Energy storage cabin fire linkage control method and system

Abstract

The application relates to the technical field of energy storage safety control, and discloses a kind of energy storage cabin fire-fighting linkage control method and system, the method comprises the following steps: S1: establishing the fire-fighting linkage mapping relationship between battery unit in energy storage cabin and gate valve;S2: obtain the fire alarm characteristic data of battery unit and the environmental data of energy storage cabin, and correct the fire alarm determination condition according to the environmental data;S3: determine the fire alarm positioning result based on the corrected fire alarm determination condition and fire alarm characteristic data, and send the fire alarm positioning result to the fire host, so that the fire host determines the target gate valve according to the fire-fighting linkage mapping relationship;S4: control the target gate valve to open, so that the fire extinguishing medium enters the battery unit corresponding to the fire alarm positioning result.The application scheme improves the accuracy, timeliness and reliability of the directional fire-fighting linkage of energy storage cabin through environmental correction of fire alarm determination, positioning result mapping gate valve and spray feedback closed loop.

Description

Technical Field

[0001] This invention relates to the field of energy storage safety control technology, and in particular to a fire-fighting linkage control method and system for an energy storage compartment. Background Technology

[0002] With the expansion of new energy power plants and industrial and commercial energy storage, containerized energy storage modules are widely used in photovoltaic power plants, wind farms, mining microgrids, and remote power supply scenarios. Energy storage modules typically house multiple battery units, each with a compact space. These units generate heat during operation, and if thermal runaway occurs in a localized battery, the heat and characteristic gases can spread to adjacent areas in a short time. Therefore, the fire suppression system needs to locate the abnormal location as early as possible and deliver extinguishing agents to the corresponding area.

[0003] Existing energy storage compartments typically include equipment for temperature acquisition, characteristic gas detection, fire suppression control panels, extinguishing agent piping, and selector valves. In engineering applications, fire alarm judgment often focuses on alarm triggering, with the fire suppression control panel initiating corresponding fire suppression actions upon receiving the alarm. However, within the actual compartment, battery cell numbers, fire zone numbers, piping branches, and selector valve addresses are often maintained by different systems. The lack of an executable mapping and verification between fire alarm location results and selector valves can easily lead to situations where the alarm location is determined, but the fire suppression control panel struggles to accurately match the target valve.

[0004] Furthermore, energy storage compartments are often located in high-altitude areas, areas with large diurnal temperature variations, or unattended locations. Changes in ambient air pressure and internal temperature can affect the concentration of characteristic gases and the criteria for determining temperature rise. If fixed fire alarm determination conditions are still used, it may lead to inaccurate location results. Even if the target selection valve has been opened, it is necessary to further confirm the valve operation, pipeline pressure changes, and changes in fire alarm characteristics after discharge. Otherwise, it is difficult to determine whether the extinguishing medium has actually entered the target battery unit and whether the fire suppression linkage has achieved the desired suppression effect.

[0005] Therefore, there is an urgent need for a fire-fighting linkage control method for energy storage compartments, which can form a continuous control link between fire alarm judgment, location results, fire control panel valve selection, and spray execution, thereby improving the accuracy and reliability of directional fire-fighting linkage for energy storage compartments. Summary of the Invention

[0006] This invention provides a fire alarm linkage control method and system for energy storage compartments, which at least solves the problem of inaccurate fire alarm positioning and directional fire alarm linkage in existing energy storage compartments.

[0007] To achieve the above objectives, a first aspect of the present invention provides a fire-fighting linkage control method for an energy storage compartment, the method comprising the following steps: S1: Establish the fire-fighting linkage mapping relationship between the battery units in the energy storage compartment and the selector valve; S2: Obtain the fire alarm characteristic data of the battery unit and the environmental data of the energy storage compartment, and correct the fire alarm judgment conditions based on the environmental data; S3: Determine the fire alarm location result based on the corrected fire alarm judgment conditions and the fire alarm feature data, and send the fire alarm location result to the fire control panel, so that the fire control panel can determine the target selector valve according to the fire linkage mapping relationship; S4: Control the target selection valve to open, so that the fire extinguishing medium enters the battery unit corresponding to the fire alarm location result.

[0008] To achieve the above objectives, a second aspect of the present invention also provides a fire-fighting linkage control system for an energy storage compartment, the system comprising: The initial module is used to establish the fire-fighting linkage mapping relationship between the battery units in the energy storage compartment and the gate valve; The correction module is used to acquire fire alarm characteristic data of the battery unit and environmental data of the energy storage compartment, and to correct the fire alarm judgment conditions based on the environmental data. The selection module is used to determine the fire alarm location result based on the modified fire alarm judgment conditions and the fire alarm feature data, and send the fire alarm location result to the fire control panel, so that the fire control panel can determine the target selector valve according to the fire linkage mapping relationship; The execution module is used to control the target selection valve to open, so that the fire extinguishing medium enters the battery unit corresponding to the fire alarm location result.

