Station building-based energy storage power station safety protection structure and protection method

Abstract

Provided is a station building-based energy storage power station safety protection structure, comprising a plurality of battery clusters arranged within a battery room, the plurality of battery clusters being arranged in an array. A cooling air duct is arranged, within the configuration of a station building, at the rear of the battery clusters. The cooling air duct is provided with cold air outlets corresponding to each battery cluster row. Auxiliary air ducts, which connect to the cold air outlets, are provided and correspond to each battery cluster row. An air exchange vent is provided on each auxiliary air duct at an end facing away from the cooling air duct, and a waste heat utilization plate heat exchanger apparatus is arranged on an inner wall of the battery room, on a side furthest from the cold air outlets. A fire extinguishing system is provided within the station building, the fire extinguishing system comprising a plurality of aerosol fire-extinguishing apparatuses arranged on the inner walls of the station building, and a foam fire-extinguishing system arranged above the battery clusters. A sensor group is arranged on a top wall within the battery room, and the sensor group and the fire extinguishing system are electrically connected to a single controller.

Description

A safety protection structure and protection method for a station-type energy storage power station

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 2024101854421 filed in China on February 19, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the technical field of electric locomotive braking, and in particular to a safety protection structure and protection method for a station-type energy storage power station. Background Art

[0004] Electrochemical energy storage, a representative technology in the emerging energy storage sector, has seen explosive growth in installed capacity in recent years. Traditional electrochemical energy storage power stations often utilize prefabricated cabins. While this approach offers advantages such as easy equipment transportation and a simple construction process, it also faces challenges such as large floor space, a large number of cabins, significant equipment redundancy, high thermal management losses, limited firefighting methods, and poor O&M friendliness.

[0005] Against this backdrop, building-based energy storage technology is gaining increasing attention. Building-based energy storage, an integrated energy storage approach, places core storage equipment, such as battery systems, within a building. Building-based energy storage surpasses prefabricated storage in terms of space utilization, user-friendly operations and maintenance, system energy loss control, and overall power plant efficiency.

[0006] However, the high integration density and greater energy density of battery cells in station-type energy storage power plants place higher demands on battery thermal management and firefighting technology. When battery thermal management is substandard, station-type energy storage power plants are prone to fire. Currently, the commonly used liquid cooling thermal management method is not the preferred choice for station-type energy storage power plants. The high battery density makes liquid cooling equipment and piping complex, costly, and wasteful. Gas fire extinguishing systems commonly used in energy storage, such as heptafluoropropane and perfluorohexanone, have poor cooling and re-ignition resistance capabilities, and can only achieve limited fire suppression and re-ignition resistance through multiple spraying measures. For station-type energy storage power plants with extremely high battery energy density, the risk of battery fire re-ignition is even higher, making gaseous fire extinguishing agents unsuitable. Full flooding water fire extinguishing technology is the preferred option.

[0007] Therefore, the embodiments of the present disclosure propose a safety protection structure and a protection method for a station-type energy storage power station to solve the thermal management safety protection problem existing in the station-type energy storage power station. Summary of the Invention

[0008] The embodiments of the present disclosure aim to solve one of the technical problems in the related art at least to a certain extent.

[0009] To achieve the above-mentioned purpose, the embodiment of the present disclosure proposes a safety protection structure of a station-type energy storage power station, including a station building with a battery room, multiple battery clusters are arranged in the battery room, and multiple battery clusters are arranged in an array. A cooling air duct is arranged in the station building corresponding to the back of the battery cluster, and the cooling air duct is provided with a cold air outlet corresponding to each row of battery clusters, and an auxiliary air duct connected to the cold air outlet is provided corresponding to each row of battery clusters. An air exchange outlet is provided at one end of the auxiliary air duct away from the cooling air duct, and a waste heat utilization plate heat exchange device is provided on the side of the inner wall of the battery room away from the cooling outlet. A fire extinguishing system is provided in the station building, and the fire extinguishing system includes multiple groups of aerosol fire extinguishing devices arranged on the inner wall of the station building and a foam fire extinguishing system arranged above the battery cluster. A sensor group is provided on the top wall of the battery room, and the sensor group and the fire extinguishing system are electrically connected to the same controller.

[0010] The disclosed embodiment optimizes the air duct design to centrally manage the heat of multiple battery clusters within the battery compartment. It adopts a cooling solution that combines natural air cooling with air-cooled units, and an insulation solution that heats the indoor environment through centralized heating pipes. This significantly reduces the power consumption of energy storage and heat dissipation, and allows for efficient fire extinguishing in the event of thermal runaway of the battery cluster through a fire extinguishing system.

