Safe storage box

Abstract

The present invention relates to a safe storage box and, more specifically, to a safe storage box comprising: a housing; a plurality of shelves, installed to be spaced apart from each other in the vertical direction inside the housing, and in which a plurality of storage objects can be stored; and a fire extinguishing agent supply unit for supplying a fire extinguishing agent to the inside of a shelf when a fire occurs in a storage object, so that the storage object is immersed in the fire extinguishing agent, the invention having the advantage of being able to quickly suppress a fire when a fire occurs in a storage object.

Description

safe deposit box

[0001] The present invention relates to a safety storage box, and more particularly, to a safety storage box capable of quickly extinguishing a fire in the event of a fire in stored materials stored inside the storage box.

[0002]

[0003] As concerns grow about rising energy prices and environmental pollution due to the depletion of fossil fuels, the demand for eco-friendly alternative energy sources is becoming an essential element for the future.

[0004] Accordingly, research on various power generation technologies, such as nuclear, solar, wind, and tidal power, is ongoing, and interest in power storage devices to use the energy produced in this way more efficiently is also increasing.

[0005] Moreover, with the increasing demand for mobile devices and electric vehicles, the demand for batteries as an energy source is rapidly increasing, and accordingly, extensive research is being conducted on batteries that can meet various needs.

[0006] In particular, interest in lithium-ion-based secondary batteries, which have advantages in energy density, discharge voltage, and output stability, is increasing; however, lithium-ion batteries are highly reactive and have high explosive power, which sometimes causes explosion accidents.

[0007] Therefore, it is very important to safely store secondary batteries in places where research and experiments on secondary batteries are conducted or where large-scale charging and discharging is performed. However, to date, there has been no storage container that guarantees the safety of secondary batteries or can quickly suppress fire in the event of a fire.

[0008] Meanwhile, safety cabinets and reagent cabinets used in laboratories and other settings are widely used as safe storage containers for storing acid-base substances, flammable substances, and other materials. However, while conventional safe storage containers protect the contents inside from external fires, no storage container capable of quickly suppressing internal fires has been proposed.

[0009]

[0010] The present invention has been devised to solve the problems of the above-mentioned prior art, and its purpose is to provide a safety storage box that can quickly extinguish a fire by submerging the contents stored inside in a fire extinguishing agent in the event of a fire.

[0011]

[0012] In order to solve the above-described problem, the safety storage box according to the present invention comprises a housing; a plurality of shelves installed vertically apart from each other inside the housing and storing a plurality of stored items; and a fire extinguishing agent supply unit that supplies a fire extinguishing agent inside the shelves when a fire occurs in the stored items, thereby immersing the stored items in the fire extinguishing agent.

[0013] And, the fire extinguishing agent supply unit is composed of a fire extinguishing agent tank installed at the top inside the housing; a main pipe connected to the fire extinguishing agent tank; a plurality of branch pipes branched from the main pipe and respectively positioned above the plurality of shelves; a valve for opening and closing the branch pipes; a fire detection sensor provided inside the housing to detect a fire in the stored material; a control unit for receiving a fire detection signal from the fire detection sensor and opening the valve; and a nozzle provided in each of the plurality of branch pipes to spray the fire extinguishing agent provided from the fire extinguishing agent tank toward the shelves when the valve is opened.

[0014] Meanwhile, the fire extinguishing agent supply unit may be configured with a plurality of fire extinguishing agent tanks each installed on the plurality of shelves; a nozzle provided in each of the plurality of fire extinguishing agent tanks; a valve for opening and closing the nozzle; a fire detection sensor provided inside the housing for detecting a fire in the stored material; and a control unit for opening the valve when a fire detection signal is transmitted from the fire detection sensor so that the fire extinguishing agent stored in the fire extinguishing agent tank is sprayed toward the shelves through the nozzle.

