Multi-nozzle cooperative control method for fire extinguishing of electrochemical energy storage system

Abstract

The invention relates to the technical field of electrochemical energy storage systems, in particular to a multi-nozzle cooperative control method for fire extinguishing of an electrochemical energy storage system, and the method comprises the steps: obtaining a cargo distribution diagram and an infrared thermal imaging diagram of an electrochemical energy storage warehouse; when a fire disaster is detected, matching the cargo distribution map with the infrared thermal imaging map to determine an energy storage module fire-fighting area; calling a main nozzle to carry out fire extinguishing operation on the basis of the energy storage module fire fighting area; according to the fire extinguishing operation range of the main nozzle, an auxiliary nozzle set is called to assist the main nozzle in fire extinguishing operation, and the auxiliary nozzle set comprises at least one nozzle. According to the technical scheme, intelligent fire extinguishing can be carried out on fire disasters in the electrochemical energy storage system, and the fire extinguishing efficiency is improved while the cargo loss is reduced.

Description

Technical Field

[0001] The present application generally relates to the technical field of electrochemical energy storage systems, and more particularly to a multi-nozzle coordinated control method for fire extinguishing of electrochemical energy storage systems. Background Art

[0002] Electrochemical energy storage fires are characterized by fast combustion, high smoke, easy explosion, and difficulty in extinguishing. General fire extinguishers such as dry powder fire extinguishers and carbon dioxide fire extinguishers are difficult to interrupt the chain decomposition reaction inside lithium batteries. Currently, water-based foam fire extinguishing agents are mainly used for effective fire extinguishing.

[0003] The current fire fighting strategy for electrochemical energy storage systems is generally to spray fire extinguishing agents after smoke gas or abnormal temperature is detected after the battery thermal runaway. The fire extinguishing agent is sprayed on the entire energy storage system instead of the fire point or the area of ​​the battery module where the thermal runaway occurs. This requires a large amount of fire extinguishing agent and reduces the fire fighting efficiency of multiple groups of nozzles. In addition, even if the open fire in the energy storage system is extinguished, it will still re-ignite. Therefore, this fire fighting strategy is too simple and rigid, it is difficult to effectively ensure the safety of the battery, and it is easy to cause damage to the battery that has not caught fire.

[0004] Therefore, when extinguishing a fire, the spatial characteristics of the electrochemical energy storage system and the disaster characteristics should be considered as comprehensively as possible, and multiple groups of nozzles should be used to quickly extinguish the fire source disaster area. Summary of the invention

[0005] In order to solve the above technical problems of the present application, the present application provides a multi-nozzle coordinated control method for fire extinguishing in an electrochemical energy storage system, so as to quickly extinguish a fire in the electrochemical energy storage system.

[0006] In a first aspect, the present invention provides a multi-nozzle coordinated control method for fire extinguishing of an electrochemical energy storage system, comprising: Obtain cargo distribution maps and infrared thermal imaging images of electrochemical energy storage warehouses; When a fire is detected, the cargo distribution map and the infrared thermal imaging map are matched to determine the fire protection zone of the energy storage module; Based on the energy storage module fire protection area, the main nozzle is called to perform fire extinguishing operations; According to the fire extinguishing operation range of the main nozzle, a secondary nozzle group is called to assist the main nozzle in performing the fire extinguishing operation, wherein the secondary nozzle group includes at least one nozzle; The fire extinguishing operation range of each nozzle in the secondary nozzle group is determined based on the fire extinguishing area of ​​the energy storage module and the fire extinguishing operation range of the main nozzle to coordinate fire extinguishing in the fire extinguishing area of ​​the energy storage module.

[0007] In one embodiment, when a fire is detected, matching the cargo distribution map and the infrared thermal imaging map to determine the energy storage module fire protection zone includes: Real-time monitoring and alarm of fires based on preset IoT devices; When a fire is detected, an initial energy storage disaster area is obtained based on the infrared thermal imaging image and a preset temperature threshold; The cargo distribution map and the infrared thermal imaging map are matched to obtain the energy storage module fire protection area.

[0008] In one embodiment, obtaining the initial energy storage disaster area based on the infrared thermal imaging image and a preset temperature threshold comprises: The area in the infrared thermal imaging image with a temperature greater than a preset threshold is retained as the initial energy storage disaster area, and the area in the infrared thermal imaging image with a temperature not greater than the preset threshold is discarded.

