KR20230067341A - Solid aerosol automatic extinguishing apparatus for internal installation of battery - Google Patents

Abstract

In an automatic fire extinguishing solid aerosol device for installation inside a battery that is mounted inside a battery module (20) containing a plurality of battery cells (30) and automatically extinguishes fire when the battery cell (30) ignites, according to the features of the present invention, provided is an automatic fire extinguishing solid aerosol device for installation inside a battery, including: a fire extinguisher for a battery module (100) including a device case (110) disposed in a space (S1) between each battery cell (30) or a space (S2) between the batter cell (30) and a module case (21) within the module case (21) for forming the exterior of the battery module (20) and having a space part (111) formed therein; and a solid fire extinguishing agent (120) charged in the space part (111) and generating aerosol fire extinguishing gas by burning when heated to an operating temperature set in consideration of the ignition temperature generated when the battery cell (30) is ignited. A device case (110) is formed with an outlet (112) opened so that the interior of the module case (21) and the space part (111) communicate with each other to discharge the aerosol fire extinguishing gas generated within the space part (111) into the module case (21). Accordingly, the installation and operation of a fire extinguisher is simple.

Description

Solid aerosol automatic fire extinguishing device for internal battery installation {SOLID AEROSOL AUTOMATIC EXTINGUISHING APPARATUS FOR INTERNAL INSTALLATION OF BATTERY}

The present invention relates to an automatic solid aerosol fire extinguishing device for installation inside a battery, and more particularly, it is mounted inside a battery module having a plurality of battery cells or inside a battery package having a plurality of battery modules built-in to prevent the battery cells from being overcharged or It relates to a solid aerosol automatic fire extinguishing device installed inside a battery that can extinguish early by spraying an aerosol extinguishing gas for extinguishing the flame when it ignites due to an abnormal operation such as overcurrent.

As environmental pollution issues have recently emerged, conventional internal combustion engine vehicles are being replaced with electric vehicles that use charging power from a battery as a power source in response to the problem of emitting a large amount of environmental pollutants during driving. In addition, batteries are widely used for the purpose of increasing the portability of products such as electric bicycles, kickboards, vacuum cleaners, and smart phones.

In addition, compared to nickel-based batteries, lithium ion batteries are in the limelight due to their advantages of self-charging and discharging, very low self-discharge rate, and high energy density, because they do not have a memory effect.

On the other hand, in the case of high-capacity batteries, there is a risk of fire and explosion due to abnormal operation such as overcharging or overcurrent. Because it is closely mounted, when a fire occurs in one battery cell, the flame is transferred to another adjacent cell, and the battery module is easily combusted. . In particular, due to the thermal runaway phenomenon, which is a characteristic of batteries such as lithium ion, thermal energy increases rapidly and the energy inside the battery expands, generating instantaneously high heat of around 900 degrees Celsius, which in severe cases causes electric vehicles to burn or explode. could lead

To this end, conventionally, a battery room automatic fire extinguishing system of an electric vehicle for extinguishing a flame early by detecting whether flame or smoke is generated from a battery package with a sensor and operating a fire extinguisher during the detection operation to spray a extinguishing solution to the battery package ( Korean Patent Registration No. 10-2201696) has been disclosed.

However, the conventional automatic fire extinguishing system includes a fire detection sensor for detecting flame or smoke, a fire extinguisher for spraying fire extinguisher according to a control signal, a safety pin removal motor for removing a safety pin of a fire extinguisher, a fire extinguisher use motor for spraying fire extinguisher, and Since the control unit for driving and controlling each motor according to the detection signal must be installed inside the battery room, which has limited internal space, it is not only complicated to install and operate, but also takes up a large volume, so design change of the battery room was essential.

In addition, when the signal line between the sensor and the control unit or the signal line between each motor and the control unit is damaged due to sparks or flames, there is a problem in that the detection signal or the drive control signal is not properly transmitted, so that the fire extinguishing drive may not be performed.

Patent Registration No. 10-2201696 (2021.01.06), battery room automatic fire extinguishing system of electric vehicle.

