Energy storage cabinet multi-stage fire-fighting method and device and energy storage cabinet system

Abstract

The embodiment of the invention relates to an energy storage cabinet multi-stage fire-fighting method and device and an energy storage cabinet system.The method comprises the steps that after PACK abnormity is detected, fire fighting is conducted on a PACK module in an energy storage cabinet through a PACK-stage fire-fighting strategy; detecting second detection data after fire fighting of the PACK module is completed, and performing fire fighting on a battery cluster in the energy storage cabinet through a cluster-level fire fighting strategy according to the second detection data; and after fire fighting of the battery cluster is completed, third detection data are detected, and overall fire fighting is carried out on the energy storage cabinet through a cabinet-level fire fighting strategy. According to the method, fire fighting can be accurately carried out on the PACK module or the battery cluster in the energy storage cabinet through classification, and the situation that the energy storage cabinet is damaged by excessive fire fighting is avoided.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of energy storage technology, and specifically to a multi-stage fire protection method and device for an energy storage cabinet, and an energy storage cabinet system. Background Art

[0002] With the rapid development of the new energy industry, energy storage equipment is increasingly being used in the energy field. Among them, energy storage cabinets are a type of equipment specifically designed to store electrical energy, which integrates battery packs, battery management systems, power electronic converters, control systems, and other necessary auxiliary equipment. The main function of energy storage cabinets is to store electrical energy when there is excess power in the grid or when renewable energy is sufficient, and to release electrical energy when there is insufficient power in the grid or when demand is at a peak, in order to provide power support, balance grid loads, improve energy efficiency, and serve as a backup power source.

[0003] However, the safety issues of energy storage equipment are becoming increasingly prominent, among which fire protection is particularly important. In industrial and commercial energy storage cabinets, the fire protection system usually adopts package-level protection or cabinet-level protection; package-level protection is to install fire detectors on each PACK, and start the fire protection through the alarm of the fire detector; cabinet-level protection is to install fire detectors on the top of the energy storage cabinet, and start the fire protection after the alarm is generated. When carrying out fire protection, the entire energy storage cabinet is generally treated for fire protection, and the fire protection is not accurate enough, which affects the normal use of other safe PACK modules or cluster-level modules. Summary of the invention

[0004] In view of the above problems, an example of the present invention provides a multi-level fire protection method, device and energy storage cabinet system for an energy storage cabinet, which is used to solve the problem in the prior art that when performing fire protection on an energy storage cabinet, the fire protection is not accurate enough by directly performing fire protection treatment on the entire energy storage cabinet, which affects the normal use of other safe PACK modules or cluster-level modules.

[0005] According to one aspect of an example of the present invention, a multi-stage fire protection method for an energy storage cabinet is provided, which is applied to an energy storage cabinet having at least one battery cluster, wherein the battery cluster has at least one PACK module, and the method comprises: Acquire first detection data, wherein the first detection data is a first pressure value and / or a first temperature value of a PACK module or a battery cell in the energy storage cabinet; According to 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 fighting strategy to fire the energy storage cabinet, and obtain the second detection data after the fire fighting is completed; According to the second detection data, determine whether the battery cluster is abnormal, if so, mark the battery cluster as an abnormal battery cluster, execute a cluster-level fire fighting strategy to extinguish the energy storage cabinet, and obtain third detection data after the extinguishing is completed; According to 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 a cabinet-level fire fighting strategy is executed to extinguish the energy storage cabinet.

[0006] In some optional embodiments, judging whether the PACK module is abnormal according to the first detection data, if so, marking the PACK module as an abnormal PACK module, and executing a PACK-level fire fighting strategy to fire the energy storage cabinet, specifically including: 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, firefighting is carried out through the first fire extinguishing device built into the PACK module.

[0007] In some optional embodiments, the second detection data is detection data of an abnormal PACK module or detection data of a 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.

