Aerogel flame-retardant heat-resisting sheet for power battery protection
By using a multi-layered aerogel flame-retardant heat insulation sheet, combined with the design of a support layer and a thermally conductive film, the problem of aerogel heat insulation sheet failure at high temperatures is solved, achieving efficient heat insulation protection for the power battery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG ZERO ELEMENT NEW ENERGY TECH CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-14
AI Technical Summary
Existing aerogel insulation sheets fail at high temperatures and cannot effectively protect the safety of power batteries.
The multi-layered aerogel flame-retardant insulation sheet includes a support layer, an aerogel layer, a hot melt adhesive mesh, and a protective layer. It utilizes a combination of different materials to improve the insulation effect and disperses heat through a heat-conducting film when the local temperature is too high, thus ensuring the overall insulation performance.
It achieves effective heat insulation for power batteries in high-temperature environments, reduces safety risks, and improves the stability and protective effect of the heat insulation sheet.
Smart Images
Figure CN224123397U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of heat insulation technology, specifically relating to an aerogel flame-retardant heat insulation sheet for the protection of power batteries. Background Technology
[0002] Aerogels, also known as dry gels, are formed when a gel loses most of its solvent, resulting in a much lower liquid content than solid content, or when the gel's spatial network structure is filled with a gaseous medium, giving it a solid appearance. Examples include gelatin, gum arabic, silica gel, hair, and nails. However, the thermal insulation properties of aerogels are limited, generally between -200 and 700°C. When the temperature exceeds 700°C, thermal insulation failure may occur. Since high temperatures pose safety hazards to power batteries, simple thermal insulation sheets still carry certain risks. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this utility model provides an aerogel flame-retardant heat insulation sheet for the protection of power batteries.
[0004] To achieve the above objectives, the present invention provides the following technical solution:
[0005] An aerogel flame-retardant heat insulation sheet for power battery protection includes a support layer, a first aerogel layer, a second aerogel layer, a frame structure, a first hot melt adhesive mesh, a second hot melt adhesive mesh, a first protective layer, and a second protective layer. The first aerogel layer is disposed at the upper end of the support layer, the second aerogel layer is disposed at the lower end of the support layer, the frame structure is disposed at both ends of the first aerogel layer and the second aerogel layer, the first hot melt adhesive mesh is disposed at the upper end of the first aerogel layer and the frame structure, the first protective layer is disposed at the upper end of the first hot melt adhesive mesh, the second hot melt adhesive mesh is disposed at the lower end of the second aerogel layer and the frame structure, and the second protective layer is disposed at the upper end of the second hot melt adhesive mesh.
[0006] Furthermore, the support layer includes a first thermally conductive film, a second thermally conductive film, and a support block. The first thermally conductive film is disposed at the lower end of the first aerogel layer, the second thermally conductive film is disposed at the upper end of the second aerogel layer, and the support block is disposed between the first thermally conductive film and the second thermally conductive film.
[0007] Furthermore, the support block is evenly distributed between the first thermally conductive film and the second thermally conductive film, and a cavity is formed between the support block and the first thermally conductive film and the second thermally conductive film. The support block is bonded to the first thermally conductive film and the second thermally conductive film.
[0008] Furthermore, if the thickness of the first aerogel layer is D1, the thickness of the second aerogel layer is D2, the thickness of the support layer is D3, and the thickness of the frame structure is D4, then D1 + D2 + D3 = D4.
[0009] Furthermore, the first aerogel layer and the second aerogel layer are made of one of silica aerogel, aluminum oxide aerogel, and titanium dioxide aerogel.
[0010] Furthermore, the first protective layer and the second protective layer are made of either biaxially oriented polypropylene film or aluminized film.
[0011] This utility model discloses an aerogel flame-retardant heat insulation sheet for the protection of power batteries. Compared with the prior art, its advantages lie in that it has a first aerogel layer and a second aerogel layer, which have good heat insulation effect and can achieve efficient heat insulation. In conjunction with the first and second thermally conductive films in the support layer, when the local temperature exceeds the heat insulation temperature of the first aerogel layer, it can disperse and reduce the temperature between the first and second aerogel layers. The heat insulation effect is then guaranteed by the second aerogel layer, which greatly reduces the risk of power batteries. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.
