Energy storage battery prefabricated cabin submerged type rapid fire fighting system

Abstract

The utility model relates to a kind of energy storage battery prefabricated cabin submerged type rapid fire-fighting system, by fire alarm system, fireproof explosion-proof watertight prefabricated cabin and fire extinguishing system composition;Fire alarm system is composed of alarm linkage control host, fire alarm detector, fire image detector, electrical fire temperature detector, fireproof explosion-proof liquid level sensor and fireproof explosion-proof temperature sensor;Fireproof explosion-proof watertight prefabricated cabin is composed of fireproof explosion-proof watertight cabin, fireproof explosion-proof bulkhead, fireproof explosion-proof watertight door, explosion relief cabin and heat dissipation port;Fire extinguishing system is composed of fire extinguishing agent total storage tank, pressurizing equipment, conveying pipe network, fire extinguishing agent injection control valve, fire extinguishing agent release pipe, fire extinguishing agent overflow pipe, fire extinguishing agent vent pipe.Based on the realization of external and internal fireproof explosion-proof isolation in prefabricated cabin, through the linkage design of fire alarm system and fire extinguishing system, the rapid alarm, positioning and accurate fire extinguishing of fire are realized, and the extinguishing efficiency, effectiveness and safety are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of fire protection facilities technology, specifically to a flood-type rapid fire-fighting system for prefabricated energy storage battery compartments, applicable to fire extinguishing of prefabricated battery compartments and commercial battery containers. Background Technology

[0002] Energy storage batteries primarily utilize ternary lithium batteries, lithium iron phosphate batteries, and lead-acid batteries. Although lithium iron phosphate batteries are relatively stable, they still pose risks of short-circuit explosions and fires. In large-scale energy storage systems, the sheer number and dense arrangement of batteries can easily lead to overcharging and over-discharging issues due to their inconsistencies. Existing battery management systems mainly prevent overcharging by measuring module surface temperature, voltage, and state of charge (SOC), but this method is unreliable and cannot effectively prevent battery failures from causing thermal runaway, which could then trigger a chain reaction in surrounding batteries and result in large-scale fires.

[0003] Currently, fire management for energy storage battery fires mainly relies on online detection of battery temperature and flammable and explosive gases, fire detectors, and fire suppression systems inside and outside the battery cabinet (such as built-in or external gas fire suppression systems, and external fine water mist or water spray fire suppression systems). However, these systems generally suffer from problems such as ineffective fire separation, fire spread, poor cooling and explosion suppression effects of extinguishing agents, fire suppression system failure, and poor safety for firefighters. This leads to significant challenges for the fire protection systems of energy storage power stations in terms of economy, effectiveness, and safety.

[0004] In recent years, the energy storage industry has experienced frequent fire accidents. On April 16, 2021, a fire broke out at an energy storage power station in Fengtai District, Beijing, resulting in the deaths of two firefighters, injuries to one, and direct economic losses of 16.6081 million yuan. On July 30 of the same year, a fire broke out at Tesla's Megapack energy storage system in Australia, lasting for four days and requiring more than 150 firefighters to bring it under control. In September and October 2024, the energy storage industry experienced eight fires within two months, including a fire at a battery storage facility of a natural gas and power company in San Diego, USA, and a lithium battery explosion and fire at Alibaba Cloud's Singapore data center. In 2025, the South Korean energy storage industry experienced multiple fires within three months, with the fire on March 9 causing direct economic losses of up to 10 billion won.

[0005] Analysis of fire protection systems and fire cases in the energy storage industry reveals the following problems with fire protection in prefabricated battery compartments: 1) Fire and explosion prevention issues in battery compartments: The battery compartments are large, with high-capacity, high-voltage, and densely packed battery clusters. There are no fire and explosion-proof barriers between the battery clusters. In the event of a fire, it can easily spread between the clusters, causing a large-scale fire. Once the fire reaches a certain level, it can lead to the entire compartment burning and exploding, impacting external equipment, the environment, and personnel. 2) Fire suppression system issues in battery compartments: To prevent short circuits, internal gas extinguishing systems are typically installed inside the battery clusters. One method is to directly install prefabricated gas extinguishing packs inside the battery clusters; another is to reserve extinguishing interfaces outside the battery clusters, injecting gas extinguishing agents into the battery packs during a fire. In addition, water spray or fine water mist extinguishing systems are usually installed inside the battery compartments, and multiple extinguishing systems such as fire hydrants are installed externally. However, since battery fires are mostly caused by thermal runaway resulting in the explosion and combustion of flammable and explosive chemical substances within the battery, gaseous or water mist extinguishing agents are ineffective at extinguishing fires inside the battery cluster due to factors such as the battery casing, battery materials obstructing the flames, high-temperature evaporation at the fire site, heat radiation from the fire site, and the high-temperature flammable and explosive chemical energy of the battery. They cannot achieve stable and effective contact, cooling, and explosion suppression of the flammable and explosive chemical substances and explosive chemical energy inside the battery. Therefore, it is essential to conduct research on initial fire alarm systems, fire location, fireproof and explosion-proof partitions, and rapid fire suppression for both the internal and external environments of battery compartments. Utility Model Content

[0006] This utility model provides a flooded rapid fire-fighting system for prefabricated energy storage battery compartments, mainly focusing on the research of initial fire alarm and location of battery cabinets, fireproof and explosion-proof fire extinguishing separation between cabinets, cooling and explosion suppression of battery cabinets, and rapid fire extinguishing.

