Battery fire extinguishing device, fire extinguishing system, and fire extinguishing method

Abstract

The application discloses a battery fire extinguishing device, a fire extinguishing system and a fire extinguishing method. When in use, the cooling extinguishing agent is stored in the storage chamber of the cooling assembly coated on the periphery of the battery, and the cooling assembly is supported on the periphery of the battery by using the liquid-filled heat-sensitive glass structure filled with the heat-expandable agent. When the battery reaches the preset temperature, the heat-expandable agent expands and bursts the corresponding liquid-filled heat-sensitive glass structure, so that the cooling extinguishing agent stored in the storage chamber communicated with the corresponding opening can be discharged to the battery through the corresponding opening and the battery can be extinguished, so that the liquid-filled heat-sensitive glass can burst when the battery temperature is too high, and the cooling extinguishing agent stored in the storage chamber can be discharged to the battery through the opening and the battery can be extinguished, thereby avoiding the fire caused by the high temperature of the battery, and ensuring the safety of the battery.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a battery fire-fighting device, fire-fighting system, and fire-fighting method. Background Technology

[0002] Electrification is a major trend in construction machinery, and the stability and safety of batteries, as an essential power source, have always been unresolved issues for manufacturers. In particular, the operating scenarios (conditions) of construction machinery are much more complex and harsher than those of passenger vehicles, such as prolonged exposure to sun and rain, which further increases the incidence of accidents (failures).

[0003] In related technologies, research on battery fire prevention mainly focuses on front-end battery thermal management, typically by reducing battery temperature to prevent potential fires caused by overheating. However, in such technologies, if the battery temperature becomes too high and is not reduced, a fire hazard arises, and currently, there is no technology to solve this problem. Summary of the Invention

[0004] The main objective of this invention is to provide a battery fire-fighting device, fire-fighting system, and fire-fighting method, which aims to solve the technical problem that there is currently no relevant technology that can solve the problem of battery fire when the battery temperature is too high and does not decrease.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a battery fire-fighting device, comprising:

[0007] A cooling component, wherein the cooling component covers the outer periphery of the battery, and a storage chamber is formed within the cooling component, the storage chamber being pressurized and storing a fire extinguishing agent, wherein the fire extinguishing agent is a liquid-based fire extinguishing agent or a gas-based fire extinguishing agent; and...

[0008] A support assembly is provided on the outer periphery of the battery and is connected between the cooling assembly and the battery. The support assembly is provided with a liquid-filled thermistor glass structure, which forms a channel. The channel stores a thermally expanding solvent that is immiscible with the fire extinguishing agent. The cooling assembly forms an opening that connects the storage chamber to the channel.

[0009] The thermally expanding solvent is used to expand when the battery reaches a preset temperature, thereby cracking the liquid-filled thermosensitive glass structure and causing the fire extinguishing agent in the storage chamber to be released through the opening and sprayed onto the battery to perform fire extinguishing operations.

[0010] Optionally, the number of support components is multiple, and each support component further includes a first connecting support. The first connecting support is detachably installed on the outer wall of the battery, and the first connecting support is sealed to one end of the liquid-filled thermosensitive glass structure facing the battery.

[0011] Optionally, the support assembly further includes a second connecting support, which is detachably installed on the cooling assembly. The second connecting support has a hole communicating with the corresponding opening. One end of the liquid-filled thermosensitive glass structure facing the cooling assembly extends into the hole and is sealed to the inner wall of the hole. The hole communicates the channel with the corresponding opening.

[0012] Optionally, the hole includes a first hole segment and a second hole segment that are interconnected. The first hole segment is connected to the corresponding opening, and the second hole segment is connected to the channel. The diameter of the second hole segment is larger than that of the first hole segment to form an installation step between the first hole segment and the second hole segment. One end of the liquid-filled thermosensitive glass structure facing the cooling component extends into the second hole segment and is sealed to the inner wall of the second hole segment. The end of the liquid-filled thermosensitive glass structure facing the cooling component abuts against the step.

[0013] Optionally, the liquid-filled thermosensitive glass structure includes:

[0014] A liquid-filled thermistor glass tube, wherein the channel is formed inside the liquid-filled thermistor glass tube, and the end of the liquid-filled thermistor glass tube facing the battery is sealed to the first connecting support, and the end of the liquid-filled thermistor glass tube facing the cooling component extends into the corresponding hole and is sealed to the inner wall of the hole.

[0015] An elastic element is sleeved on the outer periphery of the liquid-filled thermosensitive glass tube, and the two ends of the elastic element are respectively connected to the first connecting support and the second connecting support;

[0016] The thermally expanding solvent is used to expand when the battery reaches a preset temperature, thereby rupturing the corresponding liquid-filled thermosensitive glass tube, so that the fire extinguishing agent in the storage chamber can be released through the corresponding opening and sprayed onto the battery to perform fire extinguishing operations.

[0017] Optionally, the liquid-filled thermistor glass tube forms multiple bursting tubes sequentially distributed along the direction from the battery to the cooling component. A crack-preventing wall is provided between any two adjacent bursting tubes to separate the corresponding two bursting tubes. The cavity of each bursting tube forms the channel, and the cavity of each bursting tube is filled with the heat-expanding solvent. Along the direction from the battery to the cooling component, the heat-expanding solvent filling the cavities of the multiple bursting tubes is used to sequentially expand upon heating when the battery reaches a preset temperature, thereby sequentially bursting the bursting tubes along the direction from the battery to the cooling component.