[0013] Figure 2 This is a schematic diagram of the support layer structure of a preferred embodiment of the present invention.
[0014] The reference numerals in the figures include: 10, first aerogel layer; 11, first hot melt adhesive mesh; 12, first protective layer; 20, second aerogel layer; 21, second hot melt adhesive mesh; 22, second protective layer; 30, frame structure; 40, support layer; 41, first thermally conductive film; 42, second thermally conductive film; 43, support block; 44, cavity. Detailed Implementation
[0015] This utility model discloses an aerogel flame-retardant heat insulation sheet for the protection of power batteries. The specific implementation of this utility model will be further described below with reference to preferred embodiments.
[0016] See attached diagram. Figure 1-2 , Figure 1 This is a schematic diagram of the structure of a preferred embodiment provided by this utility model. Figure 2 This is a schematic diagram of the structure of the support layer 40 in a preferred embodiment of the present invention.
[0017] Preferred embodiment.
[0018] This embodiment provides an aerogel flame-retardant heat insulation sheet for the protection of power batteries, including a support layer 40, a first aerogel layer 10, a second aerogel layer 20, a frame structure 30, a first hot melt adhesive mesh 11, a second hot melt adhesive mesh 21, a first protective layer 12, and a second protective layer 22. The first aerogel layer 10 is disposed at the upper end of the support layer 40, the second aerogel layer 20 is disposed at the lower end of the support layer 40, the frame structure 30 is disposed at both ends of the first aerogel layer 10 and the second aerogel layer 20, the first hot melt adhesive mesh 11 is disposed at the upper end of the first aerogel layer 10 and the frame structure 30, the first protective layer 12 is disposed at the upper end of the first hot melt adhesive mesh 11, the second hot melt adhesive mesh 21 is disposed at the lower end of the second aerogel layer 20 and the frame structure 30, and the second protective layer 22 is disposed at the upper end of the second hot melt adhesive mesh 21.
[0019] The first aerogel layer 10 and the second aerogel layer 20 are respectively disposed on both sides of the support layer 40. The frame structure 30 prevents the first aerogel layer 10 and the second aerogel layer 20 from detaching, ensuring the stability of the overall structure. The first protective layer 12 is bonded to the upper end of the first aerogel layer 10 using the first hot melt adhesive mesh 11, and the second protective layer 22 is bonded to the lower end of the second aerogel layer 20 using the second hot melt adhesive mesh 21. The first protective layer 12 and the second protective layer 22 can protect the overall structure. The first hot melt adhesive mesh 11 and the second hot melt adhesive mesh 21 are made of white glue, which has good adhesion.
[0020] Furthermore, the support layer 40 includes a first thermally conductive film 41, a second thermally conductive film 42, and a support block 43. The first thermally conductive film 41 is disposed at the lower end of the first aerogel layer 10, the second thermally conductive film 42 is disposed at the upper end of the second aerogel layer 20, and the support block 43 is disposed between the first thermally conductive film 41 and the second thermally conductive film 42. The first thermally conductive film 41 and the second thermally conductive film 42 are graphene thermally conductive films, and both the first aerogel layer 10 and the second aerogel layer 20 have extremely strong heat insulation effects, which can effectively achieve heat insulation.
[0021] Furthermore, the support blocks 43 are evenly distributed between the first thermally conductive film 41 and the second thermally conductive film 42, forming a cavity 44 between the support blocks 43 and the first and second thermally conductive films 41 and 42. The support blocks 43 are bonded to the first and second thermally conductive films 41 and 42. The support blocks 43 are thermally insulating support blocks, which not only support the first and second thermally conductive films 41 and 42, but also improve the overall thermal insulation effect. The cavity 44 can reduce the investment in support blocks 43, reducing costs, while also providing a certain degree of thermal insulation.
[0022] Furthermore, the thickness of the first aerogel layer 10 is D1, the thickness of the second aerogel layer 20 is D2, the thickness of the support layer 40 is D3, and the thickness of the frame structure 30 is D4, so D1 + D2 + D3 = D4. That is, the thickness of the frame structure 30 is the sum of the thicknesses of the first aerogel layer 10, the second aerogel layer 20, and the support layer 40, which can prevent the aerogel powder in the first aerogel layer 10 and the second aerogel layer 20 from falling off, thus ensuring the overall structural stability.