[0007] The specific technical solution is as follows: A prefabricated energy storage battery compartment flooded rapid fire-fighting system, the system comprising a fire alarm system, a fireproof and explosion-proof watertight prefabricated compartment and a fire extinguishing system; The fire alarm system is used for fire alarm and fire location, and consists of an alarm linkage control host, a fire alarm detector, a fire image detector, an electrical fire temperature detector, a fireproof and explosion-proof liquid level sensor, and a fireproof and explosion-proof temperature sensor. The fire image detector is installed outside the fireproof and explosion-proof watertight prefabricated cabin; the fire alarm detector, electrical fire temperature detector, fireproof and explosion-proof liquid level sensor and fireproof and explosion-proof temperature sensor are all installed inside the fireproof and explosion-proof watertight prefabricated cabin. The fireproof and explosion-proof watertight prefabricated compartment is used for fireproof, explosion-proof, and fire-extinguishing separation. It consists of a fireproof and explosion-proof watertight compartment, fireproof and explosion-proof partitions, fireproof and explosion-proof watertight doors, explosion-proof pressure relief compartments, and heat dissipation vents. Each fireproof and explosion-proof watertight prefabricated compartment is divided into multiple fireproof and explosion-proof watertight compartments by multiple vertical fireproof and explosion-proof partitions. Each fireproof and explosion-proof watertight compartment has a fireproof and explosion-proof watertight door on the front and an explosion-proof pressure relief compartment on the top. The fireproof and explosion-proof watertight compartments and the explosion-proof pressure relief compartments are connected by at least two heat dissipation vents. The heat dissipation vents are located on the top plate of the fireproof and explosion-proof watertight compartment. The fire extinguishing system is used to release extinguishing agent into the fireproof and explosion-proof watertight compartment where a fire occurs. It consists of a main extinguishing agent storage tank, pressurization equipment, delivery pipeline network, extinguishing agent injection control valve, extinguishing agent release pipe, extinguishing agent overflow pipe, and extinguishing agent venting pipe. The fire alarm detector, fire image detector, electrical fire temperature detector, fireproof and explosion-proof liquid level sensor, fireproof and explosion-proof temperature sensor, pressurization equipment, and extinguishing agent injection control valve are all electrically connected to the alarm linkage control host.

[0008] Furthermore, preferably, the alarm linkage control host is used to collect various fire signals and data, and control the fire extinguishing system to extinguish fires at fixed points and in fixed quantities; the fire image detector is used to collect fire images and reflect the fire location; the fire alarm detector is used for compartment fire alarm; the electrical fire temperature detector is used to detect the temperature of the battery clusters in the compartment; the fireproof and explosion-proof liquid level sensor is used to control the flooding height of the extinguishing agent release; the fireproof and explosion-proof temperature sensor is used to measure the temperature of the extinguishing agent after flooding in the battery cabinet, and control the fire extinguishing system components to release extinguishing agent to cool the high-temperature extinguishing agent.

[0009] Furthermore, preferably, at least two fire image detectors are installed in the image alarm area composed of multiple fireproof and explosion-proof watertight prefabricated compartments; one fire alarm detector, one fireproof and explosion-proof liquid level sensor, and one fireproof and explosion-proof temperature sensor are each installed in each fireproof and explosion-proof watertight compartment; and one electrical fire temperature detector is installed on each row of battery clusters in each fireproof and explosion-proof watertight compartment.

[0010] Furthermore, preferably, the fireproof and explosion-proof liquid level sensor and the fireproof and explosion-proof temperature sensor are installed on the side wall inside the fireproof and explosion-proof watertight compartment, 100mm from the top of the battery cluster.

[0011] Furthermore, preferably, the fire alarm detector is an infrared and ultraviolet dual-band fire detector.

[0012] Furthermore, preferably, each fireproof and explosion-proof watertight prefabricated compartment is divided into 2 to 4 fireproof and explosion-proof watertight compartments by vertical fireproof and explosion-proof partitions.

[0013] Furthermore, preferably, the explosion-proof pressure relief chamber is used for explosion-proof pressure relief of high-temperature and high-pressure gases generated by a fire, and it consists of a fire-proof and explosion-proof top plate, fire-proof and explosion-proof side plates, and side pressure relief ribs; the fire-proof and explosion-proof top plate is installed on the top of the fire-proof and explosion-proof pressure relief chamber; the fire-proof and explosion-proof side plates are installed between adjacent explosion-proof pressure relief chambers for fire-proof and explosion-proof separation of adjacent explosion-proof pressure relief chambers; the side pressure relief ribs are installed on the other exterior surfaces of the explosion-proof pressure relief chamber except for the surface where the fire-proof and explosion-proof partition is located, for pressure relief and explosion prevention.

