Fire-fighting management method and system for energy storage cabinet

Abstract

The invention relates to the technical field of energy storage cabinet fire protection, and provides an energy storage cabinet fire protection management method and system, and the method comprises the steps: S1, obtaining the package-level fire protection alarm level of each battery pack; and S2, according to the pack-level fire alarm level of each battery pack, an individual fire control measure for a single battery pack and an overall fire control measure for the energy storage cabinet are selected to be executed. According to the invention, individual fire-fighting measures and overall fire-fighting measures are selected to be executed according to the pack-level fire-fighting alarm level of each battery pack, so that accurate individual fire-fighting measures can be taken for thermal runaway of a single battery pack, the single fire-fighting cost is well controlled, and the subsequent maintenance cost is reduced; according to the method, targeted fire-fighting treatment is carried out according to the pack-level fire-fighting alarm level of each battery pack, and liquid fire-fighting treatment can be carried out when thermal runaway of the battery packs cannot be controlled by gas fire-fighting, so that the reliability of single-pack fire-fighting is improved, the spreading of thermal runaway is avoided, and the safety of adjacent battery packs and energy storage cabinets is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage cabinet fire protection, and specifically relates to a method and system for energy storage cabinet fire protection management. Background Art

[0002] Currently, "cluster-level" or "container-level" fire protection designs are generally adopted for energy storage cabinets in the market. When thermal runaway is detected, fire extinguishing agents are released to the entire battery cluster / container. This large-scale fire extinguishing method has a relatively high single cost, and professional cleaning and agent replenishment are required after fire extinguishing, resulting in relatively high subsequent maintenance costs. Due to the large fire protection scope, it is difficult to carry out targeted fire protection treatment on the battery pack with thermal runaway in a timely manner, which easily leads to the spread of thermal runaway to adjacent battery packs or even outside the energy storage cabinet, posing certain safety hazards. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a method and system for energy storage cabinet fire protection management, which can take precise individual fire protection measures for the thermal runaway of a single battery pack, better control the single fire protection cost, reduce the subsequent maintenance cost, improve the reliability of single-pack fire protection, avoid the spread of thermal runaway, and ensure the safety of adjacent battery packs and energy storage cabinets.

[0004] The technical solution adopted by the present invention is as follows: A method for energy storage cabinet fire protection management, wherein a plurality of battery packs are provided in the energy storage cabinet, and a corresponding gas fire protection interface and a corresponding liquid fire protection interface are provided on each battery pack. The method includes: S1, obtaining the package-level fire protection alarm level of each battery pack, and the package-level fire protection alarm level is divided into package-level alarm level one, package-level alarm level two, and package-level alarm level three from light to heavy according to different degrees of thermal runaway in the battery pack; S2, selecting and implementing individual fire protection measures for a single battery pack and overall fire protection measures for the energy storage cabinet according to the package-level fire protection alarm level of each battery pack. Among them, the individual fire protection measures include: prompting an abnormal state, performing gas fire protection on the corresponding battery pack through the gas fire protection interface, and performing liquid fire protection on the corresponding battery pack through the liquid fire protection interface; the overall fire protection measures include: controlling the energy storage system of the energy storage cabinet to stop powering off.

[0005] In addition, the method for energy storage cabinet fire protection management proposed by the present invention may also have the following additional technical features.

[0006] According to an embodiment of the present invention, step S2 specifically includes: if the package-level fire alarm level of a single battery pack reaches the first package-level alarm level, determining that the battery pack is a mildly thermal runaway battery pack and prompting an abnormal state; if the package-level fire alarm level of a single battery pack reaches the second package-level alarm level, determining that the battery pack is a moderately thermal runaway battery pack, prompting the abnormal state and controlling the energy storage system of the energy storage cabinet to shut down and cut off power; if the package-level fire alarm level of a single battery pack reaches the third package-level alarm level, determining that the battery pack is a highly thermal runaway battery pack, and performing gas fire protection on the highly thermal runaway battery pack through the corresponding gas fire protection interface; if after the highly thermal runaway battery pack triggers gas fire protection, the thermal runaway phenomenon in the highly thermal runaway battery pack is still out of control, then performing liquid fire protection on the highly thermal runaway battery pack through the corresponding liquid fire protection interface.

[0007] According to an embodiment of the present invention, the energy storage cabinet is provided with a cabinet body liquid inlet, and step S2 further includes: if after a single battery pack is determined to be a highly thermal runaway battery pack, the package-level fire alarm level of one or more battery packs increases, then performing liquid immersion on all the battery packs in the energy storage cabinet through the cabinet body liquid inlet.

[0008] According to an embodiment of the present invention, the energy storage cabinet is provided with a ventilation system. If the package-level fire alarm level of a single battery pack reaches the second package-level alarm level, determining that the battery pack is a moderately thermal runaway battery pack, turning on the ventilation system, prompting the abnormal state and controlling the energy storage system of the energy storage cabinet to shut down and cut off power; if the package-level fire alarm level of a single battery pack reaches the third package-level alarm level, determining that the battery pack is a highly thermal runaway battery pack, turning off the ventilation system, and performing gas fire protection on the corresponding battery pack through the gas fire protection interface.

[0009] According to an embodiment of the present invention, the energy storage cabinet is provided with a fire gas sprinkler and a cabinet body liquid inlet, and the method further includes: S3, obtaining the cabinet-level fire alarm level of the energy storage cabinet, and the cabinet-level fire alarm level is divided into the first cabinet-level alarm level, the second cabinet-level alarm level, and the third cabinet-level alarm level from light to heavy according to different thermal runaway degrees in the energy storage cabinet; S4, selecting and executing the overall fire protection measures for the energy storage cabinet according to the cabinet-level fire alarm level; wherein, when the overall fire protection measures corresponding to the cabinet-level fire alarm level and the package-level fire alarm level of the battery pack are inconsistent, selecting and executing the overall fire protection measures for the energy storage cabinet according to the higher-level fire alarm level, and the overall fire protection measures include: prompting the abnormal state of the cabinet body, controlling the energy storage system of the energy storage cabinet to shut down and cut off power, performing gas fire protection on the inside of the energy storage cabinet through the fire gas sprinkler, and performing liquid immersion on the inside of the energy storage cabinet through the cabinet body liquid inlet.