[0011] In some embodiments, the cooling air duct is connected to the external environment of the station building and is provided with an air inlet, and the cooling air duct is connected to a cooling air conditioner, and a wind shield is movably provided at the position of the air inlet.

[0012] In some embodiments, an exhaust fan is provided at the air exchange port.

[0013] In some embodiments, an ambient air supply port is provided on the auxiliary air duct at a middle position of the battery clusters corresponding to adjacent rows.

[0014] In some embodiments, baffles are provided on the outer sides of the four sides of the battery cluster perpendicular to the ground, and each baffle is provided with multiple vents, each vent is provided one-to-one corresponding to a single battery in the battery cluster, and a sealing plate that can completely block the vent is movably provided at each vent, and the sealing plate is in a normally open state to allow cooling air to pass through the battery cluster. When the battery cluster is extinguished, the sealing plate moves to block the vent.

[0015] In some embodiments, the sensor group includes a temperature detector, a smoke detector, and a combustible gas detector.

[0016] In some embodiments, the aerosol fire extinguishing device is suspended on the inner wall of the battery chamber at a position corresponding to a position close to the battery cluster, and the aerosol fire extinguishing device is electrically connected to a controller.

[0017] In some embodiments, the foam fire extinguishing system includes a foam fire main line arranged on the top of the battery chamber, a foam fire extinguishing device is provided on one side wall of the battery chamber, a foam fire sprinkler is provided on the foam fire main line corresponding to each battery cluster position, and the foam fire extinguishing device is electrically connected to the controller.

[0018] In some embodiments, a liquid collection base is provided under the battery cluster, a floor drain is provided through the bottom of the liquid collection base, an underground liquid collection area is provided under the corresponding battery room of the station building, and the floor drain is connected to the underground liquid collection area.

[0019] The present disclosure also provides a safety protection method for a station-type energy storage power station, including a temperature control method and a fire protection method.

[0020] The temperature control method includes supplying cooling air into the cooling air duct based on the need for cooling, the cooling air entering the auxiliary air duct along the cooling air duct from the cold air outlet to cool the battery cluster in the auxiliary air duct, and the cooling air after cooling is discharged from the air exchange outlet. After cooling the battery cluster, the cooling air enters the battery room and enters the cooling air conditioner through natural circulation; based on the need for heat preservation, a waste heat utilization plate heat exchange device coupled with the waste heat of the power plant is used to heat the waste heat utilization plate heat exchange device using a centralized heating pipe network to control the battery room temperature at 25-30°C;

[0021] The fire fighting method includes: multiple sensor groups independently detecting the temperature, combustible gas and smoke in the battery room; based on the occurrence of electrical fire or other types of fire in the battery compartment, if the three types of detection values ​​of any group of sensor groups reach the threshold, the aerosol fire extinguishing device adjacent to the sensor group is activated to extinguish the fire; if the fire is still not extinguished after the aerosol is activated, the foam fire extinguishing system is manually activated to extinguish the fire; if battery thermal runaway occurs, the battery management system of the battery pack in the battery cluster cuts off the power supply of the entire battery cluster, and based on the sensor group on the top of the battery compartment detecting that the three types of detection values ​​have reached the threshold, it is determined that battery thermal runaway has occurred, and the sealing panel is closed, and the foam fire extinguishing system performs flooding fire fighting on the battery cluster where battery thermal runaway has occurred.

[0022] In some embodiments, the temperature control method needs to replace the cooling air source according to the external seasonal environment when cooling. In summer application scenarios, the wind shield at the air inlet where the cooling air duct is connected to the external environment is closed, and the cooling air conditioner is used to supply the cooling air into the cooling air duct; in winter application scenarios, the cooling air conditioner is turned off, the wind shield at the air inlet is opened, and cold air from the external environment is introduced into the cooling air duct to supply the cooling air.

[0023] Additional aspects and advantages of the embodiments of the present disclosure will be given in part in the description below and in part will become apparent from the description below or will be learned through practice of the embodiments of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the embodiments of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0025] FIG1 is a schematic diagram of an air duct structure of a safety protection structure of a station-type energy storage power station according to an embodiment of the present disclosure;

[0026] FIG2 is a schematic diagram of a baffle structure of a safety protection structure of a station-type energy storage power station according to an embodiment of the present disclosure;

[0027] FIG3 is a schematic diagram of the structure of a fire extinguishing system of a safety protection structure of a station-type energy storage power station according to an embodiment of the present disclosure.

