Electric vehicle battery case that can be extinguished during Golden Time

Abstract

The present invention relates to a battery case for an electric vehicle capable of extinguishing a fire within a golden time (2 to 3 minutes), and more specifically, to a new type of battery case for an electric vehicle capable of extinguishing a fire within a golden time, in which one-touch coupler plugs are connected to the outer sides of the case, front, back, left, and right, respectively, so as to be exposed to the outside of the vehicle body, and a fire extinguishing agent is rapidly injected into the battery case within a golden time (2 to 3 minutes) to extinguish the fire when a battery fire occurs.

Description

Technology Field

[0001] The present invention relates to a battery case for an electric vehicle capable of extinguishing a fire within a golden time (2 to 5 minutes), and more specifically, to a new type of battery case for an electric vehicle capable of extinguishing a fire within a golden time, wherein one or more one-touch coupler plugs are connected to the outer sides of the case, front, back, left, and right, which accommodate a battery pack including a lithium-ion battery pack installed in an electric vehicle, and are exposed to the outside of the vehicle body, thereby allowing a fire extinguishing agent to be rapidly injected into the battery case within a golden time to extinguish the fire when a battery fire occurs. Background Technology

[0003] Generally, electric vehicles include a battery installation space with a sealed structure on the floor plate of the vehicle body, and 10 to 30 battery cells are modularized in this battery installation space, with 6 to 12 modules installed in one pack.

[0004] In such electric vehicles, if the battery, particularly a lithium-ion battery, catches fire due to an accident or various other reasons, fire suppression is extremely difficult because the high heat point temperature of the battery cells and their high-density integration cause continuous heat transfer, leading to thermal runaway and re-ignition.

[0005] In other words, once an electric vehicle battery catches fire, it can easily reignite before it is completely burned, so a large amount of water must be poured continuously for a long time. However, pouring a large amount of water into a battery located in a sealed space on the floor of an electric vehicle is technically very difficult without the support of fire hydrants or fire trucks.

[0006] Moreover, while it is ideal to extinguish a fire in a battery within the Golden Time of 2 to 5 minutes after the fire occurs, before thermal runaway occurs, in reality, the probability of a fire truck arriving within 10 minutes is very low at less than 5%, and especially in spaces with height restrictions such as underground parking lots, entry is impossible, so the fire in the underground parking lot spreads to almost all vehicles, resulting in the entire parking lot being completely burned.

[0007] In addition, even if fire trucks arrive at the scene of a fire quickly, the preparation process to suppress the fire takes approximately 30 minutes or more, which effectively causes the golden time to be missed, resulting in a problem where the loss of vehicles due to the fire reaches the level of totaling the vehicle.

[0008] A battery fire suppression device for electric vehicles, patented under Patent Registration No. 10-2713586 (Registration Date: September 30, 2024), which is a technology for minimizing damage caused by a fire related to the battery as described above, comprises a base frame (110), a lifting platform (120) located on the upper side of the base frame (110), and a lifting mechanism (130) for lifting the lifting platform (120) relative to the base frame (110); a height-adjustable stand (100) positioned below the vehicle body floor plate (22) in the event of a fire; and a first hole BN cutter (260) installed on the lifting platform (120) and rotating by fire extinguishing liquid supplied through a fire extinguishing liquid inlet part (102) connected to an external conduit, thereby perforating the vehicle body floor plate (22) to form an injection port communicating with the battery installation space, and the fire extinguishing liquid supplied through the fire extinguishing liquid inlet part (102) is the first The invention is characterized by comprising a fire extinguishing liquid injection unit (200) that injects into the battery installation space through a hole cutter (260), and a discharge port forming unit (400) that is installed on the lifting platform (120) and forms a discharge port for gas or fire extinguishing liquid discharged from the battery installation space by perforating the vehicle body floor plate (22) with a second hole cutter (460) that rotates in conjunction with the rotation of the first hole cutter (260).