[0010] Specifically, step S4 specifically includes: if the cabinet-level fire alarm level reaches the cabinet-level alarm level one, an abnormal state of the cabinet is prompted; if the cabinet-level fire alarm level reaches the cabinet-level alarm level two, an abnormal state of the cabinet is prompted and the energy storage system of the energy storage cabinet is controlled to shut down and cut off power; if the cabinet-level fire alarm level reaches the cabinet-level alarm level three, gas fire protection is carried out inside the energy storage cabinet through the fire gas sprinkler; if the thermal runaway phenomenon in the energy storage cabinet is still out of control after gas fire protection is triggered at the cabinet-level fire alarm level, liquid immersion is carried out inside the energy storage cabinet through the liquid inlet of the cabinet.

[0011] In addition, to achieve the above object, the present invention also proposes an energy storage cabinet fire management system.

[0012] An energy storage cabinet fire management system, in which a plurality of battery packs are arranged in the energy storage cabinet, and a corresponding gas fire protection interface is arranged on each battery pack, and a corresponding liquid fire protection interface is arranged on each battery pack. The system includes: a first acquisition module, which is used to acquire the package-level fire alarm level of each battery pack. The package-level fire alarm level is divided into package-level alarm level one, package-level alarm level two, and package-level alarm level three according to different degrees of thermal runaway in the battery pack from light to heavy; a management module, which is used to select and execute individual fire protection measures for a single battery pack and overall fire protection measures for the energy storage cabinet according to the package-level fire alarm level of each battery pack. Among them, the individual fire protection measures include: prompting an abnormal state, carrying out gas fire protection on the corresponding battery pack through the gas fire protection interface, and carrying out liquid fire protection on the corresponding battery pack through the liquid fire protection interface; the overall fire protection measures include: controlling the energy storage system of the energy storage cabinet to shut down and cut off power.

[0013] In addition, the energy storage cabinet fire management system proposed according to the present invention may also have the following additional technical features.

[0014] According to an embodiment of the present invention, the management module specifically includes an initial management unit and a later management unit. If the package-level fire alarm level of a single battery pack reaches the package-level alarm level one, the initial management unit determines that the battery pack is a mildly thermal runaway battery pack and prompts an abnormal state. If the package-level fire alarm level of a single battery pack reaches the package-level alarm level two, the initial management unit determines that the battery pack is a moderately thermal runaway battery pack, prompts an abnormal state and controls the energy storage system of the energy storage cabinet to shut down and cut off power. If the package-level fire alarm level of a single battery pack reaches the package-level alarm level three, the initial management unit determines that the battery pack is a highly thermal runaway battery pack and conducts gas fire protection on the highly thermal runaway battery pack through the corresponding gas fire protection interface. If, after the highly thermal runaway battery pack triggers gas fire protection, the later management unit monitors that the thermal runaway phenomenon in the highly thermal runaway battery pack is still out of control, liquid fire protection is conducted on the highly thermal runaway battery pack through the corresponding liquid fire protection interface.

[0015] According to an embodiment of the present invention, the energy storage cabinet is provided with a cabinet body liquid inlet. If, after a single battery pack is determined to be a highly thermal runaway battery pack, the first acquisition module acquires that the package-level fire alarm level of one or more battery packs increases, the later management unit controls external fire-fighting liquid to immerse all the battery packs in the energy storage cabinet through the cabinet body liquid inlet.

[0016] According to an embodiment of the present invention, a fire extinguisher is arranged in the energy storage cabinet, and a package-level puncture valve is arranged on each gas fire protection interface. When the initial management unit conducts gas fire protection on the highly thermal runaway battery pack, the fire extinguisher is turned on and the package-level puncture valve on the gas fire protection interface corresponding to the highly thermal runaway battery pack is opened.

[0017] According to an embodiment of the present invention, the liquid fire protection interface includes a liquid inlet and a liquid outlet. Each liquid inlet is connected to a liquid inlet main pipe through a corresponding liquid inlet branch, each liquid outlet is connected to a liquid outlet main pipe through a corresponding liquid outlet branch, a corresponding solenoid valve is arranged on each liquid inlet branch, and a corresponding one-way valve is arranged on each liquid outlet branch. When the later management unit conducts liquid fire protection on the highly thermal runaway battery pack, the solenoid valve on the liquid inlet branch corresponding to the highly thermal runaway battery pack is opened to introduce immersion liquid, so that after the immersion liquid immerses the internal space of the highly thermal runaway battery pack, it flows out through the one-way valve at the liquid outlet.

[0018] According to an embodiment of the present invention, a ventilation system is provided on the energy storage cabinet. If the package-level fire alarm level of a single battery pack reaches the package-level alarm level two, the initial management unit determines that the battery pack is a moderately thermal runaway battery pack, turns on the ventilation system, prompts the abnormal state, and controls the energy storage system of the energy storage cabinet to shut down and cut off the power supply; if the package-level fire alarm level of a single battery pack reaches the package-level alarm level three, the initial management unit determines that the battery pack is a highly thermal runaway battery pack, turns off the ventilation system, and performs gas fire protection on the corresponding battery pack through the gas fire protection interface.

[0019] According to an embodiment of the present invention, a fire gas sprinkler and a cabinet liquid inlet are provided on the energy storage cabinet. The system further includes: a second acquisition module, which is used to acquire the cabinet-level fire alarm level of the energy storage cabinet. The cabinet-level fire alarm level is divided into cabinet-level alarm level one, cabinet-level alarm level two, and cabinet-level alarm level three according to the different degrees of thermal runaway in the energy storage cabinet from light to heavy; the management module is further used to select and execute the overall fire protection measures for the energy storage cabinet according to the cabinet-level fire alarm level; wherein, when the overall fire protection measures corresponding to the cabinet-level fire alarm level and the package-level fire alarm level of the battery pack are inconsistent, the management module selects and executes the overall fire protection measures for the energy storage cabinet according to the higher-level fire alarm level. The overall fire protection measures include: prompting the abnormal state of the cabinet body, controlling the energy storage system of the energy storage cabinet to shut down and cut off the power supply, performing gas fire protection on the inside of the energy storage cabinet through the fire gas sprinkler, and performing liquid immersion on the inside of the energy storage cabinet through the cabinet liquid inlet.

