Multi-stage fire-fighting method, device and energy storage cabinet system for energy storage cabinet

Abstract

This invention relates to a multi-level fire suppression method, device, and system for energy storage cabinets. Upon detecting a PACK anomaly, the invention first employs a PACK-level fire suppression strategy to suppress the PACK modules within the energy storage cabinet. After suppressing the PACK modules, a second detection data is collected, and based on this data, a cluster-level fire suppression strategy is implemented to suppress the battery clusters within the energy storage cabinet. Finally, after suppressing the battery clusters, a third detection data is collected, and a cabinet-level fire suppression strategy is implemented to suppress the entire energy storage cabinet. This invention, through its tiered approach, can precisely suppress the PACK modules or battery clusters within the energy storage cabinet, avoiding excessive fire suppression that could damage the cabinet.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of energy storage technology, specifically to a multi-level fire protection method, device and energy storage cabinet system for energy storage cabinets. Background Technology

[0002] With the rapid development of the new energy industry, energy storage devices are being used more and more widely in the energy sector. Among these, an energy storage cabinet is a device specifically designed to store electrical energy. It integrates battery packs, battery management systems, power electronic conversion devices, control systems, and other necessary auxiliary equipment. The main functions of an energy storage cabinet are to store electrical energy when there is a surplus of power on the grid or sufficient renewable energy generation, and to release electrical energy when there is a shortage of power on the grid or during peak demand periods. This provides power support, balances grid load, improves energy efficiency, and serves as a backup power source.

[0003] However, the safety issues of energy storage equipment are becoming increasingly prominent, with fire protection being particularly important. In industrial and commercial energy storage cabinets, fire protection systems typically employ either package-level or cabinet-level protection. Package-level protection involves installing fire detectors on each PACK, triggering fire suppression upon alarm. Cabinet-level protection involves installing fire detectors on the top of the energy storage cabinet, activating fire suppression upon alarm. However, fire suppression typically involves the entire energy storage cabinet, which is not precise enough and can affect the normal operation of other safe PACK modules or cluster-level modules. Summary of the Invention

[0004] In view of the above problems, this invention provides a multi-level fire protection method, device and system for energy storage cabinets, which solves the problem that in the prior art, when fire protection of energy storage cabinets is carried out by directly treating the entire energy storage cabinet, the fire protection is not precise enough and affects the normal use of other safe PACK modules or cluster-level modules.

[0005] According to one aspect of the present invention, a multi-level fire suppression method for an energy storage cabinet is provided, applied to an energy storage cabinet having at least one battery cluster, the battery cluster having at least one PACK module, the method comprising:

[0006] Acquire first detection data, wherein the first detection data is the first pressure value and / or the first temperature value of the PACK module or battery cell in the energy storage cabinet;

[0007] Based on the first detection data, determine whether the PACK module is abnormal. If so, mark the PACK module as an abnormal PACK module and execute the PACK-level fire protection strategy to fire the energy storage cabinet. After the fire protection is completed, obtain the second detection data.

[0008] Based on the second detection data, determine whether the battery cluster is abnormal. If so, mark the battery cluster as an abnormal battery cluster, execute the cluster-level fire protection strategy to fire the energy storage cabinet, and obtain the third detection data after the fire protection is completed.

[0009] Based on the third detection data, it is determined whether the energy storage cabinet is abnormal. If so, the battery cluster is marked as an abnormal energy storage cabinet, and the cabinet-level fire protection strategy is executed to fire the energy storage cabinet.

[0010] In some optional embodiments, based on the first detection data, it is determined whether the PACK module is abnormal. If so, the PACK module is marked as an abnormal PACK module, and a PACK-level fire suppression strategy is executed to fire the energy storage cabinet, specifically including:

[0011] If the first pressure value exceeds the preset first pressure setting value and / or if the first temperature value exceeds the preset first temperature setting value, the PACK module will be marked as an abnormal PACK module; otherwise, the current state of the PACK module is normal.

[0012] When a PACK module is marked as an abnormal PACK module, fire suppression is initiated through the first fire extinguishing device built into the PACK module.

[0013] In some optional embodiments, the second detection data is the detection data of the abnormal PACK module or the detection data of the battery cluster where the abnormal PACK module is located, and the second detection data includes a second pressure value and / or a second temperature value.

[0014] In some optional embodiments, based on the second detection data, it is determined whether the battery cluster is abnormal. If so, the battery cluster is marked as abnormal, and a cluster-level fire suppression strategy is executed to fire the energy storage cabinet. Specifically, this includes:

[0015] If the second pressure value exceeds the preset second pressure setting value and / or if the second temperature value exceeds the preset second temperature setting value, the battery cluster will be marked as an abnormal battery cluster; otherwise, the current state of the battery cluster is normal.

