Method and system for graded fire early warning and fire extinguishing of energy storage square cabin

Abstract

The invention provides an energy storage square cabin fire hazard grading early warning and fire extinguishing method and system. The method comprises the following steps that environment parameters and battery parameters in each battery pack in an energy storage square cabin are monitored through a detection unit; according to the environmental parameters and the battery parameters obtained by the detection unit, the fire hazard condition is monitored, graded early warning is carried out, and when it is monitored that only VOC concentration in the battery pack exceeds the standard, a first-level alarm is given out, and the environmental parameter sampling frequency is increased; when a PACK-level fire disaster is monitored, a second-level alarm is given out, and PACK-level fire extinguishing operation is carried out; when a cluster-level fire disaster is monitored, a third-level alarm is given out, and cluster-level fire extinguishing operation is carried out; and when a cabin-level fire disaster is monitored, a fourth-level alarm is given out, and cabin-level fire extinguishing operation is carried out. The method has the beneficial effects that the fire extinguishing modes are divided into the PACK level, the cluster level and the cabin level, alarming and fire extinguishing of the corresponding levels are started according to the different levels, more comprehensive and efficient guarantee is provided for fire safety of the energy storage shelter, and the fire emergency response speed and efficiency in the energy storage shelter are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage cabin fire protection, and in particular relates to a method and system for graded early warning and fire extinguishing of energy storage cabin fire. Background Art

[0002] With the development and application of science and technology, the use of energy storage shelters has become more and more widespread, and the energy density of batteries in the energy storage industry has become higher and higher, which will lead to a rapid increase in complex fires caused by battery thermal failure. The energy storage shelter contains multiple battery clusters, and each battery cluster contains multiple PACKs (i.e. battery packs).

[0003] At present, a container energy storage system is usually equipped with a fire extinguishing device, which is installed on one side of the container; when the detection device alarms, the alarm signal is transmitted to the control device installed together with the fire extinguishing device, and the control device sends a start signal to control the start of the fire extinguishing device. This application method has the following disadvantages: when a fire occurs, only a single spray can be used, and the fire extinguishing strategy cannot be adjusted according to the size of the fire, and the fire extinguishing effectiveness is relatively poor; the detection alarm signal of the fire detection device is only transmitted to the control device of the container energy storage system itself, and is not remotely transmitted. The timeliness and accuracy of the alarm need to be further improved, and there are safety hazards. Summary of the invention

[0004] In view of this, the present invention aims to overcome the deficiencies of the above-mentioned problems in the prior art and proposes a method and system for graded early warning and fire extinguishing of energy storage cabin fires.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A method for graded early warning and fire extinguishing of energy storage cabin fires, comprising the following steps:

[0007] A. Monitor the environmental parameters and battery parameters of each battery pack in the energy storage cabin through the detection unit;

[0008] B. Monitor the fire situation based on the environmental parameters and battery parameters obtained by the detection unit, and make graded warnings.

[0009] When it is detected that only the VOC concentration in the battery pack exceeds the standard, a level one alarm is issued and the sampling frequency of environmental parameters is increased; when a PACK-level fire is detected, a level two alarm is issued and PACK-level fire extinguishing operations are carried out; when a cluster-level fire is detected, a level three alarm is issued and cluster-level fire extinguishing operations are carried out; when a cabin-level fire is detected, a level four alarm is issued and cabin-level fire extinguishing operations are carried out.

[0010] Furthermore, in step B, the fire situation judgment conditions are: when the detection unit monitors that the VOC concentration and CO concentration in the battery pack exceed the standard, the fire situation is judged to be a PACK-level fire; when the detection unit monitors that the VOC concentration, CO concentration and temperature in the battery pack exceed the standard, the fire situation is judged to be a cluster-level fire; when two or more battery packs or battery clusters are monitored to issue a level 2 or above alarm continuously, the fire situation is judged to be a cabin-level fire.

