figure 2 is a side view of an electric vehicle battery extinguishing device according to the present invention.

[0048] Figure 3 is a configuration diagram showing a punching device of an electric vehicle battery extinguishing device according to the present invention.

[0049] Figure 4 is a schematic diagram showing an elevator of an electric vehicle battery extinguishing device according to the present invention.

[0050] Figure 5 is a diagram showing the state of use of an electric vehicle battery extinguishing device according to the present invention.

[0051] Figure 6 is a schematic diagram showing an electric vehicle battery extinguishing device according to another embodiment of the present invention.

[0052] Fig. 7 is a perspective view showing one embodiment of a bogie of an electric vehicle battery extinguishing device of 6.

[0053] Fig. 8 is a side view showing the operating status of the elevator.

[0054] Figure 9 is a perspective view of a bogie showing the first caterpillar and the second caterpillar without being shown.

[0055] Figure 10 is a cross-sectional view showing the first part.

[0056] Figure 11 is a conceptual diagram showing another embodiment of a bogie.

[0057] Fig. 12 is a side view showing the lifting plate according to Fig. 11.

[0058] Fig. 13 is a plan view showing the first bogie and the lifting plate according to Fig. 11.

[0059] Additional objects, features and advantages of the present invention can be more clearly understood from the following detailed description and accompanying drawings.

[0060] Before going into a detailed description of the present invention, it should be understood that the present invention can be modified in various ways and can have various embodiments, and that the examples described below and illustrated in the drawings are not intended to limit the present invention to specific embodiments, but include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention.

[0061] When it is said that a component is "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components in between. Conversely, when it is said that a component is "directly connected" or "connected" to another component, it should be understood that there are no other components in between.

[0062] The terminology used herein is only used to describe specific embodiments and is not intended to limit the present invention. The singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, it should be understood that the terms "comprises" or "has" specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0063] And the terms "... part", "... unit", "... module", etc. described in the specification mean a unit that processes at least one function or operation, which can be implemented by hardware, software, or a combination of hardware and software.

[0064] In addition, when describing with reference to the attached drawings, identical components will be assigned the same reference numerals regardless of the drawing numbers, and redundant descriptions thereof will be omitted. In describing the present invention, if a detailed description of a related known technology is judged to unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

[0065] In relation to the description of the electric vehicle battery extinguishing device according to the present invention below, it is assumed that the battery is composed of numerous unit cells rather than a single cell, and that these unit cells are gathered to form a module, modules are gathered to form a pack, these packs are gathered to form a rack, and finally, multiple racks are gathered to form a system. In addition, the battery module case is defined to mean a case or housing or outer body in which the unit cells of the battery are accommodated, and the battery pack case is defined to mean a case or housing or outer body in which a plurality of battery modules are accommodated.

[0066] Hereinafter, an electric vehicle battery extinguishing device according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0067] To explain a preferred embodiment of the present invention, FIG. 1 is a schematic diagram illustrating an electric vehicle battery fire extinguishing device according to the present invention, FIG. 2 is a side view of an electric vehicle battery fire extinguishing device according to the present invention, FIG. 3 is a schematic diagram illustrating a punching device of an electric vehicle battery fire extinguishing device according to the present invention, FIG. 4 is a schematic diagram illustrating an elevator of an electric vehicle battery fire extinguishing device according to the present invention, and FIG. 5 is a diagram illustrating a state of use of an electric vehicle battery fire extinguishing device according to the present invention.

[0068] The electric vehicle battery fire extinguishing device according to the present invention comprises a bogie (10), a support (20), a perforation device (30), a fire extinguishing device support (40), an elevator (50), and a fire extinguishing agent supply unit (60), as illustrated in FIGS. 1 to 5. FIGS. 1 to 5 are suitable for extinguishing an electric vehicle, such as an electric bus, in which the battery is positioned at the top.

[0069] The above-mentioned bogie (10) is formed in the shape of a plate with wheels at the bottom, and a part of it is inserted into the bottom of the electric vehicle (100) so that a support (20) is positioned on the side of the electric vehicle (100).

[0070] The above-mentioned support (20) is installed vertically on the cart (10) to fix the fire extinguishing device support (40), and is installed at an eccentric position of the cart (10). At this time, the support (20) may be formed as a single structure to correspond to the height of the electric bus (100), but it is preferable that it is formed as an antenna-shaped structure and expands by hydraulic pressure. In addition, a rack (25) is formed along the vertical direction on the upper side of the support (20), and it is preferable that the rack (25) is formed only at a height corresponding to the movement range of the punching device (30).

[0071] The above-mentioned perforation device (30) perforates a hole in the battery pack case on the upper side of the electric vehicle (100) to inject a fire extinguishing agent. Specifically, as illustrated in FIG. 3, the perforation device (30) comprises a driving motor (31) installed on a fire extinguishing device support (40), and a perforation drill (32) rotated by the driving motor (31) to perforate a hole in the battery cover and battery pack case on the upper side of the vehicle.

