Battery library

Abstract

This utility model discloses a battery storage enclosure. Belonging to the field of battery safety technology, the battery storage enclosure includes: a enclosure body, a door, a support tray, and a gas storage tank. The enclosure body has storage space, and the door is installed in the enclosure body for selectively opening and closing the storage space. The support tray is located within the storage space and is used to hold batteries. The gas storage tank is located within the storage space and stores a gaseous fire extinguishing agent. The gas storage tank is used to selectively release the gaseous fire extinguishing agent to the outside. According to this utility model embodiment, the support tray within the storage space can hold batteries. In the event of a battery fire, the storage space can be closed through the door, and the gaseous fire extinguishing agent within can be released through the gas storage tank to quickly increase the concentration of the gaseous fire extinguishing agent around the batteries, thereby extinguishing the fire, preventing the fire from spreading, and reducing fire losses.

Description

Technical Field

[0001] This utility model relates to the field of battery safety, and more specifically, to a battery storage device. Background Technology

[0002] In the lithium battery new energy industry, the fire protection of battery storage areas generally adopts a combined water and air fire protection method, with air spray and water spray being carried out in the form of pipelines.

[0003] This method of fire extinguishing is ineffective, especially when using water-air fire suppression. The water spraying process can cause additional damage to the battery, leading to greater fire losses. Utility Model Content

[0004] This invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, this invention proposes a battery storage unit that can reduce fire damage.

[0005] A battery storage unit according to an embodiment of the present invention includes: a storage body having a storage space; a storage door installed on the storage body for selectively opening and closing the storage space; a support tray disposed within the storage space for supporting batteries; and a gas storage tank disposed within the storage space, containing a gaseous fire extinguishing agent, for selectively releasing the gaseous fire extinguishing agent to the outside.

[0006] According to the battery storage according to this utility model embodiment, the support tray in the storage space can support the batteries. In the event of a battery fire, the storage space can be closed through the storage door, and the gaseous fire extinguishing agent inside can be released through the gas storage tank to quickly increase the concentration of the gaseous fire extinguishing agent around the batteries, thereby extinguishing the fire, preventing the fire from spreading, and reducing fire losses.

[0007] According to some embodiments of the present invention, the gas storage tank includes: a housing having a gas storage cavity and an exhaust port communicating with the gas storage cavity, wherein the gaseous fire extinguishing agent is stored in the gas storage cavity; an actuator and a gas-blocking plug, wherein the actuator is used to drive the gas-blocking plug to selectively block the exhaust port.

[0008] According to some embodiments of this utility model, there are multiple exhaust holes and one-to-one correspondences between them; the gas storage tank also includes a connector, and each of the air plugs is connected to the driver through the connector.

[0009] According to some embodiments of the present invention, the box body is located above the support tray, and the vent is directly opposite the support tray.

[0010] According to some embodiments of the present invention, the box body and the storage body are movably connected.

[0011] According to some embodiments of the present invention, the housing also has an inflation port communicating with the gas storage chamber; the gas storage chamber further includes a detector, which is communicating with the gas storage chamber and used to detect the volume and concentration of the gaseous fire extinguishing agent in the gas storage chamber.

[0012] According to some embodiments of this utility model, the gaseous fire extinguishing agent is perfluorohexanone fire extinguishing agent.

[0013] According to some embodiments of the present invention, the battery storage tank further includes: a fire sensor located in the storage space outside the gas storage tank; and a controller that is communicatively connected to the fire sensor, the storage tank door, and the gas storage tank, wherein the controller is used to control the storage tank door to close and the gas storage tank to release the gas extinguishing agent to the outside when the fire sensor is triggered.

[0014] According to some embodiments of the present invention, the fire sensor includes: a plurality of smoke sensors, and at least two of the smoke sensors have different heights.

[0015] According to some embodiments of the present invention, the fire sensor further includes at least one temperature sensor, which is installed on the side of the gas storage tank facing the support tray.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 This is a perspective view of the battery bank according to an embodiment of the present utility model;

[0018] Figure 2 This is a top view of the battery storage according to an embodiment of the present utility model;

[0019] Figure 3 This is a side view of the battery bank according to an embodiment of the present utility model;

[0020] Figure 4 This is a partial structural schematic diagram of the battery storage according to an embodiment of the present utility model;

[0021] Figure 5 This is a partial structural schematic diagram of the gas storage tank according to an embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of the connector and multiple air plugs according to an embodiment of the present utility model.