[0009] However, the electric vehicle battery fire suppression device configured as described above is designed to suppress a fire by spraying a fire extinguishing agent while positioned close to the electric vehicle where the fire has occurred and positioned at the location of the fire. This requires a massive amount of water and extinguishing fluid with the support of fire hydrants or fire trucks, and in most cases, the fire cannot be suppressed quickly due to the loss of the golden time, resulting in the vehicle being reduced to the level of being scrapped. Prior art literature

[0011] Registered Patent Publication No. 10-2713586 (Registration Date: September 30, 2024) "Battery Fire Suppression Device for Electric Vehicles" The problem to be solved

[0012] The present invention aims to solve the problems described above. The objective of the present invention is to provide an electric vehicle battery case capable of extinguishing a fire within the golden time, which prevents casualties and minimizes property damage caused by a battery fire, by forming a case capable of enclosing and housing an electric battery for a vehicle and forming coupler plugs in four directions (front, back, left, and right) capable of spraying a fire extinguishing agent into the interior of the case, thereby enabling rapid fire suppression by simultaneously performing suffocation and cooling due to oxygen deficiency before thermal runaway of the battery when a fire occurs in the battery within the golden time (2 to 5 minutes) through the agent inflow path via the coupler plugs, thereby preventing casualties and minimizing property damage caused by the battery fire.

[0013] Another objective of the present invention is to provide a battery case for an electric vehicle capable of extinguishing a fire within the golden time, which can greatly improve the safety of fire suppression operations, by having a coupler plug connected to the case formed in four directions (front, back, left, and right) of the case, allowing a fire extinguishing agent to be injected at the safest location of the vehicle where the fire has occurred.

[0014] Another objective of the present invention is to provide a battery case for an electric vehicle capable of extinguishing a fire within the golden time, which enables rapid fire suppression by allowing the fire extinguishing agent to be injected directly into the battery module within the golden time for fire suppression through a coupler plug (agent inlet) that allows for quick connection and disconnection of the fire extinguishing agent from the outside in a one-touch manner, thereby enabling initial fire suppression, and at the same time, through quick and accurate connection, the fire extinguishing agent can be efficiently injected 100% into the battery where the fire has occurred without leakage to the outside, allowing for efficient use of the fire extinguishing agent without waste, and enabling rapid fire suppression.

[0015] Another objective of the present invention is to provide an electric vehicle battery case capable of extinguishing a fire within the golden time, which enables rapid fire suppression and minimizes surrounding damage caused by the fire, by spraying a fire extinguishing agent into the battery in the form of foam to fill the inside of the case with foam and extinguishing the fire by suffocation.

[0016] The problems that the present invention aims to solve are not limited to the technical problems mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which the present invention belongs from the description below. means of solving the problem

[0018] A battery case for an electric vehicle capable of extinguishing fires within a golden time according to one embodiment of the technical concept of the present invention for achieving the above objective comprises: a case body formed in the shape of an enclosure in which a receiving space for accommodating a battery module is formed inside and the edges of an upper case and a lower case are fastened with bolts and nuts; four agent inlet pipes, one end of which is connected to the case body and the other end of which is connected to a body including a bonnet, trunk, front / rear bumper, and fender of the vehicle; and a one-touch coupler multi-barrel stick, which is connected to the end of the agent inlet pipe and is fixed to a body including a bonnet, trunk, front / rear bumper, and fender of the vehicle, and is composed of a socket connected to a fire extinguisher device.

[0019] It is characterized by further including a plurality of shock-absorbing members formed between the battery pack and the inner surface of the case body to prevent shaking of the battery pack formed in the receiving space and formed inside the case body.

