Fire extinguishing tarpaulin used after thermal runaway of battery of new energy vehicle

Abstract

The invention provides a fire extinguishing tarpaulin used after thermal runaway of a battery of a new energy vehicle, and mainly relates to the technical field of emergency fire extinguishing equipment. A fire extinguishing tarpaulin used after thermal runaway of a battery of a new energy vehicle comprises high-silica cloth and flame-retardant plates, a plurality of uniformly distributed flame-retardant plates are fixedly installed on one face of the high-silica cloth, and gaps are reserved between the adjacent flame-retardant plates; wherein the high silica cloth comprises a flame-retardant base layer and a flame-retardant coating layer, the flame-retardant coating layer is arranged on the outer side of the flame-retardant base layer, and the flame-retardant plate is fixedly installed on the outer side of the flame-retardant coating layer. The fire-extinguishing tarpaulin has the beneficial effects that through the double-layer design of the high-silica cloth and the arrangement of the flame-retardant plates, the fire-extinguishing tarpaulin provides multiple protection, and the fire-extinguishing effect of the device is improved.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of emergency fire extinguishing equipment, and specifically is a fire extinguishing tarpaulin for new energy vehicles after battery thermal runaway. Background Art

[0002] With the rapid development of the new energy vehicle industry, its safety and reliability issues have also received increasing attention. The power batteries used in new energy vehicles, especially lithium-ion batteries, may experience thermal runaway under extreme conditions such as overheating, short circuit or impact, leading to fire or even explosion. Such fires not only spread quickly, but are also difficult to control, posing great challenges to firefighting and rescue work.

[0003] Traditional fire-fighting methods for new energy vehicles, such as water-based fire extinguishers and dry powder fire extinguishers, can extinguish initial fires to a certain extent, but their fire-fighting effects are often limited for fires caused by battery thermal runaway. In addition, new energy vehicle fires are often accompanied by large amounts of smoke and toxic gases, posing a serious threat to the safety of rescue workers.

[0004] In order to cope with the severe challenge of new energy vehicle fires, the fire protection field urgently needs a new type of fire extinguishing equipment that can respond quickly after battery thermal runaway, effectively extinguish the fire, and protect the safety of rescuers. In this context, the fire extinguishing tarpaulin for new energy vehicle battery thermal runaway came into being.

[0005] The design of the fire extinguishing tarpaulin is inspired by the traditional fire blanket, but its materials and structure have been optimized and improved. The traditional fire blanket is mainly made of high temperature resistant and flame retardant materials, which can isolate the air and extinguish the flame. However, the fire temperature after thermal runaway of new energy vehicle batteries can reach 1043℃. The traditional fire blanket still has certain limitations in fire extinguishing effect, temperature resistance and protection ability. Therefore, a new fire extinguishing tarpaulin with a high temperature resistance of at least 1050℃ is needed. Summary of the invention

[0006] In order to solve the deficiencies of the prior art, the present invention provides a fire extinguishing tarpaulin after thermal runaway of a new energy vehicle battery, which is achieved through the following technical solutions: A fire extinguishing tarpaulin for batteries of new energy vehicles after thermal runaway, comprising a high-silica cloth and a flame retardant board, wherein a plurality of evenly distributed flame retardant boards are fixedly mounted on one side of the high-silica cloth, and gaps are left between adjacent flame retardant boards; The high-silica cloth comprises a flame-retardant base layer and a flame-retardant coating layer. The flame-retardant coating layer is arranged on the outer side of the flame-retardant base layer, and the flame-retardant plate is fixedly installed on the outer side of the flame-retardant coating layer. Furthermore, the flame retardant board is made of one or more materials selected from gypsum, magnesium material, calcium silicon material and silicate.

[0007] Furthermore, the flame retardant plate has a hexagonal structure, and the area of ​​the flame retardant plate is 5-10 cm².

[0008] Furthermore, the gap is filled with inorganic fiber materials that are resistant to high temperatures and have good heat absorption properties, such as ceramic fibers or glass fibers.

[0009] Furthermore, the flame retardant coating layer 102 is made of silica gel or vermiculite material, which has good fireproof and heat insulation properties, can effectively delay the spread of flames and reduce fire risks.

