Fire-fighting device for energy storage cabinet

Abstract

The utility model discloses a fire-fighting device for an energy storage cabinet, which relates to the technical field of energy storage cabinets, and comprises a fire-fighting medium inlet pipeline, an inlet end of which is respectively communicated with a gaseous fire-fighting medium storage tank and a liquid fire-fighting medium storage tank, and an outlet end of which is communicated with a battery pack; the fire-fighting spray head is arranged at the outlet end of the fire-fighting medium introduction pipeline and comprises a spray head valve body, a first flow channel, a second flow channel and a third flow channel are formed in the spray head valve body, the second flow channel and the third flow channel are both communicated with a battery pack, the outlet end of the fire-fighting medium introduction pipeline is communicated with the first flow channel, and the outlet end of the fire-fighting medium introduction pipeline is communicated with the third flow channel. The first flow channel communicates with the second flow channel and the third flow channel, an atomization assembly is arranged in the second flow channel, and a first electromagnetic valve is arranged in the third flow channel. According to the utility model, the gaseous fire-fighting medium can be effectively atomized, and meanwhile, the liquid fire-fighting medium can be quickly and massively introduced, so that the specific requirements of the two fire-fighting mediums are met, and the effects of extinguishing fire and preventing after-combustion are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage cabinets, in particular to a fire-fighting device for an energy storage cabinet. Background Art

[0002] There are two main solutions for fire sprinklers using gas-liquid fire fighting media for energy storage cabinet battery packs: Solution 1 Figure 1 As shown, in this design, when the battery pack experiences thermal runaway or fire, the fire extinguisher will be activated immediately. At this time, the gaseous fire-fighting medium (such as perfluorohexanone) enters the battery pack through the fire-fighting pipeline and the fire-fighting nozzle. The fire-fighting nozzle has a built-in atomizing component. After the fire-fighting medium passes through the atomizing component from the high-pressure state, it will be atomized and quickly fill the internal space of the battery pack, effectively extinguishing and cooling the battery cells that are in thermal runaway or on fire. Subsequently, a liquid fire-fighting medium (such as a water-based fire extinguishing agent or deionized water) is introduced as a second-stage fire-fighting measure to prevent the battery cells from reigniting. Scheme 2 is as shown Figure 2 As shown, the left side of the scheme is equipped with a gaseous fire-fighting medium access interface, including a fire-fighting pipeline and a fire-fighting nozzle equipped with an atomizing component; the right side is an access interface for liquid fire-fighting medium, equipped with a solenoid valve, pipeline and mounting connector. When the battery pack experiences thermal runaway or fire, the fire extinguisher is immediately activated. At this time, the gaseous fire-fighting medium (such as perfluorohexanone) enters the battery pack through the fire-fighting nozzle through the left interface. After the fire-fighting medium passes through the atomizing component from the high-pressure state, it will quickly fill the internal space of the battery pack to extinguish and cool the battery cells that are in thermal runaway or on fire. Subsequently, the solenoid valve of the liquid fire-fighting medium interface on the right is opened, and the liquid fire-fighting medium (such as a water-based fire extinguishing agent or deionized water) is introduced as a second-stage fire-fighting measure to prevent the battery cells from reigniting.

[0003] In Scheme 1, when two fire-fighting media are used to extinguish the fire and prevent the re-ignition of the battery pack through a common pipeline, the gaseous fire-fighting medium is first used for rapid fire extinguishing and cooling. However, the liquid fire-fighting medium that is subsequently introduced is an incompressible fluid. When passing through a fire sprinkler with an atomizing component, due to the large flow resistance, it takes a long time to pass through. It is impossible to reach the ideal amount of introduction in a short time, which greatly reduces the effect of extinguishing the fire and preventing the re-ignition. Although Scheme 2 has two channels on the battery pack panel, which are used to introduce gaseous and liquid fire-fighting media respectively, and an electromagnetic valve is provided to control the on and off of the liquid medium, respectively ensuring the atomization effect of the gaseous fire-fighting medium and the introduction flow requirements of the liquid fire-fighting medium; this design not only takes up too much space on the battery pack panel, but also increases the number of fire-fighting pipelines arranged in the cabinet, making the overall layout more complicated. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide an energy storage cabinet fire-fighting device.

