Fireproof felt for battery compartment of new energy automobile

Abstract

The utility model relates to the technical field of fireproof felts, and discloses a fireproof felt for a battery compartment of a new energy automobile, which comprises a frame, a base material and a protective film, and an inner frame is arranged in the frame; the base materials are inserted into the inner side of the inner frame from the two ends of the frame respectively, and the butt joint faces of the two base materials are firmly bonded through the bonding layer. And the protective film is adhered to the outer surfaces of the base materials and the frame from the outer sides of the two base materials. The frame and the inner frame are silica gel frames which are integrally formed, the heat insulation layer is formed by overlapping conventional heat insulation materials with efficient heat insulation materials, and compared with a structure only provided with the heat insulation materials, the combined structure can reduce material cost on the premise of guaranteeing fireproof performance. Through the combination of the frame, the inner frame and the base material, the structure is simplified, and the number of layers is reduced, so that the weight is reduced, and the complexity of processing and mounting is reduced. And light materials such as the silica gel frame and the thin aerogel felt are adopted, so that the light weight target of the new energy automobile is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fireproof felts, and particularly relates to a fireproof felt for a battery compartment of a new energy vehicle. Background Art

[0002] For new energy vehicles that use battery compartments to provide energy, it has become an urgent problem for technicians in this field to prevent the battery from malfunctioning due to overheating or even catching fire, and to ensure the safe evacuation of personnel.

[0003] Therefore, in the prior art, to solve the above problems, a fireproof felt for a battery compartment of a new energy vehicle with the publication number of "CN206589403U" is disclosed. Its feature is that the cross-section of the fireproof felt has three layers. The upper layer is an upper carbon fiber cloth, the middle layer is a blended high-temperature cotton, the bottom layer is a bottom carbon fiber cloth, and the blended high-temperature cotton is filled with nano-powder in the middle to form a nano-powder layer;

[0004] For the above-mentioned fireproof felt, it is mainly used in the battery compartments of new energy electric buses and the fireproof components of automotive interior parts. Although it has fireproof and heat insulation functions, strong flame retardant function, does not burn when encountering an open flame, can withstand high temperatures up to 800 - 1000 °C, does not deform, and can block the open flame to ensure the safe evacuation of passengers. However, it still has the following obvious defects during use: Traditional fireproof felts are usually composed of multiple layers of materials, such as carbon fiber cloth and high-temperature cotton. Although these materials have excellent fireproof and heat insulation properties, they may be more complex during processing and installation, which may make the fireproof felt heavier and occupy more space. This may be disadvantageous for new energy vehicles because they usually pursue lightweight and high energy density. The design of multiple layers of materials may involve more materials and production steps, which may lead to an increase in cost. Traditional fireproof felts may require a specific layered structure to meet the requirements of fireproof and heat insulation, which may limit their ability to adapt to different battery compartment sizes and shapes. Summary of the Utility Model

[0005] The present invention aims to solve the technical problem that the splicing and bonding of multiple layers of materials in the above prior art may become complex during processing and installation, which may lead to a reduction in production efficiency and an increase in cost.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A fireproof felt for a battery compartment of a new energy vehicle, comprising a frame, a base material, and a protective film. An inner frame is provided inside the frame; there are two base materials, which are respectively inserted into the inner side of the inner frame from both ends of the frame and the butt surfaces of the two base materials are firmly bonded through an adhesive layer; the protective film is adhered to the outer surfaces of the two base materials and the frame from the outside.

[0008] Preferably, the inner part of the frame is divided by the inner frame into an inner slot located inside the inner frame and two outer slots on the inner side of the frame and outside both ends of the inner frame;

[0009] The inner slot communicates with the two outer slots.

[0010] Preferably, the base material includes an inner convex part inserted into the inner slot and a limiting part inserted into the outer slot and limited outside the inner frame.

[0011] Preferably, the frame and the inner frame are integrally formed silicone frames.

[0012] Preferably, the base material is made of glass fiber, pre-oxidized fiber or ceramic fiber felt.

[0013] Preferably, a heat insulation layer is bonded to the outer surface of the base material, and an organic or inorganic flame retardant adhesive layer is sprayed on the surface of the heat insulation layer. After the base material is installed in the frame, the outer surface of the heat insulation layer is flush with the outer surface of the frame.