[0020] Specifically, if the cabinet-level fire alarm level reaches the cabinet-level alarm level one, the initial management unit prompts the abnormal state of the cabinet body; if the cabinet-level fire alarm level reaches the cabinet-level alarm level two, the initial management unit prompts the abnormal state of the cabinet body and controls the energy storage system of the energy storage cabinet to shut down and cut off the power supply; if the cabinet-level fire alarm level reaches the cabinet-level alarm level three, the initial management unit performs gas fire protection on the inside of the energy storage cabinet through the fire gas sprinkler; if after the gas fire protection is triggered at the cabinet-level fire alarm level, the later management unit monitors that the thermal runaway phenomenon in the energy storage cabinet is still out of control, liquid immersion is performed on the inside of the energy storage cabinet through the cabinet liquid inlet.

[0021] Advantages of the present invention: The energy storage cabinet fire management method of the present invention can select and execute individual fire protection measures for a single battery pack and overall fire protection measures for the energy storage cabinet according to the package-level fire alarm level of each battery pack. It can take precise individual fire protection measures for the thermal runaway of a single battery pack, avoid large-scale fire extinguishing of all battery packs in the energy storage cabinet once a thermal runaway occurs, can better control the single-fire cost, and reduce the subsequent maintenance cost. By setting separate gas fire protection measures and liquid fire protection measures for each battery pack, targeted fire protection treatment can be carried out according to the package-level fire alarm level of each battery pack. When the gas fire protection cannot control the thermal runaway of the battery pack, the liquid fire protection can be used to further control the thermal runaway of the battery pack, improve the reliability of single-pack fire protection, avoid the spread of thermal runaway, and ensure the safety of adjacent battery packs and the energy storage cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is a schematic structural diagram of an energy storage cabinet according to an embodiment of the present invention, omitting the cabinet door on the battery pack side; Figure 2 is Figure 1 a schematic structural diagram of a battery pack of the embodiment; Figure 3 FIG. is a flowchart of the energy storage cabinet fire management method according to an embodiment of the present invention; Figure 4 FIG. is a flowchart of the liquid fire protection after a single battery pack is determined to be a highly thermally runaway battery pack in an embodiment of the present invention; Figure 5 FIG. is a block schematic diagram of the energy storage cabinet fire management system according to an embodiment of the present invention; Figure 6 FIG. is a schematic structural diagram of the gas fire protection pipeline and interface in the energy storage cabinet according to an embodiment of the present invention, omitting some battery packs and pipelines; Figure 7 FIG. is a schematic structural diagram of the liquid fire protection pipeline and interface in the energy storage cabinet according to an embodiment of the present invention, omitting some battery packs and pipelines.

[0023] REFERENCE SIGNS: 10. First acquisition module, 20. Management module; 1. Battery pack, 2. Gas fire protection interface, 21. Package-level puncture valve, 22. Gas fire protection branch, 23. Gas fire protection main pipe, 24. Cabinet-level puncture valve, 25. Sprinkler head, 3. Liquid fire protection interface, 31. Liquid inlet, 311. Liquid inlet branch, 312. Liquid inlet main pipe, 313. Solenoid valve, 32. Liquid outlet, 321. Liquid outlet branch, 322. Liquid outlet main pipe, 323. Check valve, 4. Fire extinguisher, 5. Cabinet-level sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] As Figure 1 and 2 shown, multiple battery packs 1 are provided in the energy storage cabinet of the embodiment of the present invention. A corresponding gas fire-fighting interface 2 and a corresponding liquid fire-fighting interface 3 are provided on each battery pack 1 to achieve gas fire-fighting and liquid fire-fighting for a single battery pack 1. Among them, the battery pack 1 can be a PACK-level device such as a battery module integrating multiple battery cells or multiple battery modules, and this embodiment does not impose any restrictions.

[0026] As Figure 3 shown, the energy storage cabinet fire management method of the embodiment of the present invention includes: S1, obtaining the package-level fire alarm level of each battery pack. The package-level fire alarm level is divided into package-level alarm level one, package-level alarm level two, and package-level alarm level three from light to heavy according to different thermal runaway degrees in the battery pack.

[0027] Specifically, different thermal runaway degrees inside the battery pack can be distinguished by three - level gas concentration thresholds, three - level temperature change thresholds, and three - level temperature thresholds. When the gas concentration inside the battery pack is less than the first gas concentration threshold, the temperature change is less than the first temperature change threshold, and the temperature is lower than the first temperature threshold, the battery pack is relatively safe, and its pack - level fire alarm level is displayed as a default value or a null value. When the gas concentration inside the battery pack is within the first gas concentration threshold and the second gas concentration threshold, or the temperature change is within the first temperature change threshold and the second temperature change threshold, or the temperature is within the first temperature threshold and the second temperature threshold, there may be a potential thermal runaway hazard in the battery pack, and its pack - level fire alarm level is displayed as pack - level alarm level one. When the gas concentration inside the battery pack is within the second gas concentration threshold and the third gas concentration threshold, or the temperature change is within the second temperature change threshold and the third temperature change threshold, or the temperature is within the second temperature threshold and the third temperature threshold, the battery pack has a certain degree of thermal runaway, and its pack - level fire alarm level is displayed as pack - level alarm level two. When the gas concentration inside the battery pack is greater than or equal to the third gas concentration threshold and the temperature change is greater than or equal to the third temperature change threshold, or the gas concentration inside the battery pack is greater than or equal to the third gas concentration threshold and the temperature is greater than or equal to the third temperature threshold, the battery pack has a relatively serious thermal runaway, and its pack - level fire alarm level is displayed as pack - level alarm level three. Among them, the first gas concentration threshold is less than the second gas concentration threshold, and the second gas concentration threshold is less than the third gas concentration threshold; the first temperature change threshold is less than the second temperature change threshold, and the second temperature change threshold is less than the third temperature change threshold; the first temperature threshold is less than the second temperature threshold, and the second temperature threshold is less than the third temperature threshold.

[0028] S2. According to the pack - level fire alarm level of each battery pack, select and execute individual fire - fighting measures for a single battery pack and overall fire - fighting measures for the energy storage cabinet. Among them, the individual fire - fighting measures include: prompting the abnormal state, performing gas fire - fighting on the corresponding battery pack through the gas fire - fighting interface, and performing liquid fire - fighting on the corresponding battery pack through the liquid fire - fighting interface; the overall fire - fighting measures include: controlling the energy storage system of the energy storage cabinet to shut down and cut off the power supply.