[0005] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0006] An energy storage cabinet fire-fighting device, comprising:

[0007] The fire-fighting medium is fed into the pipeline, the inlet of which is connected to the gaseous fire-fighting medium storage tank and the liquid fire-fighting medium storage tank respectively, and the outlet of which is connected to the battery pack in the energy storage cabinet;

[0008] a fire sprinkler, disposed at the outlet end of the fire-fighting medium inlet pipeline, the fire sprinkler comprising a sprinkler valve body, the sprinkler valve body being provided with a first flow channel, a second flow channel, and a third flow channel for the flow of the fire-fighting medium, the second flow channel and the third flow channel both being in communication with the battery pack, the outlet end of the fire-fighting medium inlet pipeline being in communication with the first flow channel, and the first flow channel being in communication with the second flow channel and the third flow channel respectively, an atomizing assembly being provided in the second flow channel, and a first solenoid valve being provided in the third flow channel;

[0009] When the first solenoid valve is in a first working state, the first solenoid valve blocks the interface between the first flow channel and the third flow channel. When the first solenoid valve is in a second working state, the interface between the first flow channel and the third flow channel is connected.

[0010] As a preferred solution of the energy storage cabinet fire-fighting device of the present invention, along the flow direction of the fire-fighting medium in the first flow channel, the interface between the third flow channel and the first flow channel is located behind the interface between the second flow channel and the first flow channel.

[0011] As a preferred solution of the energy storage cabinet fire-fighting device of the present invention, the first flow channel is perpendicular to the second flow channel and the third flow channel.

[0012] As a preferred solution of the energy storage cabinet fire-fighting device of the present invention, it further comprises a fire-fighting medium discharge pipeline, the inlet end of which is connected to the battery pack.

[0013] As a preferred embodiment of the energy storage cabinet fire-fighting device of the present invention, a plurality of battery packs are arranged in the cabinet, the fire-fighting medium inlet pipeline is connected to first branch pipes having the same number as the battery packs, each first branch pipe is connected to an adjacent battery pack, and the fire-fighting nozzle is arranged at the outlet end of the first branch pipe;

[0014] The fire-fighting medium discharge pipeline is connected to second branch pipes whose number is the same as the battery packs, and each of the second branch pipes is connected to an adjacent battery pack.

[0015] As a preferred solution of the energy storage cabinet fire-fighting device of the present invention, each of the second branch pipes is provided with a one-way valve.

[0016] As a preferred solution of the energy storage cabinet fire-fighting device of the utility model, a battery pack detection module for detecting the operating status of the battery pack is provided in the battery pack, and the battery pack detection module includes a temperature sensor for detecting the battery pack temperature, a smoke sensor for detecting smoke in the battery pack, and a combustible gas sensor for detecting the concentration of combustible gas in the battery pack.

[0017] As a preferred solution of the energy storage cabinet fire-fighting device of the present invention, a second solenoid valve for controlling the on-off of the pipeline is provided between the liquid fire-fighting medium storage tank and the fire-fighting medium inlet pipeline.

[0018] As a preferred solution of the energy storage cabinet fire-fighting device of the present invention, a pressure relief valve is provided on the battery pack.

[0019] As a preferred solution of the energy storage cabinet fire-fighting device of the present invention, a sealing gasket is provided between the nozzle valve body and the battery pack.

[0020] The beneficial effects of the utility model are:

[0021] (1) The utility model provides a first flow channel, a second flow channel and a third flow channel in the nozzle valve body, wherein the second flow channel is specifically used for atomizing the gaseous fire-fighting medium, and the third flow channel serves as a direct current channel for the liquid fire-fighting medium. This design ensures that the gaseous fire-fighting medium can be effectively atomized, while the liquid fire-fighting medium can be introduced quickly and in large quantities, thereby meeting the specific requirements of the two fire-fighting media and improving the effect of extinguishing fire and preventing re-ignition.