[0020] The above-described coupler plug is characterized by being protected from external exposure and external impact by a cap formed in a body that can be opened and closed. Effects of the invention

[0022] As described above, the battery case for an electric vehicle capable of extinguishing within the golden time according to the present invention forms a case capable of enclosing and accommodating an electric battery for the vehicle, and forms at least one agent inlet passage and one coupler plug in each of the front, rear, left, and right directions in four directions to spray an extinguishing agent into the interior of the case. When a fire occurs in the battery, the extinguishing agent can be rapidly sprayed from outside the vehicle within the golden time using the agent inlet passages formed on all four sides of the case, and a multi-barrel stick extinguishing device can be connected in a one-touch manner using a coupler. By directly spraying the extinguishing agent onto the battery, rapid suppression is possible within the golden time for fire suppression before thermal runaway of the battery, thereby preventing casualties caused by the battery fire and minimizing property damage.

[0023] In addition, the extinguishing agent inlet passages connected to the case are formed on all four sides (front, back, left, and right), allowing the extinguishing agent to be injected from the safest location and direction of the vehicle where the fire occurred, thereby significantly enhancing the safety of fire suppression operations. In particular, the process of injecting the extinguishing agent from the outside through the inlet passages allows for rapid connection and disconnection of the extinguisher containing the agent via a one-touch coupler, enabling initial fire suppression. Furthermore, through precise connection, the extinguishing agent can be efficiently sprayed onto the burning battery without leakage, and the air inside the case is expelled through a coupler installed in a different direction, allowing for the efficient and rapid use of the extinguishing agent without waste.

[0024] In addition, the fire extinguishing agent sprayed into the battery is dispensed in a foam form to fill the inside of the case and is discharged through a coupler in a different direction, thereby extinguishing the fire through suffocation and cooling, enabling rapid fire suppression within the golden time. Furthermore, the smooth spraying of the extinguishing agent can be verified by observing the agent discharged through the coupler in the other direction, and this has the effect of minimizing damage from the spread of fire to the surrounding area.

[0025] The effects of the present invention are not limited to those mentioned above, and various effects may be included within the scope obvious to a person skilled in the art from the contents described below. Brief explanation of the drawing

[0027] FIG. 1 is an exemplary diagram of a vehicle equipped with an electric vehicle battery case capable of being extinguished within the golden time according to the first embodiment of the present invention. FIG. 2 is a perspective view of an electric vehicle battery case capable of extinguishing within the golden time according to a first embodiment of the present invention. FIG. 3 is a cross-sectional view along line AA of FIG. 2. FIG. 4 is an enlarged view of section B of FIG. 3. FIG. 5 is a perspective view of a coupler portion of an electric vehicle battery case capable of being extinguished within the golden time according to the first embodiment of the present invention. FIG. 6 is a cross-sectional view of a coupler before being combined with a fire extinguishing means in a battery case for an electric vehicle capable of extinguishing within the golden time according to the first embodiment of the present invention. FIG. 7 is a cross-sectional view of an electric vehicle battery case capable of extinguishing within the golden time according to the first embodiment of the present invention, in a state combined with a extinguishing means. FIG. 8 is a side view of an electric vehicle having a battery case formed therein that is extinguishable within the golden time according to the first embodiment of the present invention. FIG. 9 is a bottom view of an electric vehicle having a battery case formed therein that is extinguishable within the golden time according to the first embodiment of the present invention. FIG. 10 is a perspective view of an electric vehicle battery case capable of extinguishing within the golden time according to a second embodiment of the present invention. FIG. 11 is a bottom view of an electric vehicle having a battery case formed therein that is extinguishable within the golden time according to a second embodiment of the present invention. FIG. 12 is a perspective view of an electric vehicle battery case capable of extinguishing within the golden time according to a second embodiment of the present invention. Specific details for implementing the invention

[0028] Below, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention. However, since the description of the present invention is merely an example for structural or functional explanation, the scope of the rights of the present invention should not be interpreted as being limited by the embodiments described in the text.

[0029] That is, since the embodiments are capable of 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 embodiment 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.

[0030] Meanwhile, the meaning of the terms described in this invention should be understood as follows.

[0031] 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.