[0009] The beneficial effects of this invention are as follows: By establishing a fire alarm linkage mapping relationship between the battery unit and the selector valve, the fire alarm location result can be directly converted into a selector valve control object that the fire control panel can execute; at the same time, the fire alarm judgment conditions are corrected by combining the energy storage compartment environmental data, reducing the impact of environmental changes on the accuracy of fire alarm identification and location. Therefore, after determining the fire alarm location result, the corresponding selector valve can be controlled to open, allowing the extinguishing medium to be directed into the abnormal battery unit, reducing mismatch of fire alarm linkage objects and ineffective discharge, and improving the accuracy, timeliness of response, and reliability of directional fire alarm linkage in the energy storage compartment. Attached Figure Description

[0010] Figure 1 This is a schematic diagram illustrating the execution flow of the fire-fighting linkage control method for the energy storage compartment in an embodiment of the present invention; Figure 2 This is a flowchart of the fire-fighting linkage control of the energy storage compartment in an embodiment of the present invention; Figure 3 This is a schematic diagram of the operating architecture of the fire-fighting linkage control system for the energy storage compartment in an embodiment of the present invention. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0012] This invention provides a fire-fighting linkage control method for an energy storage compartment, referring to... Figure 1 , Figure 1 This is a flowchart illustrating the fire-fighting linkage control method for the energy storage compartment according to an embodiment of the present invention.

[0013] In this embodiment, a fire-fighting linkage control method for an energy storage compartment includes the following steps: S1: Establish the fire-fighting linkage mapping relationship between the battery units in the energy storage compartment and the selector valve.

[0014] Specifically, the battery unit identifier, fire zone number, selector valve address, pipeline branch identifier, and corresponding pipeline coverage information are obtained within the energy storage compartment. Based on the spatial position relationship of the battery units within the energy storage compartment and the fire zone division, each battery unit is mapped to at least one selector valve and its pipeline branch that can cover its area, forming a fire linkage mapping relationship that includes battery unit identifier, selector valve address, and pipeline path information.

[0015] In this embodiment of the invention, the battery unit is determined according to the minimum control granularity of the actual fire compartment. It can correspond to an independent battery area or a local area separately covered by a pipeline branch. Each battery unit is equipped with a unique battery unit identifier, which is used to indicate the abnormal location in the subsequent fire alarm location results and to query the corresponding fire linkage object.

[0016] When establishing the fire linkage mapping relationship, the installation location, fire compartment, gate valve address, pipeline branch identification, and coverage information of each battery unit in the energy storage compartment are obtained. The pipeline coverage information characterizes the area of ​​the energy storage compartment that the extinguishing medium can reach after being discharged through the corresponding gate valve and pipeline branch. Based on the spatial relationship of the battery units within the energy storage compartment, each battery unit is associated with a gate valve and pipeline branch that can cover its area, avoiding linkage mismatches that can occur when pipeline wiring, valve addresses, or site layout changes due to association based solely on number sequence.

[0017] For example, battery cell identifiers can be designated B1, B2, and B3, selector valve addresses V1 and V2, and pipeline branch identifiers P1 and P2. When pipeline branch P1, after being opened by selector valve V1, covers the areas where B1 and B2 are located, a correspondence is established between B1 and V1 / P1, and between B2 and V1 / P1. Similarly, when pipeline branch P2, after being opened by selector valve V2, covers the area where B3 is located, a correspondence is established between B3 and V2 / P2. If a battery cell is simultaneously within the coverage boundaries of two pipeline branches, it can be mapped to multiple candidate selector valves and pipeline branches, and the pipeline path information is recorded in the mapping relationship for subsequent use in determining the target selector valve.

[0018] The resulting fire alarm linkage mapping relationship includes at least the battery unit identifier, fire compartment number, selector valve address, pipeline branch identifier, and pipeline path information. This mapping relationship is used to convert the subsequently obtained fire alarm location results into an executable selector valve control object, thus establishing a continuous correspondence between the fire alarm location, the fire control panel valve selection, and the extinguishing medium discharge path.

[0019] Step S2: Obtain the fire alarm characteristic data of the battery unit and the environmental data of the energy storage compartment, and correct the fire alarm judgment conditions based on the environmental data.

[0020] Specifically, the fire alarm characteristic data includes the temperature rise data and temperature rise rate of the battery unit, as well as the characteristic gas concentration change data in the sampling area corresponding to the battery unit; the characteristic gas is at least one of carbon monoxide and hydrogen; the environmental data includes ambient air pressure and cabin temperature.

[0021] Furthermore, the fire alarm determination conditions are corrected based on the environmental data, including: correcting the characteristic gas determination conditions based on the ambient air pressure, and determining the temperature rise reference of the battery unit based on the cabin temperature; correcting the temperature rise determination conditions based on the temperature rise reference and the temperature rise rate to obtain the corrected fire alarm determination conditions.