[0009] In one embodiment, matching the cargo distribution map and the infrared thermal imaging map to obtain the energy storage module fire protection zone includes: Determining the specific storage location of the initial energy storage disaster area in the electrochemical energy storage warehouse according to the cargo distribution map; At the specific storage location, a localized disaster energy storage module including the initial energy storage disaster area is determined according to the cargo distribution map, wherein the localized disaster energy storage module spatially includes the initial energy storage disaster area and is composed of a minimum number of independent energy storage units; The space area occupied by the localized disaster energy storage module in the electrochemical energy storage warehouse is used as the energy storage module fire protection zone.

[0010] In one embodiment, the calling of the main nozzle to perform fire extinguishing operation based on the energy storage module fire fighting area includes: The nozzle closest to the fire protection area of ​​the energy storage module is used as the main nozzle; The spraying angle and flow rate of the main nozzle are controlled so that the fire extinguishing agent sprayed by the main nozzle can cover the fire fighting area of ​​the energy storage module to the maximum extent.

[0011] In one embodiment, calling the auxiliary nozzle group to assist the main nozzle in performing the fire extinguishing operation according to the fire extinguishing operation range of the main nozzle includes: Determine whether the fire extinguishing operation range of the main nozzle is larger than the fire fighting area of ​​the energy storage module. If so, there is no need to call the auxiliary nozzle; If it is not greater than, the fire protection area of ​​the energy storage module that cannot be covered by the fire extinguishing agent will be regarded as a potential fire protection area, and the nozzles that can minimize and completely cover the potential fire protection area will be called to form a secondary nozzle group to assist the main nozzle in fire extinguishing operations.

[0012] In one embodiment, the determining of the fire extinguishing operation range of each nozzle in the secondary nozzle group based on the fire protection area of ​​the energy storage module and the fire extinguishing operation range of the main nozzle further includes: The overall fire extinguishing operation range of the main nozzle and each nozzle in the auxiliary nozzle group is not less than the range of the fire protection zone of the energy storage module, and the independent fire extinguishing ranges of the main nozzle and each nozzle in the auxiliary nozzle group do not overlap with each other.

[0013] The present application also provides a multi-nozzle collaborative control system for electrochemical energy storage system fire extinguishing, including a processor and a memory, wherein the memory stores computer program instructions, and when the computer program instructions are executed by the processor, the multi-nozzle collaborative control method for electrochemical energy storage system fire extinguishing according to the first aspect of the present application is implemented.

[0014] The technical solution of this application has the following beneficial technical effects: Through the technical solution provided by the present application, it is possible to combine the heavy cargo storage characteristics and disaster characteristics of the electrochemical energy storage system to carry out targeted intelligent fire extinguishing in the area where the fire occurs. At the same time, considering that the disaster occurrence area in the infrared thermal imaging image is not consistent with the actual storage range, the same energy storage module may have abnormal temperatures in some areas, but because they belong to the same module, the risk of fire in non-abnormal areas is also high. Therefore, the present invention performs systematic control of multiple nozzles, so that the fire disaster area can be quickly extinguished.

[0015] Furthermore, due to the impact force of the nozzle, once the foam covering layer is destroyed, the covering and suffocating effect of the fire extinguisher will be destroyed, causing the burning material to come into contact with the air and thus causing the fire to reignite. In the present invention, when the nozzles are coordinated and controlled, the independent fire extinguishing ranges of each nozzle are made not to overlap with each other, thereby further reducing the probability of fire reignition. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 is a flow chart of a multi-nozzle coordinated control method for fire extinguishing of an electrochemical energy storage system according to an embodiment of the present application; Figure 2 Schematic diagram of the fire protection area of ​​the energy storage module according to an embodiment of the present application; Figure 3 It is a block diagram of a multi-nozzle coordinated control system for extinguishing a fire in an electrochemical energy storage system according to an embodiment of the present application. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0018] It should be understood that when the terms "first", "second", etc. are used in the claims, specification and drawings of the present application, they are only used to distinguish different objects, rather than to describe a specific order. The terms "include" and "comprise" used in the specification and claims of the present application indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections.

[0019] According to a first aspect of the present application, the present application provides a multi-nozzle coordinated control method for fire extinguishing of an electrochemical energy storage system. Figure 1 1 is a flow chart of a multi-nozzle coordinated control method for fire extinguishing of an electrochemical energy storage system according to an embodiment of the present application. Figure 1 As shown, the test method 100 includes steps S101 to S105, which are described in detail below. S101, obtaining a cargo distribution map and an infrared thermal imaging map of an electrochemical energy storage warehouse.