[0008] In some optional embodiments, judging whether the battery cluster is abnormal based on the second detection data, and if so, marking the battery cluster as an abnormal battery cluster, and executing a cluster-level fire fighting strategy to fire the energy storage cabinet, specifically includes: 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, a cluster-level fire fighting strategy is used to perform graded fire fighting on the battery cluster according to 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.

[0009] In some optional embodiments, performing a cluster-level fire fighting strategy on the battery cluster for hierarchical fire fighting according to 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 includes: When the difference between the second pressure value and the second pressure setting value is within the first pressure range and / or when the difference between the second temperature value and the second temperature setting value is within the first temperature range, the abnormal PACK module is cooled by the fire-fighting fan and the liquid cooling unit in the battery cluster; When the difference between the second pressure value and the second pressure setting value is within the second pressure range and / or when the difference between the second temperature value and the second temperature setting value is within the second temperature range, atomizing and spraying the abnormal PACK module is performed through the nozzles and partition valves in the battery cluster; When the difference between the second pressure value and the second pressure setting value exceeds the second pressure range and / or when the difference between the second temperature value and the second temperature setting value exceeds the second temperature range, the fire extinguishing device is activated to extinguish the fire of the entire abnormal battery cluster.

[0010] In some optional embodiments, the third detection data is detection data of an abnormal battery cluster or detection data of an energy storage cabinet, and the third detection data includes a third pressure value and / or a third temperature value.

[0011] In some optional embodiments, judging whether the energy storage cabinet is abnormal according to the third detection data, and if so, marking the energy storage cabinet as an abnormal energy storage cabinet, and executing a cabinet-level fire fighting strategy to fire the energy storage cabinet specifically includes: When the third pressure value exceeds a preset third pressure setting value and / or when the third temperature value exceeds a 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, a cabinet-level fire fighting strategy is used to perform graded fire fighting on the energy storage cabinet according to 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.

[0012] In some optional embodiments, the step of performing a cabinet-level fire fighting strategy on the energy storage cabinet for graded fire fighting according to 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 specifically includes: When the difference between the third pressure value and the third pressure setting value is within the third pressure range and / or when the difference between the third temperature value and the third temperature setting value is within the third temperature range, the abnormal battery cluster is cooled by the fire-fighting fan and the liquid cooling unit in the energy storage cabinet; When the difference between the third pressure value and the third pressure setting value is within a fourth pressure range and / or when the difference between the third temperature value and the third temperature setting value is within a fourth temperature range, the fire extinguishing device is activated to extinguish the abnormal battery cluster in the energy storage cabinet; When the difference between the third pressure value and the third pressure setting value exceeds the fourth pressure range value and / or when the difference between the third temperature value and the third temperature setting value exceeds the fourth temperature range, the fire extinguishing device is activated to extinguish the fire in the entire energy storage cabinet.

[0013] According to another aspect of an embodiment of the present invention, a multi-stage fire-fighting device for an energy storage cabinet is provided, the device comprising: A first fire protection module is used to obtain first detection data, wherein the first detection data is a first pressure value and / or a first temperature value of a PACK module or a 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 a PACK-level fire protection strategy to extinguish the energy storage cabinet; A second fire protection module is used to obtain second detection data, and determine whether the battery cluster is abnormal according to the second detection data. If so, the battery cluster is marked as an abnormal battery cluster, and a cluster-level fire protection strategy is executed to extinguish the energy storage cabinet; A third fire protection module is used to obtain third detection data, and determine whether the energy storage cabinet is abnormal according to 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 extinguish 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 on the energy storage cabinet.

[0014] According to another aspect of an embodiment of the present invention, there is provided an energy storage cabinet system, comprising: 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; The memory is used to store at least one executable instruction, and the executable instruction enables the processor to execute the operation of the multi-stage fire protection method of the energy storage cabinet as described above.