[0022] In this embodiment of the invention, in step S2, corresponding fire alarm characteristic data is acquired according to the arrangement position of the battery cells, and environmental data of the energy storage compartment is acquired simultaneously. The fire alarm characteristic data includes the temperature rise data, temperature rise rate, and characteristic gas concentration change data within the sampling area corresponding to the battery cell. The temperature rise data reflects the temperature change of the battery cell relative to its normal operating state, the temperature rise rate reflects the speed of temperature increase, and the characteristic gas concentration change data reflects the possible release of carbon monoxide or hydrogen in the early stages of thermal runaway. The environmental data includes ambient air pressure and compartment temperature, where ambient air pressure is used to correct the characteristic gas determination criteria, and compartment temperature is used to determine the temperature rise baseline under the current operating environment.

[0023] Specifically, temperature data for each battery cell within a continuous time window is acquired according to a preset sampling period. The preset sampling period is 1 to 30 seconds, and the continuous time window is 30 seconds to 10 minutes. The temperature of a battery cell at the current sampling moment is compared with the reference temperature of the same battery cell during the previous stable operating period to obtain temperature rise data; the temperature rise rate is determined based on the temperature change amplitude within the continuous time window. The reference temperature is determined by the stable operating temperature of the same battery cell during the 5 to 60 minutes before a fire alarm is triggered, or by the temperature range of adjacent battery cells under the same operating conditions.

[0024] For temperature rise determination criteria, a temperature rise threshold and a temperature rise rate threshold are set. When the temperature rise of a battery cell relative to the temperature rise reference reaches 5°C to 20°C, or the temperature rise rate reaches 1°C / min to 5°C / min, the battery cell is determined to meet the abnormal temperature rise condition. For characteristic gas determination criteria, a characteristic gas concentration threshold and a concentration change threshold are set. When the carbon monoxide concentration reaches 20ppm to 200ppm, or the hydrogen concentration reaches 50ppm to 1000ppm, the characteristic gas concentration threshold condition is met; when the increase in carbon monoxide or hydrogen concentration reaches 20% to 100% of the corresponding stable concentration within 1min to 10min, the characteristic gas concentration change threshold condition is met. If the stable concentration is lower than the sensor's stable detection lower limit, the absolute concentration increment is used for determination, where the absolute concentration increment for carbon monoxide is 10ppm to 50ppm, and the absolute concentration increment for hydrogen is 30ppm to 200ppm. The above threshold ranges are preset or adjusted according to battery type, cabin volume, ventilation conditions, and fire protection design requirements.

[0025] When correcting fire alarm determination conditions based on environmental data, the characteristic gas determination conditions are adjusted according to ambient air pressure. The preset reference pressure range is 90 kPa to 105 kPa. When the ambient air pressure is within this preset reference pressure range, the baseline characteristic gas determination conditions are used. When the ambient air pressure is below 90 kPa, the characteristic gas concentration threshold or concentration change threshold is adjusted according to a preset pressure correction level. Specifically, when the ambient air pressure is between 80 kPa and 90 kPa, the characteristic gas concentration threshold and concentration change threshold are corrected to 0.9 to 1.0 times the baseline threshold; when the ambient air pressure is between 70 kPa and 80 kPa, the characteristic gas concentration threshold and concentration change threshold are corrected to 0.8 to 0.9 times the baseline threshold; and when the ambient air pressure is below 70 kPa, the characteristic gas concentration threshold and concentration change threshold are corrected to 0.7 to 0.8 times the baseline threshold. Through these corrections, the characteristic gas determination conditions under low-pressure environments are matched to the current ambient pressure, reducing positioning errors caused by gas diffusion and changes in sampling response.

[0026] When determining the temperature rise benchmark for battery cells based on the internal temperature of the compartment, the internal temperature can be divided into low-temperature range, normal-temperature range, and high-temperature range. For example, a low-temperature temperature rise benchmark is used when the internal temperature is below 10°C, a normal-temperature temperature rise benchmark is used when the internal temperature is between 10°C and 35°C, and a high-temperature temperature rise benchmark is used when the internal temperature is above 35°C. When the internal temperature is high, a fixed temperature value is not directly used as the basis for fire alarm judgment; instead, the abnormal upward trend is judged by combining the temperature rise benchmark and the temperature rise rate. When the internal temperature is low, the temperature rise benchmark is adjusted accordingly to avoid misjudgment caused by differences in ambient temperature.

[0027] The resulting revised fire alarm determination criteria include at least revised characteristic gas determination criteria and revised temperature rise determination criteria. These criteria are used to subsequently determine the fire alarm location result based on fire alarm characteristic data, ensuring that ambient air pressure, cabin temperature, temperature rise data, temperature rise rate, and characteristic gas concentration change data all enter the same determination chain, thus avoiding fire alarm location deviations caused by fixed thresholds under different environments.