[0015] Here, the shelf is formed with a plurality of separated spaces by partitions that divide the interior, and the secondary batteries are stored in each of the plurality of separated spaces, and the fire detection sensor detects whether a fire has occurred in each separated space, and the nozzles are provided in a number equal to the number of separated spaces so that they correspond 1:1 to the separated spaces, and the fire extinguishing agent is sprayed only from the nozzles corresponding to the separated space where the fire has occurred.

[0016] And, after the extinguishing agent corresponding to the internal volume of the above separation space is sprayed through the nozzle, the control unit closes the valve to prevent the extinguishing agent from being sprayed any more.

[0017] In addition, the shelf is formed with a plurality of separated spaces by partitions dividing the interior, and the stored items are stored in each of the plurality of separated spaces; the fire extinguishing agent supply unit is formed with a plurality of fire extinguishing agent tanks arranged above each of the separated spaces and storing fire extinguishing agents corresponding to the internal volume of the separated spaces; and a plug installed in a discharge hole formed on the lower surface of the fire extinguishing agent tank and melting when a certain temperature is reached.

[0018] Additionally, in the case where the above-mentioned storage material is a secondary battery, the extinguishing agent provided from the extinguishing agent supply unit is a NaCl aqueous solution of a certain concentration.

[0019] At this time, the housing is made of refractory insulation material or a vacuum insulation layer that maintains a vacuum state is formed inside.

[0020] In addition, a fire alarm system is further provided to externally alert the user of a fire in the stored object by being connected to the fire detection sensor via wire or wirelessly, and the fire alarm system has a communication unit built into it so that a fire occurrence is notified to a mobile terminal or fire department, enabling a more rapid response to the fire occurrence.

[0021] In addition, the interior space of the housing is divided into a plurality of cells in which the shelves are respectively arranged, and the plurality of cells can be independently opened and closed by an inner door, and can be opened and closed as a whole by an outer door that rotates on the outside of the inner door.

[0022]

[0023] The safety storage box of the present invention configured as described above has the advantage of being able to quickly extinguish a fire because, in the event of a fire, the fire extinguishing agent stored in the fire extinguishing agent tank is sprayed inside the shelf where the stored items are stored, thereby submerging the stored items in the fire extinguishing agent.

[0024] In addition, there is an advantage in that by forming multiple separate spaces on the shelf using bulkheads and storing items in each of these separate spaces, and then spraying the fire extinguishing agent only on the separate space where a fire has occurred, the remaining items in which no fire has occurred can be prevented from being damaged by the fire extinguishing agent.

[0025] In particular, in cases where the stored object is a secondary battery, there is an advantage in that a NaCl aqueous solution is supplied as a fire extinguishing agent to quickly discharge the secondary battery, thereby preventing the spread of fire and the occurrence of an explosion.

[0026]

[0027] Figure 1 is a drawing showing the external appearance of a secondary battery safety storage box according to the present invention.

[0028] Figure 2 is a drawing showing a first embodiment of a secondary battery safety storage box according to the present invention.

[0029] Figure 3 is a drawing showing a second embodiment of a secondary battery safety storage box according to the present invention.

[0030] Figure 4 is a drawing showing a third embodiment of a secondary battery safety storage box according to the present invention.

[0031] Figure 5 is a drawing showing a fourth embodiment of a secondary battery safety storage box according to the present invention.

[0032] Figure 6 is a drawing showing the appearance of the shelf used in Figures 4 and 5.

[0033] Figure 7 is a block diagram showing the relationship between a fire detection sensor and a valve centered on a control unit in a safety storage box according to the present invention.

[0034] Fig. 8 is a diagram showing a case where the housing of a secondary battery safety storage box according to the present invention is divided into multiple cells.

[0035]

[0036] A safety storage box according to the present invention comprises a housing; a plurality of shelves installed vertically spaced apart from each other inside the housing and storing a plurality of stored items; and a fire extinguishing agent supply unit that supplies a fire extinguishing agent into the shelves when a fire occurs in the stored items, thereby immersing the stored items in the fire extinguishing agent.