[0014] Furthermore, preferably, the fireproof and explosion-proof side panel is a vertical extension of the fireproof and explosion-proof partition, the fireproof and explosion-proof partition is a double-layer partition with a 50mm hollow core, and the outside is coated with fireproof paint, the hollow core is filled with fireproof and heat-insulating rock wool, and the minimum fire resistance performance is not less than 1 hour.

[0015] Furthermore, preferably, the height of the explosion-proof pressure relief chamber is 300mm; and the net spacing between the metal explosion-proof ribs of the pressure relief rib side plate is no more than 70mm.

[0016] Furthermore, preferably, all components of the fireproof and explosion-proof watertight prefabricated cabin and all accessories connected thereto are made of fireproof and explosion-proof materials, and leak-proof designs are adopted at the joints to ensure the effectiveness of the fireproof and explosion-proof fire-fighting separation and flooding fire extinguishing of the fireproof and explosion-proof watertight prefabricated cabin.

[0017] Furthermore, preferably, the outlet of the main fire extinguishing agent storage tank is equipped with a pressurization device and a delivery pipeline network. The delivery pipeline network extends to the top of the fireproof and explosion-proof watertight prefabricated compartment and connects to the fire extinguishing agent release pipe. A fire extinguishing agent injection control valve is installed between the delivery pipeline network and the fire extinguishing agent release pipe. The fire extinguishing agent release pipe is located on the side wall near the top of the fireproof and explosion-proof watertight compartment, and several branch pipes are provided at its lower part. The branch pipes are staggered from the top of the battery cluster and the door opening position, and are connected to a leak-proof plastic pipe below them. The other end of the leak-proof plastic pipe extends to the bottom of the fireproof and explosion-proof watertight compartment. The fire extinguishing agent overflow pipe is located on the side wall of the fireproof and explosion-proof watertight compartment 200mm above the fireproof and explosion-proof liquid level sensor. The fire extinguishing agent venting pipe is located on the bottom side wall of the fireproof and explosion-proof watertight compartment.

[0018] Furthermore, preferably, the inlets of both the extinguishing agent overflow pipe and the extinguishing agent venting pipe are equipped with stainless steel filters; a single-phase check valve is installed on the external connection pipe of the extinguishing agent overflow pipe, and an S-shaped water trap with a depth greater than 50mm is installed on the external connection pipe of the extinguishing agent venting pipe.

[0019] The beneficial effects of this utility model are as follows: This fire protection system, by designing the prefabricated battery compartment as a fireproof, explosion-proof, and watertight prefabricated compartment, isolates the entire battery compartment from the outside environment, preventing the fire from spreading outwards. Simultaneously, vertical fireproof and explosion-proof partitions divide the interior of the prefabricated compartment into multiple compartments, transforming the originally continuous compartment into several independent fireproof and explosion-proof compartments. This confines the fire to multiple independent spaces, preventing the rapid spread of fire within the prefabricated compartment. This design successfully achieves fireproof and explosion-proof isolation both inside and outside the prefabricated compartment, and creates conditions for flooding fire suppression. Furthermore, the explosion-proof pressure relief chambers and heat dissipation vents at the top of each compartment can quickly release the high temperature and pressure generated by a fire, improving the fire safety protection level of the battery compartment.

[0020] Building upon this foundation, the fire protection system further integrates the fire alarm and extinguishing systems to rapidly detect fire signals and intelligently locate them. This ensures that alarms are issued quickly in the early stages of a fire, and the extinguishing system is activated for precise, targeted fire suppression. The extinguishing system can rapidly and accurately control the release amount and location of extinguishing agents using a flooding method, based on the location and scale of the fire. Simultaneously, it can extinguish fires in one or multiple compartments, improving extinguishing efficiency and reducing unnecessary waste of extinguishing agents. Furthermore, the linkage control between fire-resistant and explosion-proof temperature sensors and the extinguishing system further reduces the temperature of the extinguishing agents within the fire cabinet, ensuring the cooling and explosion suppression capabilities of flammable and explosive chemicals in the battery, preventing fire reignition, and improving extinguishing reliability and fire safety protection levels.