[0014] Bonding the heat insulation layer to the outer surface of the base material and spraying the flame retardant adhesive layer on the surface of the heat insulation layer greatly improves the fire prevention performance of the battery compartment and reduces the risk of fire.

[0015] Preferably, the heat insulation layer is made of thin glass fiber or pre-oxidized fiber aerogel felt.

[0016] Preferably, the protective film is a PET or PI flame retardant film material.

[0017] Preferably, the frame, the base material, the protective film, the heat insulation layer and the bonding layer are hot-pressed to form a fireproof felt. This hot-pressed fireproof felt is suitable for separating battery panels and has a fireproof and heat insulation effect.

[0018] Preferably, an adhesive layer is provided on the outer side of one of the protective films, and the adhesive layer is bonded to the release paper.

[0019] By providing an adhesive layer on the hot-pressed fireproof felt and tearing off the release paper, the fireproof felt can be bonded to the inner wall surface of the battery box for use.

[0020] Compared with the prior art, the technical effects and advantages of the present utility model are as follows:

[0021] The fireproof felt for the battery compartment of new energy vehicles simplifies the structure and reduces the number of layers through the combination of the frame, the inner frame and the base material, thereby reducing the weight, saving space, and reducing the complexity of processing and installation. The use of lightweight materials such as silicone frames and aerogel felts helps to achieve the lightweight goal of new energy vehicles and improve the energy efficiency and performance of the vehicles. The integrally formed silicone frame and inner frame design helps to improve the sealing performance of the battery compartment, prevent the spread of heat and fire sources, and enhance the safety of the battery.

[0022] The base material is combined in a way that stacks conventional thermal insulation materials and new aerogel felt thermal insulation materials, making it have good thermal insulation performance and being able to reduce manufacturing costs, and can effectively reduce the impact of the heat generated in the battery compartment on the surrounding environment. The inner frame divides the inner part of the frame into an inner slot and an outer slot. The ingenious design makes the fireproof felt more firmly fixed on the battery compartment, improving the installation convenience. Using PI and PET films as protective films, they have good physical and chemical stability, can protect the base material from the influence of the external environment, and extend the service life of the fireproof felt. The thermal insulation layer bonded to the outer surface of the base material and the sprayed flame retardant adhesive layer enhance the structural stability of the product and further improve the fireproof performance of the battery compartment, reducing the risk of fire.

[0023] Through the hot pressing technology, the various layers of materials are combined together, ensuring a tight combination between the materials and improving the stability and reliability of the overall structure. The design of the new fireproof felt is more flexible, can adapt to battery compartments of different sizes and shapes, and improves the applicable range of the product. Although some high-performance materials are used, the overall design aims to reduce material usage, lower costs, while maintaining or improving the fireproof and thermal insulation performance.

[0024] Generally speaking, the design of this fireproof felt for new energy vehicle battery compartments not only improves safety performance, but also takes into account lightweight, installation convenience and cost-effectiveness, meeting the development trends and requirements of new energy vehicles. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present utility model;

[0026] Figure 2 It is an exploded view of Embodiment 1 of the present utility model;

[0027] Figure 3 It is a schematic structural diagram of the frame of the present utility model.

[0028] Figure 4 It is a schematic structural diagram of the base material of the present utility model;

[0029] Figure 5 It is an exploded view of Embodiment 2 of the present utility model.

[0030] In the figure: 1. Frame; 2. Inner frame; 3. Base material; 4. Protective film; 5. Inner slot; 6. Outer slot; 7. Inner convex part; 8. Limiting part; 9. Thermal insulation layer; 10. Flame retardant adhesive layer; 11. Bonding layer; 12. Adhesive layer; 13. Release paper. Detailed Embodiment

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] Embodiment 1

[0033] As Figures 1-4 shown, an embodiment of the present application discloses a fireproof felt for a new energy vehicle battery compartment, which includes a frame 1, a base material 3, and a protective film 4. An inner frame 2 is provided inside the frame 1; the frame 1 and the inner frame 2 are integrally formed silica gel frames. The integral molding of the frame 1 and the inner frame 2 helps to improve the durability and integrity of the product, reduce the gaps between components, and thus improve the sealing performance of the battery compartment.

