Fire extinguishing system and method of energy storage power station

Abstract

The invention discloses a fire fighting system and method for an energy storage power station, and belongs to the technical field of fire fighting of energy storage power stations. Wherein the first fire-fighting devices are arranged on all energy storage layers in the energy storage cabinet; the second fire-fighting device comprises a second fire-fighting device body and a second fire-fighting controller; the second fire-fighting device body is arranged on the outer side of the energy storage cabinet and is connected with the energy storage cabinet through at least one discharge port; and the second fire-fighting controller determines a fire-fighting control strategy and generates a fire-fighting control instruction by monitoring the audio information, identifying a target audio and analyzing the target audio, and controls the second fire-fighting device body to execute a fire-fighting action through the fire-fighting control instruction. Through cooperation of monitoring and control, accurate judgment of the position of a fire source can be achieved, fire-fighting measures can be adjusted in time according to dynamic changes of fire behaviors, the probability of large-scale fire disasters is reduced, and safe operation of an energy storage power station is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of energy storage power station fire fighting, and particularly relates to a fire fighting system and method for energy storage power station. BACKGROUND

[0002] At present, with the gradual transformation of global energy structure, energy storage power station as a large-scale energy storage carrier plays a key role in the fields of power grid peak shaving and renewable energy consumption. However, the fire accidents caused by thermal runaway risk of energy storage system (especially lithium battery) occur frequently, and thermal runaway is extremely easy to cause chain reaction, which is much more destructive than ordinary building fire. In addition, compared with ordinary building fire, energy storage power station fire will produce a large amount of toxic gas or flammable gas. Therefore, the energy storage power station fire has the problems of short time window, strong destructive and complex gas diffusion path.

[0003] In the existing related technology, in order to quickly respond to the fire hazard caused by thermal runaway of energy storage equipment, each energy storage equipment is equipped with an independent fire fighting equipment. When receiving the fire fighting signal sent by the controller, the fire fighting equipment extinguishes the fire at the position where the fire occurs. The fire fighting signal sent by the controller is determined according to the data transmitted by the sensor. However, the current fire fighting method of energy storage equipment is relatively over-dependent on the performance of sensor and network. In other words, if the sensor fails or the network performance is poor, the real-time performance of fire fighting monitoring and response cannot be guaranteed, which may cause greater fire risk. SUMMARY

[0004] The application provides a fire fighting system and method for energy storage power station, which aims to solve the problem that the current fire fighting method of energy storage equipment is relatively over-dependent on the performance of sensor and network. If the sensor fails or the network performance is poor, the real-time performance of fire fighting monitoring and response cannot be guaranteed, which may cause greater fire risk.

[0005] To achieve the above purpose, the application adopts the following technical solutions: The application provides a fire fighting system for energy storage power station, which comprises a first fire fighting device and a second fire fighting device. The first fire fighting device is arranged in each energy storage layer in the energy storage cabinet. The second fire fighting device comprises a second fire fighting device body and a second fire fighting controller. The second fire fighting device body is arranged outside the energy storage cabinet, and the second fire fighting device body is connected with the energy storage cabinet through at least one discharge port. The second fire fighting controller determines the fire fighting control strategy and generates the fire fighting control instruction by listening to the audio information, identifying the target audio and analyzing the target audio, and controls the second fire fighting device body to perform the fire fighting action through the fire fighting control instruction.

[0006] In some embodiments, the first fire-fighting device comprises an SMA spring, one end of the SMA spring is arranged on the inner surface of the energy storage cabinet, the other end of the SMA spring is connected with a guide device, the guide device is arranged with a trigger rod, one end of the trigger rod is connected with the SMA spring, the other end of the trigger rod is connected with a hook-shaped piercing head extending out of the guide device; the hook-shaped piercing head is correspondingly arranged with a fire extinguishing agent storage tank sealing component, and the SMA spring can be retracted to drive the trigger rod and the hook-shaped piercing head to move.

[0007] Further, the SMA spring is made of titanium-nickel alloy, and the phase transition temperature of the SMA spring is set according to the type of the fire extinguishing agent storage tank sealing component, so that when the target temperature is reached, the SMA spring is automatically retracted to drive the hook-shaped piercing head to pierce the fire extinguishing agent storage tank sealing component.