The present invention was created to solve the above problems, and an object of the present invention is not only to be able to extinguish early by automatically spraying an aerosol extinguishing gas for extinguishing a flame when a battery cell ignites, but also to ignite the battery cell. As it is heated and combusted by the heat generated during the process, it generates aerosol extinguishing gas, so it is not necessary to install and operate a fire detection system for detecting fire heat and flame and output a detection signal, or a conventional electric drive system for spraying extinguishing gas. Operational reliability can be maximized for simple and timely fire extinguishing, and it is placed in the separated space between each battery cell or between the battery cell and the module case and can be installed inside the existing battery module without a separate design change. It is to provide an automatic solid aerosol fire extinguishing device for installation.

According to the features of the present invention, in the solid aerosol automatic fire extinguishing device installed inside the battery, which is mounted inside the battery module 20 in which a plurality of battery cells 30 are embedded and automatically extinguishes when the battery cells 30 are ignited. In the module case 21 forming the outside of the battery module 20, a separation space S1 between each battery cell 30 or a separation space S2 between the battery cell 30 and the module case 21 ), and the device case 110 having a space 111 formed therein, and the battery cell 30 is charged in the space 111 and heated with operating heat set in consideration of the ignition temperature generated when the battery cell 30 is ignited. A fire extinguisher 100 for a battery module including a solid fire extinguishing agent 120 that generates an aerosol extinguishing gas when burned, and the device case 110 includes the inside of the module case 21 and the space portion 111 A solid aerosol automatic fire extinguishing device for installation inside a battery is provided, characterized in that a discharge port 112 opened to communicate is formed to discharge the aerosol extinguishing gas generated in the space 111 to the inside of the module case 21.

According to another feature of the present invention, the device case 110 has a rectangular plate shape in which two broad surfaces 113 opposing both sides and a plurality of narrow surfaces 114 are formed around the two broad surfaces 113. The two broad surfaces 113 are arranged to face the battery cell 30, and at least one narrow surface 114 of the plurality of narrow surfaces 114 is opened to form the outlet 112, and the two broad surfaces 114 are formed. At least one of the broad surfaces 113 of the 113 has an opening to communicate the interior of the module case 21 and the space 111 so that the heat of ignition of the battery cell 30 flows into the device case 110. There is provided a solid aerosol automatic fire extinguishing device for installation inside a battery, characterized in that the heat inlet hole 115 is formed.

According to another feature of the present invention, the battery module 20 is a pouch type battery module in which a plurality of battery cells 30 having a plate shape are inserted into the module case 21 so as to be stacked, The device case 110 is a solid aerosol automatic fire extinguishing device for installation inside a battery, characterized in that the discharge port 112 is inserted and disposed in parallel between the two battery cells 30 stacked so that the outlet 112 faces the side of the module case 21. is provided.

According to another feature of the present invention, the battery module 20 is a cylindrical (Cylindeical Type) battery in which a plurality of battery cells 30 having a cylindrical shape are upright and spaced apart at regular intervals inside the module case 21 It is a module, and the device case 110 is for battery internal installation, characterized in that the discharge port 112 is inserted between each battery cell 30 upright so that the discharge port 112 faces the top, bottom or side of the module case 21 A solid aerosol automatic fire extinguishing device is provided.

According to another feature of the present invention, the device case 110 is made of a disc shape in which a plurality of outlets 112 are spaced apart at regular intervals along the circumference of the side surface, and an attachment member 117 is provided on one side surface. There is provided a solid aerosol automatic fire extinguishing device for installation inside the battery, characterized in that it is attached and mounted on the surface of the battery cell 30 or the inner surface of the module case 21.

According to another feature of the present invention, the device case 110 is made of a plate shape in which a plurality of outlets 112 are spaced apart at regular intervals along the side circumference, and the fire extinguisher 100 for the battery module has a constant The base plate 130 is made of a plate shape having an area and is supported and mounted inside the module case 21 or one side is attached to the surface of the battery cell 30 or the inner surface of the module case 21 and mounted. Including, the device case 110 is provided with a solid aerosol automatic fire extinguishing device for battery installation, characterized in that one or more are mounted on the other side of the base plate 130 and disposed inside the module case 21.