[0020] In one embodiment, an industrial camera may be used to capture images of an electrochemical energy storage warehouse to obtain a cargo distribution map. Furthermore, a three-dimensional model of the electrochemical energy storage warehouse may be constructed by combining the acquired images of the electrochemical energy storage warehouse with BIM modeling.

[0021] In this optional embodiment, the electrochemical energy storage warehouse can be monitored on a daily basis by infrared thermal imagers or infrared cameras. It is worth noting that for any cargo distribution map or infrared thermal imaging map, the corresponding perspective content can be obtained from the three-dimensional model of the electrochemical energy storage warehouse, so as to grasp the actual storage of cargo specifications and dimensions in real time.

[0022] S102, when a fire is detected, the cargo distribution map and the infrared thermal imaging map are matched to determine the fire protection zone of the energy storage module.

[0023] In one embodiment, a variety of detectors and sound and light alarms can be arranged in the electrochemical energy storage system as preset IoT devices for real-time monitoring and alarming of fires, such as smoke detectors, combustible gas detectors, etc. At the same time, multiple nozzles can be arranged in the electrochemical energy storage warehouse to cover the cargo storage area in all directions.

[0024] In this optional embodiment, considering that the fire in the electrochemical energy storage system comes from a battery fire caused by thermal runaway of the battery in the module or an electrical fire caused by a short circuit outside the module and other reasons, an alarm will be generated in time when any detector sends an alarm signal or the temperature in the infrared thermal imaging is abnormal.

[0025] like Figure 2 The figure shows a schematic diagram of the fire protection area of ​​the energy storage module involved in the present invention. In an optional embodiment, when a fire is detected, the fire protection area of ​​the energy storage module can be determined by matching the cargo distribution map and the infrared thermal imaging map according to the BIM model of the electrochemical energy storage warehouse. The reason is that the disaster area in the infrared thermal imaging map is often inconsistent with the actual range of cargo storage. The same energy storage module may only have abnormal temperatures in some areas, but since they belong to the same module, the risk of fire in non-abnormal areas is also high. Therefore, the present invention performs system control on multiple nozzles, so that the fire disaster area can be quickly extinguished.

[0026] In this optional embodiment, a temperature threshold can be pre-set, for example, 45 degrees Celsius, for daily monitoring of the electrochemical energy storage warehouse, and in the event of a fire, the area in the infrared thermal imaging image that is greater than the preset temperature threshold is retained as the initial energy storage disaster area, and the area in the infrared thermal imaging image that is not greater than the preset temperature threshold is discarded.

[0027] Furthermore, if Figure 2 As shown, by matching and combining the cargo distribution map and the infrared thermal imaging map, the specific storage location of the initial energy storage disaster area in the electrochemical energy storage warehouse can be determined based on the cargo distribution map, and the localized disaster energy storage module containing the initial energy storage disaster area can be determined based on the storage location. The localized disaster energy storage module spatially contains the initial energy storage disaster area and is composed of the smallest number of independent energy storage units, that is, the localized disaster energy storage module is composed of multiple independent battery energy storage units. When a fire occurs in a certain area within this localized disaster energy storage module, the spatial area occupied by this smallest localized disaster energy storage module containing the fire area is used as the energy storage module fire protection area.

[0028] S103, calling the main nozzle to perform fire extinguishing operations based on the energy storage module fire protection area.

[0029] In one embodiment, after determining the fire protection zone of the energy storage module, a nozzle closest to the fire protection zone of the energy storage module is used as the main nozzle, and the spraying angle and flow rate of the main nozzle are adjusted so that the fire extinguishing agent sprayed by the main nozzle can maximize the coverage of the fire protection zone of the energy storage module, thereby maximizing the saving of fire extinguishing agent resources and nozzle resources.

[0030] S104, calling a secondary nozzle group to assist the primary nozzle in performing fire extinguishing operations according to the fire extinguishing operation range of the primary nozzle, the secondary nozzle group including at least one nozzle.

[0031] In one embodiment, it is first necessary to determine whether the fire extinguishing operation range of the main nozzle is larger than the fire protection zone of the energy storage module. If it is, it means that the fire extinguishing operation range of the current main nozzle is sufficient to cover the fire area, so there is no need to call the auxiliary nozzle.