[0021] The coordinated operation of the entire system enables the fire protection system to rapidly flood, cool, suppress, and extinguish fires in multiple compartments simultaneously under extreme conditions, ensuring effective control of the fire even in the event of a large-scale fire. This greatly improves the economy, effectiveness, and safety of the fire protection system for prefabricated modular energy storage power stations. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a prefabricated energy storage battery compartment submerged rapid fire-fighting system according to this utility model; Figure 2 for Figure 1 A magnified view of a portion of the image; Figure 3 This is a schematic diagram of a fire alarm system. Figure 4 A structural schematic diagram of a fireproof, explosion-proof, watertight prefabricated cabin; Figure 5 This is a schematic diagram of a fire extinguishing system. Figure 6 A schematic diagram of the explosion-proof pressure relief chamber; In the diagram: A - Fire alarm system, A1 - Alarm linkage control host, A2 - Fire alarm detector, A3 - Fire image detector, A4 - Electrical fire temperature detector, A5 - Fireproof and explosion-proof liquid level sensor, A6 - Fireproof and explosion-proof temperature sensor. B-Fireproof and explosion-proof watertight prefabricated compartment, B1-Fireproof and explosion-proof watertight compartment, B2-Fireproof and explosion-proof partition, B3-Fireproof and explosion-proof watertight door, B4-Explosion-proof pressure relief compartment, B401-Fireproof and explosion-proof top plate, B402-Fireproof and explosion-proof side plate, B403-Side pressure relief rib, B5-Heat dissipation vent; C - Fire extinguishing system, C1 - Fire extinguishing agent main storage tank, C2 - Pressurization equipment, C3 - Delivery pipeline network, C4 - Fire extinguishing agent injection control valve, C5 - Fire extinguishing agent release pipe, C7 - Fire extinguishing agent overflow pipe, C8 - Fire extinguishing agent venting pipe. Detailed Implementation

[0023] To make the technical problems and solutions solved by this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "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 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.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] For example Figure 1 Figure 2As shown, a prefabricated energy storage battery submerged rapid fire suppression system comprises a fire alarm system A, a fireproof and explosion-proof watertight prefabricated compartment B, and a fire extinguishing system C. The fire alarm system A is used for fire alarm and fire location, and consists of an alarm linkage control host A1, a fire alarm detector A2, a fire image detector A3, an electrical fire temperature detector A4, a fireproof and explosion-proof liquid level sensor A5, and a fireproof and explosion-proof temperature sensor A6. The fireproof and explosion-proof watertight prefabricated compartment B is used for fireproof and explosion-proof fire extinguishing separation, and consists of a fireproof and explosion-proof watertight compartment B1, fireproof and explosion-proof partitions B2, fireproof and explosion-proof watertight doors B3, and an explosion-proof pressure relief compartment B4. Each fireproof and explosion-proof watertight prefabricated compartment B is divided into multiple fireproof and explosion-proof watertight compartments by multiple vertical fireproof and explosion-proof partitions B2. Compartment B1; The fire extinguishing system C is used to release extinguishing agent into the fireproof and explosion-proof watertight compartment B1 where a fire occurs, and consists of a main extinguishing agent storage tank C1, a pressurizing device C2, a delivery pipeline network C3, an extinguishing agent injection control valve C4, an extinguishing agent release pipe C5, an extinguishing agent overflow pipe C7, and an extinguishing agent venting pipe C8; The fire alarm detector A2, the fire image detector A3, the electrical fire temperature detector A4, the fireproof and explosion-proof liquid level sensor A5, the fireproof and explosion-proof temperature sensor A6, the pressurizing device C2, and the extinguishing agent injection control valve C4 are all electrically connected to the alarm linkage control host A1.

[0027] Based on the fireproof and explosion-proof watertight prefabricated compartment B, the fire-fighting system uses the fire alarm system A to promptly alarm and locate the fire, and links with the fire extinguishing system C to release extinguishing agent into the fireproof and explosion-proof watertight compartment B1. The system uses a flooding method to quickly extinguish the fire on the battery clusters inside the compartment. The entire fire extinguishing process is fast, precise, and effective.

[0028] like Figure 3 As shown, the fire alarm system A consists of an alarm linkage control host A1, a fire alarm detector A2, a fire image detector A3, an electrical fire temperature detector A4, a fireproof and explosion-proof liquid level sensor A5, and a fireproof and explosion-proof temperature sensor A6. This fire alarm system A can promptly detect the occurrence of a fire, automatically trigger an alarm, and intelligently locate the fire location.

[0029] Among them, the alarm linkage control host A1 is used to collect various fire signals and data, and control the fire extinguishing system C to extinguish the fire. The fire image detector A3 is used to collect fire images of multiple prefabricated cabins within its protection radius, reflecting the location of the fire. It is generally installed outside the fireproof and explosion-proof watertight prefabricated cabin B, and the number is measured in units of "image alarm areas composed of multiple fireproof and explosion-proof watertight prefabricated cabins B". At least two detectors are installed in each image alarm area, as detailed below. Figure 1 As shown, one fire image detector A3 is installed diagonally opposite each of the two fireproof and explosion-proof watertight prefabricated cabins B.