According to another feature of the present invention, the battery module 20 is a cylindrical (Cylindeical Type) battery in which a plurality of battery cells 30 having a cylindrical shape are upright and spaced apart at regular intervals inside the module case 21 module, and the device case 110 is made up of a column shape having a length corresponding to the battery cell 30 and is arranged to stand upright in the separation space S3 formed between the plurality of battery cells 30. A solid aerosol automatic fire extinguishing device for interior installation is provided.

According to another feature of the present invention, the circumference of the device case 110 is recessed inward to have a curvature corresponding to the surface curvature of the battery cells 30 at positions opposite to each of the plurality of battery cells 30. There is provided a solid aerosol automatic fire extinguishing device for installation inside a battery, characterized in that the groove 118 extends vertically.

Meanwhile. According to another feature of the present invention, a separation space (S4) between each battery module 20 or a battery module ( 20) and the device case 210 disposed between the separation space S5 between the package case 11 and having a space 211 formed therein, and the battery module 20 charged in the space 211 A fire extinguisher 200 for a battery package including an extinguishing agent 220 that generates an aerosol extinguishing gas while being burned when heated to the operating heat set in consideration of the ignition temperature generated when igniting; further includes, the device case 210 ) is that the discharge port 212 is formed so that the inside of the package case 11 and the space 211 communicate with each other so that the aerosol digestion gas generated in the space 211 is discharged to the inside of the package case 11. A solid aerosol automatic fire extinguishing device for installation inside a battery is provided.

As described above, according to the present invention,

First, the battery module fire extinguisher 100 installed inside the battery module 20 includes a device case 110 and a solid fire extinguishing agent 120, but a device case 110 having a space 111 formed therein Is a separation space (S1) between each battery cell 30 in the module case 21 forming the outside of the battery module 20 or a separation space (S2) between the battery cell 30 and the module case 21 It can be installed inside the existing battery module 20 without a separate design change, and the solid fire extinguishing agent 120 is charged in the space 111 and the ignition temperature generated when the battery cell 30 is ignited. When heated with the set operating heat, combustion generates aerosol extinguishing gas, so a fire detection system for detecting fire heat and flame and outputting a detection signal or an electrical drive system for injecting extinguishing gas is unnecessary, so installation of a fire extinguisher and Operation is simple, and operation reliability can be maximized by timely fire extinguishing operation.

Second, the device case 110 is formed in the shape of a square plate in which two cheek surfaces 113 opposite to each other and a plurality of narrow surfaces 114 are formed around the two cheek surfaces 113. ) is disposed to face the battery cell 30, and at least one narrow surface 114 of the plurality of narrow surfaces 114 is opened to form an outlet 112 to form a wide surface 113 on the surface of the battery cell 30 Even if it is in close contact with the module case 21, it is possible to easily discharge the aerosol digestion gas generated during combustion into the interior of the module case 21. In addition, at least one of the two broad surfaces 113 communicates the space 111 with the inside of the module case 21 so that the heat of ignition of the battery cell 30 is transferred to the inside of the device case 110. Since the heat inlet hole 115 opened to flow into is formed, it can react sensitively to the ignition of the battery cell 30, and when a plurality of heat inlet holes 115 are distributedly arranged, a plurality of solid fire extinguishing agents 120 It is possible to form two combustion points, so that more stable combustion can be guided.

Third, at least one of the two broad surfaces 113 of the device case 110 is formed with an extension 116 protruding to the side and forming a step between the narrow surface 114 and , The outlet 112 is formed on the narrow surface 114 where the expansion part 116 is formed, so that a space in which the aerosol extinguishing gas discharged from the outlet 112 can diffuse can be secured and the module case 21 ), it is possible to provide an entirely uniform aerosol extinguishing gas inside the

Fourth, when the battery module 20 is a pouch type battery module in which a plurality of battery cells 30 having a plate shape are stacked inside the module case 21, the device case 110 The outlet 112 is inserted and arranged in parallel between the two battery cells 30 stacked so that the discharge port 112 faces the side of the module case 21, and the battery module 20 has a cylindrical shape inside the module case 21. In the case of a cylindrical type battery module in which a plurality of battery cells 30 are upright and spaced apart at regular intervals, the device case 110 has a discharge port 112 covering the top, bottom, or side of the module case 21. By being inserted between the battery cells 30 upright facing each other, it can be universally installed in various structures of the battery module 20 and fire extinguishing efficiency can be increased.