[0008] Further, the guide device is in a cylindrical structure, and the inner wall surface roughness of the guide device is not greater than 0.8 μm. .

[0009] Further, the fire extinguishing agent storage tank sealing component adopts a composite layer structure of fluorine rubber and aluminum foil, and the burst pressure of the fire extinguishing agent storage tank sealing component is configured according to the elastic force of the SMA spring.

[0010] In some embodiments, the second fire-fighting controller comprises an audio monitoring module, an audio recognition module, a strategy generation module, and a control execution module, wherein: The audio monitoring module is used to collect audio information in the energy storage cabinet; the audio recognition module is used to identify whether the target audio is contained in the audio information; the strategy generation module is used to determine the fire-fighting control strategy according to the target audio and generate the fire-fighting control instruction; and the control execution module is used to control the second fire-fighting device to execute the fire-fighting action.

[0011] Further, the audio recognition module comprises a band-pass filter and a programmable gain amplifier, so as to preprocess the audio signal.

[0012] In some embodiments, the first fire-fighting device further comprises a gas pressure sensor, a first fire-fighting controller, and an audio generator, wherein: The gas pressure sensor is used to detect the gas pressure change in the storage tank, the first fire-fighting controller is used to control the audio generator to emit the target audio when the gas pressure change rate exceeds a preset threshold, and the audio generator is used to emit the target audio representing the position of the first fire-fighting device.

[0013] Further, the target audio is an encoded audio signal, and the encoding format comprises a device type, a region code, a dimension code, and a check bit.

[0014] The application also provides a fire-fighting method of an energy storage power station, which is based on a fire-fighting system of the energy storage power station, and comprises the following steps: S1. Monitor audio information and perform audio recognition. S2. Determine whether the target audio has been detected. If the target audio has been detected, execute S3. If the target audio has not been detected, repeat S1-S2. S3. Analyze the target audio to obtain the first fire-fighting strategy; The target audio is emitted by the first fire-fighting device. At least one first fire-fighting device is installed in each energy storage layer of each energy storage cabinet. The first fire-fighting device automatically releases the target substance at the target temperature and generates the target audio during the release of the target substance. The target substance is a coolant and / or a fire extinguishing agent. S4, according to the first fire-fighting strategy, activate the fire-fighting facilities to complete the fire-fighting of the energy storage cabinet.

[0015] Compared with the prior art, the fire protection system and method for an energy storage power station of the present invention have the following beneficial effects: This invention discloses a fire suppression system for an energy storage power station. A second fire suppression controller monitors the target audio generated when the first fire suppression device releases the target substance. Fire situation assessment is based on audio characteristics, avoiding delays in sensor signal acquisition, transmission, and processing, thus shortening response time. This ensures real-time fire suppression actions, especially in cases of sensor malfunction or poor network performance. The first fire suppression device automatically releases coolant or extinguishing agent when the temperature rises abnormally, providing initial suppression. The second fire suppression device dynamically adjusts its fire suppression strategy based on audio analysis results. The second fire suppression controller can accurately locate the fire source within the energy storage cabinet and control the nearest outlet for directional spraying, avoiding resource waste or secondary damage. The system can also infer the direction and rate of fire migration by analyzing the time series and location changes of multiple audio sources, enabling proactive fire suppression and improving overall fire suppression efficiency. The first fire suppression device releases coolant and generates target audio when the temperature reaches a low threshold, providing an early warning signal in the early stages of a fire. The second fire suppression controller identifies the audio and initiates cooling measures in advance, preventing thermal runaway chain reactions, reducing the probability of large-scale fires, and ensuring the safe operation of the energy storage power station.

[0016] On the other hand, the fire-fighting method of the energy storage power station of the present invention monitors the fire situation only through audio analysis, avoiding the problems of easy failure and great interference of traditional sensors. It does not rely on devices such as temperature sensors that may have delays, resulting in a shorter response time. In the event of sensor failure or poor network performance, it ensures the real-time fire-fighting of energy storage equipment, reduces system complexity and maintenance costs, and can detect potential hazards in advance through the audio emitted by the first fire-fighting device before a fire occurs. By utilizing the first fire-fighting device and the second fire-fighting device, a two-layer prevention mechanism can be formed, which can effectively avoid and eliminate potential hazards. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the invention and constitute a part of this invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Figure 1 This is a schematic diagram of the installation layout of the first fire-fighting device in a fire-fighting system of an energy storage power station according to the present invention; Figure 2 This is a schematic flowchart of a fire-fighting method for an energy storage power station according to the present invention; Figure 3 This is a schematic diagram of the fire protection system architecture of an energy storage power station according to the present invention.

