Energy storage battery cabin fire extinguishing system and energy storage container

Abstract

The embodiment of the invention provides an energy storage battery cabin fire extinguishing system and an energy storage container, the system comprises a gas conveying device, a water conveying device and at least one main pipeline, two ends of the main pipeline are respectively connected with the gas conveying device and the water conveying device, and the main pipeline is provided with at least one cabin-level nozzle; the gas conveying device is used for conveying fire-fighting gas to the cabin-level spray head through the main pipeline, so that the cabin-level spray head sprays the fire-fighting gas into the energy storage battery cabin; and the water conveying device is used for conveying water to the cabin-level spray head through the main pipeline, so that the cabin-level spray head sprays water into the energy storage battery cabin. According to the system, the water fire extinguishing system and the gas fire extinguishing system share the pipeline, so that the pipeline layout of the energy storage battery cabin fire extinguishing system is simplified, the number of the pipelines of the fire extinguishing system is reduced, occupation of the internal space of the energy storage container is reduced, the overall weight of the energy storage container is reduced, and later modification of the pipelines of the fire extinguishing system is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage battery cabins, and in particular to an energy storage battery cabin fire protection system and an energy storage container. Background Art

[0002] Modern energy storage batteries are developing towards high energy density and high power density. Lithium-ion battery technology is constantly evolving. The increase in energy density is often accompanied by a higher heat generation rate. Once thermal runaway occurs, the battery temperature will rise sharply, which may cause serious consequences such as battery bulging, combustion, or even explosion.

[0003] Currently, firefighting systems for energy storage battery compartments primarily include gas fire extinguishing systems, water fire extinguishing systems, ventilation systems, and fire warning and alarm systems. Water and gas fire extinguishing systems are critical components for ensuring the safety of energy storage battery compartments. The design and implementation of these systems require comprehensive consideration of battery type, fire characteristics, environmental factors, and other factors to ensure rapid and effective fire extinguishing and cooling in the event of a fire.

[0004] However, existing energy storage battery compartments are equipped with independent water and gas fire extinguishing systems. The water fire extinguishing system uses water pipes to spray water from sprinklers to achieve full immersion of the battery compartment, while the gas fire extinguishing system's fire extinguishing pipe terminals are connected to the battery pack to achieve battery module-level suppression. This solution has a complex and relatively dense pipe network layout, which is relatively troublesome to modify later, affecting the effectiveness of suppressing battery thermal runaway. At the same time, the independent water fire extinguishing system and gas fire extinguishing system occupy a large amount of internal space in the container. The gas storage capacity of the gas fire extinguishing system is limited by the container space, which reduces the gas fire extinguishing system's suppression ability and increases the risk of battery thermal runaway. Summary of the Invention

[0005] The embodiments of the present application provide an energy storage battery compartment fire protection system and an energy storage container, which are used to solve the problems that the existing energy storage battery compartment fire protection system has a complex and relatively dense pipeline network layout, and the subsequent modification is also relatively troublesome, which affects the suppression effect of battery thermal runaway. At the same time, the independent water fire protection system and gas fire extinguishing system occupy a large amount of internal space of the container. The gas storage capacity of the gas fire extinguishing system is limited by the container space, which reduces the suppression ability of the gas fire extinguishing system and easily increases the risk of battery thermal runaway again.

[0006] In a first aspect, the present application provides an energy storage battery compartment fire protection system, the system comprising:

[0007] A gas delivery device, a water delivery device, and at least one main pipe, the two ends of which are respectively connected to the gas delivery device and the water delivery device, and the main pipe is provided with at least one cabin-level sprinkler;

[0008] The gas delivery device is used to deliver firefighting gas to the cabin-level sprinkler through the main pipeline, so that the cabin-level sprinkler sprays firefighting gas into the energy storage battery compartment;

[0009] The water delivery device is used to deliver water to the cabin-level sprinklers through the main pipe, so that the cabin-level sprinklers spray water into the energy storage battery cabin.