[0022] (2) In the present invention, two fire-fighting media share the fire-fighting main line, and diversion and control are achieved at the nozzle through a specially designed valve body structure. This design reduces the installation space occupied on the battery pack panel and also reduces the number of fire-fighting pipelines arranged in the cabinet, making the overall layout more concise.

[0023] (3) The utility model controls the closing and opening of the third flow channel respectively through the two working states of the first solenoid valve, thereby achieving guidance and control of the flow of liquid fire-fighting medium. This design ensures that the two fire-fighting media can be accurately introduced into the battery pack as required at different fire-fighting stages, thereby improving the fire-fighting efficiency.

[0024] (4) The present invention adds a fire-fighting medium discharge pipeline to the battery pack. When liquid fire-fighting medium is introduced, the internal compressed air and fire-fighting medium can flow out freely from this outlet, preventing the pressure relief valve from opening due to excessive pressure when liquid fire-fighting medium is introduced, causing the risk of fire-fighting medium leakage.

[0025] (5) In the present invention, the outlet of the battery pack is located at the top of the battery pack, which can ensure that the liquid fire-fighting medium will flow out from the outlet pipe after the battery cells are immersed. At this time, the supply pressure of the external liquid fire-fighting medium does not need to be closed. The liquid fire-fighting medium continues to enter the battery pack from one point and flow out from another point. While immersing the battery cells, it also takes away a large amount of heat inside the battery pack through continuous circulation, thereby enhancing the effect of suppressing the re-ignition of the battery cells.

[0026] (6) The utility model is equipped with a one-way valve at the second branch pipe, so that the gas and fire-fighting medium can only flow out of the battery pack, preventing the fire-fighting medium from flowing out of the top battery pack and flowing back to the bottom battery pack through the pipeline, thereby ensuring the sealing effect of the battery pack that has not thermally runaway. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 This is a schematic diagram of the structure of a gas-liquid fire-fighting medium fire sprinkler used in Solution 1 of the prior art;

[0029] Figure 2 This is a schematic diagram of the structure of the gas-liquid fire-fighting medium fire sprinkler used in the second scheme of the prior art

[0030] Figure 3 This is a schematic diagram of the structure of the energy storage cabinet fire-fighting device provided by the utility model;

[0031] Figure 4 This is a schematic diagram of the installation of the fire sprinkler in the energy storage cabinet fire protection device provided by the utility model;

[0032] Figure 5 This is a cross-sectional view of a fire sprinkler in the energy storage cabinet fire-fighting device provided by the present invention;

[0033] Figure 6 This is a structural diagram of different working states of the first battery valve in the fire sprinkler;

[0034] Among them: 1. Cabinet; 2. Battery pack; 3. Battery pack detection module; 4. Pressure relief valve; 5. Fire protection medium inlet pipeline; 6. Gaseous fire protection medium storage tank; 7. Liquid fire protection medium interface; 8. Second solenoid valve; 9. First branch pipe; 10. Fire sprinkler; 11. Nozzle valve body; 12. Pipeline interface; 13. First flow channel; 14. Second flow channel; 15. Third flow channel; 16. Sealing gasket; 17. Atomization assembly; 18. First solenoid valve; 19. Fire protection medium discharge pipeline; 20. Second branch pipe; 21. One-way valve; 22. Reserved hole. DETAILED DESCRIPTION

[0035] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific implementation methods and in conjunction with the accompanying drawings.

[0036] Figure 3 This is a schematic diagram of the structure of an energy storage cabinet fire-fighting device provided in an embodiment of the present application. The device includes a fire-fighting medium inlet pipe 5, a fire-fighting nozzle 10, and a fire-fighting medium outlet pipe 19, which are installed within the energy storage cabinet. Both gaseous and liquid fire-fighting medium enter the battery pack 2 through the fire-fighting medium inlet pipe 5 and the fire-fighting nozzle 10 to extinguish the fire in the battery pack 2. Excess fire-fighting medium is discharged through the fire-fighting medium outlet pipe 19 to prevent excessive pressure in the battery pack 2 from causing an explosion.

