Lithium battery fire treatment device

Abstract

The invention discloses a lithium battery fire treatment device, and relates to the field of lithium batteries, the lithium battery fire treatment device comprises a movable cart storage part and a fence plate stored on the cart storage part, and when the fence plate moves to an automobile fire position along with the cart storage part, the fence plate extends to the outer side of an automobile to form a closed annular structure. A rotatable supporting bottom plate is arranged at the bottom of the surrounding baffle, and the inner side of the surrounding baffle is detachably connected with a fire-fighting water pipe capable of allowing water to circulate. The lithium battery is rapidly cooled in a direct water immersion mode, the fire extinguishing time is greatly shortened, the fire extinguishing efficiency is remarkably improved, meanwhile, water resources in the fence are efficiently utilized, and compared with traditional water gun fire extinguishing, water consumption can be reduced, and the water resources are saved. And moreover, the risk that the lithium element is exposed in the air is avoided, secondary reburning is avoided, and the safety of firefighters is ensured. The system is suitable for various ground conditions and complex environments including limited spaces such as garages and roadways.

Description

Technical Field

[0001] The present invention relates to the field of lithium batteries, and in particular to a lithium battery fire treatment device. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as a power source, or use conventional automotive fuels but adopt new on-board power devices, and integrate advanced technologies in vehicle power control and driving to form vehicles with advanced technical principles, new technologies, and new structures. Pure electric vehicles among new energy vehicles are completely driven by electric motors and do not use any internal combustion engines. They store electrical energy through batteries and convert electrical energy into mechanical energy through electric motors to drive the vehicle.

[0003] With the widespread promotion of new energy vehicles, the safety of new energy vehicles has also become a prominent issue. Among accidents involving new energy vehicles, lithium battery fires account for a large proportion. Therefore, the quality of lithium batteries in new energy vehicles is directly related to their safety. If there are quality problems with the battery cell, such as unstable internal structure, material defects, etc., it may cause abnormal reactions in the battery during charging and discharging, thereby causing a fire. With the large-scale promotion of new energy vehicles, lithium battery fires have become a prominent issue in firefighting and rescue.

[0004] The current rescue method used in new energy vehicle fire accidents is mainly to cool down the lithium battery through a water gun. However, in actual operation, due to the extremely high heat released by the thermal runaway of the lithium battery, the fire source of the lithium battery embedded in the chassis of the car is difficult to be directly covered by water. The jet fire extinguishing method is slow to extinguish the fire. It is difficult to quickly cool down by spraying with a water gun alone. It often takes several hours, resulting in incomplete cooling and low fire extinguishing efficiency. At the same time, the water flow is dispersed during the water gun fire extinguishing process, which is not fully utilized, and it is easy to waste water resources. In addition, the operation risk of manual fire extinguishing is high. The contact between lithium elements and water may cause a violent chemical reaction, producing a large amount of flammable gas, which increases the risk of explosion during the fire extinguishing process. Summary of the invention

[0005] In response to the above problems, the present application provides a lithium battery fire handling device.

[0006] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a lithium battery fire handling device, comprising a movable cart storage portion and a baffle plate stored on the cart storage portion, when the baffle plate moves with the cart storage portion to the fire position of the car, the baffle plate extends to the outside of the car to form a closed ring structure.

[0007] A rotatable supporting base plate is provided at the bottom of the enclosure plate, and a fire hose for water circulation is detachably connected to the inner side of the enclosure plate. When the enclosure plate is arranged in a ring structure on the outside of the car, the supporting base plate, the enclosure plate and the ground are in contact, and the fire hose is pressed above the supporting base plate.

[0008] Furthermore, the cart storage portion and the surface of the baffle plate are provided with a first water inlet and a second water inlet at corresponding positions, and the first water inlet and the second water inlet are connected to a fire hose for conveying water to the inner side of the baffle plate, so that the water passes through the cart storage portion and the baffle plate and enters the enclosed space formed by the baffle plate.

[0009] Furthermore, the baffle plate is provided with a first water outlet and a second water outlet on one side thereof facing the first water inlet and the second water inlet, and used for discharging water liquid inside the baffle plate.