[0010] In one possible design, the main pipeline is connected to a plurality of secondary pipelines, each of the secondary pipelines is connected to a plurality of branch pipelines, and each of the branch pipelines is provided with a cell-level nozzle;

[0011] The gas delivery device is further used to deliver firefighting gas to the battery-level nozzle through the main pipeline, the secondary pipeline, and the branch pipeline, so that the battery-level nozzle sprays firefighting gas;

[0012] The water delivery device is further used to deliver water to the battery-level nozzle through the main pipeline, the secondary pipeline, and the branch pipeline, so that the battery-level nozzle sprays water.

[0013] In one possible design, the system further includes a control unit, wherein the main pipeline is provided with a cabin-level control valve, the secondary pipeline is provided with a cluster-level control valve, and the branch pipeline is provided with a battery-level control valve, and the control unit is communicatively connected with the cabin-level control valve, the cluster-level control valve, and the battery-level control valve;

[0014] The control unit is used for:

[0015] Controlling the cabin-level control valve to open so that fire-fighting gas or water can be sprayed out from the cabin-level sprinkler;

[0016] The cluster-level control valve on the target secondary pipeline and the cell-level control valve of the target branch pipeline on the target secondary pipeline are controlled to open, so that firefighting gas or water is sprayed from the cell-level nozzle on the target branch pipeline.

[0017] In one possible design, the system further includes a plurality of detection devices, which are installed at different positions of the energy storage battery compartment, and the detection devices are communicatively connected to the control unit;

[0018] The detection device is used to send an alarm message to the control unit when a fire is detected;

[0019] The control unit is also used to determine the target secondary pipeline among the multiple secondary pipelines and the target branch pipeline among the multiple branch pipelines of the target secondary pipeline based on the alarm information, and control the cabin-level control valve to open, as well as control the cluster-level control valve on the target secondary pipeline and the battery-level control valve on the target branch pipeline to open.

[0020] In one possible design, the detection device includes a temperature detector, a smoke detector, and a combustible gas detector.

[0021] In one possible design, the control unit is respectively communicated with the gas delivery device and the water delivery device. The control unit is also used to control the gas delivery device to deliver fire-fighting gas to the main line, or to control the water delivery device to deliver water to the main line after receiving the alarm information.

[0022] In a possible design, the water delivery device includes a water pump and a water delivery connector, wherein the water outlet of the water pump is connected to one end of the water delivery connector, and the other end of the water delivery connector is connected to the main pipeline;

[0023] The control unit is in communication with the water pump, and is specifically configured to control the water pump to deliver water to the main pipeline.

[0024] In one possible design, the gas delivery device includes a storage container, in which the fire extinguishing agent is stored, and the storage container is connected to the main pipeline through a main control valve;

[0025] The main control valve is in communication with the control unit, and the control unit is specifically configured to control the main control valve to open so that the gas delivery device delivers the fire-fighting gas generated by the fire-extinguishing agent to the main pipeline.

[0026] In one possible design, a quick exhaust and drain valve and a pressure detection device are provided on the main pipe. The quick exhaust and drain valve is communicatively connected to the pressure detection device and the control unit respectively. The pressure detection device is used to detect the water pressure in the main pipe.

[0027] The quick exhaust and drain valve is configured such that: when the water delivery device delivers water to the main pipeline, the quick exhaust and drain valve exhausts air out of the main pipeline; when the pressure detection device detects that the water pressure in the main pipeline is greater than or equal to a preset water pressure threshold, the quick exhaust and drain valve closes to exhaust air;

[0028] The control unit is further configured to control the quick exhaust valve to open for draining and venting when the detection device stops sending the alarm information to the control unit.

[0029] In a second aspect, the present application provides an energy storage container, which includes a box body, an energy storage battery compartment provided in the box body, and the energy storage battery compartment fire protection system as described in the first aspect.

[0030] The energy storage battery compartment fire protection system and energy storage container provided in the embodiments of the present application have the following technical effects:

[0031] This system integrates the previously independent water and gas fire extinguishing systems of the energy storage battery compartment by connecting the gas and water delivery devices at both ends of the main pipeline. This simplifies the piping layout of the energy storage battery compartment fire extinguishing system, reduces the number of pipes in the fire protection system, and facilitates future modifications to the fire protection system piping. The reduced number of pipes reduces the weight of the fire protection system, thereby reducing the overall weight of the energy storage battery compartment and facilitating its transportation. This reduction in the number of pipes also reduces the space occupied by the fire protection system within the compartment, allowing the gas delivery device to store more firefighting gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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.