[0015] The present invention provides a multi-level fire protection method, device and energy storage cabinet system for energy storage cabinets, and its beneficial effects are: after detecting the abnormality of PACK, the present invention first uses the PACK-level fire protection strategy to extinguish the PACK module in the energy storage cabinet; after completing the fire protection of the PACK module, the second detection data is detected, and according to the second detection data, the battery cluster in the energy storage cabinet is extinguished through the cluster-level fire protection strategy; after completing the fire protection of the battery cluster, the third detection data is detected, and the energy storage cabinet is extinguished as a whole through the cabinet-level fire protection strategy. The present invention can accurately extinguish the PACK module or battery cluster in the energy storage cabinet through classification, avoiding damage to the energy storage cabinet caused by excessive firefighting.

[0016] The above description is only an overview of the technical solution of the example of the present invention. In order to more clearly understand the technical means of the embodiment of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the example of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings: Figure 1 The present invention provides a schematic flow chart of a multi-stage fire protection method for an energy storage cabinet according to Embodiment 1; Figure 2 The present invention provides a schematic diagram of the structure of a multi-stage fire-fighting device for an energy storage cabinet according to Embodiment 2; Figure 3 A schematic structural diagram of an energy storage cabinet system according to Embodiment 3 of the present invention is shown. DETAILED DESCRIPTION

[0018] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0019] Embodiment 1: Figure 1 A multi-stage fire protection method for an energy storage cabinet of the present invention is shown, which is applied to an energy storage cabinet having at least one battery cluster, wherein the battery cluster has at least one PACK module. The method comprises: 110, obtaining first detection data, wherein the first detection data is the first pressure value and / or the first temperature value of the PACK module or the battery cell in the energy storage cabinet; in step 110, a monitoring module may be set inside the single battery, or inside the battery module, and the monitoring module includes a pressure sensor and a temperature sensor, which are used to monitor the first pressure value and the first temperature value of the single battery cell or the 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.

[0020] 120, according to 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 fighting strategy to extinguish the energy storage cabinet, and obtain the second detection data after the fire fighting is completed; in step 120, when the first pressure value exceeds the preset first pressure setting value and / or when the first temperature value exceeds the 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 fighting is carried out through 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, and the second detection data includes the second pressure value and / or the second temperature value.

[0021] 130, judging whether the battery cluster is abnormal according to the second detection data, if so, marking the battery cluster as an abnormal battery cluster, executing the cluster-level fire fighting strategy to fire the energy storage cabinet, and obtaining the third detection data after the fire fighting is completed; in step 130, when the second pressure value exceeds the preset second pressure setting value and / or when the second temperature value exceeds the 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, according to 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 cluster-level fire fighting strategy is used to perform graded fire fighting on the battery cluster. 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.

[0022] 140, judging whether the energy storage cabinet is abnormal according to the third detection data, if so, marking the battery cluster as an abnormal energy storage cabinet, and executing the cabinet-level fire fighting strategy to fire the energy storage cabinet. In step 140, 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 fighting strategy is implemented to perform graded fire fighting on the energy storage cabinet according to 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.

[0023] After detecting the abnormality of PACK, the present invention first uses the PACK-level fire fighting strategy to extinguish the PACK module in the energy storage cabinet; after completing the fire fighting of the PACK module, the second detection data is detected, and according to the second detection data, the battery cluster in the energy storage cabinet is extinguished through the cluster-level fire fighting strategy; after completing the fire fighting of the battery cluster, the third detection data is detected, and the energy storage cabinet is extinguished as a whole through the cabinet-level fire fighting strategy. The present invention can accurately extinguish the PACK module or battery cluster in the energy storage cabinet through classification, avoiding damage to the energy storage cabinet caused by excessive fire fighting.

[0024] 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 an abnormal PACK module, and the PACK-level fire fighting strategy is executed to fire the energy storage cabinet, specifically including: when the first pressure value exceeds the preset first pressure setting value and / or when the first temperature value exceeds the 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 fighting is carried out through 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 battery management chip for comparison with the first pressure value and the first temperature value.