[0037] For details, see Figure 3 The energy storage cabinet includes a cabinet body 1, within which are stacked several battery packs 2. Each battery pack 2 is equipped with a battery pack detection module 3 for detecting the operating status of the battery pack 2. This battery pack detection module 3 monitors the operating status of the battery pack 2 in real time and transmits the detected signal to the fire control unit, which determines whether fire extinguishing measures are required.

[0038] In this embodiment, the battery pack detection module 3 includes a temperature sensor for detecting the temperature of the battery pack 2 , a smoke sensor for detecting smoke in the battery pack 2 , and a combustible gas sensor for detecting the concentration of combustible gas in the battery pack 2 .

[0039] Each battery pack 2 is provided with a pressure relief valve 4. The main function of the pressure relief valve 4 is to promptly release excess pressure when the internal pressure of the battery pack 2 increases, so as to restore the pressure balance and prevent the battery pack 2 from exploding due to excessive internal pressure.

[0040] The fire-fighting medium inlet pipe 5 is arranged in the cabinet 1. The inlet end of the fire-fighting medium inlet pipe 5 is connected to the gaseous fire-fighting medium storage tank 6 and the liquid fire-fighting medium storage tank respectively. Figure 3In this embodiment, the gaseous firefighting medium storage tank 6 includes a gaseous fire extinguisher disposed within the cabinet 1. This storage tank contains a firefighting medium (e.g., perfluorohexanone) for extinguishing fires in the battery cells of the battery pack 2. This device can receive a signal from the firefighting host computer to actively trigger the pressurization of the firefighting medium, allowing the gaseous firefighting medium to enter the battery pack 2 through the firefighting medium inlet line 5. A liquid firefighting medium interface 7 is provided on the side of the cabinet 1. The other inlet end of the firefighting medium inlet line 5 is connected to an external liquid firefighting medium storage tank with a continuous pressure supply through this interface. A second solenoid valve 8 is disposed between the liquid firefighting medium storage tank and the firefighting medium inlet line 5 to control the on / off flow of the liquid firefighting medium.

[0041] Since a plurality of battery packs 2 are arranged in the cabinet 1, the fire-fighting medium inlet pipe 5 is connected with first branch pipes 9 of the same number as the battery packs 2. Each first branch pipe 9 is connected to an adjacent battery pack 2.

[0042] A fire sprinkler 10 is provided at the outlet end of each first branch pipe 9. Figure 4 The fire sprinkler 10 includes a sprinkler valve body 11, and a pipe interface 12 is provided on the sprinkler valve body 11. The outlet end of the first branch pipe 9 is connected to the pipe interface 12 to pass the fire-fighting medium into the sprinkler valve body 11. A first flow channel 13, a second flow channel 14 and a third flow channel 15 are provided in the sprinkler valve body 11 for the flow of the fire-fighting medium. Among them, the second flow channel 14 and the third flow channel 15 are both connected to the battery pack 2. The inlet end of the first flow channel 13 is connected to the pipe interface 12 provided on the sprinkler valve body 11, and the first flow channel 13 is respectively connected to the second flow channel 14 and the third flow channel 15. The fire-fighting medium enters the first flow channel 13 through the fire-fighting medium inlet pipeline 5 and the first branch pipe 9, and then enters the battery pack 2 through the second flow channel 14 and the third flow channel 15, thereby realizing the fire extinguishing treatment of the battery pack 2.

[0043] Along the flow direction of the firefighting medium in the first flow channel 13, the interface between the third flow channel 15 and the first flow channel 13 is located behind the interface between the second flow channel 14 and the first flow channel 13. Figure 3 , the pipe interface 12 of the nozzle valve body 11 is located on the left side of the nozzle valve body 11, and the distance between the second flow channel 14 and the pipe interface 12 is smaller than the distance between the third flow channel 15 and the pipe interface 12. The main function of the second flow channel 14 is to guide the gaseous fire-fighting medium to flow into the battery pack 2, and an atomization assembly 17 is installed in the second flow channel 14 to ensure that the gaseous fire-fighting medium is effectively atomized before entering the battery pack 2. The third flow channel 15 is a direct current channel, and its main function is to allow liquid fire-fighting medium to flow directly into the battery pack 2. A first solenoid valve 18 is fixedly installed at one end of the third flow channel 15 away from the battery pack 2. The first solenoid valve 18 has two working states, see Figure 6, respectively, in the valve stem extended state and the valve stem retracted state. When the first solenoid valve 18 is in the first working state, i.e., the valve stem extended state, the valve stem of the first solenoid valve 18 blocks the interface between the first flow channel 13 and the third flow channel 15. At this time, the fire-fighting medium in the first flow channel 13 cannot enter the third flow channel 15. When the first solenoid valve 18 is in the second working state, i.e., the valve stem retracted state, the interface between the first flow channel 13 and the third flow channel 15 is opened. At this time, the fire-fighting medium in the first flow channel 13 can enter the third flow channel 15.