[0072] At this time, a extinguishing fluid passage is formed in the driving motor (31) and the perforation drill (32) so that the extinguishing fluid supplied from the extinguishing fluid supply unit (60) can be injected, and it is preferable that the extinguishing fluid passage of the perforation drill (32) is formed in the center.

[0073] The above-mentioned fire extinguishing device support (40) has a structure that extends from the support (20) toward the electric vehicle (100), and has a perforation device (30) provided at one end thereof and the other end thereof movably installed on the support (20). For example, the longitudinal direction of the support (20) may be in the vertical direction, and the longitudinal direction of the fire extinguishing device support (40) may be perpendicular to the vertical direction. In addition, one end of the fire extinguishing device support (40) may be connected to the support (20) so as to be movable in the vertical direction, and the other end may face the upper surface of the electric vehicle (100) in a state in which the perforation device (30) is mounted.

[0074] The above elevator (50) is installed on the fire extinguishing device support (40) and can move together with the fire extinguishing device support (40) in the vertical direction, which is the longitudinal direction of the support (20). That is, the elevator (40) is integrally installed on the fire extinguishing device support (40). This elevator (50) is composed of an elevator motor (51) that provides rotational force as a driving force, and a gearbox that converts the rotational force of the elevator motor (51) into linear driving force for movement in the vertical direction. The gearbox may include, for example, a rack (25) and a pinion (52).

[0075] For example, as shown in FIG. 4, the elevator (50) includes an elevator motor (51) installed on a fire extinguishing device support (40), and a pinion (52) coupled to a rack (25) installed vertically on the upper side of the support (20) and connected to the shaft of the elevator motor (51).

[0076] The method of extinguishing a battery fire in an electric vehicle using the battery fire extinguishing device for an electric vehicle of the present invention configured as described above is described as follows.

[0077] When a battery fire occurs in an electric vehicle (100), the bogie (10) is moved so that the support (20) of the bogie (10) is positioned on the side of the electric vehicle (100). At this time, it is preferable that the fire extinguishing device support (40) installed on the support (20) is positioned on the upper side of the electric vehicle (100), so that the perforation device (30) is positioned above the battery of the electric vehicle (10).

[0078] Next, the elevator motor (51) of the elevator (50) is operated to lower the pinion (52) along the rack (25) of the support (20), thereby bringing the perforation drill (32) of the perforation device (30) provided on the fire extinguishing device support (40) into close contact with the upper side of the electric vehicle (100). Then, the driving motor (31) of the perforation device (30) is operated to rotate the perforation drill (32), thereby causing the perforation drill (32) to perforate a hole in the battery cover and battery pack case provided on the upper side of the electric vehicle (100). Thereafter, the fire extinguishing agent of the fire extinguishing agent supply unit (60) is injected into the battery pack case through the fire extinguishing agent passage of the perforation device (30), thereby submerging all battery module cases located inside the battery pack case with the fire extinguishing agent, thereby extinguishing the fire in the battery.

[0079] When the battery fire is extinguished, the elevator motor (51) of the elevator (50) is operated to rotate the pinion (52) engaged with the rack (25), thereby moving upward the fire extinguishing device support (40) on which the punching device (30) is installed. Then, after moving the cart (10) to the storage position, the hydraulic pressure of the support (20) is removed, thereby reducing the height of the support (20) by several stages and storing it in a warehouse, etc.

[0080] According to another embodiment of the present invention, an electric vehicle battery fire extinguishing device is introduced into a space under the electric vehicle, and a perforation hole is formed in a case under the electric vehicle to inject a fire extinguishing agent through the perforation hole. Here, the electric vehicle battery fire extinguishing device may be basically similar to the electric vehicle battery fire extinguishing device described with reference to FIGS. 1 to 5. That is, it may include a cart (10), wheels, a perforation device (30), and an elevator (50). However, since it is located at the bottom rather than the top of the electric vehicle, a support (20), a support (40), etc. may be omitted. However, since this is a point of change formed depending on the location, the core feature of the present invention, which is to form a perforation in the case and inject the fire extinguishing agent, corresponds to both.

[0081] Hereinafter, the differences between the electric vehicle battery extinguishing device and those described with reference to FIGS. 1 to 5 will be described. In the following description, the direction perpendicular to the vertical direction is referred to as the first direction, and the direction perpendicular to both the vertical direction and the first direction is referred to as the second direction.

