Fire extinguishing device and electric equipment

Abstract

The embodiment of the utility model provides a fire extinguishing device and electric equipment, and belongs to the technical field of fireproof equipment. The fire extinguishing device comprises a storage container, a trigger piece and a temperature sensing detection assembly, a fire extinguishing medium is contained in the storage container, and the storage container is provided with an ejection opening used for ejecting the fire extinguishing medium to an object to be detected; the triggering piece is arranged on the storage container and is configured to compress the storage container under external acting force, so that the fire extinguishing medium is sprayed out of the spraying opening; and the temperature sensing detection assembly comprises a temperature sensing wire and a pushing conversion piece connected with the temperature sensing wire, and the temperature sensing wire is connected with the to-be-detected object and is configured to be heated to burn, so that the pushing conversion piece applies pushing acting force to the triggering piece after receiving heat of the temperature sensing wire. According to the fire extinguishing device provided by the embodiment of the invention, the temperature of the to-be-detected object can be sensed by using the temperature sensing wire, autonomous fire extinguishing and cooling are realized, human intervention requirements are reduced, and the safety of the to-be-detected object is improved.

Description

Technical Field

[0001] This application relates to the technical field of fire prevention equipment, and particularly to a fire extinguishing device and an electrical equipment. Background Art

[0002] With the rapid development of the new energy industry, the safety issue of batteries has attracted increasing attention. During the use of a battery pack, if unexpected situations such as overcharging or over-discharging occur, it may cause a single battery to experience thermal runaway, which may further trigger a fire, posing a serious threat to people's lives and property.

[0003] In the related art, especially in remote communication base station equipment, fires are generally prevented by installing fire sprinklers indoors. However, since communication base stations are located in remote areas and unattended, once a fire breaks out in the equipment with a battery pack, it cannot be extinguished in the first time, and external fire protection measures are difficult to take effect in the early stage of the fire, which is likely to cause property losses. Utility Model Content

[0004] The embodiments of this application provide a fire extinguishing device and an electrical equipment to solve the technical problem in the related art that property losses are likely to occur because a battery pack cannot be extinguished in the first time at the initial stage of a fire.

[0005] Based on this, on the one hand, the embodiments of this application provide a fire extinguishing device, including:

[0006] A storage container, which contains a fire extinguishing medium inside, and the storage container is provided with a spray outlet for spraying the fire extinguishing medium;

[0007] A trigger member, which is arranged on the storage container and is configured to compress the storage container under an external force so that the spray outlet sprays the fire extinguishing medium;

[0008] A temperature sensing detection component, including a temperature sensing wire and a top-pushing conversion member connected to the temperature sensing wire. The temperature sensing wire is connected to an object to be detected and is configured to burn when heated, so that after the top-pushing conversion member receives the heat of the temperature sensing wire, a top-pushing force is applied to the trigger member.

[0009] In a possible implementation manner, the top-pushing conversion member is a temperature sensing elastic sheet, and the temperature sensing elastic sheet is configured to deform when receiving the heat of the temperature sensing wire to apply a top-pushing force to the trigger member.

[0010] In a possible implementation manner, the top-pushing conversion member is a combustion chamber, and the combustion chamber has an exhaust port facing the trigger member. The combustion chamber is configured to generate combustion gas when receiving the heat of the temperature sensing wire, and the combustion gas applies a top-pushing force to the trigger member through the exhaust port.

[0011] In a possible implementation manner, a combustion medium is installed in the combustion chamber.

[0012] In a possible implementation, there are at least two temperature-sensing wires, both of which are connected to the push conversion component, and the at least two temperature-sensing wires are configured to be installed at different positions of the object to be detected.

[0013] In a possible implementation, the spray outlet is connected to a flexible spray conduit, and the outlet end of the spray conduit is connected to an atomizing nozzle.

[0014] In a possible implementation, the container further includes at least two hoops, which are used to detachably connect the storage container to the object to be detected.

[0015] In a possible embodiment, the hoop includes a mounting platform and two hoop rings disposed opposite to each other on the mounting platform, the mounting platform is used to connect with the object to be detected, and the two hoop rings jointly clamp the storage container;

[0016] Wherein, at least one of the hoop rings is rotatably connected to the mounting platform, and the free ends of the two hoop rings can be butted together to form a detachable locking state.