[0010] The first water outlet and the second water outlet are both compatible with a fire hose for conveying water to the inner side of the enclosure plate. When the fire hose is connected to the first water outlet and the second water outlet, the water can be located on the side of the enclosure plate away from the trolley storage portion and transported to the enclosed space formed by the enclosure plate.

[0011] Furthermore, a trolley base which can move synchronously with the trolley storage portion is provided at the bottom end of the trolley storage portion, and a roller group is provided on the trolley base.

[0012] Furthermore, a handle which can move synchronously with the baffle plate and the supporting bottom plate is provided on one side of the cart storage portion away from the baffle plate and the supporting bottom plate.

[0013] Furthermore, the cart storage portion is provided with a limiting tie that is compatible with the enclosing plate and the supporting bottom plate. When the enclosing plate and the supporting bottom plate are stored in an upright state on one side of the cart storage portion, the limiting tie is snap-connected to tightly bind the enclosing plate and the supporting bottom plate.

[0014] In summary, the technical effects and advantages of the present invention are as follows:

[0015] The present invention uses direct water immersion to quickly cool lithium batteries, greatly shorten the fire extinguishing time, and significantly improve the fire extinguishing efficiency. At the same time, the water resources in the enclosure are efficiently utilized, which can reduce water consumption and save water resources compared to traditional water gun fire extinguishing. In addition, water immersion fire extinguishing avoids the risk of lithium elements being exposed to the air, avoids secondary re-ignition, and ensures the safety of firefighters. It is suitable for various ground conditions and complex environments, including limited spaces such as garages and lanes, and has the characteristics of easy transportation and storage. After cleaning, it can be quickly stored and used for the next mission, and is easy to reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure from the second viewing angle of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure from the third viewing angle of the present invention.

[0020] Figure 4 It is a schematic diagram of the top structure of the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the enclosure plate and the supporting plate of the present invention in the stored state.

[0022] In the figure: 1. Cart storage part; 11. First water inlet; 12. Second water inlet; 13. Cart base; 14. Roller group; 15. Handle; 2. Enclosure plate; 21. First water outlet; 22. Second water outlet; 3. Support bottom plate; 4. Fire water pipe; 5. Limiting tie. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1: Reference Figure 1-4 A lithium battery fire handling device shown includes a movable cart storage portion 1 and a baffle plate 2 stored on the cart storage portion 1. When the baffle plate 2 moves with the cart storage portion 1 to the fire position of the car, the baffle plate 2 extends to the outside of the car to form a closed ring structure.

[0025] A rotatable supporting base plate 3 is provided at the bottom of the baffle plate 2, and a fire hose 4 for water circulation is detachably connected to the inner side of the baffle plate 2. When the baffle plate 2 is arranged in a ring structure on the outside of the car, the supporting base plate 3 and the baffle plate 2 are in contact with the ground, and the fire hose 4 is pressed above the supporting base plate 3. Water enters the enclosed space through the fire hose 4 to implement an immersion fire extinguishing operation on the lithium battery installed on the chassis of the car.

[0026] In this embodiment, the lithium battery is cooled quickly by direct water immersion, which greatly shortens the fire extinguishing time and significantly improves the fire extinguishing efficiency. At the same time, the water resources in the enclosure plate 2 are efficiently utilized, which can reduce water consumption and save water resources compared with traditional water gun fire extinguishing. Furthermore, during the operation, water immersion fire extinguishing avoids the risk of lithium elements being exposed to the air, avoids secondary re-ignition, ensures the safety of firefighters, and improves the safety of operation.

[0027] At the same time, when water enters the enclosed space through the fire water pipe 4, the fire water pipe 4 can be pressed tightly against the support base plate 3 under the pressure generated during the flow of water, which can effectively prevent the support base plate 3 from deflecting, ensure the tightness of the connection between the support base plate 3 and the ground, and effectively prevent water from overflowing, thereby improving the stability of the immersion fire extinguishing operation.