[0034] The base material 3 is made of glass fiber, pre-oxidized fiber or ceramic fiber felt, and has good heat insulation performance, which can effectively reduce the influence of the heat generated during the operation of the battery compartment on the surrounding environment and ensure the safe operation of the battery. There are two pieces of the base material 3, which are respectively inserted into the inner side of the inner frame 2 from both ends of the frame 1, and the butt surfaces of the two pieces of the base material 3 are firmly bonded through an adhesive layer 11; the inner part of the frame 1 is divided into an inner slot 5 located inside the inner frame 2 and two outer slots 6 on the inner side of the frame 1 and outside both ends of the inner frame 2 through the inner frame 2; the inner slot 5 is communicated with the two outer slots 6. The base material 3 includes an inner convex part 7 inserted into the inner slot 5 and a limiting part 8 inserted into the outer slot 6 and limited outside the inner frame 2.

[0035] Dividing the inside of the frame 1 into the inner slot 5 and the outer slot 6 through the inner frame 2, such a design helps to improve the structural strength of the battery compartment and provides convenience for installation, enabling the fireproof felt to be more firmly fixed on the battery compartment and enhancing the overall safety. The design of the base material 3 includes the inner convex part 7 and the limiting part 8, which helps the base material 3 better adapt to the shapes of the frame 1 and the inner frame 2, increases the contact area between the fireproof felt and the battery compartment, and improves the bonding firmness and sealing performance.

[0036] An insulating layer 9 is bonded to the outer surface of the base material 3, and a flame retardant adhesive layer 10 is sprayed on the surface of the insulating layer 9. After the base material 3 is installed in the frame 1, the outer surface of the insulating layer 9 is flush with the outer surface of the frame 1.

[0037] Bonding the insulating layer 9 on the outer surface of the base material 3 and spraying an organic or inorganic flame retardant adhesive layer 10 on the surface of the insulating layer 9 greatly improves the fireproof performance of the battery compartment and reduces the risk of fire.

[0038] The heat insulation layer 9 is made of thin fiberglass, ceramic fiber, and pre-oxidized fiber aerogel felt. This further enhances the heat insulation effect of the heat insulation layer 9 and can also play a certain role in sound absorption and noise reduction. By using conventional heat insulation materials (fiberglass felt, ceramic fiber felt, pre-oxidized fiber felt) and stacking them with high-efficiency heat insulation materials (new high-efficiency heat insulation materials such as pre-oxidized fiber aerogel, ceramic fiber aerogel felt, and fiberglass aerogel), compared with the structure that only uses new heat insulation materials, this combined structure can reduce the material cost on the premise of ensuring fire protection performance.

[0039] The protective film 4 is adhered to the outer surfaces of the two substrates 3 and the frame 1 from the outside. The protective film 4 is a film material such as flame-retardant PET or flame-retardant PI.

[0040] PET film and PI film have excellent physical and chemical stability, which can protect the substrate 3 from the influence of the external environment and extend the service life of the fireproof felt.

[0041] Through the design of the frame 1 and the inner frame 2, the fireproof felt has better structural stability, can be effectively fixed inside the battery compartment, and is not easily displaced. The structure of the double-layer substrate 3 can provide better fire protection and heat insulation performance. The two substrates 3 are firmly bonded through the adhesive layer 11 to form a solid fireproof layer. The outer bonding of the protective film 4 can ensure a good seal on the outer surface of the fireproof felt, further improving the fire protection effect. The design of the inner frame 2 helps to isolate the heat of the battery compartment, prevent heat from being transferred to the outside of the battery compartment, and improve the safety of the battery.

[0042] The frame 1, the substrate 3, the protective film 4, the heat insulation layer 9, and the adhesive layer 11 are hot-pressed to form the fireproof felt. Through the hot-pressing technology, the frame 1, the substrate 3, the protective film 4, the heat insulation layer 9, and the adhesive layer 11 are combined to form the fireproof felt. This process can ensure that the layers are more closely combined, improving the stability and reliability of the overall structure. This hot-pressed fireproof felt is suitable for separating battery panels and plays a role in fire protection and heat insulation.

[0043] Compared with the traditional multi-layer material design, this fireproof felt simplifies the structure, reduces the number of layers, thereby reducing the weight, saving space, and reducing the complexity of processing and installation through the combination of the frame 1, the inner frame 2, and the substrate 3. The use of lightweight materials such as silicone frames and silica aerogel fiberglass felt helps to achieve the lightweight goal of new energy vehicles, improving the energy efficiency and performance of the vehicle. The integrated design of the silicone frame and the inner frame 2 helps to improve the sealing performance of the battery compartment, prevent the spread of heat and fire sources, and enhance the safety of the battery.