[0044] It should be noted that when thermal runaway or a fire occurs within the battery pack 2, the gaseous fire extinguisher first activates upon receiving a control signal from the fire department, releasing the gaseous fire extinguishing medium through the fire extinguishing medium inlet line 5 and the first branch pipe 9 into the nozzle valve body 11. In this state, the first solenoid valve 18 is in the first operating state, closing the third flow channel 15. Therefore, under pressure, the gaseous fire extinguishing medium can only enter the second flow channel 14, where it is atomized by the atomizing assembly 17 and sprayed into the battery pack 2. The atomized gaseous fire extinguishing medium quickly fills the battery pack 2, achieving the first stage of fire extinguishing for the battery cells within the battery pack 2. After the gaseous fire extinguishing medium is discharged, the liquid fire extinguishing medium, driven by external pressure, enters the nozzle valve body 11 through the fire extinguishing medium inlet line 5 and the first branch pipe 9. At this point, the first battery valve 18 switches to the second operating state upon receiving a control signal from the fire department, opening the third flow channel 15. In this state, due to the low flow resistance within the third flow channel, the flow primarily flows into the battery pack 2 through this channel. The liquid fire-fighting medium completes the immersion treatment of the battery cell, thereby effectively preventing the battery cell from reigniting.

[0045] In this embodiment, the nozzle valve body 11 is threadedly mounted to the front panel of the battery pack 2. The front panel of the battery pack 2 is provided with a pre-set hole 22 for the firefighting medium and a through-hole for threaded mounting. Furthermore, a sealing gasket 16 is provided between the nozzle valve body 11 and the front panel of the battery pack 2 to ensure a sealed passage for the firefighting medium.

[0046] The fire-fighting medium discharge pipeline 19 is arranged in the cabinet 1. Figure 5 Connected to the firefighting medium discharge line 19 are second branch pipes 20, the same number as the battery packs 2. Each second branch pipe 20 communicates with an adjacent battery pack 2 and is equipped with a one-way valve 21. After the liquid firefighting medium has completely submerged the cells within the battery pack 2, excess liquid medium is discharged through the second branch pipes 20 via the one-way valves 21. This effectively prevents excessive pressure from the liquid firefighting medium on the pressure relief valves 4 of the battery packs 2, preventing leakage caused by accidental opening of the pressure relief valves 4 during the introduction of the liquid firefighting medium.

[0047] It should be noted that the second branch pipe 20 is located at the upper part of the battery pack 2, which ensures that the liquid fire-fighting medium will be discharged from the fire-fighting medium discharge pipeline 19 only after it has completed immersing the battery cell, thereby ensuring the effect of fire-fighting treatment.

[0048] During the firefighting process, the liquid firefighting medium does not leak out of the battery pack 2 or into the cabinet 1 due to the opening of pressure relief valve 4. Simultaneously, the liquid firefighting medium is continuously introduced and discharged, submerging the battery cells. This circulates and cools the battery cells throughout the battery pack 2, enhancing the effectiveness of suppressing the re-ignition of the thermal runaway cells. After a predetermined monitoring period to confirm that there is no risk of re-ignition, second solenoid valve 8 closes, stopping further injection of the liquid firefighting medium, thus completing the firefighting process.