[0029] The energy storage cabinet fire management method according to an embodiment of the present invention can select and execute individual fire protection measures for a single battery pack and overall fire protection measures for the energy storage cabinet based on the package-level fire alarm level of each battery pack. It can take precise individual fire protection measures for the thermal runaway of a single battery pack, avoid large-scale fire extinguishing of all battery packs in the energy storage cabinet once a thermal runaway occurs, better control the single-fire protection cost, and reduce the subsequent maintenance cost. By setting separate gas fire protection measures and liquid fire protection measures for each battery pack, targeted fire protection treatment can be carried out according to the package-level fire alarm level of each battery pack. When the gas fire protection cannot control the thermal runaway of the battery pack, the liquid fire protection can be used to further control the thermal runaway of the battery pack, improve the reliability of single-pack fire protection, avoid the spread of thermal runaway, and ensure the safety of adjacent battery packs and the energy storage cabinet.

[0030] In an embodiment of the present invention, step S2 may specifically include: (1), If the package-level fire alarm level of a single battery pack reaches the first package-level alarm level, determine that the battery pack is a mildly thermally runaway battery pack and prompt the abnormal state for the management personnel to refer to.

[0031] (2), If the package-level fire alarm level of a single battery pack reaches the second package-level alarm level, determine that the battery pack is a moderately thermally runaway battery pack, prompt the abnormal state and control the energy storage system of the energy storage cabinet to shut down and cut off the power.

[0032] When a single battery pack is determined to be a moderately thermally runaway battery pack, a certain degree of thermal runaway already exists in the battery pack. At this time, controlling the energy storage system to shut down and cut off the power can prevent the temperature of the moderately thermally runaway battery pack from continuously rising due to the continuous operation of the energy storage system, thereby causing thermal spread and even fire. The management personnel can first repair the moderately thermally runaway battery pack and the energy storage cabinet, and then restart the energy storage system after eliminating the fire hazards to ensure the safe and reliable operation of the energy storage cabinet.

[0033] (3), If the package-level fire alarm level of a single battery pack reaches the third package-level alarm level, determine that the battery pack is a highly thermally runaway battery pack, and conduct gas fire protection on the highly thermally runaway battery pack through the corresponding gas fire protection interface.

[0034] It can be understood that if only a single battery pack is determined to be a highly thermally runaway battery pack, there may not be a fire in the battery pack. At this time, conducting gas fire protection on the battery pack alone can effectively isolate oxygen and prevent the battery pack from catching fire.

[0035] (4)If the thermal runaway of the high-temperature thermal runaway battery pack remains uncontrolled after triggering the gas fire protection, for example, there are temperature increases and multiple cell anomalies in the high-temperature thermal runaway battery pack, liquid fire protection can be carried out on the high-temperature thermal runaway battery pack through the corresponding liquid fire protection interface, so as to quickly extinguish the fire source and prevent heat spread, such as Figure 4 shown.

[0036] In an embodiment of the present invention, a cabinet liquid inlet is provided on the energy storage cabinet, so that external fire-fighting liquid can enter the energy storage cabinet from the liquid inlet to achieve the overall liquid immersion of all battery packs in the energy storage cabinet, such as Figure 4 shown, step S2 may further include: (5)If, after a single battery pack is determined to be a high-temperature thermal runaway battery pack, the package-level fire alarm level of one or more battery packs increases, that is, heat spreads in the energy storage cabinet, liquid immersion of all battery packs in the energy storage cabinet is performed through the cabinet liquid inlet.

[0037] It should be noted that the above steps (3) and (4) are only for the thermal runaway control within a single battery pack. There may be multiple battery packs with different degrees of thermal runaway in the energy storage cabinet. Separate gas fire protection and liquid fire protection for the high-temperature thermal runaway battery pack may not be able to control the spread of thermal runaway. By setting a cabinet liquid inlet on the energy storage cabinet and performing liquid immersion of all battery packs when the fire protection level of one or more battery packs increases, that is, when thermal runaway spreads, the thermal runaway of the entire energy storage cabinet can be processed, effectively preventing further heat spread.

[0038] In an embodiment of the present invention, a ventilation system is provided on the energy storage cabinet for the air change of the energy storage cabinet. If the package-level fire alarm level of a single battery pack reaches the package-level alarm level two, it is determined that the battery pack is a moderately thermal runaway battery pack, and the ventilation system is turned on to achieve the air change in the energy storage cabinet, prompt the abnormal state and control the energy storage system of the energy storage cabinet to stop powering off. If the package-level fire alarm level of a single battery pack reaches the package-level alarm level three, it is determined that the battery pack is a high-temperature thermal runaway battery pack, and the ventilation system is turned off to reduce the entry of external air, and gas fire protection is carried out on the corresponding battery pack through the gas fire protection interface.

[0039] To prevent the fire risk caused by the failure of other components in the energy storage cabinet except the battery pack, in an embodiment of the present invention, the energy storage cabinet fire management method may further include: S3, obtaining the cabinet-level fire alarm level of the energy storage cabinet. The cabinet-level fire alarm level is divided into cabinet-level alarm level one, cabinet-level alarm level two, and cabinet-level alarm level three from light to heavy according to different thermal runaway degrees in the energy storage cabinet.

[0040] Specifically, the same differentiation method can be used to distinguish different thermal runaway degrees within the battery pack. The different thermal runaway degrees within the energy storage cabinet can be distinguished by three - level gas concentration thresholds, three - level temperature change thresholds, and three - level temperature thresholds. This is not elaborated in this embodiment. In some other embodiments of the present invention, other parameters can be used to distinguish the thermal runaway degree within the energy storage cabinet according to actual requirements, and this embodiment does not limit it.

[0041] S4. Select and execute the overall fire - fighting measures for the energy storage cabinet according to the cabinet - level fire alarm level. Among them, when the overall fire - fighting measures corresponding to the cabinet - level fire alarm level and the pack - level fire alarm level of the battery pack are inconsistent, select and execute the overall fire - fighting measures for the energy storage cabinet according to the higher - level fire alarm level. The overall fire - fighting measures include: prompting the abnormal state of the cabinet body, controlling the energy storage system of the energy storage cabinet to stop power supply, performing gas fire - fighting inside the energy storage cabinet through the fire gas nozzles, and performing liquid immersion inside the energy storage cabinet through the liquid inlet of the cabinet body.