Fifth, the device case 110 is formed in a disc shape with a plurality of outlets 112 spaced apart at regular intervals along the side circumference, and an attachment member 117 is provided on one side of the battery cell 30. By attaching and mounting the device case 110 to the inside of the module case 21, it is attached to the surface or the inner surface of the module case 21 without a separate structure for fixing the battery in a desired position within the battery module 20 in a desired quantity. It provides the effect that the fire extinguisher 100 for the module can be installed.

Sixth, the device case 110 is made of a plate shape in which a plurality of outlets 112 are spaced apart at regular intervals along the side circumference, and the battery module fire extinguisher 100 is made of a plate shape having a certain area. It further includes a base plate 130 supported and mounted inside the module case 21 or mounted by attaching one side to the surface of the battery cell 30 or the inner surface of the module case 21, and the device case ( 110) is mounted on the other side of the base plate 130 and disposed inside the module case 21, so that the fire extinguisher 100 for the battery module 100 in accordance with the standard or required fire extinguishing capacity of the battery module 20 The quantity can be adjusted appropriately.

Seventh, when the battery module 20 is a cylindrical type battery module in which a plurality of battery cells 30 having a cylindrical shape are upright and spaced apart at regular intervals inside the module case 21, the device case 110 is made of a columnar shape having a length corresponding to the battery cell 30 and is arranged to be upright in the separation space S3 formed between the plurality of battery cells 30, so that the separation space between each battery cell 30 ( Even when S2) is narrow and the device case 110 cannot be inserted, the battery module fire extinguisher 100 in the separation space S3 formed between the plurality of battery cells 30 due to the cylindrical shape of the battery cell 30 can be placed.

Eighth, on the circumference of the device case 110, concave grooves 118 are recessed inward to have a curvature corresponding to the surface curvature of the battery cells 30 at positions facing each of the plurality of battery cells 30 vertically. By being extended, it is possible to maximize the size of the device case 110 disposed in the spaced space (S3), so that the amount of solid fire extinguishing agent 120 filled therein can be greatly increased.

Ninth, within the package case 11 forming the outside of the battery package in which the plurality of battery modules 20 are built, the separation space S4 between each battery module 20 or the battery module 20 and the package case 11 The device case 210 disposed between the separation spaces S5 and having a space 211 therein, and the ignition temperature generated when the battery module 20 is ignited while being charged in the space 211 It further includes a fire extinguisher 200 for a battery package including an extinguishing agent 220 that generates an aerosol extinguishing gas while being burned when heated to the operating heat set in consideration of, the device case 210 of the package case 11 An open discharge port 212 is formed so that the inside and the space 211 communicate with each other so that the aerosol digestion gas generated in the space 211 is discharged to the inside of the package case 11, so that the battery in the battery module 20 Flames generated while the cell 30 is ignited are primarily extinguished using the fire extinguisher 100 for battery modules, and flames ignited to the outside of the battery module 20 despite the fire extinguishing operation of the fire extinguisher 100 for battery modules. The fire extinguishing performance can be maximized by secondary evolution using the fire extinguisher 200 for the battery package.

1 is a perspective view and a partially enlarged view showing a rectangular plate-shaped structure of a fire extinguisher for a battery module according to a preferred embodiment of the present invention;
2 and 3 are perspective and side cross-sectional views showing a structure in which a fire extinguisher for a battery module according to a preferred embodiment of the present invention is installed inside a pouch-type battery module;
4 is a photograph of a fire extinguishing agent according to a preferred embodiment of the present invention;
5 is a side cross-sectional view showing the principle of fire extinguishing operation of a fire extinguisher for a battery module according to a preferred embodiment of the present invention;
6 and 7 are perspective and planar cross-sectional views showing a structure in which a fire extinguisher for a battery module according to a preferred embodiment of the present invention is installed inside a cylindrical battery module;
8 and 9 are perspective and side cross-sectional views showing a configuration in which a fire extinguisher for a battery module according to a preferred embodiment of the present invention has a disk shape;
10 is a plan view and a side view showing the configuration of a base plate according to a preferred embodiment of the present invention;
11 is a side cross-sectional view and a planar cross-sectional view showing a configuration in which a fire extinguisher for a battery module according to a preferred embodiment of the present invention has a columnar shape;
12 is a perspective view and plan sectional view showing a configuration in which a concave groove is formed in a module case according to a preferred embodiment of the present invention;
13 and 14 are perspective and side views showing a structure in which a fire extinguisher for a battery package according to a preferred embodiment of the present invention is installed inside the battery package.