[0018] Optionally, the cooling component includes:

[0019] Multiple cooling chambers are circumferentially spaced around the outer periphery of the battery, and each cooling chamber contains a storage chamber. At least one support assembly connects each chamber to the battery, and each chamber has an opening corresponding to the position of the support assembly, connecting the storage chamber to the channel.

[0020] A flexible connector is provided between any two adjacent cooling boxes.

[0021] Based on the same technical concept, in a second aspect, the present invention proposes a battery-powered fire suppression system, comprising:

[0022] Battery temperature management system;

[0023] A cooling system, which is connected to an external refrigeration unit, is arranged around the outer periphery of the battery, and is communicatively connected to the battery temperature management system.

[0024] A battery temperature detection system, wherein the battery temperature detection system is installed on the battery and is communicatively connected to the battery temperature management system; and,

[0025] The battery fire suppression device described in the first aspect is equipped with a communication module. The cooling component is arranged around the outer periphery of the cooling system. The cooling system forms a gap corresponding to the position of the support component. The end of the support component facing the battery passes through the corresponding gap to connect the cooling component to the battery. The battery fire suppression device is communicatively connected to the battery temperature management system through the communication module.

[0026] Based on the same technical concept, in a third aspect, the present invention also proposes a battery fire protection method, characterized in that it is applied to the battery fire protection system described in the first aspect;

[0027] The battery fire suppression method includes the following steps:

[0028] The battery temperature detection system detects the current temperature of the battery in real time and transmits the temperature information to the battery temperature management system.

[0029] The battery temperature management system determines whether the current temperature has reached the preset temperature based on the temperature information.

[0030] When the preset temperature is reached, it is determined whether the cooling system cools the battery according to the target instruction; wherein, the target instruction includes the valve opening instruction in the cooling system, the instruction for the compressor in the cooling system to operate at maximum power, and the instruction for the refrigeration mechanism to provide single-supply cooling to the battery;

[0031] If the cooling system cools the battery according to the target command, the thermal expansion agent of the battery fire-fighting device can expand and burst the corresponding liquid-filled thermosensitive glass structure to enable the battery fire-fighting device to perform fire-fighting operations on the battery.

[0032] Optionally, after the step of determining whether the cooling system cools the battery according to the target instruction when the preset temperature is reached, the method further includes:

[0033] If the cooling system fails to cool the battery according to the target command, the battery temperature management system is used to control the cooling system to cool the battery according to the target command.

[0034] Return to the step of controlling the battery temperature detection system to detect the current temperature of the battery in real time and transmit the temperature information to the battery temperature management system.

[0035] The above-described one or more technical solutions provided by this invention can have the following advantages or at least achieve the following technical effects:

[0036] This invention proposes a battery fire-fighting device, system, and method. In use, a cooling and extinguishing agent is stored in a storage chamber within a cooling component surrounding the battery. A liquid-filled thermosensitive glass structure filled with a thermal expansion agent supports the cooling component around the battery. When the battery reaches a preset temperature, the thermal expansion agent expands and ruptures the corresponding liquid-filled thermosensitive glass structure. This allows the cooling and extinguishing agent stored in the storage chamber, which communicates with the liquid-filled thermosensitive glass structure through an opening, to be released and sprayed onto the battery for fire suppression. This invention ensures that when the battery temperature is too high, the liquid-filled thermosensitive glass component ruptures, releasing the stored cooling and extinguishing agent from the opening to cool or extinguish the battery, preventing battery fires caused by overheating and ensuring battery safety. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the battery fire-fighting device as an example of the present invention;

[0039] Figure 2 for Figure 1 A schematic diagram of the structure of the battery-powered fire suppression system with supporting components, as shown in the example;

[0040] Figure 3 for Figure 2 A schematic diagram of the side structure of the support component in the example;

[0041] Figure 4 for Figure 3 A schematic diagram of the structure of the liquid-filled thermosensitive glass tube in the example;

[0042] Figure 5 for Figure 4 A schematic diagram of the cooling component in the example;

[0043] Figure 6 for Figure 5 The diagram below shows the structure of the cooling box.

[0044] Figure 7 This is a schematic diagram of the battery-powered fire suppression system as an example of the present invention;

[0045] Figure 8 for Figure 7A structural diagram illustrating the positional relationship between the battery and the cooling system in the example;

[0046] Figure 9 This is a flowchart illustrating a battery fire suppression method as an example of the present invention;

[0047] Figure 10 for Figure 9 The flowcharts show some specific embodiments of the battery fire suppression method exemplified in the example.

[0048] Explanation of reference numerals in the attached figures:

[0049] label name label name 100 Cooling components 232 First section 200 Support components 233 Second section 300 Battery 212 Liquid-filled thermosensitive glass tube 210 Liquid-filled thermosensitive glass structure 213 elastic element 110 storage chamber 214 ruptured pipe 211 aisle 130 Cooling box 120 Opening 140 Flexible connectors 220 First connecting support 10 Battery Temperature Management System 230 Second connecting support 20 Cooling system 231 Hole 30 Battery temperature detection system 21 gap 40 Battery fire suppression system 215 Crack-resistant wall

[0050] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0052] It should be noted that in the embodiments of the present invention, all directional indications (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0053] In this invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element. Furthermore, the meaning of "and / or" throughout the text includes three parallel options; for example, "A and / or B" includes option A, option B, or options where both A and B are satisfied.