[0082] Hereinafter, with reference to FIGS. 6 to 13, a detailed description will be given of an electric vehicle battery fire extinguishing device according to another embodiment. FIG. 6 is a block diagram illustrating an electric vehicle battery fire extinguishing device according to another embodiment of the present invention, FIG. 7 is a perspective view illustrating an embodiment of a bogie (10) of the electric vehicle battery fire extinguishing device of FIG. 6, FIG. 8 is a side view illustrating an operating state of an elevator (50), FIG. 9 is a perspective view of a bogie (10) in which a first caterpillar (15a) and a second caterpillar (15b) are not illustrated, FIG. 10 is a cross-sectional view illustrating a first bogie part (11), and FIG. 11 is a conceptual diagram illustrating another embodiment of the bogie (10), FIG. 12 is a side view illustrating an elevator plate (19) according to FIG. 11, and FIG. 13 is a plan view illustrating the first bogie part (11) and the elevator plate (19) according to FIG. 11.

[0083] The fire-extinguishing vehicle (T) depicted in Fig. 6 may only schematically depict the underbody frame of an electric vehicle. As shown in Fig. 6, since the battery is a component that accounts for a relatively large portion of the vehicle's load, many types of electric vehicles have the battery installed under the vehicle. Therefore, perforating the vehicle's underbody to inject extinguishing fluid can be a highly effective fire-extinguishing measure.

[0084] As shown in FIGS. 6 and 7, specifically in another embodiment, the electric vehicle battery fire extinguishing device of the present invention may include a fire extinguishing agent supply unit (60), a punching device (30), a cart (10), a field control unit, and a wireless terminal unit (80).

[0085] The extinguishing agent supply unit (60) may be configured to supply extinguishing fluid. For example, the extinguishing agent supply unit (60) may be a pressure tank. The extinguishing agent supply unit (60) may be configured to supply liquid extinguishing agent. In another embodiment, if the extinguishing agent supply unit (60) supplies the extinguishing agent in a gaseous state, the extinguishing agent supply unit (60) may be configured as a gas cylinder, etc.

[0086] As illustrated in Fig. 6, the extinguishing agent supply unit (60) may be positioned at a point sufficiently spaced from the bogie (10) and the vehicle to be extinguished (T). That is, it may be positioned at a location away from the fire scene. The extinguishing agent supply unit (60) may inject the extinguishing agent into the vehicle to be extinguished (T) through the perforation device (30) mounted on the bogie (10). An extinguishing agent supply tube (61) may be connected as a path between the extinguishing agent supply unit (60) and the perforation device (30). The extinguishing agent supply tube (61) may be provided with a sufficient length in consideration of the distance between the fire scene and the extinguishing agent supply unit (60).

[0087] The extinguishing fluid supply tube (61) may be made of a flexible material so as not to impede the movement of the cart (10), and may be made of a heat-resistant and chemical-resistant material so as not to deteriorate at the scene of a fire. For example, the extinguishing fluid supply tube (61) may be a Teflon tube.

[0088] The cart (10) can function to move the punching device (30) to the punching position. Here, the punching position can mean a point that faces the space where the fire extinguishing agent is injected in the vertical direction. The cart (10) can perform the function of moving the position of the punching device (30), specifically the punching drill (32), to be positioned precisely at the center of the space where the fire extinguishing agent is injected.

[0089] The target area for extinguishing agent injection is an area within the firefighting vehicle (T) where thermal runaway has occurred and may require extinguishing agent injection. This target area for extinguishing agent injection can be identified through information received from the firefighting vehicle (T) or data obtained by infrared imaging of the firefighting vehicle (T).

[0090] According to the structure described below, the electric vehicle battery extinguishing device of the present invention can move stably even on relatively slippery flooring made of materials such as epoxy in parking lots. After moving, it maintains a firm position in the correct location, enabling effective drilling operations.

[0091] Furthermore, the electric vehicle battery extinguishing device of the present invention features a compact, small structure, allowing easy entry into the underbody of the vehicle. However, during drilling, it maintains a firm positioning, ensuring accurate drilling and stable injection of the extinguishing agent.

[0092] As illustrated in Fig. 7, the bogie (10) may include a first bogie section (11) and a second bogie section (12). For example, the first bogie section (11) and the second bogie section (12) may be provided in a plate shape that is perpendicular to the vertical direction. The first bogie section (11) and the second bogie section (12) may be arranged to face each other.

[0093] As illustrated in FIGS. 7 to 9, the second bogie (12) may be equipped with an elevator (50). The relative distance between the first bogie (11) and the second bogie (12) may be controlled by the elevator (50). Specifically, the vertical distance between the first bogie (11) and the second bogie (12) may be adjusted by the elevator (50). That is, the electric vehicle battery extinguishing device of the present invention may be connected to the elevator (50) that performs the raising and lowering of the punching device (30) so that the height may be controlled.

[0094] An elevator (50) may include an elevator motor (51) that provides rotational force as a driving force for elevation, and a power transmission structure that converts the rotational force of the elevator motor into force for adjusting the relative distance between the first carriage (11) and the second carriage (12).