[0042] By selecting and executing the overall fire - fighting measures for the energy storage cabinet according to the cabinet - level fire alarm level, it can better cope with the fire risks caused by the thermal runaway of the battery pack without alarm and the failures of other components outside the battery pack. Moreover, steps S1 and S3 can be carried out synchronously. When the overall fire - fighting measures corresponding to the cabinet - level fire alarm level and the pack - level fire alarm level of the battery pack are inconsistent, selecting and executing the overall fire - fighting measures for the energy storage cabinet according to the higher - level fire alarm level can timely suppress the spread of thermal runaway inside the energy storage cabinet or the battery pack and ensure the safety of the battery pack and the energy storage cabinet.

[0043] Specifically, in an embodiment of the present invention, step S4 may specifically include: (6) If the cabinet - level fire alarm level reaches the first - level cabinet - level alarm level, prompt the abnormal state of the cabinet body for the reference of the management personnel.

[0044] (7) If the cabinet - level fire alarm level reaches the second - level cabinet - level alarm level, prompt the abnormal state of the cabinet body and control the energy storage system of the energy storage cabinet to stop power supply.

[0045] (8) If the cabinet - level fire alarm level reaches the third - level cabinet - level alarm level, perform gas fire - fighting inside the energy storage cabinet through the fire gas nozzles.

[0046] (9) If after the gas fire - fighting is triggered at the cabinet - level fire alarm level and the thermal runaway phenomenon inside the energy storage cabinet is still out of control, such as the temperature inside the energy storage cabinet rises, the pack - level fire alarm levels of multiple battery packs rise, etc., then perform liquid immersion inside the energy storage cabinet through the liquid inlet of the cabinet body.

[0047] In addition, to achieve the above - mentioned purpose, the present invention also proposes an energy storage cabinet fire - fighting management system.

[0048] Such as Figure 5As shown in the figure, the energy storage cabinet fire management system according to the embodiment of the present invention includes: a first acquisition module 10 and a management module 20. The first acquisition module 10 is used to acquire the package-level fire alarm level of each battery pack. The package-level fire alarm level is divided into package-level alarm level one, package-level alarm level two, and package-level alarm level three from light to heavy according to different thermal runaway degrees in the battery pack. The management module 20 is used to select and execute individual fire protection measures for a single battery pack and overall fire protection measures for the energy storage cabinet according to the package-level fire alarm level of each battery pack. Among them, the individual fire protection measures include: prompting an abnormal state, performing gas fire protection on the corresponding battery pack through a gas fire protection interface, and performing liquid fire protection on the corresponding battery pack through a liquid fire protection interface. The overall fire protection measures include: controlling the energy storage system of the energy storage cabinet to shut down and cut off power.

[0049] According to the energy storage cabinet fire management system of the embodiment of the present invention, by selecting and executing individual fire protection measures for a single battery pack and overall fire protection measures for the energy storage cabinet according to the package-level fire alarm level of each battery pack, it is possible to take precise individual fire protection measures for the thermal runaway of a single battery pack, avoid large-scale fire extinguishing of all battery packs in the energy storage cabinet once a thermal runaway occurs, and can better control the single-fire protection cost and reduce the subsequent maintenance cost. By providing separate gas fire protection and liquid fire protection interfaces for each battery pack, it provides equipment support for realizing single-pack fire protection. When the gas fire protection cannot control the thermal runaway of the battery pack, the liquid fire protection can be used to further control the thermal runaway of the battery pack, improving the reliability of single-pack fire protection. Moreover, it can perform targeted fire protection treatment according to the package-level fire alarm level of each battery pack, avoid the spread of thermal runaway, and ensure the safety of adjacent battery packs and the energy storage cabinet.

[0050] In an embodiment of the present invention, the management module 20 may specifically include an initial management unit and a later management unit. If the package-level fire alarm level of a single battery pack reaches package-level alarm level one, the initial management unit determines that the battery pack is a mildly thermally runaway battery pack and prompts an abnormal state for the reference of the management personnel. If the package-level fire alarm level of a single battery pack reaches package-level alarm level two, the initial management unit determines that the battery pack is a moderately thermally runaway battery pack, prompts an abnormal state and controls the energy storage system of the energy storage cabinet to shut down and cut off power. If the package-level fire alarm level of a single battery pack reaches package-level alarm level three, the initial management unit determines that the battery pack is a highly thermally runaway battery pack. There may not be a fire in the battery pack. Gas fire protection is performed on the highly thermally runaway battery pack through the corresponding gas fire protection interface, which can effectively isolate oxygen and prevent the battery pack from catching fire. If, after the highly thermally runaway battery pack triggers gas fire protection, the later management unit monitors that the thermal runaway phenomenon in the highly thermally runaway battery is still out of control, liquid fire protection is performed on the highly thermally runaway battery pack through the corresponding liquid fire protection interface.

[0051] In an embodiment of the present invention, a cabinet liquid inlet is provided on the energy storage cabinet. If, after a single battery pack is determined to be a highly thermally runaway battery pack, the first acquisition module 10 acquires that the package-level fire alarm level of one or more battery packs has increased, the later management unit controls external fire-fighting liquid to immerse all the battery packs in the energy storage cabinet through the cabinet liquid inlet.

[0052] It should be noted that the gas fire-fighting performed by the above-mentioned initial management unit and the liquid fire-fighting performed by the later management unit are only for the thermal runaway control within a single battery pack. There may be multiple battery packs with different degrees of thermal runaway in the energy storage cabinet. Separately performing gas fire-fighting and liquid fire-fighting on the highly thermally runaway battery pack may not be able to control the spread of thermal runaway. By providing a cabinet liquid inlet on the energy storage cabinet and when the fire-fighting levels of multiple battery packs increase, that is, when thermal runaway spreads, the later management unit controls external fire-fighting liquid to enter the energy storage cabinet for liquid immersion of all battery packs, and performs the treatment of the thermal runaway of the entire energy storage cabinet, which can effectively prevent further thermal spread.