[0028] In addition, a characteristic gas sampling delay correction is introduced when determining the fire alarm location result. For energy storage chambers that collect characteristic gases through suction pipes, the sampling pipe length, suction flow rate, and sampling port location corresponding to each sampling area are first obtained to determine the gas arrival delay time for each sampling area. Then, the characteristic gas concentration change data is back-corrected according to the corresponding delay time to match the corrected gas concentration change time with the temperature rise time of the battery cell. If the difference between the temperature rise start time of a candidate battery cell and the corrected gas concentration rise start time of its corresponding sampling area is within a preset matching range, such as 5s to 60s, the candidate battery cell is retained; if it exceeds the preset matching range, its location priority is reduced or the candidate battery cell is excluded. This reduces the gas signal lag caused by different sampling pipe lengths and improves the accuracy of the correspondence between the fire alarm location result and the actual abnormal battery cell.

[0029] Step S3: Determine the fire alarm location result based on the corrected fire alarm judgment conditions and the fire alarm feature data, and send the fire alarm location result to the fire control panel, so that the fire control panel can determine the target selector valve according to the fire linkage mapping relationship.

[0030] Specifically, determining the fire alarm location result based on the revised fire alarm determination conditions and the fire alarm characteristic data includes: screening the temperature rise data and temperature rise rate of each battery unit, and determining candidate battery units when the revised temperature rise determination conditions are met; combining the characteristic gas concentration change data in the sampling area corresponding to the candidate battery unit, and determining the candidate battery unit as the battery unit corresponding to the fire alarm location result when the characteristic gas concentration change data meets the revised characteristic gas determination conditions.

[0031] Furthermore, when multiple candidate battery units meet the modified fire alarm determination conditions, the temperature rise difference and characteristic gas concentration change difference of each candidate battery unit relative to its adjacent battery units are obtained; when the temperature rise difference or characteristic gas concentration change difference of a candidate battery unit reaches a preset distinction threshold, the candidate battery unit that reaches the preset distinction threshold is determined as the battery unit corresponding to the fire alarm location result; when the temperature rise difference and characteristic gas concentration change difference of each candidate battery unit do not reach the preset distinction threshold, multiple candidate battery units are jointly determined as the battery unit corresponding to the fire alarm location result.

[0032] Furthermore, the fire alarm control panel determines the target selector valve based on the fire alarm linkage mapping relationship, including: querying the fire alarm linkage mapping relationship based on the battery unit corresponding to the fire alarm location result to obtain the address of the candidate selector valve associated with the battery unit; filtering the selector valves corresponding to the candidate selector valve addresses to select the selector valves whose pipeline coverage includes the battery unit corresponding to the fire alarm location result, and determining the selector valve with the shortest pipeline path length as the target selector valve; when the fire alarm location result corresponds to multiple battery units and there is no selector valve that covers multiple battery units at the same time, determining the selector valve corresponding to each battery unit respectively, and taking all the determined selector valves as target selector valves.

[0033] In this embodiment of the invention, based on the corrected fire alarm determination criteria obtained in step S2, the fire alarm characteristic data of each battery cell are judged one by one. First, the temperature rise data and temperature rise rate of each battery cell are screened. If the temperature rise data of a battery cell within the continuous sampling window reaches the corrected temperature rise threshold, or the temperature rise rate reaches the corrected temperature rise rate threshold, then the battery cell is determined as a candidate battery cell. The continuous sampling window is 30 seconds to 10 minutes, the corrected temperature rise threshold is 5°C to 20°C, and the corrected temperature rise rate threshold is 1°C / min to 5°C / min. For example, if battery cell B1 rises by 12°C relative to the temperature rise reference within 5 minutes, and the temperature rise rate reaches 2.4°C / min, then B1 meets the temperature rise determination criteria and enters the candidate battery cell set.

[0034] After identifying candidate battery units, the data on the changes in characteristic gas concentrations within the sampling area corresponding to each candidate battery unit are used for verification. If the changes in carbon monoxide concentration, hydrogen concentration, or both within the sampling area corresponding to a candidate battery unit meet the corrected characteristic gas determination criteria, then the candidate battery unit is identified as the battery unit corresponding to the fire alarm location result. The corrected characteristic gas determination criteria include a concentration threshold and a concentration increment threshold. The carbon monoxide concentration threshold is set between 20 ppm and 200 ppm, and the hydrogen concentration threshold is set between 50 ppm and 1000 ppm; the concentration increment threshold is an increase of 20% to 100% relative to the stable concentration within 1 to 10 minutes. For example, if the carbon monoxide concentration in the sampling area corresponding to candidate battery unit B1 increases from 20 ppm to 80 ppm within 5 minutes, then B1 meets the characteristic gas determination criteria and is identified as the battery unit corresponding to the fire alarm location result.