[0033] Figure 1 A schematic diagram of the structure of the energy storage battery compartment fire protection system provided in an embodiment of the present application;

[0034] Figure 2 Schematic diagram of the energy storage battery compartment fire protection system structure provided in the embodiment of this application Figure 2 ;

[0035] Figure 3 Schematic diagram of the energy storage battery compartment fire protection system structure provided in the embodiment of this application Figure 3 .

[0036] Reference numerals:

[0037] 100-Gas delivery device;

[0038] 200-water delivery device;

[0039] 300-Main Road;

[0040] 400-cabin-level sprinkler;

[0041] 500-secondary pipeline;

[0042] 600-Branch Pipeline

[0043] 700-battery-grade printhead;

[0044] 800-class control valve;

[0045] 900-cluster control valve;

[0046] 1000-cell grade control valve.

[0047] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0048] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0049] Currently, the fire protection system of energy storage battery compartments mainly includes gas fire extinguishing system, water fire extinguishing system, ventilation system and fire warning alarm system. Among them, the water fire extinguishing system and gas fire extinguishing system are key components to ensure the safety of energy storage battery compartments.

[0050] Gas fire extinguishing systems typically use inert or chemical gases to extinguish flames. Common extinguishing gases include carbon dioxide, heptafluoropropane (HFC-227ea), and IG-541. These gases extinguish fires by reducing oxygen concentration or chemically inhibiting reactions. The advantage of gas fire extinguishing systems is that they are non-conductive and will not cause secondary damage to electronic equipment within the battery compartment. Furthermore, gas fire extinguishing systems can quickly cover the entire battery compartment, making them suitable for extinguishing fires in enclosed spaces.

[0051] The water firefighting system primarily consists of a sprinkler system and a water mist system. The sprinkler system sprays large amounts of water to cool the battery compartment and prevent the spread of fire. The water mist system uses high pressure to atomize water into fine droplets, which absorb heat and isolate oxygen to extinguish fires.

[0052] In actual use, the fire protection system of the energy storage battery compartment may need to be modified due to technological upgrades, changes in safety standards, etc. The existing energy storage battery compartment fire protection system pipeline layout is complex and relatively dense, and the subsequent modification is relatively troublesome, which may affect the suppression effect of battery thermal runaway. At the same time, the independent water fire protection system and gas fire extinguishing system occupy more internal space of the container. The gas storage capacity of the gas fire extinguishing system is limited by the container space, which reduces the suppression ability of the gas fire extinguishing system and easily leads to the risk of battery thermal runaway again.

[0053] To address the above technical issues, the technical concept of this application is as follows: a gas delivery device and a water delivery device are connected to each end of the main line, and a cabin-level sprinkler is provided on the main line. The gas delivery device transports firefighting gas through the main line to the cabin-level sprinkler, which then sprays firefighting gas into the energy storage battery compartment; the water delivery device is used to transport water through the main line to the cabin-level sprinkler, which then sprays water into the energy storage battery compartment.

[0054] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0055] Example 1

[0056] This embodiment provides an energy storage battery compartment fire protection system. Figure 1 A schematic diagram of the structure of the energy storage battery compartment fire protection system provided in the embodiment of the present application is shown in FIG. Figure 1 As shown, the system includes:

[0057] A gas delivery device 100, a water delivery device 200, and at least one main pipeline 300, the two ends of the main pipeline 300 are respectively connected to the gas delivery device 100 and the water delivery device 200, and the main pipeline 300 is provided with at least one cabin-level nozzle 400;

[0058] The gas delivery device 100 is used to deliver firefighting gas to the cabin-level sprinkler 400 through the main pipe 300, so that the cabin-level sprinkler 400 sprays the firefighting gas into the energy storage battery compartment;

[0059] The water delivery device 200 is used to deliver water to the cabin-level sprinkler 400 through the main pipeline 300, so that the cabin-level sprinkler 400 sprays water into the energy storage battery cabin.