[0017] In a possible implementation, the fire extinguishing medium is perfluorohexanone.

[0018] On the other hand, an embodiment of the present application provides an electric device, including:

[0019] Battery pack;

[0020] The fire extinguishing device as described in any of the above items is installed on the battery pack.

[0021] The fire extinguishing device provided in the embodiments of the present application utilizes a temperature-sensing wire to detect the temperature of an object to be detected, which can be a battery pack. When the temperature inside the battery pack rises due to a fire, the temperature-sensing wire burns, causing a push-converter to apply a push force to a trigger, thereby causing the storage container's discharge port to spray a fire-extinguishing medium toward the battery pack. The temperature-sensing wire can quickly sense and react to temperature changes, allowing the fire-extinguishing medium to be rapidly discharged at the initial stage of a fire, thereby suppressing the spread of the fire and reducing losses. Furthermore, the temperature-sensing detection component and the trigger can work together to reduce the need for human intervention, making it particularly suitable for unmanned or difficult-to-access equipment environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0023] Figure 1Schematic diagram of the installation of the fire extinguishing device in the battery pack in the embodiment of the present application;

[0024] Figure 2 is Figure 1 Schematic diagram of the structure of the fire extinguishing device in;

[0025] Figure 3 Schematic diagram of the structure of the temperature sensing detection component in the embodiment of the present application;

[0026] Figure 4 Schematic diagram of the structure of the storage container in the embodiment of the present application;

[0027] Figure 5 Cross-sectional view of the trigger in the storage container in the embodiment of the present application;

[0028] Figure 6 Schematic diagram of the structure of the hoop in the embodiment of the present application.

[0029] Description of reference numerals

[0030] 100 - Storage container; 101 - Spray outlet; 102 - Spray conduit; 103 - Atomizing nozzle;

[0031] 200 - Trigger; 201 - Diversion channel;

[0032] 300 - Temperature sensing detection component; 301 - Temperature sensing wire; 302 - Thrust conversion component;

[0033] 400 - Hoop; 401 - Installation platform; 402 - Hoop ring;

[0034] 500 - Temperature detection component;

[0035] 600 - Battery pack.

[0036] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed description of the specific implementation

[0037] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0038] As described in the background art, with the rapid development of applications such as electric vehicles, power tools, and energy storage systems, high-energy density batteries such as lithium-ion batteries are being used more and more widely. However, these batteries may overheat during charging and discharging, and even cause fires, posing serious safety hazards to users and equipment.

[0039] In the related art, the methods for preventing fires in battery packs generally rely on manual and visual monitoring, or use external fire extinguishing systems to extinguish fires, such as fire extinguishers, sprinkler systems, etc. However, the above methods all have problems such as long response time, untimely fire extinguishing, and limited coverage. Especially in unattended or difficult-to-access environments, the effectiveness of traditional fire extinguishing methods is greatly reduced. In addition, the manual fire extinguishing method also has the risk of human operation errors and cannot ensure rapid and effective fire extinguishing in the initial stage of the fire.

[0040] Based on the above related descriptions, in one or more embodiments of the present application, a fire extinguishing device is provided. The object to be detected can be a battery pack. A temperature-sensitive wire is used to detect the temperature of the battery pack. When the temperature inside the battery pack rises due to a fire, the temperature-sensitive wire burns due to heat, causing the push conversion member to apply a pushing force to the triggering member, so that the spray outlet of the storage container sprays a fire extinguishing medium onto the battery pack. The temperature-sensitive wire can quickly sense the temperature change and respond, so that the fire extinguishing medium is quickly sprayed in the initial stage of the fire, suppressing the spread of the fire and reducing losses. Moreover, the temperature-sensitive detection component and the triggering member cooperate, which can also reduce the need for human intervention, and is particularly suitable for unattended or difficult-to-access battery pack environments.

[0041] In addition, since the storage container can be directly connected to the battery pack, the overall compact design of the fire extinguishing device reduces the space occupied by the battery pack and is suitable for various application scenarios with limited space.

[0042] The following will explain it with reference to the accompanying drawings.