[0054] In this invention, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

[0055] In this invention, if there are descriptions involving "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0056] In this invention, the use of suffixes such as "module," "component," "part," "unit," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" can be used interchangeably.

[0057] For those skilled in the art, the specific meanings of the above terms in this invention can be understood according to the specific circumstances. Furthermore, the technical solutions of the various embodiments can be combined with each other; however, this is based on the premise that those skilled in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0058] The inventive concept of the present invention will be further explained below with reference to some specific embodiments.

[0059] Reference Figures 1 to 10 This invention proposes a battery fire-fighting device, fire-fighting system, and fire-fighting method.

[0060] In one embodiment of the present invention, such as Figures 1 to 8As shown, this type of battery fire-fighting device 40 includes a cooling component 100 and a support component 200. The cooling component 100 covers the outer periphery of the battery 300, and a storage chamber 110 is formed inside the cooling component 100. The storage chamber 110 stores a fire extinguishing agent under pressure. The fire extinguishing agent is a liquid-based fire extinguishing agent or a gas-based fire extinguishing agent. The support component 200 is distributed around the outer periphery of the battery 300 and is connected between the cooling component 100 and the battery 300. A liquid-filled thermally sensitive glass structure 2 is provided on the support component 200. 10. The liquid-filled thermosensitive glass structure 210 has a channel 211, which stores a thermally expanding solvent that is immiscible with the fire extinguishing agent. The cooling component 100 has an opening 120 that connects the storage chamber 110 to the channel 211. The thermally expanding solvent is used to expand when the battery 300 reaches a preset temperature, thereby shattering the liquid-filled thermosensitive glass structure 210 and causing the fire extinguishing agent in the storage chamber 110 to be depressurized and sprayed onto the battery 300 through the opening 120 to perform fire extinguishing operations on the battery 300.

[0061] In this embodiment, the liquid-filled thermosensitive glass structure 210 is specifically filled with a thermal expansion agent. The thermal expansion agent expands when heated to the point that the rupture temperature of the liquid-filled thermosensitive glass structure 210 is a preset temperature. That is, when the temperature of the battery 300 reaches the preset temperature, the thermal expansion agent expands to the point that the liquid-filled thermosensitive glass structure 210 ruptures. When the liquid-filled thermosensitive glass structure 210 ruptures, the cooling and extinguishing agent stored in the storage chamber 110 will be directly depressurized and sprayed onto the battery 300 from the opening 120 to achieve fire-fighting operations such as cooling the battery 300 or directly extinguishing the fire.

[0062] Specifically, the thermally expanding solvent is used to expand when the battery 300 reaches a preset temperature, causing it to rupture the corresponding liquid-filled thermosensitive glass structure 210. This allows the extinguishing agent in the storage chamber 110 to be depressurized and sprayed onto the battery 300 through the corresponding opening 120 for fire suppression. More specifically, when the liquid-filled thermosensitive glass structure 210 ruptures, the extinguishing agent stored in the storage chamber will be depressurized and sprayed onto the battery through the opening due to the rupture of the channel, thus achieving fire suppression of the battery. However, in this embodiment, to ensure effective fire suppression, the distance between the cooling component and the battery should not be too large; the specific distance can be determined according to actual needs. It should be clearly stated that the specific distance should not exceed 10cm, and preferably should not exceed 5cm.

[0063] It should be specifically and clearly stated that, in this embodiment, the heat-expanding agent can be, but is not limited to, existing materials used in fire protection that can expand or vaporize under heating. This embodiment only applies these materials without any improvement or design of their properties; therefore, further details about the heat-expanding agent are omitted here. However, it can be exemplified that the heat-expanding agent in this embodiment is a low-alkyl homologue, a medium-chain long aliphatic hydrocarbon, a low-alicyclic hydrocarbon, a halogenated hydrocarbon such as tetrachloroethylene, esters of ketone carboxylic acids, and simple low-ketone compounds, or a mixture selected from other readily soluble liquids. Furthermore, the example thermal expansion agent can be of various types, each causing the liquid-filled thermosensitive glass structure 210 to rupture at a different temperature. That is, multiple rupture tubes 214 can be arranged in the direction from the battery 300 to the cooling component 100, and the thermal expansion agent filling each rupture tube 214 causes the rupture temperature of the corresponding rupture tube 214 to increase sequentially in the direction from the battery 300 to the cooling component 100. Simultaneously, the example cooling extinguishing agent can be, but is not limited to, liquid-based or gas-based extinguishing agents capable of cooling and extinguishing fires in the prior art. This embodiment only applies these agents and does not involve any improvement or design of their materials; therefore, they will not be elaborated upon here. However, it can be exemplified that the cooling extinguishing agent used in this embodiment can be, but is not limited to, gaseous cooling extinguishing agents such as liquid dry ice or liquid nitrogen dioxide, water-based extinguishing agents, foam extinguishing agents, or dry powder extinguishing agents.