[0025] In this embodiment, different degrees of warning can be respectively given according to the magnitude of the first pressure value and the first temperature value. In a specific example, according to the first pressure value and the first temperature value, the PACK module graded warning is performed, specifically including: when the first pressure value is greater than or equal to the first pressure warning value and the first temperature value is within the first temperature warning value range, a level 1 alarm is executed; when the first pressure value is greater than or equal to the second pressure warning value and the first temperature value is within the second temperature warning value range, and the duration is greater than or equal to the first preset time, a level 2 alarm is executed; when the first pressure value is greater than or equal to the third pressure warning value and the first temperature value is within the third temperature warning value range, and the duration is greater than or equal to the second preset time, a level 3 alarm is executed; when the first pressure value is greater than or equal to the fourth pressure warning value and the first temperature value is within the fourth temperature warning value range, or when the first pressure value is greater than or equal to the third pressure warning value and the first temperature value is within the third temperature warning value range, and the duration is greater than or equal to the third preset time, a level 4 alarm is executed.

[0026] Among them, level 1 alarm is an internal warning, and level 2 alarm, level 3 alarm and level 4 alarm are to upload the alarm level of the PACK module to the elimination host for processing. The fire detector has a four-level warning function, and each level of warning corresponds to the latent period, warning period, alarm period and open flame period in the development process of thermal runaway fire. According to the alarm level, the alarm information output by the PACK module can be processed by the BMS system. The BMS sends a designated puncture valve opening signal to the fire host, starts the designated puncture valve through the IO module, starts the fire extinguisher, and performs PACK level protection, where the valve is the valve of the fire extinguisher.

[0027] In this embodiment, after the PACK-level protection strategy of the PACK module is completed, the cell pressure value or cell temperature value of the PACK module can continue to be obtained as the second detection data, or the temperature value or pressure value outside each PACK module can be detected by the detection module of the battery cluster as the second detection data, so as to provide the energy storage cabinet with a judgment basis for cluster-level fire protection. The second detection data includes a second pressure value and / or a second temperature value.

[0028] 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 an abnormal battery cluster, and a cluster-level fire fighting strategy is executed to fire the energy storage cabinet, specifically including: 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, a cluster-level fire fighting strategy is used to perform graded fire fighting on the battery cluster according to 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.

[0029] In a specific example, a cluster-level fire fighting strategy is used to perform hierarchical fire fighting on a battery cluster. The cluster-level fire fighting strategy of the present invention has a three-level hierarchical response. Through a multi-level fire fighting system, accurate fire fighting is performed on battery thermal runaway situations, including: In the first stage, when the difference between the second pressure value and the second pressure setting value is within the first pressure range and / or when the difference between the second temperature value and the second temperature setting value is within the first temperature range, the abnormal PACK module is cooled by the fire-fighting fan and the liquid cooling unit in the battery cluster; specifically, when the alarm level is slightly abnormal, local cooling and ventilation measures are initiated. When the detector collects information to the BMS, the BMS records the abnormal information collection point. The EMS issues a command, and the fire-fighting fan and the liquid cooling unit adjust the temperature control strategy for the abnormal PACK to reduce the temperature of the abnormal PACK.

[0030] In the second stage, when the difference between the second pressure value and the second pressure setting value is in the second pressure range and / or when the difference between the second temperature value and the second temperature setting value is in the second temperature range, the abnormal PACK module is sprayed by the nozzle and partition valve in the battery cluster; specifically, if the alarm level is obviously abnormal, the local fire extinguishing device of the corresponding PACK is activated. The PACK package is equipped with nozzles and partition valves for precise control. The fire host controls the fire extinguishing device and sprays the inside of the PACK package by the inlet nozzle to extinguish the fire efficiently.