[0043] As Figure 1 and Figure 2 shown, an embodiment of the present application provides a fire extinguishing device, which includes a storage container 100, a triggering member 200, and a temperature-sensitive detection component 300. Here, the object to be detected mentioned in the embodiment of the present application can be a battery pack 600, or other electrical equipment or components that are prone to fire disasters. In the embodiment of the present application, the battery pack 600 is taken as an example for explanation.

[0044] Specifically, the storage container 100 is used to connect to the battery pack 600. The storage container 100 contains a fire extinguishing medium inside, and the storage container 100 is provided with a spray outlet 101 for spraying the fire extinguishing medium towards the battery pack 600; the trigger member 200 is provided on the storage container 100 and is configured to compress the storage container 100 under an external force, so that the spray outlet 101 sprays the fire extinguishing medium; the temperature sensing detection component 300 includes a temperature sensing wire 301 and a push conversion member 302 connected to the temperature sensing wire 301. The temperature sensing wire 301 is configured to burn when heated, so that the push conversion member 302 applies a pushing force to the trigger member 200 after receiving the heat of the temperature sensing wire 301.

[0045] As can be seen from the above description, for the fire extinguishing device provided by the embodiment of the present application, the storage container 100 is used to store the fire extinguishing medium, and the temperature sensing wire 301 is used to detect the temperature of the battery pack 600. When the battery pack 600 undergoes thermal runaway, the temperature sensing wire 301 burns when heated, causing the push conversion member 302 to apply a pushing force to the trigger member 200, so that the spray outlet 101 of the storage container 100 sprays the fire extinguishing medium towards the battery pack 600.

[0046] Thus, the entire fire extinguishing and temperature reduction process is carried out in the early stage of the fire when the battery pack 600 undergoes thermal runaway, suppressing the spread of the fire and reducing losses. Moreover, the cooperation between the temperature sensing detection component 300 and the trigger member 200 can also reduce the need for human intervention, which is particularly suitable for the environment of the battery pack 600 that is unattended or difficult to quickly approach.

[0047] As Figure 1 shown, generally, multiple battery cells are arranged in an array in the battery pack 600. The multiple battery cells are wrapped by the housing of the battery pack 600 to form a complete battery assembly. The battery pack 600 should also be provided with related components such as fireproof cotton and an electronic control management module. Only examples are given in the embodiment of the present application.

[0048] The above-mentioned temperature sensing wire 301 can adopt a thermal sensitive wire in related technologies. Exemplarily, the thermal sensitive wire can adopt a combustible metal wire, a combustible polymer, or other composite materials. The combustible metal wire can adopt a magnesium wire or an aluminum wire, and the combustible polymer can adopt a polypropylene or polyethylene material. The above materials will catch fire and burn spontaneously at a certain temperature, and are guided to the push conversion member 302 along the length direction of the temperature sensing wire 301 itself, so that the push conversion member 302 receives the heat of the temperature sensing wire 301.

[0049] In the embodiments of the present application, the self-ignition starting temperature of the temperature-sensitive wire 301 can be set above 350°C. Thus, by arranging the temperature-sensitive wire 301 to detect the temperature of the battery pack 600, since the temperature-sensitive wire 301 will only self-ignite when reaching a certain temperature threshold, it can avoid false alarms in high-temperature weather in summer or during the normal operation of the battery pack 600. At the same time, it can ensure that the temperature-sensitive wire 301 immediately and accurately receives the high temperature rapidly generated during the thermal runaway of the battery pack 600, ensuring the detection reliability of the fire extinguishing device.

[0050] In some embodiments, the pushing conversion member 302 is a temperature-sensitive elastic sheet, and the temperature-sensitive elastic sheet is configured to receive the heat of the temperature-sensitive wire 301 and deform, so as to apply a pushing force to the triggering member 200.

[0051] The above materials need to have good thermal sensitivity and deformation ability to ensure that they can rapidly deform after receiving the heat of the temperature-sensitive wire 301 and apply a pushing force. Exemplarily, the temperature-sensitive elastic sheet is made of a metal elastic sheet, a shape memory alloy or a ceramic material, as long as it can be deformed by high temperature to push the triggering member 200.

[0052] In some embodiments, the temperature-sensitive elastic sheet is made of two metal materials with different expansion coefficients. When the temperature-sensitive wire 301 burns due to thermal runaway in the battery pack 600, the temperature-sensitive elastic sheet receives the heat of the temperature-sensitive wire 301, and the different expansion rates of the two metals will cause the temperature-sensitive elastic sheet to bend, thereby applying a pushing force to the pushing conversion member 302 by using the bending deformation.