[0023] Figure label:

[0024] Storage unit 1; Storage space 11; Guide rail 12;

[0025] Warehouse door 2; cylinder 21; lifting door panel 22;

[0026] Gas storage tank 3; housing 31; gas storage cavity 311; vent 312; inflation port 313; sliding claw 314; actuator 32; air plug 33; connector 34; detector 35;

[0027] Smoke sensor 41; Temperature sensor 42;

[0028] Battery storage 10. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] The battery storage 10 according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] Reference Figures 1-4 As shown, the battery storage 10 includes: a storage body 1, a storage door 2, a support tray, and a gas storage tank 3. The storage body 1 has a storage space 11. The storage door 2 is installed in the storage body 1 and is used to selectively open and close the storage space 11. The support tray is located in the storage space 11 and is used to support batteries. The gas storage tank 3 is located in the storage space 11 and stores gaseous fire extinguishing agent. The gas storage tank 3 is used to selectively release gaseous fire extinguishing agent to the outside.

[0035] Specifically, the battery storage 10 can be used to store batteries. The battery storage 10 has a fire extinguishing function. When a fire is caused by thermal runaway of the battery in the battery storage 10, the battery storage 10 can isolate the battery from the external environment and cool down the battery to extinguish the fire, thereby reducing fire losses and preventing the fire from spreading.

[0036] The storage unit 1 can be a hollow cuboid structure with an open front end, containing a storage space 11. A storage door 2 can be installed at the opening of the storage unit 1. The storage door 2 is used to selectively open and close the storage space 11. That is, when the storage door 2 is open, the storage space 11 is open to the outside environment for easy access to batteries. When the storage door 2 is closed, the storage space 11 is closed to the outside environment. Therefore, in the event of a fire involving the batteries in the storage space 11, closing the storage door 2 can isolate the storage space 11 from the outside environment, preventing the fire from spreading and also preventing flammable or combustible materials from the outside environment from entering the storage space 11. The storage door 2 can be a lifting door panel 22 driven by a cylinder 21, or it can be a roller shutter door driven by a roller shutter mechanism.

[0037] The support tray is located in the storage space 11 and is used to support the battery. The battery can be a lithium battery. The battery is fixed on the support tray and can be moved into and out of the storage space 11 through the support tray. In addition, the support tray may also be provided with a charging and discharging interface that is electrically connected to the battery to facilitate charging and discharging of the battery.

[0038] Gas storage tank 3 is located within storage space 11. Gas storage tank 3 stores gaseous fire extinguishing agent. Gas storage tank 3 is used to selectively release gaseous fire extinguishing agent to the outside. It is understood that when the battery in the carrying tray is not on fire, gas storage tank 3 may not release gaseous fire extinguishing agent to the outside. When the battery in the carrying tray is on fire, gas storage tank 3 releases gaseous fire extinguishing agent to the outside to extinguish the fire on the battery.

[0039] Gas extinguishing agents are non-conductive, avoiding the risk of electric shock that may occur when using water-based extinguishing agents. Gas extinguishing agents will automatically evaporate after extinguishing the fire, leaving no residue such as powder, foam or water stains, thus avoiding damage to the unburned parts of the battery and reducing fire losses.

[0040] It should be noted that the opening and closing of the storage door 2 and whether the gas storage tank 3 releases gas extinguishing agent can be manually controlled by the corresponding control switch, or automatically controlled by the controller according to whether a fire occurs.

[0041] It is understood that, in this embodiment of the utility model, a battery fire or fire does not only refer to an open flame produced by the battery, but also to smoke, abnormal high temperature, etc. caused by thermal runaway of the battery.

[0042] According to the battery storage 10 of this utility model embodiment, the support tray in the storage space 11 can support the battery. In the event of a battery fire, the storage space 11 can be closed through the storage door 2, and the gaseous fire extinguishing agent inside can be released through the gas storage box 3 to quickly increase the concentration of the gaseous fire extinguishing agent around the battery, thereby extinguishing the fire, preventing the fire from spreading and reducing fire losses.

[0043] In some embodiments of this utility model, reference is made to Figure 4 and Figure 5 As shown, the gas storage tank 3 includes: a tank body 31, an actuator 32, and a gas plug 33. The tank body 31 has a gas storage cavity 311 and an exhaust port 312 communicating with the gas storage cavity 311. The gas extinguishing agent is stored in the gas storage cavity 311. The actuator 32 is used to drive the gas plug 33 to selectively block the exhaust port 312.