[0060] Specifically, the gas delivery device 100 may include a set of high-pressure gas cylinders storing firefighting gases, such as carbon dioxide, heptafluoropropane (HFC-227ea), or a mixture of IG-541 nitrogen, argon, and carbon dioxide. The cylinders are connected to the main pipeline 300 via pressure reducing valves and control valves. In the event of thermal runaway in the energy storage battery compartment, the control valves can be opened automatically by the system or manually by staff, allowing the firefighting gas to be delivered to the cabin-level sprinklers 400 via the main pipeline 300. The gas delivery device 100 may also include a gas generator, such as a nitrogen generator or a carbon dioxide generator, to rapidly generate firefighting gas through a chemical reaction.

[0061] The water delivery device 200 can include a quick-connect connection to a fire hydrant, thereby connecting to the external firefighting network. In the event of thermal runaway in the energy storage battery compartment, the water delivery device 200 can be activated, either automatically by the system or manually by staff, to deliver water to the main pipeline 300, thereby spraying water into the battery compartment. It should be noted that in actual use, the gas delivery device 100 can be activated first to cause the compartment-level sprinklers 400 to spray firefighting gas. After the firefighting gas spraying is completed, the water delivery device 200 can be activated to cause the compartment-level sprinklers 400 to spray water for water fire suppression.

[0062] When thermal runaway occurs in the energy storage battery compartment, the gas delivery device 100 and the water delivery device 200 can be started in sequence, so that the gas delivery device 100 and the water delivery device 200 can share a set of pipelines.

[0063] Specifically, the cabin-level nozzle 400 can be an atomizing nozzle, capable of atomizing perfluorohexanone, a fire extinguishing agent that is liquid at room temperature. It should be noted that perfluorohexanone is a gaseous fire extinguishing agent widely used in fire protection systems. It has excellent fire-extinguishing properties and low toxicity. As a non-conductive fire extinguishing agent, perfluorohexanone is well-suited for extinguishing fires involving electronic equipment and electrical appliances. After being ejected from the cabin-level nozzle 400 via a pressurized jet, perfluorohexanone quickly vaporizes and covers the fire source.

[0064] The cabin-level sprinkler 400 may be a closed sprinkler, comprising a temperature sensing element and a locking device. The locking device will be unlocked only when the temperature sensing element senses that the temperature change exceeds a threshold value, allowing the fire-fighting gas or water to be sprayed out.

[0065] The energy storage battery compartment fire protection system provided in this embodiment has the following technical effects:

[0066] This system connects the gas delivery device 100 and the water delivery device 200 via a main pipeline 300, integrating the previously independent water and gas fire extinguishing systems of the energy storage battery compartment. This simplifies the piping layout of the energy storage battery compartment fire extinguishing system, reduces the number of pipes in the fire extinguishing system, and facilitates future modifications to the fire extinguishing system piping. The reduced number of pipes reduces the weight of the fire extinguishing system, thereby reducing the overall weight of the energy storage battery compartment and facilitating its transportation. This reduction in the number of pipes also reduces the space occupied by the fire extinguishing system within the compartment, allowing the gas delivery device 100 to store more firefighting gas.

[0067] Example 2

[0068] Figure 2 Schematic diagram of the energy storage battery compartment fire protection system structure provided in the embodiment of this application Figure 2 ,like Figure 2As shown, the main pipeline 300 is connected to multiple secondary pipelines 500, each secondary pipeline 500 is connected to multiple branch pipelines 600, and each branch pipeline 600 is provided with a battery-level nozzle 700;

[0069] Specifically, the gas delivery device 100 is also used to deliver fire-fighting gas to the battery-level nozzle 700 through the main line 300, the secondary line 500, and the branch line 600, so that the battery-level nozzle 700 sprays fire-fighting gas; the water delivery device 200 is also used to deliver water to the battery-level nozzle 700 through the main line 300, the secondary line 500, and the branch line 600, so that the battery-level nozzle 700 sprays water.