[0053] Exemplarily, the above two metal materials with different expansion coefficients can be a copper-steel alloy material or a copper-nickel alloy material.

[0054] As Figure 3 shown, in some embodiments, the pushing conversion member 302 is a combustion chamber, and the combustion chamber has an exhaust port facing the triggering member 200. The combustion chamber is configured to receive the heat of the temperature-sensitive wire 301 to generate combustion gas, and the combustion gas applies a pushing force to the triggering member 200 through the exhaust port.

[0055] Here, the combustion chamber can be made of a high-temperature resistant material, such as a stainless steel material or a ceramic material. The combustion chamber has a sealed space inside, and one end of the temperature-sensitive wire 301 extends into the combustion chamber for combustion inside the combustion chamber.

[0056] Since the internal space of the combustion chamber is sealed, the temperature-sensitive wire 301 burns inside the combustion chamber to generate a large amount of heat and combustion gas, and the combustion gas is discharged through a preset exhaust port, thereby applying a pushing force to the triggering member 200 by using the combustion gas.

[0057] Further, a combustion medium is installed in the combustion chamber. The combustion medium can adopt solid fuel, such as magnesium powder or peroxide. After receiving the heat from the temperature-sensitive wire 301 in the combustion chamber, it burns, generating a large amount of high-temperature combustion gas through combustion, and using the combustion gas to quickly impact the trigger 200.

[0058] Here, the storage container 100 can be made of pressure-resistant materials, such as stainless steel materials or high-strength plastic materials, to ensure that it can withstand the pressure of the internal fire extinguishing medium.

[0059] In some embodiments, the fire extinguishing medium inside the storage container 100 is perfluoromethyl isopropyl ketone. Perfluoromethyl isopropyl ketone is a liquid at room temperature. It has a very low heat of vaporization and a relatively high vapor pressure, enabling this fire extinguishing medium to quickly change from a liquid state to a gaseous state. When sprayed out through the spray outlet 101, the perfluoromethyl isopropyl ketone fluid will quickly evaporate and be evenly distributed throughout the protected space, rapidly cooling the battery pack 600. In addition, perfluoromethyl isopropyl ketone has a high specific gravity. During the process of suspension and fall, it can isolate oxygen in the air around the flame, enhancing the fire extinguishing effect.

[0060] Of course, other materials can also be used as the fire extinguishing medium, such as water-based fire extinguishing agents, dry powder, carbon dioxide, or halogenated hydrocarbons, etc., specifically depending on the type of battery to be protected and the environmental conditions.

[0061] It should be noted that, as Figure 4 and Figure 5 shown, in the embodiments of the present application, the trigger 200 is a piston arranged at the upper port of the storage container 100. When the trigger 200 receives a pushing force, it displaces towards the inside of the storage container 100. Since the storage container 100 itself is a sealed container, the displacement of the trigger 200 will cause the internal pressure of the storage container 100 to increase, thereby causing the fire extinguishing medium inside the storage container 100 to be sprayed out through the spray outlet 101.

[0062] Exemplarily, as Figure 5 shown, the trigger 200 causes the spray outlet 101 and the storage container 100 to be misaligned. In the initial state, the spray outlet 101 is not in communication with the inside of the storage container 100. The trigger 200 has a bent diversion channel 201 inside. When the trigger 200 receives a pushing force and displaces towards the inside of the storage container 100, the displaced trigger 200 causes the spray outlet 101 to be in communication with the inside of the storage container 100 through the diversion channel 201, thereby causing the fire extinguishing medium located inside the storage container 100 to be sprayed out.

[0063] In some embodiments, the fire extinguishing medium inside the storage container 100 is a pressurized liquid fluid. Under the pressurized state, when the trigger 200 compresses the storage container 100, it can cause the fire extinguishing medium inside the storage container 100 to be quickly and rapidly sprayed out through the spray outlet 101, thereby enhancing the immediate response effect of the fire extinguishing device.

[0064] Furthermore, a pressure detection component is provided inside the storage container 100. The pressure detection component is used to detect the pressure of the storage container 100. Exemplarily, the pressure detection component can be a pressure sensor or a pressure gauge, etc., and the embodiments of the present application do not make an absolute limitation thereto.