[0044] Specifically, the housing 31 can be a hollow cuboid structure with a gas storage chamber 311 inside, where the gaseous fire extinguishing agent is stored. The housing 31 has an exhaust port 312 that communicates with the gas storage chamber 311, and the gaseous fire extinguishing agent can be discharged outside the housing 31 through the exhaust port 312 to achieve fire extinguishing and cooling of the battery.

[0045] The actuator 32 is used to drive the gas plug 33 to selectively block the exhaust port 312. That is, when the actuator 32 drives the gas plug 33 to block the exhaust port 312, the gas extinguishing agent stored in the gas storage chamber 311 can be prevented from leaking. When the actuator 32 drives the gas plug 33 without blocking the exhaust port 312, the gas extinguishing agent in the gas storage chamber 311 can be discharged through the exhaust port 312 to extinguish the fire in the battery.

[0046] Reference Figure 4As shown, the actuator 32 and the air plug 33 are both located in the air storage cavity 311 to avoid interference between the actuator 32 and the air plug 33 and the external support tray or battery. The actuator 32 can be a telescopic pneumatic cylinder or a hydraulic cylinder, or it can be an electric lifter. The actuator 32 can drive the air plug 33 to move closer to or away from the exhaust port 312.

[0047] In some other embodiments of this utility model (not shown in the figure), the bottom plate of the gas storage tank 3 is a flip-up flap structure. The gas storage tank 3 can be driven by the drive motor inside to flip the bottom plate open and close, so as to selectively release the gas extinguishing agent to the outside.

[0048] In some embodiments of this utility model, reference is made to Figures 4-6 As shown, there are multiple exhaust ports 312 and air plugs 33, and they correspond one-to-one. The air storage tank 3 also includes a connector 34, and each air plug 33 is connected to the driver 32 through the connector 34.

[0049] Specifically, there are multiple gas-blocking plugs 33. One actuator 32 can drive multiple gas-blocking plugs 33 to move synchronously via a connector 34, thereby reducing the number of actuators 32. There are multiple vent holes 312. When it is necessary to extinguish the fire in the battery, the actuator 32 can drive each gas-blocking plug 33 to move away from the vent hole 312 via the connector 34, so that each vent hole 312 is opened. The gaseous extinguishing agent in the gas storage chamber 311 can be quickly released through multiple vent holes 312 to improve the extinguishing efficiency.

[0050] In some embodiments of this utility model, reference is made to Figure 4 and Figure 5 As shown, the housing 31 is located above the support tray, and the vent 312 is directly opposite the support tray.

[0051] Specifically, in the direction of gravity, the housing 31 is positioned above the support tray, facilitating the movement of the support tray and the batteries within it into and out of the storage space 11, and preventing interference between the housing 31 and the support tray. The vent 312 is directly opposite the support tray. In the event of a battery fire, the gaseous extinguishing agent discharged from the vent 312 can quickly act on the batteries on the support tray, thereby improving extinguishing efficiency and reducing fire losses.

[0052] It should be noted that the density of the gaseous extinguishing agent can be greater than that of air. The vent 312 can release the gaseous extinguishing agent to the battery from the top of the support tray. The gaseous extinguishing agent can quickly sink to the burning battery under the action of gravity to improve the extinguishing efficiency.

[0053] In some embodiments of this utility model, the box 31 and the storage body 1 are movably connected.

[0054] Reference Figure 4As shown, the storage tank 1 may be equipped with a guide rail 12 at the top of the storage space 11, and the housing 31 may be equipped with a sliding claw 314 that cooperates with the guide rail 12. The sliding claw 314 can be hung on the guide rail 12 and move along the guide rail 12 to adjust the position of the housing 31 within the storage space 11 of the storage tank 1. When the carrying tray carries batteries of different sizes, the housing 31 can be moved so that the exhaust port 312 is aligned with the batteries carried on the carrying tray, thereby reducing the time it takes for the gas fire extinguisher to reach the batteries and improving the fire extinguishing efficiency. In addition, the housing 31 can be moved to the corresponding upper and lower positions according to the size of the batteries, which can also improve the versatility of the gas storage tank 3.

[0055] Optionally, there are multiple guide rails 12 and sliding claws 314, each corresponding to the other, and each guide rail 12 is arranged in parallel to improve the stability of the movement of the housing 31.

[0056] In other embodiments, the storage unit 1 can be connected to the box 31 by a robotic arm or ball screw structure to enable the box 31 to move within the storage space 11 of the storage unit 1.

[0057] In some embodiments of this utility model, reference is made to Figure 4 As shown, the housing 31 also has an inflation port 313 that communicates with the gas storage chamber 311. The gas storage chamber 3 also includes a detector 35, which communicates with the gas storage chamber 311 and is used to detect the volume and concentration of the gaseous fire extinguishing agent in the gas storage chamber 311.