[0035] When multiple candidate battery units meet the revised fire alarm determination criteria, the temperature rise difference and characteristic gas concentration change difference of each candidate battery unit relative to its adjacent battery units are further compared. The temperature rise difference is the difference between the temperature rise data of the candidate battery unit and that of its adjacent battery units; the characteristic gas concentration change difference is the difference in concentration change between the sampling area corresponding to the candidate battery unit and its adjacent sampling areas. Preset distinction thresholds include a temperature rise distinction threshold and a gas distinction threshold. The temperature rise distinction threshold is set at 3℃ to 10℃, the temperature rise rate distinction threshold is set at 0.5℃ / min to 3℃ / min, the carbon monoxide concentration change distinction threshold is set at 10ppm to 50ppm, and the hydrogen concentration change distinction threshold is set at 30ppm to 200ppm. If the temperature rise difference, temperature rise rate difference, or characteristic gas concentration change difference of a candidate battery unit reaches the corresponding distinction threshold, the candidate battery unit that reaches the distinction threshold is determined as the battery unit corresponding to the fire alarm location result. If the differences between each candidate battery cell and its adjacent battery cells do not reach the distinction threshold, it indicates that the abnormal features are continuously distributed among multiple adjacent battery cells, and the multiple candidate battery cells are jointly identified as the battery cell corresponding to the fire alarm location result.

[0036] For example, if candidate battery cells B1, B2, and B3 all meet the temperature rise determination criteria, and the temperature rise difference between B2 and B1 and B3 is 6℃ and 7℃ respectively, and the carbon monoxide concentration change in the sampling area corresponding to B2 is 30ppm higher than that in the adjacent sampling areas, then B2 reaches the distinction threshold, and the fire alarm location result points to B2. If the temperature rise difference between B1, B2, and B3 is less than 3℃, and the carbon monoxide concentration change difference is less than 10ppm, then B1, B2, and B3 are all considered as the battery cells corresponding to the fire alarm location result.

[0037] After obtaining the fire alarm location result, the battery unit identifier in the fire alarm location result is sent to the fire alarm control panel. The fire alarm control panel queries the address of the candidate selector valve associated with the battery unit according to the fire linkage mapping relationship established in step S10, and selects the target selector valve from the selector valves corresponding to the candidate selector valve addresses. During the selection, it is first determined whether the coverage area of ​​the corresponding pipeline branch includes the battery unit corresponding to the fire alarm location result; among the selector valves that meet the coverage conditions, the pipeline path length from the selector valve to the corresponding battery unit's discharge position is determined according to the pipeline path information, and the selector valve with the shortest pipeline path length is determined as the target selector valve. The pipeline path length is determined according to the actual laying length corresponding to the pipeline branch identifier. For example, if the path length from pipeline branch P1 to battery unit B2 is 3m and the path length from pipeline branch P2 to B2 is 5m, then when selector valve V1 corresponds to P1, V1 is determined as the target selector valve.

[0038] When a fire alarm location result corresponds to multiple battery units, the system first checks if there exists a pipe coverage area for the same selector valve that simultaneously includes all battery units. If so, the selector valve with the shortest pipe path length among those meeting the coverage criteria is selected as the target selector valve. If no selector valve simultaneously covers multiple battery units, the system queries the address of the candidate selector valve corresponding to each battery unit and determines the target selector valve for each battery unit, resulting in one or more target selector valves. Therefore, each battery unit in the fire alarm location result can be mapped to a specific selector valve and pipe path, avoiding any gaps between the fire alarm location result and the target of fire suppression.

[0039] After a candidate battery cell meets the corrected temperature rise and characteristic gas determination conditions, the onset time of temperature rise, the time of temperature rise rate change, and the time of characteristic gas concentration increase for that candidate battery cell and its adjacent battery cells within a continuous sampling window are obtained. An abnormal propagation sequence is then formed according to the spatial arrangement of the battery cells within the energy storage compartment. If the onset time of temperature rise of a candidate battery cell is earlier than that of its adjacent battery cells, and the temperature rise or characteristic gas change of the adjacent battery cells follows a temporal order extending outward from the candidate battery cell, then that candidate battery cell is identified as the battery cell corresponding to the fire alarm location result. If the abnormal onset times of multiple candidate battery cells are close, and there is no clear propagation sequence between adjacent areas, then all multiple candidate battery cells are jointly identified as the battery cell corresponding to the fire alarm location result. By introducing an abnormal propagation direction verification, the misjudgment of adjacent areas after diffusion as the ignition source location can be avoided by relying solely on the current temperature peak or gas concentration peak, thus improving the accuracy of matching the fire alarm location result with the target selection valve.

[0040] Step S4: Control the target selection valve to open, so that the fire extinguishing medium enters the battery unit corresponding to the fire alarm location result.

[0041] Furthermore, before controlling the opening of the target selector valve, the communication status, valve position status, and pressure and connection status of the corresponding pipeline branch of the target selector valve are acquired; the communication status, valve position status, pressure status, and connection status are checked for start-up conditions; when there is only one target selector valve, the communication status is normal, the valve position status is in an openable state, and the pressure status and connection status meet the preset start-up conditions, an opening command for the target selector valve is generated; when there are multiple target selector valves, the start-up conditions of each target selector valve are checked separately, and an opening command is generated for the target selector valve that meets the preset start-up conditions.

