Battery storage apparatus with fire suppression function

Abstract

A battery storage apparatus having a fire suppression function according to one embodiment of the present invention may comprise: a body unit having an open upper portion for accommodating a battery; a lid unit covering the open upper portion of the body unit; and a plurality of fire extinguishing agent pockets provided on an inner surface of the body unit or the lid unit to release a wetting fire extinguishing agent composition in the event of a fire in the battery, or provided on an outer surface of the body unit or the lid unit to store the wetting fire extinguishing agent composition.

Description

Battery storage equipment equipped with fire suppression capabilities The present invention relates to battery storage equipment, and more specifically, to battery storage equipment equipped with a fire suppression function. Recently, casualties and property damage caused by lithium battery fire accidents have become a hot topic. Due to the characteristics of lithium batteries, there is a problem in that fires are not easily extinguished and persist for a long time. These batteries are used in various fields such as ships, aircraft, submarines, trains, and subways, and a fire in a battery can cause more fatal damage to these facilities than a fire in other components. Despite the fact that battery fires must be extinguished very quickly and completely, effective means for extinguishing battery fires have yet to be presented. The objective of the present invention is to provide a battery storage device equipped with a fire suppression function. A battery storage device equipped with a fire suppression function according to the purpose of the present invention described above may be configured to include: a body portion with an open top for storing a battery; a lid portion covering the open top of the body portion; and a plurality of fire extinguishing agent pouches provided on the inner surface of the body portion or the lid portion to release a penetrating fire extinguishing agent composition in the event of a fire in the battery, or provided on the outer surface of the body portion or the lid portion to store the penetrating fire extinguishing agent composition. Here, the device is configured to further include a bag strap provided on the side of the body part, and the infiltration extinguishing agent composition can be discharged into the battery storage equipment by manual pressing of a button or the extinguishing agent composition can be automatically discharged into the battery storage equipment by detection of a temperature sensor. And the above-mentioned penetration extinguishing agent composition may be configured to include 5 to 10.9 wt% of a metal carbonate; 1 to 10 wt% of urea; 3 to 10 wt% of a freezing point depressant; 0.5 to 10 wt% of an amphoteric surfactant; and 76.7 to 90 wt% of water. A battery storage device equipped with a fire suppression function according to the purpose of the present invention described above may be configured to include a body part with an open top for storing a battery; and a lid part that covers the open top of the body part. Here, the body portion is configured to contain a predetermined amount of a penetration fire extinguishing agent composition for extinguishing a fire in the event of a fire in the battery, and the inner surface of the body portion and the lid portion may further include an inner plate made of a metal material to withstand the heat generated in the event of a fire in the battery. And the above-mentioned penetration extinguishing agent composition may be configured to include 5 to 10.9 wt% of a metal carbonate; 1 to 10 wt% of urea; 3 to 10 wt% of a freezing point depressant; 0.5 to 10 wt% of an amphoteric surfactant; and 76.7 to 90 wt% of water. According to the battery storage equipment equipped with the fire suppression function described above, by providing a fire extinguishing agent bag within the battery storage equipment and configuring the fire extinguishing agent to be automatically released in the event of a battery fire, it is possible to quickly and efficiently extinguish a fire in a lithium battery stored within the battery storage equipment. In addition, according to the battery storage equipment equipped with a fire suppression function, a fire extinguishing agent bag is provided on the outside of the battery storage equipment, so that in the event of a battery fire, the fire extinguishing agent can be injected into the battery storage equipment or quickly inserted to extinguish the lithium battery, thereby having the effect of extinguishing the fire quickly and efficiently. In addition, according to the battery storage equipment equipped with a fire suppression function, a predetermined amount of fire extinguishing agent is stored within the battery storage equipment, so that in the event of a battery fire, the lithium battery can be quickly placed inside the battery storage equipment to extinguish the fire quickly and efficiently. FIG. 1 is an exemplary diagram of a battery storage device equipped with a fire suppression function according to one embodiment of the present invention. FIGS. 2 and FIGS. 3 are perspective views of a battery storage device equipped with a fire suppression function according to an embodiment of the present invention. FIG. 4 is a partial enlarged view of a digestive medicine pouch according to one embodiment of the present invention. The present invention is susceptible to various modifications and may have various embodiments; therefore, specific embodiments are illustrated in the drawings and described in detail in the specific details for carrying out the invention. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Similar reference numerals have been used for similar components in the description of each drawing. Terms such as first, second, A, B, etc., may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of a plurality of related described items or any of a plurality of related described items. When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to indicate the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. FIG. 1 is an exemplary diagram of a battery storage device equipped with a fire suppression function according to one embodiment of the present invention. Referring to FIG. 1, a battery storage device is exemplified that is equipped with a function to quickly and effectively extinguish a fire in a battery while storing the battery. These batteries are configured to be used while stored in a battery storage device, and a wire (10) may be configured to extend from a charge / discharge port (110a) of the battery storage device to supply power to the battery or to distribute power to the battery externally. Alternatively, it may be configured to supply power to various devices equipped in the battery storage device or to distribute power externally. The charging / discharging port (110a) may be configured with an electromagnet, and when a fire is detected by a temperature sensor (180, see FIG. 3) inside the battery storage equipment, the wire automatic separator (110b) may be configured to drive the electromagnet to separate the wire (10) from the charging / discharging port (110a). In the event of a fire, the fire may spread through the wire (10) or an electrical accident may occur, so to prevent this, an automatic wire separator (110b) can automatically separate the wire (10). The battery may be of various large, medium, or small sizes used in aircraft, ships, submarines, trains, subways, etc., and the battery storage equipment may also be manufactured and used to suit batteries of these various sizes and uses. For example, the battery may be a lithium battery, but the present invention is not limited thereto. FIGS. 2 and 3 are perspective views of a battery storage device equipped with a fire suppression function according to one embodiment of the present invention, and FIG. 4 is a partial enlarged view of a fire extinguishing agent bag according to one embodiment of the present invention. First, referring to FIGS. 2 and 3, a battery storage device (100) equipped with a fire suppression function according to one embodiment of the present invention may be configured to include a body part (110), a lid part (120), a bag strap (130), a fire extinguishing agent pouch (140), a metal wire (150), a sealing tightening strap hole (160), a sealing tightening strap (170), a temperature sensor (180), and a motor driving part (190). The detailed composition is explained below. The body portion (110) is configured to house a battery and may be configured so that the top is open. Here, the battery may be a battery that does not burn easily in a fire, such as a lithium battery. The present invention can be applied to small / medium / large batteries in various fields such as aircraft, submarines, containers, ships, trains, and subways. The lid portion (120) may be configured to cover the open top of the body portion (110). The lid portion (120) may be configured with a zipper or Velcro. The body (110) and the lid (120) may be composed of a fire extinguishing cloth that does not burn at a temperature of 1000°C to 1500°C. At this time, the body (110) and the lid (120) may be composed of a double-layer fire extinguishing cloth that is advantageous for withstanding fire. The bag strap (130) can be provided on the side of the body part (110). A plurality of fire extinguishing agent pouches (140) may be provided on the inner surface of the body part (110) and the inner surface of the lid part (120), respectively. The fire extinguishing agent pouch (140) may be configured to release a extinguishing agent composition in case of fire in the battery. The metal wire (150) may be provided to contact each of the multiple fire extinguishing agent pouches (140). Here, as shown in FIG. 4, the fire extinguishing agent pouch (140) may be composed of a vinyl material part (141) in the part where the metal wire (150) comes into contact. The metal wire (150) easily rises in temperature during a battery fire, and the vinyl material part (141) in contact with the metal wire (150) melts immediately, allowing the penetration fire extinguishing agent composition to be released immediately. Even if a fire occurs in a specific part of the battery, heat is easily conducted through the metal wire (150) so that the vinyl material part (141) of all fire extinguishing agent pouches (140) melts and the infiltration fire extinguishing agent composition can be released at once. The