[0037]

[0038] The safety storage box according to the present invention can be applied to a safety storage box that stores items that pose a risk of fire due to spontaneous combustion, such as acid-base substances, flammable substances, and secondary batteries.

[0039] Hereinafter, an embodiment of a safety storage box for storing secondary batteries among the safety storage boxes to which the present invention is applied will be described in detail with reference to the attached drawings.

[0040]

[0041] The secondary battery safety storage box according to the present invention comprises a housing (10), a plurality of shelves (20) installed vertically spaced apart from each other inside the housing (10), and a fire extinguishing agent supply unit (30) for supplying a fire extinguishing agent inside the shelves (20).

[0042]

[0043] The above housing (10) has an internal storage space and a door (11) on one side. A refractory insulating material is installed on the inside of the housing (10) to a certain thickness. The refractory insulating material is a hard material that has heat resistance rather than insulation, and thus, to prevent thermal deformation due to high flames, etc., materials such as carbon fiber and silicone with a high melting point and mechanical strength can be used.

[0044] Meanwhile, in order to safely protect the exterior from heat or flames inside the housing (30), as illustrated in Fig. 3, instead of the aforementioned refractory insulation material, a vacuum insulation layer (12) may be formed inside the wall forming the housing (10) to minimize heat transfer. In a vacuum state, heat transfer such as conduction or convection by air does not occur, so high insulation can be provided.

[0045] In addition, the housing (10) can have its internal space divided into a plurality of cells (10a) by cross-installed bulkheads in the horizontal and vertical directions. A shelf (20) is arranged in each of these plurality of cells (10a).

[0046] When the internal space is divided into a number of cells (10a) in this way, an inner door (11a) and an outer door (11b) are installed in the housing (10) so that the cells (10a) can be opened and closed independently or as a whole.

[0047] That is, as illustrated in FIG. 8, a plurality of cells (10a) and the same number of inner doors (11a) are rotatably installed in the housing (10) so that each cell (10a) can be independently opened and closed with one inner door (11a), and at the same time, one outer door (11b) that can cover the entire entrance area of ​​the plurality of cells (10a) can be rotatably installed in the housing (10) so that the entire cell can be opened and closed at once. To explain in more detail, the outer door (11b) can be rotated on the outside of the inner door (11a), so that when the outer door (11b) is open, only some of the inner doors (11a) among the plurality of inner doors can be rotated so that only specific cells can be opened.

[0048]

[0049] The above shelves (20) are installed one by one at regular intervals in the vertical direction inside the housing (10) and are provided so as to be able to slide in and out of the housing (10). A plurality of secondary batteries (B) are stored inside the shelves (20).

[0050]

[0051] The above fire extinguishing agent supply unit (30) is intended to supply fire extinguishing agent to the shelf (20) in the event of a fire in the secondary battery (B) stored inside the shelf (20), thereby quickly extinguishing the fire by submerging the secondary battery (B) in the fire extinguishing agent.

[0052] This fire extinguishing agent supply unit, as illustrated in FIG. 2, is composed of a fire extinguishing agent tank (31), a main pipe (32) connected to the fire extinguishing agent tank (31), a plurality of branch pipes (33) branched from the main pipe (32), a valve (34) for opening and closing the branch pipes (33), a fire detection sensor (35) provided inside the housing (10), a control unit (36) for receiving a fire detection signal from the fire detection sensor (35), and nozzles (37) provided in each of the plurality of branch pipes (33).

[0053] The above-mentioned fire extinguishing agent tank (31) is installed at the top inside the housing (10) and supplies the fire extinguishing agent through a branch pipe (33) inside the shelves (20) installed spaced apart in the vertical direction.