[0011] Furthermore, PACK-level fire extinguishing operations use a first PACK-level fire extinguishing device installed inside the battery pack, and / or a second PACK-level fire extinguishing device installed outside the battery cluster to extinguish the fire; cluster-level fire extinguishing operations use cluster-level fire extinguishing devices to extinguish the fire; and cabin-level fire extinguishing operations use cabin-level fire extinguishing devices to extinguish the fire.

[0012] Furthermore, in step B, the first level alarm, second level alarm, third level alarm and fourth level alarm are all issued on the remote control platform, and when the second level alarm and third level alarm are issued, an audible and visual alarm is also issued at the energy storage cabin.

[0013] The present application also provides a system for graded early warning and fire extinguishing of energy storage cabin fires, which is used to implement the above method, including:

[0014] The detection unit is installed in each battery pack to monitor the VOC concentration, CO concentration, H2 concentration, temperature, pressure and smoke information in the battery pack.

[0015] The first PACK-level fire extinguishing device is connected to each battery cluster through a first pipeline. A first branch pipeline is provided on the first pipeline corresponding to each battery cluster. A first nozzle connected to the corresponding first branch pipeline is provided in each battery pack, and a first control valve corresponding to each first nozzle is also provided on the first branch pipeline. A first cluster-level control valve is provided on each first branch pipeline near the first pipeline.

[0016] The second PACK-level fire extinguishing device is installed in each battery pack and cooperates with the first PACK-level fire extinguishing device for PACK-level fire extinguishing operations.

[0017] The cluster-level fire extinguishing device is used for cluster-level fire extinguishing operations. The cluster-level fire extinguishing device is connected to each battery cluster through a second pipeline. A second branch pipeline is provided on the second pipeline corresponding to each battery cluster. A second nozzle connected to the corresponding second branch pipeline is provided on the outside of each battery pack. A second cluster-level control valve is provided on each second branch pipeline near the second pipeline. The cluster-level fire extinguishing device is also connected to the first pipeline through a third pipeline, and a third control valve is provided on the third pipeline.

[0018] The cabin-level fire extinguishing device is installed in the energy storage cabin and is used for cabin-level fire extinguishing operations.

[0019] The remote control platform receives and processes the environmental parameters monitored by the detection unit, determines the fire situation and classifies it, issues instructions to control the corresponding level of fire extinguishing operations according to the fire level, and performs graded alarms at the same time.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] The method for graded early warning and fire extinguishing of energy storage cabin fires described in the present invention divides the fire extinguishing methods into three levels: PACK level, cluster level and cabin level, and initiates corresponding levels of alarm and fire extinguishing operations according to different fire levels, thereby providing more comprehensive and efficient protection for the fire safety of the energy storage cabin, greatly improving the speed and efficiency of fire emergency response in the energy storage cabin, and effectively improving the safety performance of the energy storage cabin, and also providing a strong guarantee for the sustainable development of the energy storage industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of performing PACK-level fire extinguishing operations in the energy storage cabin fire graded early warning and fire extinguishing system according to an embodiment of the present invention;

[0024] Figure 2 It is a structural schematic diagram of cluster-level fire extinguishing operation in the energy storage cabin fire graded warning and fire extinguishing system according to an embodiment of the present invention;

[0025] Figure 3 It is a structural schematic diagram of cabin-level fire extinguishing operations in the energy storage cabin fire graded warning and fire extinguishing system described in an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1. Battery pack; 2. Battery cluster; 3. First PACK-level fire extinguishing device; 4. First pipeline; 5. First branch pipeline; 6. First nozzle; 7. First control valve; 8. Energy storage cabin; 9. Cluster-level fire extinguishing device; 10. Second pipeline; 11. Second cluster-level control valve; 12. Second branch pipeline; 13. Second nozzle; 14. Cabin-level fire extinguishing device; 15. First cluster-level control valve. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0032] A method for graded early warning and fire extinguishing of energy storage cabin fires, comprising the following steps:

[0033] A. Monitor the environmental parameters and battery parameters in each battery pack 1 in the energy storage cabin 8 through the detection unit;

[0034] B. Monitor the fire situation based on the environmental parameters and battery parameters obtained by the detection unit, and make graded warnings.