[0028] Specifically, Figure 2-4 As shown, the cart storage portion 1 and the surface of the baffle plate 2 are provided with a first water inlet 11 and a second water inlet 12 at corresponding positions, and the first water inlet 11 and the second water inlet 12 are both connected to a fire hose 4 for conveying water to the inner side of the baffle plate 2, so that water passes through the cart storage portion 1 and the baffle plate 2 and enters the enclosed space formed by the baffle plate 2.

[0029] In actual use, the enclosure height is designed to be 1.2-1.5m, and the length of a single module is 1.5-2m to ensure that it adapts to the chassis size of most new energy vehicles and is easy to arrange quickly. The filling time in the enclosed space depends on the flow rate of the fire hydrant. Calculated at a minimum flow rate of 10L / s, it takes about 3.6 minutes to fill the entire enclosure (6m long, 4m wide, and 1.5m high). If the water is only filled to 80% of the enclosure space, the time is shortened to 2.88 minutes.

[0030] The following is the theoretical data calculation verification:

[0031] (1) Calculation of heat absorbed by water: Formula: Q = m·c·ΔT, where: Q is the amount of heat absorbed (J), m is the mass of water (kg), c is the specific heat capacity of water (4186J / (kg·℃)), and ΔT is the rise in water temperature (assumed to be 20℃).

[0032] Assume that the enclosure is filled with 80% of water (assuming that the enclosure is 6m long, 4m wide, 1.5m high, the fire hydrant flow rate is 10L / s, 28.8m 3 ), the mass of water is 28800Kg. The heat absorbed is 2411136000J.

[0033] (2) Calculation of heat released by lithium battery fire: Assuming the total energy of the battery pack is 100 kWh (most battery packs currently have a capacity of around 60 kWh), and 40% is released in the form of heat, the heat released is 144,000,000 J.

[0034] (Q = E·f·heat release ratio = 100kWh×3600s / h×1000J / s×0.4=144000000J)

[0035] Comparison of extinguishing efficiency: The ratio of heat absorbed by the water in the enclosure to the heat released by the battery is 16.7, indicating that the amount of water in the enclosure is completely sufficient to extinguish the fire.

[0036] Furthermore, the first water outlet 21 and the second water outlet 22 for discharging the water inside the baffle plate 2 are provided on one side of the baffle plate 2 opposite to the first water inlet 11 and the second water inlet 12. When the water inside the baffle plate 2 accumulates to a certain height, it can be discharged from the first water outlet 21 and the second water outlet 22, which can effectively prevent the water from overflowing from the top of the baffle plate 2 and improve safety. At the same time, the provision of the first water outlet 21 and the second water outlet 22 can facilitate the water replacement operation in the enclosed space formed by the baffle plate 2, improve the cooling effect of the water, and further improve the fire extinguishing efficiency.

[0037] Embodiment 2: Based on embodiment 1, the first water outlet 21 and the second water outlet 22 are both matched with the fire hose 4 used to transport water to the inner side of the enclosure plate 2. In the process of water injection into the closed space formed by the enclosure plate 2, in order to improve the water injection efficiency, the fire hose 4 can be connected to the first water outlet 21 and the second water outlet 22, and the water can be transported to the closed space formed by the enclosure plate 2 on the side of the enclosure plate 2 away from the cart storage portion 1. The rising speed of the water in the closed space is further improved, and the fire extinguishing efficiency of the water on the lithium battery is improved.

[0038] like Figure 1-5 As shown, in order to maintain the stability of the cart storage portion 1 , a cart base 13 which can move synchronously therewith is provided at the bottom end of the cart storage portion 1 , and a roller set 14 is provided on the cart base 13 .

[0039] like Figure 1 , Figure 5 As shown, in order to facilitate the control of the movement of the cart storage part 1, a handle 15 that can move synchronously with the enclosing plate 2 and the supporting base plate 3 is provided on the side of the cart storage part 1 away from the enclosing plate 2 and the supporting base plate 3. The firefighter can operate the handle 15 to control the cart storage part 1 to move quickly under the action of the cart base 13 and the roller group 14.