[0016] When a battery cluster is marked as an abnormal battery cluster, a cluster-level fire protection strategy is applied to the battery cluster for graded fire protection based on the difference between the second pressure value and the second pressure set value and / or the difference between the second temperature value and the second temperature set value.

[0017] In some optional embodiments, the step of implementing a cluster-level fire suppression strategy for the battery cluster based on the difference between the second pressure value and the second pressure setpoint and / or the difference between the second temperature value and the second temperature setpoint includes:

[0018] If the difference between the second pressure value and the second pressure set value is within the first pressure range and / or the difference between the second temperature value and the second temperature set value is within the first temperature range, then the abnormal PACK module is cooled by the fire-fighting fan and liquid cooling unit in the battery cluster.

[0019] If the difference between the second pressure value and the second pressure setting value is within the second pressure range and / or the difference between the second temperature value and the second temperature setting value is within the second temperature range, then the abnormal PACK module is atomized and sprayed through the nozzles and partition valves in the battery cluster.

[0020] If the difference between the second pressure value and the second pressure set value exceeds the second pressure range and / or the difference between the second temperature value and the second temperature set value exceeds the second temperature range, the fire extinguishing device will be activated to extinguish the fire in the entire abnormal battery cluster.

[0021] In some optional embodiments, the third detection data is the detection data of abnormal battery clusters or the detection data of energy storage cabinets, and the third detection data includes a third pressure value and / or a third temperature value.

[0022] In some optional embodiments, based on the third detection data, it is determined whether the energy storage cabinet is abnormal. If so, the energy storage cabinet is marked as an abnormal energy storage cabinet, and a cabinet-level fire protection strategy is executed to fire the energy storage cabinet, specifically including:

[0023] If the third pressure value exceeds the preset third pressure setting value and / or if the third temperature value exceeds the preset third temperature setting value, the energy storage cabinet will be marked as an abnormal energy storage cabinet; otherwise, the current state of the energy storage cabinet is normal.

[0024] When an energy storage cabinet is marked as an abnormal energy storage cabinet, a cabinet-level fire protection strategy is implemented to classify the fire protection based on the difference between the third pressure value and the third pressure setting value and / or the difference between the third temperature value and the third temperature setting value.

[0025] In some optional embodiments, the step of implementing a cabinet-level fire protection strategy for the energy storage cabinet based on the difference between the third pressure value and the third pressure setpoint and / or the difference between the third temperature value and the third temperature setpoint specifically includes:

[0026] If the difference between the third pressure value and the third pressure set value is within the third pressure range and / or the difference between the third temperature value and the third temperature set value is within the third temperature range, then the abnormal battery clusters will be cooled by the fire-fighting fan and liquid cooling unit in the energy storage cabinet.

[0027] If the difference between the third pressure value and the third pressure set value is within the fourth pressure range and / or the difference between the third temperature value and the third temperature set value is within the fourth temperature range, the fire extinguishing device will be activated to extinguish the abnormal battery cluster in the energy storage cabinet.

[0028] If the difference between the third pressure value and the third pressure setting value exceeds the fourth pressure range value, and / or the difference between the third temperature value and the third temperature setting value exceeds the fourth temperature range, the fire extinguishing device will be activated to extinguish the fire in the entire energy storage cabinet.

[0029] According to another aspect of the present invention, a multi-level fire suppression system for energy storage cabinets is provided, the system comprising:

[0030] The first fire protection module is used to acquire first detection data, wherein the first detection data is the first pressure value and / or the first temperature value of the PACK module or battery cell in the energy storage cabinet; based on the first detection data, it is determined whether the PACK module is abnormal; if so, the PACK module is marked as an abnormal PACK module, and the PACK-level fire protection strategy is executed to fire the energy storage cabinet.

[0031] The second fire protection module is used to acquire the second detection data and determine whether the battery cluster is abnormal based on the second detection data. If so, the battery cluster is marked as an abnormal battery cluster and the cluster-level fire protection strategy is executed to fire the energy storage cabinet.

[0032] The third fire protection module is used to acquire third detection data and determine whether the energy storage cabinet is abnormal based on the third detection data. If so, the battery cluster is marked as an abnormal energy storage cabinet, and the cabinet-level fire protection strategy is executed to fire the energy storage cabinet.

[0033] The main control module is used to connect with the first fire protection module, the second fire protection module and the third fire protection module to perform hierarchical fire protection control of the energy storage cabinet.

[0034] According to another aspect of the present invention, an energy storage cabinet system is provided, including: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other through the communication bus;

[0035] The memory is used to store at least one executable instruction that causes the processor to perform operations such as the multi-level fire protection method for energy storage cabinets described above.