[0032] For example, the first component may be named the second component, and similarly, the second component may also be named the first component.

[0033] 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.

[0034] 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 set-up 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.

[0035] Unless otherwise defined, all terms used herein have the same meaning as generally understood by those skilled in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having meanings consistent with the context of the relevant technology and should not be interpreted as having an ideal or overly formal meaning unless explicitly defined in this invention.

[0036] Now, a battery case for an electric vehicle capable of being extinguished within the golden time according to the first embodiment of the present invention will be described in detail with reference to the drawings.

[0037] Among the attached drawings, FIG. 1 is an exemplary diagram of a vehicle equipped with an electric vehicle battery case capable of extinguishing within a golden time according to a first embodiment of the present invention; FIG. 2 is a perspective view of an electric vehicle battery case capable of extinguishing within a golden time according to a first embodiment of the present invention; FIG. 3 is a cross-sectional view taken along line AA of FIG. 2; FIG. 4 is an enlarged view of section B of FIG. 3; FIG. 5 is a perspective view of a coupler portion of an electric vehicle battery case capable of extinguishing within a golden time according to a first embodiment of the present invention; FIG. 6 is a cross-sectional view of a coupler before being coupled with a fire extinguishing means of an electric vehicle battery case capable of extinguishing within a golden time according to a first embodiment of the present invention; FIG. 7 is a cross-sectional view of an electric vehicle battery case capable of extinguishing within a golden time according to a first embodiment of the present invention in a state coupled with a fire extinguishing means; FIG. 8 is a side view of a vehicle having an electric vehicle battery case capable of extinguishing within a golden time formed according to a first embodiment of the present invention; and FIG. 9 is an electric vehicle battery case capable of extinguishing within a golden time according to a first embodiment of the present invention This is a bottom view of a vehicle with a battery case formed for an electric vehicle capable of handling.

[0038] The present invention relates to a battery case for an electric vehicle capable of extinguishing fire within the golden time, and more specifically, to a new type of battery case for an electric vehicle capable of extinguishing fire within the golden time in which one-touch coupler plugs are connected to the outer sides of the front, rear, left, and right of the case, which accommodates a battery pack installed in an electric vehicle, so that one plug is exposed to the outside of the vehicle body, and a fire extinguishing agent is rapidly injected into the battery case within the golden time to extinguish the fire when a battery fire occurs.

[0039] Specifically, the battery case for an electric vehicle capable of being extinguished within the golden time according to the present invention (hereinafter referred to as the 'battery case') (100) comprises a case body (10) in the form of a housing in which a receiving space (11) is formed to accommodate a battery module (1) inside, a drug inlet pipe (20) connected to the front, rear, left, and right sides of the case body (10), and a one-touch coupler plug (30) formed at the end of the drug inlet pipe (20) and fixed to a body including the bonnet, trunk, front / rear bumper, and fender of the vehicle.

[0040] The above case body (10) is installed on the lower part of the vehicle body and is configured to protect the battery in the event of a collision with the vehicle by housing a battery pack inside. In particular, the case body (10) may be formed using various lightweight materials such as non-ferrous lightweight metals, CFRP, and polymer composite materials so as to meet various safety standards to shield electromagnetic waves of the battery pack and, at the same time, to improve fuel efficiency by minimizing the increase in vehicle weight.

[0041] In addition, the above case body (10) is formed by a press processing method using a mold to improve productivity and maintain dimensional stability, and is composed of an upper case (13) and a lower case (14), and is formed such that the edges are fastened with bolts and nuts to accommodate a battery module (2) inside, and the lower case (14) has four connecting parts (15) formed in the front, back, left, and right directions through which fire extinguishing agent flows in all directions.

[0042] In addition, a flame-retardant pad (12) is formed at the connection portion between the upper case (13) and the lower case (14) constituting the case body (10) to enable smooth injection of the fire extinguishing agent, and at the same time, flames and hot air are directed toward the agent inlet pipe (20) to quickly extinguish the battery pack (2) of the vehicle (1).

