Fire extinguishing device for inverted battery cell

Abstract

The utility model provides a kind of fire-fighting device of inverted battery, it is related to battery fire-fighting technical field, the fire-fighting device includes: shell, the inside of shell is equipped with cavity, the inside of cavity is used to arrange multiple inverted batteries;Hot melt pipe network, hot melt pipe network is laid between the bottom of cavity and the explosion valve of multiple inverted batteries, the input end of hot melt pipe network extends to the outside of shell;Storage tank, the inside of storage tank is equipped with fire extinguishing agent, the output end of storage tank is connected with the input end of hot melt pipe network;Realized quick fire response, accurate fire extinguishing coverage and efficient fire extinguishing agent utilization, can rapidly respond fire and trigger fire extinguishing agent release, effectively reduce the risk of fire spread, the fire-fighting device has significant effect on the inhibition of battery thermal runaway, and cost is lower, stability is highly reliable and space utilization is very high, significantly improve the safety and fireproof performance of inverted battery structure.

Description

Technical Field

[0001] This utility model belongs to the field of battery fire protection technology, and more specifically, relates to a fire protection device for an inverted battery cell. Background Technology

[0002] Inverted cell structure is one of the important innovative directions in battery technology in recent years. With its superior space utilization and improved current distribution, it has attracted fierce research and development from major cell manufacturers and OEMs. Through its innovative physical layout, the inverted cell structure shows significant potential in energy density, fast charging, and safety, making it particularly suitable for next-generation high-energy batteries (such as solid-state batteries and lithium metal batteries) and special application scenarios. However, the application of inverted cell structure in fire protection within battery packs is currently largely unexplored. Because the inverted cell structure changes the traditional cell layout, it may make it easier for heat to accumulate and transfer vertically within the cell. In the event of a fire, this altered propagation path could lead to rapid fire spread, increasing the difficulty of fire control. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a fire-fighting device with an inverted battery cell. This addresses the problem mentioned in the background art that, due to the inverted battery cell structure altering the traditional battery cell layout, its fire characteristics and response strategies differ significantly from those of traditional battery cells, increasing the difficulty of fire control when a fire occurs.

[0004] To achieve the above objectives, this utility model provides a fire-fighting device for inverted battery cells, the fire-fighting device comprising:

[0005] The housing has an interior cavity for arranging multiple inverted battery cells.

[0006] A hot-melt pipe network is laid between the bottom of the cavity and the explosion-proof valves of multiple inverted battery cells, and the input end of the hot-melt pipe network extends to the outside of the housing;

[0007] A storage tank containing a fire extinguishing agent, the outlet of which is connected to the inlet of the hot melt pipeline network.

[0008] Preferably, a gap is provided between the bottom of the cavity and the explosion-proof valve of the multiple inverted battery cells, and the hot-melt pipe network is laid in the gap.

[0009] Preferably, the height of the gap is 20 mm.

[0010] Preferably, the fire-fighting device for the inverted battery cells further includes a support frame connected to the inner side of the cavity, the support frame being used to support multiple inverted battery cells.

[0011] Preferably, the hot-melt pipeline is a fire-detection pipeline.

[0012] Preferably, the hot-melt pipe network comprises:

[0013] Input tube;

[0014] Pipeline network, wherein the pipeline network is provided with disconnection joints;

[0015] A three-way valve, wherein the three ports of the three-way valve are respectively connected to both ends of the disconnect port and one end of the input pipe.

[0016] Preferably, the pipeline network is rectangular.

[0017] Preferably, the pipeline network is rake-shaped.

[0018] This utility model provides a fire-fighting device for inverted battery cells, which has the following advantages: The device, designed specifically for the structural characteristics of inverted battery cells, lays a hot-melt pipe network between the bottom of the cavity and the explosion-proof valve of the inverted battery cell, and connects the hot-melt pipe network to the storage tank on the outside of the shell. This achieves rapid fire response, precise fire extinguishing coverage, and efficient use of extinguishing agents. It can quickly sense fires and trigger the release of extinguishing agents, effectively reducing the risk of fire spread. This fire-fighting device has a significant effect on suppressing thermal runaway of inverted battery cells, and is low in cost, highly reliable in stability, and has a very high space utilization rate, significantly improving the safety and fire resistance of the inverted battery cell structure.