[0028] Explanation of the accompanying symbols: 1. Battery cluster; 2. Cooling air duct; 3. Cold air outlet; 4. Auxiliary air duct; 5. Exhaust fan; 6. Waste heat utilization plate heat exchange device; 7. Aerosol fire extinguishing device; 8. Foam fire extinguishing equipment; 9. Foam fire main line; 10. Foam fire sprinkler; 11. Battery cluster base; 12. Liquid collection area; 13. Baffle; 14. Ventilation port. DETAILED DESCRIPTION

[0029] The following describes in detail embodiments of the present disclosure, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0030] An embodiment of the present disclosure provides a safety protection structure for a station-type energy storage power station, which is described in detail below with reference to FIG. 1 to FIG. 3 .

[0031] A safety protection structure of a station-type energy storage power station includes a station building with a battery room. Multiple battery clusters 1 are arranged in the battery room, and the multiple battery clusters 1 are arranged in an array. Cooling air ducts 2 are arranged on the backs of the corresponding battery clusters 1 in the station building. The cooling air ducts 2 are provided with cold air outlets 3 corresponding to each row of battery clusters 1. Auxiliary air ducts 4 connected to the cold air outlets 3 are provided corresponding to each row of battery clusters 1. The auxiliary air ducts 4 are semi-enclosed and include air ducts arranged perpendicular to the cold air outlets. An air exchange outlet is provided at one end of the auxiliary air duct 4 away from the cooling air duct 2. A waste heat utilization plate heat exchange device 6 is provided on the side of the inner wall of the battery room away from the cooling outlet. A fire extinguishing system is provided in the station building, and the fire extinguishing system includes multiple groups of aerosol fire extinguishing devices 7 arranged on the inner wall of the station building and a foam fire extinguishing system arranged above the battery cluster 1. A sensor group is provided on the top wall of the battery room, and the sensor group and the fire extinguishing system are electrically connected to the same controller. The cooling air duct 2 is connected to the external environment of the station building and is provided with an air inlet, and the cooling air duct 2 is connected to a cooling air conditioner, and a wind shield is movably provided at the position of the air inlet.

[0032] The disclosed embodiments optimize the air duct design to centrally manage the thermal performance of multiple battery clusters 1 within the battery compartment. This utilizes a cooling solution that combines natural air cooling with air-cooled units, and a heat preservation solution that heats the indoor environment through centralized heating pipes. This significantly reduces energy storage and heat dissipation power consumption, and allows the fire extinguishing system to effectively extinguish thermal runaway fires in the event of a battery cluster 1 fire. When natural air cooling is used for cooling air in winter, the cooling air conditioner is turned off, and the windshield is opened to allow outside air to enter the cooling duct 2. In some embodiments, a fan is provided at the air inlet to accelerate the flow of outside cold air into the cooling duct 2.

[0033] The commonly used liquid cooling thermal management method is not the best choice for station-type energy storage power stations. The battery density is high, and the liquid cooling equipment and pipeline laying are complex, costly, and have large losses. Station-type power stations are more suitable for centralized thermal management solutions. The disclosed embodiment combines the characteristics of station-type energy storage power stations, such as being suitable for construction in the cold northern climate and close to thermal power resources, to invent an intensive and efficient thermal management solution for heat dissipation / insulation of station-type energy storage. In the summer heat dissipation scenario, a solution combining outdoor centralized air-cooling units and natural air cooling modules is adopted according to local conditions to significantly reduce the heat dissipation power consumption of energy storage; in the winter insulation scenario, the waste heat of the thermal power plant is further coupled with the energy storage system, and the waste heat of the power plant is used through the centralized heating pipeline network to heat the battery system and the indoor environment, ensuring that the battery is in a normal temperature environment throughout the day. Compared with the traditional prefabricated cabin thermal management solution, the intensive thermal management solution for station-type energy storage almost completely saves the winter insulation power consumption, and the summer heat dissipation power consumption is also reduced by about 40%.

[0034] In some embodiments, an exhaust fan 5 is provided at the air exchange port. The exhaust fan 5 can further guide the cooling air, facilitating the cooling air to flow from the cooling port to the exhaust fan 5, thereby cooling the battery cluster 1 located in the cooling air flow path.