[0054] Looking into this further, the fire extinguishing agent tank (31) is described as being installed inside the housing (10), but it does not necessarily have to be inside the housing (10) and may be installed outside the housing (10). In particular, when the internal space of the housing (10) is divided into a plurality of cells (10a), a branch pipe (33) extending to each cell (10a) is installed in the fire extinguishing agent tank (31) installed outside the housing (10), and a nozzle (37) is installed in this branch pipe (33) so that the fire extinguishing agent can be sprayed through the corresponding nozzle (37) for each cell (10a).

[0055] The above main pipe (32) has one end connected to the extinguishing agent tank (31) and the other end extends downwards of the housing (10).

[0056] The above branch pipe (33) is positioned on the upper side of a plurality of shelves (20) provided vertically inside the housing (10).

[0057] The above valve (34) is installed at the connection point between the main pipe (32) and the branch pipe (33) and opens and closes the branch pipe (33). Therefore, when the valve (34) is opened, the fire extinguishing agent stored in the fire extinguishing agent tank (31) flows into the branch pipe (33) through the main pipe (32), and when the valve (34) is closed, the fire extinguishing agent does not flow into the branch pipe (33).

[0058] The above fire detection sensor (35) detects when a fire occurs in a secondary battery (B) stored on a shelf (20), and its installation location may be anywhere within the housing (10) where the occurrence of a fire can be detected most quickly, such as the bottom surface of the fire extinguishing agent tank (31), the top surface of the shelf (20), or the outer surface of the nozzle (37). At least one temperature sensor, an infrared sensor, a gas sensor, or a smoke sensor may be applied to the fire detection sensor (35).

[0059] The above control unit (36) is provided on one side of the housing (10) and receives a fire detection signal from the fire detection sensor (35) and opens the valve (34). That is, when the fire detection sensor (35) detects that a fire has occurred in the secondary battery (B) stored on the shelf (20), the control unit (36) that receives this signal opens the valve (34) so ​​that the fire extinguishing agent stored in the fire extinguishing agent tank (31) is supplied to the nozzle (37) through the branch pipe (33).

[0060] The above nozzle (37) is provided at least once in a branch pipe (33) arranged above the shelf (20) and sprays the fire extinguishing agent provided from the fire extinguishing agent tank (31) toward the shelf (20) when the valve (34) is opened. The secondary battery (B) stored on the shelf (20) is immersed in the fire extinguishing agent sprayed in this way.

[0061]

[0062] Meanwhile, the fire extinguishing agent supply unit (30) of the secondary battery safety storage box according to the present invention can also be configured as shown in FIG. 3.

[0063] The fire extinguishing agent supply unit (30) illustrated in FIG. 3 is composed of a plurality of fire extinguishing agent tanks (31), a nozzle (37) connected to the fire extinguishing agent tanks (31), a valve (34) for opening and closing the nozzles (37), a fire detection sensor (35) provided inside the housing (10), and a control unit (36) for receiving a fire detection signal from the fire detection sensor (35).

[0064] The above-mentioned fire extinguishing agent tank (31) stores the fire extinguishing agent in the internal space, and is installed on a plurality of shelves (20) that are installed vertically spaced apart from each other inside the housing (10). That is, the fire extinguishing agent tank (31) illustrated in FIG. 2 is installed on the upper part of the inside of the housing (10), but the fire extinguishing agent tank (31) illustrated in FIG. 3 is installed on a plurality of shelves (20).

[0065] The above nozzle (37) is provided in each of a plurality of fire extinguishing agent tanks (31) and sprays the fire extinguishing agent inside the fire extinguishing agent tank (31) into the shelf (20) located at the bottom.

[0066] The above valve (34) is provided in the nozzle (37) and opens and closes the nozzle (37) to supply the extinguishing agent from the nozzle (37) to the shelf (20) or to block the supply.

[0067] The above fire detection sensor (35) is installed inside the housing (10) and detects when a fire occurs in the secondary battery (B) stored on the shelf (20).