[0019] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0021] Figure 1 A schematic diagram of the bottom structure of a fire-fighting device with an inverted battery cell according to an embodiment of the present invention is shown;

[0022] Figure 2 A three-dimensional structural schematic diagram of a fire-fighting device with an inverted battery cell according to an embodiment of the present invention is shown.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Shell; 2. Inverted battery cell; 3. Hot melt network; 31. Input pipe; 32. Piping network; 4. Storage tank. Detailed Implementation

[0025] Preferred embodiments of the present invention will now be described in more detail. While preferred embodiments of the present invention are described below, 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. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0026] like Figure 1 and Figure 2 As shown, this utility model provides a fire-fighting device for an inverted battery cell, the fire-fighting device comprising:

[0027] The housing 1 has an internal cavity for arranging multiple inverted cells 2.

[0028] The hot-melt pipe network 3 is laid at the bottom of the cavity between the explosion-proof valves of multiple inverted battery cells 2, and the input end of the hot-melt pipe network 3 extends to the outside of the housing 1.

[0029] Storage tank 4 contains fire extinguishing agent, and the output end of storage tank 4 is connected to the input end of hot melt pipeline network 3.

[0030] Specifically, to address the issue that the inverted battery cell structure alters the traditional battery cell layout, resulting in significantly different fire characteristics and response strategies compared to traditional battery cells, thus increasing the difficulty of fire control during a fire, this application provides a fire-fighting device for inverted battery cells. The housing 1 of this fire-fighting device is a sheet metal or aluminum housing, and the extinguishing agent is heptafluoropropane or perfluorohexanone. Targeting the structural characteristics of the inverted battery cell 2, the fire-fighting device lays a hot-melt pipe network 3 between the bottom of the cavity and the explosion-proof valve of the inverted battery cell, and connects the hot-melt pipe network 3 to a storage tank 4 on the outside of the housing 1. This achieves rapid fire response, precise fire extinguishing coverage, and efficient utilization of the extinguishing agent. It can quickly sense a fire and trigger the release of the extinguishing agent, effectively reducing the risk of fire spread. This fire-fighting device has a significant effect on suppressing thermal runaway of the inverted battery cell 2, and is low in cost, highly reliable in stability, and has a very high space utilization rate, significantly improving the safety and fire resistance of the inverted battery cell structure.

[0031] Preferably, a gap is provided between the bottom of the cavity and the explosion-proof valves of the multiple inverted battery cells 2, and the hot-melt pipe network 3 is laid in the gap.

[0032] Specifically, the gap height is 20mm, and the gap is used to lay the hot melt pipe network 3. Because the battery cell is installed upside down, the explosion-proof valve faces downward. After the upside-down battery cell 2 experiences thermal runaway, the explosion-proof valve ruptures and sprays downward onto the surface of the hot melt pipe network 3.

[0033] Preferably, the fire-fighting device for the inverted battery cell 2 further includes a support frame connected to the inside of the cavity, which is used to support multiple inverted battery cells 2.

[0034] Specifically, the support frame is an inverted T-shaped profile support structure used to support both sides of the inverted battery cell 2.

[0035] Preferably, the hot-melt pipe network 3 is a fire detection pipe network.

[0036] Specifically, the fire detection pipe structure of the fire detection pipe network is a linear pipe made of high-tech non-metallic synthetic materials, which has the characteristics of temperature sensing, flexibility and leak resistance. When the local temperature rises to the preset threshold, usually 160°C, the fire detection pipe network will soften and burst at the heated point, triggering the release mechanism of the extinguishing agent.

[0037] Preferably, the hot-melt pipe network 3 includes:

[0038] Input tube 31;

[0039] Pipeline network 32, with a break joint on it;

[0040] The three-way valve has its three ports connected to both ends of the disconnect port and one end of the input pipe 31, respectively.