[0064] Of course, it should also be clarified that since multiple support components 200 are provided, and the cooling component 100 is provided with openings 120 at the positions corresponding to each support component 200, the temperature change of the battery 300 may be limited to a certain area. That is, the temperature rise of the battery 300 may start from a certain area. Therefore, in the specific implementation of the present invention, the thermal expansion agent inside the liquid-filled thermistor glass structure 210 in the temperature rise area may be made to expand under heat first, so that the corresponding liquid-filled thermistor glass structure 210 may crack. Specifically, the cooling component 100 may be used to first perform fire-fighting operations on the temperature rise area of ​​the battery 300, so as to avoid the entire battery 300 being scrapped due to the untimely fire-fighting operation.

[0065] In this embodiment, during use, a cooling and extinguishing agent is stored in the storage chamber 110 of the cooling component 100 covering the outer periphery of the battery 300. The cooling component 100 is then supported on the outer periphery of the battery 300 by a liquid-filled thermosensitive glass structure 210 filled with a thermal expansion agent. When the battery 300 reaches a preset temperature, the thermal expansion agent expands and ruptures the corresponding liquid-filled thermosensitive glass structure 210, causing the storage chamber 110, which communicates with the liquid-filled thermosensitive glass structure 210 through the opening 120, to release the cooling agent. The stored cooling and extinguishing agent can be depressurized and sprayed onto the battery 300 through the corresponding opening 120 to perform fire-fighting operations on the battery 300. This invention enables the liquid-filled thermosensitive glass component to shatter when the battery 300 temperature is too high, allowing the cooling and extinguishing agent stored in the storage chamber 110 to be depressurized and sprayed onto the battery 300 through the opening 120 to perform fire-fighting operations on the battery 300. This avoids the battery 300 from catching fire due to excessive temperature and ensures the safety of the battery 300.

[0066] In some specific embodiments, the support assembly 200 further includes a first connecting support 220, which is detachably mounted on the outer wall of the battery 300 and is sealed to the end of the liquid-filled thermosensitive glass structure 210 facing the battery 300.

[0067] In this embodiment, by providing a first connecting support 220 on the side of the support component 200 facing the battery 300, and installing the first connecting support 220 on the outer wall of the battery 300, and sealing the end of the liquid-filled thermal glass structure 210 facing the battery 300 with the first connecting support 220, the battery fire-fighting device 40 of this invention can be directly installed on the existing battery 300, reducing the modification cost. At the same time, the sealed connection method also prevents the thermal expansion agent stored in the liquid-filled thermal glass structure 210 from being depressurized and sprayed out from the end facing the battery 300 when the liquid-filled thermal glass structure 210 has not ruptured, thus improving the safety of the battery fire-fighting device 40.

[0068] It should be specifically and clearly stated that, in this embodiment, the first connecting support 220 is preferably made of metal to prevent deformation or melting of the first connecting support 220 under high temperature conditions. Of course, in this embodiment, the method of detachably connecting the first connecting support 220 to the outer wall of the battery 300 also allows the present invention to replace or disassemble the battery fire-fighting device 40 as needed.

[0069] In some specific embodiments, there are multiple support components 200, and each support component 200 further includes a second connecting support 230. The second connecting support 230 is detachably installed on the cooling component 100. The second connecting support 230 is provided with a hole 231 communicating with the corresponding opening 120. One end of the liquid-filled thermosensitive glass structure 210 facing the cooling component 100 extends into the hole 231 and is sealed to the inner wall of the hole 231. The hole 231 communicates the channel 211 with the corresponding opening 120.

[0070] In this embodiment, by providing a second connecting support 230 on the side of the support component 200 facing the cooling component 100, and making the second connecting support 230 detachably connected to the opening 120 on the cooling component 100, the end of the liquid-filled thermosensitive glass structure 210 facing the cooling component 100 is sealed to the second connecting support 230. This enables the direct installation of the battery fire-fighting device 40 of this invention onto the existing cooling component 100, reducing modification costs. At the same time, the sealed connection method also prevents the thermal expansion agent stored in the liquid-filled thermosensitive glass structure 210 from affecting the safety of the cooling component 100 when the liquid-filled thermosensitive glass structure 210 ruptures, thus improving the safety of the battery fire-fighting device 40.

[0071] It should be specifically and clearly stated that, in this embodiment, the second connecting support 230 is preferably made of metal to prevent deformation or melting of the second connecting support 230 under high temperature conditions. Of course, in this embodiment, the way the second connecting support 230 is detachably connected to the outer wall of the cooling component 100 also allows the present invention to replace or disassemble the support component 200 of the present invention as needed.

[0072] Of course, it should be clarified that in this embodiment, the hole 231 includes a first hole segment 232 and a second hole segment 233 that are interconnected. The first hole segment 232 is connected to the corresponding opening 120, and the second hole segment 233 is connected to the channel 211. The diameter of the second hole segment 233 is larger than the diameter of the first hole segment 232, so as to form an installation step between the first hole segment 232 and the second hole segment 233. The end of the liquid-filled thermosensitive glass structure 210 facing the cooling component 100 extends into the second hole segment 233 and is sealed to the inner wall of the second hole segment 233. The end of the liquid-filled thermosensitive glass structure 210 facing the cooling component 100 abuts against the step.