[0068] When the above control unit (36) receives a fire detection signal from the fire detection sensor (35), it opens the valve (34) so ​​that the fire extinguishing agent stored in the fire extinguishing agent tank (31) is sprayed toward the shelf (20) through the nozzle (37). That is, the control unit (36) opens and closes the valve (34) so ​​that the fire extinguishing agent is sprayed through the nozzle (37) or the spraying of the fire extinguishing agent is blocked.

[0069]

[0070] To elaborate further, as illustrated in FIGS. 4 and 6, the shelf (20) can be manufactured in a form in which a plurality of separation spaces (22) are formed by partition walls (21) that divide the interior. When a plurality of separation spaces (22) are formed in the shelf (20) in this way, one secondary battery (B) is stored in each separation space (22).

[0071] At this time, the nozzles (37) are provided in the fire extinguishing agent tank (31) in the same number as the separation spaces (22) so that they correspond 1:1 to the separation spaces (22) of the shelf (20). In addition, a fire detection sensor (35) is provided in each nozzle (37) or installed in each separation space (22) to detect whether a fire has occurred in each separation space (22).

[0072] Accordingly, when the fire detection sensor (35) detects a fire in a specific separated space (22), the extinguishing agent is sprayed only from the nozzle (37) located directly above the separated space (22), so that only the separated space (22) where the fire occurred is filled with the extinguishing agent. In other words, among the multiple separated spaces, the extinguishing agent is not sprayed from the nozzle located directly above the separated space where no fire occurred, but is sprayed only to the separated space where the fire occurred, so that only the secondary battery (B) stored in the separated space where the fire occurred is immersed in the extinguishing agent.

[0073] After the fire extinguishing agent is sprayed through the nozzle (37) into the separation space (22) where the fire has occurred, the control unit (36) closes the valve (34) to prevent further spraying of the fire extinguishing agent. In other words, the control unit (36) has a fire extinguishing agent set in advance corresponding to the internal volume of each separation space (22), and when a fire occurs in this state and the fire extinguishing agent corresponding to the internal volume of the separation space (22) is sprayed, the control unit (36) closes the valve (34) to prevent the fire extinguishing agent from flowing into other surrounding separation spaces.

[0074]

[0075] In addition, the fire extinguishing agent supply unit (30) of the secondary battery safety storage box according to the present invention can also be configured as shown in Fig. 5.

[0076] The fire extinguishing agent supply unit (30) illustrated in Fig. 5 is composed of a plurality of fire extinguishing agent tanks (31) and a stopper (38) installed in the fire extinguishing agent tanks (31).

[0077] The above-mentioned fire extinguishing agent tank (31) is formed into a plurality of separation spaces (22) by a partition wall (21) dividing the interior (as shown in FIG. 6), and is installed on the upper part of a shelf (20) where secondary batteries (B) are stored in each of the plurality of separation spaces (22). That is, the fire extinguishing agent tank (31) is placed one by one above each separation space (22), and a fire extinguishing agent corresponding to the internal volume of the separation space (22) located immediately below is stored inside.

[0078] In detail, the number of fire extinguishing agent tanks (31) is provided in the same manner as the number of separation spaces (22) so that they correspond 1:1 to the separation spaces (22) of the shelf (20). Accordingly, when 10 separation spaces (22) are formed on the shelf (20), a total of 10 fire extinguishing agent tanks (31) are provided, one on each separation space (22).

[0079] The above plug (38) is installed in the discharge hole (31a) formed on the lower surface of the fire extinguishing agent tank (31), and is made of a material such as lead or plastic, and melts when it reaches a certain temperature. Therefore, when a fire occurs in the secondary battery (B) of the shelf (20) and the inside of the housing (10) becomes above a certain temperature, the plug (38) melts and is removed, and as a result, the fire extinguishing agent stored inside the fire extinguishing agent tank (31) is supplied into the separation space (22) of the shelf (20) where the fire occurred through the discharge hole (31a) of the fire extinguishing agent tank (31).