[0095] The power transmission structure that changes the direction of the force may include a first connecting bar (53), a second connecting bar (54), and a forward / backward moving bar (50). If the power transmission structure is positioned on the main body frame of the second carriage unit (12), there may be insufficient space for arranging the elevation motor (51). At this time, the second carriage unit (12) may be provided with an extension frame (14), and the elevation motor (51) may be fixed to the extension frame (14). Specifically, the main body and the extension frame (14) of the second carriage unit (12) are provided in a plate shape perpendicular to the vertical direction, and the extension frame (14) may be formed by protruding and extending from one end of the main body of the second carriage unit (12) in the first direction or the second direction. The elevation motor (51) may be fixed to the extension frame (14), but may also be mounted directly to the main body of the second carriage unit (12) without the extension frame (14).

[0096] The bogie (10) may further include a first connecting bar (53) and a second connecting bar (54). That is, the first connecting bar (53) and the second connecting bar (54) may be provided. As shown in Fig. 8, one end of the first connecting bar (53) may be rotatably coupled to the first bogie part (11) about the first direction as the rotation axis. In addition, the other end of the first connecting bar (53) may be coupled to the second bogie part (12) so as to enable linear sliding movement (sliding) in the second direction.

[0097] That is, the upper part of the first connecting bar (53) can be rotatably connected to the first bogie part (11) with the first direction as the rotation axis, and the lower part can be connected to the second bogie part (12) so as to be able to linearly slide in the second direction.

[0098] In FIGS. 7 to 9, the second direction may refer to the front-back direction of the bogie (10), and the first direction may refer to the left-right (side) direction of the bogie (10). FIG. 8 shows an example in which the first connecting bar (53) is coupled to be rotatable in the first direction and slidable in the second direction, but this means that the present invention is not limited thereto.

[0099] As illustrated in Fig. 8, one end of the second connecting bar (54) can be rotatably coupled to the second bogie part (12) with the first direction as the rotation axis. In addition, the other end of the second connecting bar (54) can be coupled to the first bogie part (11) so as to enable linear sliding in the second direction.

[0100] That is, the upper part of the second connecting bar (54) can be linearly slidably connected to the first bogie part (11) in the second direction, and the lower part can be rotatably connected to the second bogie part (12) with the first direction as the rotation axis.

[0101] The second connecting bar (54) is shown as an example in FIG. 8 as being rotatably coupled in the first direction and slidably coupled in the second direction, but this means that the configuration of the present invention is not limited thereto.

[0102] The upper end of the first connecting bar (53) and the lower end of the second connecting bar (54) may be positioned at the same position in the second direction. In addition, the first connecting bar (53) and the second connecting bar (54) may be designed to have the same length. Due to this configuration, the centers of the first connecting bar (53) and the second connecting bar (54) may intersect.

[0103] At this time, the first connecting bar (53) and the second connecting bar (54) can be rotatably connected with the first direction as the rotation axis at the intersection center point.

[0104] A first connecting bar (53) and a second connecting bar (54) are provided in pairs, and each of the first connecting bar (53) and the second connecting bar (54) can be arranged to be spaced apart from each other by a certain distance in the first direction. Preferably, a pair of the first connecting bar (53) and the second connecting bar (54) can be connected to each of the two ends of the first bogie part (11) and the second bogie part (12) in the first direction.

[0105] Due to the structure of the first connecting bar (53) and the second connecting bar (54) described above, the first bogie part (11) and the second bogie part (12) are connected, and the distance in the vertical direction can be easily adjusted, and at the same time, a sturdy structure can be formed in which the two bogie parts (11, 12) are relatively not twisted with the vertical direction as the rotation axis.

[0106] Accordingly, the support force received by the second bogie (12) from the ground is stably transmitted to the first bogie (11), and through this, the drilling device (30) installed in the first bogie (11) can perform drilling work without shaking.

[0107] As shown in FIGS. 7 and 8, the elevator (50) may include a forward / backward moving bar (55) and an elevator motor (51).

[0108] The forward / backward movement bar (55) may have both ends connected to the other ends of a pair of second connecting bars (54). That is, both ends of the forward / backward movement bar (55) may be connected to the lower ends of the second connecting bars (54), respectively. The forward / backward movement bar (55) may be coupled to the second connecting bar (54) so ​​as to be rotatable about the first direction as an axis of rotation when coupled to the second connecting bar. The forward / backward movement bar (55) may move in parallel along the surface of the second carriage (12). More specifically, it performs a linear reciprocating motion in the second direction on the upper surface of the second carriage (12), and accordingly, the first carriage (11) may be raised or lowered in the vertical direction.