[0030] Fire alarm detector A2 is an infrared and ultraviolet dual-band fire detector, with one detector installed in each fireproof and explosion-proof watertight compartment B1, providing fire alarms for each compartment. Electrical fire temperature detector A4 is used to detect the temperature of the battery clusters within each fireproof and explosion-proof watertight compartment B1. One detector is installed on each row of battery clusters, typically with 2-4 rows of battery clusters in one compartment. When locating a fire, the alarm linkage control host A1 simultaneously receives fire images, alarm signals, and temperature data from the fire image detector A3, fire alarm detector A2, and electrical fire temperature detector A4. If the fire image shows an ignition point, or if the alarm signal and temperature exceed a set value, the fire location is determined, and the alarm linkage control host A1 then activates the fire extinguishing system C to perform targeted and quantitative fire suppression.

[0031] Fire-proof and explosion-proof liquid level sensor A5 is used to control the flooding height of the extinguishing agent release, and fire-proof and explosion-proof temperature sensor A6 is used to measure the temperature inside the cabinet after the extinguishing agent has flooded the fire. Based on this temperature, the system controls whether the extinguishing system C should release the extinguishing agent a second time to further reduce the extinguishing temperature. Therefore, one fire-proof and explosion-proof liquid level sensor A5 and one fire-proof and explosion-proof temperature sensor A6 are required in each fire-proof and explosion-proof watertight compartment B1. Furthermore, based on the required flooding height of the battery cluster, both sensors should be installed on the side wall inside the fire-proof and explosion-proof watertight compartment B1, 100mm from the top of the battery cluster.

[0032] like Figure 4 As shown, the fireproof and explosion-proof watertight prefabricated compartment B is used for fireproof and explosion-proof fire suppression separation, and consists of a fireproof and explosion-proof watertight compartment B1, a fireproof and explosion-proof partition B2, a fireproof and explosion-proof watertight door B3, an explosion-proof pressure relief compartment B4, and a heat dissipation vent B5. This fireproof and explosion-proof watertight prefabricated compartment B enables the entire battery compartment to form a fireproof and explosion-proof isolation from the outside world. Simultaneously, it is further divided into multiple fireproof and explosion-proof watertight compartments B1 by multiple vertical fireproof and explosion-proof partitions B2, further dividing the interior of the battery compartment into multiple fireproof and explosion-proof separation units. This allows the battery compartment to be isolated from both the outside and inside, effectively preventing the spread of fire.

[0033] The dimensions (length, width, height) of a typical fireproof and explosion-proof watertight prefabricated compartment B are approximately 6–12m × 2.3–2.8m × 2.5–3.1m. It is divided into 2–4 fireproof and explosion-proof watertight compartments B1 by vertical fireproof and explosion-proof partitions B2. Each fireproof and explosion-proof watertight compartment B1 has dimensions (length, width, height) of approximately 3–4m × 2.3–2.8m × 2.5–3.1m. The fireproof and explosion-proof partition B2 is a double-layered partition with a 50mm hollow core, coated with fire-retardant paint on the outside, and filled with fireproof and heat-insulating rock wool, with a minimum fire resistance of not less than 1 hour.

[0034] Each fireproof and explosion-proof watertight compartment B1 is equipped with a fireproof and explosion-proof watertight door B3 on the front, and an explosion-proof pressure relief compartment B4 with a height of 300mm is installed on the top. The fireproof and explosion-proof watertight compartment B1 and the explosion-proof pressure relief compartment B4 are connected by at least two heat dissipation vents B5, which are located on the top plate of the fireproof and explosion-proof watertight compartment B1. Figure 6 As shown, the explosion-proof pressure relief compartment B4 consists of a fire-proof and explosion-proof top plate B401, fire-proof and explosion-proof side plates B402, and side pressure relief ribs B403. The fire-proof and explosion-proof top plate B401 is located at the top of the fire-proof and explosion-proof pressure relief compartment B4. The fire-proof and explosion-proof side plates B402 are located between adjacent explosion-proof pressure relief compartments B4. These side plates B402 can be manufactured separately or are a vertical extension of the fire-proof and explosion-proof partition B2. Their structure and materials are the same as the fire-proof and explosion-proof partition B2, enabling fire-proof and explosion-proof separation between adjacent explosion-proof pressure relief compartments B4 and preventing the spread of fire between them. Side pressure relief ribs B403 are installed on the exterior surfaces of the explosion-proof pressure relief chamber B4, excluding the surface where the fireproof and explosion-proof side plate B402 is located. The net spacing between the metal explosion-proof ribs of the side pressure relief ribs B403 is no more than 70mm. The gaps between these ribs establish a channel between the explosion-proof pressure relief chamber B4 and the outside, which can be used to release the high temperature and high pressure generated by a fire and prevent explosion accidents caused by excessive pressure.

[0035] It should be noted that all components of the aforementioned fireproof and explosion-proof watertight prefabricated compartment B, as well as all connected accessories (such as cables, refrigeration pipes, and other ventilation and dehumidification systems integrated into the compartment), are made of fireproof and explosion-proof materials to ensure the effectiveness of the fireproof and explosion-proof fire extinguishing separation. Furthermore, the connections of these components and accessories are designed to prevent leakage and ensure the extinguishing agent does not leak and become ineffective.

