Fire extinguishing agent and flame-retardant and explosion-proof self-extinguishing composition for preventing fire and explosion

Abstract

The present invention relates to a fire extinguishing agent and a flame-retardant and explosion-proof self-extinguishing composition for preventing fire and explosion, and manufacturing methods therefor. The present invention prevents thermal runaway and enables rapid, effective fire extinguishment in the event of a lithium battery fire. More specifically, the present invention includes deionized water and vanadium oxide. The respective components of the present invention are mixed in a specific ratio to reduce the risk of high temperature and re-ignition in the event of a lithium battery fire and minimize the generation of harmful gases in the event of an electric vehicle fire, thereby reducing the risk of secondary ignition and explosion.

Description

Fire extinguishing agents and flame-retardant, explosion-proof self-extinguishing compositions for fire and explosion prevention

[0001] The present invention relates to a fire extinguishing agent for preventing fire and explosion, a flame-retardant / explosion-proof self-extinguishing composition, and a method for manufacturing the same, which can be effectively used when a fire occurs in a lithium battery that is not easily extinguished with general fire extinguishing agents.

[0002] Lithium batteries are power storage devices with high energy density and low self-discharge rates, widely used in portable electronic devices as well as medium- to large-sized devices such as electric vehicles. However, if a fire occurs in these batteries, the internal temperature can quickly soar to over 1000°C, causing thermal runaway, a phenomenon that spreads the fire. Thermal runaway occurs due to electrical, thermal, and physical shocks within the battery. This damages the separator, causing a short circuit between the anode and cathode, resulting in a rapid temperature rise (over 1000°C). This release of oxygen and flammable gases within the battery can sustain the fire. Furthermore, the sealed battery structure prevents the effective penetration of conventional fire extinguishing agents, posing a risk of re-ignition and fire spread. Therefore, existing fire extinguishing agents have limitations in extinguishing lithium-ion battery fires, and the development of new fire extinguishing agents is essential.

[0003] With the recent increase in the popularity of electric vehicles, the risk of lithium battery fires has also been receiving significant attention. Electric vehicle fires are difficult to extinguish due to the long time it takes for the flames to rise and be completely extinguished. Furthermore, the batteries' self-ignition characteristics and the potential for chain reactions at high temperatures make them extremely difficult to extinguish. Water, a conventional fire extinguishing agent, has a boiling point of 100°C and is therefore unsuitable for lithium battery fires exceeding 1,000°C. This highlights the need for new fire extinguishing agents capable of effectively extinguishing high-temperature lithium battery fires. Against this backdrop, new fire extinguishing agent technologies are needed to quickly and safely extinguish lithium-ion battery fires.

[0004] Therefore, it is expected that using a water-based fire extinguishing agent with good penetration and cooling effect will be effective in suppressing fire and preventing re-ignition as it can reduce short-circuiting by lowering heat through the primary cooling effect and blocking the anode and cathode through the secondary non-conductive liquid.

[0005] The purpose of the present invention is to provide a lithium battery fire extinguishing agent and a method for producing the same, which can quickly extinguish a lithium battery fire in an electric vehicle or a means of transportation.

[0006] Another object of the present invention is to provide a lithium battery extinguishing agent containing deionized water and vanadium oxide and a method for producing the same.

[0007] Another object of the present invention is to provide a lithium battery fire extinguishing agent comprising deionized water, vanadium oxide, urea, ammonium compound and sodium compound, and a method for producing the same.

[0008] The technical problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

[0009] However, the technical problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

[0010] Various embodiments of the present invention are described with reference to the drawings. In the following description, various specific details, such as specific configurations, compositions, and processes, are set forth to ensure a thorough understanding of the present invention. However, certain embodiments may be practiced without one or more of these specific details, or in conjunction with other known methods and configurations. In other instances, well-known processes and manufacturing techniques are not described in specific detail so as not to unnecessarily obscure the present invention. Reference throughout this specification to an embodiment means that a particular feature, configuration, composition, or characteristic described in connection with the embodiment is included in one or more embodiments of the present invention. Therefore, the appearance of an embodiment in various places throughout this specification does not necessarily indicate the same embodiment of the present invention. Additionally, the particular features, configurations, compositions, or characteristics may be combined in any suitable manner in one or more embodiments. Unless otherwise defined herein, all scientific and technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0011]

[0012] To achieve the above purpose, a lithium battery fire extinguishing agent according to the present invention includes deionized water and vanadium oxide.