[0035] In some embodiments, an ambient air supply vent is positioned midway between adjacent rows of battery clusters 1 on the auxiliary air duct 4. In other embodiments, the ambient air supply vent is positioned on the top wall of the auxiliary air duct, directly above the battery cluster 1. This configuration provides multiple cooling vents for the battery cluster 1. These vents, combined with the cooling air from the exhaust fan 5, provide sufficient and rapid airflow to dissipate heat from the battery cluster 1, ensuring temperature uniformity across the front and rear rows of cells in the plug-in compartment.

[0036] In some embodiments, baffles 13 are provided on the outer sides of each of the four sides of the battery cluster 1 perpendicular to the ground, and each baffle 13 is provided with multiple vents 14. Each vent 14 is provided one-to-one with a single battery in the battery cluster 1, and a removable sealing plate is provided at each vent 14 to completely block the vent 14. To illustrate the position of the vent 14 in detail, the sealing plate structure is not shown in the figure. The sealing plate is normally open to allow cooling air to pass through the battery cluster 1. When the battery cluster 1 is extinguished, the sealing plate moves to block the vent 14. The baffle 13 has two functions. First, it serves as an air duct baffle 13 to ensure uniform heat dissipation of the battery cells, allowing cooling air to pass through the vent 14 for targeted cooling of each battery cell. Second, it serves as a fire isolation unit to prevent heat spread in the event of battery thermal runaway. When the foam firefighting is activated, the baffle 13 is used to collect foam to enhance the fire extinguishing and cooling effect. The battery cluster 1 has baffles 13 on all four sides. The baffles 13 are higher than the battery cluster 1 and have uniform openings. Under normal circumstances, the baffles 13 are always open to ensure uniform heat exchange. In case of fire, the baffles 13 are closed to form a semi-enclosed space to achieve full immersion of foam.

[0037] In some embodiments, the sealed plates at the vents 14 are hinged to the upper or lower edge of the vents 14, and the same end of the sealed plates on a single baffle 13 is rotatably set to the same transmission connecting rod. One end of the transmission connecting rod is connected to an electric eccentric device for unified management of the sealed plates on the entire baffle 13, and the electric eccentric device on each baffle 13 is electrically connected to the controller.

[0038] In some embodiments, the sensor group includes a temperature detector, a smoke detector, and a combustible gas detector. Multiple sensor groups are provided on the top wall of the battery compartment, each with its own detection range for detecting temperature, smoke, and combustible gas within the detection range. When the three types of detection indicators detected by a sensor group within its detection range reach a safety threshold, the sensor group sends a fire signal to the controller. Upon receiving the fire signal, the controller sends an action signal to the aerosol fire extinguishing device 7 or foam fire extinguishing system closest to the sensor group that sent the fire signal, thereby achieving regional, targeted fire extinguishing.

[0039] In some embodiments, the aerosol fire extinguishing device 7 is suspended on the inner wall of the battery compartment corresponding to a position close to the battery cluster 1, and the aerosol fire extinguishing device 7 is electrically connected to the controller. Multiple aerosol fire extinguishing devices 7 are provided corresponding to multiple groups of battery clusters 1. The coverage range of each aerosol fire extinguishing device 7 is uniform and can be overlapped. The distance between adjacent aerosol fire extinguishing devices 7 is adjusted according to the coverage range. When an electrical fire or other type of fire occurs in the battery compartment, when the three types of detection values ​​of any sensor group reach the threshold, the aerosol fire extinguishing device 7 adjacent to the sensor group is activated to extinguish the fire. If the fire is still not extinguished after the aerosol is activated, the foam fire extinguishing system is manually activated to extinguish the fire.

[0040] In some embodiments, the foam fire extinguishing system includes a foam fire main line 9 arranged on the top of the battery room, a foam fire extinguishing device 8 is provided on one side wall of the battery room, and a foam fire sprinkler 10 is provided on the foam fire main line 9 corresponding to each battery cluster 1 position. A solenoid valve is provided at each fire sprinkler position, each solenoid valve is electrically connected to the controller, and the foam fire extinguishing device 8 is electrically connected to the controller. When battery thermal runaway occurs, the voltage and temperature collected by the battery management system in the battery pack of battery cluster 1 exceed the threshold value, the battery status is judged to be abnormal, and an early warning information is sent to the battery management system control unit to cut off the power supply of the entire battery cluster. When the sensor group on the top of the battery compartment detects that all three types of detection values ​​have reached the threshold value, it is judged that battery thermal runaway has occurred, an alarm information is sent, and the sealing plate on the side baffle 13 of battery cluster 1 is closed. The battery cluster 1 is surrounded by the baffle 13 in a semi-enclosed state. The controller controls the foam fire extinguishing system to operate and opens the solenoid valve of the fire sprinkler above the battery cluster 1 where thermal runaway has occurred. The foam fire extinguishing system sprays foam through the fire sprinkler to the battery cluster 1 where thermal runaway has occurred, and performs flooding fire extinguishing on the battery cluster 1 where thermal runaway has occurred.

