Inter-cluster isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage

Abstract

The invention discloses an inter-cluster isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage, and belongs to the technical field of fire fighting of prefabricated cabins of electrochemical energy storage power stations. Wherein the cabinet container is divided into n independent cabins by the isolation baffles, a fire extinguishing device is arranged on the upper portion of the interior of the main cabinet body and comprises two sets of fire fighting pipelines, electromagnetic valves and sensor assemblies, the fire fighting pipelines comprise a main pipeline and a plurality of branch pipelines, and the branch pipelines vertically communicate with the lower portion of the pipe wall of the main pipeline; branch pipelines are arranged in the energy storage battery cabins, electromagnetic valves are installed on the branch pipelines and interact with the fire-fighting central control system, and the sensor assemblies are installed in the energy storage battery cabins and electrically connected with the fire-fighting central control system. In the operation process of the energy storage system, the device is linked with fire fighting, when the battery cluster is subjected to thermal runaway, the whole thermal runaway battery cluster is subjected to large water filling immersion through an external water source, immersion cooling is carried out in time at the initial stage of runaway, thermal runaway is effectively restrained, and the operation safety of the energy storage system is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fire protection of prefabricated cabins for electrochemical energy storage power stations, and in particular to an inter-cluster isolation type water immersion fire protection prefabricated cabin for electrochemical energy storage. Background Art

[0002] With the rapid development of the global new energy industry, energy storage technology is increasingly widely used in the new energy power generation and power grid sides. Among them, prefabricated energy storage cabins have gradually become an important part of large-capacity energy storage systems due to their integration, high efficiency and easy deployment. However, with the popularization of the application of prefabricated energy storage cabins, their potential safety hazards have become increasingly prominent, especially in large-capacity long-term energy storage power stations or large-power grid-type energy storage power stations. Due to the high density of prefabricated energy storage cabins, the consequences may lead to serious equipment damage or even a large range of safety quantity density. Once a thermal runaway accident occurs in the energy storage system, if effective suppression measures are not taken in time, the accident will occur.

[0003] Traditional fire protection design for energy storage prefabricated cabins usually uses a combination of gas fire extinguishing and water mist fire extinguishing (such as a combination of perfluorohexanone and fine water mist). Although this method has a certain fire extinguishing effect, it has obvious limitations when facing the thermal runaway problem unique to energy storage systems:

[0004] (1) Non-targeted fire extinguishing: Traditional fire extinguishing methods indiscriminately extinguish the entire energy storage prefabricated cabin, and cannot accurately act on the source of thermal runaway for rapid isolation and cooling. This method not only reduces the efficiency of fire extinguishing, but may also delay the best time to control thermal runaway, increasing the risk of the accident expanding.

[0005] (2) Property loss caused by misoperation: As traditional fire protection systems lack sophisticated control over the characteristics of energy storage systems, misoperation may cause the entire energy storage compartment to be extinguished. This unnecessary activation not only causes the failure or scrapping of the battery pack in the battery compartment, resulting in economic losses, but may also interrupt the normal operation of the energy storage system and affect the stability of the power system.

[0006] In order to solve the above problems, the present invention provides an inter-cluster isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage, which effectively improves the response efficiency and reliability of the fire-fighting system by accurately locating the thermal runaway source and implementing targeted fire-fighting measures. Summary of the invention

[0007] The purpose of the present invention is to provide an inter-cluster isolation water immersion fire-fighting prefabricated cabin for electrochemical energy storage, which can achieve rapid response and effective control of thermal runaway accidents of energy storage batteries through inter-cluster isolation design and water immersion fire extinguishing system.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] An inter-cluster isolation type water-immersion fire-fighting prefabricated cabin for electrochemical energy storage, comprising a cabinet container, the cabinet container comprising a main cabinet and n cabinet doors, n-1 isolation baffles installed in the main cabinet, dividing the cabinet container into n independent cabins, one of which is an auxiliary control cabin, and the rest are energy storage battery cabins;

[0010] A fire extinguishing device is provided above the interior of the main cabinet, and the fire extinguishing device includes two groups of fire pipes, solenoid valves and sensor components. The fire pipes include a main pipe and multiple branch pipes. The main pipe is horizontally arranged, one end is a closed end, and the other end is a pipe interface, which can be connected to an external water source, and the pipe interface is arranged in the auxiliary control cabin. The branch pipes are vertically connected to the bottom of the pipe wall of the main pipe, and the energy storage battery compartment is provided with branch pipes. Solenoid valves are installed on the branch pipes, and the solenoid valves interact with the fire control system. The sensor assembly is installed in the energy storage battery compartment and is electrically connected to the fire control system.