[0013] In addition, to achieve the above purpose, a method for producing a lithium battery fire extinguishing agent by mixing deionized water and vanadium oxide is provided.

[0014] The ratio of deionized water to vanadium oxide in the above lithium battery fire extinguishing agent may be 40 to 100. Specifically, the ratio may be 40 to 90, or 40 to 80, or 40 to 70, or 40 to 60.

[0015] The above lithium battery fire extinguishing agent contains 40 to 60 wt% deionized water and 0.5 to 10 wt% vanadium oxide.

[0016] In the above lithium battery fire extinguishing agent, urea, ammonium compound, calcium compound, and sodium compound are additionally included.

[0017] In the above lithium battery fire extinguishing agent, at least one selected from the group consisting of ammonium dihydrogen acid ((NH₄)₂HPO₄), ammonium dihydrogen phosphate (NH₄H₂PO₄), and ammonium carbonate ((NH4)2CO3) may be included, the calcium compound may be calcium chloride (CaCl₂), and the sodium compound may be at least one selected from the group consisting of sodium chloride (NaCl), sodium carbonate (Na2CO3), and sodium silicate (Na2SiO3).

[0018] The above lithium battery fire extinguishing agent further comprises gelatin, ethylene glycol, alpha tocopherol, mica and glycerin.

[0019] In this specification, the terms "lithium ion cell," "lithium ion battery," "lithium ion system," and "lithium ion battery system" are used synonymously. Here, a lithium ion cell is an electrochemical element comprising at least one electrode, which is capable of reversibly releasing or absorbing lithium ions.

[0020] The term “lithium ion battery” in this specification refers to a lithium ion (LI) + ) refers to a type of rechargeable battery that stores and releases energy through the movement of electricity. Lithium-ion batteries are widely used in modern portable electronic devices, electric vehicles, and energy storage systems (ESS) due to their characteristics such as high energy density, long life, and low self-discharge.

[0021] In this specification, the term "water" refers to liquid water, a compound composed of oxygen and hydrogen (H2O), the most common solvent. Its CAS number is 7732-18-5 and its identification number is KE-35400. As a basic solvent, water evenly disperses chemical components, enhancing the stability of solutions. Its high specific heat capacity also helps extinguish fires by rapidly cooling the ignition point. However, direct use of water on lithium battery fires poses a risk of explosion, so it must be specifically designed in conjunction with other fire extinguishing agents.

[0022] The term "deionized water" as used herein refers to water from which all ionic substances present in the water have been removed. Deionized water is generally produced by removing cations and anions present in water using an ion exchange resin. The electrical conductivity of deionized water is very low, ranging from 0.1 to 10 μS / cm at 25°C, and contains almost no impurities. The deionized water also includes distilled water, which has an electrical conductivity of approximately 0.5 to 2 μS / cm.

[0023] The term "urea" in this specification has the molecular formula CH4N2O, CAS number 57-13-6, and identification number KE-35144. Urea acts as a nitrogen source. It decomposes in high-temperature environments, releasing nitrogen that reduces oxygen concentration and can suppress fire. It also absorbs heat and, during its decomposition process, contributes to lowering the temperature of a fire.

[0024] The term "collagen" in this specification refers to a protein found primarily in connective tissues such as skin, bone, cartilage, and muscle, which provides strength and elasticity to the tissues. Collagen has a triple helix structure composed of amino acids.

[0025] The term "gelatin" in this specification refers to a substance obtained by processing collagen. Gelatin is formed when collagen is denatured by heat and its structure is unraveled. Its CAS number is 9013-63-2. Gelatin's triple helix structure is partially or completely unraveled, allowing it to dissolve in water and coagulate or form a gel. It increases the viscosity of the solution, preventing extinguishing agents from evaporating easily, allowing them to remain in the fire area for a longer period of time. It also forms a barrier to physically block the spread of fire.

