Centralized mistaken-irrigation-prevention automatic water injection fire extinguishing system and method for energy storage power station

Abstract

The invention belongs to the technical field of fire extinguishing of energy storage power stations, and provides a centralized mistaken-filling-prevention automatic water injection fire extinguishing system and method for an energy storage power station. The system comprises a water injection fire-fighting master control unit and a plurality of distributed sub prevention and control units, the distributed sub prevention and control units are in one-to-one correspondence with the energy storage power stations; the water injection fire-fighting master control unit comprises a master controller, a master water tank and a water injection pump; the water injection pump is connected with the master controller; each distributed sub prevention and control unit comprises a sub controller, a sub water tank, a sensing module and an execution module; the main water tank is communicated with each sub water tank; the master controller is communicated with each sub-controller; the sensing module is used for sensing fire information of the corresponding energy storage power station and transmitting the fire information to the sub-controller; the sub-controllers are used for controlling the corresponding execution modules to execute matched instructions according to transmitted fire information of the energy storage power station and controlling the working state of the water injection pump in linkage with the master controller.

Description

Technical Field

[0001] The present invention belongs to the technical field of fire extinguishing in energy storage power stations, and in particular relates to a centralized, mistake-proof automatic water injection fire extinguishing system and method for energy storage power stations. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Electrochemical energy storage power stations, especially lithium-ion battery energy storage systems, have been widely used in renewable energy storage, grid peak regulation, electric vehicle charging stations and other fields due to their high energy density, long life and low self-discharge rate. However, electrochemical energy storage power stations also have certain fire risks, because problems such as battery thermal runaway or short circuit may cause fires. Therefore, safe and efficient fire protection technology is essential to ensure the safe operation of electrochemical energy storage power stations.

[0004] The current fire-fighting methods of electrochemical energy storage power stations include gas fire-extinguishing systems, dry powder fire-extinguishing systems and liquid fire-extinguishing systems. Among them, the gas fire-extinguishing system has environmental impacts (such as greenhouse gas emissions) and high costs; the dry powder fire-extinguishing system may cause physical damage to battery components and has low fire-extinguishing efficiency; the liquid fire-extinguishing system mainly uses foam fire-extinguishing agents to extinguish fires. This method is simple and effective, but because the foam may cause battery short circuits or thermal runaway, it is not suitable for high current or high temperature environments.

[0005] In order to solve the above problems, a water injection fire extinguishing system is usually used for electrochemical energy storage power stations. The commonly used water injection scheme in the existing water injection fire extinguishing system is to determine whether the operation and maintenance or fire protection professionals should connect the pipeline for water injection by observing the fire conditions outside the energy storage prefabricated cabin, but it has the following problems: (1) Electrochemical energy storage power stations are usually unattended, and the thermal runaway process of electrochemical pure energy storage power stations develops extremely quickly. When the early accidents are missed, the fire extinguishing effect of the later fire protection measures is relatively limited; (2) The traditional water injection scheme is usually determined by the operator based on the fire conditions. The operator directly connects the water injection pipeline on site, which has the risk of explosion and injury to the operator when the water injection pipe is connected. Summary of the invention

[0006] In order to solve the technical problems existing in the above-mentioned background technology, the present invention provides a centralized anti-misfilling automatic water injection fire extinguishing system and method for energy storage power stations, which can integrate fire detection, automatic water injection fire extinguishing and intelligent control into one, thereby improving the safety performance of electrochemical energy storage power stations.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] A first aspect of the present invention provides a centralized, mistakenly-filled, automatic water injection fire-extinguishing system for an energy storage power station.

[0009] A centralized anti-misfilling automatic water injection fire extinguishing system for energy storage power stations, comprising:

[0010] A water injection fire control unit and several distributed sub-control units; the distributed sub-control units correspond one to one with the energy storage power station;

[0011] The water injection fire control unit includes a main controller, a main water tank and a water injection pump; the water injection pump is connected to the main controller; the distributed sub-control unit includes a sub-controller, a sub-water tank, a sensing module and an execution module; the main water tank is connected to each sub-water tank; the main controller communicates with each sub-controller;

[0012] The sensing module is used to sense the fire information of the corresponding energy storage power station and transmit it to the sub-controller; the sub-controller is used to control the corresponding execution module to execute matching instructions and link the main controller to control the working state of the water injection pump according to the transmitted fire information of the energy storage power station.

[0013] As an implementation mode, the perception module includes a multi-dimensional detector; the multi-dimensional detector is used to perceive different attribute information of the fire information corresponding to the energy storage power station.

[0014] As an implementation manner, the multi-dimensional detector is composed of at least two types of fire sensors.