[0058] Specifically, the inflation port 313 can be connected to the gas cylinder of the gaseous fire extinguishing agent via a pipe, and the gaseous fire extinguishing agent can be replenished into the gas storage chamber 311 through the inflation port 313 to achieve repeated use of the gas storage tank 3. The detector 35 can detect the volume and concentration of the gaseous fire extinguishing agent in the gas storage chamber 311 to ensure that the amount of gaseous fire extinguishing agent filled into the gas storage chamber 311 is sufficient and meets the standards, thus ensuring its fire extinguishing effect.

[0059] Optionally, the detector 35 may employ sensors such as ECD (electrochemical), NDIR (non-dispersive infrared), and PID (photoionization). The detector 35 can directly measure the concentration of the gaseous fire extinguishing agent in the gas storage chamber 311, and obtain the volume of the gaseous fire extinguishing agent based on the volume of the gas storage chamber 311 and the measured concentration.

[0060] In some embodiments of this invention, the gaseous fire extinguishing agent is perfluorohexanone.

[0061] Specifically, perfluorohexanone (1230 gas) fire extinguishing agent has a dual effect of highly efficient cooling and chemical inhibition when extinguishing battery fires. Upon contact with flames, perfluorohexanone rapidly vaporizes, absorbing a large amount of heat and effectively inhibiting the thermal runaway chain reaction of the battery. Simultaneously, perfluorohexanone has excellent cooling and penetration properties, allowing it to penetrate deeper into the battery, absorb heat, and inhibit internal chemical reactions. The active free radicals released from the high-temperature decomposition of perfluorohexanone can interrupt the combustion chain reaction, achieving rapid fire extinguishing and preventing reignition. Furthermore, it has excellent electrical insulation properties and leaves no residue after evaporation, preventing short circuits or secondary damage to the battery. In addition, its gaseous density is greater than air, allowing it to remain in the battery area for a long time, maintaining the extinguishing concentration.

[0062] In some embodiments of this utility model, the battery storage 10 further includes a fire sensor and a controller. The fire sensor is located in the storage space 11 outside the gas storage tank 3. The controller is communicatively connected to the fire sensor, the storage door 2, and the gas storage tank 3. The controller is used to control the storage door 2 to close and the gas storage tank 3 to release gaseous fire extinguishing agent to the outside when the fire sensor is triggered.

[0063] Specifically, a fire sensor is installed in the storage space 11 outside the gas storage tank 3. The fire sensor can detect whether the batteries on the support tray have experienced thermal runaway and is triggered when the batteries heat up and run away. The controller is communicatively connected to the fire sensor, the storage door 2, and the gas storage tank 3. When the fire sensor is triggered, the controller can receive the electrical signal indicating that the fire sensor has been triggered and output a closing signal to the storage door 2 and a release signal to the gas storage tank 3 through a logic circuit. This causes the storage door 2 to close and the gas storage tank 3 to release the gas extinguishing agent, thereby realizing the automatic fire extinguishing function of the battery storage 10, improving the fire extinguishing efficiency of the battery storage 10, and reducing fire losses.

[0064] In some embodiments of this utility model, reference is made to Figure 4 As shown, the fire sensor includes a plurality of smoke sensors 41, and at least two smoke sensors 41 are at different heights.

[0065] Specifically, when a battery experiences thermal runaway and causes a fire, it will produce smoke. When any smoke sensor 41 detects smoke, the fire sensor is triggered, thus confirming a battery fire. Multiple smoke sensors 41 can be distributed at different heights in the vertical direction. When any smoke sensor 41 detects smoke, it indicates that the battery has experienced thermal runaway. Therefore, a fire can be detected by the smoke sensor 41 at the corresponding height before the smoke spreads, thereby improving the detection sensitivity of the fire sensor, reducing fire losses, and improving fire extinguishing efficiency.

[0066] Reference Figure 4As shown, the smoke sensor 41 can be installed on two opposite vertical side walls of the storage space 11 of the warehouse body 1 to further improve the response speed of the fire sensor.

[0067] In some embodiments of this utility model, reference is made to Figure 4 and Figure 5 As shown, the fire sensor also includes at least one temperature sensor 42, which is installed on the side of the gas storage tank 3 facing the carrying tray.

[0068] Specifically, when a battery experiences thermal runaway and causes a fire, the battery will generate heat. When the temperature sensor 42 on the gas storage tank 3 detects that the temperature is greater than a preset temperature value (e.g., 120°C), the fire sensor is triggered, thus confirming that a battery fire has occurred.