[0070] like Figure 2 As shown, a cabin-level sprinkler 400 can be set on the main pipeline 300, and the main pipeline 300 is connected to multiple secondary pipelines 500. Each secondary pipeline 500 is responsible for extinguishing the fire of a battery cluster. Since a battery cluster is composed of multiple batteries, multiple branch pipelines 600 are set on each secondary pipeline 500, and at least one battery-level sprinkler 700 is set on each branch pipeline 600 for extinguishing the battery fire.

[0071] Since the energy storage battery compartment usually includes multiple battery clusters, a secondary pipeline 500 can be set in the area of ​​each battery cluster, so that the battery cluster with thermal runaway can be accurately extinguished. For example, when a battery cluster catches fire, the nozzles on the secondary pipeline 500 in the area can jointly spray fire-fighting gas or water to extinguish the fire. When a battery in the battery cluster catches fire, the battery-level nozzle 700 on the branch pipeline 600 in the area where the battery is located can spray fire-fighting gas or water to extinguish the fire. Since the main pipeline 300 is also provided with a compartment-level nozzle 400, the compartment-level nozzle 400 can also spray fire-fighting gas or water to extinguish the fire. The battery-level nozzle 700 can be a closed nozzle, including a temperature sensing element and a locking device. Only when the temperature sensing element senses that the temperature change exceeds the threshold will the locking device be unlocked to allow the fire-fighting gas or water to be sprayed out. In actual applications, the specific number and connection method of the main pipeline 300 and the secondary pipeline 500 can be determined according to needs. For example, there can be multiple main pipelines 300, or horizontal pipelines can be connected at different positions of the main pipeline 300, and the horizontal pipelines are connected to the secondary pipeline 500.

[0072] Example 3

[0073] Figure 3 Schematic diagram of the energy storage battery compartment fire protection system structure provided in the embodiment of this application Figure 3 ,like Figure 3 As shown, a cabin-level control valve 800 is provided on the main pipeline 300 , a cluster-level control valve 900 is provided on the secondary pipeline 500 , and a cell-level control valve 1000 is provided on the branch pipeline 600 .

[0074] Specifically, the cabin-level sprinklers 400 and the battery-level sprinklers 700 can be open sprinklers, that is, they can be sprayed out as long as water or fire-fighting gas is introduced into the pipeline. Therefore, a cabin-level control valve 800 is set on the main pipeline 300 to control the cabin-level sprinklers 400, and a cluster-level control valve 900 is set on the secondary pipeline 500 to control the multiple battery-level sprinklers 700 on the secondary pipeline 500. A battery-level control valve 1000 is set on each branch pipeline 600 to control the battery-level sprinkler 700 of the branch pipeline 600.

[0075] It should be noted that, since the fire protection system provided by this application can have various pipeline arrangements, the positions of the cabin-level control valve 800, cluster-level control valve 900, and battery-level control valve 1000 can be determined according to the actual pipelines. Figure 3 In the illustrated pipeline, a cabin-level control valve 800 can be installed at each end of the cabin-level sprinkler 400 to control the flow of water or firefighting gas into the cabin-level sprinkler 400. If the cabin-level sprinkler 400 is connected to the main pipeline 300 through a pipeline, the cabin-level control valve 800 can be installed on the pipeline connecting the cabin-level sprinkler 400 and the main pipeline 300. In this embodiment, each valve can be a solenoid valve.

[0076] In this embodiment, the fire protection system may further include a control unit, which is in communication with the cabin-level control valve 800, the cluster-level control valve 900, and the cell-level control valve 1000;

[0077] The control unit is used to:

[0078] Control the cabin-level control valve 800 to open so that firefighting gas or water can be sprayed out from the cabin-level sprinkler 400;

[0079] The cluster-level control valve 900 on the target secondary pipeline 500 and the cell-level control valve 1000 of the target branch pipeline 600 on the target secondary pipeline 500 are controlled to open, so that firefighting gas or water is sprayed out from the cell-level nozzle 700 on the target branch pipeline 600 .