[0036] This invention provides a multi-level fire suppression method, device, and system for energy storage cabinets. Its advantages are as follows: Upon detecting a PACK anomaly, the invention first uses a PACK-level fire suppression strategy to suppress the PACK modules within the energy storage cabinet. After suppressing the PACK modules, a second detection data is collected, and based on this data, a cluster-level fire suppression strategy is applied to the battery clusters within the energy storage cabinet. After suppressing the battery clusters, a third detection data is collected, and a cabinet-level fire suppression strategy is applied to the entire energy storage cabinet. This tiered approach allows for precise fire suppression of PACK modules or battery clusters within the energy storage cabinet, avoiding excessive fire suppression that could damage the cabinet.

[0037] The above description is merely an overview of the technical solutions of this invention. In order to better understand the technical means of the embodiments of this invention, it can be implemented in accordance with the contents of the specification. Furthermore, in order to make the above and other objects, features and advantages of the embodiments of this invention more apparent and understandable, specific embodiments of this invention are described below. Attached Figure Description

[0038] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0039] Figure 1 A flowchart illustrating the multi-level fire suppression method for energy storage cabinets according to Embodiment 1 of the present invention is shown.

[0040] Figure 2 This invention provides a schematic diagram of the structure of a multi-stage fire suppression system for an energy storage cabinet according to Embodiment 2.

[0041] Figure 3 A schematic diagram of the energy storage cabinet system according to Embodiment 3 of the present invention is shown. Detailed Implementation

[0042] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0043] Example 1:

[0044] Figure 1 This invention illustrates a multi-level fire suppression method for an energy storage cabinet, applied to an energy storage cabinet having at least one battery cluster, the battery cluster having at least one PACK module. The method includes:

[0045] 110. Acquire first detection data, wherein the first detection data is the first pressure value and / or first temperature value of the PACK module or battery cell in the energy storage cabinet; in step 110, a monitoring module can be set inside the individual battery cell or the battery module, the monitoring module including a pressure sensor and a temperature sensor, for monitoring the first pressure value and first temperature value of the individual cell or battery module. The first pressure value and first temperature value are then transmitted to the Battery Management System (BMS) of the energy storage cabinet for data processing.

[0046] 120. Based on the first detection data, determine whether the PACK module is abnormal. If so, mark the PACK module as abnormal and execute the PACK-level fire suppression strategy to extinguish the fire in the energy storage cabinet. After the fire suppression is completed, obtain the second detection data. In step 120, if the first pressure value exceeds the preset first pressure setting value and / or if the first temperature value exceeds the preset first temperature setting value, mark the PACK module as abnormal; otherwise, the current state of the PACK module is normal. When the PACK module is marked as abnormal, fire suppression is performed using the first fire extinguishing device built into the PACK module. The second detection data is the detection data of the abnormal PACK module or the detection data of the battery cluster where the abnormal PACK module is located. The second detection data includes the second pressure value and / or the second temperature value.

[0047] 130. Based on the second detection data, determine whether the battery cluster is abnormal. If so, mark the battery cluster as abnormal and execute a cluster-level fire suppression strategy to extinguish the fire in the energy storage cabinet. After the fire suppression is completed, obtain the third detection data. In step 130, if the second pressure value exceeds the preset second pressure setting value and / or if the second temperature value exceeds the preset second temperature setting value, the battery cluster is marked as abnormal; otherwise, the current state of the battery cluster is normal. When the battery cluster is marked as abnormal, a cluster-level fire suppression strategy is applied to the battery cluster based on the difference between the second pressure value and the second pressure setting value and / or the difference between the second temperature value and the second temperature setting value. The third detection data is the detection data of the abnormal battery cluster or the detection data of the energy storage cabinet, and the third detection data includes the third pressure value and / or the third temperature value.

[0048] 140. Based on the third detection data, determine whether the energy storage cabinet is abnormal. If so, mark the battery cluster as an abnormal energy storage cabinet and execute the cabinet-level fire suppression strategy to fire the energy storage cabinet. In step 140, if the third pressure value exceeds the preset third pressure setting value and / or if the third temperature value exceeds the preset third temperature setting value, the energy storage cabinet is marked as an abnormal energy storage cabinet; otherwise, the current state of the energy storage cabinet is normal. When the energy storage cabinet is marked as an abnormal energy storage cabinet, the cabinet-level fire suppression strategy is applied to the energy storage cabinet for graded fire suppression based on the difference between the third pressure value and the third pressure setting value and / or the difference between the third temperature value and the third temperature setting value.

[0049] This invention, upon detecting a PACK anomaly, first employs a PACK-level fire suppression strategy to fire the PACK modules within the energy storage cabinet. After fire suppression of the PACK modules, it then detects a second set of data and, based on this data, fires the battery clusters within the cabinet using a cluster-level fire suppression strategy. Finally, after fire suppression of the battery clusters, it detects a third set of data and fires the entire energy storage cabinet using a cabinet-level fire suppression strategy. This tiered approach allows for precise fire suppression of either the PACK modules or battery clusters within the energy storage cabinet, preventing damage caused by excessive fire suppression.