[0041] In some embodiments, the foam fire extinguishing system uses compressed nitrogen foam for fire extinguishing, wherein the gas-liquid ratio is 10:1. After long-term immersion, a small amount of water will remain in the foam liquid, and the water needs to be quickly drained to avoid secondary electrical accidents. Therefore, a liquid collection base is provided under the battery cluster 1, and a floor drain is provided through the bottom of the liquid collection base. An underground liquid collection area 12 is provided under the corresponding battery room of the station building. The space of the liquid collection area 12 is set to 2-3m3, and the floor drain is connected to the underground liquid collection area 12. This part of water flows into the underground liquid collection area 12 through the floor drain of the base of the battery cluster 1, and will not enter the cable trench, thereby preventing the occurrence of secondary electrical accidents. The foam is clean and pollution-free, with an electrical conductivity of 1 to 3μS / cm, good insulation, and will not affect battery performance.

[0042] The disclosed embodiment also provides a safety protection method for a station-type energy storage power station, including a temperature control method and a fire protection method;

[0043] Temperature control method: When cooling is required, cooling air is supplied to the cooling air duct 2. The cooling air enters the auxiliary air duct 4 from the cold air outlet 3 along the cooling air duct 2 to cool the battery cluster 1 in the auxiliary air duct 4. After cooling, the cooling air is discharged from the air exchange outlet. After cooling the battery cluster 1, the cooling air enters the battery room and enters the cooling air conditioner through natural circulation. When heat preservation is required, the waste heat utilization plate heat exchange device 6 coupled with the waste heat of the power plant is used to heat the waste heat utilization plate heat exchange device 6 using the centralized heating pipe network to control the battery room temperature at 25-30°C.

[0044] Fire-fighting method: multiple sensor groups independently detect the temperature, combustible gas, and smoke in the battery room. When an electrical fire or other type of fire occurs in the battery compartment, when the three types of detection values ​​of any sensor group reach the threshold, the aerosol fire extinguishing device 7 adjacent to the sensor group is activated to extinguish the fire; if the fire is still not extinguished after the aerosol is activated, the foam fire extinguishing system is manually activated to extinguish the fire; when battery thermal runaway occurs, the battery management system of the battery pack in the battery cluster 1 cuts off the power supply of the entire battery cluster 1, and when the sensor group on the top of the battery compartment detects that the three types of detection values ​​have reached the threshold, it is determined that battery thermal runaway has occurred, and the sealing panel is closed, and the foam fire extinguishing system performs flooding firefighting on the battery cluster 1 where battery thermal runaway has occurred.

[0045] In some embodiments, the temperature control method needs to replace the cooling air source according to the external seasonal environment when cooling. In summer application scenarios, the wind shield at the air inlet connecting the cooling air duct 2 with the external environment is closed, and a cooling air conditioner is used to supply cooling air into the cooling air duct 2.

[0046] In other embodiments, in winter application scenarios, the cooling air conditioner is turned off, the wind shield at the air inlet is opened, and cold air from the external environment is introduced into the cooling air duct 2 to supply cooling air.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are mutually inconsistent.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0049] Although the embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

[0050] All embodiments of the present disclosure may be implemented individually or in combination with other embodiments, and are all considered to be within the scope of protection claimed by the present disclosure.

Claims

1. A safety protection structure for a station-type energy storage power station, characterized in that: The invention comprises a station building with a battery room, wherein a plurality of battery clusters are arranged in an array, a cooling air duct is arranged in the station building corresponding to the back of the battery cluster, the cooling air duct is provided with a cold air outlet corresponding to each row of battery clusters, an auxiliary air duct connected with the cold air outlet is provided corresponding to each row of battery clusters, an air exchange outlet is provided at one end of the auxiliary air duct away from the cooling air duct, a waste heat utilization plate heat exchange device is provided on the side of the inner wall of the battery room away from the cooling outlet, a fire extinguishing system is provided in the station building, the fire extinguishing system comprises a plurality of aerosol fire extinguishing devices arranged on the inner wall of the station building and a foam fire extinguishing system arranged above the battery cluster, a sensor group is provided on the top wall of the battery room, and the sensor group and the fire extinguishing system are electrically connected to the same controller.