Objects, features and advantages of the present invention described above will become more apparent through the detailed description that follows. Hereinafter, a preferred embodiment of the present invention will be described based on the accompanying drawings.

The solid aerosol automatic fire extinguishing device for installing inside a battery according to a preferred embodiment of the present invention is mounted inside a battery module 20 in which a plurality of battery cells 30 are embedded, and automatically extinguishes when the battery cells 30 are ignited. As a fire extinguishing device, as shown in FIG. 1, it includes a fire extinguisher 100 for a battery module including a device case 110 and a solid fire extinguishing agent 120.

First, the device case 110 is a cover member that prevents the solid fire extinguishing agent 120 from being physically deformed by external vibration or shock and allows the solid fire extinguishing agent 120 to be disposed on the battery module 20, As shown in FIGS. 1 to 3, there is a separation space S1 between each battery cell 30 in the module case 21 forming the outside of the battery module 20 or between the battery cell 30 and the module case. It is disposed in the spaced space (S2) between (21) and the space portion 111 is formed therein.

The device case 110 may use a material that is easy to process, such as metal or synthetic resin, but is preferably heat resistant so as not to be deformed by high heat generated when the battery cell 30 is burned, and can be easily heated by the heat of ignition. It is preferable to be made of a thermally conductive material so as to be.

The solid fire extinguishing agent 120 is a member that generates an aerosol extinguishing gas for extinguishing a flame. Referring to FIGS. 1 to 4, the solid extinguishing agent 120 is charged in the space 111 of the device case 110 and the battery cell 30 When heated with the operating heat (eg, 300 ° C) set in consideration of the ignition temperature (eg, 800 ° C or higher) generated during ignition, an aerosol extinguishing gas is generated while burning. Here, the solid fire extinguishing agent 120 may have any one or more of potassium carbonate (K ₂ CO ₃ ) or potassium nitrate (KNO ₃ ) as a main component. For example, it may consist of 77 parts by weight of potassium carbonate, 4 parts by weight of potassium nitrate and 19 parts by weight of resin. The operation heat can be set based on the temperature at which the fire extinguisher 100 for the battery module is heated when an arbitrary battery cell 30 within the battery module 20 is ignited, and the standard of the battery module 20 or the required fire extinguishing operation It can be appropriately adjusted according to the timing.

Since potassium carbonate or potassium nitrate self-ignites and burns in the operating heat, unlike the fire extinguishing agent of the existing automatic fire extinguishing device that requires an explosive component, it does not require an explosive component to generate extinguishing gas, so it can be used and managed more stably. There are advantages. In general, hydrogen fluoride (HF) is generated as the battery cell 30 is burned. Potassium carbonate, the main component of the solid fire extinguishing agent 120, chemically reacts with this hydrogen fluoride to remove hydrogen fluoride in the battery module 20, It exhibits extinguishing performance by producing carbon dioxide, which is an extinguishing component. Here, the potassium nitrate contained in the solid fire extinguishing agent 120 acts as an oxidizing agent and the resin acts as a solid plastic agent. In addition, an ignition agent and an ignition agent may be further included so that the solid fire extinguishing agent 120 in a solid state is burned in the operating heat and converted into an aerosol extinguishing gas. In addition, when the fire extinguishing agent 120 is heated by the heat of ignition, it expands and increases the internal pressure of the device case 110 so that the generated aerosol extinguishing gas is injected at high pressure.