[0026] The term “ammonium compound” as used herein refers to an ammonium ion (NH4 + ) refers to the compound molecule containing ammonia (NH3). The ammonium ion is a mixture of ammonia (NH3) and hydrogen ion (H + ) is formed by accepting various anions (chloride (Cl) - ), sulfate (SO4 2- ), nitrate (NO3 - ) etc.) are combined to form.

[0027] Although not limited thereto, the ammonium compound may be ammonium chloride, ammonium sulfate, ammonium nitrate, ammonium monohydrogen phosphate, ammonium dihydrogen phosphate, and ammonium carbonate ((NH4)2CO3).

[0028] The term "ammonium dihydrogenorthophosphate" in this specification has a molecular formula of NH4H2PO4 and is a non-combustible substance that is effective in suppressing fire combustion. In particular, since phosphate forms a non-combustible film through phosphoric acid decomposition at high temperatures, ammonium dihydrogenorthophosphate can play a role in preventing the spread of fire.

[0029] The molecular formula of the term “Ammonium Dihydrogen Phosphate” in this specification is NH4H2PO4, the CAS number is 7722-76-1, and the identification number is KE-01656. Ammonium dihydrogen phosphate acts as a non-combustible substance in the event of a fire, helping to prevent the fire from spreading any further, and when directly sprayed onto a flame, it absorbs heat and decomposes, thereby lowering the temperature of the flame.

[0030] The term "ammonium carbonate" in this specification has the molecular formula (NH4)2CO3 and is a colorless or white crystalline solid that is highly soluble in water. It is also used in fire extinguishers to enhance stability by forming a separate sealed structure or mixing it with other compounds.

[0031] In this specification, the term “calcium compound” means a compound containing calcium (Ca) atoms, and calcium ions (Ca 2+ ) are various anions (carbonate (CO3) 2- ), sulfate (SO4 2- ), chloride (Cl - ) etc.) are formed by combining with each other.

[0032] Although not limited thereto, the calcium compound may be calcium carbonate, calcium chloride, calcium sulfate, calcium phosphate, or calcium hydroxide.

[0033] The term “calcium chloride” in this specification has a molecular formula of CaCl₂, a CAS number of 10043-52-4, and an identification number of KE-04496. Calcium chloride can absorb moisture, thereby solving moisture problems caused by electrical fires, and can act as a desiccant to control the humidity in the fire environment, and can contribute to suppressing the reaction between lithium and oxygen.

[0034] In this specification, the term “sodium compound” means a compound containing sodium (Na) atoms, and sodium ions (Na+) in combination with various anions (carbonate (CO3) 2- ), sulfate (SO4 2-), chloride (Cl - ) etc.) are formed by combining with each other.

[0035] Although not limited thereto, the sodium compound may be sodium chloride, sodium carbonate, sodium bicarbonate, sodium hydroxide, sodium sulfate, sodium nitrate or sodium silicate.

[0036] The term “sodium silicate” in this specification has the chemical formula of Na2SiO₃ and is an alkaline inorganic compound that forms a hard silicate film on the surface of fuel in case of fire, thereby blocking oxygen and heat and thereby inducing fire extinguishment.

[0037] As used herein, the term "sericite" refers to a fine-grained, muscovite-type mineral, typically white or grayish-white in color, with a soft texture and silky luster. Minerals or materials similar to sericite include muscovite or italite, and such minerals / materials may be included in a composition in place of sericite.

[0038] The molecular formula of the term “riboflavin” in this specification is C 17 It is H20N4O6, the CAS number is 83-9-88-5, the identification number is KE-31387, and it means vitamin B2. Although this riboflavin does not directly play a role as a fire prevention material, it can be used to visually check the degree of application of the fire extinguishing agent by adding color to the solution, or as a marker for safe distinction during use.

[0039] The term “sodium chloride” in this specification has a molecular formula of NaCl, a CAS number of 7647-14-5, and an identification number of KE-31887. Sodium chloride is a substance that prevents the spread of fire, can reduce thermal conductivity in electrical fires, and can act as a blocking agent to physically block fire.