[0031] In the third level, when the difference between the second pressure value and the second pressure setting value exceeds the second pressure range value and / or the difference between the second temperature value and the second temperature setting value exceeds the second temperature range, the fire extinguishing device is activated to extinguish the fire of the entire abnormal battery cluster. Specifically, if the alarm level is seriously abnormal, the whole cluster-level fire protection system is activated, and the faulty PACK is isolated. After the energy storage battery generates an open flame, the fire protection system outside the PACK package quickly sprays high-efficiency fire extinguishing agents to extinguish the battery open flame, preventing the flame from spreading to nearby lithium batteries and causing greater losses. The fire host controls the fire extinguishing device, the puncture valve is actuated, and the fire extinguishing agent is released in the cabinet outside the package. Measures for isolating the faulty PACK: Cut off the thermal runaway power supply and continue to cool the abnormal battery. The fire reaction of energy storage lithium batteries is special. The heat inside the battery will continue to accumulate. Even if the open flame is extinguished, it can still generate reactions and heat under oxygen-free conditions, and it is easy to reignite after the fire is extinguished. While extinguishing the open flame, cut off the thermal runaway power supply, and link the temperature control system to cool the battery, so that the diaphragm inside the battery will no longer continue to decompose and destroy, blocking the thermal runaway chain inside the battery and preventing the open flame from reigniting.

[0032] The present invention combines the cell pressure and cell temperature to realize system early warning. The BMS system can monitor, collect and analyze the pressure value data of the cells in each PACK in real time, and accurately evaluate and predict the health status, consistency status and service life of the battery. When the local fire extinguishing device of the PACK cannot solve the abnormality, the BMS system and the fire protection system are linked to automatically cut off the electrical connection of the faulty PACK to prevent further deterioration. The EMS sends a designated signal to the fire host to start the fire extinguisher for cluster-level protection. Among them, the second pressure setting value, the second temperature setting value, the first temperature range value, the first pressure range value, the second temperature range value, and the second pressure range value are stored in the register of the battery management chip of the battery cluster or the energy storage cabinet for comparison with the second pressure value and the second temperature value.

[0033] In some optional embodiments, after the cluster-level protection strategy of the battery cluster is completed, the third detection data is the detection data of the abnormal battery cluster or the detection data of the energy storage cabinet or the detection data of the PACK module, and the third detection data includes a third pressure value and / or a third temperature value.

[0034] 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 an abnormal energy storage cabinet, and a cabinet-level fire fighting strategy is executed to fire the energy storage cabinet, specifically including: When the third pressure value exceeds a preset third pressure setting value and / or when the third temperature value exceeds a 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, a cabinet-level fire fighting strategy is used to perform graded fire fighting on the energy storage cabinet according to 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.

[0035] In a specific example, according to 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, the energy storage cabinet is subjected to a cabinet-level fire fighting strategy for graded fire fighting, specifically including: In the first stage, when the difference between the third pressure value and the third pressure setting value is within the third pressure range and / or when the difference between the third temperature value and the third temperature setting value is within the third temperature range, the abnormal battery cluster is cooled by the fire-fighting fan and the liquid cooling unit in the energy storage cabinet; specifically, if the alarm level is slightly abnormal, local cooling and ventilation measures are initiated. When the detector collects information to the BMS, the BMS records the abnormal information collection point. The EMS issues a command, and the fire-fighting fan and the liquid cooling unit adjust the temperature control strategy for the abnormal PACK to reduce the temperature of the abnormal PACK.

[0036] In the second stage, when the difference between the third pressure value and the third pressure setting value is within the fourth pressure range and / or the difference between the third temperature value and the third temperature setting value is within the fourth temperature range, the fire extinguishing device is activated to extinguish the abnormal battery cluster in the energy storage cabinet; specifically, if the alarm level is obviously abnormal, the local fire extinguishing device at the corresponding cluster level is activated. After the energy storage battery generates an open fire, the fire fighting system in the cluster quickly sprays a high-efficiency fire extinguishing agent to extinguish the battery open fire, prevent the flame from spreading to nearby lithium batteries, and cut off the electrical connection of the faulty PACK.