[0042] Furthermore, after controlling the opening of the target selection valve, the system acquires the valve position feedback of the target selection valve, the pressure change of the corresponding pipeline branch, and the temperature rise and characteristic gas concentration change of the battery unit after discharge. When the valve position feedback of the target selection valve and the pressure change of the corresponding pipeline branch meet the preset discharge conditions, it is determined that the extinguishing medium has entered the corresponding battery unit. When the temperature rise and characteristic gas concentration change after discharge meet the preset suppression conditions, it is determined that the fire linkage is effective. When the extinguishing medium does not enter the corresponding battery unit, or the temperature rise and characteristic gas concentration change after discharge do not meet the preset suppression conditions, the system controls the fire control panel to switch to the backup linkage path or expand the fire linkage range.

[0043] In this embodiment of the invention, the energy storage compartment is equipped with a fire-fighting pipeline capable of directionally delivering the fire extinguishing medium. The fire extinguishing medium enters a selector valve via the main pipeline, and is then guided by the selector valve to a corresponding pipeline branch, allowing the fire extinguishing medium to reach the area where the battery unit corresponding to the fire alarm location result is located. This type of selector valve, branch pipeline, and discharge interface is a mature structure in energy storage compartment directional fire-fighting systems. This embodiment focuses on describing the method for valve selection, activation verification, and closed-loop judgment of discharge effect based on the fire alarm location result; the mechanical connection structure of the pipeline is not described in detail.

[0044] Before the target gate valve is opened, its communication status, valve position status, and the pressure and connectivity status of the corresponding pipeline branch are acquired. The communication status confirms that the opening command can reach the target gate valve; the valve position status confirms that the target gate valve is not in a fault, maintenance, or locked state; the pressure status confirms that the corresponding pipeline branch has the necessary discharge pressure; and the connectivity status confirms that the pipeline between the target gate valve and the battery unit corresponding to the fire alarm location result is in a connectable state. In embodiments using medium- and low-pressure directional discharge pipelines, the preset start-up conditions include: online communication status, closed and openable valve position status, pipeline branch pressure between 0.6 MPa and 2.5 MPa, and normal connectivity status. For energy storage compartments using other extinguishing media or other pipeline specifications, the pressure status is determined based on the design start-up pressure of the corresponding fire extinguishing system and the rated pressure of the pipeline.

[0045] When there is only one target selector valve, the activation conditions for that valve are verified. If the communication status is normal, the valve position is in an openable state, and both the pressure and connection status meet the preset activation conditions, an opening command is generated for that target selector valve, allowing the extinguishing medium to enter the battery unit corresponding to the fire alarm location result via the corresponding pipeline branch. When there are multiple target selector valves, the activation conditions for each valve are verified separately, and an opening command is generated only for target selector valves that meet the preset activation conditions. For target selector valves that do not meet the activation conditions, the anomaly is recorded and the system enters the backup linkage path selection to prevent faulty valves or abnormal pipelines from participating in the discharge.

[0046] After the target selector valve opens, the system acquires the valve position feedback, pressure changes in the corresponding pipeline branch, and temperature rise and characteristic gas concentration changes in the battery unit after discharge. Preset discharge conditions include: the target selector valve reporting full opening within 1 to 10 seconds, and the corresponding pipeline branch pressure experiencing a preset decrease or flow response within 1 to 30 seconds after opening. For example, if the pipeline branch pressure decreases to 10% to 40% of the pre-opening pressure, or if continuous discharge flow is detected in the corresponding pipeline branch, it is determined that the extinguishing medium has entered the corresponding battery unit.

[0047] After the discharge, the system continues to acquire data on the temperature rise and characteristic gas concentration changes of the battery cell corresponding to the fire alarm location results. Preset suppression conditions include: within 1 to 10 minutes after discharge, the temperature rise rate decreases to below 50% of the pre-discharge temperature rise rate, and the characteristic gas concentration increase rate involved in the fire alarm determination decreases to below 50% of the pre-discharge increase rate, or the characteristic gas concentration involved in the fire alarm determination no longer continues to rise. If the valve position feedback and pressure change meet the preset discharge conditions, and the temperature rise and characteristic gas concentration changes after discharge meet the preset suppression conditions, then the fire alarm linkage is deemed effective.

[0048] If the valve position feedback is not fully open, or the pressure change of the corresponding pipeline branch does not meet the preset discharge conditions, it is determined that the extinguishing medium has not effectively entered the corresponding battery unit, and the system switches to the backup linkage path recorded in the fire linkage mapping relationship. If the extinguishing medium has entered the corresponding battery unit, but the temperature rise and characteristic gas concentration changes after discharge do not meet the preset suppression conditions, the fire linkage range is expanded, allowing the selector valves corresponding to adjacent battery units or the upper-level fire compartment containing the battery unit to participate in the linkage.