In addition, the device case 110 has an outlet 112 opened so that the inside of the module case 21 and the space 111 communicate with each other, and as shown in FIG. 5, aerosol generated in the space 111 is formed. The extinguishing gas is discharged to the inside of the module case (21). Here, as shown in FIG. 1, the discharge port 112 is formed while the entire one side is opened on the device case 110, but the discharge port 112 can be formed in various shapes such as circular, long hole, etc. To prevent the solid state fire extinguishing agent 120 from escaping through the discharge port 112, the discharge port 112 does not allow the debris of the solid fire extinguishing agent 120 to be discharged into the module case 21. A net (not shown) may be provided. Here, the net body has a porous structure, but it is preferable that the solid fire extinguishing agent 120 in a solid state does not pass through, but is provided so that the aerosol extinguishing gas generated during combustion can pass smoothly.

As described above, the battery module fire extinguisher 100 installed inside the battery module 20 includes a device case 110 and a solid fire extinguishing agent 120, but the device case has a space 111 formed therein. 110 is a separation space (S1) between each battery cell 30 in the module case 21 forming the outside of the battery module 20 or a separation space between the battery cell 30 and the module case 21 It is disposed in (S2) and can be installed inside the existing battery module 20 without a separate design change.

In addition, when the solid fire extinguishing agent 120 is charged in the space 111 and heated to the operating heat set in consideration of the ignition temperature generated when the battery cell 30 is ignited, it generates an aerosol extinguishing gas as it burns, thereby reducing fire heat and A fire detection system for detecting a flame and outputting a detection signal or an electrical drive system for injecting fire extinguishing gas is unnecessary, so the installation and operation of the fire extinguisher is simple, and the operation reliability that can be fire-extinguished and driven in a timely manner can be maximized.

Meanwhile, as shown in FIGS. 1 and 2 , the device case 110 has two cheek surfaces 113 facing each other and a plurality of narrow faces 114 formed around the two cheek faces 113. It is made in the shape of a square plate, and the two broad surfaces 113 are disposed to face the battery cell 30, and one or more narrow surfaces 114 of the plurality of narrow surfaces 114 are opened to form an outlet 112 to form a battery cell ( 30), the aerosol extinguishing gas generated during combustion can be easily discharged into the module case 21 even when the broad surface 113 is in close contact with the surface of the module case 21.

Here, at least one of the two broad surfaces 113 communicates the interior of the module case 21 and the space 111 so that the heat of ignition of the battery cell 30 is transferred to the inside of the device case 110. Since the heat inlet hole 115 opened to flow into is formed, it can react sensitively to the ignition of the battery cell 30, and when a plurality of heat inlet holes 115 are distributedly arranged, a plurality of solid fire extinguishing agents 120 It can form two combustion points, so it can be guided to achieve more stable combustion.

In addition, as shown in FIG. 1, at least one of the two broad surfaces 113 of the device case 110 protrudes laterally and forms a step between them and the narrow surface 114. A portion 116 is formed, and the outlet 112 is formed on the narrow surface 114 where the expansion portion 116 is formed to secure a space in which the aerosol extinguishing gas discharged from the outlet 112 can diffuse. This can provide a uniform aerosol extinguishing gas to the inside of the module case 21 as a whole.

On the other hand, in general, battery modules are classified into a pouch type, a cylindrical type, and a prismatic type according to the shape or mounting method of the battery cell to be embedded.

Here, as shown in FIGS. 2 and 3 , the battery module 20 is a pouch type battery inserted so that a plurality of battery cells 30 having a plate shape are stacked inside the module case 21. In the case of a module, the device case 110 may be disposed by being inserted in parallel between the two battery cells 30 stacked so that the outlet 112 faces the side of the module case 21 .

In addition, as shown in FIGS. 6 and 7, the battery module 20 has a plurality of battery cells 30 having a cylindrical shape inside the module case 21 upright and spaced apart at regular intervals. Type) In the case of a battery module, the device case 110 may be inserted and disposed between the upright battery cells 30 so that the outlet 112 faces the top, bottom, or side of the module case 21.

In addition, although not shown, when the battery module 20 is a prismatic battery module into which a plurality of battery cells having an angular block shape are inserted, the separation space S1 between each battery module 20 or the battery module 20 ) And the battery module fire extinguisher 100 having a plate shape in the separation space (S2) between the module case 21 can be disposed and fire extinguishing operation. As such, the fire extinguisher 100 for a battery module according to a preferred embodiment of the present invention can be universally installed in various structures of the battery module 20 and can increase fire extinguishing efficiency.