[0073] For ease of understanding, in this embodiment, by setting a second connecting support 230 and a first connecting support 220, and making the first connecting support 220 detachably connected to the outer wall of the battery 300, and the second connecting support 230 detachably connected to the cooling component 100, the fuel cell of this invention can replace the liquid-filled thermistor glass structure 210 by disassembling the first connecting support 220 and the second connecting support 230 after a fire, ensuring the reusability of the cooling component 100, improving the practicality of the cooling component 100, and reducing production costs.

[0074] In this embodiment, by setting the hole 231 as a first hole segment 232 and a second hole segment 233 that are interconnected, and by making the liquid-filled thermosensitive glass structure 210 penetrate into the second hole segment 233 and be sealed to the inner wall of the second hole segment 233, the present invention can improve the stability of the liquid-filled thermosensitive glass structure 210 through the second hole segment 233.

[0075] In some exemplary embodiments, the liquid-filled thermosensitive glass structure 210 includes:

[0076] A liquid-filled thermistor glass tube 212 has a channel 211 formed inside it. The end of the liquid-filled thermistor glass tube 212 facing the battery 300 is sealed to the first connecting support 220. The end of the liquid-filled thermistor glass tube 212 facing the cooling component 100 extends into the corresponding hole 231 and is sealed to the inner wall of the hole 231.

[0077] The elastic element 213 is sleeved on the outer periphery of the liquid-filled thermosensitive glass tube 212, and the two ends of the elastic element 213 are respectively connected to the first connecting support 220 and the second connecting support 230.

[0078] The thermally expanding solvent is used to expand when the battery 300 reaches a preset temperature, thereby rupturing the corresponding liquid-filled thermosensitive glass tube 212, so that the fire extinguishing agent in the storage chamber 110 is depressurized and sprayed onto the battery 300 through the corresponding opening 120 to carry out fire extinguishing operations on the battery 300.

[0079] In this embodiment, by setting a liquid-filled thermal glass tube 212 and an elastic element 213, and sleeve the elastic element 213 on the outer periphery of the liquid-filled thermal glass tube 212, when the liquid-filled thermal glass tube 212 expands and bursts, the cooling component 100 and the battery 300 will not detach from each other through the connection function of the elastic element 213, thereby improving the safety of the battery fire-fighting device 40 of the present invention.

[0080] It should be specifically and clearly stated that, in this embodiment, by providing an elastic element 213 on the outer periphery of the liquid-filled thermistor glass tube 212, the cooling component 100 can move towards the battery 300 first under the action of the elastic element 213 when the liquid-filled thermistor glass tube 212 ruptures, thereby reducing the distance between the battery 300 and the cooling component 100. It is clear that, in this embodiment, the example elastic element 213 can be, but is not limited to, a material with elastic restoring function such as a spring in the prior art.

[0081] Of course, in the exemplary embodiment, the liquid-filled thermistor glass tube 212 forms multiple burst tubes 214 that are sequentially distributed along the direction from the battery 300 to the cooling component 100. A crack-preventing wall 215 is provided between any two adjacent burst tubes 214 to separate the corresponding two burst tubes 214. The cavity of each burst tube 214 forms a channel 211, and the cavity of each burst tube 214 is filled with a heat-expanding agent. The heat-expanding solvent filled in the cavity of the multiple burst tubes 214 along the direction from the battery 300 to the cooling component 100 is used to sequentially expand when the battery 300 reaches a preset temperature, so as to sequentially burst the burst tubes 214 along the direction from the battery 300 to the cooling component 100.

[0082] In this embodiment, by setting multiple bursting tubes 214 and arranging them sequentially along the direction from the battery 300 to the cooling component 100, and then filling each bursting tube 214 with a heat-expanding agent sequentially along the direction from the battery 300 to the cooling component 100, the present invention can, when in use, burst the bursting tubes 214 located near the battery 300 first according to the temperature of the battery 300, thereby realizing the function of activating the battery fire-fighting device 40 of the present invention to cool the battery 300 at a lower temperature.

[0083] It should be specifically and clearly stated that, in this embodiment, in the example multi-segment rupture tube 214, the thermal expansion agent that causes the liquid-filled thermistor glass tube 212 to rupture at a temperature that increases in the direction from the battery 300 toward the cooling component 100, or it can be the same thermal expansion agent, but regardless of the type of thermal expansion agent, the order in which the liquid-filled thermistor glass tube 212 ruptures is sequential from the battery 300 toward the cooling component 100.

[0084] Of course, for ease of understanding, in this embodiment, the bursting tubes 214 are arranged sequentially along the direction from the battery 300 to the cooling component 100. Then, a heat-expanding agent is sequentially filled into each bursting tube 214 along the direction from the battery 300 to the cooling component 100. The heat-expanding agent is arranged such that the bursting temperature of the liquid-filled thermistor glass tube 212 increases progressively from the battery 300 toward the cooling component 100. This allows the invention to selectively burst according to the temperature inside the battery during use. At the same time, due to the liquid-filled thermistor glass tube 212 and its... The thermal expansion agent inside is set in a gradient, so that when the present invention is used, the rupture tube 214 corresponding to the explosion is ruptured according to the internal temperature of the battery, so that the extinguishing agent in the rupture tube 214 after the explosion can extinguish the fire in the corresponding area. Since the size of the channel connecting each rupture tube to the storage chamber 110 is not the same, the present invention can achieve the function of directional cooling of the high temperature area of ​​the battery when in use, which can avoid contamination of the non-fired area of ​​the battery, avoid waste of cooling extinguishing agent, and improve the efficiency of fire fighting operation.