[0015] As an implementation mode, the sub-controller is used to determine that a fire accident has occurred in the corresponding energy storage power station and output an alarm signal when it is determined that the information detected by the multi-dimensional detector exceeds a set threshold range.

[0016] As an implementation manner, the sensing module further includes a water level sensor; the water level sensor is used to sense water level information in the corresponding sub-water tank.

[0017] As an implementation mode, the execution module includes a nozzle and a water inlet valve, and the nozzle and the water inlet valve are connected to the corresponding sub-controller.

[0018] As an implementation method, the distributed sub-control unit and the corresponding energy storage power station are integrated in the corresponding cabin.

[0019] As an implementation mode, each cabin is provided with a unique code, and the code of each cabin is stored in association with its position.

[0020] A second aspect of the present invention provides a control method for a centralized, mis-filling-proof automatic water injection fire extinguishing system for an energy storage power station.

[0021] A control method for a centralized anti-misfilling automatic water injection fire extinguishing system for an energy storage power station, comprising:

[0022] Determine whether a fire accident has occurred in the corresponding energy storage power station based on the fire information detected by the sensing module;

[0023] If no fire accident occurs in any energy storage power station, the response instruction feedback information of each execution module is regularly inspected to ensure that each execution module is in normal working state;

[0024] If a fire accident is detected in an energy storage power station, the corresponding execution module is controlled to execute the water inlet valve and nozzle opening instructions and the main controller is linked to control the water injection pump to be in working state.

[0025] As an implementation method, when no fire accident occurs in all energy storage power stations, the water level in the main water tank is maintained at a set position.

[0026] The beneficial effects of the present invention are:

[0027] (1) The present invention detects fire information in each energy storage power station and then determines whether a fire occurs in the corresponding energy storage power station. When a fire occurs, the automatic control execution module executes matching instructions and links the main controller to control the working state of the water injection pump, thereby realizing rapid positioning of the energy storage power station where the fire occurs and automatically injecting water to provide sufficient water source for the fire extinguishing device of the corresponding energy storage power station.

[0028] (2) The present invention utilizes a multi-dimensional detector to detect fire information of preset dimensions of an energy storage power station, such as temperature and smoke concentration, and then determines whether a fire accident has occurred in the corresponding energy storage power station based on the principle that the information detected by the multi-dimensional detector exceeds a set threshold range, thereby avoiding false alarms of fire accidents and improving the accuracy of fire accident detection.

[0029] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0031] Figure 1 It is a structural schematic diagram of a centralized anti-misfilling automatic water injection fire extinguishing system for an energy storage power station according to an embodiment of the present invention;

[0032] Figure 2 It is a flow chart of a control method of a centralized anti-misfilling automatic water injection fire extinguishing system for an energy storage power station according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] It should be noted that the following detailed descriptions are all illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0036] Figure 1 Schematic diagram of the structure of a centralized automatic water injection fire extinguishing system for preventing mis-injection for energy storage power stations according to an embodiment of the present invention. Figure 1 As shown, a centralized anti-misfilling automatic water injection fire extinguishing system for an energy storage power station according to an embodiment of the present invention comprises: a water injection fire control unit 1 and a plurality of distributed sub-prevention and control units 2; the distributed sub-prevention and control units 2 correspond to the energy storage power station one by one;

[0037] The water injection fire control unit includes a main controller, a main water tank and a water injection pump; the water injection pump is connected to the main controller; the distributed sub-control unit includes a sub-controller, a sub-water tank, a sensing module and an execution module; the main water tank is connected to each sub-water tank through a pipe 3; the main controller communicates with each sub-controller;

[0038] The sensing module is used to sense the fire information of the corresponding energy storage power station and transmit it to the sub-controller; the sub-controller is used to control the corresponding execution module to execute matching instructions and link the main controller to control the working state of the water injection pump according to the transmitted fire information of the energy storage power station.

[0039] This embodiment detects the fire information in each energy storage power station to determine whether a fire has occurred in the corresponding energy storage power station. When a fire occurs, the automatic control execution module executes matching instructions and links the main controller to control the working state of the water injection pump, thereby quickly locating the energy storage power station where the fire has occurred and automatically injecting water to provide sufficient water for the fire extinguishing device of the corresponding energy storage power station.

[0040] In this embodiment, the water injection pump is in a closed state under normal circumstances, and an air defense valve is provided in the pipeline to ensure that the pipeline is normally dry and the water inlet valve is in a pressure-free state; in addition, even if the water inlet valve is damaged, water will not enter the sub-water tanks in each energy storage power station because there is no water inside the pipeline.

[0041] In this embodiment, the perception module includes a multi-dimensional detector; the multi-dimensional detector is used to perceive different attribute information of the fire information corresponding to the energy storage power station.