[0040] The term "trehalose" used herein refers to a disaccharide composed of two glucose molecules linked by an alpha-1,1 glycosidic bond, which possesses the property of attracting water. In particular, trehalose possesses greater stability than other sugars, exhibiting strong resistance to heat, acids, enzymes, and other factors, resisting degradation under various conditions and possessing an excellent ability to retain moisture.

[0041] The term "ethylene glycol" used herein refers to 1,2-ethanediol, with the chemical formula C2H4(OH)2, and is primarily used as an antifreeze in coolants. Ethylene glycol also provides freeze protection, increases the boiling point, and reduces the specific heat capacity of water mixtures compared to pure water. Mixtures of ethylene glycol and water provide anticorrosive and acid-resistant properties in coolant and antifreeze solutions, as well as inhibiting the growth of most microorganisms and mold.

[0042] The molecular formula of the term “alpha tocopherol” in this specification is C 29 H 50 It is a type of vitamin E with O2, CAS number 1959-02-09, and identification number KE-10750. Alpha-tocopherol is known as a physiologically active vitamin E, and vitamin E is a fat-soluble antioxidant that protects the lipid components of cell membranes and prevents oxidative stress. Because alpha-tocopherol has antioxidant properties, it is sometimes mixed with certain substances to inhibit oxidation.

[0043] The term "Vanadium" in this specification refers to a chemical element with atomic number 23 and a transition metal in the periodic table. It is a silver-gray metal, hard, ductile, and highly corrosion-resistant. As a transition metal capable of varying oxidation states, it exhibits various colors depending on its oxidation state and acts as a catalyst. Furthermore, in lithium battery fires, vanadium-containing fire suppressants can suppress fires and prevent their spread through various mechanisms, including heat absorption through oxidation-reduction reactions, conductivity blocking, electrolyte stabilization, and oxygen suppression.

[0044] The term “vanadium oxide” as used herein refers to a compound composed of vanadium and oxygen, which can exist in various oxidation states.

[0045] Although not limited thereto, the vanadium oxide may be vanadium pentoxide, vanadium tetraoxide, vanadium trioxide, and vanadium dioxide.

[0046] In this specification, the term “Vanadium(V) Oxide (V2O5)” means an oxide of vanadium having an oxidation state of +5, which generally exists as a yellow to orange crystalline solid and is the most stable compound among vanadium compounds.

[0047] The term “glycerin” in this specification refers to a trihydric alcohol having the chemical formula C3H8O₃, which is a colorless, odorless, viscous liquid that attracts moisture and is used as a humectant and solvent in various industrial fields.

[0048]

[0049] In one specific embodiment of the present invention, a lithium battery extinguishing agent comprising deionized water and vanadium oxide is provided.

[0050] In the above specific example, a lithium battery fire extinguishing agent is provided in which the ratio of the deionized water and vanadium oxide is 40 to 100, the deionized water is 40 to 90 wt%, the vanadium oxide is 0.5 to 10 wt%, the lithium battery fire extinguishing agent is provided, the vanadium oxide is vanadium trioxide and / or vanadium pentoxide, and a lithium battery fire extinguishing agent is provided, further comprising urea, an ammonium compound, a calcium compound, and a sodium compound, wherein the urea is 0.5 to 5 wt%; the ammonium compound is 0.5 to 5 wt%; the calcium compound is 0.5 to 10 wt%; A lithium battery fire extinguishing agent is provided, wherein the sodium compound is 5 to 20 wt%, and the ammonium compound may include at least one selected from the group consisting of ammonium dihydrogen acid (NH4H2PO4), ammonium dihydrogen phosphate (NH4H2PO4), and ammonium carbonate ((NH4)2CO3), the calcium compound is calcium chloride (CaCl2), and the sodium compound may include at least one selected from the group consisting of sodium chloride (NaCl), sodium carbonate (Na2CO3), and sodium silicate (Na2SiO3), and the lithium battery fire extinguishing agent composition further includes gelatin, ethylene glycol, alpha tocopherol, sericite, and glycerin, and the gelatin is 0.5 to 10 wt%, the ethylene glycol is 10 to 30 wt%, and the alpha tocopherol is 0.5 A lithium battery fire extinguishing agent is provided, wherein the amount of the extinguishing agent is 2 wt%, the amount of the mica is 0.1 to 3 wt%, and the amount of the glycerin is 0.5 to 3 wt%.