2. A safety protection structure for a station-type energy storage power station according to claim 1, characterized in that: The cooling air duct is connected to the external environment of the station building and is provided with an air inlet, and the cooling air duct is connected to a cooling air conditioner, and a wind shield is movably provided at the position of the air inlet.

3. A safety protection structure for a station-type energy storage power station according to claim 1 or 2, characterized in that: An exhaust fan is provided at the air exchange port.

4. A safety protection structure for a station-type energy storage power station according to any one of claims 1 to 3, characterized in that: An ambient air supply port is provided on the auxiliary air duct at a middle position of the battery clusters corresponding to adjacent rows.

5. A safety protection structure for a station-type energy storage power station according to any one of claims 1 to 4, characterized in that: Baffles are provided on the outer sides of the four sides of the battery cluster perpendicular to the ground, and each baffle is provided with multiple vents, each vent is provided one-to-one corresponding to a single battery in the battery cluster, and a sealing plate that can completely block the vent is movably provided at each vent. The sealing plate is in a normally open state to allow cooling air to pass through the battery cluster. When the battery cluster is extinguished, the sealing plate moves to block the vent.

6. A safety protection structure for a station-type energy storage power station according to any one of claims 1 to 5, characterized in that: The sensor group includes a temperature detector, a smoke detector and a combustible gas detector.

7. A safety protection structure for a station-type energy storage power station according to any one of claims 1 to 6, characterized in that: The aerosol fire extinguishing device is suspended on the inner wall of the battery chamber at a position corresponding to a position close to the battery cluster, and the aerosol fire extinguishing device is electrically connected to the controller.

8. The safety protection structure of a station-type energy storage power station according to claim 7, characterized in that: The foam fire extinguishing system includes a foam fire main line arranged on the top of the battery chamber, a foam fire extinguishing device is provided on one side wall of the battery chamber, a foam fire sprinkler is provided on the foam fire main line corresponding to each battery cluster position, and the foam fire extinguishing device is electrically connected to the controller.

9. The safety protection structure of a station-type energy storage power station according to claim 8, characterized in that: A liquid collection base is provided below the battery cluster, a floor drain is provided through the bottom of the liquid collection base, an underground liquid collection area is provided below the corresponding battery room of the station building, and the floor drain is connected to the underground liquid collection area.

10. A safety protection method for a station-type energy storage power station, characterized in that: Including temperature control methods and fire fighting methods, The temperature control method includes supplying cooling air into the cooling air duct based on the need for temperature reduction, the cooling air flowing along the cooling air duct from the cold air outlet into the auxiliary air duct to cool the battery cluster in the auxiliary air duct, the cooling air after cooling is discharged from the air exchange outlet, the cooling air entering the battery room after cooling the battery cluster, and then naturally circulating into the cooling air conditioner; Based on the need for heat preservation, a waste heat utilization plate heat exchange device coupled with the waste heat of the power plant is used to heat the waste heat utilization plate heat exchange device using the centralized heating network to control the temperature of the battery room at 25-30°C; The firefighting method includes: multiple sensor groups independently detecting the temperature, combustible gas, and smoke in the battery compartment; if an electrical fire or other fire occurs in the battery compartment, and if the three types of detection values ​​of any sensor group reach a threshold, activating an aerosol fire extinguishing device adjacent to the sensor group to extinguish the fire; if the fire is still not extinguished after the aerosol is activated, manually activating a foam fire extinguishing system to extinguish the fire; Based on the occurrence of battery thermal runaway, the battery management system of the battery pack in the battery cluster cuts off the power supply of the entire battery cluster, and the sensor group on the top of the battery compartment detects that all three types of detection values ​​have reached the threshold, judging that battery thermal runaway has occurred, and the sealing panel is closed. The foam fire extinguishing system performs flooding firefighting on the battery cluster where battery thermal runaway has occurred.

11. A safety protection method for a station-type energy storage power station according to claim 10, characterized in that: The temperature control method needs to replace the cooling air source according to the external seasonal environment when cooling. In the summer application scenario, the wind shield at the air inlet where the cooling air duct is connected to the external environment is closed, and the cooling air conditioner is used to supply the cooling air into the cooling air duct; in the winter application scenario, the cooling air conditioner is turned off, the wind shield at the air inlet is opened, and cold air from the external environment is introduced into the cooling air duct to supply the cooling air.

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