[0042] The multi-dimensional detector is composed of at least two types of fire sensors. For example, the multi-dimensional detector is composed of a smoke detector and a temperature sensor; the smoke detector is used to monitor the smoke situation in the electrochemical energy storage power station; the temperature sensor is arranged in the battery stack, battery management system and preset key positions of the energy storage power station to monitor the temperature changes at the corresponding positions in real time.

[0043] It should be noted here that the smoke detector and the temperature sensor are both existing structures, and their specific models can be selected according to actual accuracy requirements.

[0044] In the specific implementation process, the sub-controller is used to determine that a fire accident has occurred in the corresponding energy storage power station and output an alarm signal when it is determined that the information detected by the multi-dimensional detector exceeds the set threshold range.

[0045] If only one detector in the multi-dimensional detector sounds an alarm, further observation is needed to see whether subsequent alarms from different detection devices will occur. If not, it may be a false alarm. If different alarms continue to occur and reach the set threshold, it is determined that a fire accident has occurred.

[0046] Among them, the alarm signal can be in the form of sound, text message, email, etc.

[0047] This embodiment uses a multi-dimensional detector to detect fire information of preset dimensions of the energy storage power station, such as temperature and smoke concentration, and then determines whether a fire accident has occurred in the corresponding energy storage power station based on the principle that the information detected by the multi-dimensional detector exceeds the set threshold range, thereby avoiding false alarms of fire accidents and improving the accuracy of fire accident detection.

[0048] In some other embodiments, the sensing module further includes a water level sensor, which is used to sense the water level information in the corresponding sub-water tank, so as to ensure sufficient water supply and achieve the purpose of timely fire extinguishing.

[0049] In one or more embodiments, the execution module includes a nozzle and a water inlet valve, which are connected to the corresponding sub-controller. The nozzle is installed at the key parts of the electrochemical energy storage power station, such as the battery compartment, the bottom of the battery module, etc., to release water flow for cooling and fire extinguishing. The water inlet valve is installed at the entrance of the pipeline leading to each sub-water tank, and its working state (such as open or closed) is controlled by the corresponding sub-controller.

[0050] In the specific implementation process, the distributed sub-prevention and control unit is integrated with the corresponding energy storage power station in the corresponding cabin. Each cabin is set with a unique code, and the code of each cabin is stored in association with its location. In this way, the location of the energy storage power station where the fire occurs can be quickly located.

[0051] In one or more embodiments, the master controller also communicates with the remote control terminal to allow remote operation of the centralized anti-misfilling automatic water injection fire extinguishing system for the energy storage power station, including starting, stopping, adjusting parameters, etc. In this way, necessary operations can be performed at a remote location, which improves the convenience of operation.

[0052] In one or more embodiments, each sub-controller is also connected to an image acquisition device, which is used to capture fire images in the energy storage power station and transmit them to the sub-controller, which evaluates the extent of fire damage based on a pre-trained deep learning model.

[0053] In other embodiments, the master controller can also automatically generate inspection reports, including information such as equipment status, maintenance records, alarm history, etc. These reports can be used to analyze the long-term operation status of the equipment.

[0054] Figure 2 1 is a flow chart of a control method for a centralized anti-misfilling automatic water injection fire extinguishing system for an energy storage power station according to an embodiment of the present invention. Figure 2 As shown, a control method of a centralized anti-misfilling automatic water injection fire extinguishing system for an energy storage power station in this embodiment includes:

[0055] Step 1: Determine whether a fire accident has occurred in the corresponding energy storage power station based on the fire information detected by the perception module;

[0056] Step 2: If no fire accident occurs in any energy storage power station, the response instruction feedback information of each execution module is regularly inspected to ensure that each execution module is in normal working state;

[0057] Step 3: If a fire accident is detected in an energy storage power station, the corresponding execution module is controlled to execute the water inlet valve and nozzle opening instructions and the main controller is linked to control the water injection pump to be in working state.

[0058] Specifically, in step 1, the perception module includes a multi-dimensional detector. When it is determined that the information detected by the multi-dimensional detector exceeds a set threshold range, it is determined that a fire accident has occurred in the corresponding energy storage power station and an alarm signal is output.

[0059] If only one detector in the multi-dimensional detector sounds an alarm, further observation is needed to see whether subsequent alarms from different detection devices will occur. If not, it may be a false alarm. If different alarms continue to occur and reach the set threshold, it is determined that a fire accident has occurred.

[0060] In step 2, the execution module includes a sprinkler and a water inlet valve, wherein the water inlet valve is a vulnerable component. If it is in a closed state for a long time, it may easily lead to valve failure and cannot be opened in an accident state. Therefore, it is necessary to regularly inspect the working status of each water inlet valve.