[0035] When it is detected that only the VOC concentration in battery pack 1 exceeds the standard, a first-level alarm is issued and the sampling frequency of environmental parameters is increased; when a PACK-level fire is detected, a second-level alarm is issued and PACK-level fire extinguishing operations are carried out; when a cluster-level fire is detected, a third-level alarm is issued and cluster-level fire extinguishing operations are carried out; when a cabin-level fire is detected, a fourth-level alarm is issued and cabin-level fire extinguishing operations are carried out.

[0036] In step B, the fire situation judgment conditions are: when the detection unit monitors that the VOC concentration (i.e., organic volatile compound concentration) and CO concentration in the battery pack 1 exceed the standard, the fire situation is judged to be a PACK-level fire; when the detection unit monitors that the VOC concentration, CO concentration and temperature in the battery pack 1 exceed the standard, the fire situation is judged to be a cluster-level fire; when it is monitored that two or more battery packs 1 or battery clusters 2 continuously issue level 2 or above alarms, the fire situation is judged to be a cabin-level fire.

[0037] The PACK-level fire extinguishing operation uses the first PACK-level fire extinguishing device 3 installed inside the battery pack 1, and / or uses the second PACK-level fire extinguishing device installed outside the battery cluster 2 to extinguish the fire; the cluster-level fire extinguishing operation uses the cluster-level fire extinguishing device 9 to extinguish the fire; the cabin-level fire extinguishing operation uses the cabin-level fire extinguishing device 14 to extinguish the fire.

[0038] In step B, the first level alarm, second level alarm, third level alarm and fourth level alarm are all issued on the remote control platform, and when the second level alarm and third level alarm are issued, an audible and visual alarm is also issued at the energy storage cabin 8.

[0039] In this embodiment, the detection unit is built into the battery pack 1 and is used to collect relevant environmental parameters in the battery pack 1 in real time. When it is detected that only the VOC concentration in the battery pack 1 exceeds the standard, a first-level alarm is issued and the sampling frequency of environmental parameters is increased; when it is detected that the VOC concentration and CO concentration in the battery pack 1 exceed the standard, the fire detection device issues a second-level alarm, an audible and visual alarm, and starts the first PACK-level fire extinguishing device 3 and / or the second PACK-level fire extinguishing device to extinguish the fire. Of course, the PACK-level fire extinguishing device can also be manually started. At the same time, the more efficient cluster-level fire extinguishing device 9 can also be manually started; when it is detected that the VOC concentration, CO concentration and temperature in the battery pack 1 exceed the standard, the cluster-level fire extinguishing device 9 is started to extinguish the fire; when it is detected that two or more battery packs 1 or battery clusters 2 continuously issue second-level or higher alarms, the cabin-level fire extinguishing device 14 is started.

[0040] As shown in the figure, the present application also provides a system for graded early warning and fire extinguishing of energy storage cabin fire, which is used to implement the above method, including:

[0041] The detection unit is installed in each battery pack 1 and is used to monitor the VOC concentration, CO concentration, H2 concentration, temperature, pressure and smoke information in the battery pack 1. In this embodiment, the detection unit is a multi-parameter composite detector.