On the other hand, as shown in Figures 8 and 9, the device case 110 is made of a disk shape in which a plurality of outlets 112 are spaced apart at regular intervals along the side circumference, and one side has an attachment member 117 Is provided and can be attached and mounted on the surface of the battery cell 30 or the inner surface of the module case 21. Therefore, without a separate structure for fixing the device case 110 to the inside of the module case 21, the effect that the fire extinguisher 100 for the battery module can be installed in a desired position in a desired number in a desired position within the battery module 20 is provided. . In addition, the attachment member 117 can provide an effect of attenuating vibration or shock transmitted from the battery cell 30 and the module case 21 .

And, as shown in FIG. 10, the device case 110 is made of a plate shape in which a plurality of outlets 112 are spaced apart at regular intervals along the side circumference, and the fire extinguisher 100 for the battery module has a constant The base plate 130 is made of a plate shape having an area and is supported and mounted inside the module case 21 or one side is attached to the surface of the battery cell 30 or the inner surface of the module case 21 and mounted. Including, the device case 110 may be disposed inside the module case 21 by mounting one or more on the other side of the base plate 130. Accordingly, the number of fire extinguishers 100 for battery modules can be appropriately adjusted according to the standard of the battery module 20 or the required fire extinguishing capability.

In addition, the base plate 130 provides an effect of damping vibration and shock transmitted from the battery cell 30 or the module case 21 like the above-described attachment member 117, and the base plate 130 On one side, the attachment member 117 is disposed so that the base plate 130 can be attached to the battery module 20 in an adhesive manner.

On the other hand, when the battery module 20 is a cylindrical type battery module in which a plurality of battery cells 30 having a cylindrical shape are upright and spaced apart at regular intervals inside the module case 21, FIG. 11 As shown, the device case 110 is formed in a columnar shape having a length corresponding to the battery cell 30 and is arranged to be upright in the separation space S3 formed between the plurality of battery cells 30, so that each battery cell ( 30), even when the device case 110 cannot be inserted due to the narrow space S2 between the plurality of battery cells 30 due to the cylindrical shape of the battery cell 30, the space S3 formed between the plurality of battery cells 30 A fire extinguisher 100 for a battery module may be disposed.

In addition, as shown in FIG. 12, the device case 110 has a concave recessed inward to have a curvature corresponding to the surface curvature of the battery cell 30 at a position opposite to each of the plurality of battery cells 30 around the device case 110. Since the groove 118 is formed extending vertically, the size of the device case 110 disposed in the spaced space S3 can be maximized, so that the amount of solid fire extinguishing agent 120 filled inside can be greatly increased.

On the other hand, in the solid aerosol automatic fire extinguishing device for installation inside the battery according to a preferred embodiment of the present invention, the flame ignited inside the battery module 20 is primarily extinguished by the fire extinguisher 100 for the battery module, and the flame ignited inside the battery package That is, the flame ignited to the outside of the battery module 20 is secondarily extinguished by the fire extinguisher 200 for a battery package, thereby maximizing the fire extinguishing capability.

Here, the fire extinguisher 200 for the battery package, as shown in FIGS. 13 and 14, each battery module ( 20) disposed between the separation space (S4) or the separation space (S5) between the battery module 20 and the package case 11, and the device case 210 having a space 211 formed therein, and the space It is charged in the unit 211 and includes an extinguishing agent 220 that generates an aerosol extinguishing gas while being burned when heated to the operating heat set in consideration of the ignition temperature generated when the battery module 20 is ignited.

In addition, the device case 210 has an outlet 212 opened so that the inside of the package case 11 and the space 211 communicate with each other, so that aerosol digestion gas generated in the space 211 is discharged from the package case 11 ) is discharged into the interior of the

Therefore, the flame generated while the battery cell 30 is ignited in the battery module 20 is primarily extinguished using the fire extinguisher 100 for the battery module, and despite the fire extinguishing operation of the fire extinguisher 100 for the battery module, the battery Fire extinguishing performance can be maximized by secondarily extinguishing the flame ignited to the outside of the module 20 using the fire extinguisher 200 for the battery package.

The present invention described above is not limited by the foregoing embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible within a range that does not depart from the technical spirit of the present invention. It will be clear to those who have knowledge.