[0061] For example, the water inlet valve is set to automatically open and close, and the automatic inspection cycle is usually set to 7-14 days. Once the water inlet valve reaches the maximum opening, the water inlet valve will feedback the normal opening signal to the corresponding sub-controller, and the action will be executed normally; if the normal opening signal is not fed back, the abnormal opening signal will also be fed back to the corresponding sub-controller, and the operation and maintenance personnel are required to conduct on-site inspections, analyze and determine whether it is a problem with the communication cable or the valve itself, and take corresponding corrective measures; if the communication line is normal, it is a problem with the water inlet valve; if the water inlet valve is normal, it is a problem with the communication line. This improves the operating efficiency of the centralized anti-misfilling automatic water injection fire extinguishing system used in energy storage power stations, reduces the risk of failure, and ensures the reliability of fire-fighting equipment.

[0062] When no fire accident occurs in any energy storage power station, the water level in the main water tank is maintained at the set position.

[0063] In other embodiments, the water injection pump is also regularly tested for startup to ensure that it can be started and put into operation normally. This can be performed in non-emergency situations through an automated procedure to verify the reliability of the equipment.

[0064] The centralized anti-misfilling automatic water injection fire extinguishing system for energy storage power stations of this embodiment is applicable to the field of electrochemical energy storage. The centralized anti-misfilling automatic water injection fire extinguishing system for energy storage power stations proposed by the present invention has the characteristics of simple structure, rapid response, and convenient operation, and can effectively improve the safety performance of electrochemical energy storage power stations. Through intelligent monitoring and management, the need for manual intervention is reduced, and the risk brought by operators manually connecting water pipelines is increased, which is suitable for large-scale promotion and application.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A centralized anti-misfilling automatic water injection fire extinguishing system for energy storage power stations, characterized in that: include: A water injection fire control unit and several distributed sub-control units; the distributed sub-control units correspond one to one with the energy storage power station; The water injection fire control unit includes a main controller, a main water tank and a water injection pump; the water injection pump is connected to the main controller; the distributed sub-control unit includes a sub-controller, a sub-water tank, a sensing module and an execution module; the main water tank is connected to each sub-water tank; the main controller communicates with each sub-controller; The sensing module is used to sense the fire information of the corresponding energy storage power station and transmit it to the sub-controller; the sub-controller is used to control the corresponding execution module to execute matching instructions and link the main controller to control the working state of the water injection pump according to the transmitted fire information of the energy storage power station.

2. The centralized anti-misfilling automatic water injection fire extinguishing system for energy storage power station according to claim 1, characterized in that: The perception module includes a multidimensional detector; the multidimensional detector is used to perceive different attribute information of the fire information of the corresponding energy storage power station.

3. The centralized anti-misfilling automatic water injection fire extinguishing system for energy storage power station according to claim 2, characterized in that: The multi-dimensional detector is composed of at least two types of fire sensors.

4. The centralized anti-misfilling automatic water injection fire extinguishing system for energy storage power station according to claim 2, characterized in that: The sub-controller is used to determine that a fire accident has occurred in the corresponding energy storage power station and output an alarm signal when it is determined that the information detected by the multi-dimensional detector exceeds a set threshold range.

5. The centralized anti-misfilling automatic water injection fire extinguishing system for energy storage power station according to claim 1, characterized in that: The sensing module also includes a water level sensor; the water level sensor is used to sense the water level information in the corresponding sub-water tank.

6. The centralized anti-misfilling automatic water injection fire extinguishing system for energy storage power station according to claim 1, characterized in that: The execution module includes a nozzle and a water inlet valve, and the nozzle and the water inlet valve are connected to the corresponding sub-controller.

7. The centralized anti-misfilling automatic water injection fire extinguishing system for energy storage power station according to claim 1, characterized in that: The distributed sub-control units and the corresponding energy storage power stations are integrated in the corresponding cabins.

8. The centralized anti-misfilling automatic water injection fire extinguishing system for energy storage power station according to claim 7, characterized in that: Each cabin is assigned a unique code, and the code of each cabin is stored in association with its location.

9. A control method for a centralized anti-misfilling automatic water injection fire extinguishing system for an energy storage power station according to any one of claims 1 to 8, characterized in that: include: Determine whether a fire accident has occurred in the corresponding energy storage power station based on the fire information detected by the sensing module; If no fire accident occurs in any energy storage power station, the response instruction feedback information of each execution module is regularly inspected to ensure that each execution module is in normal working state; If a fire accident is detected in an energy storage power station, the corresponding execution module is controlled to execute the water inlet valve and nozzle opening instructions and the main controller is linked to control the water injection pump to be in working state.

10. The control method of the centralized anti-misfilling automatic water injection fire extinguishing system for energy storage power station according to claim 9, characterized in that: When no fire accident occurs in any energy storage power station, the water level in the main water tank is maintained at the set position.

Images