[0051] In one specific embodiment of the present invention, a method for preparing a lithium battery fire extinguishing agent comprising deionized water and vanadium oxide is provided.

[0052] In the above specific example, a method for producing a lithium battery fire extinguishing agent is provided, wherein the ratio of the deionized water and the vanadium oxide is 40 to 100, wherein the deionized water is 40 to 90 wt%, the vanadium oxide is 0.5 to 10 wt%, wherein the vanadium oxide is vanadium trioxide and / or vanadium pentoxide, wherein a method for producing a lithium battery fire extinguishing agent is provided, wherein the method further comprises urea, an ammonium compound, a calcium compound, and a sodium compound, wherein the urea is 0.5 to 5 wt%; the ammonium compound is 0.5 to 5 wt%; the calcium compound is 0.5 to 10 wt%; A method for producing a lithium battery fire extinguishing agent is provided, wherein the sodium compound is 5 to 20 wt%, and the ammonium compound may include at least one selected from the group consisting of ammonium dihydrogen monohydrate (NH4H2PO4), ammonium dihydrogen phosphate (NH4H2PO4), and ammonium carbonate ((NH4)2CO3), the calcium compound is calcium chloride (CaCl2), and the sodium compound may include at least one selected from the group consisting of sodium chloride (NaCl), sodium carbonate (Na2CO3), and sodium silicate (Na2SiO3), and a method for producing a lithium battery fire extinguishing agent is provided, wherein the lithium battery fire extinguishing agent composition further includes gelatin, ethylene glycol, alpha tocopherol, sericite, and glycerin, and the gelatin is 0.5 to 10 wt%, and the ethylene glycol is 10 to 30 wt%, A method for producing a lithium battery fire extinguishing agent is provided, wherein alpha-tocopherol is 0.5 to 2 wt%, mica is 0.1 to 3 wt%, and glycerin is 0.5 to 3 wt%.

[0053] In one specific embodiment of the present invention, a method for producing a lithium battery fire extinguishing agent is provided, comprising: a first step of adding ethylene glycol, a sodium compound, a calcium compound, and mica to deionized water; a second step of diluting the solvent to 250 ml of ethylene glycol per 1000 ml; a third step of adding vanadium oxide, an ammonium compound, urea, gelatin, alpha-tocopherol, and a sodium compound; and a fourth step of stirring at 1000 to 1500 RPM and then adding sodium carbonate.

[0054] In the above specific example, the ammonium compound may include at least one selected from the group consisting of ammonium dihydrogen oxide (NH4H2PO4), ammonium dihydrogen phosphate (NH4H2PO4), and ammonium carbonate ((NH4)2CO3), the calcium compound may be calcium chloride (CaCl2), the sodium compound may include at least one selected from the group consisting of sodium chloride (NaCl), sodium carbonate (Na2CO3), and sodium silicate (Na2SiO3), and the vanadium oxide may be vanadium trioxide and / or vanadium pentoxide. A method for producing a lithium battery fire extinguishing agent is provided.

[0055]

[0056] According to the configuration of the present invention, unlike the fire extinguishing powder of a conventional fire extinguisher, it is possible to prevent thermal runaway in the event of a lithium battery fire and to quickly and effectively extinguish the fire, and in the event of a fire in an electric vehicle, it is possible to minimize the generation of harmful gases and minimize the risk of secondary ignition or explosion.

[0057] In addition, the effects of the present invention are not limited to the above-described effects, and should be understood to include all effects that can be inferred from the composition of the invention described in the detailed description or claims of the present invention.

[0058]

[0059] Figure 1 is a drawing that simply expresses the manufacturing process of the present invention.