[0050] In step 120, based on the first detection data, it is determined whether the PACK module is abnormal. If so, the PACK module is marked as abnormal, and a PACK-level fire suppression strategy is executed to extinguish the fire in the energy storage cabinet. Specifically, this includes: if the first pressure value exceeds a preset first pressure setting value and / or if the first temperature value exceeds a preset first temperature setting value, the PACK module is marked as abnormal; otherwise, the current state of the PACK module is normal. When the PACK module is marked as abnormal, fire suppression is performed using the first fire extinguishing device built into the PACK module. The first pressure setting value and the first temperature setting value are stored in the register of the PACK module's battery management chip and are used for comparison with the first pressure value and the first temperature value.

[0051] In this embodiment, different levels of warnings can be issued based on the magnitude of the first pressure value and the first temperature value. In a specific example, the PACK module is given a graded warning based on the first pressure value and the first temperature value, specifically including: a Level 1 alarm is issued when the first pressure value is greater than or equal to the first pressure warning value and the first temperature value is within the range of the first temperature warning value; a Level 2 alarm is issued when the first pressure value is greater than or equal to the second pressure warning value and the first temperature value is within the range of the second temperature warning value, and the duration is greater than or equal to a first preset time; a Level 3 alarm is issued when the first pressure value is greater than or equal to the third pressure warning value and the first temperature value is within the range of the third temperature warning value, and the duration is greater than or equal to a second preset time; and a Level 4 alarm is issued when the first pressure value is greater than or equal to the fourth pressure warning value and the first temperature value is within the range of the fourth temperature warning value, or when both the first pressure value is greater than or equal to the third pressure warning value and the first temperature value is within the range of the third temperature warning value, and the duration is greater than or equal to a third preset time.

[0052] The alarm level 1 is an internal warning, while levels 2, 3, and 4 involve uploading the alarm level information from the PACK module to the fire suppression control unit for processing. This fire detector has a four-level warning function, with each level corresponding to the incubation period, warning period, alarm period, and open flame period in the development of a thermal runaway fire. Based on the alarm level, the alarm information output by the PACK module can be processed through the BMS system. The BMS sends a designated puncture valve opening signal to the fire suppression control unit, which then activates the designated puncture valve via the I / O module, activating the fire extinguisher and providing PACK-level protection. The valve in this case refers to the valve on the fire extinguisher.

[0053] In this embodiment, after the PACK-level protection strategy for the PACK module is completed, the cell pressure value or cell temperature value of the PACK module can be acquired as the second detection data. Alternatively, the temperature or pressure value outside each PACK module can be detected by the detection module of the battery cluster as the second detection data, providing a basis for the energy storage cabinet to perform cluster-level fire protection. The second detection data includes a second pressure value and / or a second temperature value.

[0054] In step 130, based on the second detection data, it is determined whether the battery cluster is abnormal. If so, the battery cluster is marked as abnormal, and a cluster-level fire suppression strategy is executed to fire the energy storage cabinet. Specifically, this includes:

[0055] If the second pressure value exceeds the preset second pressure setting value and / or if the second temperature value exceeds the preset second temperature setting value, the battery cluster will be marked as an abnormal battery cluster; otherwise, the current state of the battery cluster is normal.

[0056] When a battery cluster is marked as an abnormal battery cluster, a cluster-level fire protection strategy is applied to the battery cluster for graded fire protection based on the difference between the second pressure value and the second pressure set value and / or the difference between the second temperature value and the second temperature set value.

[0057] In a specific example, a cluster-level fire suppression strategy is implemented for battery clusters to provide graded fire protection. This invention's cluster-level fire suppression strategy has a three-level graded response, enabling precise fire suppression in the event of battery thermal runaway through a multi-level fire suppression system, including:

[0058] In the first stage, based on the difference between the second pressure value and the second pressure setpoint within the first pressure range, and / or the difference between the second temperature value and the second temperature setpoint within the first temperature range, the abnormal PACK module is cooled by the fire-fighting fan and liquid cooling unit in the battery cluster. Specifically, for minor alarm abnormalities, local cooling and ventilation measures are activated. When the detector collects information and sends it to the BMS, the BMS records the location of the abnormal information collection point. The EMS issues a command, and the fire-fighting fan and liquid cooling unit adjust the temperature control strategy for the abnormal PACK to reduce its temperature.

[0059] The second level involves atomizing the abnormal PACK module through nozzles and zone valves based on the difference between the second pressure value and the second pressure set value when the pressure is within the second pressure range and / or the difference between the second temperature value and the second temperature set value when the temperature is within the second temperature range. Specifically, if the alarm level is significantly abnormal, the corresponding PACK's local fire suppression system is activated. The PACK is equipped with nozzles and zone valves for precise control. The fire control panel controls the fire suppression system, atomizing the PACK through the nozzles for efficient fire suppression.