[0109] The lifting motor (51) can provide power to linearly reciprocate the forward-backward movement bar (55) in the second direction. The main body of the lifting motor (51) can be fixed to the second carriage part (12). For example, the lifting motor (51) can provide power through rotational force. A hole penetrating in the second direction can be formed in the forward-backward movement bar (55), and a screw thread can be formed in the hole. The lifting motor (51) can provide power to a rotational shaft having the second direction as the longitudinal direction. The rotational shaft also has a screw thread formed on the outer surface and is screw-connected with a hole formed in the forward-backward movement bar (55), so that the forward-backward movement bar (55) can move forward and backward according to the rotation of the rotational shaft.

[0110] As illustrated in Fig. 7, the bogie (10) may include a first caterpillar (15a) and a second caterpillar (15b) having the second direction as the longitudinal direction.

[0111] As illustrated in Fig. 7, the first caterpillar (15a) and the second caterpillar (15b) are coupled to the second bogie (12), and the first caterpillar (15a) and the second caterpillar (15b) can be spaced apart from each other by a certain distance in the first direction. Preferably, the first caterpillar (15a) can be coupled to one end of the second bogie (12) in the first direction, and the second caterpillar (15b) can be coupled to the other end of the second bogie (12) in the first direction.

[0112] The belts of the first caterpillar track (15a) and the second caterpillar track (15b) may be made of rubber to prevent slipping on the epoxy material parking lot floor where a water film or the like has formed. For example, the belts of the first caterpillar track (15a) and the second caterpillar track (15b) may be made of EVA material. A plurality of protrusions or wrinkles may be formed on the surfaces of the belts of the first caterpillar track (15a) and the second caterpillar track (15b) to improve ground contact.

[0113] The first caterpillar track (15a) and the second caterpillar track (15b) can be controlled by independent control signals. The bogie (10) may further include a first power unit (15c) that provides power to the first caterpillar track (15a) and a second power unit (15d) that provides power to the second caterpillar track (15b). The first power unit (15c) and the second power unit (15d) can receive independent control signals from the field control unit. The first power unit (15c) and the second power unit (15d) may be electric motors, etc.

[0114] As shown in FIGS. 9 and 10, the punching device (30) may include a punching drill (32) that rotates about an axis of rotation in the up-down direction, and a driving motor (31) that provides driving force to the punching drill (32).

[0115] The perforation drill (32) may form a passage to a space (not shown) for extinguishing agent injection inside the vehicle (T) by perforating the lower plate of the vehicle (T) to be extinguished. That is, the upper part of the perforation drill (32) can enter the space for extinguishing agent injection through drilling. The space for extinguishing agent injection may be a space where thermal runaway has occurred inside the vehicle (T) to be extinguished and where extinguishing agent injection is required. The space for extinguishing agent injection can be identified by information received from the vehicle (T) to be extinguished or data obtained by photographing the vehicle (T) to be extinguished with infrared light.

[0116] The punching drill (32) can be provided in the shape of a rod with the vertical direction as the length direction.

[0117] The driving motor (31) may provide rotational power to the perforating drill (32) with the vertical rotation axis as the driving motor. The driving motor (31) may transmit rotational power to the perforating drill (32) through a gearbox (37). For example, the gearbox (37) may be equipped with a bevel gear. The gearbox (37) may be formed with a sealed structure.

[0118] The cart (10) may move the punching device (30) to a punching position. The punching position may be a position facing the space to be injected with the fire extinguishing agent in the vertical direction as described above. The cart (10) may move the position of the punching device (30), or more precisely, the punching drill (32), so that it can be positioned at the center of the space to be injected with the fire extinguishing agent.

[0119] The electric vehicle battery extinguishing device of the present invention can move stably on a floor material such as epoxy in a parking lot where a relatively slippery water film is formed, and after moving, it can perform a punching operation in a firm position at the correct location.

[0120] The electric vehicle battery fire extinguishing device of the present invention has a small and compact structure that allows it to easily enter the lower part of a vehicle, but maintains a firm position when punching, thereby performing the punching and even injecting the fire extinguishing agent.

[0121] As shown in Fig. 10, the punching device (30) may further include a rotation guide part (17), a fixed bracket, and the gear box (37) described above.

[0122] The rotation guide part (17) can guide the rotational movement of the punching drill (32). The rotation guide part (17) can be formed in a tubular shape with the vertical direction as the longitudinal direction. The rotation guide part (17) can be combined with the first carriage part (11) in a shape that vertically penetrates the first carriage part (11). The punching drill (32) can stably perform an up-and-down movement by protruding toward the upper surface of the first carriage part (11) through the rotation guide part (17).

[0123] The fixed bracket (16) can fix the driving motor (31) to the first bogie (11). If the area of ​​the first bogie (11) is formed relatively narrow, the installation area of ​​the driving motor (31) may be insufficient. The fixed bracket (16) may be coupled to the first bogie (11) to secure the installation area of ​​the driving motor (31).