sealing strap holes (160) can be configured to be formed on the upper side of the body part (110) and the lower side of the lid part (120), respectively. The sealing strap (170) can be configured to be inserted by alternately penetrating the sealing strap hole (160) formed on the upper side of the body part (110) and the sealing strap hole (160) formed on the lower side of the lid part (120). The sealing strap (170) can be configured to be inserted into the sealing strap hole (160) in a zigzag shape. The temperature sensor (180) can be configured to measure the temperature inside the battery storage equipment (100) in real time. The motor drive unit (190) is configured to be connected to one end of the sealing strap (170) and can be configured to determine whether the temperature measured in real time by the temperature sensor (180) is above a predetermined temperature. And the motor drive unit (190) can be configured to seal the gap between the body unit (110) and the lid unit (120) by using a gear to wind and pull one end of the sealing tightening strap (170) when the temperature exceeds a predetermined temperature as a result of the judgment. As shown in FIGS. 1 to 3, the motor drive unit (190) can be configured to seal the gap between the body part (110) and the lid part (120) by pulling and tightening the sealing tightening strap (170). Through this rapid sealing operation, oxygen can be prevented from entering the battery storage equipment (100) and fire extinguishing operations can be facilitated. Meanwhile, the body part (110) can be filled with the infiltration fire extinguishing agent composition without the fire extinguishing agent pouch (140), and in the event of a fire in the battery, the fire can be quickly extinguished by placing the battery into the battery storage equipment (100). At this time, the body portion (110) and the lid portion (120) may be made of plastic material. As described above, instead of storing the infiltration fire extinguishing agent composition in the fire extinguishing agent pouch (140), a predetermined amount of the infiltration fire extinguishing agent composition may be stored inside the body portion (110). For example, if a fire occurs in an auxiliary battery, the lid portion (120) can be opened to quickly insert the auxiliary battery into the body portion (110). At this time, the infiltration fire extinguishing agent composition stored inside the body portion (110) may foam due to the heat generated by the fire, and the fire caused by the auxiliary battery can be quickly suppressed by the foam. Meanwhile, on the inner side of the body part (110), a metal component such as stainless steel may be applied or installed to prevent the body part (110) itself from melting due to heat. Alternatively, an inner plate (not shown) composed of a metal component such as stainless steel may be located. That is, the battery storage equipment equipped with a fire suppression function according to the present invention has the advantage of being able to quickly respond to fires of batteries occurring outside, in addition to fires of lithium batteries stored inside the body part (110), and can prevent the battery storage equipment itself from melting through the inner plate. Meanwhile, a single or multiple fire extinguishing agent pouch (140) may be provided on the outer surface of the body part (110) or the lid part (120), respectively. A predetermined infiltration fire extinguishing agent composition may be stored in the fire extinguishing agent pouch (140). Additionally, the fire extinguishing agent pouch (140) may be connected to the interior of the battery storage equipment (100) through a through hole (not shown) formed in the body part (110) or the lid part (120). At this time, a button (not shown) may be additionally provided on the outer surface of the body part (110) or the lid part (120) to control the infiltration fire extinguishing agent composition stored in the fire extinguishing agent pouch (140) so that it can be discharged into the body part (110). For example, if a fire occurs in the battery, the battery can be drawn into the body part (110) of the battery storage equipment. At this time, when the button is pressed, the infiltration fire extinguishing agent composition stored inside the fire extinguishing agent pouch (140) can be discharged into the body part (110) of the battery storage equipment through the through hole. Meanwhile, the discharge of the infiltration extinguishing agent composition into the body part (110) may be performed automatically instead of manually pressing the above button. For example, if a battery that has caught fire is introduced into the body (110) of the battery storage equipment, the temperature sensor (180) can measure the internal temperature of the battery storage equipment in real time. The temperature sensor (180) can determine whether the internal temperature of the battery storage equipment is above a predetermined temperature. If it is above the predetermined temperature, the temperature sensor (180) can transmit a control command to the motor drive unit (190). The motor drive unit (190) can control the infiltration fire extinguishing agent composition stored inside the fire extinguishing agent pouch (140) to be discharged into