[0060] Level 3: When the difference between the second pressure value and the second pressure setpoint exceeds the second pressure range and / or the difference between the second temperature value and the second temperature setpoint exceeds the second temperature range, the fire extinguishing device is activated to extinguish the fire in the entire abnormal battery cluster. Specifically, if the alarm level is severely abnormal, the entire cluster-level fire suppression system is activated, and the faulty PACK is isolated. After the energy storage battery produces an open flame, the PACK's external fire suppression system quickly sprays highly effective fire extinguishing agents to extinguish the battery flame and prevent the flame from spreading to nearby lithium batteries, causing greater damage. The fire control panel controls the fire extinguishing device, puncturing the valve to release the fire extinguishing agent inside the external cabinet. Measures to isolate the faulty PACK: Cut off the thermal runaway power supply and continuously cool the abnormal battery. Energy storage lithium battery fires have a unique reaction; heat continues to accumulate inside the battery. Even if the open flame is extinguished, a reaction and heat can still be generated under anaerobic conditions, making it prone to reignition after extinguishing. While extinguishing the open flame, the thermal runaway power supply is cut off, and the temperature control system is activated to cool the battery, preventing the internal separator from continuing to decompose and break down, interrupting the internal thermal runaway chain, and preventing the open flame from reigniting.

[0061] This invention combines individual cell pressure and temperature to achieve system early warning. The BMS system can monitor, collect, and analyze the pressure data of cells within each PACK in real time, accurately assessing and predicting the battery's health status, consistency, and lifespan. When the local fire suppression device of a PACK cannot resolve the anomaly, the BMS system links with the fire suppression system to automatically disconnect the electrical connection of the faulty PACK, preventing further deterioration. The EMS sends a designated signal to the fire control panel to activate the fire extinguishers for cluster-level protection. The second pressure setpoint, second temperature setpoint, first temperature range value, first pressure range value, second temperature range value, and second pressure range value are stored in the registers of the battery cluster or energy storage cabinet's battery management chip, used for comparison with the second pressure value and second temperature value.

[0062] In some optional embodiments, after the cluster-level protection strategy for the battery cluster is completed, the third detection data is the detection data of the abnormal battery cluster, the detection data of the energy storage cabinet, or the detection data of the PACK module. The third detection data includes a third pressure value and / or a third temperature value.

[0063] In step 140, based on the third detection data, it is determined whether the energy storage cabinet is abnormal. If so, the energy storage cabinet is marked as abnormal, and a cabinet-level fire protection strategy is implemented to fire the energy storage cabinet, specifically including:

[0064] If the third pressure value exceeds the preset third pressure setting value and / or if the third temperature value exceeds the preset third temperature setting value, the energy storage cabinet will be marked as an abnormal energy storage cabinet; otherwise, the current status of the energy storage cabinet is normal.

[0065] When an energy storage cabinet is marked as an abnormal energy storage cabinet, a cabinet-level fire protection strategy is implemented to classify the fire protection based on the difference between the third pressure value and the third pressure setting value and / or the difference between the third temperature value and the third temperature setting value.

[0066] In a specific example, based on the difference between the third pressure value and the third pressure setpoint and / or the difference between the third temperature value and the third temperature setpoint, a cabinet-level fire protection strategy is implemented for the energy storage cabinet, specifically including:

[0067] In the first stage, when the difference between the third pressure value and the third pressure setpoint falls within the third pressure range, and / or the difference between the third temperature value and the third temperature setpoint falls within the third temperature range, the fire-fighting fan and liquid cooling unit in the energy storage cabinet will cool down the abnormal battery cluster. Specifically, for minor alarm abnormalities, local cooling and ventilation measures will be activated. When the detector collects information and sends it to the BMS, the BMS records the location of the abnormal information collection point. The EMS issues instructions, and the fire-fighting fan and liquid cooling unit adjust the temperature control strategy for the abnormal PACK to reduce the temperature of the abnormal PACK.

[0068] At the second level, if the difference between the third pressure value and the third pressure setpoint falls within the fourth pressure range, and / or the difference between the third temperature value and the third temperature setpoint falls within the fourth temperature range, the fire extinguishing device will be activated to extinguish the abnormal battery clusters in the energy storage cabinet. Specifically, if the alarm level is significantly abnormal, the corresponding cluster-level local fire extinguishing device will be activated. After an open flame appears in the energy storage battery, the cluster's fire suppression system will quickly spray highly efficient fire extinguishing agents to extinguish the battery flame, prevent the flame from spreading to nearby lithium batteries, and disconnect the electrical connection of the faulty PACK.