[0124] The gearbox (37) may transmit the power of the driving motor (31) to the drill (32). The gearbox (37) may have a bevel gear or the like inside, as described above. The gearbox (37) may be sealed in a sealed container.

[0125] The pressure housing (13) can accommodate a gearbox (37) therein. The pressure housing (13) can be coupled to the bottom surface of the first bogie (11). The lower end of the rotation guide (17) can be located inside the pressure housing (13). A space exists between the outer surface of the gearbox (37) and the inner surface of the pressure housing (13), and the lower end of the rotation guide (17) can be located in the space. Specifically, the rotation guide (17) can be coupled to the pressure housing (13) and the first bogie so that the upper end protrudes higher than the upper surface of the pressure housing (13) and the upper surface of the first bogie (11).

[0126] The extinguishing agent supply tube (61) can be connected to the pressure housing (13). Specifically, the extinguishing agent supply tube (61) can be connected to the pressure housing (13) so that the extinguishing agent can be injected into the space formed between the outer surface of the gear box (37) described above and the inner surface of the pressure housing (13). The electric vehicle battery extinguishing device of the present invention can inject the extinguishing agent by forming a perforation hole for injecting the extinguishing agent into the bottom surface of the vehicle (T) to be extinguished by the perforation drill (32), and then bringing the rotation guide part (17) into close contact with the perforation hole and injecting the extinguishing agent through the rotation guide part (17). At this time, the extinguishing agent filled in the pressure housing (13) through the extinguishing agent supply tube (61) can be injected into the extinguishing agent injection target space inside the vehicle (T) to be extinguished. That is, the digestive fluid can move from the inside of the pressure housing (13) to the inside of the vehicle (T) to be extinguished through the space formed between the inner surface of the rotary guide part (17) and the outer surface of the punching drill (32).

[0127] As illustrated in Fig. 10, a sealing pad (17a) may be provided at the upper end of the rotation guide portion (17). The sealing pad (17a) may be provided in a ring shape. The sealing pad (17a) is provided with an elastic material and can prevent leakage of the extinguishing agent when the extinguishing agent is injected.

[0128] The upper surface of the first bogie (11) may be provided with a closed-loop shaped absorbent pad (11a) surrounding the rotation guide portion (17). The absorbent pad (11a) may be made of a material capable of absorbing a fluid such as a gas or liquid. The absorbent pad (11a) may absorb gas or electrolyte generated inside the secondary battery that may be discharged through a perforated hole. Since the gas or electrolyte generated inside the secondary battery is prevented from diffusing into the atmosphere through the absorbent pad (11a), secondary spread of fire can be prevented.

[0129] The absorbent pad (11a) may be made of an elastic material that is easy to contract or expand. The absorbent pad (11a) may be completely adhered to the bottom of the vehicle (T) to be extinguished.

[0130] For example, the absorption pad (11a) may be provided in a rectangular frame shape and adhered along the edge of the upper surface of the first bogie part (11). The thickness of the absorption pad (11a) may be formed to be thicker than the length by which the rotation guide part (17) protrudes from the upper surface of the first bogie part (11).

[0131] As illustrated in FIGS. 7 to 9, an auxiliary lifting means (57) may be further provided between the first bogie (11) and the second bogie (12) to assist the lifting power of the elevator (50). The auxiliary lifting means (57) may be provided in a cylindrical shape with the vertical direction as the longitudinal direction. For example, the auxiliary lifting means (57) may be a hydraulic cylinder. A plurality of auxiliary lifting means (57) may be provided.

[0132] In one embodiment, the auxiliary lifting means (57) can be operated when the bogie (10) reaches the punching position. Upon reaching the punching position, the auxiliary lifting means (57) can further strengthen the force that separates the first bogie part (11) and the second bogie part (12), thereby enabling the punching drill (32) to operate more stably. In addition, when injecting the extinguishing agent, the rotation guide part (17) can be completely pressed against the inlet of the punching hole, thereby enabling the injection to be performed without leakage.

[0133] In another embodiment, the auxiliary lifting means (57) may be operated when an abnormal distance between the fire fighting vehicle (T) and the ground is detected. Hereinafter, with reference to FIGS. 11 to 13, an embodiment of a bogie (10) provided for a fire fighting vehicle having an abnormal incline using the auxiliary lifting means (57) will be described.

[0134] As illustrated in FIGS. 11 and 13, the bogie (10) may further include an elevating plate (19) having one end connected to one end of the first bogie section (11) and the other end supported on the ground. The elevating plate (19) and the first bogie section (11) may be hinge-coupled. Specifically, the elevating plate (19) and the first bogie section (11) may be hinge-coupled so as to be rotatable about a first direction as a rotational axis.

[0135] The upper surface of the first bogie (11) and the upper surface of the lifting plate (19) may include a plurality of rollers (11c, 11d, 19c, 19d) that support the bottom surface of the vehicle (T) to be extinguished.