[0049] Therefore, the technical solution of the present application provides a nozzle valve body comprising three interconnected channels, wherein the second flow channel is specifically used for the atomization of gaseous fire-fighting medium, and the third flow channel serves as a direct current channel for liquid fire-fighting medium. This design ensures that the gaseous fire-fighting medium can be effectively atomized, while the liquid fire-fighting medium can be introduced quickly and in large quantities, thereby meeting the specific requirements of the two fire-fighting media and improving the effect of extinguishing fire and preventing re-ignition.

[0050] In addition to the above embodiments, the present invention may also have other implementation methods; any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. An energy storage cabinet fire-fighting device, characterized in that: include: A fire-fighting medium inlet pipeline (5) has an inlet end connected to a gaseous fire-fighting medium storage tank (6) and a liquid fire-fighting medium storage tank, respectively, and an outlet end connected to a battery pack (2) in the energy storage cabinet; A fire sprinkler (10) is arranged at the outlet end of the fire-fighting medium inlet pipe (5), the fire sprinkler (10) includes a sprinkler valve body (11), a first flow channel (13), a second flow channel (14) and a third flow channel (15) for the flow of the fire-fighting medium are provided in the sprinkler valve body (11), the second flow channel (14) and the third flow channel (15) are both connected to the battery pack (2), the outlet end of the fire-fighting medium inlet pipe (5) is connected to the first flow channel (13), and the first flow channel (13) is respectively connected to the second flow channel (14) and the third flow channel (15), an atomizing assembly (17) is provided in the second flow channel (14), and a first solenoid valve (18) is provided in the third flow channel (15); When the first solenoid valve is in a first working state, the first solenoid valve (18) blocks the interface between the first flow channel (13) and the third flow channel (15); when the first solenoid valve (18) is in a second working state, the interface between the first flow channel (13) and the third flow channel (15) is connected.

2. The energy storage cabinet fire-fighting device according to claim 1, characterized in that: Along the flow direction of the fire-fighting medium in the first flow channel (13), the interface between the third flow channel (15) and the first flow channel (13) is located behind the interface between the second flow channel (14) and the first flow channel (13).

3. The energy storage cabinet fire-fighting device according to claim 1, characterized in that: The first flow channel (13) is perpendicular to the second flow channel (14) and the third flow channel (15).

4. The energy storage cabinet fire-fighting device according to claim 1, characterized in that: It also includes a fire-fighting medium discharge pipeline (19), the inlet end of which is in communication with the battery pack (2).

5. The energy storage cabinet fire-fighting device according to claim 4, characterized in that: A plurality of battery packs (2) are arranged in the cabinet (1); the fire-fighting medium inlet pipe (5) is connected to a number of first branch pipes (9) that is the same as the number of the battery packs (2); each of the first branch pipes (9) is in communication with an adjacent battery pack (2); and the fire-fighting nozzle (10) is arranged at the outlet end of the first branch pipe (9); The fire-fighting medium discharge pipeline (19) is connected to second branch pipes (20) whose number is the same as the number of the battery packs (2), and each of the second branch pipes (20) is in communication with an adjacent battery pack (2).

6. The energy storage cabinet fire-fighting device according to claim 5, characterized in that: Each of the second branch pipes (20) is provided with a one-way valve (21).

7. The energy storage cabinet fire-fighting device according to claim 1, characterized in that: A battery pack detection module (3) for detecting the operating state of the battery pack (2) is provided in the battery pack (2); the battery pack detection module (3) comprises a temperature sensor for detecting the temperature of the battery pack (2), a smoke sensor for detecting smoke in the battery pack (2), and a combustible gas sensor for detecting the concentration of combustible gas in the battery pack (2).

8. The energy storage cabinet fire-fighting device according to claim 1, characterized in that: A second electromagnetic valve (8) for controlling the on-off of the pipeline is provided between the liquid fire-fighting medium storage tank and the fire-fighting medium inlet pipeline (5).

9. The energy storage cabinet fire-fighting device according to claim 1, characterized in that: The battery pack (2) is provided with a pressure relief valve (4).

10. The energy storage cabinet fire-fighting device according to claim 1, characterized in that: A sealing gasket (16) is provided between the nozzle valve body (11) and the battery pack (2).

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