[0069] At the third level, if the difference between the third pressure value and the third pressure setpoint exceeds the fourth pressure range value, and / or the difference between the third temperature value and the third temperature setpoint exceeds the fourth temperature range, the fire extinguishing device will be activated to extinguish the fire throughout the entire energy storage cabinet. Specifically, if the alarm level is severely abnormal, the entire cabinet-level fire suppression system will be activated, releasing high-pressure gas extinguishing agent and initiating the smoke extraction and pressure relief systems. All electrical connections to the corresponding cluster-level units experiencing the abnormality will be disconnected to prevent further fire escalation. The third pressure setpoint, third temperature setpoint, third temperature range value, third pressure range value, fourth temperature range value, and fourth pressure range value are stored in the registers of the energy storage cabinet's battery management chip and used for comparison with the third pressure value and third temperature value.

[0070] This invention combines traditional temperature monitoring with the highest pressure of individual battery cells to achieve system early warning. The BMS system can monitor, collect, and analyze the voltage, current, temperature, and pressure data of the cells in each PACK in real time, accurately assessing and predicting the battery's health status, consistency, and lifespan. When cluster-level protection fails to resolve the anomaly, the central control system and BMS system work together to automatically disconnect all electrical connections to prevent further deterioration. The entire cabinet-level fire suppression system is activated, releasing high-pressure gas extinguishing agent and initiating the smoke extraction and pressure relief systems.

[0071] Example 2:

[0072] Figure 2 The present invention illustrates a multi-level fire protection device 200 for an energy storage cabinet, which includes a first fire protection module 210, a second fire protection module 220, a third fire protection module 230, and a main control module 240.

[0073] The first fire suppression module 210 is used to acquire first detection data, wherein the first detection data is the first pressure value and / or the first temperature value of the PACK module or battery cell in the energy storage cabinet; based on the first detection data, it determines whether the PACK module is abnormal. If so, the PACK module is marked as an abnormal PACK module, and a PACK-level fire suppression strategy is executed to extinguish the fire in the energy storage cabinet; the first fire suppression module 210 specifically includes: setting a monitoring module inside the individual battery cell or the battery module, the monitoring module including a pressure sensor and a temperature sensor, for monitoring the first pressure value and the first temperature value of the individual cell or battery module. The first pressure value and the first temperature value are transmitted to the battery management system (BMS) of the energy storage cabinet for data processing. When the first pressure value exceeds a preset first pressure setting value and / or when the first temperature value exceeds a preset first temperature setting value, the PACK module is marked as an abnormal PACK module; otherwise, the current state of the PACK module is normal; when the PACK module is marked as an abnormal PACK module, fire suppression is performed through the first fire extinguishing device built into the PACK module.

[0074] The second fire suppression module 220 is used to acquire second detection data. Based on the second detection data, it determines whether the battery cluster is abnormal. If so, the battery cluster is marked as abnormal, and a cluster-level fire suppression strategy is executed to fire the energy storage cabinet. Specifically, the second fire suppression module 220 includes: the second detection data being the detection data of the abnormal PACK module or the detection data of the battery cluster containing the abnormal PACK module; the second detection data includes a second pressure value and / or a second temperature value. When the second pressure value exceeds a preset second pressure setting value and / or when the second temperature value exceeds a preset second temperature setting value, the battery cluster is marked as abnormal; otherwise, the current state of the battery cluster is normal. When a battery cluster is marked as abnormal, a cluster-level fire suppression strategy is applied to the battery cluster based on the difference between the second pressure value and the second pressure setting value and / or the difference between the second temperature value and the second temperature setting value. The third detection data is the detection data of the abnormal battery cluster or the detection data of the energy storage cabinet; the third detection data includes a third pressure value and / or a third temperature value.

[0075] The third fire protection module 230 is used to acquire third detection data and determine whether the energy storage cabinet is abnormal based on the third detection data. If so, the battery cluster is marked as an abnormal energy storage cabinet, and a cabinet-level fire protection strategy is executed to fire the energy storage cabinet. The third fire protection module 230 specifically includes: when the third pressure value exceeds the preset third pressure setting value and / or when the third temperature value exceeds the preset third temperature setting value, the energy storage cabinet is marked as an abnormal energy storage cabinet; otherwise, the current state of the energy storage cabinet is normal. When the energy storage cabinet is marked as an abnormal energy storage cabinet, the cabinet-level fire protection strategy is used to perform graded fire protection based on the difference between the third pressure value and the third pressure setting value and / or the difference between the third temperature value and the third temperature setting value.

[0076] The main control module 240 connects to the first, second, and third fire suppression modules to provide tiered fire control for the energy storage cabinets. Specifically, the main control module 240 sequentially fires the energy storage cabinets experiencing anomalies according to PACK-level, cluster-level, and cabinet-level fire suppression strategies. This tiered approach allows for precise fire suppression of the PACK modules or battery clusters within the energy storage cabinets, preventing damage from excessive fire suppression.

[0077] Example 3:

[0078] Figure 3 The diagram shows a structural schematic of an embodiment of the energy storage cabinet system of the present invention. The specific embodiments of the present invention do not limit the specific implementation of the energy storage cabinet system.

[0079] like Figure 3 As shown, the energy storage cabinet system may include: a processor, a communications interface, a memory, and a communication bus.