the body part (110) of the battery storage equipment through the through hole based on a control command. Meanwhile, just as in the case where a predetermined infiltration fire extinguishing agent composition is stored inside the battery storage equipment described above, it goes without saying that a metal component such as stainless steel may be separately applied or installed on the inner side of the body part (110) to achieve fire resistance or heat resistance. That is, the present invention is configured so that a penetrating fire extinguishing agent composition is discharged into the interior of the battery storage equipment by manually pressing a button, or so that a penetrating fire extinguishing agent composition is automatically discharged into the interior of the battery storage equipment by detection of a temperature sensor (180), and thus has the advantage of enabling effective response to battery fires even when there are no people nearby. Below, a composition of an infiltration extinguishing agent is described in detail as a extinguishing agent. First, in this specification, the term "penetrating extinguishing agent" refers to an agent used by mixing it with water to enhance water penetration, dispersion, and emulsification capabilities. Additionally, the term "penetrating aqueous solution" refers to an aqueous solution obtained by mixing a penetrating extinguishing agent with water. Furthermore, a general fire refers to a fire in which common combustible materials such as wood, textiles, paper, rubber, and plastics burn, leaving behind ash. The fire type indicator for fire extinguishers suitable for general fires is marked with 'A'. In this specification, "oil fire (Class B fire)" refers to a fire in which no ash remains after burning of oils such as flammable liquids, combustible liquids, petroleum grease, tar, oil, oil-based paints, solvents, lacquers, alcohols, and flammable gases. The fire type designation for an extinguisher suitable for oil fires is indicated as 'B'. In addition, in this specification, "kitchen fire (Class K fire)" refers to a fire occurring in a kitchen using cooking equipment that handles animal or vegetable oils. The fire type designation for fire extinguishers suitable for kitchen fires is indicated by 'K'. One embodiment of the present invention provides a penetrating fire extinguishing agent composition comprising 5 to 15 weight% of a metal carbonate, 1 to 10 weight% of urea, 3 to 10 weight% of a freezing point depressant, 0.5 to 10 weight% of an amphoteric surfactant, and 50 to 90 weight% of water. In one embodiment of the present invention, the composition may have a surface tension of less than 33 mN / m. In one embodiment of the present invention, the composition may have a hydrogen ion concentration (pH) of 6 to 9 at a temperature of 19.5 to 20.5 degrees, and more specifically, a pH of 7.5 to 8.5. The composition of the present invention may have a pH of 6 to 9, specifically a pH of 7.5 to 8.5, even without a pH adjuster. pH regulators consist of citric acid (C6H8O7), malonic acid (C3H4O4), maleic acid (C4H4O4), gluconic acid (C6H12O7), tannic acid (C76H52O46), oxalic acid (C2H2O4), tarric acid (C4H6O6), gluconic acid (C6H12O7), malic acid (C4H6O5), lactic acid (C3H6O3), acetic acid (C2H4O2), fumaric acid (C4H4O4), succinic acid (C4H6O4), adipic acid (C6H10O4), and salicylic acid (C7H6O3). There may be one or more selected from the military. In one embodiment of the present invention, the composition may not undergo solution separation at a temperature of 0 to 50 degrees. In addition, the infiltration aqueous solution obtained by mixing the infiltration extinguishing agent composition of the present invention with water may not undergo solution separation at a temperature of 0 to 50 degrees. If solution separation occurs, it is not suitable as an infiltration extinguishing agent. Here, the phenomenon of solution separation includes all similar phenomena such as precipitation and clouding. In one embodiment of the present invention, the metal carbonate may be included in an amount of 5 to 15 weight percent based on the total weight of the penetrating fire extinguishing agent composition. If the content of the metal carbonate is less than 5 weight percent, there is a problem of precipitating the penetrating fire extinguishing agent composition, and if the content exceeds 15 weight percent, the strong alkalinity does not meet the standard of a penetrating fire extinguishing agent with a pH of 6 to 9, resulting in reduced extinguishing power. Since the content of the metal carbonate is 5 to 15 weight percent, the present invention has the advantage of being able to maintain the pH within the range of 6 to 9 without a pH adjuster. The metal carbonate is not particularly limited as long as it is a substance in which a carbonate and a metal are combined, but specifically, it may be one or more selected from the group consisting of potassium bicarbonate (KHCO3), potassium carbonate (K2CO3), sodium carbonate (Na2CO3), magnesium carbonate (MgCO3), cobalt carbonate (CoCO3), and sodium hydrogen carbonate (NaHCO3), and more specifically, it may be potassium bicarbonate. The above metal carbonate decomposes due to heat during a fire to produce hydrogen and carbon dioxide, and