[0011] When thermal runaway occurs in the battery cluster in the energy storage battery compartment, the sensor assembly feeds back a signal to the fire control central system. The fire control central system receives the signal and opens the solenoid valve in the energy storage battery compartment, and floods the thermal runaway battery cluster in the energy storage battery compartment with water through an external water source.

[0012] In a further embodiment, the bottom and side surfaces of the isolation baffle are connected to the main cabinet, and a gap exists between the top of the isolation baffle and the inner upper surface of the main cabinet for installing the fire extinguishing device.

[0013] Through the above technical solution, installation space is provided for the fire extinguishing device in the cabinet.

[0014] In a further embodiment, the cabinet door is rotatably connected to the main cabinet body via a hinge, a locking rod is vertically provided on the outer surface of the cabinet door, and lock seats are welded at corresponding positions on the top beam and base of the main cabinet body at both ends of the locking rod, and the lock seat is adapted to the locking rod.

[0015] Through the above technical solution, when the cabinet door needs to be closed, a closed space is formed between the main cabinet body and the cabinet door through the cooperation of the lock rod and the lock seat and the rotation of the cabinet door.

[0016] In a further embodiment, a first bracket and a second bracket are installed on the outer surface of the cabinet door from top to bottom, a plurality of the first bracket and the second bracket are provided, the first brackets are installed at intervals, the second brackets are installed at intervals, and the locking rod passes through the first bracket and the second bracket.

[0017] Through the above technical solution, the locking rod can stably move up and down along the vertical direction of the cabinet door.

[0018] In a further embodiment, a limit rod is installed on the lock rod, the limit rod is perpendicular to the extension direction of the lock rod, and a buckle matched with the limit rod is installed on the outer surface of the cabinet door; and a handle is installed on the cabinet door.

[0019] The above technical solution makes it easy to open and close the cabinet door.

[0020] In a further embodiment, a sealing strip is installed on a side of the cabinet door away from the hinge, and a pressure relief and explosion-proof plate is installed on the inner surface of the cabinet door.

[0021] The above technical solution can prevent external dust and impurities from entering the cabin, and can effectively relieve pressure when the pressure inside the cabin is too high.

[0022] In a further embodiment, a top hook hole and a bottom hook hole are respectively provided on both sides of the top beam and the base of the main cabinet, and a grounding copper busbar is provided on the main cabinet.

[0023] Through the above technical solution, the possibility of deformation and damage of the cabinet container during the lifting process is reduced, which is convenient for the staff to install it. In addition, the grounding copper busbar protects the safety of the staff and equipment during this process and improves the stability and reliability of the device.

[0024] In a further embodiment, an air exhaust vent and a pressure exhaust vent are provided in the energy storage battery compartment.

[0025] Through the above technical solution, the air in the energy storage battery compartment can circulate, avoiding heat accumulation, ensuring that the battery system can still maintain good heat dissipation effect when running at high load, and extending the service life of the battery; in addition, the battery will produce hydrogen and oxygen during the discharge process. The function of the exhaust vent and the pressure relief vent is to discharge these gases to prevent the heat and gas generated by the energy storage battery compartment from being unable to dissipate, causing the temperature and pressure inside the energy storage battery compartment to continue to rise, thereby causing the battery to explode.

[0026] In a further embodiment, the sensor assembly includes a temperature sensor, a smoke sensor, and a pressure sensor.

[0027] Through the above technical solution, the environmental status inside the prefabricated cabin can be monitored in real time to ensure the efficient operation of the system.