[0037] At the third level, when the difference between the third pressure value and the third pressure setting value exceeds the fourth pressure range value and / or when the difference between the third degree value and the third temperature setting value exceeds the fourth temperature range, the fire extinguishing device is activated to extinguish the fire in the entire energy storage cabinet. Specifically, if the alarm level is seriously abnormal, the whole cabinet-level fire protection system is activated, the high-pressure gas fire extinguishing agent is released, and the smoke exhaust and pressure relief system is activated. All electrical connections of the corresponding abnormal cluster-level units are cut off to prevent the fire from further deteriorating. Among them, the third pressure setting value, the third temperature setting value, the third temperature range value, the third pressure range value, the fourth temperature range value, and the fourth pressure range value are stored in the register of the battery management chip of the energy storage cabinet for comparison with the third pressure value and the third temperature value.

[0038] The present invention combines the maximum pressure of the battery cell to realize system early warning on the basis of traditional temperature monitoring. The BMS system can monitor, collect and analyze the voltage, current, temperature and pressure value data of the battery cells in each PACK in real time, and accurately evaluate and predict the health status, consistency status and service life of the battery. When the cluster-level protection cannot solve the abnormality, the central control system and the BMS system are linked to automatically cut off all electrical connections to prevent further deterioration. Start the full cabinet-level fire protection system, release the high-pressure gas fire extinguishing agent, and start the smoke exhaust and pressure relief system.

[0039] Embodiment 2: Figure 2 A multi-stage fire-fighting device 200 of an energy storage cabinet of the present invention is shown. The device includes a first fire-fighting module 210 , a second fire-fighting module 220 , a third fire-fighting module 230 and a main control module 240 .

[0040] The first fire fighting module 210 is used to obtain the first detection data, wherein the first detection data is the first pressure value and / or the first temperature value of the PACK module or the battery cell in the energy storage cabinet; according to the first detection data, it is judged whether the PACK module is abnormal, if so, the PACK module is marked as an abnormal PACK module, and the PACK-level fire fighting strategy is executed to fire the energy storage cabinet; the first fire fighting module 210 specifically includes: by setting a monitoring module inside the single battery, or setting a monitoring module inside the battery module, the monitoring module includes a pressure sensor and a temperature sensor, which are used to monitor the first pressure value and the first temperature value of the single battery cell or the battery module. And 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 the preset first pressure setting value and / or when the first temperature value exceeds the 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 fighting is carried out through the first fire extinguishing device built into the PACK module.

[0041] The second fire fighting module 220 is used to obtain the second detection data, and determine whether the battery cluster is abnormal according to the second detection data. If so, the battery cluster is marked as an abnormal battery cluster, and the cluster-level fire fighting strategy is executed to fire the energy storage cabinet; the second fire fighting module 220 specifically includes: 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. When the second pressure value exceeds the preset second pressure setting value and / or when the second temperature value exceeds the 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 cluster-level fire fighting strategy is used to perform graded fire fighting on the battery cluster according to 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 a third pressure value and / or a third temperature value.

[0042] The third fire fighting module 230 is used to obtain the third detection data, and judge whether the energy storage cabinet is abnormal according to the third detection data. If so, the battery cluster is marked as an abnormal energy storage cabinet, and the cabinet-level fire fighting strategy is executed to fire the energy storage cabinet. The third fire fighting 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 fighting strategy is executed to perform graded fire fighting on the energy storage cabinet according to 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.

[0043] The main control module 240 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 on the energy storage cabinet. The main control module 240 is specifically used to sequentially fire the energy storage cabinets with abnormalities according to the PACK-level fire protection strategy, the cluster-level fire protection strategy and the cabinet-level fire protection strategy. Through classification, the PACK modules or battery clusters in the energy storage cabinet can be accurately extinguished to avoid damage to the energy storage cabinet caused by excessive fire protection.

[0044] Embodiment 3: Figure 3 The schematic diagram of the structure of an embodiment of the energy storage cabinet system of the present invention is shown. The specific embodiment of the present invention does not limit the specific implementation of the energy storage cabinet system.

[0045] like Figure 3 As shown, the energy storage cabinet system may include: a processor, a communication interface, a memory, and a communication bus.