[0080] The processor 310, communication interface 340, and memory 320 communicate with each other via communication bus 330. The communication interface is used to communicate with other network elements such as clients or other servers. The processor executes program 350, specifically performing the relevant steps described in the embodiment of the vehicle-mounted key storage method.

[0081] Specifically, a program may include program code, which includes computer-executable instructions.

[0082] The processor may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present invention. The energy storage cabinet system includes one or more processors, which may be of the same type, such as one or more CPUs; or they may be of different types, such as one or more CPUs and one or more ASICs.

[0083] Memory is used to store programs. Memory may include high-speed RAM, and may also include non-volatile memory, such as at least one disk drive.

[0084] The program can be called by the processor to enable the energy storage cabinet system to execute. Figure 1 The following steps are included in Example 1:

[0085] 110. Acquire first detection data, wherein the first detection data is the first pressure value and / or the first temperature value of the PACK module or battery cell in the energy storage cabinet;

[0086] 120. Based on the first detection data, determine whether the PACK module is abnormal. If so, mark the PACK module as an abnormal PACK module and execute the PACK-level fire protection strategy to fire the energy storage cabinet. After the fire protection is completed, obtain the second detection data.

[0087] 130. Based on the second detection data, determine whether the battery cluster is abnormal. If so, mark the battery cluster as an abnormal battery cluster, execute the cluster-level fire protection strategy to fire the energy storage cabinet, and obtain the third detection data after the fire protection is completed.

[0088] 140. Based on the third detection data, determine whether the energy storage cabinet is abnormal. If so, mark the battery cluster as an abnormal energy storage cabinet and execute the cabinet-level fire protection strategy to fire the energy storage cabinet.

[0089] This invention, upon detecting a PACK anomaly, first employs a PACK-level fire suppression strategy to fire the PACK modules within the energy storage cabinet. After fire suppression of the PACK modules, it then detects a second set of data and, based on this data, fires the battery clusters within the cabinet using a cluster-level fire suppression strategy. Finally, after fire suppression of the battery clusters, it detects a third set of data and fires the entire energy storage cabinet using a cabinet-level fire suppression strategy. This tiered approach allows for precise fire suppression of either the PACK modules or battery clusters within the energy storage cabinet, preventing damage caused by excessive fire suppression.

[0090] The algorithms or displays provided herein are not inherently related to any particular computer, virtual system, or other device. Furthermore, the embodiments of this invention are not directed to any particular programming language.

[0091] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. Similarly, for the sake of brevity and to aid in understanding one or more aspects of the invention, in the description of exemplary embodiments of the invention above, various features of the embodiments are sometimes grouped together in a single embodiment, figure, or description thereof. The claims, which follow the detailed description, are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0092] Those skilled in the art will understand that the modules in the device of the embodiment can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiment can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components, except that at least some of such features and / or processes or units are mutually exclusive.

[0093] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be construed as limiting the order of execution.

Claims

1. A multi-level fire protection method for an energy storage cabinet, characterized in that, The method, applied in an energy storage cabinet having at least one battery cluster having at least one PACK module, comprises: Acquire first detection data, wherein the first detection data is the first pressure value and / or the first temperature value of the PACK module or battery cell in the energy storage cabinet; Based on the first detection data, determine whether the PACK module is abnormal. If so, mark the PACK module as an abnormal PACK module and execute the PACK-level fire protection strategy to fire the energy storage cabinet. After the fire protection is completed, obtain the second detection data. Based on the second detection data, determine whether the battery cluster is abnormal. If so, mark the battery cluster as an abnormal battery cluster, execute the cluster-level fire protection strategy to fire the energy storage cabinet, and obtain the third detection data after the fire protection is completed. Based on the third detection data, it is determined whether the energy storage cabinet is abnormal. If so, the battery cluster is marked as an abnormal energy storage cabinet, and the cabinet-level fire protection strategy is executed to fire the energy storage cabinet. The second detection data is the detection data of the abnormal PACK module or the detection data of the battery cluster where the abnormal PACK module is located. The second detection data includes a second pressure value and / or a second temperature value. When the second pressure value exceeds a preset second pressure setting value and / or when the second temperature value exceeds a preset second temperature setting value, the battery cluster is marked as an abnormal battery cluster. Otherwise, the current state of the battery cluster is normal. When the battery cluster is marked as an abnormal battery cluster, the battery cluster is subjected to a cluster-level fire protection strategy for graded fire protection based on the difference between the second pressure value and the second pressure setting value and / or the difference between the second temperature value and the second temperature setting value.

