Two-stage fire extinguishing protection structure of electrochemical energy storage lithium battery cabinet

Abstract

The utility model relates to the technical field of electrochemical energy storage protection, and discloses a two-stage fire extinguishing protection structure of an electrochemical energy storage lithium battery cabinet, which comprises a lithium battery cabinet, a plurality of groups of energy storage lithium battery boxes are mounted in the lithium battery cabinet, and a vertical partition plate is arranged in the middle of the lithium battery cabinet. A rack type detection and fire extinguishing all-in-one machine is mounted on one side, close to the energy storage lithium battery box, of the vertical partition plate; a composite detector and a package-level puncture valve are mounted on the front side of the energy storage lithium battery box; a non-pressure-storage type perfluorohexanone fire extinguishing device is installed on the inner wall of the side, located on the other side of the vertical partition plate, of the lithium battery cabinet, and a temperature sensing magnetic power generation assembly is installed on the top, located on the other side of the vertical partition plate, of the lithium battery cabinet. Compared with the prior art, the system has the advantages that two-stage protection is adopted, namely a mode of combining PACK battery box precise automatic fire extinguishing (pack-level fire extinguishing) and energy storage cabinet total flooding fire extinguishing (cabinet-level fire extinguishing) is adopted, and fire detection is carried out on an energy storage cabinet while early detection of a fire in the battery box is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemical energy storage protection, and specifically refers to a two-stage fire extinguishing protection structure of an electrochemical energy storage lithium battery cabinet. Background Art

[0002] With the application of energy storage technology, it can usually be divided into the power generation side, the user side and the grid side. On the user side, it is mainly used to cooperate with new energy systems such as photovoltaics to achieve self-generation and self-use, peak-valley price arbitrage, capacity-demand electricity fee management and improve power supply reliability.

[0003] As an important usage scenario for user-side energy storage, industrial and commercial scenarios have higher requirements on the safety performance of equipment compared to traditional energy storage power stations.

[0004] The problem of fire in electrochemical energy storage lithium battery cabinets is usually caused by thermal runaway of a single battery, which leads to the expansion of thermal runaway and causes the battery PACK box and battery cluster to catch fire, and gradually develops into combustion and explosion of the battery cabinet.

[0005] The fire prevention and control of energy storage cabinets outside the battery box mainly targets electrical fires caused by short circuits of auxiliary electrical appliances, circuits, and controllers, as well as providing auxiliary prevention and control for fires extending from the battery box.

[0006] In this regard, the present application proposes a two-stage fire extinguishing protection structure for an electrochemical energy storage lithium battery cabinet to solve the problem of fire in the electrochemical energy storage lithium battery cabinet and the problem of fire prevention and control of energy storage cabinets outside the battery box. Utility Model Content

[0007] 1. Technical Problems Solved

[0008] The technical problem to be solved by the utility model is the prevention and control of fires in electrochemical energy storage lithium battery cabinets and fires in energy storage cabinets outside battery boxes.

[0009] 2. Technical Solution

[0010] In order to solve the above technical problems, the technical solution provided by the utility model is: a two-stage fire extinguishing protection structure of an electrochemical energy storage lithium battery cabinet, comprising a lithium battery cabinet, wherein a plurality of energy storage lithium battery boxes are installed inside the lithium battery cabinet, a vertical partition is provided in the middle of the lithium battery cabinet, a rack-type detection and fire extinguishing integrated machine is installed on one side of the vertical partition close to the energy storage lithium battery box, and a composite detector and a pack-level puncture valve are installed on the front side of the energy storage lithium battery box;

[0011] A non-pressure storage type perfluorohexanone fire extinguishing device is installed on the inner wall of one side of the lithium battery cabinet on the other side of the vertical partition, and a temperature-sensitive magnetic power generation component is installed on the top of the lithium battery cabinet on the other side of the vertical partition.

[0012] As an improvement, an atomizing nozzle is installed on the package-level puncture valve.

[0013] As an improvement, the composite detector is connected to a package-level puncture valve.

[0014] As an improvement, multiple groups of package-level puncture valves are connected in series and connected to a rack-mounted integrated fire detection and extinguishing machine.

[0015] 3. Beneficial Effects

[0016] Compared with the prior art, the advantages of the utility model are: according to the structural form of industrial and commercial energy storage cabinets and the characteristics of fire, each energy storage cabinet is used as a protection zone, and two-level protection is adopted: the combination of PACK battery box precise automatic fire extinguishing (pack-level fire extinguishing) + energy storage cabinet full flooding fire extinguishing (cabinet-level fire extinguishing) can realize early detection of fire inside the battery box while also detecting fire in the energy storage cabinet. With each battery box as a protection unit and the overall energy storage cabinet as a peripheral protection unit, dual detection and prevention are achieved, effectively reducing the risk of fire;

[0017] The composite special fire detector can detect and analyze the environmental factors that cause fire, including hydrogen, carbon monoxide, VOC and other gases, and can effectively and accurately analyze the environmental changes in the early stage of fire;

[0018] The fire extinguishing agent is directly introduced into the battery box to rapidly cool the battery and block the combustion chain reaction at the same time, achieving both physical and chemical fire extinguishing methods, which can quickly extinguish the fire. It is more efficient and less damaging than any traditional fire extinguishing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a main structural schematic diagram of a two-stage fire extinguishing protection structure of an electrochemical energy storage lithium battery cabinet.