[0080] Specifically, the control unit may include a processor or controller for executing control logic. The control unit may communicate with each valve via a CAN bus, RS-485, Ethernet, or a wireless communication module such as Zigbee or LoRa. The control unit can control the cabin-level control valve 800 to open and close the cluster-level solenoid valve, so that only the cabin-level sprinkler 400 sprays water or fire-fighting gas to extinguish the fire in the entire energy storage battery compartment. It can also control only the cabin-level control valve 800 to close, and control the cluster-level control valve 900 on the target secondary pipeline 500 and the battery-level control valve 1000 of the target branch pipeline 600 on the target secondary pipeline 500 to open, so that fire-fighting gas or water is sprayed from the battery-level sprinkler 700 on the target branch pipeline 600 to achieve precise fire extinguishing at the fire point. It can also control the cabin-level control valve 800, the cluster-level control valve 900 on the target secondary pipeline 500, and the battery-level control valve 1000 of the target branch pipeline 600 on the target secondary pipeline 500 to open, so that the cabin-level sprinkler 400 and the battery-level sprinkler 700 jointly spray water or fire-fighting gas to achieve composite fire extinguishing suppression.

[0081] A one-way valve can be set on the pipeline connecting the water delivery device 200 and the main pipeline 300 to prevent firefighting gas from entering the water delivery device 200. Similarly, a one-way valve can be set on the pipeline connecting the gas delivery device 100 and the main pipeline 300 to prevent water from entering the gas delivery device 100.

[0082] Optionally, the system may further include multiple detection devices, which may be communicatively connected to the control unit in the manner described above and configured to send an alarm message to the control unit upon detecting a fire. The detection devices may include temperature detectors, smoke detectors, and combustible gas detectors, which may send an alarm message to the control unit upon reaching an alarm state.

[0083] The detection devices can be installed in different locations in the energy storage battery compartment. For example, they can be divided into compartment-level detection devices, cluster-level detection devices, and battery-level detection devices. The compartment-level detection devices can be installed in the top space of the energy storage battery compartment, the cluster-level detection devices can be installed in the battery cluster area, and the battery-level detection devices can be installed in the battery area. When the detection devices at different locations send alarm information to the control unit, the control unit can determine the specific location of the thermal runaway based on the alarm information. The specific implementation method can be, for example, that the alarm information sent by each detection device may include the unique identifier of the detection device, the type of abnormality detected such as temperature, smoke, abnormal value, and timestamp; the control unit can maintain a location mapping table to associate the identifier of each detection device with its physical installation location. The control unit receives alarm information from each detection device and determines the source location of the alarm signal at the compartment level, cluster level, or battery level by parsing the identifier in the information.

[0084] After determining the specific location of the thermal runaway, the control unit can determine a target secondary pipeline 500 near the thermal runaway region from among the multiple secondary pipelines 500, and determine a target branch pipeline 600 near the thermal runaway region from among the multiple branch pipelines 600 of the target secondary pipeline 500, and control the cabin-level control valve 800 to open, as well as the cluster-level control valve 900 on the target secondary pipeline 500 and the cell-level control valve 1000 on the target branch pipeline 600 to open. A specific implementation method, for example, can be that the control unit maintains a pipeline topology diagram that describes the connection relationship between the cabin, secondary, and branch pipelines 600. The diagram includes the physical location of each pipeline and the connected valve information. Based on the thermal runaway location, the control unit searches the topology diagram for the secondary pipeline 500 and branch pipeline 600 closest to the location, and uses a proximity algorithm, such as a shortest path algorithm, to determine the target secondary pipeline 500 and target branch pipeline 600 closest to the thermal runaway region. The control unit sends instructions through the communication interface to open the valves on the corresponding cabin, secondary and branch pipelines 600, and can use the feedback mechanism to confirm the status of the valves, such as open or closed status, to ensure successful execution of the instructions.

[0085] Example 4

[0086] Based on the aforementioned embodiment, the control unit can further be communicatively connected to the gas delivery device 100 and the water delivery device 200, respectively. Specifically, the control unit can be communicatively connected to the gas delivery device 100 and the water delivery device 200 via a CAN bus, RS-485, Ethernet, or a wireless communication module such as Zigbee or LoRa. Upon receiving the alarm information sent by the detection device, the control unit controls the gas delivery device 100 to deliver firefighting gas to the main line 300, or controls the water delivery device 200 to deliver water to the main line 300. Upon receiving the alarm information, the control unit can first control the gas delivery device 100 to deliver firefighting gas to the main line 300, and then control the water delivery device 200 to deliver water to the main line 300 after the firefighting gas is discharged.