[0010] Furthermore, the flame retardant base layer 101 is made of high-silica glass fiber with a silicon dioxide content of ≥97%; the heat resistance temperature is 1100°C (no burning or melting in a muffle furnace for 2 hours), the short-term heat resistance can reach 1400-1500°C, and the softening point is 1700°C. It can quickly isolate oxygen, so that combustion cannot continue due to lack of oxygen, thereby achieving the purpose of extinguishing the fire.

[0011] Compared with the prior art, the beneficial effects of the present invention are: 1. Through the double-layer design of high-silica cloth (including flame-retardant base layer, flame-retardant coating layer) and the setting of flame-retardant board, this fire-extinguishing tarpaulin provides multiple protections. Each layer of material has its own function, such as isolating heat transfer, enhancing strength and durability, and improving flame retardant properties, etc., to jointly ensure the stability of the tarpaulin in high temperature environments and its efficient fire extinguishing ability. This design not only effectively slows down the speed of heat transfer to the inside of the tarpaulin and the area not directly exposed to the fire source, but also enables the fire extinguishing agent to quickly penetrate and cover the entire thermal runaway area, improving the speed and effect of fire extinguishing.

[0012] 2. The flame retardant board adopts a hexagonal structure and leaves appropriate gaps to promote air circulation. This design not only improves the overall strength of the tarpaulin, but also optimizes the air circulation path and enhances the fire extinguishing efficiency. At the same time, the area of ​​the flame retardant board is set moderately, which not only ensures effective function, but also avoids being too heavy, and is easy to carry and install. In addition, the materials used in the tarpaulin, such as silica gel, vermiculite, high-silica glass fiber, etc., are carefully selected to improve the durability and safety of the tarpaulin, ensuring that it can still maintain good physical properties and protective effects during emergency rescue or long-term exposure to harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the layered structure of the high-silica cloth of the present invention.

[0014] The numbers shown in the drawings are: 10, high-silica cloth; 20, flame-retardant board; 201, gap; 101, flame-retardant base layer; 102, flame-retardant coating layer. DETAILED DESCRIPTION

[0015] The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the application.

[0016] Embodiment: A fire extinguishing tarpaulin for new energy vehicle battery after thermal runaway like Figure 1-2 As shown, a fire extinguishing tarpaulin for a new energy vehicle battery after thermal runaway, the specific structure of which includes: High-silica cloth 10, flame-retardant board 20, a plurality of evenly distributed flame-retardant boards 20 are fixedly mounted on one side of the high-silica cloth 10, and gaps 201 are left between adjacent flame-retardant boards 20. This design not only improves the fire-extinguishing efficiency of the tarpaulin, but also ensures its stability in high-temperature environments; The high-silica cloth 10 includes a flame-retardant base layer 101 and a flame-retardant coating layer 102. The flame-retardant base layer 101 has high heat resistance and can withstand high temperatures above 1043°C. It can quickly isolate oxygen, so that combustion cannot continue due to lack of oxygen, thereby achieving the purpose of extinguishing the fire. The high-silica cloth can effectively prevent the high temperature of the flame from spreading to the surroundings, protecting other unburned parts of the car and nearby vehicles and items from high temperature invasion, and preventing the fire from spreading and expanding. The flame-retardant coating layer 102 is arranged on the outside of the flame-retardant base layer 101, which further improves the flame-retardant performance of the tarpaulin and reduces the invasion of heat on the inside of the tarpaulin. The flame-retardant plate 20 is fixedly installed on the outside of the flame-retardant coating layer 102 to form multiple protections, which greatly improves the fire-extinguishing and protection capabilities of the tarpaulin.

[0017] The above works like this: The device adopts a multi-layer structural design, so that the fire-extinguishing tarpaulin not only has excellent flame retardant properties, but also can effectively isolate the air and protect the surrounding environment from the influence of thermal runaway batteries. At the same time, the close combination of the flame retardant plate and the high-silica cloth improves the stability and durability of the overall structure. When extinguishing a fire, the fire-extinguishing tarpaulin is covered over the fire source to isolate the fire source from the air, thereby achieving a fire extinguishing effect. The setting of the flame retardant plate 20 can make the high-silica cloth 10 have better toughness, thereby ensuring the use effect of the device. The flame retardant board 20 is made of one or more materials selected from gypsum, magnesium material, calcium silicon material and silicate. These materials themselves have good fire resistance and impact resistance, can maintain structural stability in high temperature environments, are not easy to deform or crack, and can greatly improve the use effect of the device, ensuring that in extreme cases such as thermal runaway of new energy vehicle batteries, the tarpaulin can respond quickly and effectively extinguish the fire, while maintaining the integrity of the structure, and buying precious time for rescue work.