[0043] In addition, a flame-retardant pad (12) is formed on the inner surface of the case body (10) to activate the flame-retardant function and reduce the risk of fire in the case body (10). Furthermore, due to thermal runaway of the battery, flames and hot air are guided through the space surrounding the battery pack to the agent inlet pipe (20) formed in the front, back, left, and right directions and discharged to the outside, and a fire extinguishing agent is sprayed through a single agent inlet pipe (20), thereby enabling rapid and effective fire suppression.

[0044] The above-mentioned agent inlet pipe (20) is configured such that one end is connected to the connecting part (15) of the case body (10) and the other end is connected to a plug (31) fixed to the body of the vehicle, and the fire extinguishing agent introduced through a one-touch coupler (30) coupled to the plug (31) is guided into the interior of the case body (10), and is formed by bending a metal pipe to fit the shape of the lower part of the vehicle.

[0045] In particular, a female connecting part (21) with a packing (22) formed inside is fitted at the end connected to the connecting part (15) of the above-mentioned drug inlet pipe (20), and a female screw hole (211) and a groove (212) are formed therein. The drug inlet pipe (20) passes through the groove (212) of the female connecting part (21), and the packing (22) is fitted while the flange (23) formed at the end of the drug inlet pipe (20) is caught on the inner surface of the female screw hole (211).

[0046] That is, by the configuration of the female connection part (21) as described above, even if the drug inlet pipe (20) is positioned at an acute or obtuse angle during the process of connecting the drug inlet pipe (20) to the connection part (15), the female screw hole (211) of the female connection part (21) guides the drug inlet pipe (20) in a horizontal direction during the process of connecting the connection part (15) in a screw-like manner, thereby making it easy to connect the case body (10) and the drug inlet pipe (20).

[0047] In addition, the connection part (15) and the female connection part (21) can be stably introduced into the receiving space (11) without the fire extinguishing agent being exposed to the outside by sealing the connection part by the packing (22) formed inside the female connection part (21).

[0048] In addition, the other end of the above drug inlet pipe (20) is connected to a plug (31) formed on the front bumper, rear bumper, and fenders on both sides of the vehicle, so that four drug inlet pipes are formed by bending them into different lengths and shapes.

[0049] As shown in FIGS. 5 to 7, the above one-touch coupler (30) is configured to include a plug (31) that is fixedly installed on the body of the vehicle and a socket (32) formed in a fire extinguisher device (not shown).

[0050] The plug (31) is integrally formed with an insertion part (312) on one side that is inserted into the interior of the socket (32) and has a locking groove (311) formed therein, and a screw part (313) on the other side to which the drug inlet pipe (20) is screw-fastened.

[0051] In addition, the plug (31) is formed such that its central portion is fixed to the body of the vehicle (1), including the bonnet, trunk, front / rear bumpers, and fenders, and is protected from external exposure and external impact by a cap (4) formed on the body (3) in a manner that allows it to be opened and closed in the same way as a conventional fuel tank cover (not shown).

[0052] In particular, the elastic spring (not shown) installed to open and close the cap (4) formed on the side of the vehicle is configured to have more than twice the elasticity compared to the elastic spring (not shown) of the cap (4) formed on the front and rear of the vehicle, thereby preventing the cap (4) formed on the side from being easily opened and closed.

[0053] The socket (32) comprises a main body (321) connected to a fire extinguishing device on one side, a body (326) which is screw-fastened to one side of the main body (321) and has a valve (323) formed with a plurality of discharge holes (322) inside and elastically formed by a spring (324), and a lock ring (325) formed on the other side, and a cover (327) formed to surround the body (326).

[0054] Additionally, the socket (32) is physically maintained in a state where one side of the spring (324) formed on the inner side of the body (326) is in close contact with the main body (321), and the other side is in close contact with the valve (323) and advanced forward, so that the discharge hole (322) formed in the valve (323) is in close contact with the inner surface of the body (326), thereby preventing the natural discharge of the fire extinguishing agent.