[0028] Beneficial effects: The present invention adopts cluster isolation design and water immersion fire extinguishing technology, which can achieve accurate positioning and rapid fire extinguishing of thermal runaway battery clusters in the energy storage battery compartment. The whole cluster large-volume water immersion fire extinguishing method significantly improves the fire extinguishing efficiency, avoids the risk of heat spread caused by traditional fire fighting methods due to delayed response or insufficient fire extinguishing effect, and reduces secondary property losses after fire; real-time sensor components are used to detect environmental changes in the battery compartment, and the central control system quickly executes fire extinguishing commands to accurately extinguish the fire, which greatly improves the safety and stability of the energy storage system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a schematic diagram of the structure of the cabinet door in the present invention.

[0031] Figure 3 It is a structural schematic diagram of the fire extinguishing device in the present invention.

[0032] Figure numerals: 1. Main cabinet; 2. Cabinet door; 3. Hinge; 4. Grounding copper busbar; 5. Top hook hole; 6. Pipe interface; 7. Exhaust vent; 8. Auxiliary control compartment; 9. Pressure discharge port; 10. Bottom hook hole; 11. First bracket; 12. Second bracket; 13. Lock rod; 14. Energy storage battery compartment; 15. Handle; 16. Buckle; 17. Lock seat; 18. Main pipeline; 19. Branch pipeline; 20. Sensor assembly; 21. Isolation baffle. DETAILED DESCRIPTION

[0033] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0034] Since energy storage batteries are prone to thermal runaway due to overcharging, short circuit or external environmental influences during operation, resulting in fire or explosion accidents, and traditional firefighting methods are difficult to quickly control the chain reaction caused by thermal runaway, posing a threat to the safe operation of energy storage facilities. Based on this, the present invention proposes an inter-cluster isolation water immersion fire-fighting prefabricated cabin to quickly and efficiently suppress the heat spread of thermal runaway battery clusters and improve the overall safety of the energy storage system.

[0035] In implementation 1, an inter-cluster isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage includes a cabinet container. The cabinet container includes a main cabinet 1 and n cabinet doors 2. n-1 isolation baffles 21 are installed in the main cabinet 1. The bottom and side of the isolation baffles 21 are connected to the main cabinet 1, dividing the cabinet container into n independent cabins, one of which is an auxiliary control cabin 8, and the rest are energy storage battery cabins 14; a fire-fighting device is provided above the inside of the main cabinet 1, and there is a gap between the top of the isolation baffle 21 and the inner upper surface of the main cabinet 1 for the installation of the fire-fighting device.

[0036] Specifically, Figure 2 As shown, the cabinet door 2 is rotatably connected to the main cabinet body 1 through the hinge 3, and a locking rod 13 is vertically provided on the outer surface of the cabinet door 2. The top beam and the base of the main cabinet body 1 are welded with lock seats 17 at the corresponding positions at both ends of the locking rod 13, and the lock seat 17 is adapted to the locking rod 13. When the cabinet door 2 rotates to form a closed space between the main cabinet body 1 and the cabinet door 2, the locking rod 13 cooperates with the locking seat 17 to lock the cabinet door 2. The outer surface of the cabinet door 2 is installed with a first bracket 11 and a second bracket 12 from top to bottom. There are multiple first brackets 11 and second brackets 12, and the first brackets 11 are installed at intervals, and the second brackets 12 are installed at intervals. The locking rod 13 penetrates the first bracket 11 and the second bracket 12, so that the locking rod 13 can stably move up and down along the vertical direction of the cabinet door 2. A limit rod is installed on the lock rod 13, and the limit rod is perpendicular to the extension direction of the lock rod 13. A buckle 16 matched with the limit rod is installed on the outer surface of the cabinet door 2, and a handle 15 is installed on the cabinet door 2 to facilitate the staff to open and close the cabinet door 2.

[0037] As a preferred solution, a sealing strip is installed on the side of the cabinet door 2 away from the hinge 3 to prevent external dust and impurities from entering the cabin.

[0038] Specifically, Figure 3 As shown, the fire extinguishing device includes two groups of fire pipes, solenoid valves and sensor components 20. The fire pipes include a main pipe 18 and multiple branch pipes 19. The main pipe 18 is horizontally arranged, one end is a closed end, and the other end is a pipe interface 6, which can be connected to an external water source, and the pipe interface 6 is arranged in the auxiliary control cabin 8; the branch pipes 19 are vertically connected to the bottom of the pipe wall of the main pipe 18, and the energy storage battery cabin 14 is provided with branch pipes 19. Solenoid valves are installed on the branch pipes 19, and the solenoid valves interact with the fire control system; the sensor assembly 20 is installed in the energy storage battery cabin 14, including a temperature sensor, a smoke sensor and a pressure sensor, and is electrically connected to the fire control system for real-time monitoring of the environmental status in the prefabricated cabin.