[0080] The above plug (38) may be made of a material that melts due to the fire temperature, as well as a thin film that bursts due to the pressure inside the fire extinguishing agent tank increasing due to high temperature.

[0081]

[0082] Meanwhile, the fire extinguishing agent supplied to the secondary battery (B) of the shelf (20) where the fire broke out in the fire extinguishing agent supply unit (30), i.e., the fire extinguishing agent stored in the fire extinguishing agent tank (31), is a NaCl aqueous solution of a certain concentration. By using the NaCl aqueous solution in this way, it is possible to prevent the secondary battery from being quickly discharged, thereby preventing the fire from spreading or causing an explosion.

[0083]

[0084] In addition, the present invention is provided with a door closer (13 in Fig. 1) that automatically closes an open door (11) when a fire occurs inside or outside the storage box. The door closer (13) automatically closes the door when the temperature of the front of the storage box reaches approximately 50°C or the ambient temperature reaches approximately 60 to 80°C, thereby minimizing secondary damage resulting from the fire.

[0085] In addition, in the present invention, an exhaust port (15) for forcibly exhausting air inside the storage box to the outside and an intake port (14) for introducing air outside the storage box to the inside are each provided on the upper surface of the housing (10).

[0086] These intake vents (14) and exhaust vents (15) can be connected to intake vents and exhaust vents provided on the ceiling of the indoor space. Therefore, in the event of a fire inside the storage unit, flames or hot air inside the storage unit are not discharged into the indoor space, and conversely, in the event of a fire inside the room, flames or hot air from outside are not allowed to flow into the storage unit.

[0087] However, the present invention is not limited to this, and any system that selectively seals the intake and exhaust ports in the event of a fire can be applied without limitation. For example, a system that automatically seals the storage box in the event of a fire can be applied by installing a damper or thermal expansion filter to open and close the exhaust port (15) and the intake port (14). In this case, a fan can be installed in the exhaust port (15) to forcibly circulate the air inside the storage box or exhaust it outside the storage box.

[0088]

[0089] The present invention provides a means for more quickly recognizing a fire situation and effectively notifying relevant persons and organizations when a fire occurs in a secondary battery safety storage box.

[0090] Figure 7 illustrates an environment in which a secondary battery safety storage box equipped with a fire alarm system based on a wired or wireless communication system according to the present invention is installed. A fire alarm system (40) is provided on the outside of the secondary battery safety storage box to externally alert the user of a fire in the secondary battery. The fire alarm system (40) is equipped with an internal communication system to determine the occurrence of a fire from a fire detection sensor (35) and notify relevant organizations such as a mobile terminal (50) of a person concerned and a fire department (60). At this time, the fire occurrence information may include the unique number of the secondary battery safety storage box, the installation location, the current temperature, etc.

[0091]

[0092] The present invention relates to a safety storage box that can quickly extinguish a fire in the event of a fire in a storage object such as a secondary battery, an acid-base substance, or an flammable substance being studied in a laboratory or research center. Since the present invention can be widely used in laboratories of various universities, laboratories of various companies, and laboratories of various national research institutes, it can be widely applied to industries that produce research and experiment equipment.

Claims

1. Housing (10) and; One or more shelves (20) installed vertically spaced apart inside the housing (10) and storing a plurality of stored items (B); A safety storage locker characterized by comprising a fire extinguishing agent supply unit (30) that supplies fire extinguishing agent to the inside of the shelf (20) in the event of a fire in the above-mentioned storage object (B) to immerse the storage object (B) in the fire extinguishing agent.