[0060]

[0061] Hereinafter, the present invention will be described in more detail through examples. These examples are intended solely to illustrate the present invention more specifically, and it will be apparent to those skilled in the art that the scope of the present invention is not limited by these examples, in accordance with the gist of the present invention.

[0062]

[0063] Manufacturing of digestive medicines

[0064] Example 1. Preparation of primary raw materials

[0065] 14 to 16 wt% of sodium chloride, 45 to 55 wt% of deionized water, about 30 wt% of ethylene glycol, 2.5 wt% of sodium carbonate, 2 wt% of calcium chloride, and 0.5 wt% of mica were added. Afterwards, the temperature was maintained above 50℃ for 30 minutes while stirring at a stirrer speed of 300 to 5000 RPM. At room temperature, high-speed stirring was performed to check for foaming, and if a certain amount of foaming occurred, the solution container was sealed with a stopper. At this time, if the viscosity was 5 cp or less, sodium silicate was added. Afterwards, the pH was measured to ensure the material stability of the mixed solution, and it was diluted with ethylene glycol after aging.

[0066]

[0067] The composition of primary raw materials is as shown in Table 1 below.

[0068] Name Chemical formula Ratio (weight %) Distilled water DI Water 50 Sodium chloride NaCl 15 Ethylene glycol C2H4(OH) 2 30 Sodium carbonate Na2CO3 2.5 Calcium chloride CaCl 2 2 Sericite X2Y 4~6 Z8O2(OH,F)40.5

[0069]

[0070]

[0071] Example 2. Preparation of secondary raw materials

[0072] Prepare by heating a hot plate to 250℃ or higher. NaCl was added to 50 wt% of the primary raw material of Example 1 at a stirrer speed of 4000 to 8000 RPM and 120℃. After maintaining the temperature above 50℃ for 30 minutes, when the color of the solution was no longer visible, 5 wt% of calcium chloride and 2.5 wt% of vanadium pentoxide were added. After stirring for about an hour, 8 wt% of gelatin was added at 80℃, and 3.5 wt% of urea and 2.5 wt% of alpha-tocopherol were added.

[0073] Stir at high speed to check for foaming. Once a certain amount of foam has formed, seal the solution container with a stopper. At this time, 2 wt% of PVA (polyvinyl alcohol) was added. Afterwards, the pH was measured to confirm that the pH was between 4.2 and less than 6, and the temperature was confirmed to be between 18 and 25°C.

[0074]

[0075] The composition of secondary raw materials is as shown in Table 2 below.

[0076] Name Chemical formula Ratio Primary raw material complex 50 Sodium chloride NaCl 8 Ammonium carbonate (NH 4) 2 CO 3 2 Vanadium pentoxide V 20 5 2.5 Calcium chloride CaCl ₂ 5 Ammonium phosphate NH 4 H 2 PO 4 2.5 Gelatin C 6 H 12 O610 element CH4N2O3.5 alpha-tocopherol C 29 H 50 O22.5 ethylene glycol C2H4(OH)214 PVA polyvinyl alcohol-

[0077]

[0078] Example 3. Preparation of tertiary raw materials

[0079] At a stirrer speed of 3000 to 8000 RPM, 0.8 wt% of urea, 14 wt% of sodium chloride, 20 wt% of ethylene glycol, 0.5 wt% of alpha-tocopherol, 1.7 wt% of sodium carbonate, 0.3 wt% of mica, 0.8 wt% of ammonium carbonate, and 1.7 wt% of glycerin were added to 50 to 55 wt% of deionized water. Thereafter, the temperature was maintained above 100°C, and 2.5 wt% of calcium chloride and 0.8 wt% of ammonium dihydrogen phosphate were mixed for 30 minutes, respectively. After one hour, gelatin was added at about 2.7 wt% or more at 80°C.

[0080] After stirring at high speed and confirming foaming, the solution container was sealed with a stopper. At this time, 0.3 wt% of sodium silicate was added.

[0081]

[0082] The composition of raw material 3 is as shown in Table 3 below.