[0085] In some specific embodiments, the cooling component 100 includes:

[0086] Multiple cooling chambers 130 are circumferentially spaced around the outer periphery of the battery 300, and each cooling chamber 130 contains a storage chamber 110. At least one support component 200 connects each chamber to the battery 300, and each chamber has an opening 120 corresponding to the support component 200, connecting the storage chamber 110 to a channel 211; and...

[0087] Flexible connector 140, at least one flexible connector 140 is connected between any two adjacent cooling boxes 130.

[0088] In this embodiment, by setting up multiple cooling chambers 130 and distributing them circumferentially around the outer periphery of the battery 300, each cooling chamber 130 has an opening 120 corresponding to the position of the support component 200, connecting the storage chamber 110 and the channel 211. This allows the invention to perform fire suppression operations on the battery 300 in its corresponding area through the cooling chambers 130 during use, ensuring the accuracy of the fire suppression operation. Simultaneously, at least one flexible connector 140 is connected between each cooling chamber 130. This ensures that if the liquid-filled thermosensitive glass structure 210 corresponding to a cooling chamber 130 ruptures, only that cooling chamber 130 needs to be brought close to the battery 300, thus ensuring the stability of the entire battery fire suppression device 40.

[0089] It should be specifically and clearly stated that the flexible connector 140 exemplified in this embodiment may be, but is not limited to, a structure or device with flexible effect or function such as steel rope, iron chain or flexible hinge in the prior art, which will not be described in detail here.

[0090] Based on the same technical concept, in a second aspect, the present invention proposes a battery 300 fire protection system, comprising:

[0091] Battery temperature management system 10;

[0092] Cooling system 20 is connected to an external refrigeration mechanism. Cooling system 20 is arranged around the outer periphery of battery 300 and is communicatively connected to battery temperature management system 10.

[0093] A battery temperature detection system 30 is installed on the battery 300 and is communicatively connected to the battery temperature management system 10; and,

[0094] In the battery fire suppression device 40 exemplified in the previous embodiment, a communication module is installed on the battery 300 fire suppression device. The cooling component 100 surrounds the outer periphery of the cooling system 20. The cooling system 20 forms gaps 21 corresponding to the positions of each support component 200. The end of the support component 200 facing the battery 300 passes through the corresponding gap 21 to connect the cooling component 100 to the battery 300. The battery 300 fire suppression device communicates with the battery temperature management system 10 through the communication module.

[0095] In this embodiment, by setting up a battery temperature management system 10, a cooling system 20, a battery temperature detection system 30, and the battery fire-fighting device 40 exemplified in the previous embodiment, during use, the cooling system 20 covers the outer periphery of the battery 300, and gaps 21 are formed in the cooling system 20 at the positions corresponding to each support component 200, so that the support component 200 can pass through the gaps 21 and directly connect to the outer wall of the battery 300. This allows the cooling and extinguishing agent stored in the cooling component 100 to be depressurized and sprayed onto the battery 300 through the opening 120 and directly fire-fighting the battery 300 through the gaps 21 when the liquid-filled thermosensitive glass structure 210 in the support component 200 ruptures, thereby improving the efficiency of fire-fighting operations.

[0096] It should be specifically and clearly stated that the battery temperature management system 10, cooling system 20 and battery temperature detection system 30 in this embodiment are all existing technologies. In this embodiment, only the arrangement of the cooling system 20 on the outer wall of the battery 300 has been changed. The structure of the battery temperature management system 10, cooling system 20 and battery temperature detection system 30 itself has not been improved or designed. Therefore, they will not be described in detail here.

[0097] Of course, since the end of the support component 200 facing the battery 300 passes through the cooling system 20, the cooling system 20 can also cool the thermal expansion agent inside the liquid-filled thermistor glass structure 210 during the cooling process of the battery 300, thus enabling the cooling system 20 to protect the liquid-filled thermistor glass structure 210. To ensure this function, in specific implementations, the length of the liquid-filled thermistor glass structure 210 passing through the cooling system 20 (i.e., the length by which the cooling system 20 cools the liquid-filled thermistor glass structure 210) is at least the length of one rupture tube 214.

[0098] Based on the same technical concept, in a third aspect, the present invention also proposes a battery 300 fire protection method, characterized in that it is applied to the battery 300 fire protection system described in the first aspect;

[0099] The fire-fighting method for battery 300 includes the following steps:

[0100] S100, the battery temperature detection system 30 detects the current temperature of the battery 300 in real time and transmits the temperature information to the battery temperature management system 10.

[0101] In this embodiment, specifically, a temperature sensing device (i.e., battery temperature detection system 30) installed in the battery cell 300 is first used to detect the temperature of the battery cell 300 in real time, and the detection result is transmitted to the battery temperature management system 10. At the same time, the battery temperature management system 10 manages the received temperature in a timely manner.