[0049] In one specific implementation, such as Figure 2 A fire alarm linkage mapping relationship is established between the battery units and the gate valves within the energy storage compartment. This mapping relationship records the battery unit identifier, gate valve address, pipeline branch identifier, and the area covered by the corresponding pipeline, enabling subsequent fire alarm location results to be directly converted into the target gate valve.

[0050] During operation, fire alarm characteristic data for each battery cell and environmental data for the energy storage compartment are continuously acquired. Fire alarm characteristic data includes temperature rise data, temperature rise rate, and changes in carbon monoxide or hydrogen concentration within the corresponding sampling area. Environmental data includes ambient air pressure and compartment temperature. The characteristic gas determination criteria are corrected based on the ambient air pressure, and the temperature rise baseline is determined based on the compartment temperature, thereby revising the temperature rise determination criteria.

[0051] Determine if the temperature rise data or rate of temperature rise of the battery cell meets the corrected temperature rise determination criteria. If not, continue monitoring and return to the data acquisition step; if yes, identify the candidate battery cell. Next, determine if the change in characteristic gas concentration in the sampling area corresponding to the candidate battery cell meets the corrected characteristic gas determination criteria. If not, continue monitoring; if yes, determine the fire alarm location result.

[0052] After determining the fire alarm location, the target selector valve is identified based on the fire alarm linkage mapping relationship. Before opening, the communication status, valve position status, pressure status, and connection status of the corresponding pipeline branch of the target selector valve are checked to verify the activation conditions. If the activation conditions are not met, the linkage strategy is adjusted and the target selector valve is re-identified; if the activation conditions are met, an opening command is generated, the target selector valve is opened, and the extinguishing medium is released.

[0053] After the discharge, valve position feedback and pipeline pressure changes are obtained to determine if the discharge conditions are met. If not, the linkage strategy is adjusted and the target selector valve is redefined. If met, the suppression conditions are determined based on the temperature rise and characteristic gas concentration changes after discharge. If not met, the linkage range is expanded or the backup path is switched; if met, the fire alarm linkage is deemed effective.

[0054] Reference Figure 3 , Figure 3 This is a schematic diagram of the fire-fighting linkage control system for the energy storage compartment according to an embodiment of the present invention.

[0055] like Figure 3 As shown, the fire-fighting linkage control system for the energy storage compartment proposed in this embodiment of the invention includes: an initialization module, used to establish a fire-fighting linkage mapping relationship between the battery units and the selector valves in the energy storage compartment; a correction module, used to acquire fire alarm characteristic data of the battery units and environmental data of the energy storage compartment, and correct the fire alarm judgment conditions according to the environmental data; a selection module, used to determine the fire alarm location result based on the corrected fire alarm judgment conditions and the fire alarm characteristic data, and send the fire alarm location result to the fire control panel, so that the fire control panel determines the target selector valve according to the fire-fighting linkage mapping relationship; and an execution module, used to control the target selector valve to open, so that the fire extinguishing medium enters the battery unit corresponding to the fire alarm location result.

[0056] It is understood that in the description of this specification, references to terms such as "one embodiment," "another embodiment," "other embodiments," or "first embodiment to Nth embodiment," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] 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 system 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 system. 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 system that includes that element.

[0058] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A fire-fighting linkage control method for an energy storage compartment, characterized in that, The method includes the following steps: S1: Establish the fire-fighting linkage mapping relationship between the battery units in the energy storage compartment and the selector valve; S2: Obtain the fire alarm characteristic data of the battery unit and the environmental data of the energy storage compartment, and correct the fire alarm judgment conditions based on the environmental data; S3: Determine the fire alarm location result based on the corrected fire alarm judgment conditions and the fire alarm feature data, and send the fire alarm location result to the fire control panel, so that the fire control panel can determine the target selector valve according to the fire linkage mapping relationship; S4: Control the target selection valve to open, so that the fire extinguishing medium enters the battery unit corresponding to the fire alarm location result.

2. The fire-fighting linkage control method for energy storage compartments as described in claim 1, characterized in that, The establishment of a fire-fighting linkage mapping relationship between the battery units in the energy storage compartment and the selector valve includes: The system acquires information on battery unit identifiers, fire zone numbers, gate valve addresses, pipeline branch identifiers, and coverage areas of corresponding pipelines within the energy storage compartment. Based on the spatial relationships of the battery units within the energy storage compartment and the fire zone division, each battery unit is mapped to at least one gate valve and its pipeline branch capable of covering its area, forming a fire linkage mapping relationship that includes battery unit identifiers, gate valve addresses, and pipeline path information.