[0083] NameChemical formulaRatio (weight %)Deionized water53.3UreaCH4N2O0.8Calcium chlorideCaCl22.5GelatinC6H 12 O62.7 Ammonium dihydrogen phosphate NH4H2PO4 0.8 Sodium chloride NaCl 14.2 Ethylene glycol C2H4(OH)2 20 Vanadium pentoxide O5V2; V2O5 0.4 Alpha tocopherol C 29 H 50 O20.5 Sodium carbonate Na2CO3 1.7 Sericite X2Y 4~6 Z8O2(OH,F)40.3Ammonium carbonate(NH4)2CO30.8GlycerinC3H8O1.7Sodium silicateNa2SiO30.3

[0084]

[0085] Experiment to confirm the effectiveness of digestive composition

[0086] Experimental Example 1 was manufactured by mixing Raw Material 1 of Example 1 and Raw Material 2 of Example 2 in a 2:1 ratio. Experimental Example 2 was manufactured using the Raw Material of Example 3. Experimental Example 3 was manufactured by mixing Raw Material 2 and Raw Material 3 in a 1:1 ratio. The components and ratios of each Experimental Example are as shown in Table 4 below.

[0087] Composition and ratio (weight%) of Experimental Examples 1 to 3 Name Chemical formula Experimental Example 1 Experimental Example 2 Experimental Example 3 Deionized water 41.75 3.34 6.25 Urea CH4N2O 1.20.8 1.5 Calcium chloride CaCl2 3.32.5 3.35 Gelatin C6H 12 O6 3.3 2.7 4.5 Ammonium dihydrogen phosphate NH4H2PO4 0.8 0.8 1.25 Sodium chloride NaCl 15.2 14.2 14.5 Ethylene glycol C2H4(OH)2 29.7 20 22.25 Vanadium pentoxide O5V2; V2O5 0.8 0.4 0.9 25 Alpha tocopherol C 29 H 50 O₂0.80.51Sodium carbonateNa2CO32.11.71.5625SericiteX2Y 4~6 Z8O2(OH,F)40.40.30.3125Ammonium carbonate(NH4)2CO30.70.81.1GlycerinC3H8O₃- 1.71.25Sodium silicateNa2SiO3- 0.30.25

[0088] The results of checking the fire extinguishing time, fire extinguishing temperature, and re-ignition of the fire extinguishing composition of each experimental example for a fire caused by one lithium ion battery are as shown in Table 5 below.

[0089]

[0090] Fire extinguishing time Temperature after fire extinguishing Whether or not there was re-ignition Experimental example 140 seconds 90℃ None Experimental example 225 seconds 80℃ None Experimental example 35 seconds 55℃ None

[0091] From the above results, it can be confirmed that there is no re-ignition in all of Experimental Examples 1 to 3, and it can be confirmed that the fire extinguishing time of the fire extinguishing composition of Experimental Example 3 is 87.5% shorter than that of Experimental Example 1, and the temperature after fire extinguishing is approximately 38% lower than that of Experimental Example 1.

[0092]

[0093] While specific aspects of the present invention have been described in detail above, it should be apparent to those skilled in the art that these specific descriptions are merely preferred embodiments and do not limit the scope of the present invention. Therefore, the substantial scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Lithium battery extinguishing agent containing deionized water and vanadium oxide.

2. In paragraph 1, A lithium battery extinguishing agent, wherein the ratio of deionized water to vanadium oxide is 40 to 100.

3. In paragraph 1, A lithium battery extinguishing agent comprising 40 to 90 wt% of deionized water and 0.5 to 10 wt% of vanadium oxide.

4. In paragraph 1, A lithium battery fire extinguishing agent, wherein the vanadium oxide is vanadium trioxide and / or vanadium pentoxide.

5. In paragraph 1, A lithium battery extinguishing agent further comprising elements, ammonium compounds, calcium compounds and sodium compounds.

6. In paragraph 5, The above elements are 0.5 to 5 wt%; Ammonium compound 0.5 to 5 wt%; Calcium compound 0.5 to 10 wt%; A lithium battery extinguishing agent containing 5 to 20 wt% sodium compound.