[0041] Specifically, the three-way valve enables the connection between the input pipe 31 and the pipeline network 32.

[0042] Preferably, the pipeline network 32 is rectangular.

[0043] Specifically, for the layout of multiple inverted cells 2, a rectangular pipe network can cover multiple explosion-proof valves.

[0044] Preferably, the pipeline network 32 is rake-shaped.

[0045] Specifically, for the layout of multiple inverted battery cells 2, a rake-shaped pipe network can also cover multiple explosion-proof valves.

[0046] In summary, when the fire-fighting device for the inverted battery cell of this application is implemented, because the battery cell is installed upside down, the explosion-proof valve faces downwards. After the inverted battery cell 2 experiences thermal runaway, the explosion-proof valve ruptures and sprays downwards onto the surface of the fire detection pipeline network. The fire detection pipeline network is a linear pipe made of high-tech non-metallic synthetic materials, possessing characteristics such as temperature sensing, flexibility, and leak resistance. When the local temperature rises to a preset threshold, typically 160°C, the fire detection pipeline network softens and bursts at the heated point, triggering the extinguishing agent release mechanism. The extinguishing agent is sprayed directly into the cavity inside the inverted battery cell 2 and the shell 1 through the burst port of the fire detection pipeline network. The extinguishing agent fills the cavity at once, continuously suppressing the fire inside the shell 1. The storage tank 4 can be designed with sufficient redundancy. The extinguishing agent is either heptafluoropropane or perfluorohexanone, both of which can effectively isolate oxygen and absorb heat, thereby suppressing the fire inside the enclosure.

[0047] This fire-fighting device features a simple design, high reliability, and ease of maintenance and inspection. It also boasts excellent adaptability and compatibility, making it widely applicable to various inverted cell layouts and different extinguishing agent selections, significantly enhancing the safety and fire resistance of inverted cell structures.

[0048] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A fire-fighting device with an inverted battery cell, characterized in that, The fire-fighting device includes: The housing has an internal cavity for arranging multiple inverted battery cells, with the explosion-proof valves of the inverted battery cells facing downwards. A hot-melt pipe network is laid between the bottom of the cavity and the explosion-proof valves of multiple inverted battery cells, and the input end of the hot-melt pipe network extends to the outside of the housing; A storage tank containing a fire extinguishing agent, the outlet of which is connected to the inlet of the hot melt pipeline network.

2. The fire-fighting device with an inverted battery cell according to claim 1, characterized in that, A gap is provided between the bottom of the cavity and the explosion-proof valve of multiple inverted battery cells, and the hot-melt pipe network is laid in the gap.

3. A fire-fighting device with an inverted battery cell according to claim 2, characterized in that, The height of the gap is 20mm.

4. A fire-fighting device with an inverted battery cell according to claim 2, characterized in that, The fire-fighting device for the inverted battery cells also includes a support frame connected to the inside of the cavity, which is used to support multiple inverted battery cells.

5. A fire-fighting device with an inverted battery cell according to claim 1, characterized in that, The hot-melt pipeline network is a fire-detection pipeline network.

6. A fire-fighting device with an inverted battery cell according to claim 1, characterized in that, The hot-melt pipe network includes: Input tube; Pipeline network, wherein the pipeline network is provided with disconnection joints; A three-way valve, wherein the three ports of the three-way valve are respectively connected to both ends of the disconnect port and one end of the input pipe.

7. A fire-fighting device with an inverted battery cell according to claim 6, characterized in that, The pipeline network is rectangular.

8. A fire-fighting device with an inverted battery cell according to claim 6, characterized in that, The pipeline network is shaped like a rake.

9. A fire-fighting device with an inverted battery cell according to claim 1, characterized in that, The housing is a sheet metal housing or an aluminum housing.

10. A fire-fighting device with an inverted battery cell according to claim 1, characterized in that, The extinguishing agent is heptafluoropropane or perfluorohexanone.

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