[0036] like Figure 5 As shown, the fire extinguishing system C consists of a main extinguishing agent storage tank C1, a pressurization device C2, a delivery pipeline network C3, an extinguishing agent injection control valve C4, an extinguishing agent release pipe C5, a leak-proof plastic pipe C6, an extinguishing agent overflow pipe C7, and an extinguishing agent venting pipe C8. This fire extinguishing system C is linked to the fire alarm system A, dynamically releasing extinguishing agent into the fireproof and explosion-proof watertight compartment B1 based on the fire alarm and fire location information from the fire alarm system A, ensuring accurate and effective fire suppression.

[0037] The outlet of the main extinguishing agent storage tank C1 is equipped with a pressurization device C2 and a delivery pipeline C3. The delivery pipeline C3 extends to the top of the fireproof and explosion-proof watertight prefabricated cabin B and connects to the extinguishing agent release pipe C5. An extinguishing agent injection control valve C4 is installed between the delivery pipeline C3 and the extinguishing agent release pipe C5 to control the release of the extinguishing agent.

[0038] The pressurization equipment C2 is generally equipped with two pumps, one for standby and one for use. The delivery pipeline network C3 is reasonably laid out according to the number and location of the prefabricated battery compartments. Multiple fireproof and explosion-proof watertight compartments B1 within the same prefabricated battery compartment can share the same delivery pipeline. It is only necessary to install multiple branch pipes corresponding to the compartments on the delivery pipeline, and install fire extinguishing agent injection control valves C4 on the branch pipes. The fire extinguishing agent can be released to the target compartment (single or multiple) by opening and closing the fire extinguishing agent injection control valves C4.

[0039] The extinguishing agent release pipe C5 is a ring-shaped pipe located on the side wall near the top of the fireproof and explosion-proof watertight compartment B1. Several branch pipes are installed below it, staggered from directly above the battery clusters and the door openings, close to the compartment edge. Each branch pipe is connected at its bottom to a leak-proof plastic pipe C6, the other end of which extends to the bottom of the fireproof and explosion-proof watertight compartment B1. During normal operation, the extinguishing agent release pipe C5 is connected to the leak-proof plastic pipe C6, and any leaking extinguishing agent is diverted to the fireproof and explosion-proof watertight compartment B1 and discharged through the extinguishing agent vent pipe C8, preventing any impact on the normally functioning battery clusters. In the event of a fire, the fire will burn through the leak-proof plastic pipe C6, rapidly releasing the extinguishing agent into the compartment to submerge the burning battery clusters and extinguish the fire.

[0040] The extinguishing agent overflow pipe C7 is located on the side wall of the fireproof and explosion-proof watertight compartment B1, 200mm above the fireproof and explosion-proof liquid level sensor A4. The extinguishing agent vent pipe C8 is located on the bottom side wall of the fireproof and explosion-proof watertight compartment B1. Both the overflow pipe C7 and the vent pipe C8 are equipped with stainless steel filters to prevent the fire battery cluster assembly from flowing into the pipes and causing blockage. The external discharge pipes of the overflow pipe C7 and the vent pipe C8 can be connected to the same drainage system for unified collection and treatment of fire-fighting waste liquid after extinguishing, preventing environmental pollution. Furthermore, a single-phase check valve is installed on the external pipe of the overflow pipe C7 to prevent backflow of the extinguishing agent caused by pressure difference. The external pipe of the vent pipe C8 is equipped with an S-shaped water trap with a depth greater than 50mm. A certain amount of water will be stored in the S-shaped water trap to form a water seal, which has the functions of preventing moisture and preventing small animals from entering the compartment.

[0041] It should be noted that the components of the fire alarm system A, the main extinguishing agent storage tank C1, the pressurization equipment C2, and the extinguishing agent injection control valve C4 are all existing equipment available on the market; the delivery pipeline C3, the extinguishing agent release pipe C5, the extinguishing agent overflow pipe C7, and the extinguishing agent venting pipe C8 are all made of ordinary steel pipes; the leak-proof plastic pipe C6 should be a thin-walled plastic pipe so that it can be quickly burned off; the extinguishing agent can be water or other fire-fighting liquids.

[0042] Working Principle: When a fire occurs in the prefabricated battery compartment, the alarm linkage control host A1 receives signals from the fire image detector A3, fire alarm detector A2, and electrical fire temperature detector A4. Based on the fire image, alarm signal, and changes in battery cluster temperature, it identifies the location where one of the following conditions is met: a fire image, an alarm signal, or a temperature rise exceeding a set value (generally 200℃). It then cuts off the power circuit to the burning battery cluster and activates the fire extinguishing system C. The pressurization device C2 is activated, and the corresponding extinguishing agent injection control valve C4 at the top of the fireproof and explosion-proof watertight compartment B1 is opened. The extinguishing agent is released along the delivery pipeline C3 and the extinguishing agent release pipe C5 into the fireproof and explosion-proof watertight compartment B1, quickly submerging the battery clusters inside the fire-prone battery cabinet. Generally, when the battery clusters are submerged by more than 100mm (approximately 8 minutes), the fireproof and explosion-proof liquid level sensor A5 detects the extinguishing agent, triggering the pressurization device C2 and the extinguishing agent injection control valve C4 to close, stopping the release of the extinguishing agent.