[0040] Embodiment 3: Based on Embodiment 1 and Embodiment 2, Figure 1 , Figure 5As shown, the cart storage part 1 is provided with a limiting cable tie 5 that is compatible with the baffle plate 2 and the supporting bottom plate 3. After the fire is extinguished, the firefighters disassemble and clean the baffle plate 2 and the supporting bottom plate 3, and reload them onto the cart storage part 1. The entire device occupies a small space, is easy to store and transport, and can be repeatedly used for rescue missions in similar scenarios. The modular enclosure design is suitable for various ground conditions and complex environments, including limited spaces such as garages and alleys. The baffle plate 2, the supporting bottom plate 3 and the cart storage part 1 are all made of durable materials and can be quickly stored after cleaning and used for the next mission. The baffle plate 2 is of moderate height, which can accommodate enough water to immerse the lithium battery and is convenient for firefighters to operate. The length and diameter are suitable for the needs of single-vehicle fire extinguishing, while taking into account the characteristics of easy transportation and storage.

[0041] When the baffle plate 2 and the supporting bottom plate 3 are stored in an upright state at one side of the cart storage portion 1, the limiting tie 5 is connected in a buckle-type manner to tightly bind the baffle plate 2 and the supporting bottom plate 3. This effectively prevents the baffle plate 2 and the supporting bottom plate 3 from scattering during the synchronous movement with the cart storage portion 1, and improves the stability of the baffle plate 2 and the supporting bottom plate 3 during the movement with the cart storage portion 1.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery fire treatment device, characterized in that: The invention comprises a movable cart storage portion (1) and a baffle plate (2) stored on the cart storage portion (1); when the baffle plate (2) moves with the cart storage portion (1) to the fire position of the car, the baffle plate (2) extends to the outside of the car to form a closed annular structure; A rotatable supporting bottom plate (3) is provided at the bottom of the enclosure plate (2), and a fire hose (4) for water circulation is detachably connected to the inner side of the enclosure plate (2); when the enclosure plate (2) is arranged in an annular structure on the outer side of the automobile, the supporting bottom plate (3) and the enclosure plate (2) are in contact with the ground, and the fire hose (4) is pressed above the supporting bottom plate (3).

2. The lithium battery fire treatment device according to claim 1, characterized in that: The surfaces of the cart storage portion (1) and the baffle plate (2) are provided with a first water inlet (11) and a second water inlet (12) at corresponding positions. The first water inlet (11) and the second water inlet (12) are connected to a fire hose (4) for conveying water to the inside of the baffle plate (2), so that water passes through the cart storage portion (1) and the baffle plate (2) and enters the closed space formed by the baffle plate (2).

3. The lithium battery fire treatment device according to claim 2, characterized in that: The baffle plate (2) is provided with a first water outlet (21) and a second water outlet (22) for discharging water from the inner side of the baffle plate (2) on one side thereof facing the first water inlet (11) and the second water inlet (12); The first water outlet (21) and the second water outlet (22) are both compatible with a fire hose (4) for conveying water to the inner side of the enclosure plate (2); when the fire hose (4) is connected to the first water outlet (21) and the second water outlet (22), the water can be transported to the enclosed space formed by the enclosure plate (2) on the side of the enclosure plate (2) away from the trolley storage portion (1).

4. The lithium battery fire treatment device according to claim 1, characterized in that: The bottom end of the cart storage portion (1) is provided with a cart base (13) which can move synchronously therewith, and a roller group (14) is provided on the cart base (13).

5. The lithium battery fire treatment device according to claim 1, characterized in that: A handle (15) that can move synchronously with the baffle plate (2) and the supporting bottom plate (3) is provided on one side of the cart storage portion (1) away from the baffle plate (2) and the supporting bottom plate (3).

6. The lithium battery fire treatment device according to claim 1, characterized in that: The cart storage portion (1) is provided with a limiting tie (5) adapted to the enclosure plate (2) and the support base plate (3); when the enclosure plate (2) and the support base plate (3) are stored in an upright state on one side of the cart storage portion (1), the limiting tie (5) is connected in a snap-fit ​​manner to tightly bind the enclosure plate (2) and the support base plate (3).

Images