[0018] The flame retardant plate 20 is a hexagonal structure, and the area of ​​the flame retardant plate 20 is 5-10 cm².

[0019] The gap 201 is filled with inorganic fiber materials that are resistant to high temperatures and have good heat absorption properties, such as ceramic fibers or glass fibers, to enhance the thermal stability and heat insulation effect of the overall structure, and effectively slow down the speed of heat transfer to the area of ​​the tarpaulin that is not directly exposed to the fire source. This design allows the flame retardant panels to be arranged closely, while leaving appropriate gaps to promote air circulation and improve fire extinguishing efficiency. The hexagonal structure of the flame retardant panel not only improves the overall strength of the tarpaulin, but also optimizes the air circulation path, allowing the fire extinguishing agent to quickly penetrate and cover the entire thermal runaway area, thereby improving the speed and effect of fire extinguishing. At the same time, the appropriate area setting ensures that the flame retardant panel can not only play an effective role, but also will not be too bulky, making it easy to carry and install.

[0020] The flame retardant coating layer 102 not only has the basic flame retardant function to reduce the invasion of heat into the interior of the tarpaulin, but also improves the ablation resistance of the tarpaulin.

[0021] The flame retardant base layer 101 is made of high-silica glass fiber with a silicon dioxide content of ≥97%; the heat resistance temperature is 1100°C (no burning or melting in a muffle furnace for 2 hours), the short-term heat resistance can reach 1400-1500°C, and the softening point is 1700°C. When covering a new energy vehicle fire, it can quickly isolate oxygen, so that the combustion cannot continue due to lack of oxygen, thereby achieving the purpose of extinguishing the fire. The high-silica cloth can effectively prevent the high temperature of the flame from spreading to the surroundings, protect the car and reduce the degree of damage to the surrounding environment.

[0022] In the explanation of the present invention, it should be noted that the terminology indicating the orientation is only for the convenience of description and understanding, and is not the only limitation on the installation position of the specific technical features, and does not exclude other possible installation methods.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fire extinguishing tarpaulin for a new energy vehicle battery after thermal runaway, comprising a high-silica cloth (10) and a flame retardant board (20), characterized in that: A plurality of evenly distributed flame retardant plates (20) are fixedly mounted on one side of the high-silica cloth (10), with gaps (201) being left between adjacent flame retardant plates (20); The high-silica cloth (10) comprises a flame-retardant base layer (101) and a flame-retardant coating layer (102); the flame-retardant coating layer (102) is arranged on the outer side of the flame-retardant base layer (101); and the flame-retardant plate (20) is fixedly mounted on the outer side of the flame-retardant coating layer (102).

2. The fire extinguishing tarpaulin for battery thermal runaway of new energy vehicles according to claim 1, characterized in that: The flame retardant board (20) is made of one or more materials selected from the group consisting of gypsum, magnesium material, calcium silicon material and silicate.

3. A fire extinguishing tarpaulin for a new energy vehicle battery after thermal runaway according to claim 2, characterized in that: The flame retardant plate (20) has a hexagonal structure, and the area of ​​the flame retardant plate (20) is 5-10 cm².

4. A fire extinguishing tarpaulin for a new energy vehicle battery after thermal runaway according to claim 3, characterized in that: The gap (201) is filled with an inorganic fiber material that is resistant to high temperatures and has good heat absorption performance, such as ceramic fiber or glass fiber.

5. The fire extinguishing tarpaulin for battery thermal runaway of new energy vehicles according to claim 4, characterized in that: The flame retardant coating layer (102) is made of silica gel or vermiculite.

6. The fire extinguishing tarpaulin for battery thermal runaway of new energy vehicles according to claim 5, characterized in that: The flame retardant base layer (101) is made of high-silica glass fiber and has a silicon dioxide content of ≥97%.

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