[0044] Example 2

[0045] As Figure 5As shown in the figure, on the basis of Embodiment 1, an adhesive layer 12 is provided on the outer side of one of the protective films 4, and the adhesive layer 12 is bonded to the release paper 13. By setting the adhesive layer 12 on the heat-pressed fireproof felt and tearing off the release paper 13, the fireproof felt can be bonded to the inner wall surface of the battery box for use.

[0046] Through the integrally formed design of the frame 1 and the inner frame 2, the durability and integrity of the product are improved, the gaps between components are reduced, and thus the sealing performance of the battery compartment is enhanced. The base material 3 is made of silica aerogel fiberglass felt, which has good heat insulation performance and can effectively reduce the impact of the heat generated in the battery compartment during operation on the surrounding environment, ensuring the safe operation of the battery. Through the process of hot pressing, the frame 1, the base material 3, the protective film 4, the heat insulation layer 9 and the bonding layer 11 are combined to form a fireproof felt, and this process can ensure that the combination between layers is tighter, improving the stability and reliability of the overall structure.

[0047] By providing the adhesive layer 12 on the outer side of the protective film 4, the fireproof felt can be more conveniently bonded to the inner wall surface of the battery box.

[0048] The fireproof felt for the battery compartment of a new energy vehicle has improvements and innovations in terms of structure, material and process. In the application of the fireproof felt in the battery compartment of a new energy vehicle, it can not only provide good fireproof and heat insulation effects, but also improve the installation convenience, reduce costs, and enhance the overall performance and safety of the product.

[0049] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fireproof felt for a battery compartment of a new energy vehicle, characterized in that, Including: A frame (1), with an inner frame (2) provided inside the frame (1); Two base materials (3), which are respectively inserted into the inner sides of the inner frame (2) from both ends of the frame (1), and the butt surfaces of the two base materials (3) are firmly bonded through an adhesive layer (11); A protective film (4), which is adhered to the outer surfaces of the base materials (3) and the frame (1) from the outer sides of the two base materials (3).

2. The fireproof felt for a battery compartment of a new energy vehicle according to claim 1, wherein: The inner part of the frame (1) is divided by the inner frame (2) into an inner slot (5) located inside the inner frame (2), and two outer slots (6) located on the inner side of the frame (1) and outside both ends of the inner frame (2); The inner slot (5) is communicated with the two outer slots (6).

3. The fireproof felt for a new energy vehicle battery compartment according to claim 2, wherein: The base material (3) includes an inner convex part (7) inserted into the inner slot (5) and a limiting part (8) inserted into the outer slot (6) and limited outside the inner frame (2).

4. A fireproof felt for a battery compartment of a new energy vehicle according to claim 1, characterized in that: The frame (1) and the inner frame (2) are integrally formed silicone frames.

5. A fireproof felt for a new energy vehicle battery compartment according to claim 1, characterized in that: The base material (3) is made of glass fiber, pre-oxidized fiber or ceramic fiber felt.

6. The fireproof felt for a new energy vehicle battery compartment according to claim 1, wherein: An insulating layer (9) is adhered to the outer surface of the base material (3), and an organic or inorganic flame-retardant adhesive layer (10) is sprayed on the surface of the insulating layer (9). After the base material (3) is installed into the frame (1), the outer surface of the insulating layer (9) is flush with the outer surface of the frame (1).

7. A fireproof felt for a battery compartment of a new energy vehicle according to claim 1, characterized in that: The insulating layer (9) is made of thin glass fiber, ceramic fiber, pre-oxidized fiber aerogel felt.

8. A fireproof felt for a new energy vehicle battery compartment according to claim 1, characterized in that: The protective film (4) is a PET or PI flame-retardant film material.

9. A fireproof felt for a battery compartment of a new energy vehicle according to claim 1, characterized in that: The frame (1), the base material (3), the protective film (4), the insulating layer (9) and the adhesive layer (11) are hot-pressed to form a fireproof felt.

10. The fireproof felt for a new energy vehicle battery compartment according to claim 9, wherein: An adhesive layer (12) is provided on the outer side of one of the protective films (4), and the adhesive layer (12) is adhered to the release paper (13).

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