[0047] The generated carbon dioxide combines with oxygen to produce an ionization effect that reduces the oxygen concentration around the fire source. Additionally, it causes the amphoteric surfactant to form bubbles, which has the effect of providing powerful fire extinguishing and suffocating action. If phosphates, sulfates, etc., are used instead of carbonates, solution separation phenomena such as the formation of precipitates may occur, which may reduce the fire extinguishing function, and the pH may fall outside the range of 6 to 9, making it unsuitable as a precipitation fire extinguishing agent. In one embodiment of the present invention, the element may be included in an amount of 1 to 10 weight percent based on the total weight of the penetration extinguishing agent composition. The element can serve as a stabilizer and a freezing point lowering agent. The element helps to cool down to below the ignition point. If ammonia is used instead of the element, it is undesirable as it generates a bad odor and may cause environmental problems due to residual components. If the content of the element is less than 1 weight percent, it is difficult to obtain sufficient stabilizer or cooling effects, which causes solution separation and reduces the freezing point lowering effect. Furthermore, if the content of the element is higher than 10 weight percent, miscibility with other components decreases, and foaming properties and foam stability deteriorate. In one embodiment of the present invention, the freezing point depressant may be included in an amount of 3 to 10 weight percent based on the total weight of the penetration extinguishing agent composition. If the content of the freezing point depressant is less than 3 weight percent, the effect of lowering the freezing point decreases, causing the extinguishing agent to freeze, making it unsuitable. Furthermore, if the content of the freezing point depressant exceeds 10 weight percent, the freezing point depressant itself burns as an organic material, causing changes in physical properties and increasing flammability, which ultimately leads to a decrease in extinguishing ability. According to one embodiment of the present invention, the freezing point depressant may be ethylene glycol (HO(CH2)2OH), propylene glycol (C3H8O2), polyethylene glycol (H-[OCH2CH2]n-OH), or glycerin (C3H5O3). In one embodiment of the present invention, the amphoteric surfactant may be included in an amount of 0.5 to 10 weight percent based on the total weight of the penetration extinguishing agent composition. If the content of the amphoteric surfactant is less than 0.5 weight percent, the effect of lowering surface tension is negligible, and if it is 10 weight percent or more, there is a problem that the surfactant does not dissolve and floating matter is generated. The above water has a fire extinguishing function in itself and functions as a solvent that dissolves other components. The above water is not particularly limited and includes purified and / or unpurified water. The above water may be selected from, for example, tap water, groundwater, distilled water and / or purified water. Such water may be included in an amount of 50 to 90 weight percent based on the total weight of the fire extinguishing agent composition according to the present invention. In one embodiment of the present invention, the composition may further include 0.03 to 2 weight percent of an additive. The above additive may specifically be an organic solvent, and more specifically, methanol (CH3OH), ethanol (C2H6O), isopropyl alcohol (C3H8O), methyl ethyl ketone (C4H8O), formamide (CH3NO), methylformamide (C2H5NO), acetamide (C2H5NO), N-methylacetamide (C3H7NO), dimethylacetamide (C4H9NO), methyl cellosolve (C3H8O2), ethyl cellosolve (C4H10O2), butyl cellosolve (C6H14O2), diethylene glycol monobutyl ether (C8H18O3), It may be one or more selected from the group consisting of diethylene glycol monoethyl ether (C6H14O3), ethylene carbonate (C3H4O3), propylene carbonate (C4H6O3), dimethyl sulfoxide (C2H6OS), and acetonitrile (C2H3N). More specifically, the additive may include ethanol, methyl ethyl ketone, and isopropyl alcohol together. In addition, the penetrating fire extinguishing agent according to the present invention may further include additives in addition to the above components. Such additives can improve fire extinguishing performance and dispersion stability. Furthermore, fire extinguishing performance can be improved by strengthening the cohesive force between bubbles, thereby preventing the bubble layer from breaking or flowing. The penetrating fire extinguishing agent composition according to the present invention can be applied to Class A fires (general fires), Class B fires (oil fires), as well as Class K fires (kitchen fires). The penetrating fire extinguishing agent composition according to the present invention generates hydrogen to absorb oxygen during fire suppression and continuously generates bubbles resistant to flames to block oxygen from the flame source, thereby exhibiting powerful fire extinguishing capabilities. Furthermore, after extinguishing, it transforms into nitrogen, phosphoric acid, and potassium, which are harmless to the human body and do not contaminate the soil, making it environmentally friendly. When the penetration extinguishing agent composition falls into soil or water, it is easily decomposed by microorganisms into nitrogen, phosphate, and potassium, so it does not have a negative impact on the soil environment and can be used as plant nutrients. Since the penetration extinguishing agent composition of the present invention has the advantage of being eco-friendly, it differs significantly from reinforced liquid or powder extinguishing agents that cause serious damage to the environment. Furthermore, since the penetrating fire extinguishing agent composition according to the present invention is a penetrating agent, it can be used by mixing it with water, thereby possessing all the advantages of a water-based fire extinguishing agent. That is, it has the effect of excellent cooling action that lowers the ignition point temperature. In addition, it has the advantage of excellent oxygen blocking effect against the flame source due to an ionization action that generates hydrogen and absorbs oxygen to block the oxygen required for ignition. Above all, it has the advantage of blocking oxygen from the flame source by continuously generating flame-resistant bubbles. Although the invention has been described with reference to the above embodiments, those skilled in the art will understand that various modifications and changes can be made to the invention without departing from the spirit and scope of the invention as set forth in the following claims.