[0019] Among them, 1. The first fire-fighting device; 101. SMA spring; 102. Guide device; 103. Trigger rod; 104. Hooked barb; 105. Sealing component of fire extinguishing agent storage tank; 2. Second fire-fighting device; 201. The body of the second fire-fighting device; 202. The second fire-fighting controller; 3. Energy storage cabinet. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0023] It should be noted that the apparatus and methods disclosed in the embodiments herein can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments herein. In this regard, each block in a flowchart or block diagram may represent a module, program, or part of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system to perform the specified function or action, or can be implemented using a combination of dedicated hardware and computer instructions.

[0024] Furthermore, the functional modules in the various embodiments described herein can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part. Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. After reading the above content, various modifications and substitutions of the present invention will be obvious to those skilled in the art. Therefore, the scope of protection of the present invention should be defined by the appended claims.

[0025] like Figure 3 As shown, the present invention provides a fire protection system for an energy storage power station, comprising a first fire-fighting device 1 and a second fire-fighting device 2; wherein: The first fire-fighting device 1 is installed in each energy storage layer inside the energy storage cabinet 3; The second fire-fighting device 2 includes a second fire-fighting device body 201 and a second fire controller 202; the second fire-fighting device body 201 is located on the outside of the energy storage cabinet 3, and the second fire-fighting device body 201 is connected to the energy storage cabinet 3 through at least one outlet. The second fire controller 202 determines the fire control strategy and generates fire control commands by listening to audio information, identifying target audio, and analyzing target audio. It then controls the second fire-fighting device 201 to perform fire-fighting actions through the fire control commands.

[0026] This invention utilizes a first fire-fighting device 1 deployed in each energy storage layer of the energy storage cabinet, a second fire-fighting device body 201 located outside the energy storage 3, and a second fire controller 202. The second fire controller 202 monitors audio information, identifies target audio, and analyzes the target audio to formulate fire-fighting strategies and control the action of the second fire-fighting device body 201. This achieves a shift from passive response to active monitoring, improving system reliability and real-time performance. Through a dual safety guarantee combining local autonomy and central intelligence, fire-fighting efficiency is optimized, system complexity and total lifecycle costs are reduced, and deployment and maintenance are facilitated. This invention, through the coordinated operation of mechanical autonomy and central intelligence, effectively improves the reliability, real-time performance, and economy of energy storage fire-fighting systems, providing technical support for the safe and efficient operation of energy storage power stations.

[0027] like Figure 1 As shown, in the fire protection system of the energy storage power station of the present invention, the first fire protection device 1 includes: an SMA spring 101, one end of which is disposed on the inner surface of the energy storage cabinet 3, and the other end is connected to a guide device 102. When the target temperature is reached, the SMA spring 101 automatically contracts. One end of the guide device 102 is fixedly disposed on the inner surface of the energy storage cabinet 3, and the other end is suspended. A trigger rod 103 is disposed inside the guide device 102. One end of the trigger rod 103 is connected to the SMA spring 101, and the other end is connected to a hook protruding from the guide device 102. The hook protruding from the guide device 102 is correspondingly disposed with a sealing component 105 of the fire extinguishing agent storage tank. The bending radius of the hook 104 is greater than the radius of the guide device 102. When the SMA spring 101 is contracted, the SMA spring 101 pulls the trigger rod 103 to move within the guide device 102, so that the trigger rod 103 and the hook 104, under the constraint of the guide device 102, puncture the sealing component 105 of the fire extinguishing agent storage tank. The sealing component 105 of the fire extinguishing agent storage tank is adjacent to the position of the hook 104 when the target temperature has not been reached (such as at room temperature).