3. The fire-fighting linkage control method for energy storage compartments as described in claim 1, characterized in that, The fire alarm characteristic data includes the temperature rise data of the battery unit, the temperature rise rate, and the characteristic gas concentration change data in the sampling area corresponding to the battery unit; The characteristic gas is at least one of carbon monoxide and hydrogen; The environmental data includes ambient air pressure and cabin temperature.

4. The fire-fighting linkage control method for energy storage compartments as described in claim 3, characterized in that, The fire alarm determination criteria are modified based on the aforementioned environmental data, including: The temperature rise baseline of the battery cell is determined based on the ambient air pressure correction characteristic gas determination conditions and the cabin temperature. Based on the temperature rise benchmark and the temperature rise rate, the temperature rise determination conditions are modified to obtain the modified fire alarm determination conditions.

5. The fire-fighting linkage control method for energy storage compartments as described in claim 4, characterized in that, The fire alarm location result is determined based on the revised fire alarm determination criteria and the fire alarm feature data, including: The temperature rise data and temperature rise rate of each battery cell are screened, and candidate battery cells are determined when the corrected temperature rise judgment conditions are met. Based on the characteristic gas concentration change data within the sampling area corresponding to the candidate battery unit, when the characteristic gas concentration change data meets the corrected characteristic gas determination conditions, the candidate battery unit is determined as the battery unit corresponding to the fire alarm location result.

6. The fire-fighting linkage control method for energy storage compartments as described in claim 5, characterized in that, When multiple candidate battery cells meet the modified fire alarm determination conditions, the temperature rise difference and characteristic gas concentration change difference of each candidate battery cell relative to its adjacent battery cells are obtained. When the temperature rise difference or characteristic gas concentration change difference of a candidate battery cell reaches a preset discrimination threshold, the candidate battery cell that reaches the preset discrimination threshold is determined as the battery cell corresponding to the fire alarm location result. When the temperature rise difference and the characteristic gas concentration change difference of each candidate battery cell do not reach the preset differentiation threshold, multiple candidate battery cells are jointly identified as the battery cell corresponding to the fire alarm location result.

7. The fire-fighting linkage control method for energy storage compartments as described in claim 1, characterized in that, The fire alarm control panel determines the target selector valve based on the fire alarm linkage mapping relationship, including: Based on the battery unit corresponding to the fire alarm location result, query the fire linkage mapping relationship to obtain the candidate select valve address associated with the battery unit; From the selected valves corresponding to the candidate selected valve addresses, select the selected valves whose pipeline coverage includes the battery unit corresponding to the fire alarm location result, and determine the selected valve with the shortest pipeline path length as the target selected valve. When the fire alarm location result corresponds to multiple battery units and there is no gate valve that simultaneously covers multiple battery units, the gate valve corresponding to each battery unit is determined, and the determined gate valves are all used as target gate valves.

8. The fire-fighting linkage control method for energy storage compartments as described in claim 1, characterized in that, Before controlling the target gate valve to open, the communication status, valve position status, pressure status and connection status of the corresponding pipeline branch of the target gate valve are obtained; The communication status, valve position status, pressure status, and connection status are verified to meet the start-up conditions. When there is only one target selector valve, the communication status is normal, the valve position status is in an openable state, and the pressure status and connection status meet the preset start-up conditions, an opening command for the target selector valve is generated. When there are multiple target gate valves, the start-up conditions of each target gate valve are checked, and an opening command is generated for the target gate valves that meet the preset start-up conditions.

9. The fire-fighting linkage control method for energy storage compartments as described in claim 1, characterized in that, After the target gate valve is opened, the valve position feedback of the target gate valve, the pressure change of the corresponding pipeline branch, and the temperature rise and characteristic gas concentration change of the battery cell after discharge are obtained. When the valve position feedback of the target selector valve and the pressure change of the corresponding pipeline branch meet the preset discharge conditions, it is determined that the extinguishing medium enters the corresponding battery unit. When the temperature rise and characteristic gas concentration changes after the discharge meet the preset suppression conditions, the fire alarm linkage is deemed effective. If the extinguishing medium does not enter the corresponding battery unit, or if the temperature rise and characteristic gas concentration changes after discharge do not meet the preset suppression conditions, the fire control panel will switch to the backup linkage path or expand the fire linkage range.

10. A fire-fighting linkage control system for an energy storage compartment, characterized in that, The system includes: The initial module is used to establish the fire-fighting linkage mapping relationship between the battery units in the energy storage compartment and the gate valve; The correction module is used to acquire fire alarm characteristic data of the battery unit and environmental data of the energy storage compartment, and to correct the fire alarm judgment conditions based on the environmental data. The selection module is used to determine the fire alarm location result based on the modified fire alarm judgment conditions and the fire alarm feature data, and send the fire alarm location result to the fire control panel, so that the fire control panel can determine the target selector valve according to the fire linkage mapping relationship; The execution module is used to control the target selection valve to open, so that the fire extinguishing medium enters the battery unit corresponding to the fire alarm location result.

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