[0043] Meanwhile, to prevent the extinguishing agent temperature from becoming too high after the fire is extinguished, which could affect surrounding equipment and the environment, the fireproof and explosion-proof temperature sensor A6 will further monitor the extinguishing agent temperature after the fire is extinguished. If the extinguishing agent temperature is higher than the set value (generally 50℃), the alarm linkage control host A1 will control the fire extinguishing system C to release extinguishing agent for 10 seconds more, repeating this process multiple times until the extinguishing agent temperature is lower than the set value (50℃), thus completing the fire extinguishing operation.

[0044] During this process, excess extinguishing agent overflows and is discharged through extinguishing agent overflow pipe C7. After the fire is extinguished, the extinguishing agent inside the cabinet is discharged through extinguishing agent vent pipe C8. The fireproof and explosion-proof watertight prefabricated compartment B plays a good role in isolation and environmental protection, forming a fireproof and explosion-proof isolation unit between the battery prefabricated compartment and the outside world, as well as between compartments, effectively preventing the spread of fire and preventing the spread of fire-fighting waste liquid and environmental pollution after extinguishing. In addition, the explosion-proof pressure relief compartment B4 and the heat dissipation vent B5 on the top of the compartment can effectively release the high temperature and high pressure generated by the fire, avoiding the risk of the cabinet being exploded by high temperature, high pressure, chemical flammable and explosive locations.

[0045] The present invention has been described in detail above through specific and preferred embodiments. However, those skilled in the art should understand that the present invention is not limited to the embodiments described above. Any modifications or equivalent substitutions made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A prefabricated energy storage battery compartment flooded rapid fire suppression system, characterized in that: The system consists of a fire alarm system (A), a fireproof and explosion-proof watertight prefabricated compartment (B), and a fire extinguishing system (C); The fire alarm system (A) is used for fire alarm and fire location, and consists of an alarm linkage control host (A1), a fire alarm detector (A2), a fire image detector (A3), an electrical fire temperature detector (A4), a fireproof and explosion-proof liquid level sensor (A5), and a fireproof and explosion-proof temperature sensor (A6). The fire image detector (A3) is installed outside the fireproof and explosion-proof watertight prefabricated cabin (B); the fire alarm detector (A2), electrical fire temperature detector (A4), fireproof and explosion-proof liquid level sensor (A5) and fireproof and explosion-proof temperature sensor (A6) are all installed inside the fireproof and explosion-proof watertight prefabricated cabin (B). The fireproof and explosion-proof watertight prefabricated compartment (B) is used for fireproof, explosion-proof, and fire-extinguishing separation, and consists of a fireproof and explosion-proof watertight compartment (B1), a fireproof and explosion-proof partition (B2), a fireproof and explosion-proof watertight door (B3), an explosion-proof pressure relief compartment (B4), and a heat dissipation vent (B5). Each fireproof and explosion-proof watertight prefabricated compartment (B) is divided into multiple fireproof and explosion-proof watertight compartments (B1) by multiple vertical fireproof and explosion-proof partitions (B2). Each fireproof and explosion-proof watertight compartment (B1) has a fireproof and explosion-proof watertight door (B3) on its front and an explosion-proof pressure relief compartment (B4) on its top. The fireproof and explosion-proof watertight compartments (B1) and the explosion-proof pressure relief compartments (B4) are connected by at least two heat dissipation vents (B5). The heat dissipation vents (B5) are located on the top plate of the fireproof and explosion-proof watertight compartment (B1). The fire extinguishing system (C) is used to release extinguishing agent into the fireproof and explosion-proof watertight compartment (B1) where a fire has occurred. It consists of a main extinguishing agent storage tank (C1), pressurization equipment (C2), delivery pipeline network (C3), extinguishing agent injection control valve (C4), extinguishing agent release pipe (C5), extinguishing agent overflow pipe (C7), and extinguishing agent venting pipe (C8). The fire alarm detector (A2), fire image detector (A3), electrical fire temperature detector (A4), fireproof and explosion-proof liquid level sensor (A5), fireproof and explosion-proof temperature sensor (A6), pressurization equipment (C2), and extinguishing agent injection control valve (C4) are all electrically connected to the alarm linkage control host (A1).

2. The prefabricated energy storage battery compartment flooded rapid fire suppression system according to claim 1, characterized in that: The alarm linkage control host (A1) is used to collect various fire signals and data, and control the fire extinguishing system (C) to link and extinguish fires at fixed points and in fixed quantities; the fire image detector (A3) is used to collect fire images and reflect the fire location; the fire alarm detector (A2) is used for compartment fire alarm; the electrical fire temperature detector (A4) is used to detect the temperature of the battery clusters in the compartment; the fireproof and explosion-proof liquid level sensor (A5) is used to control the flooding height of the extinguishing agent release; the fireproof and explosion-proof temperature sensor (A6) is used to measure the temperature of the extinguishing agent after flooding in the battery cabinet, and control the fire extinguishing system (C) components to release extinguishing agent to cool the high-temperature extinguishing agent.