[0028] like Figure 2 As shown, the present invention also provides a fire-fighting method for an energy storage power station, applied to a second fire controller 202. The second fire controller 202 is used to control a second fire-fighting device 2. The body 201 of the second fire-fighting device is disposed on the outside of the energy storage cabinet 3 and connected to the energy storage cabinet 3 by an outlet. The method includes: S1. Monitor audio information and perform audio recognition. S2. Determine whether the target audio has been detected. If the target audio has been detected, execute S3. If the target audio has not been detected, repeat S1-S2. S3. Analyze the target audio to obtain the first fire-fighting strategy; The target audio is emitted by the first fire-fighting device 1. At least one first fire-fighting device 1 is installed in each energy storage layer of each energy storage cabinet 3. The first fire-fighting device 1 automatically releases the target substance at the target temperature and generates the target audio during the release of the target substance. The target substance is a coolant and / or a fire extinguishing agent. S4, according to the first fire protection strategy, activate the fire protection facilities to complete the fire protection of energy storage cabinet 3.

[0029] In order to quickly eliminate fire hazards, when any battery in the energy storage cabinet 3 experiences a local temperature rise due to a short circuit or other reasons, and the temperature rises to 70°C, the coolant storage tank of the first fire-fighting device 1 automatically releases the target substance, which can be a coolant, such as fluorinated liquid. When the temperature rises to the ignition point and forms an open flame, causing the temperature to rise again to 120°C, the extinguishing agent storage tank of the first fire-fighting device 1 automatically releases the extinguishing agent, which can be nitrogen. This embodiment does not limit the extinguishing agent and coolant, and those skilled in the art can determine them as needed. However, it should be noted that the temperature at which the extinguishing agent is released is higher than the temperature at which the coolant is released.

[0030] In the fire protection system of the energy storage power station of the present invention, in the structure of the first fire protection device 1, the guide device 102 is made of brass sleeve, and the inner wall of the brass sleeve is precision ground, with a surface roughness of no more than [missing value]. One end of the guide device 102 is connected to the sealing component 105 of the extinguishing agent storage tank, and the other end is fitted around the trigger rod 103. The function of the guide device 102 is to constrain the movement direction of the trigger rod 103, ensuring that the trigger rod 103 can accurately align with the sealing component 105 of the extinguishing agent storage tank and perform the puncture operation during movement, while reducing the friction force when the trigger rod 103 moves, thus improving the reliability of triggering.

[0031] In some practical applications, the sealing component 105 of the fire extinguishing agent storage tank of the present invention can adopt a composite layer structure of fluororubber (FKM) and aluminum foil. Fluororubber has good high-temperature resistance and chemical corrosion resistance, which can ensure the sealing of the storage tank under normal conditions. The aluminum foil increases the strength of the sealing component, enabling it to withstand a certain pressure. The burst pressure of the sealing component 105 of the fire extinguishing agent storage tank can be designed to be 0.8 MPa. When the hook 104 of the trigger rod 103 punctures the sealing component 105 of the fire extinguishing agent storage tank, the target substance can be released rapidly.

[0032] In the fire protection system of the energy storage power station of this invention, the SMA spring 101 used on the coolant storage tank can be made of titanium-nickel (TiNi) alloy. For the coolant storage tank, the martensitic phase transformation initiation temperature (Ms) of the SMA spring 101 is designed to be 70°C; for the extinguishing agent storage tank, the austenitic phase transformation temperature (As) is designed to be 120°C. The material can be selected as needed. When the temperature of the energy storage cabinet 3 reaches the phase transformation temperature of the SMA spring 101 (e.g., 70°C), the SMA spring 101 contracts, and the hook 104 of the trigger rod 103 pierces the sealing component 105 of the extinguishing agent storage tank, releasing the fluorinated liquid cooling heat source. If the fire is not controlled, the temperature continues to rise to the phase transformation temperature of the SMA spring 101 (e.g., 120°C), and the SMA spring 101 contracts to trigger the release of the extinguishing agent, suppressing the flame.

[0033] In some embodiments, the method of monitoring audio information in this invention can be to uniformly deploy multiple pickup arrays, i.e., microphone arrays, inside each energy storage cabinet 3. Simultaneously, a bandpass filter can be built in to suppress ambient noise, and a programmable gain amplifier can be used to ensure that the signal received by the subsequent audio recognition module is always within the optimal level range. The method of audio recognition can be to extract spectral features from the audio information, match these spectral features with a pre-established feature template library, and if a match is successful, it is determined that a target signal has been detected. The feature template library stores the audio features of each individual target substance released, as well as the audio features of multiple target substances released in a mixture.