[0065] The above-mentioned pressure detection component can be directly connected to the cell management module of the battery pack 600 and output to an external device through the cell management module. By setting the pressure detection component, it is convenient for the operator to intuitively determine the capacity and pressure of the fire extinguishing medium inside the storage container 100, so as to facilitate the operator to replace or repair the storage container 100.

[0066] As Figure 2 shown, in the embodiments of the present application, a flexible injection conduit 102 is connected to the injection port 101, and an atomizing nozzle 103 is connected to the outlet end of the injection conduit 102.

[0067] The injection conduit 102 and the injection port 101 of the storage container 100, and the atomizing nozzle 103 and the injection conduit 102 can be connected by the pipe connection method in the related art, such as threaded mating connection. The embodiments of the present application will not elaborate thereon.

[0068] By setting the flexible injection conduit 102, the flexible injection conduit 102 can be bent and adjusted in direction, so that the fire extinguishing medium can reach the areas of the battery pack 600 that are difficult to reach or the areas of the cells that are prone to thermal runaway, improving the fire extinguishing effect, and also facilitating the operator to install the fire extinguishing device and enhancing the safety protection of the battery pack 600. In addition, setting the atomizing nozzle 103 can atomize the fire extinguishing medium into fine particles, forming a uniform spray, covering a larger area and improving the fire extinguishing efficiency.

[0069] In some embodiments, there are at least two temperature sensing wires 301. The at least two temperature sensing wires 301 are all connected to the push conversion member 302, and the at least two temperature sensing wires 301 are configured to be installed at different positions of the battery pack 600.

[0070] In the above embodiments, a plurality of temperature sensing wires 301 can be provided. The temperature sensing wires 301 can be fixed in the cell area, cell management module area or line connection area of the battery pack 600 by laying or burying, etc. By installing a plurality of temperature sensing wires 301 at different positions of the battery pack 600, comprehensive monitoring of the entire battery pack 600 can be realized, ensuring that any temperature anomaly can be detected in time. In addition, the plurality of temperature sensing wires 301 provide redundancy, and even if one wire fails, the other wires can still work normally, improving the reliability of the system.

[0071] As Figure 2 andFigure 6 As shown in the figure, the fire extinguishing device in the embodiment of the present application further includes at least two hoops 400, and the hoops 400 are used to detachably connect the storage container 100 to the battery pack 600.

[0072] Specifically, the hoop 400 includes a mounting platform 401 and two hoop rings 402 oppositely arranged on the mounting platform 401. The mounting platform 401 is used to connect with the battery pack 600, and the two hoop rings 402 jointly clamp the storage container 100; wherein, at least one of the hoop rings 402 is rotatably connected to the mounting platform 401, and the free ends of the two hoop rings 402 can be butted to form a detachable locking state.

[0073] The hoop 400 in the above embodiment can be made of a metal material or a high-strength plastic material. The mounting platform 401 and the mounting backboard of the battery pack 600 are fixedly connected by fasteners passing through both of them. The fasteners can be bolts or screws and other components, as long as the hoop 400 can be fixed on the mounting backboard of the battery pack 600.

[0074] The hoop ring 402 and the mounting platform 401 can be rotatably connected by a pivot shaft passing through both of them. Of course, it can be that one hoop ring 402 is rotatably connected to the mounting platform 401, or both of the two hoop rings 402 are rotatably connected to the mounting platform 401.

[0075] By setting the rotatable hoop ring 402, on the one hand, it is convenient for the hoop 400 to adapt to storage containers 100 of different sizes, improving the adaptability of the hoop 400. On the other hand, the detachable connection of the hoop ring 402 avoids the need to disassemble the mounting platform 401 to remove the storage container 100, facilitating the disassembly and replacement of the storage container 100, and thus facilitating operations such as overhaul and pressurization of the storage container 100.

[0076] In the above embodiment, the detachable connection between the two hoop rings 402 can be connected by a snap-fastening method. For example, a card slot is formed at the free end of one hoop ring 402, and a boss is formed at the free end of the other hoop ring 402. When the two hoop rings 402 are butted, the card slot and the boss are snap-fitted to form the locking of the two hoop rings 402. In order to facilitate adapting to storage containers 100 of different sizes, a plurality of card slots or bosses can be arranged at intervals along the length direction of the hoop ring 402, and the card slots and bosses at different positions are snap-fitted corresponding to storage containers 100 of different sizes.