100... fire extinguisher for battery module
110 ... device case 111 ... space
112 ... outlet 113 ... cheekbones
114... Narrow surface 115... Heat inlet hole
116 ... extension 117 ... attachment member
118 ... concave groove 120 ... fire extinguishing agent
130 ... base plate
200... fire extinguishers for battery packages
10 ... Battery package 11.. Package case
20 ... battery module 21 ... module case
30 ... battery cell

Claims (6)

In the solid aerosol automatic fire extinguishing device for installation inside a battery that is mounted inside a battery module 20 in which a plurality of battery cells 30 are embedded and automatically extinguishes when the battery cell 30 is ignited,
A separation space (S1) between each battery cell 30 in the module case 21 forming the outside of the battery module 20 or a separation space S2 between the battery cell 30 and the module case 21 and a device case 110 having a space 111 formed therein,
A battery module including a solid fire extinguishing agent 120 that is charged in the space 111 and generates an aerosol extinguishing gas while being burned when heated with operating heat set in consideration of the ignition temperature generated when the battery cell 30 is ignited. A fire extinguisher 100; including,
The device case 110 has an outlet 112 opened so that the inside of the module case 21 and the space 111 communicate with each other, so that aerosol digestion gas generated in the space 111 is discharged from the module case 21. Solid aerosol automatic fire extinguishing device for installation inside a battery, characterized in that discharged to the inside.
The method of claim 1,
The device case 110,
It consists of two cheekbones 113 opposite to each other and a rectangular plate shape with a plurality of narrow faces 114 formed around the two cheekbones 113, and the two cheekbones 113 face the battery cell 30. arranged to do
At least one narrow surface 114 of the plurality of narrow surfaces 114 is opened to form the outlet 112,
At least one of the two broad surfaces 113 communicates the space 111 with the inside of the module case 21 so that the heat of ignition of the battery cell 30 is transferred to the inside of the device case 110. A solid aerosol automatic fire extinguishing device for installation inside a battery, characterized in that the heat inlet hole 115 is formed so as to flow in.
The method of claim 2,
The battery module 20 is a pouch type battery module in which a plurality of battery cells 30 having a plate shape are inserted into the module case 21 to be stacked,
The device case 110 is a solid aerosol automatic fire extinguishing device for installation inside a battery, characterized in that the discharge port 112 is inserted and disposed in parallel between the two battery cells 30 stacked so that the outlet 112 faces the side of the module case 21. .
The method of claim 2,
The device case 110 is formed in a plate shape in which a plurality of outlets 112 are spaced apart at regular intervals along the side circumference,
The battery module fire extinguisher 100 is made of a plate shape having a certain area and is supported and mounted inside the module case 21 or has one side on the surface of the battery cell 30 or the inner surface of the module case 21. Further comprising a base plate 130 attached and mounted,
The device case 110 is a solid aerosol automatic fire extinguishing device for battery installation, characterized in that one or more are mounted on the other side of the base plate 130 and disposed inside the module case 21.
The method of claim 2,
The battery module 20 is a cylindrical type battery module in which a plurality of battery cells 30 having a cylindrical shape are upright and spaced apart at regular intervals inside the module case 21,
The device case 110 is made of a columnar shape having a length corresponding to the battery cell 30 and is disposed upright in the separation space S3 formed between the plurality of battery cells 30. Aerosol automatic fire extinguishing device.
The method of claim 1,
A separation space (S4) between each battery module 20 or between the battery module 20 and the package case 11 within the package case 11 forming the outside of the battery package in which the plurality of battery modules 20 are embedded. A device case 210 disposed between the spaced spaces S5 and having a space 211 formed therein,
For a battery package including an extinguishing agent 220 that is charged in the space 211 and generates an aerosol extinguishing gas while being burned when heated with operating heat set in consideration of the ignition temperature generated when the battery module 20 is ignited. A fire extinguisher 200; further comprising,
The device case 210 has an outlet 212 opened so that the inside of the package case 11 and the space 211 communicate with each other, so that the aerosol digestion gas generated in the space 211 is discharged from the package case 11. Solid aerosol automatic fire extinguishing device for installation inside a battery, characterized in that discharged to the inside.

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