[0034] If a target signal is detected, it indicates a fire hazard in the current energy storage cabinet 3. Then, the spectrum of the target audio is analyzed, and the type of the target substance generating the target audio is determined based on spectrum matching, thus determining whether there is an open flame in the energy storage cabinet 3. If an open flame is present, the first fire-fighting strategy is to control the second fire-fighting device 201 to discharge extinguishing agent from all outlets; if no open flame is present, the first fire-fighting strategy is to control the second fire-fighting device 201 to discharge coolant from all outlets. If no target signal is detected, monitoring continues.

[0035] In order to target the discharge outlet, when the coolant and / or extinguishing agent are both gases, the first fire-fighting device 1 in the system of the present invention may also include the following device: A pressure sensor is used to determine the pressure changes within the first fire-fighting device 1; The first fire controller 202 is connected to the air pressure sensor and receives air pressure change signals. When the rate of air pressure change exceeds the target rate, it sends a control signal to the audio generator. An audio generator is connected to the first fire controller 202 and emits a target audio in response to the control signal of the first fire controller 202. The target audio is a preset audio that is used to characterize the location of the first fire-fighting device 1.

[0036] Pressure sensors are installed in both the coolant and extinguishing agent storage tanks of the first fire-fighting device. These sensors detect pressure changes within the tanks, with a target rate of 0.5 bar / s. A rapid decrease in pressure indicates the tank has been punctured, and coolant or extinguishing agent is being discharged. At this point, the internal audio generator emits a specific audio signal. This audio signal is coded and carries location information through its encoding. Specifically, the encoding rules are: equipment type, area code, dimension code, and check digit, such as F-34-03-01, where equipment type: F = fire-fighting device, area code: 34 (representing the third row, fourth column cabinet), dimension code: 03 (representing the third layer within the cabinet), and check digit: 01. Then, based on the encoding mapping table, high and low frequency combinations are used to determine the frequencies of different codes. After receiving the encoded frequencies, the second fire controller 202 decodes them sequentially according to timing characteristics to recover the encoded content and obtain the location information. Based on this location information, the optimal discharge outlet is determined.

[0037] In another embodiment, multiple exhaust outlets exist between the second fire-fighting device 2 and the energy storage cabinet 3 of the present invention. The target audio is analyzed to obtain a first fire-fighting strategy, including: The target audio is input into a pre-established offline audio recognition model to determine the location of the target audio in the energy storage cabinet and the corresponding emission intensity of the target substance. Based on the location of the target audio signal, determine at least one outlet of the second fire-fighting device 2; Based on the emission intensity of the target substance characterized by the target audio, determine the discharge rate of the extinguishing agent or coolant of the second fire-fighting device 2; The second fire-fighting device 2 is controlled to carry out fire-fighting treatment according to the discharge outlet and discharge rate.

[0038] Specifically, in a laboratory environment, scenarios involving the release of coolant and fire extinguishing agents at different locations and intensities within the energy storage cabinet 3 were simulated. Simultaneously, high-precision audio acquisition equipment was used, with microphones positioned at multiple locations within the cabinet to record audio at various locations: the release of a single coolant, the release of multiple coolants, the simultaneous release of multiple coolants and multiple fire extinguishing agents, and the simultaneous release of multiple coolants and one fire extinguishing agent. Position sensors recorded the release locations, and flow sensors recorded the emission intensities for the same scenarios. This data was used to train an audio recognition model, enabling it to distinguish between different emission methods to assess the urgency level within the energy storage cabinet. To improve the model's generalization ability, audio data under different environmental noise conditions was collected, simulating varying intensities of air conditioning fan noise and equipment operating noise. The collected audio data underwent preprocessing, including noise reduction and filtering, before extracting audio features such as Mel-frequency cepstral coefficients, spectral centroids, and bandwidth.