[0055] As shown in FIGS. 6 and 7, the plug (31) and socket (32) configured as described above are such that when the valve (323) of the socket (32) is advanced by the elasticity of the spring (324) and the discharge hole (322) is sealed by being in close contact with the inner surface of the body (326), as shown in FIGS. 7, the insertion part (312) of the plug (31) is inserted into the inside of the valve (323), the valve (323) moves to the rear side by overcoming the elasticity of the spring (324) due to the insertion of the insertion part (312), and at the same time, the lock ring (325) is inserted into the locking groove (311) of the plug (31), thereby physically maintaining the inserted state of the plug (31).

[0056] In addition, as described above, by inserting the insertion part (312), the valve (323) moves inward, thereby opening the discharge hole (322) so that it is spaced apart from the inner surface of the body (326). Consequently, the fire extinguishing agent flowing in from the main body (321) flows into the interior of the body (326), passes through the multiple discharge holes (322), moves toward the plug (31), and is sprayed into the receiving space (11) of the case main body (10) through the agent inlet pipe (20).

[0057] In addition, during the process of spraying the fire extinguishing agent into the receiving space (11), the air formed in the receiving space (11) is discharged to the outside through a plug (31) formed in a different direction, thereby quickly filling the receiving space (11) with the fire extinguishing agent and subsequently removing oxygen from the receiving space (11) through the plug (31) formed in a different direction, thereby suppressing the fire through suffocation and cooling action, and at the same time, some of the fire extinguishing agent is discharged to the outside through the plug (31), so that the user can easily visually confirm that the fire extinguishing agent has been smoothly discharged.

[0058] Meanwhile, FIG. 10 is a perspective view of an electric vehicle battery case capable of extinguishing fire within the golden time according to the second embodiment of the present invention. The feature of this embodiment is that by dividing and forming the agent inlet pipe (20) connected to the front / rear bumper direction of the case body (10), the agent injected through the plug (31) can be sprayed more quickly into the receiving space (11) of the case body (10), thereby preventing the fire from spreading to the entire vehicle within the golden time (2 minutes to 5 minutes).

[0059] In addition, FIG. 11 shows a bottom view of an electric vehicle having a battery case formed therein that can be extinguished within the golden time according to the second embodiment of the present invention.

[0060] The feature of this embodiment is that a second agent inlet pipe (20') is formed in the front and rear parts of the case body (10), with an inner diameter of the agent inlet pipe being 1.5 to 8 times larger than that of the agent inlet pipe (20), and a second plug (31') is formed in the front bumper and rear bumper, which are the ends of the second agent inlet pipe (20'), with a diameter being 1.5 to 8 times larger than that of the plug (31), so that when a high-pressure fire extinguishing device, fire hydrant, or fire truck used by a firefighter arrives quickly, it is directly connected to the high-pressure fire extinguishing device supplied from the fire truck, and the fire extinguishing agent or fire water can be sprayed into the battery case (10) more quickly at a pressure higher than the spray pressure of the fire extinguishing agent through the agent inlet pipe (20) described above, thereby enabling the fire to be suppressed more quickly.

[0061] That is, the drug inlet pipe (20) described above has a plug (31) connected to the drug inlet pipe (20) of approximately 9 Kgf / cm 2 ~ 15 Kgf / cm² 2 While used at a pressure range of approximately 15 Kgf / cm², the plug (31') connected to the second drug inlet pipe (20') is used at a pressure range of approximately 15 Kgf / cm² 2 ~ 25 Kgf / cm² 2 By being used at pressures above this level, it is possible to rapidly suppress fires using high-pressure extinguishing agents supplied from high-pressure fire extinguishing devices, fire hydrants, or fire trucks used by firefighters.