[0039] The working principle of the fire extinguishing device is as follows: the isolation baffle 21 isolates the heat transfer between the battery clusters to reduce the risk of heat spread; the main pipe 18 is the main water flow channel, and the branch pipe 19 immerses the target cabin at a fixed point; the solenoid valve accurately controls the water flow to ensure the pertinence and efficiency of the fire fighting operation; the sensor component 20 provides real-time feedback of abnormal data in the cabin. The fire control system receives the data from the sensor component 20 in real time. When an abnormality is detected, such as a sharp increase in temperature in the energy storage battery cabin 14 or excessive smoke concentration, the central control system immediately identifies the thermal runaway cabin and activates the response mechanism. The solenoid valve of the corresponding cabin is opened, and the external water source enters the branch pipe 19 through the main pipe 18, forming a high-flow water column to immerse the entire target battery cluster for fire extinguishing, completely cooling it down and blocking the fire source.

[0040] In Example 2, Figure 1 and Figure 3 As shown, a cluster-isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage includes a cabinet container with a length of 6.5 meters, a width of 2.5 meters, and a height of 2.5 meters. The cabinet container is divided into 6 energy storage battery compartments 14 and a radiation control compartment by an isolation baffle 21. Each compartment is designed with a separate cabinet door 2 and an explosion-proof pressure relief plate is installed on the inner surface of the cabinet door 2, so that the pressure inside the compartment can be effectively relieved when the pressure is too high; the energy storage battery compartment 14 is provided with an exhaust port 7 and a pressure relief port 9 to allow the air in the energy storage battery compartment 14 to circulate, avoid heat accumulation, ensure that the battery system can still maintain a good heat dissipation effect when running at high load, and extend the service life of the battery; the exhaust battery generates hydrogen and oxygen during the discharge process, so as to prevent the heat and gas generated by the energy storage battery compartment 14 from being unable to dissipate, so that the temperature and pressure inside the energy storage battery compartment 14 continue to rise, thereby causing the battery to explode. The cabinet container is equipped with two 73mm standard fire-fighting pipelines, which are mutually primary and standby, and can also be used to transport water for fire-fighting at the same time. The fire-fighting pipeline includes a main pipeline 18 and six branch pipelines 19, which correspond to six battery compartments respectively. The branch pipelines 19 are designed with remotely controlled solenoid valves that can be linked with the fire-fighting host.

[0041] When a fire occurs, the duration of a single compartment being submerged is calculated as follows, based on the flow calculation formula:

[0042] Flow rate = pipe cross-sectional area * flow rate

[0043] Flow rate: The water flow rate is usually 1.5m / s, and the pipe cross-sectional area is π*(pipe diameter / 2)^2

[0044] The current pipeline is DN65, with a diameter of 73mm

[0045] Calculation process: pipe cross-sectional area = π × (0.073 / 2)^2 = 0.004183 square meters,

[0046] Flow rate = 0.004183 × 1.5 = 0.00627 cubic meters per second, or 22.57 cubic meters per hour

[0047] Cabin volume: about 1.2m3 (minus PACK)

[0048] Flooding time: volume / water inflow ≈ 3.19 min

[0049] It can be concluded that if one fire-fighting pipe is filled with water to extinguish the fire, the entire cluster can be effectively submerged in 3 minutes, and if two pipes are filled with water at the same time, the entire cluster can be effectively submerged in 1.5 minutes.

[0050] In this embodiment, the inter-cluster isolation design is combined with water immersion fire extinguishing technology. The isolation baffle 21 physically separates the battery clusters to reduce heat conduction. At the same time, the fire control system monitors the temperature, smoke, pressure and other parameters in the cabin in real time through the sensor assembly 20. When thermal runaway occurs, the system accurately controls the opening of the solenoid valve to quickly immerse the entire cluster in water. A large amount of water directly acts on the thermal runaway battery cluster, quickly absorbing heat and interrupting the oxygen supply, inhibiting the spread of thermal runaway.