[0053] As Figure 6 shown, in an embodiment of the present invention, a fire extinguisher 4 may be provided in the energy storage cabinet, and a package-level puncture valve 21 is provided on each gas fire-fighting interface 2. When the initial management unit performs gas fire-fighting on the highly thermally runaway battery pack, the fire extinguisher 4 is turned on and the package-level puncture valve 21 on the gas fire-fighting interface 2 corresponding to the highly thermally runaway battery pack is opened, so that the fire-fighting gas in the fire extinguisher 4 can enter the highly thermally runaway battery pack through the gas fire-fighting interface 2 to achieve gas fire-fighting of a single battery pack.

[0054] Specifically, each gas fire-fighting interface 2 may be connected to a corresponding gas fire-fighting branch 22, and each gas fire-fighting branch 22 is connected to the fire extinguisher 4 through a gas fire-fighting main pipe 23, so that the initial management unit can control the fire extinguisher 4 to perform separate gas fire-fighting on the highly thermally runaway battery pack according to the thermal runaway situation. In some other embodiments of the present invention, the fire extinguisher 4 may also be provided outside the energy storage cabinet, and the gas fire-fighting interface 2 may also be directly connected to an external fire-fighting gas supply unit, etc., and this embodiment is not limited thereto.

[0055] As Figure 1 and 7As shown, in an embodiment of the present invention, the liquid fire-fighting interface 3 may include a liquid inlet 31 and a liquid outlet 32. Each liquid inlet 31 is connected to a liquid inlet main pipe 312 through a corresponding liquid inlet branch 311, and each liquid outlet 32 is connected to a liquid outlet main pipe 322 through a corresponding liquid outlet branch 321. A corresponding solenoid valve 313 is provided on each liquid inlet branch 311, and a corresponding check valve 323 is provided on each liquid outlet branch 321. When the later management unit conducts liquid fire-fighting on a highly thermally runaway battery pack, the solenoid valve 313 on the liquid inlet branch 311 corresponding to the highly thermally runaway battery pack is opened, and immersion liquid is introduced so that the immersion liquid submerges the internal space of the highly thermally runaway battery pack and then flows out through the check valve at the liquid outlet. Specifically, the immersion liquid can enter the highly thermally runaway battery pack through the liquid inlet main pipe 312, the liquid inlet branch 311, and the liquid inlet 31, submerge the internal space of the highly thermally runaway battery pack, and then be discharged through the liquid outlet 32, thereby ensuring the unidirectional flow of the fire-fighting liquid during liquid fire-fighting, effectively blocking the fire-fighting liquid from entering other battery packs that have not experienced thermal runaway through the pipeline, avoiding damage to redundant battery packs, and reducing unnecessary losses.

[0056] In an embodiment of the present invention, a ventilation system may also be provided on the energy storage cabinet. If the package-level fire alarm level of a single battery pack reaches the package-level alarm level two, the initial management unit determines that the battery pack is a moderately thermally runaway battery pack, turns on the ventilation system, prompts the abnormal state, and controls the energy storage system of the energy storage cabinet to shut down and cut off the power supply; if the package-level fire alarm level of a single battery pack reaches the package-level alarm level three, the initial management unit determines that the battery pack is a highly thermally runaway battery pack, turns off the ventilation system, and conducts gas fire-fighting on the corresponding battery pack through the gas fire-fighting interface.

[0057] In an embodiment of the present invention, a fire-fighting gas spray head and a cabinet liquid inlet are provided on the energy storage cabinet. The system further includes: a second acquisition module, which is used to acquire the cabinet-level fire alarm level of the energy storage cabinet. The cabinet-level fire alarm level is divided into cabinet-level alarm level one, cabinet-level alarm level two, and cabinet-level alarm level three from light to heavy according to different thermal runaway degrees in the energy storage cabinet; the management module is also used to select and execute the overall fire-fighting measures for the energy storage cabinet according to the cabinet-level fire alarm level; among them, when the overall fire-fighting measures corresponding to the cabinet-level fire alarm level and the package-level fire alarm level of the battery pack are inconsistent, the management module selects and executes the overall fire-fighting measures for the energy storage cabinet according to the higher-level fire alarm level. The overall fire-fighting measures include: prompting the abnormal state of the cabinet body, controlling the energy storage system of the energy storage cabinet to shut down and cut off the power supply, conducting gas fire-fighting inside the energy storage cabinet through the fire-fighting gas spray head, and conducting liquid immersion inside the energy storage cabinet through the cabinet liquid inlet.

[0058] By selecting and implementing the overall fire protection measures for the energy storage cabinet according to the cabinet-level fire alarm level, it is possible to better respond to the fire risks caused by the thermal runaway of the battery pack without an alarm and the failures of other components outside the battery pack. Moreover, the first acquisition module and the second acquisition module can work synchronously. When the overall fire protection measures corresponding to the cabinet-level fire alarm level obtained by the second acquisition module are inconsistent with the package-level fire alarm level of the battery pack obtained by the first acquisition module, selecting and implementing the overall fire protection measures for the energy storage cabinet according to the higher fire alarm level can timely suppress the spread of thermal runaway inside the energy storage cabinet or the battery pack and ensure the safety of the battery pack and the energy storage cabinet.

[0059] Specifically, if the cabinet-level fire alarm level reaches the first cabinet-level alarm level, the initial management unit prompts the abnormal state of the cabinet body; if the cabinet-level fire alarm level reaches the second cabinet-level alarm level, the initial management unit prompts the abnormal state of the cabinet body and controls the energy storage system of the energy storage cabinet to shut down and cut off the power; if the cabinet-level fire alarm level reaches the third cabinet-level alarm level, the initial management unit conducts gas fire protection inside the energy storage cabinet through the fire gas nozzles; if, after the gas fire protection is triggered at the cabinet-level fire alarm level, the later management unit monitors that the thermal runaway phenomenon inside the energy storage cabinet is still out of control, liquid immersion is carried out inside the energy storage cabinet through the liquid inlet of the cabinet body.

[0060] As Figure 6 shown, in an embodiment of the present invention, a cabinet-level sensor 5 may also be provided inside the energy storage cabinet for monitoring the thermal runaway parameters of the cabinet body, such as gas concentration, temperature, etc. A cabinet-level puncture valve 24 may also be provided on the main gas fire protection pipe 23. The output end of the cabinet-level puncture valve 24 is connected to the fire gas nozzle 25, so that when the cabinet-level fire alarm level of the energy storage cabinet is updated to the third cabinet-level alarm level according to the monitoring data of the cabinet-level sensor 5, the second acquisition module acquires the cabinet-level fire alarm level, and the management module can control the fire extinguisher 4 and the cabinet-level puncture valve 24 to open according to the updated cabinet-level fire alarm level, so that the fire gas can be directly output from the fire gas nozzle 25 through the main gas fire protection pipe 23 and the cabinet-level puncture valve 24 to conduct overall gas fire protection on the energy storage cabinet.