[0062] Furthermore, a check valve (40) is formed at the connection portion between the case body (10) and the second agent inlet pipe (20') to prevent the fire extinguishing agent introduced into the case body (10) from being discharged to the outside of the vehicle. This prevents the fire extinguishing agent or fire extinguishing water sprayed at high pressure from being discharged through the second agent inlet pipe (20') on the opposite side, which has a large diameter, and induces it to be forcibly discharged slowly through the agent inlet pipe (20) which has a small diameter. As a result, the fire extinguishing agent or fire extinguishing water sprayed is filled inside the case body (10), allowing the fire to be suppressed using suffocation and cooling effects.

[0063] As described above, the battery case for an electric vehicle capable of extinguishing a fire within the golden time according to the present invention has the structural features of preventing human casualties and minimizing property damage caused by a battery fire by forming a case capable of enclosing and accommodating an electric battery for the vehicle, and forming agent inlet passages in various directions to spray a fire extinguishing agent into the interior of the case, thereby preventing the fire from spreading to the entire vehicle within the golden time (2 to 5 minutes) when a fire occurs in the battery, and secondarily, by using the agent inlet passages formed in all directions, a fire extinguishing device containing the fire extinguishing agent can be quickly connected from the outside of the vehicle in a one-touch manner using a coupler, thereby allowing the fire to be quickly extinguished within the golden time before thermal runaway of the battery by directly spraying the fire extinguishing agent into the battery.

[0064] In addition, the extinguishing agent inlet route connected to the case is formed in all four directions (front, back, left, and right) of the case, allowing the extinguishing agent to be injected from the safest position and direction of the vehicle where the fire has occurred, thereby greatly improving the safety of fire suppression operations. In particular, the process of injecting the extinguishing agent from the outside through the extinguishing agent inlet route can be quickly connected to and disconnected from the fire extinguisher containing the extinguishing agent by means of a one-touch coupler, which enables initial fire suppression. At the same time, through accurate connection, the extinguishing agent can be efficiently sprayed onto the battery where the fire has occurred without leakage to the outside, allowing the extinguishing agent to be used efficiently without waste even with a small amount of portable fire extinguishing device (2.5L, 4L, 6L, 50L).

[0065] In addition, the fire extinguishing agent sprayed into the battery is sprayed in the form of foam, filling the inside of the case with foam to extinguish the fire through suffocation and cooling, thereby enabling rapid fire suppression and minimizing surrounding damage caused by the fire.

[0066] In addition, it has the feature that when the golden time (10 minutes) has passed and it is connected to a fire hydrant or a fire truck arrives, a stick can be used to connect to the second agent inlet pipe to the fire hydrant or fire truck hose, allowing for the rapid injection of a large amount of fire extinguishing agent or water to completely suppress the fire.

[0068] As explained above, optimal embodiments have been disclosed in the drawings and specification. Specific terms have been used herein, but they are used only for the purpose of describing the invention and are not intended to limit the meaning or the scope of the invention as described in the claims. Therefore, those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the invention should be determined by the technical spirit of the appended claims. Explanation of the symbols

[0070] 1 : Vehicle 2 : Battery Module 3 : Body 4 : Cap 10 : Case Body 11 : Receiving Space 12 : Flame Retardant Pad 20 : Agent Inlet Pipe 30 : One-Touch Coupler 31 : Plug 311 : Locking Groove 312 : Insertion Part 313 : Screw Part 32 : Socket 321 : Body 322 : Discharge Port 323 : Valve 324 : Spring 325 : Lock Ring 326 : Body 327 : Body