[0136] When the gap between the bottom of the fire extinguishing vehicle (T) and the ground is narrow, the end of the lifting plate (19) enters first, and as the bogie (10) is pushed in, the fire extinguishing vehicle (T) is lifted upward, and the bogie (10) can enter the lower part of the fire extinguishing vehicle (T). At this time, if friction occurs between the upper surface of the plurality of roller (11c, 11d, 19c, 19d) lifting plate (19) or the upper surface of the first bogie part (11) and the bottom surface of the fire extinguishing vehicle (T), entry can be prevented from being obstructed.

[0137] As shown in Fig. 12, the lifting plate (19) may include a base plate (19a) and a center frame (19b).

[0138] The bottom plate (19a) may be provided with one end hingedly connected to the first bogie part (11) in the second direction, and the other end gradually becoming thinner.

[0139] The center frame (19b) can be coupled to the upper surface of the base plate (19a) with the second direction being the longitudinal direction. A plurality of axes for coupling a plurality of rollers (19c, 19d) can be formed on both sides of the center frame (19b) in the first direction. By forming the lifting plate (19) with a double vertical plate structure, a structure with high rigidity is formed with a small load.

[0140] The length in the second direction of the center frame (19b) may be formed to be longer than the length in the second direction of the bottom plate (19a). The thickness t1 of the center frame (19b) on the ground side may be formed to be smaller than the diameter (R) of the rollers (19c, 19d). The sum t2 of the thicknesses of the center frame (19b) and the bottom plate (19a) on the first bogie (11) side may be larger than half the sum (R+D) of the diameters of the rollers (19c, 19d) and the thickness of the first bogie (11), and may be equal to or smaller than the sum (R+D) of the diameters of the rollers (19c, 19d) and the thickness of the first bogie (11). By forming the thickness as described above, the lifting plate (19) may have a minimum rigidity capable of supporting the target vehicle (T) and may not cause the device to become excessively large.

[0141] A plurality of rollers (11c, 11d, 19c, 19d) may be arranged symmetrically with respect to the second direction. When the bogie (10) rotates, the rollers (11c, 11d, 19c, 19d) may be divided into two with respect to the first direction so that the bogie (10) is not obstructed by the rollers (11c, 11d, 19c, 19d).

[0142] The field control unit may be a computing device mounted on the bogie (10) that controls the movement of the bogie (10) and the operation of the punching device (30). The field control unit may be a computing device that controls one or more of the elevator motor (51) of the elevator (50), the auxiliary elevator means (57), the drive motor (31) of the punching device (30), the first power unit (15c), and the second power unit (15d).

[0143] The field control unit is equipped with a communication module and can be connected to a wireless terminal unit (80).

[0144] The wireless terminal (80) may be a portable communication device. For example, it may be a mobile phone, a smart device, a tablet PC, etc. The user can remotely control the cart (10) and the punching device (30) mounted on the cart (10) via the wireless terminal (80).

[0145] The communication module mounted on the field control unit may be a communication module for wireless communication. For example, it may be HSDPA, HSUPA, HSPA+, TD-HSDPA, TD-HSUPA, EV-DO rev. AB, EV-DO rev. C, LTE / TDD, LTE Advanced, LTE-U, WiBro, Mobile WiMAX, WiBro Evolution, NR, Bluetooth, Wi-Fi, etc.

[0146] The field control unit may include an ultra-wideband (UWB) communication module. The electric battery fire extinguishing device of the present invention can receive a log from the fire target vehicle (T) up to the fire occurrence event. In addition, it can receive a map of the battery pack from the fire target vehicle (T). In addition, if the UWB communication module of the fire target vehicle (T) is alive, it can pair with the UWB communication module of the fire target vehicle (T) to calculate the position of the bogie (10) and the coordinates of the battery pack.

[0147] The next step is to identify the problematic battery module through the log from the fire target vehicle (T) to the fire occurrence event, and to identify the battery module in the battery pack to identify the punching location.

[0148] That is, the field control unit can communicate with the fire extinguishing target vehicle (T) through the UWB communication module to calculate the relative coordinates of the bogie (10) with respect to the fire extinguishing target vehicle (T), and the field control unit can transmit the relative coordinates to the wireless terminal (80).

[0149] At this time, the user can choose whether to automatically move the cart (10) or manually control it to the punching position.

[0150] A gas detection sensor (not shown) may be mounted on the bogie (10). The gas detection sensor can detect gas generated within the secondary battery or gas generated during a fire. When the gas detection sensor detects gas, a detection signal can be transmitted to the on-site control unit. Upon receiving the signal, the on-site control unit can transmit an alarm to the wireless terminal unit (80). In addition, the on-site control unit can automatically command the movement of the bogie (10) at the same time as the alarm is transmitted to attempt to approach the fire-extinguishing target vehicle (T), thereby shortening the time required for extinguishing the fire.