2. In claim 1, The above fire extinguishing agent supply unit (30) includes a fire extinguishing agent tank (31) that supplies fire extinguishing agent; A main pipe (32) connected to the above-mentioned extinguishing agent tank (31); A plurality of branch pipes (33) branched from the main pipe (32) and positioned on the upper side of the plurality of shelves (20); A valve (34) for opening and closing the above branch pipe (33); A fire detection sensor (35) provided inside the housing (10) to detect a fire in the storage (B); A control unit (36) that receives a fire detection signal from the fire detection sensor (35) and opens the valve (34); A safety storage locker characterized by comprising a nozzle (37) provided in each of the plurality of branch pipes (33) and spraying the extinguishing agent provided from the extinguishing agent tank (31) toward the shelf (20) when the valve (34) is opened.

3. In claim 1, The above-mentioned fire extinguishing agent supply unit (30) comprises a plurality of fire extinguishing agent tanks (31) each installed on a plurality of shelves (20); A nozzle (37) provided in each of the above multiple fire extinguishing agent tanks (31); A valve (34) for opening and closing the above nozzle (37); A fire detection sensor (35) provided inside the housing (10) to detect a fire in the storage (B); A safety storage locker characterized by comprising a control unit (36) configured to open the valve (34) when a fire detection signal is transmitted from the fire detection sensor (35) so that the fire extinguishing agent stored in the fire extinguishing agent tank (31) is sprayed toward the shelf (20) through the nozzle (37).

4. In claim 3, The above shelf (20) is formed with a plurality of separated spaces (22) by partition walls (21) that divide the interior, and the storage items (B) are stored in each of the plurality of separated spaces (22). The above fire detection sensor (35) detects whether a fire has occurred in each separate space (22). A safety storage locker characterized in that the above nozzles (37) are provided in the same number as the separation space (22) so as to correspond 1:1 with the separation space (22), and the fire extinguishing agent is sprayed only from the nozzle (37) corresponding to the separation space (22) where the fire occurred.

5. In claim 4, A safety storage box characterized in that after the extinguishing agent corresponding to the internal volume of the above separation space (22) is sprayed through the nozzle (37), the control unit (36) closes the valve (34) so ​​that the extinguishing agent is no longer sprayed.

6. In claim 1, The above shelf (20) is formed with a plurality of separated spaces (22) by partition walls (21) that divide the interior, and the storage items (B) are stored in each of the plurality of separated spaces (22). The above-mentioned fire extinguishing agent supply unit (30) is arranged above each of the above-mentioned separation spaces (22), and includes a plurality of fire extinguishing agent tanks (31) in which fire extinguishing agents corresponding to the internal volume of the separation space (22) are stored; A safety storage box characterized by comprising a plug (38) installed in a discharge hole (31a) formed on the lower surface of the above-mentioned fire extinguishing agent tank (31) and melted when a certain temperature is reached or broken by the pressure of the fire extinguishing agent.

7. In claim 1, A safety storage box characterized in that the above storage material (B) is a secondary battery, and the fire extinguishing agent provided from the fire extinguishing agent supply unit (30) is a NaCl aqueous solution of a certain concentration.

8. In claim 1, A safety storage box characterized in that the housing (10) is made of refractory insulating material or has a vacuum insulating layer (12) formed therein that maintains a vacuum state.

9. In claim 2, A safety storage locker characterized in that it further comprises a fire alarm system (40) that is connected to the fire detection sensor (35) via wire or wirelessly to externally alert the user of a fire in the storage object (B), and the fire alarm system (40) has a communication unit built into it to notify a mobile terminal (50) or a fire department (60) of a fire occurrence.

10. In claim 1, A safety storage box characterized in that it is provided with a door (11) that opens and closes the front of the housing (10), and the door (11) further includes a door closer (13) that automatically closes the door (11) when a certain temperature is reached.

11. In claim 1, A safety storage box characterized in that the housing (10) further includes an intake port (14) for drawing outside air into the housing (10) and an exhaust port (15) for discharging air inside the housing (10) to the outside.

12. In claim 11, A safety storage box characterized in that a fan is installed in the exhaust port (15) to forcibly circulate the air inside the housing (10) or exhaust it to the outside of the housing (10).

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