[0046] The processor 310, the communication interface 340, and the memory 320 communicate with each other via the communication bus 330. The communication interface is used to communicate with other devices such as a client or other server network elements. The processor is used to execute the program 350, which can specifically execute the relevant steps in the above-mentioned embodiment of the vehicle-mounted key storage method.

[0047] Specifically, the program may include program code including computer executable instructions.

[0048] The processor may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention. The one or more processors included in the energy storage cabinet system may be processors of the same type, such as one or more CPUs; or processors of different types, such as one or more CPUs and one or more ASICs.

[0049] Memory is used to store programs. The memory may include high-speed RAM memory and may also include non-volatile memory, such as at least one disk storage.

[0050] The program can be called by the processor to enable the energy storage cabinet system to execute Figure 1 The following steps in step 1: 110, obtaining first detection data, wherein the first detection data is a first pressure value and / or a first temperature value of a PACK module or a battery cell in an energy storage cabinet; 120, judging whether the PACK module is abnormal according to the first detection data, if so, marking the PACK module as an abnormal PACK module, and executing the PACK-level fire fighting strategy to fire the energy storage cabinet, and obtaining the second detection data after the fire fighting is completed; 130, judging whether the battery cluster is abnormal according to the second detection data, and if so, marking the battery cluster as an abnormal battery cluster, executing a cluster-level fire fighting strategy to fire the energy storage cabinet, and obtaining third detection data after the fire fighting is completed; 140. Determine whether the energy storage cabinet is abnormal based on the third detection data. If so, mark the battery cluster as an abnormal energy storage cabinet and execute a cabinet-level fire fighting strategy to extinguish the energy storage cabinet.

[0051] After detecting the abnormality of PACK, the present invention first uses the PACK-level fire fighting strategy to extinguish the PACK module in the energy storage cabinet; after completing the fire fighting of the PACK module, the second detection data is detected, and according to the second detection data, the battery cluster in the energy storage cabinet is extinguished through the cluster-level fire fighting strategy; after completing the fire fighting of the battery cluster, the third detection data is detected, and the energy storage cabinet is extinguished as a whole through the cabinet-level fire fighting strategy. The present invention can accurately extinguish the PACK module or battery cluster in the energy storage cabinet through classification, avoiding damage to the energy storage cabinet caused by excessive fire fighting.

[0052] The algorithms or displays provided herein are not inherently related to any particular computer, virtual system or other device. In addition, the embodiments of the present invention are not directed to any particular programming language.

[0053] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. Similarly, in order to simplify the present invention and help understand one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, the various features of the embodiments of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. Wherein, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, wherein each claim itself is a separate embodiment of the present invention.

[0054] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and further may be divided into a plurality of submodules or subunits or subcomponents. Except that at least some of such features and / or processes or units are mutually exclusive.

[0055] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be understood as limitations on the order of execution.

Claims

1. A multi-stage fire protection method for energy storage cabinets, characterized in that: Applied to an energy storage cabinet having at least one battery cluster, wherein the battery cluster has at least one PACK module, the method comprises: Acquire first detection data, wherein the first detection data is a first pressure value and / or a first temperature value of a PACK module or a battery cell in the energy storage cabinet; According to 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 fighting strategy to fire the energy storage cabinet, and obtain the second detection data after the fire fighting is completed; According to the second detection data, determine whether the battery cluster is abnormal, if so, mark the battery cluster as an abnormal battery cluster, execute a cluster-level fire fighting strategy to extinguish the energy storage cabinet, and obtain third detection data after the extinguishing is completed; According to 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 a cabinet-level fire fighting strategy is executed to extinguish the energy storage cabinet.

2. The multi-stage fire protection method for energy storage cabinets according to claim 1, characterized in that: According to 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 fighting strategy is executed to fire the energy storage cabinet, specifically including: 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, firefighting is carried out through the first fire extinguishing device built into the PACK module.

3. The multi-stage fire protection method for energy storage cabinets according to claim 2 is characterized in that: The second detection data is detection data of the abnormal PACK module or 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.