[0032] In this optional embodiment, if the fire extinguishing operation range of the main nozzle is not larger than the fire fighting area of ​​the energy storage module, the fire fighting area of ​​the energy storage module that cannot be covered by the fire extinguishing agent will be regarded as a potential danger fire fighting area, and the nozzles that can minimize the complete coverage of the potential danger fire fighting area will be called to form a secondary nozzle group to assist the main nozzle in performing fire extinguishing operations.

[0033] That is, when it is found that the fire-fighting operation range of the current main nozzle is insufficient to cover the fire area, support should be deployed from the nozzles that are closest to the energy storage module fire-fighting area and whose range can also reach the energy storage module fire-fighting area according to the principle of distance priority. At the same time, in order to prevent the fire-fighting operation range of a secondary nozzle from being difficult to cover the hidden danger fire-fighting area, it is possible to simultaneously calculate which nozzles in the current hidden danger fire-fighting area can be minimized by adjusting the angle and controlling the flow rate relative to the surrounding nozzles within the range to completely cover the hidden danger fire-fighting area.

[0034] S105, determining the fire extinguishing operation range of each nozzle in the auxiliary nozzle group based on the fire extinguishing area of ​​the energy storage module and the fire extinguishing operation range of the main nozzle to coordinate fire extinguishing in the fire extinguishing area of ​​the energy storage module.

[0035] In one embodiment, due to the impact force of the nozzle, once the foam covering layer is destroyed, the covering and suffocating effect of the fire extinguisher will be destroyed, so that the burning material will contact with the air and cause the fire to reignite.

[0036] Furthermore, in the present invention, the overall fire extinguishing operation range of each nozzle in the main nozzle and the auxiliary nozzle group should be no less than the fire protection zone range of the energy storage module, ensuring that the independent fire extinguishing ranges of each nozzle in the main nozzle and the auxiliary nozzle group do not overlap with each other, thereby preventing the foam covering layer sprayed by each nozzle from being destroyed by other nozzles due to inconsistent angles, flow rates, etc., thereby further reducing the probability of re-ignition of the fire.

[0037] The above introduces the technical principles and implementation details of the multi-nozzle coordinated control method for fire extinguishing of the electrochemical energy storage system of the present application through specific embodiments. Through the technical solution provided by the present application, it is possible to combine the heavy cargo storage characteristics and disaster characteristics of the electrochemical energy storage system to carry out fixed-point intelligent fire extinguishing in the area where the fire occurs. At the same time, considering that the disaster occurrence area in the infrared thermal imaging image is not consistent with the actual storage range, the same energy storage module may have abnormal temperatures in some areas, but because they belong to the same module, the risk of fire in non-abnormal areas is also high. Therefore, the present invention performs system control on multiple nozzles, so that the fire disaster area can be quickly extinguished.

[0038] According to the second aspect of the present application, the present application also provides a multi-nozzle coordinated control system for fire extinguishing of an electrochemical energy storage system. Figure 3 is a block diagram of a multi-nozzle coordinated control system for fire extinguishing of an electrochemical energy storage system according to an embodiment of the present application. Figure 3 As shown, the device 50 includes a processor and a memory, the memory stores computer program instructions, and when the computer program instructions are executed by the processor, a multi-nozzle coordinated control method for fire extinguishing of an electrochemical energy storage system according to the first aspect of the present application is implemented. The device also includes other components well known to those skilled in the art, such as a communication bus and a communication interface, whose settings and functions are known in the art, so they are not repeated here.

[0039] In the present application, the aforementioned memory may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, apparatus or device. For example, a computer-readable storage medium may be any suitable magnetic storage medium or magneto-optical storage medium, such as a resistive random access memory RRAM (Resistive Random Access Memory), a dynamic random access memory DRAM (Dynamic Random Access Memory), a static random access memory SRAM (Static Random-Access Memory), an enhanced dynamic random access memory EDRAM (Enhanced Dynamic Random Access Memory), a high-bandwidth memory HBM (High-Bandwidth Memory), a hybrid memory cube HMC (Hybrid Memory Cube), etc., or any other medium that can be used to store the required information and can be accessed by an application, a module, or both. Any such computer storage medium may be part of a device or accessible or connectable to a device. Any application or module described in this application may be implemented using computer-readable / executable instructions that may be stored or otherwise maintained by such a computer-readable medium.