[0042] The first PACK-level fire extinguishing device 3 is connected to each battery cluster 2 through a first pipe 4. A first branch pipe 5 is provided on the first pipe 4 corresponding to each battery cluster 2. A first nozzle 6 connected to the corresponding first branch pipe 5 is provided in each battery pack 1, and a first control valve 7 corresponding to each first nozzle 6 is also provided on the first branch pipe 5. A first cluster-level control valve 15 is provided on each first branch pipe 5 near the first pipe 4. When performing a PACK-level fire extinguishing operation, the battery pack 1 with a fire is selected, and the first cluster-level control valve 15 on the corresponding first branch pipe 5 and the first control valve 7 in the battery pack 1 are controlled to open, so that the fire extinguishing medium is sprayed from the first PACK-level fire extinguishing device 3 through the corresponding first nozzle 6, and the battery pack 1 is subjected to PACK-level fire extinguishing. Of course, in this embodiment, a second control valve is provided on the first pipe 4 near the outlet of the first PACK-level fire extinguishing device 3 to control the connection between the first PACK-level fire extinguishing device 3 and the first pipe 4.

[0043] The second PACK-level fire extinguishing device is installed in each battery pack 1 and cooperates with the first PACK-level fire extinguishing device 3 for PACK-level fire extinguishing operations. Here, you can choose to use the first PACK-level fire extinguishing device 3 or the second PACK-level fire extinguishing device according to the fire situation, or choose to use both.

[0044] The cluster-level fire extinguishing device 9 is used for cluster-level fire extinguishing operations. The cluster-level fire extinguishing device 9 is connected to each battery cluster 2 through a second pipe 10. A second branch pipe 12 is provided on the second pipe 10 corresponding to each battery cluster 2. A second nozzle 13 connected to the corresponding second branch pipe 12 is provided on the outside of each battery pack 1. A second cluster-level control valve 11 is provided on each second branch pipe 12 near the second pipe 10. The cluster-level fire extinguishing device 9 is also connected to the first pipe 4 through a third pipe (not shown in the figure), and a third control valve is provided on the third pipe, so that the cluster-level fire extinguishing device 9 and the first PACK-level fire extinguishing device 3 share a set of control batteries. The pipes and nozzles used for fire extinguishing inside the pack 1, that is, when a cluster-level fire is extinguished on a battery cluster 2, the cluster-level fire extinguishing device 9 is controlled to be started, and the second cluster-level control valve 11 is started, so that the fire extinguishing medium in the cluster-level fire extinguishing device 9 is sprayed out from the second nozzle 13 on the second branch pipe 12 through the second pipe 10 and the corresponding second branch pipe 12 to extinguish the fire outside the battery cluster 2, and at the same time, the third control valve, the first cluster-level control valve 15 and the corresponding first control valve 7 are opened, so that the fire extinguishing medium in the cluster-level fire extinguishing device 9 is sprayed out from the first nozzle 6 through the third pipe, the first pipe 4 and the first branch pipe 5 in sequence to extinguish the fire inside the battery pack 1 in the battery cluster 2,

[0045] The cabin-level fire extinguishing device 14 is arranged in the energy storage cabin 8 and is used for cabin-level fire extinguishing operations.

[0046] The remote control platform receives and processes the environmental parameters monitored by the detection unit, determines the fire situation and classifies it, issues instructions to control the corresponding level of fire extinguishing operations according to the fire level, and performs graded alarms at the same time. In this embodiment, the self-starting control valves involved are all controlled to open and close through the remote control platform.

[0047] In this embodiment, the first PACK-level fire extinguishing device 3 is a perfluorohexanone fire extinguishing device, the second PACK-level fire extinguishing device is a perfluorohexanone fire extinguishing device or a heptafluoropropane fire extinguishing device, the cluster-level fire extinguishing device 9 is a high-pressure fine water mist fire extinguishing device, and the cabin-level fire extinguishing device 14 is a flooded, fully covered CAFS fire water cannon.