[0061] In the description of the present invention, the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.

[0063] In the present invention, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0064] The execution order of the steps shown in the flowchart is a preferred implementation. In other embodiments of the present invention, it can also be adjusted according to the functions involved in each step. For example, they can be executed simultaneously or in the reverse order.

[0065] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a definite sequence list of executable instructions for implementing logical functions, which can be specifically implemented in any computer-readable medium for use by or in conjunction with an instruction execution system, apparatus or device. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate or transport a program for use by or in conjunction with an instruction execution system, apparatus or device.

[0066] Those of ordinary skill in the art of this technology can understand that all or part of the steps carried by the method of the above embodiments can be completed by instructing relevant hardware through a program. The said program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0067] In addition, in each embodiment of the present invention, each functional unit can be integrated into a processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. When the above integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

Claims

1. A fire protection management method for an energy storage cabinet, wherein a plurality of battery packs are arranged in the energy storage cabinet, characterized in that: Each of the battery packs is provided with a corresponding gas fire-fighting interface, and each of the battery packs is provided with a corresponding liquid fire-fighting interface, and the method comprises: S1, obtaining a pack-level fire alarm level of each battery pack, wherein the pack-level fire alarm level is divided into pack-level alarm level 1, pack-level alarm level 2 and pack-level alarm level 3 from light to heavy according to different degrees of thermal runaway in the battery pack; S2, according to the pack-level fire alarm level of each battery pack, selecting and executing individual fire protection measures for a single battery pack and overall fire protection measures for the energy storage cabinet; Among them, the individual fire-fighting measures include: prompting abnormal status, performing gas fire-fighting on the corresponding battery pack through the gas fire-fighting interface, and performing liquid fire-fighting on the corresponding battery pack through the liquid fire-fighting interface; the overall fire-fighting measures include: controlling the energy storage system of the energy storage cabinet to shut down and power off.

2. The energy storage cabinet fire management method according to claim 1, characterized in that: Step S2 specifically includes: If the pack-level fire alarm level of a single battery pack reaches pack-level alarm level 1, the battery pack is judged to be a mild thermal runaway battery pack and an abnormal state is indicated; If the pack-level fire alarm level of a single battery pack reaches pack-level alarm level 2, the battery pack is determined to be a moderate thermal runaway battery pack, an abnormal state is indicated, and the energy storage system of the energy storage cabinet is controlled to shut down and power off; If there is a single battery pack whose pack-level fire alarm level reaches pack-level alarm level three, the battery pack is determined to be a high thermal runaway battery pack, and gas fire fighting is performed on the high thermal runaway battery pack through the corresponding gas fire fighting interface; If the thermal runaway phenomenon in the highly thermal runaway battery pack is still out of control after the gas fire protection is triggered, liquid fire protection is carried out on the highly thermal runaway battery pack through the corresponding liquid fire protection interface.

3. The energy storage cabinet fire management method according to claim 2, characterized in that: The energy storage cabinet is provided with a cabinet liquid inlet, and step S2 further includes: If, after a single battery pack is determined to be a highly thermal runaway battery pack, the pack-level fire alarm level of one or more battery packs is increased, all battery packs in the energy storage cabinet are submerged in liquid through the cabinet liquid inlet.

4. The energy storage cabinet fire management method according to claim 2, characterized in that: The energy storage cabinet is provided with a ventilation system. If the pack-level fire alarm level of a single battery pack reaches pack-level alarm level 2, the battery pack is determined to be a moderate thermal runaway battery pack, the ventilation system is turned on, an abnormal state is indicated, and the energy storage system of the energy storage cabinet is controlled to shut down and power off; If there is a single battery pack whose pack-level fire alarm level reaches pack-level alarm level three, the battery pack is determined to be a highly thermal runaway battery pack, the ventilation system is shut down, and gas fire fighting is carried out on the corresponding battery pack through the gas fire fighting interface.

5. The energy storage cabinet fire management method according to claim 1, characterized in that: The energy storage cabinet is provided with a fire-fighting gas nozzle and a cabinet liquid inlet, and the method further comprises: S3, obtaining a cabinet-level fire alarm level of the energy storage cabinet, wherein the cabinet-level fire alarm level is divided into cabinet-level alarm level 1, cabinet-level alarm level 2, and cabinet-level alarm level 3 from light to heavy according to different degrees of thermal runaway in the energy storage cabinet; S4, selecting and executing overall fire protection measures for the energy storage cabinet according to the cabinet-level fire alarm level; Among them, when the overall fire protection measures corresponding to the cabinet-level fire alarm level and the pack-level fire alarm level of the battery pack are inconsistent, the overall fire protection measures for the energy storage cabinet are selected and executed according to the fire protection alarm level with a higher level, and the overall fire protection measures include: prompting the abnormal state of the cabinet, controlling the energy storage system of the energy storage cabinet to shut down and power off, performing gas fire protection inside the energy storage cabinet through the fire protection gas nozzle, and immersing the inside of the energy storage cabinet in liquid through the cabinet liquid inlet.

6. The energy storage cabinet fire management method according to claim 5, characterized in that: Step S4 specifically includes: If the cabinet-level fire alarm level reaches cabinet-level alarm level 1, an abnormal cabinet state is indicated; If the cabinet-level fire alarm level reaches cabinet-level alarm level 2, an abnormal cabinet state is prompted and the energy storage system of the energy storage cabinet is controlled to shut down and power off; If the cabinet-level fire alarm level reaches cabinet-level alarm level three, gas firefighting is carried out into the energy storage cabinet through the fire gas nozzle; If the thermal runaway phenomenon in the energy storage cabinet is still out of control after the cabinet-level fire alarm level triggers the gas fire, the interior of the energy storage cabinet is flooded with liquid through the cabinet body liquid inlet.