[0151] The embodiments described in this specification and the attached drawings are merely illustrative of some of the technical concepts included in the present invention. Therefore, the embodiments disclosed in this specification are intended to explain rather than limit the technical concepts of the present invention, and it is obvious that the scope of the technical concepts of the present invention is not limited by these embodiments. All modifications and specific embodiments that can be easily inferred by those skilled in the art within the scope of the technical concepts included in the specification and drawings of the present invention should be construed as being included within the scope of the rights of the present invention.

[0152] [Explanation of symbols]

[0153] 10...car

[0154] 11...1st loan department

[0155] 11a...absorbent pad

[0156] 11c, 11d, 19c, 19d...roller

[0157] 12...Second Loan Department

[0158] 13...Pressure housing

[0159] 14... extended frame

[0160] 15a...First caterpillar track

[0161] 15b...Second caterpillar orbit

[0162] 15c...1st power unit

[0163] 15d...Second power unit

[0164] 16...Fixed bracket

[0165] 17...Rotating guide part

[0166] 17a...Sealing pad

[0167] 19...elevating plate

[0168] 19a...bottom

[0169] 19b...center frame

[0170] 20...landlord

[0171] 25...rack

[0172] 30...perforation device

[0173] 31...Drive motor

[0174] 32...perforation drill

[0175] 37...gearbox

[0176] 40...Fire extinguisher support

[0177] 50...elevator

[0178] 51... Elevator motor

[0179] 52...pinion

[0180] 53...First connecting bar

[0181] 54...Second connecting bar

[0182] 55... Forward and backward movement bar

[0183] 57...Auxiliary lifting means

[0184] 60... Digestive system supply unit

[0185] 61...Digestive fluid supply tube

[0186] 80...wireless terminal

[0187] T...vehicles to be extinguished

[0188]

[0189] The electric vehicle battery fire extinguishing device of the present invention can quickly and effectively extinguish a fire by forming a hole in a battery pack case and injecting a fire extinguishing agent supplied from a fire extinguishing agent supply unit, thereby submerging the entire battery module case, when a fire occurs in an electric vehicle battery.

[0190] In addition, the fire extinguishing device of the present invention can stably approach an electric vehicle to be extinguished at a fire scene without the need for large-scale fixed facilities, and can remotely inject extinguishing liquid into the battery, thereby achieving high initial suppression efficiency. In addition, the burden on the structure or equipment is small, so it can be operated in conjunction with mobile equipment or existing fire infrastructure, and thus has high commercial utility value.

[0191] In particular, as a fire extinguishing technology specialized for responding to electric vehicle fires, it has the versatility to be applied to various vehicle models, and as the electric vehicle market expands, its commercial potential in the related safety equipment and service markets is very high.

Claims

1. Digestive agent supply unit that supplies digestive fluid; A perforation device that receives the extinguishing agent from the extinguishing agent supply unit through the extinguishing agent supply tube and injects it into the vehicle to be extinguished; A carriage for moving the above punching device to the punching position; A field control unit mounted on the above-mentioned cart and controlling the movement of the cart and the operation of the punching device; and A wireless terminal unit that communicates with the above-mentioned field control unit via wireless communication An electric vehicle battery extinguishing device including:

2. In paragraph 1, The above car is, Connected to an elevator that performs the raising and lowering of the above-mentioned punching device so that the height can be controlled An electric vehicle battery extinguishing device featuring:

3. In paragraph 2, The above car is, The first bogie part on which the above punching device is mounted, It includes a second bogie section facing the first bogie section and having the elevator mounted thereon, The relative distance between the first bogie and the second bogie is controlled by the elevator. An electric vehicle battery extinguishing device featuring:

4. In paragraph 3, The direction perpendicular to the up-down direction is called the first direction, When the direction perpendicular to the vertical direction and the first direction is called the second direction, The above bogie further includes a first connecting bar and a second connecting bar in the shape of a rod, One end of the first connecting bar is connected to the first bogie so as to be rotatable about the first direction as the rotation axis, The other end of the first connecting bar is connected to the second bogie so as to enable linear sliding reciprocating motion in the second direction, One end of the second connecting bar is connected to the second bogie so as to be rotatable about the first direction as the rotation axis, The other end of the second connecting bar is connected to the first bogie so as to enable linear sliding reciprocating motion in the second direction, The first connecting bar and the second connecting bar are connected so that the center point can rotate in the first direction as the rotation axis. An electric vehicle battery extinguishing device featuring:

5. In paragraph 4, The first connecting bar and the second connecting bar are each provided as a pair, The first connecting bar and the second connecting bar are each arranged at a certain distance apart from each other in the first direction. An electric vehicle battery extinguishing device featuring:

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