[0077] In some embodiments, a temperature detection component 500 is further provided on the storage container 100. The temperature detection component 500 is disposed in the temperature sensing detection component 300 and is communicatively connected to the cell management module of the battery pack 600. Here, the temperature detection component 500 is used to receive the temperature state of the temperature sensing wire 301 in the temperature sensing detection component 300 and send the temperature state to the cell management module, so as to facilitate reminding the staff of the abnormal temperature of the battery pack 600 through the cell management module.

[0078] The above temperature detection component 500 can adopt a thermocouple temperature sensor or other components capable of detecting temperature, and there is no absolute limitation in this regard in the embodiments of the present application.

[0079] The embodiments of the present application also provide an electrical device, including a battery pack 600 and the fire extinguishing device in any of the above embodiments. The fire extinguishing device is installed on the battery pack 600.

[0080] The fire extinguishing device can be fixed on the battery pack 600 by referring to the foregoing embodiments through the hoop 400, and details are not described herein again in the embodiments of the present application.

[0081] Since the electrical device in the embodiments of the present application includes the fire extinguishing device in any of the above embodiments, it has all the advantages of the fire extinguishing device.

[0082] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include the common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0083] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A fire extinguishing device, characterized in that, Comprising: A storage container (100) which is internally filled with a fire extinguishing medium, and the storage container (100) is provided with a spray outlet (101) for spraying the fire extinguishing medium; A trigger member (200) provided on the storage container (100) and configured to compress the storage container (100) under an external force so that the spray outlet (101) sprays the fire extinguishing medium; A temperature sensing detection assembly (300) including a temperature sensing wire (301) and a push conversion member (302) connected to the temperature sensing wire (301), the temperature sensing wire (301) is connected to an object to be detected and configured to burn when heated, so that the push conversion member (302) applies a pushing force to the trigger member (200) after receiving the heat of the temperature sensing wire (301).

2. The fire extinguishing device according to claim 1, characterized in that, The push conversion member (302) is a temperature sensing elastic sheet, and the temperature sensing elastic sheet is configured to deform when receiving the heat of the temperature sensing wire (301) to apply a pushing force to the trigger member (200).

3. The fire extinguishing device according to claim 1, wherein The push conversion member (302) is a combustion chamber which has an exhaust port facing the trigger member (200), and the combustion chamber is configured to generate combustion gas when receiving the heat of the temperature sensing wire (301), and the combustion gas applies a pushing force to the trigger member (200) through the exhaust port.

4. The fire extinguishing device according to claim 3, characterized in that, The combustion chamber is internally filled with a combustion medium.

5. The fire extinguishing device according to any one of claims 1 to 4, characterized in that There are at least two temperature sensing wires (301), at least two temperature sensing wires (301) are both connected to the push conversion member (302), and at least two temperature sensing wires (301) are configured to be installed at different positions of the object to be detected.

6. The fire extinguishing device according to any one of claims 1 to 4, characterized in that A flexible spray conduit (102) is connected to the spray outlet (101), and the outlet end of the spray conduit (102) is connected to an atomizing nozzle (103).

7. The fire extinguishing device according to any one of claims 1 to 4, characterized in that, It further includes at least two hoops (400) which are used to detachably connect the storage container (100) to the object to be detected.

8. The fire extinguishing device according to claim 7, wherein The hoop (400) includes a mounting platform (401) and two hoop rings (402) oppositely arranged on the mounting platform (401), the mounting platform (401) is used to connect to the object to be detected, and the two hoop rings (402) jointly clamp the storage container (100); Wherein, at least one of the hoop rings (402) is rotatably connected to the mounting platform (401), and the free ends of the two hoop rings (402) can be butted to form a detachable locking state.

9. The fire extinguishing device according to any one of claims 1 to 4, characterized in that, The fire extinguishing medium is perfluoromethyl isopropyl ketone.

10. An electrical device, characterized in that, Comprising: A battery pack (600); The fire extinguishing device according to any one of claims 1 to 9, and the fire extinguishing device is installed on the battery pack (600).

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