[0039] Choose a machine learning or deep learning model, such as a convolutional neural network, a recurrent neural network, or its variants, such as LSTM or GRU. Use the extracted audio features as input and the corresponding target substance emission location and emission intensity as output to train the model. Mean squared error can be used as the loss function, and stochastic gradient descent or its optimization algorithm, such as Adam or Adagrad, can be used to update the model parameters. During training, the coolant release location, fire extinguishing agent release location, and emission intensity corresponding to the audio features are used as training sample labels, and the extracted audio features are used as samples. Through training, the machine learning or deep learning model can learn the mapping relationship between samples and labels.

[0040] Once the target audio is detected, the same preprocessing and feature extraction operations as in the training phase are performed on the audio to obtain the audio features to be analyzed. The extracted features are then input into a pre-established offline audio recognition model. Based on the input audio features, the model outputs the three-dimensional position coordinates of the target audio in the energy storage tank 3, as well as the corresponding target material emission intensity.

[0041] In embodiments of the present invention, multiple outlets between the second fire-fighting device 2 and the energy storage cabinet 3 are numbered and marked in advance to establish an outlet location database. The coverage area and spray angle of each outlet are analyzed to determine which outlets are suitable for extinguishing or cooling fires at different locations. Based on the target audio location output by the model, the outlet closest to that location and whose coverage area can effectively act on that location can be found in the outlet location database.

[0042] Beforehand, a mapping relationship is established between the emission intensity of the target substance and the discharge rate of the extinguishing agent or coolant of the second fire-fighting device 2 through experiments or theoretical calculations. For example, a table of emission intensity and discharge rate can be obtained. It should be noted that different mapping relationships can be established for different types of target substances (such as coolants and extinguishing agents) due to their different characteristics. Based on the emission intensity of the target substance output by the model, a suitable discharge rate is found in the corresponding mapping relationship. According to the determined discharge outlet number and discharge rate, a corresponding control signal is generated and sent to the control system of the second fire-fighting device 2. The control system controls the valves of the corresponding discharge outlets to open or close according to the signals and adjusts the pump speed to achieve the required discharge rate.

[0043] The fire-fighting method for energy storage power stations of this invention can quickly locate the specific location of target audio signals in some practical operating conditions through an offline audio recognition model. For example, it can accurately locate the fire source in a certain floor or area within the energy storage cabinet 3, avoiding blind spraying of the fire-fighting system. Furthermore, combined with emission intensity analysis, the discharge rate of extinguishing agent / coolant can be dynamically adjusted. The larger the fire, the greater the spray volume, achieving on-demand fire suppression and reducing waste.

[0044] As an optional implementation method, the present invention analyzes the target audio to obtain a first fire-fighting strategy, specifically including: The location of the target audio source is determined based on the time difference between any arrival times at different pickup arrays. Based on the time series and sound source location of different target audios, determine the rate of change of the sound source location of the target audio; Based on the rate of change of the target audio source location, determine the direction and rate of fire migration; Based on the direction and rate of fire migration, control the second fire-fighting device outside the current energy storage cabinet and / or the second fire-fighting device outside the energy storage cabinet in the direction of fire migration to carry out fire-fighting treatment.

[0045] In the fire-fighting method of the energy storage power station of this invention, the location of the sound source is determined by analyzing the time difference of the target audio signal arriving at different pickup arrays, enabling accurate judgment of the fire source location. Compared with methods relying on temperature sensors or smoke detectors, this method is relatively unaffected by factors such as obstructions and changes in ambient temperature. It can accurately locate the fire source in the complex internal environment of the energy storage cabinet 3, providing crucial information for timely fire suppression. Simultaneously, continuously tracking the time sequence of different target audio signals and the location of the sound source allows for real-time monitoring of the fire's development. It can promptly detect whether the fire is spreading, its direction and speed of spread, providing real-time data support for fire-fighting decisions. This allows fire-fighting measures to be adjusted promptly according to the dynamic changes in the fire, demonstrating superior reliability and practical value.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Anyone skilled in the art can readily implement the present invention according to the description and above. Any modifications, alterations, or variations made based on the disclosed technical content are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A fire protection system for an energy storage power station, characterized in that, Includes a first fire-fighting device (1) and a second fire-fighting device (2); wherein: The first fire-fighting device (1) is installed in each energy storage layer inside the energy storage cabinet (3); The second fire-fighting device (2) includes a second fire-fighting device body (201) and a second fire controller (202); the second fire-fighting device body (201) is located on the outside of the energy storage cabinet (3), and the second fire-fighting device body (201) is connected to the energy storage cabinet (3) through at least one outlet; The second fire controller (202) determines the fire control strategy and generates fire control commands by listening to audio information, identifying target audio and analyzing target audio, and controls the second fire-fighting device body (201) to perform fire-fighting actions through the fire control commands.