[0069] Temperature sensor 42 is installed on the side of gas storage tank 3 facing the support tray, so that temperature sensor 42 is closer to the battery, thereby reducing the time for heat to be transferred to temperature sensor 42 when the battery catches fire, thus improving the detection sensitivity of the fire sensor, reducing fire losses, and improving fire extinguishing efficiency.

[0070] According to the battery storage 10 of this utility model embodiment, when a battery fire occurs, the battery can be isolated from the external environment, and the fire can be extinguished by a gaseous fire extinguishing agent, thus achieving a low-cost, fast-handling, and zero-damage storage fire protection function.

[0071] When a fire occurs, the temperature sensor 42 and / or the smoke sensor 41 alarm, the storage door 2 descends, and the storage door 2 fits tightly against the storage body 1, forming a sealed environment in the storage space 11, isolating external flammable and combustible materials. The actuator 32 in the gas storage tank 3 drives the gas plug 33 to retract, and the 1230 gas rapidly descends to extinguish the fire. After the fire is extinguished, the storage door 2 rises, and the post-disaster site is manually handled. At the same time, the actuator 32 can drive the gas plug 33 to block the exhaust port 312, and the 1230 gas continues to enter the gas storage tank 3 through the gas filling port 313. When the gas volume and concentration reach the set value, the valve of the gas filling port 313 closes, stopping the gas intake.

[0072] The battery storage 10 according to the embodiment of the present invention has at least the following advantages:

[0073] 1. Design a gas storage tank 3 above the storage location to store 1230 gas, accurately locate the disaster storage location, quickly release the fire extinguishing gas, avoid waste, save equipment development costs, and avoid water spray damage to the equipment.

[0074] 2. By using a stable actuator 32 and a gas plug 33 in conjunction with the design of the door 2, a sealed environment is formed to isolate flammable and combustible materials from the outside, and to quickly release 1230 gas to respond to the disaster and prevent the disaster from escalating.

[0075] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0076] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0077] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0078] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A battery storage device, characterized in that, include: The storage body (1) has a storage space (11) inside; Storage door (2), the storage door (2) is installed on the storage body (1), the storage door (2) is used to selectively open and close the storage space (11); A carrying tray, which is disposed within the storage space (11) and is used to carry the battery; A gas storage tank (3) is located in the storage space (11). The gas storage tank (3) stores a gaseous fire extinguishing agent and is used to selectively release the gaseous fire extinguishing agent to the outside.

2. The battery bank according to claim 1, characterized in that, The gas storage tank (3) includes: The housing (31) has a gas storage chamber (311) and an exhaust port (312) communicating with the gas storage chamber (311), and the gas extinguishing agent is stored in the gas storage chamber (311); A driver (32) and a plug (33), the driver (32) being used to drive the plug (33) to selectively block the exhaust port (312).

3. The battery bank according to claim 2, characterized in that, The number of exhaust holes (312) and air plugs (33) are multiple and correspond one-to-one; The gas storage tank (3) also includes a connector (34), and each of the gas plugs (33) is connected to the driver (32) through the connector (34).

4. The battery bank according to claim 2, characterized in that, The housing (31) is located above the support tray, and the vent (312) is directly opposite the support tray.

5. The battery bank according to claim 4, characterized in that, The box (31) is movably connected to the storage body (1).

6. The battery bank according to claim 2, characterized in that, The housing (31) also has an inflation port (313) that communicates with the gas storage chamber (311); The gas storage tank (3) further includes a detector (35), which is connected to the gas storage cavity (311) and is used to detect the volume and concentration of the gas extinguishing agent in the gas storage cavity (311).

7. The battery bank according to claim 1, characterized in that, The gaseous extinguishing agent is perfluorohexanone.

8. The battery bank according to any one of claims 1-7, characterized in that, The battery storage also includes: Fire sensor, the fire sensor is located in the storage space (11) outside the gas storage tank (3); The controller is communicatively connected to the fire sensor, the storage door (2) and the gas storage tank (3) respectively. The controller is used to control the storage door (2) to close and the gas storage tank (3) to release the gas extinguishing agent to the outside when the fire sensor is triggered.

9. The battery bank according to claim 8, characterized in that, The fire sensor includes a plurality of smoke sensors (41), and at least two of the smoke sensors (41) are at different heights.

10. The battery bank according to claim 9, characterized in that, The fire sensor further includes at least one temperature sensor (42), which is mounted on the side of the gas storage tank (3) facing the support tray.

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