Claims

Claim 1 In a battery case for an electric vehicle capable of extinguishing within a golden time, the battery case (100) for an electric vehicle capable of extinguishing within a golden time comprises: a case body (10) formed in the shape of an enclosure, in which a receiving space (11) is formed to accommodate a battery module (1) inside, and the edges of an upper case (13) and a lower case (14) are fastened together with bolts and nuts; and a plurality of agent inlet pipes, one end of which is connected to the case body (10) and the other end of which is connected to a body including the front / rear bumper, the lower section between the left and right doors, and the fender of the vehicle, and plugs connected to the agent inlet pipes, wherein the agent inlet pipes are composed of an agent inlet pipe (20) and a second agent inlet pipe (20') having different inner diameters, and a plug (30) and a second plug (31) are connected to the ends of the agent inlet pipe (20) and the second agent inlet pipe (20') and fixed to a body including the front / rear bumper, the lower section between the left and right doors, and the fender of the vehicle, and a high-pressure fire extinguishing device is connected. A battery case for an electric vehicle capable of extinguishing fires within the golden time, characterized in that the second agent inlet pipe (20') and the second plug (31') have a diameter larger than the agent inlet pipe (20) and plug (31) so that a high-pressure fire extinguishing device can be directly connected. Claim 2 A battery case for an electric vehicle capable of extinguishing within the golden time, characterized in that, in the first paragraph, it further includes a flame-retardant pad (12) formed at the connection portion of the upper case (13) and the lower case (14) constituting the case body (10), which protects the case body (10) when a fire occurs in the battery pack (2) and simultaneously guides the flames and hot air toward the agent inlet pipe (20) to induce rapid extinguishing of the battery pack (2) of the vehicle (1). Claim 3 delete Claim 4 A battery case for an electric vehicle capable of extinguishing a fire within the golden time, characterized in that, in the event of a fire, the plug (31) is connected in a one-touch manner to a one-touch coupler (30) composed of a socket (32) connected to a fire extinguisher device coupled with the plug (31). Claim 5 In claim 1, the case body (10) comprises an upper case (13) and a lower case (14), and the lower case (14) has a plurality of connecting parts (15) formed in the front, rear, left, and right directions through which a fire extinguishing agent is introduced, and one side of the agent inlet pipe (20) is connected to the connecting part (15) of the case body (10), and a female connecting part (21) is fitted with a female screw hole (211) and a groove (212) formed at the end connected to the connecting part (15) of the agent inlet pipe (20) and a packing (22) formed inside, and the agent inlet pipe (20) passes through the groove (212) of the female connecting part (21), and the packing (22) is fitted while the flange (23) formed at the end of the agent inlet pipe (20) is caught on the inner surface of the female screw hole (211), characterized by being configured such that the battery case for an electric vehicle capable of extinguishing within the golden time. Claim 6 A battery case for an electric vehicle capable of extinguishing within the golden time, characterized in that, in the first paragraph, the other side of the drug inlet pipe (20) is connected to a plug (31), and the plug (31) is inserted into the interior of a socket (32) on one side and has an insertion part (312) with a locking groove (311) formed therein and a screw part (313) on the other side to which the drug inlet pipe (20) is screw-fastened are integrally formed. Claim 7 A battery case for an electric vehicle capable of extinguishing fire within the golden time, characterized in that, in claim 1, the second agent inlet pipe (20') having the second plug (31') formed thereon is configured in the front and rear parts of the electric vehicle, respectively, and has a diameter 1.5 to 8 times larger than that of the agent inlet pipe (20) and the plug (31), the second agent inlet pipe (20') having the second plug (31') formed thereon is used at a pressure of 15 Kgf / cm2 to 25 Kgf / cm2 or higher, and high-pressure fire extinguishing agent or fire extinguishing water supplied from a fire hydrant installed inside or outside a building or a fire truck is directly connected using a stick with a coupler, so that rapid fire suppression is possible even after the golden time has passed. Claim 8 A battery case for an electric vehicle capable of extinguishing within the golden time, characterized in that, in claim 1 or 7, it further includes a check valve (40) formed at the connection portion between the case body (10) and the second agent inlet pipe (20') to prevent the extinguishing liquid introduced into the case body (10) from being discharged to the outside through the second agent inlet pipe (20') to which a high-pressure extinguishing device is not connected.

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