7. An energy storage cabinet fire management system, wherein a plurality of battery packs are arranged in the energy storage cabinet, characterized in that: Each of the battery packs is provided with a corresponding gas fire-fighting interface, and each of the battery packs is provided with a corresponding liquid fire-fighting interface, and the system comprises: A first acquisition module, the first acquisition module is used to obtain a pack-level fire alarm level of each battery pack, the pack-level fire alarm level is divided into pack-level alarm level 1, pack-level alarm level 2 and pack-level alarm level 3 from light to heavy according to different degrees of thermal runaway in the battery pack; A management module, the management module is used to select and execute individual fire protection measures for a single battery pack and overall fire protection measures for the energy storage cabinet according to the pack-level fire alarm level of each battery pack, Among them, the individual fire-fighting measures include: prompting abnormal status, performing gas fire-fighting on the corresponding battery pack through the gas fire-fighting interface, and performing liquid fire-fighting on the corresponding battery pack through the liquid fire-fighting interface; the overall fire-fighting measures include: controlling the energy storage system of the energy storage cabinet to shut down and power off.

8. The energy storage cabinet fire management system according to claim 7, characterized in that: The management module specifically includes an initial management unit and a later management unit. If the pack-level fire alarm level of a single battery pack reaches pack-level alarm level 1, the initial management unit determines that the battery pack is a mild thermal runaway battery pack and prompts an abnormal state; If there is a single battery pack whose pack-level fire alarm level reaches pack-level alarm level 2, the initial management unit determines that the battery pack is a moderate thermal runaway battery pack, prompts the abnormal state and controls the energy storage system of the energy storage cabinet to shut down and power off; If there is a single battery pack whose pack-level fire alarm level reaches pack-level alarm level three, the initial management unit determines that the battery pack is a high thermal runaway battery pack, and performs gas fire fighting on the high thermal runaway battery pack through the corresponding gas fire fighting interface; If, after the highly thermal runaway battery pack triggers the gas fire protection, the post-management unit detects that the thermal runaway phenomenon in the highly thermal runaway battery pack is still out of control, liquid fire protection is performed on the highly thermal runaway battery pack through the corresponding liquid fire protection interface.

9. The energy storage cabinet fire management system according to claim 8, characterized in that: The energy storage cabinet is provided with a cabinet liquid inlet. If, after a single battery pack is determined to be a highly thermal runaway battery pack, the first acquisition module obtains that the pack-level fire alarm level of one or more battery packs is increased, the post-management unit controls external fire-fighting liquid to immerse all battery packs in the energy storage cabinet through the cabinet liquid inlet.

10. The energy storage cabinet fire management system according to claim 8, characterized in that: A fire extinguisher is provided in the energy storage cabinet, and a pack-level puncture valve is provided on each of the gas fire-fighting interfaces. When the initial management unit performs gas fire-fighting on the highly thermal runaway battery pack, the fire extinguisher is turned on and the pack-level puncture valve on the gas fire-fighting interface corresponding to the highly thermal runaway battery pack is opened.

11. The energy storage cabinet fire management system according to claim 8, characterized in that: The liquid fire-fighting interface includes a liquid inlet and a liquid outlet, each of the liquid inlet is connected to the liquid inlet main pipe via a corresponding liquid inlet branch, each of the liquid outlet is connected to the liquid outlet main pipe via a corresponding liquid outlet branch, each of the liquid inlet branches is provided with a corresponding solenoid valve, and each of the liquid outlet branches is provided with a corresponding one-way valve. When the post-management unit performs liquid fire-fighting on the highly thermal runaway battery pack, it opens the solenoid valve on the liquid inlet branch corresponding to the highly thermal runaway battery pack and introduces immersion liquid so that the immersion liquid submerges the internal space of the highly thermal runaway battery pack and then flows out from the one-way valve at the liquid outlet.

12. The energy storage cabinet fire management system according to claim 8, characterized in that: The energy storage cabinet is provided with a ventilation system. If there is a single battery pack whose pack-level fire alarm level reaches pack-level alarm level 2, the initial management unit determines that the battery pack is a moderate thermal runaway battery pack, opens the ventilation system, prompts the abnormal state, and controls the energy storage system of the energy storage cabinet to shut down and power off; If there is a single battery pack whose pack-level fire alarm level reaches pack-level alarm level three, the initial management unit determines that the battery pack is a highly thermal runaway battery pack, shuts down the ventilation system, and performs gas fire fighting on the corresponding battery pack through the gas fire fighting interface.

13. The energy storage cabinet fire management system according to claim 7, characterized in that: The energy storage cabinet is provided with a fire-fighting gas nozzle and a cabinet liquid inlet, and the system further comprises: A second acquisition module, the second acquisition module is used to acquire the cabinet-level fire alarm level of the energy storage cabinet, and the cabinet-level fire alarm level is divided into cabinet-level alarm level 1, cabinet-level alarm level 2 and cabinet-level alarm level 3 from light to heavy according to different degrees of thermal runaway in the energy storage cabinet; The management module is also used to select and execute overall fire protection measures for the energy storage cabinet according to the cabinet-level fire alarm level; Among them, when the overall fire protection measures corresponding to the cabinet-level fire alarm level and the pack-level fire alarm level of the battery pack are inconsistent, the management module selects to execute the overall fire protection measures for the energy storage cabinet according to the higher-level fire alarm level, and the overall fire protection measures include: prompting the abnormal state of the cabinet, controlling the energy storage system of the energy storage cabinet to shut down and power off, performing gas fire protection inside the energy storage cabinet through the fire gas nozzle, and immersing the inside of the energy storage cabinet in liquid through the cabinet liquid inlet.

14. The energy storage cabinet fire management system according to claim 13, characterized in that: If the cabinet-level fire alarm level reaches cabinet-level alarm level 1, the initial management unit prompts the cabinet body to be in an abnormal state; If the cabinet-level fire alarm level reaches cabinet-level alarm level 2, the initial management unit prompts the cabinet to be in abnormal state and controls the energy storage system of the energy storage cabinet to shut down and power off; If the cabinet-level fire alarm level reaches cabinet-level alarm level three, the initial management unit performs gas fire fighting inside the energy storage cabinet through the fire gas nozzle; If, after the cabinet-level fire alarm level triggers gas fire fighting, the post-management unit detects that the thermal runaway phenomenon in the energy storage cabinet is still out of control, liquid is immersed into the interior of the energy storage cabinet through the cabinet body liquid inlet.

Images