[0020] Figure 2 It is a three-dimensional diagram of a two-stage fire extinguishing protection structure of an electrochemical energy storage lithium battery cabinet of the utility model.

[0021] As shown in the figure: 1. Lithium battery cabinet; 2. Vertical partition; 3. Energy storage lithium battery box; 4. Composite detector; 5. Package-level puncture valve; 6. Rack-mounted detection and fire extinguishing machine; 7. Non-pressure storage perfluorohexanone fire extinguishing device; 8. Temperature-sensitive magnetic power generation component. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] As attached Figure 1 and attached Figure 2 As shown, a two-stage fire extinguishing protection structure of an electrochemical energy storage lithium battery cabinet includes a lithium battery cabinet 1, wherein a plurality of energy storage lithium battery boxes 3 are installed inside the lithium battery cabinet 1, a vertical partition 2 is provided in the middle of the lithium battery cabinet 1, a rack-type detection and fire extinguishing integrated machine 6 is installed on one side of the vertical partition 2 close to the energy storage lithium battery box 3, and a composite detector 4 and a pack-level puncture valve 5 are installed on the front side of the energy storage lithium battery box 3;

[0025] The package-level puncture valve 5 is equipped with an atomizing nozzle, the composite detector 4 is connected to the package-level puncture valve 5, and multiple groups of package-level puncture valves 5 are connected in series and connected to a rack-type detection and fire extinguishing integrated machine 6.

[0026] The above structure is the first-level protection: Pack-level protection (active protection) - using the battery cluster as the protection unit, box-type centralized detection + precise automatic suppression and extinguishing:

[0027] The composite detector 4, the rack-mounted integrated detection and fire extinguishing machine 6, the package-level puncture valve 5 and the atomizing nozzle on the package-level puncture valve 5 are used, and the fire extinguishing agent uses perfluorohexanone as the fire extinguishing (suppression) medium, which is efficient and environmentally friendly. The centralized detection is realized to the energy storage lithium battery box 3, and the fire extinguishing agent is accurately sprayed into the package, which can effectively extinguish the fire, reduce the temperature and suppress the re-ignition for up to 24 hours, realizing the box-type centralized detection and accurate automatic suppression and extinguishing.

[0028] Embodiment 2

[0029] Based on Example 1, please refer to the attached Figure 1 and attached Figure 2 A non-pressure storage type perfluorohexanone fire extinguishing device 7 is installed on the inner wall of one side of the lithium battery cabinet 1 located on the other side of the vertical partition 2, and a temperature-sensitive magnetic power generation component 8 is installed on the top of the lithium battery cabinet 1 located on the other side of the vertical partition 2.

[0030] The structure of the above-mentioned second embodiment is a two-level protection: cabinet-level protection (passive protection) - using the energy storage cabinet as a protection unit to quickly respond to fire extinguishing:

[0031] A temperature-sensitive magnetic power generation component 8 and a non-pressure-storage perfluorohexanone fire extinguishing device 7 are used. Once the temperature inside the cabinet exceeds the starting temperature of the temperature-sensitive magnetic power generation, the temperature-sensitive magnetic power generation component 8 will emit a pulse current to start the non-pressure-storage perfluorohexanone fire extinguishing device 7, fully flood the energy storage cabinet, and feed back the starting signal to the rack-mounted fire detection and extinguishing integrated machine 6.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0034] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A two-stage fire extinguishing protection structure for an electrochemical energy storage lithium battery cabinet, comprising a lithium battery cabinet (1), wherein a plurality of energy storage lithium battery boxes (3) are installed inside the lithium battery cabinet (1), characterized in that: A vertical partition (2) is provided in the middle of the lithium battery cabinet (1), a rack-type fire detection and extinguishing integrated machine (6) is installed on one side of the vertical partition (2) close to the energy storage lithium battery box (3), and a composite detector (4) and a pack-level puncture valve (5) are installed on the front side of the energy storage lithium battery box (3); A non-pressure storage type perfluorohexanone fire extinguishing device (7) is installed on the inner wall of one side of the lithium battery cabinet (1) located on the other side of the vertical partition (2), and a temperature-sensitive magnetic power generation component (8) is installed on the top of the lithium battery cabinet (1) located on the other side of the vertical partition (2).

2. A two-stage fire extinguishing protection structure for an electrochemical energy storage lithium battery cabinet according to claim 1, characterized in that: The package-level puncture valve (5) is provided with an atomizing nozzle.

3. The two-stage fire extinguishing protection structure of the electrochemical energy storage lithium battery cabinet according to claim 1 is characterized in that: The composite detector (4) is connected to the packet-level puncture valve (5).

4. The two-stage fire extinguishing protection structure of the electrochemical energy storage lithium battery cabinet according to claim 1 is characterized in that: A plurality of group-level puncture valves (5) are connected in series and are connected to a rack-type fire detection and extinguishing integrated machine (6).

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