[0040] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A multi-nozzle coordinated control method for fire extinguishing of an electrochemical energy storage system, characterized in that: include: Obtain cargo distribution maps and infrared thermal imaging images of electrochemical energy storage warehouses; When a fire is detected, the cargo distribution map and the infrared thermal imaging map are matched to determine the fire protection zone of the energy storage module; Based on the energy storage module fire protection area, the main nozzle is called to perform fire extinguishing operations; According to the fire extinguishing operation range of the main nozzle, a secondary nozzle group is called to assist the main nozzle in performing the fire extinguishing operation, wherein the secondary nozzle group includes at least one nozzle; The fire extinguishing operation range of each nozzle in the secondary nozzle group is determined based on the fire extinguishing area of ​​the energy storage module and the fire extinguishing operation range of the main nozzle to coordinate fire extinguishing in the fire extinguishing area of ​​the energy storage module.

2. A multi-nozzle coordinated control method for fire extinguishing of an electrochemical energy storage system according to claim 1, characterized in that: When a fire is detected, matching the cargo distribution map and the infrared thermal imaging map to determine the energy storage module fire protection zone includes: real-time monitoring and alarming of the fire based on a preset Internet of Things device; when a fire is detected, obtaining an initial energy storage disaster zone based on the infrared thermal imaging map and a preset temperature threshold; and matching the cargo distribution map and the infrared thermal imaging map to obtain the energy storage module fire protection zone.

3. A multi-nozzle coordinated control method for fire extinguishing of an electrochemical energy storage system according to claim 2, characterized in that: The method of obtaining the initial energy storage disaster area based on the infrared thermal imaging image and the preset temperature threshold comprises: retaining the area in the infrared thermal imaging image with a temperature greater than the preset temperature threshold as the initial energy storage disaster area, and discarding the area in the infrared thermal imaging image with a temperature not greater than the preset temperature threshold.

4. A multi-nozzle coordinated control method for fire extinguishing of an electrochemical energy storage system according to claim 2, characterized in that: The matching of the cargo distribution map and the infrared thermal imaging map to obtain the energy storage module fire protection zone includes: determining the specific storage location of the initial energy storage disaster zone in the electrochemical energy storage warehouse according to the cargo distribution map; at the specific storage location, determining a limited disaster energy storage module including the initial energy storage disaster zone according to the cargo distribution map, the limited disaster energy storage module spatially including the initial energy storage disaster zone and consisting of the least number of independent energy storage units; and using the spatial area occupied by the limited disaster energy storage module in the electrochemical energy storage warehouse as the energy storage module fire protection zone.

5. A multi-nozzle coordinated control method for fire extinguishing of an electrochemical energy storage system according to claim 1, characterized in that: The method of calling the main nozzle to perform fire extinguishing operations based on the energy storage module fire protection area includes: using the nozzle closest to the energy storage module fire protection area as the main nozzle; controlling the spray angle and flow rate of the main nozzle so that the fire extinguishing agent sprayed by the main nozzle can maximize the coverage of the energy storage module fire protection area.

6. A multi-nozzle coordinated control method for fire extinguishing of an electrochemical energy storage system according to claim 1, characterized in that: The calling of the auxiliary nozzle group to assist the main nozzle in performing fire extinguishing operations according to the fire extinguishing operation range of the main nozzle includes: judging whether the fire extinguishing operation range of the main nozzle is larger than the fire fighting area of ​​the energy storage module; if so, there is no need to call the auxiliary nozzle; if not, the fire fighting area of ​​the energy storage module that cannot be covered by the fire extinguishing agent is regarded as a potential danger fire fighting area, and calling the nozzles that can minimize and completely cover the potential danger fire fighting area to form an auxiliary nozzle group to assist the main nozzle in performing fire extinguishing operations.

7. A multi-nozzle coordinated control method for fire extinguishing of an electrochemical energy storage system according to claim 1, characterized in that: The method of determining the fire extinguishing operation range of each nozzle in the secondary nozzle group based on the fire extinguishing operation range of the energy storage module and the main nozzle also includes: the overall fire extinguishing operation range of the main nozzle and each nozzle in the secondary nozzle group is not less than the range of the fire extinguishing zone of the energy storage module, and the independent fire extinguishing ranges of the main nozzle and each nozzle in the secondary nozzle group do not overlap with each other.

8. A multi-nozzle coordinated control system for fire extinguishing of an electrochemical energy storage system, characterized in that: The invention comprises a processor and a memory, wherein the memory stores computer program instructions, and when the computer program instructions are executed by the processor, a multi-nozzle coordinated control method for fire extinguishing of an electrochemical energy storage system according to any one of claims 1 to 7 is implemented.

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