2. The fire protection system of the energy storage power station according to claim 1, characterized in that, The first fire-fighting device (1) includes an SMA spring (101). One end of the SMA spring (101) is located on the inner surface of the energy storage cabinet (3), and the other end is connected to a guide device (102). A trigger rod (103) is arranged inside the guide device (102). One end of the trigger rod (103) is connected to the SMA spring (101), and the other end is connected to a hook protruding from the guide device (102) (104). The hook protruding from the guide device (102) is correspondingly equipped with a sealing component (105) for the fire extinguishing agent storage tank. The SMA spring (101) can retract to drive the trigger rod (103) and the hook protruding from the guide device (104) to move.

3. The fire protection system of the energy storage power station according to claim 2, characterized in that, The SMA spring (101) is made of titanium-nickel alloy. The phase change temperature of the SMA spring (101) is set according to the type of the fire extinguishing agent storage tank sealing component (105) so that when the target temperature is reached, the SMA spring (101) automatically contracts and can drive the hook piercing head (104) to pierce the fire extinguishing agent storage tank sealing component (105).

4. The fire protection system of the energy storage power station according to claim 2, characterized in that, The guide device (102) has a cylindrical structure, and the surface roughness of the inner wall of the guide device (102) is not greater than 100%. .

5. The fire protection system of the energy storage power station according to claim 2, characterized in that, The sealing component (105) of the fire extinguishing agent storage tank adopts a composite layer structure of fluororubber and aluminum foil, and the burst pressure of the sealing component (105) of the fire extinguishing agent storage tank is configured according to the elastic force of the SMA spring (101).

6. The fire protection system of the energy storage power station according to claim 1, characterized in that, The second fire controller (202) includes an audio monitoring module, an audio recognition module, a strategy generation module, and a control execution module, wherein: The audio monitoring module is used to collect audio information in the energy storage cabinet; the audio recognition module is used to identify whether the audio information contains the target audio; the strategy generation module is used to determine the fire control strategy and generate fire control instructions based on the target audio; and the control execution module is used to control the second fire-fighting device (201) to perform fire-fighting actions.

7. The fire protection system of the energy storage power station according to claim 6, characterized in that, The audio recognition module includes a bandpass filter and a programmable gain amplifier for preprocessing audio signals.

8. The fire protection system of the energy storage power station according to claim 1, characterized in that, The first fire-fighting device (1) further includes a pressure sensor, a first fire controller, and an audio generator, wherein: The air pressure sensor is used to detect changes in air pressure inside the storage tank. The first fire controller is used to control the audio generator to emit a target audio when the rate of change in air pressure exceeds a preset threshold. The audio generator is used to emit a target audio that represents the location of the first fire-fighting device.

9. The fire protection system of the energy storage power station according to claim 8, characterized in that, The target audio is an encoded audio signal, and the encoding format includes device type, region encoding, dimension encoding, and check bit.

10. A fire-fighting method for an energy storage power station, characterized in that, The fire-fighting method is based on the fire-fighting system of the energy storage power station according to any one of claims 1-9, and the fire-fighting method includes the following steps: S1. Monitor audio information and perform audio recognition. S2. Determine whether the target audio has been detected. If the target audio has been detected, execute S3. If the target audio has not been detected, repeat S1-S2. S3. Analyze the target audio to obtain the first fire-fighting strategy; Among them, the target audio is emitted by the first fire-fighting device (1). The first fire-fighting device (1) is installed in each energy storage layer of each energy storage cabinet (3). The first fire-fighting device (1) automatically releases the target substance at the target temperature and generates the target audio during the release of the target substance. The target substance is coolant and / or extinguishing agent. S4. According to the first fire protection strategy, activate the fire protection facilities and complete the fire protection of the energy storage cabinet (3).

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