Claims

1. In a battery storage device equipped with a fire suppression function, A body part with an open top to accommodate a battery; A lid portion covering the open upper part of the above body portion; and A plurality of fire extinguishing agent pouches provided on the inner surface of the body portion or the lid portion and releasing a penetration fire extinguishing agent composition in the event of a fire in the battery, or provided on the outer surface of the body portion or the lid portion and storing the penetration fire extinguishing agent composition; Battery storage equipment equipped with fire suppression capabilities.

2. In Paragraph 1, A fire suppression function is provided, characterized by being configured to further include a bag strap provided on the side of the body part, and The infiltration extinguishing agent composition is discharged into the battery storage equipment by manual pressing of a button or automatically discharged into the battery storage equipment by detection of a temperature sensor, Battery storage equipment equipped with fire suppression capabilities.

3. In claim 1, the above-mentioned infiltration extinguishing agent composition is, Metal carbonate 5~10.9 wt%; Element 1~10 wt%; 3~10 wt% of freezing point depressant; 0.5 to 10 wt% of amphoteric surfactant; and Composed to contain 76.7 to 90 weight percent water, Battery storage equipment equipped with a fire suppression function.

4. In a battery storage device equipped with a fire suppression function, A body part with an open top for housing a battery; and It includes a lid portion covering the open upper part of the above body portion; and The above body part is, It is configured to contain a predetermined amount of a penetrating fire extinguishing agent composition for extinguishing a fire in the event of a fire in the above-mentioned battery, and The inner surface of the body part and the lid part is, A further comprising an inner plate made of a metal material to withstand the heat generated in the event of a fire of the above-mentioned battery, Battery storage equipment equipped with fire suppression capabilities.

5. In Paragraph 1, The above-mentioned infiltration extinguishing agent composition is, Metal carbonate 5~10.9 wt%; Element 1~10 wt%; 3~10 wt% of freezing point depressant; 0.5 to 10 wt% of amphoteric surfactant; and Composed to contain 76.7 to 90 weight percent water, Battery storage equipment equipped with a fire suppression function.

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