3. The prefabricated energy storage battery compartment flooded rapid fire suppression system according to claim 1, characterized in that: At least two fire image detectors (A3) are installed in the image alarm area composed of multiple fireproof and explosion-proof watertight prefabricated compartments (B); one fire alarm detector (A2), one fireproof and explosion-proof liquid level sensor (A5), and one fireproof and explosion-proof temperature sensor (A6) are installed in each fireproof and explosion-proof watertight compartment (B1); one electrical fire temperature detector (A4) is installed on each row of battery clusters in each fireproof and explosion-proof watertight compartment (B1).

4. The prefabricated energy storage battery compartment flooded rapid fire suppression system according to claim 3, characterized in that: The fireproof and explosion-proof liquid level sensor (A5) and the fireproof and explosion-proof temperature sensor (A6) are installed on the side wall inside the fireproof and explosion-proof watertight compartment (B1), 100 mm from the top of the battery cluster.

5. The prefabricated energy storage battery compartment flooded rapid fire suppression system according to claim 1, characterized in that: Each fireproof and explosion-proof watertight prefabricated compartment (B) is divided into 2 to 4 fireproof and explosion-proof watertight compartments (B1) by vertical fireproof and explosion-proof partitions (B2).

6. The prefabricated energy storage battery compartment flooded rapid fire suppression system according to claim 1, characterized in that: The explosion-proof pressure relief chamber (B4) is used for explosion-proof pressure relief of high-temperature and high-pressure gases generated by a fire. It consists of a fireproof and explosion-proof top plate (B401), fireproof and explosion-proof side plates (B402), and side pressure relief ribs (B403). The fireproof and explosion-proof top plate (B401) is installed on the top of the fireproof and explosion-proof pressure relief chamber (B4). The fireproof and explosion-proof side plates (B402) are installed between adjacent explosion-proof pressure relief chambers (B4) for fireproof and explosion-proof separation between adjacent explosion-proof pressure relief chambers (B4). The side pressure relief ribs (B403) are installed on the other exterior surfaces of the explosion-proof pressure relief chamber (B4) except for the surface where the fireproof and explosion-proof side plates (B402) are located, for pressure relief and explosion prevention.

7. A prefabricated energy storage battery compartment flooded rapid fire suppression system according to claim 6, characterized in that: The fireproof and explosion-proof side panel (B402) is a vertical extension of the fireproof and explosion-proof partition (B2). The fireproof and explosion-proof partition (B2) is a double-layered partition with a 50mm hollow core, coated with fireproof paint on the outside, and filled with fireproof and heat-insulating rock wool in the hollow core. Its minimum fire resistance is not less than 1 hour.

8. A prefabricated energy storage battery compartment flooded rapid fire suppression system according to claim 6, characterized in that: The height of the explosion-proof pressure relief chamber (B4) is 300mm; the net spacing between the metal explosion-proof ribs of the pressure relief rib side plate (B403) is no more than 70mm.

9. A prefabricated energy storage battery compartment flooded rapid fire suppression system according to any one of claims 1-8, characterized in that: All components of the fireproof and explosion-proof watertight prefabricated cabin (B) and all accessories connected to it are made of fireproof and explosion-proof materials, and the connection points are designed to prevent leakage, so as to ensure the effectiveness of the fireproof and explosion-proof fire extinguishing separation and flooding fire extinguishing of the fireproof and explosion-proof watertight prefabricated cabin (B).

10. A prefabricated energy storage battery compartment flooded rapid fire suppression system according to claim 1, characterized in that: The outlet of the main extinguishing agent storage tank (C1) is equipped with a pressurization device (C2) and a delivery pipeline (C3). The delivery pipeline (C3) extends to the top of the fireproof and explosion-proof watertight prefabricated compartment (B) and connects to the extinguishing agent release pipe (C5). An extinguishing agent injection control valve (C4) is installed between the delivery pipeline (C3) and the extinguishing agent release pipe (C5). The extinguishing agent release pipe (C5) is located on the side wall near the top of the fireproof and explosion-proof watertight compartment (B1), and several [unclear - possibly related to equipment or facilities] are installed at its lower part. Branch pipes are staggered from the top of the battery cluster and the door opening position, and are connected to a leak-proof plastic pipe (C6) below them. The other end of the leak-proof plastic pipe (C6) extends to the bottom of the fireproof and explosion-proof watertight compartment (B1). The fire extinguishing agent overflow pipe (C7) is set on the side wall of the fireproof and explosion-proof watertight compartment (B1) 200mm above the fireproof and explosion-proof liquid level sensor (A4). The fire extinguishing agent venting pipe (C8) is set on the bottom side wall of the fireproof and explosion-proof watertight compartment (B1).

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