2. The multi-level fire protection method for energy storage cabinets according to claim 1, characterized in that, Based on the first detection data, determine whether the PACK module is abnormal. If so, mark the PACK module as an abnormal PACK module and execute the PACK-level fire protection strategy to fire the energy storage cabinet, specifically including: If the first pressure value exceeds the preset first pressure setting value and / or if the first temperature value exceeds the preset first temperature setting value, the PACK module will be marked as an abnormal PACK module; otherwise, the current state of the PACK module is normal. When a PACK module is marked as an abnormal PACK module, fire suppression is initiated through the first fire extinguishing device built into the PACK module.

3. The multi-level fire protection method for energy storage cabinets according to claim 2, characterized in that, The step of implementing a cluster-level fire suppression strategy for battery clusters based on the difference between the second pressure value and the second pressure setpoint and / or the difference between the second temperature value and the second temperature setpoint includes: If the difference between the second pressure value and the second pressure set value is within the first pressure range and / or the difference between the second temperature value and the second temperature set value is within the first temperature range, then the abnormal PACK module is cooled by the fire-fighting fan and liquid cooling unit in the battery cluster. If the difference between the second pressure value and the second pressure setting value is within the second pressure range and / or the difference between the second temperature value and the second temperature setting value is within the second temperature range, then the abnormal PACK module is atomized and sprayed through the nozzles and partition valves in the battery cluster. If the difference between the second pressure value and the second pressure set value exceeds the second pressure range and / or the difference between the second temperature value and the second temperature set value exceeds the second temperature range, the fire extinguishing device will be activated to extinguish the fire in the entire abnormal battery cluster.

4. The multi-level fire protection method for energy storage cabinets according to claim 2, characterized in that, The third detection data is the detection data of abnormal battery clusters or the detection data of energy storage cabinets, and the third detection data includes a third pressure value and / or a third temperature value.

5. The multi-level fire protection method for energy storage cabinets according to claim 4, characterized in that, Based on the third detection data, it is determined whether the energy storage cabinet is abnormal. If so, the energy storage cabinet is marked as abnormal, and a cabinet-level fire protection strategy is implemented to fire the energy storage cabinet, specifically including: If the third pressure value exceeds the preset third pressure setting value and / or if the third temperature value exceeds the preset third temperature setting value, the energy storage cabinet will be marked as an abnormal energy storage cabinet; otherwise, the current state of the energy storage cabinet is normal. When an energy storage cabinet is marked as an abnormal energy storage cabinet, a cabinet-level fire protection strategy is implemented to classify the fire protection based on the difference between the third pressure value and the third pressure setting value and / or the difference between the third temperature value and the third temperature setting value.

6. The multi-level fire protection method for energy storage cabinets according to claim 5, characterized in that, The method of implementing a cabinet-level fire protection strategy for the energy storage cabinet based on the difference between the third pressure value and the third pressure setpoint and / or the difference between the third temperature value and the third temperature setpoint, specifically includes: If the difference between the third pressure value and the third pressure set value is within the third pressure range and / or the difference between the third temperature value and the third temperature set value is within the third temperature range, then the abnormal battery clusters will be cooled by the fire-fighting fan and liquid cooling unit in the energy storage cabinet. If the difference between the third pressure value and the third pressure set value is within the fourth pressure range and / or the difference between the third temperature value and the third temperature set value is within the fourth temperature range, the fire extinguishing device will be activated to extinguish the abnormal battery cluster in the energy storage cabinet. If the difference between the third pressure value and the third pressure setting value exceeds the fourth pressure range value, and / or the difference between the third temperature value and the third temperature setting value exceeds the fourth temperature range, the fire extinguishing device will be activated to extinguish the fire in the entire energy storage cabinet.

7. A multi-stage fire suppression system for an energy storage cabinet, characterized in that, The device includes: The first fire protection module is used to acquire first detection data, wherein the first detection data is the first pressure value and / or the first temperature value of the PACK module or battery cell in the energy storage cabinet; based on the first detection data, it is determined whether the PACK module is abnormal; if so, the PACK module is marked as an abnormal PACK module, and the PACK-level fire protection strategy is executed to fire the energy storage cabinet. The second fire protection module is used to acquire the second detection data and determine whether the battery clusters in the energy storage cabinet are abnormal based on the second detection data. If so, the battery clusters are marked as abnormal battery clusters, and the cluster-level fire protection strategy is executed to fire the energy storage cabinet. The third fire protection module is used to acquire third detection data and determine whether the energy storage cabinet is abnormal based on the third detection data. If so, the battery cluster is marked as an abnormal energy storage cabinet, and the cabinet-level fire protection strategy is executed to fire the energy storage cabinet. The main control module is used to connect with the first fire protection module, the second fire protection module and the third fire protection module to perform hierarchical fire protection control of the energy storage cabinet.

8. An energy storage cabinet system, characterized in that, include: The processor, memory, communication interface, and communication bus are provided, wherein the processor, memory, and communication interface communicate with each other via the communication bus. The memory is used to store at least one executable instruction, which causes the processor to perform the operation of the multi-level fire protection method for the energy storage cabinet as described in any one of claims 1-6.

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