[0023] Furthermore, the first aerogel layer 10 and the second aerogel layer 20 are made of one of silica aerogel, aluminum oxide aerogel, and titanium dioxide aerogel to ensure the heat insulation effect of the first aerogel layer 10 and the second aerogel layer 20, that is, to ensure the heat insulation performance of the heat insulation sheet.
[0024] Furthermore, the first protective layer 12 and the second protective layer 22 are made of either biaxially oriented polypropylene film or aluminized film, which can protect the heat insulation sheet from both sides and reduce the risk of overall damage.
[0025] In the protection of power batteries, when the temperature is relatively uniform and not high, the first aerogel layer can provide heat insulation for the power battery. When the local temperature is too high, or even exceeds the heat insulation temperature of the first aerogel layer, the temperature at the other end of the first aerogel layer will rise. The first thermal conductive film can disperse the local high temperature, so that the temperature of the support layer drops to within the heat insulation temperature of the second aerogel layer, and then the second aerogel layer provides heat insulation, thus ensuring the overall heat insulation effect.
[0026] It is worth mentioning that the technical features of biaxially oriented polypropylene film or aluminized film involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control methods and spatial arrangement of these technical features can be conventionally selected in the field and should not be regarded as the utility model point of this utility model patent. This utility model patent will not elaborate further.
[0027] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An aerogel flame-retardant and heat-insulating sheet for the protection of power batteries, characterized in that, The system includes a support layer (40), a first aerogel layer (10), a second aerogel layer (20), a frame structure (30), a first hot melt adhesive mesh (11), a second hot melt adhesive mesh (21), a first protective layer (12), and a second protective layer (22). The first aerogel layer (10) is disposed at the upper end of the support layer (40), the second aerogel layer (20) is disposed at the lower end of the support layer (40), the frame structure (30) is disposed at both ends of the first aerogel layer (10) and the second aerogel layer (20), the first hot melt adhesive mesh (11) is disposed at the upper end of the first aerogel layer (10) and the frame structure (30), the first protective layer (12) is disposed at the upper end of the first hot melt adhesive mesh (11), the second hot melt adhesive mesh (21) is disposed at the lower end of the second aerogel layer (20) and the frame structure (30), and the second protective layer (22) is disposed at the upper end of the second hot melt adhesive mesh (21).
2. The aerogel flame-retardant heat insulation sheet for power battery protection according to claim 1, characterized in that, The support layer (40) includes a first thermally conductive film (41), a second thermally conductive film (42), and a support block (43). The first thermally conductive film (41) is disposed at the lower end of the first aerogel layer (10), the second thermally conductive film (42) is disposed at the upper end of the second aerogel layer (20), and the support block (43) is disposed between the first thermally conductive film (41) and the second thermally conductive film (42).
3. The aerogel flame-retardant heat insulation sheet for power battery protection according to claim 2, characterized in that, The support block (43) is evenly distributed between the first thermal conductive film (41) and the second thermal conductive film (42), and a cavity (44) is formed between the support block (43) and the first thermal conductive film (41) and the second thermal conductive film (42). The support block (43) is bonded to the first thermal conductive film (41) and the second thermal conductive film (42).
4. The aerogel flame-retardant heat insulation sheet for power battery protection according to claim 3, characterized in that, The thickness of the first aerogel layer (10) is D1, the thickness of the second aerogel layer (20) is D2, the thickness of the support layer (40) is D3, and the thickness of the frame structure (30) is D4, then D1+D2+D3=D4.
5. The aerogel flame-retardant heat insulation sheet for power battery protection according to claim 4, characterized in that, The first aerogel layer (10) and the second aerogel layer (20) are made of one of silica aerogel, aluminum oxide aerogel and titanium dioxide aerogel.
6. The aerogel flame-retardant heat insulation sheet for power battery protection according to claim 5, characterized in that, The first protective layer (12) and the second protective layer (22) are made of either biaxially oriented polypropylene film or aluminized film.