7. In paragraph 5, A lithium battery fire extinguishing agent, wherein the ammonium compound may include at least one selected from the group consisting of ammonium dihydrogen monohydrate (NH4H2PO4), ammonium dihydrogen phosphate (NH4H2PO4), and ammonium carbonate ((NH4)2CO3), the calcium compound may include calcium chloride (CaCl2), and the sodium compound may include at least one selected from the group consisting of sodium chloride (NaCl), sodium carbonate (Na2CO3), and sodium silicate (Na2SiO3).

8. In paragraph 1, The above lithium battery fire extinguishing agent composition further comprises gelatin, ethylene glycol, alpha tocopherol, mica and glycerin.

9. In paragraph 8, A lithium battery extinguishing agent, wherein the gelatin is 0.5 to 10 wt%, ethylene glycol is 10 to 30 wt%, alpha-tocopherol is 0.5 to 2 wt%, mica is 0.1 to 3 wt%, and glycerin is 0.5 to 3 wt%.

10. A method for producing a lithium battery fire extinguishing agent comprising deionized water and vanadium oxide.

11. In paragraph 10, A method for producing a lithium battery fire extinguishing agent, wherein the ratio of deionized water to vanadium oxide is 40 to 100.

12. In paragraph 10, A method for producing a lithium battery fire extinguishing agent, wherein the deionized water is 40 to 90 wt% and the vanadium oxide is 0.5 to 10 wt%.

13. In paragraph 10, A method for producing a lithium battery fire extinguishing agent, wherein the vanadium oxide is vanadium trioxide and / or vanadium pentoxide.

14. In paragraph 10, A method for producing a lithium battery fire extinguishing agent, further comprising an element, an ammonium compound, a calcium compound and a sodium compound.

15. In paragraph 14, The above elements are 0.5 to 5 wt%; Ammonium compound 0.5 to 5 wt%; Calcium compound 0.5 to 10 wt%; A method for producing a lithium battery fire extinguishing agent, wherein the sodium compound is present in an amount of 5 to 20 wt%.

16. In paragraph 14, A method for producing a lithium battery fire extinguishing agent, wherein the ammonium compound may include at least one selected from the group consisting of ammonium dihydrogen monohydrate (NH4H2PO4), ammonium dihydrogen phosphate (NH4H2PO4), and ammonium carbonate ((NH4)2CO3), the calcium compound may include calcium chloride (CaCl2), and the sodium compound may include at least one selected from the group consisting of sodium chloride (NaCl), sodium carbonate (Na2CO3), and sodium silicate (Na2SiO3).

17. In paragraph 10, A method for producing a lithium battery fire extinguishing agent composition, wherein the lithium battery fire extinguishing agent composition further comprises gelatin, ethylene glycol, alpha tocopherol, mica, and glycerin.

18. In paragraph 17, A method for producing a lithium battery fire extinguishing agent, wherein the gelatin is 0.5 to 10 wt%, ethylene glycol is 10 to 30 wt%, alpha-tocopherol is 0.5 to 2 wt%, mica is 0.1 to 3 wt%, and glycerin is 0.5 to 3 wt%.

19. Step 1: Add ethylene glycol, sodium compound, calcium compound and mica to deionized water; A second step of diluting the above solvent with ethylene glycol; The third step involves adding vanadium oxide, ammonium compounds, urea, gelatin, alpha-tocopherol and sodium compounds; and A method for producing a lithium battery fire extinguishing agent comprising a fourth step of stirring at 1000 to 1500 RPM and then adding sodium carbonate.

20. In the 19th paragraph, the ammonium compound may include at least one selected from the group consisting of ammonium dihydrogen oxide (NH4H2PO4), ammonium dihydrogen phosphate (NH4H2PO4), and ammonium carbonate ((NH4)2CO3), the calcium compound may be calcium chloride (CaCl2), the sodium compound may include at least one selected from the group consisting of sodium chloride (NaCl), sodium carbonate (Na2CO3), and sodium silicate (Na2SiO3), and the vanadium oxide may be vanadium trioxide and / or vanadium pentoxide. A method for producing a lithium battery fire extinguishing agent.

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