[0048] In addition, in this embodiment, an audible and visual alarm is installed on the outside of the energy storage cabin 8, and its alarm is controlled by a remote control platform. When a second-level alarm or a third-level alarm is issued, the audible and visual alarm is activated at the same time to issue an audible and visual alarm.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for graded early warning and fire extinguishing of energy storage cabin fire, characterized in that: The following steps are involved: A. Monitor the environmental parameters and battery parameters of each battery pack in the energy storage cabin through the detection unit; B. Monitor the fire situation based on the environmental parameters and battery parameters obtained by the detection unit, and issue graded warnings. When it is detected that only the VOC concentration in the battery pack exceeds the standard, a level one alarm is issued and the sampling frequency of environmental parameters is increased; when a PACK-level fire is detected, a level two alarm is issued and PACK-level fire extinguishing operations are carried out; when a cluster-level fire is detected, a level three alarm is issued and cluster-level fire extinguishing operations are carried out; when a cabin-level fire is detected, a level four alarm is issued and cabin-level fire extinguishing operations are carried out.

2. A method for graded early warning and fire extinguishing of energy storage cabin fire according to claim 1, characterized in that: In step B, the fire situation judgment conditions are: when the detection unit monitors that the VOC concentration and CO concentration in the battery pack exceed the standard, the fire situation is judged to be a PACK-level fire; when the detection unit monitors that the VOC concentration, CO concentration and temperature in the battery pack exceed the standard, the fire situation is judged to be a cluster-level fire; when two or more battery packs or battery clusters are monitored to issue a level 2 or above alarm continuously, the fire situation is judged to be a cabin-level fire.

3. A method for hierarchical early warning and fire extinguishing of energy storage cabin fire according to claim 1, characterized in that: The PACK-level fire extinguishing operation uses a first PACK-level fire extinguishing device installed inside the battery pack, and / or uses a second PACK-level fire extinguishing device installed outside the battery cluster to extinguish the fire; Cluster-level fire-fighting operations use cluster-level fire-fighting equipment to extinguish fires; cabin-level fire-fighting operations use cabin-level fire-fighting equipment to extinguish fires.

4. A method for hierarchical early warning and fire extinguishing of energy storage cabin fire according to claim 1, characterized in that: In step B, the first level alarm, second level alarm, third level alarm and fourth level alarm are all warned on the remote control platform, and when the second level alarm and third level alarm are carried out, an audible and visual alarm is also issued at the energy storage cabin.

5. A system for graded early warning and fire extinguishing of energy storage cabin fires, characterized in that: A method for executing graded early warning and fire extinguishing of energy storage cabin fires as described in any one of claims 1 to 4.

6. A system for hierarchical early warning and fire extinguishing of energy storage cabin fire according to claim 5, characterized in that: include: The detection unit is installed in each battery pack to monitor the VOC concentration, CO concentration, H2 concentration, temperature, pressure and smoke information in the battery pack. The first PACK-level fire extinguishing device is connected to each battery cluster through a first pipeline. A first branch pipeline is provided on the first pipeline corresponding to each battery cluster. A first nozzle connected to the corresponding first branch pipeline is provided in each battery pack, and a first control valve corresponding to each first nozzle is also provided on the first branch pipeline. A first cluster-level control valve is provided on each first branch pipeline near the first pipeline. The second PACK-level fire extinguishing device is installed in each battery pack and cooperates with the first PACK-level fire extinguishing device for PACK-level fire extinguishing operations. The cluster-level fire extinguishing device is used for cluster-level fire extinguishing operations. The cluster-level fire extinguishing device is connected to each battery cluster through a second pipeline. A second branch pipeline is provided on the second pipeline corresponding to each battery cluster. A second nozzle connected to the corresponding second branch pipeline is provided on the outside of each battery pack. A second cluster-level control valve is provided on each second branch pipeline near the second pipeline. The cluster-level fire extinguishing device is also connected to the first pipeline through a third pipeline, and a third control valve is provided on the third pipeline. The cabin-level fire extinguishing device is installed in the energy storage cabin and is used for cabin-level fire extinguishing operations. The remote control platform receives and processes the environmental parameters monitored by the detection unit, determines the fire situation and classifies it, issues instructions to control the corresponding level of fire extinguishing operations according to the fire level, and performs graded alarms at the same time.

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