[0102] S200, the battery temperature management system 10 determines whether the current temperature has reached the preset temperature based on the temperature information.

[0103] In this embodiment, when using the battery temperature management system 10 to determine whether the real-time temperature has reached the preset temperature, the battery temperature management system 10 can be used to directly compare the received real-time temperature with the preset temperature, and determine whether the temperature has reached the preset temperature based on the comparison result.

[0104] It should be specifically and clearly stated that, in this embodiment, for the purpose of timely feedback, when the real-time temperature reaches the preset temperature, the battery temperature management system 10 can directly generate a judgment instruction to determine whether the cooling system 20 is cooling the battery 300 according to the target instruction and directly execute step S300. Alternatively, an alarm or warning method can be used to remind technicians to perform manual operation. In this embodiment, it is preferred to execute the process by generating a judgment instruction to determine whether the cooling system 20 is cooling the battery 300 according to the target instruction.

[0105] S300. When the preset temperature is reached, it is determined whether the cooling system 20 cools the battery 300 according to the target instruction.

[0106] The target commands include valve opening commands in the cooling system 20, commands for the compressor in the cooling system 20 to operate at maximum power, and commands for the refrigeration mechanism to provide single-supply cooling to the battery 300.

[0107] S400. If the cooling system 20 cools the battery 300 according to the target command, the thermal expansion agent of the battery 300 fire-fighting device can expand and burst the corresponding liquid-filled thermosensitive glass structure 210 so that the battery 300 fire-fighting device can perform fire-fighting operation on the battery 300.

[0108] In this embodiment, the battery temperature management system 10 first judges the real-time temperature transmitted by the battery temperature detection system 30. When the real-time temperature reaches the preset temperature, the battery temperature management system 10 then judges whether the cooling system 20 cools the battery 300 according to the target instruction. After the cooling system 20 cools the battery 300 according to the target instruction, the liquid-filled thermosensitive glass structure 210 in the battery fire-fighting device 40 is shattered to activate the cooling component 100 to perform fire-fighting operations on the battery 300. This allows the present invention to perform fire-fighting operations on the battery 300 while providing sufficient protection for the battery 300, thus ensuring the service life of the battery 300 and its safety.

[0109] In some preferred embodiments, after step S300, the method further includes:

[0110] S500: If the cooling system 20 fails to cool the battery 300 according to the target command, the battery temperature management system 10 is used to control the cooling system 20 to cool the battery 300 according to the target command.

[0111] S600, return to the step of controlling the battery temperature detection system 30 to detect the current temperature of the battery 300 in real time and transmit the temperature information to the battery temperature management system 10.

[0112] The present invention, by adopting the method exemplified in the above embodiments, achieves the purpose of controlling the thermal fire of battery 300 in the nascent stage, effectively preventing the further expansion and occurrence of fire accidents involving battery 300.

[0113] Finally, it should be noted that the sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above embodiments are only optional embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made under the inventive concept of the present invention using the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are all included within the patent protection scope of the present invention.

Claims

1. A battery-powered fire suppression device, characterized in that, include: A cooling component (100) is provided, which covers the outer periphery of the battery (300). A storage chamber (110) is formed within the cooling component (100), and the storage chamber (110) stores a fire extinguishing agent under pressure. The fire extinguishing agent is either a liquid-based fire extinguishing agent or a gas-based fire extinguishing agent. A support assembly (200) is distributed around the outer periphery of the battery (300) and is connected between the cooling assembly (100) and the battery (300). A liquid-filled thermistor glass structure (210) is provided on the support assembly (200). The liquid-filled thermistor glass structure (210) includes a liquid-filled thermistor glass tube (212). A channel (211) is formed inside the liquid-filled thermistor glass tube (212). A thermally expanding solvent that is immiscible with the fire extinguishing agent is stored in the channel (211). The cooling assembly (100) has an opening (120) that connects the storage chamber (110) and the channel (211). The heat-expanding solvent is used to expand when the battery (300) reaches a preset temperature, so as to shatter the liquid-filled thermosensitive glass structure (210) and cause the fire extinguishing agent in the storage chamber (110) to be depressurized and sprayed onto the battery (300) through the opening (120) to carry out fire-fighting operations on the battery (300); The liquid-filled thermistor glass tube (212) forms multiple burst tubes (214) arranged sequentially along the direction from the battery (300) to the cooling component (100). A crack-preventing wall (215) is provided between any two adjacent burst tubes (214) to separate the corresponding two burst tubes (214). The cavity of each burst tube (214) forms the channel (211). The size of the channel communicating with the storage chamber (110) in each section of the burst tube (214) is different. The cavity of each burst tube (214) is filled with the heat-expanding solvent. Along the direction from the battery (300) to the cooling assembly (100), the heat-expanding solvent filling the cavity of the plurality of burst tubes (214) is used to sequentially expand when the battery (300) reaches a preset temperature, so that the bursting temperature of the liquid-filled thermistor glass tube (212) is set to increase from the battery (300) toward the cooling assembly (100), so as to sequentially burst the burst tubes (214) along the direction from the battery (300) to the cooling assembly (100).