[0051] In this embodiment, the cabinet container is divided into independent cabins by an isolation baffle 21. The auxiliary control cabin 8 is centrally arranged with the fire control system and the fire pipe interface 6, which is separated from the energy storage battery cabin 14 to ensure the unified management and maintenance convenience of the fire pipes. The main pipeline 18 and the branch pipeline 19 set in the fire extinguishing device are controlled by solenoid valves to facilitate the separate fire extinguishing of the target cabin. The multiple monitoring functions of the sensor assembly 20 improve the sensitivity and accuracy of thermal runaway identification.

[0052] In this embodiment, the sensor assembly 20, the fire fighting pipe, and the solenoid valve assembly form a complete fire fighting system through electrical connection and pipe layout. When a fire fighting response is triggered, the various components work together to quickly complete the fire fighting operation.

[0053] In this embodiment, the connection position between the branch pipe 19 and the main pipe 18 is located below the pipe wall, so that when fire fighting is required, the water flow can quickly act on the target cabin.

[0054] In this embodiment, the sensor assembly 20 is arranged in the energy storage battery compartment 14 to detect the temperature, smoke and pressure parameters of the battery cluster in real time. When thermal runaway occurs in a certain energy storage battery compartment 14, the sensor assembly 20 will feed back the abnormal signal to the fire control system. After analyzing the signal, the fire control system quickly locates the abnormal compartment and controls the corresponding solenoid valve to open. The external water source enters the branch pipe 19 through the main pipe 18, directly acting on the thermal runaway battery cluster, realizing the water immersion fire extinguishing process of the entire cluster. In this process, the water flow not only absorbs the heat released by the battery cluster, but also isolates oxygen through physical covering, thereby effectively suppressing the spread of thermal runaway and reducing the risk of fire.

[0055] In Example 3, Figure 1 As shown, the upper and lower sides of the cabinet container are respectively provided with a top hook hole 5 and a bottom hook hole 10, and a grounding copper busbar 4 is installed to reduce the possibility of deformation and damage of the cabinet container during the lifting process, making it easier for the staff to install it. In addition, the grounding copper busbar 4 protects the safety of the staff and equipment during this process and improves the stability and reliability of the device.

[0056] Compared with the prior art, the present invention has the following advantages:

[0057] (1) Performance improvement: The cluster isolation design and water immersion fire extinguishing technology are used to accurately locate and quickly extinguish the thermal runaway battery cluster in the energy storage battery compartment 14. The large-volume water immersion fire extinguishing method significantly improves the fire extinguishing efficiency and avoids the risk of heat spread caused by traditional fire fighting methods due to delayed response or insufficient fire extinguishing effect. Through real-time monitoring and precise fire extinguishing, the safety and stability of the energy storage system operation are greatly improved.

[0058] (2) Cost savings: Firefighting components are centrally managed through the fire control system, which reduces additional manual intervention and complex fire extinguishing system layout, and reduces system maintenance and operating costs. In addition, the firefighting pipeline design is simple and efficient, supporting rapid installation and modular expansion, thereby reducing production and deployment costs.

[0059] (3) Increased efficiency: The real-time sensor assembly 20 is used to detect environmental changes in the battery compartment, and the fire-fighting command is quickly executed through the central control system, which greatly shortens the response time. Compared with traditional fire-fighting methods, it can quickly intervene in the early stage of thermal runaway to prevent the spread of fire, thereby improving the efficiency of the entire fire-fighting process.

[0060] (4) Environmentally friendly: Water is used as the main fire extinguishing medium, which is non-toxic and harmless, avoiding the harmful gases or environmental pollution that may be generated in traditional fire fighting methods. It also accurately locates the fire fighting water in the thermal runaway cabin, avoiding the waste of water resources and embodying the concept of environmental protection.

[0061] (5) Convenience of use: The fire control system and pipe interface 6 are centrally arranged in the auxiliary control cabin 8, which simplifies the equipment installation and operation process. Users only need to monitor and maintain the fire protection components through the central control system to achieve efficient management of the entire system. The cabinet door 2 is designed to be easy to open and close and maintain, further improving the convenience of operation.