[0087] Optionally, the water delivery device 200 may include a water pump, which is connected to the main pipeline 300 via a water delivery connector. The control unit may control whether the water pump delivers water to the main pipeline 300 .

[0088] Optionally, the gas delivery device 100 includes a storage container, in which the fire extinguishing agent is stored, and the storage container is connected to the main line 300 through a main control valve;

[0089] The main control valve is in communication with the control unit, which is specifically configured to control the main control valve to open so that the gas delivery device 100 delivers the firefighting gas generated by the fire extinguishing agent to the main pipeline 300. The fire extinguishing agent stored in the storage container may be perfluorohexanone.

[0090] The main pipe 300 may also be provided with a quick exhaust and drain valve and a pressure detection device. The quick exhaust and drain valve is respectively connected to the pressure detection device and the control unit. The pressure detection device is used to detect the water pressure in the main pipe 300.

[0091] The quick exhaust and drain valve is configured such that: when the water supply device 200 supplies water to the main pipe 300, the quick exhaust and drain valve exhausts air out of the main pipe 300; when the pressure detection device detects that the water pressure in the main pipe 300 is greater than or equal to a preset water pressure threshold, the quick exhaust and drain valve closes to exhaust air;

[0092] The control unit is also used to control the quick exhaust valve to open and drain air when the detection device stops sending alarm information to the control unit.

[0093] In this embodiment, the pressure detection device may include a hydraulic alarm and a pressure feedback switch. Specifically, when the system begins to fill with water, the quick exhaust drain valve exhausts the air in the pipe so that water can quickly fill the entire pipe. Once the hydraulic alarm and pressure feedback switch confirm that the system has reached the required water pressure, turning off the exhaust function can help maintain the water pressure in the system stable and ensure the continuous and effective flow of fire-fighting water. After quickly exhausting the air in the pipe, turning off the exhaust can prevent the occurrence of the water hammer effect. The water hammer effect is a pressure fluctuation caused by the sudden cessation or change of direction of the water flow, which may cause damage to the piping system. By turning off the exhaust, the system can operate more smoothly.

[0094] When the detection device stops sending alarm information to the control unit, it means that the thermal runaway is completely suppressed at this time, so the quick exhaust drain valve is controlled to open to drain the air, discharge the remaining water and gas in the pipeline, and restore the system to normal working state.

[0095] On the basis of the aforementioned embodiment, an embodiment of the present application further provides an energy storage container, which includes a box body, an energy storage battery compartment provided in the box body, and the aforementioned energy storage battery compartment fire protection system.

[0096] Finally, it should be noted that those skilled in the art will readily identify other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The present invention is not limited to the precise structure described above and illustrated in the accompanying drawings, and various modifications and variations may be made without departing from the scope thereof. The scope of the present invention is limited solely by the appended claims.

Claims

1. A fire protection system for an energy storage battery compartment, characterized in that: The system comprises: A gas delivery device (100), a water delivery device (200), and at least one main pipe (300), wherein two ends of the main pipe (300) are respectively connected to the gas delivery device (100) and the water delivery device (200), and at least one cabin-level nozzle (400) is provided on the main pipe (300); The gas delivery device (100) is used to deliver firefighting gas to the cabin-level nozzle (400) through the main pipeline (300), so that the cabin-level nozzle (400) sprays the firefighting gas into the energy storage battery cabin; The water delivery device (200) is used to deliver water to the cabin-level sprinkler (400) through the main pipe (300), so that the cabin-level sprinkler (400) sprays water into the energy storage battery cabin.