2. The battery fire suppression device as described in claim 1, characterized in that, The support assembly (200) further includes a first connecting support (220), which is detachably mounted on the outer wall of the battery (300) and is sealed to one end of the liquid-filled thermosensitive glass structure (210) facing the battery (300).

3. The battery fire suppression device as described in claim 2, characterized in that, The number of support components (200) is multiple, and each support component (200) further includes a second connecting support (230). The second connecting support (230) is detachably installed on the cooling component (100). The second connecting support (230) is provided with a hole (231) communicating with the corresponding opening (120). The end of the liquid-filled thermosensitive glass structure (210) facing the cooling component (100) extends into the hole (231) and is sealed to the inner wall of the hole (231). The hole (231) communicates the channel (211) with the corresponding opening (120).

4. The battery fire suppression device as described in claim 3, characterized in that, The hole (231) includes a first hole segment (232) and a second hole segment (233) that are interconnected. The first hole segment (232) is connected to the corresponding opening (120), and the second hole segment (233) is connected to the channel (211). The diameter of the second hole segment (233) is larger than that of the first hole segment (232) to form an installation step between the first hole segment (232) and the second hole segment (233). The liquid-filled thermosensitive glass structure (210) extends into the second hole segment (233) at one end facing the cooling component (100) and is sealed to the inner wall of the second hole segment (233). The end of the liquid-filled thermosensitive glass structure (210) facing the cooling component (100) abuts against the step.

5. The battery fire suppression device as described in claim 3, characterized in that, One end of the liquid-filled thermistor glass tube (212) facing the battery (300) is sealed to the first connecting support (220), and the other end of the liquid-filled thermistor glass tube (212) facing the cooling component (100) extends into the corresponding hole (231) and is sealed to the inner wall of the hole (231). The liquid-filled thermosensitive glass structure (210) further includes: An elastic element (213) is sleeved on the outer periphery of the liquid-filled thermosensitive glass tube (212), and the two ends of the elastic element (213) are respectively connected to the first connecting support (220) and the second connecting support (230). The heat-expanding solvent is used to expand when the battery (300) reaches a preset temperature, so as to rupture the corresponding liquid-filled thermosensitive glass tube (212), so that the fire extinguishing agent in the storage chamber (110) is depressurized and sprayed onto the battery (300) to carry out fire-fighting operations on the battery (300) through the corresponding opening (120).

6. The battery-powered fire suppression device as described in any one of claims 1 to 5, characterized in that, The cooling component (100) includes: Multiple cooling chambers (130) are circumferentially spaced around the outer periphery of the battery (300), and each cooling chamber (130) contains a storage chamber (110). At least one support assembly (200) connects each chamber to the battery (300), and each chamber has an opening (120) corresponding to the position of each support assembly (200) that connects the storage chamber (110) to the channel (211). A flexible connector (140) is provided between any two adjacent cooling boxes (130).

7. A battery-powered fire suppression system, characterized in that, include: Battery temperature management system (10); Cooling system (20), the cooling system (20) is connected to an external refrigeration mechanism, the cooling system (20) is arranged around the outer periphery of the battery (300), and the cooling system (20) is communicatively connected to the battery temperature management system (10); A battery temperature detection system (30) is installed on the battery (300) and is communicatively connected to the battery temperature management system (10). as well as, The battery fire suppression device (40) as described in any one of claims 1 to 6 is equipped with a communication module, the cooling component (100) is arranged around the outer periphery of the cooling system (20), the cooling system (20) has a gap (21) corresponding to the position of the support component (200), one end of the support component (200) facing the battery (300) passes through the corresponding gap (21) to connect the cooling component (100) to the battery (300), and the battery fire suppression device (40) is communicatively connected to the battery temperature management system (10) through the communication module.

8. A battery fire-fighting method, characterized in that, Applied to the battery fire suppression system as described in claim 7; The battery fire suppression method includes the following steps: The battery temperature detection system (30) detects the current temperature of the battery (300) in real time and transmits the temperature information to the battery temperature management system (10). The battery temperature management system (10) determines whether the current temperature has reached the preset temperature based on the temperature information; When the preset temperature is reached, it is determined whether the cooling system (20) cools the battery (300) according to the target instruction; wherein, the target instruction includes the valve opening instruction in the cooling system (20), the instruction for the compressor in the cooling system (20) to operate at maximum power, and the instruction for the refrigeration mechanism to provide single-supply refrigeration to the battery (300); If the cooling system (20) cools the battery (300) according to the target command, the thermal expansion solvent of the battery fire-fighting device (40) can expand and crack the corresponding liquid-filled thermosensitive glass structure (210) so that the battery fire-fighting device (40) can perform fire-fighting operation on the battery (300).

9. The battery fire-fighting method as described in claim 8, characterized in that, After the step of determining whether the cooling system (20) cools the battery (300) according to the target instruction when the preset temperature is reached, the method further includes: If the cooling system (20) does not cool the battery (300) according to the target command, the battery temperature management system (10) controls the cooling system (20) to cool the battery (300) according to the target command; Return to the step of controlling the battery temperature detection system (30) to detect the current temperature of the battery (300) in real time and transmit the temperature information to the battery temperature management system (10).

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