4. The multi-stage fire protection method for energy storage cabinets according to claim 3 is characterized in that: According to the second detection data, whether the battery cluster is abnormal is determined, and if so, the battery cluster is marked as an abnormal battery cluster, and a cluster-level fire fighting strategy is executed to fight fire on the energy storage cabinet, specifically including: 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, a cluster-level fire fighting strategy is used to perform graded fire fighting on the battery cluster according to 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.

5. The multi-stage fire protection method for energy storage cabinets according to claim 4, characterized in that: The method of implementing a cluster-level fire fighting strategy for the battery cluster to perform hierarchical fire fighting according to 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 includes: When the difference between the second pressure value and the second pressure setting value is within the first pressure range and / or when the difference between the second temperature value and the second temperature setting value is within the first temperature range, the abnormal PACK module is cooled by the fire-fighting fan and the liquid cooling unit in the battery cluster; When the difference between the second pressure value and the second pressure setting value is within the second pressure range and / or when the difference between the second temperature value and the second temperature setting value is within the second temperature range, atomizing and spraying the abnormal PACK module is performed through the nozzles and partition valves in the battery cluster; When the difference between the second pressure value and the second pressure setting value exceeds the second pressure range and / or when the difference between the second temperature value and the second temperature setting value exceeds the second temperature range, the fire extinguishing device is activated to extinguish the fire of the entire abnormal battery cluster.

6. The multi-stage fire protection method for energy storage cabinets according to claim 4, characterized in that: The third detection data is detection data of an abnormal battery cluster or detection data of an energy storage cabinet, and the third detection data includes a third pressure value and / or a third temperature value.

7. The multi-stage fire protection method for energy storage cabinets according to claim 6, characterized in that: According to the third detection data, whether the energy storage cabinet is abnormal is determined, and if so, the energy storage cabinet is marked as an abnormal energy storage cabinet, and a cabinet-level fire fighting strategy is executed to fire the energy storage cabinet, specifically including: When the third pressure value exceeds a preset third pressure setting value and / or when the third temperature value exceeds a 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, a cabinet-level fire fighting strategy is used to perform graded fire fighting on the energy storage cabinet according to 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.

8. The multi-stage fire protection method for energy storage cabinets according to claim 7, characterized in that: The step of performing a cabinet-level fire fighting strategy on the energy storage cabinet to perform graded fire fighting according to 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 specifically includes: When the difference between the third pressure value and the third pressure setting value is within the third pressure range and / or when the difference between the third temperature value and the third temperature setting value is within the third temperature range, the abnormal battery cluster is cooled by the fire-fighting fan and the liquid cooling unit in the energy storage cabinet; When the difference between the third pressure value and the third pressure setting value is within a fourth pressure range and / or when the difference between the third temperature value and the third temperature setting value is within a fourth temperature range, the fire extinguishing device is activated to extinguish the abnormal battery cluster in the energy storage cabinet; When the difference between the third pressure value and the third pressure setting value exceeds the fourth pressure range value and / or when the difference between the third temperature value and the third temperature setting value exceeds the fourth temperature range, the fire extinguishing device is activated to extinguish the fire in the entire energy storage cabinet.

9. A multi-stage fire-fighting device for an energy storage cabinet, characterized in that: The device comprises: A first fire protection module is used to obtain first detection data, wherein the first detection data is a first pressure value and / or a first temperature value of a PACK module or a 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 a PACK-level fire protection strategy to extinguish the energy storage cabinet; A second fire protection module is used to obtain second detection data, and determine whether the battery cluster is abnormal according to the second detection data. If so, the battery cluster is marked as an abnormal battery cluster, and a cluster-level fire protection strategy is executed to extinguish the energy storage cabinet; A third fire protection module is used to obtain third detection data, and determine whether the energy storage cabinet is abnormal according to 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 extinguish 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 on the energy storage cabinet.

10. An energy storage cabinet system, characterized in that: include: A processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus; The memory is used to store at least one executable instruction, and the executable instruction enables the processor to execute the operation of the multi-stage fire protection method of the energy storage cabinet as described in any one of claims 1-8.

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