[0062] (6) Enhanced safety: The physical separation design of the isolation baffle 21 effectively reduces the impact of the thermal runaway battery cluster on other cabins. The fire control system in the auxiliary control cabin 8 is independently arranged to ensure that the system can still operate reliably under extreme conditions. At the same time, the sensor component 20 monitors the abnormal status in the cabin in multiple dimensions, further improving the accuracy and safety of fire response.

[0063] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. An inter-cluster isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage, comprising a cabinet container, characterized in that: The cabinet container comprises a main cabinet (1) and n cabinet doors (2), wherein n-1 isolation baffles (21) are installed in the main cabinet (1) to divide the cabinet container into n independent cabins, one of which is an auxiliary control cabin (8) and the others are energy storage battery cabins (14); A fire extinguishing device is provided above the interior of the main cabinet (1), the fire extinguishing device comprising two groups of fire pipes, a solenoid valve and a sensor assembly (20), the fire pipe comprising a main pipe (18) and a plurality of branch pipes (19), the main pipe (18) being arranged horizontally, having one end being a closed end and the other end being a pipe interface (6) which can be connected to an external water source, and the pipe interface (6) being arranged in the auxiliary control cabin (8), the branch pipe (19) being vertically connected to the lower part of the pipe wall of the main pipe (18), and the energy storage battery cabin (14) being provided with a branch pipe (19), the branch pipe (19) being provided with a solenoid valve which interacts with a fire central control system, and the sensor assembly (20) being installed in the energy storage battery cabin (14) and being electrically connected to the fire central control system; When thermal runaway occurs in the battery cluster in the energy storage battery compartment (14), the sensor assembly (20) feeds back a signal to the fire control central system, which receives the signal and opens the solenoid valve in the energy storage battery compartment (14), flooding the thermal runaway battery cluster in the energy storage battery compartment (14) with water through an external water source.

2. The inter-cluster isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage according to claim 1, characterized in that: The bottom and side surfaces of the isolation baffle (21) are connected to the main cabinet (1), and a gap exists between the top of the isolation baffle (21) and the inner upper surface of the main cabinet (1) for installing the fire extinguishing device.

3. The inter-cluster isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage according to claim 1, characterized in that: The cabinet door (2) is rotatably connected to the main cabinet body (1) via a hinge (3); a locking rod (13) is vertically provided on the outer surface of the cabinet door (2); a locking seat (17) is welded to the top beam and the base of the main cabinet body (1) at corresponding positions at both ends of the locking rod (13); and the locking seat (17) is adapted to the locking rod (13).

4. The inter-cluster isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage according to claim 3 is characterized in that: The outer surface of the cabinet door (2) is provided with a first bracket (11) and a second bracket (12) from top to bottom, and a plurality of the first brackets (11) and the second brackets (12) are provided, the first brackets (11) are installed at intervals, and the second brackets (12) are installed at intervals, and the locking rod (13) passes through the first brackets (11) and the second brackets (12).

5. The inter-cluster isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage according to claim 3 is characterized in that: A limit rod is installed on the lock rod (13), the limit rod is perpendicular to the extension direction of the lock rod (13), and a buckle (16) matched with the limit rod is installed on the outer surface of the cabinet door (2); and a handle (15) is installed on the cabinet door (2).

6. The inter-cluster isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage according to claim 3, characterized in that: A sealing strip is installed on the side of the cabinet door (2) away from the hinge (3), and a pressure relief and explosion-proof plate is installed on the inner surface of the cabinet door (2).

7. The inter-cluster isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage according to claim 1, characterized in that: A top hook hole (5) and a bottom hook hole (10) are respectively provided on both sides of the top beam and the base of the main cabinet (1), and a grounding copper busbar (4) is provided on the main cabinet (1).

8. The inter-cluster isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage according to claim 1, characterized in that: An air exhaust port (7) and a pressure exhaust port (9) are provided in the energy storage battery compartment (14).

9. The inter-cluster isolated water-immersed fire-fighting prefabricated cabin for electrochemical energy storage according to claim 1, characterized in that: The sensor assembly (20) comprises a temperature sensor, a smoke sensor and a pressure sensor.

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