2. The system according to claim 1, wherein: The main pipeline (300) is in communication with a plurality of secondary pipelines (500), each of the secondary pipelines (500) is in communication with a plurality of branch pipelines (600), and each of the branch pipelines (600) is provided with a battery-level nozzle (700); The gas delivery device (100) is further used to deliver firefighting gas to the battery-level nozzle (700) through the main pipeline (300), the secondary pipeline (500), and the branch pipeline (600), so that the battery-level nozzle (700) sprays the firefighting gas; The water delivery device (200) is further used to deliver water to the battery-level nozzle (700) through the main pipeline (300), the secondary pipeline (500), and the branch pipeline (600), so that the battery-level nozzle (700) sprays water.

3. The system according to claim 1, wherein: The system further comprises a control unit, wherein the main pipeline (300) is provided with a cabin-level control valve (800), the secondary pipeline (500) is provided with a cluster-level control valve (900), and the branch pipeline (600) is provided with a battery-level control valve (1000), and the control unit is communicatively connected with the cabin-level control valve (800), the cluster-level control valve (900), and the battery-level control valve (1000); The control unit is used for: Controlling the cabin-level control valve (800) to open so that firefighting gas or water is ejected from the cabin-level sprinkler (400); The cluster-level control valve (900) on the target secondary pipeline (500) and the cell-level control valve (1000) of the target branch pipeline (600) on the target secondary pipeline (500) are controlled to open, so that firefighting gas or water is sprayed from the cell-level nozzle (700) on the target branch pipeline (600).

4. The system according to claim 3, characterized in that The system further includes a plurality of detection devices, the plurality of detection devices being installed at different positions of the energy storage battery compartment, the detection devices being communicatively connected to the control unit; The detection device is used to send an alarm message to the control unit when a fire is detected; The control unit is further configured to, based on the alarm information, determine the target secondary pipeline (500) among the plurality of secondary pipelines (500), and determine a target branch pipeline (600) among the plurality of branch pipelines (600) of the target secondary pipeline (500), and control the cabin-level control valve (800) to open, as well as control the cluster-level control valve (900) on the target secondary pipeline (500) and the cell-level control valve (1000) on the target branch pipeline (600) to open.

5. The system according to claim 4, characterized in that The detection device includes a temperature detector, a smoke detector, and a combustible gas detector.

6. The system according to claim 4, characterized in that The control unit is respectively connected to the gas delivery device (100) and the water delivery device (200), and is further configured to, upon receiving the alarm information, control the gas delivery device (100) to deliver firefighting gas to the main pipeline (300), or control the water delivery device (200) to deliver water to the main pipeline (300).

7. The system according to claim 6, characterized in that The water delivery device (200) comprises a water pump and a water delivery connector, wherein the water outlet of the water pump is connected to one end of the water delivery connector, and the other end of the water delivery connector is connected to the main pipeline (300); The control unit is in communication connection with the water pump, and the control unit is specifically used to control the water pump to deliver water to the main pipeline (300).

8. The system according to claim 6, wherein: The gas delivery device (100) comprises a storage container, wherein the fire extinguishing agent is stored in the storage container, and the storage container is connected to the main pipeline (300) via a main control valve; The main control valve is in communication with the control unit, and the control unit is specifically configured to control the main control valve to open, so that the gas delivery device (100) delivers the fire-fighting gas generated by the fire-extinguishing agent to the main pipeline (300).

9. The system according to any one of claims 4 to 8, characterized in that: The main pipe (300) is provided with a quick exhaust and drain valve and a pressure detection device, the quick exhaust and drain valve being communicatively connected to the pressure detection device and the control unit respectively, and the pressure detection device being used to detect the water pressure in the main pipe (300); The quick exhaust and drain valve is configured such that: when the water delivery device (200) delivers water to the main pipeline (300), the quick exhaust and drain valve exhausts air out of the main pipeline (300); and when the pressure detection device detects that the water pressure in the main pipeline (300) is greater than or equal to a preset water pressure threshold, the quick exhaust and drain valve closes to exhaust air; The control unit is further configured to control the quick exhaust valve to open for draining and venting when the detection device stops sending the alarm information to the control unit.

10. An energy storage container, comprising a box body, an energy storage battery compartment provided in the box body, and the energy storage battery compartment fire protection system according to any one of claims 1 to 9.

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