Aerogel heat insulation sheet
By adopting a three-layer structure design on the aerogel heat insulation sheet for lithium batteries, combining a thin film layer and a flame-retardant coating, the problem of reduced voltage resistance and heat insulation performance after the thickness is reduced is solved, achieving excellent voltage resistance and heat insulation performance at a thickness of less than 0.5mm.
Patent Information
- Application Number
- CN202422932919.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2034-11-29
AI Technical Summary
When the thickness of existing aerogel heat insulation sheets for lithium batteries is less than 0.5mm, it is difficult to maintain good voltage resistance and heat insulation performance at the same time. The thickness of the six-sided film coating method is insufficient, and the material of the six-sided flame retardant coating method is too thin to provide effective protection.
The aerogel insulation sheet adopts a three-layer structure, including a film on one side and a flame-retardant coating on the other. The thickness and composition of the film layer and the flame-retardant coating are specifically configured so that the insulation sheet thickness is less than 0.5mm, while having good voltage resistance and heat insulation performance.
It achieves excellent voltage resistance and thermal insulation performance in aerogel insulation sheets with a thickness of less than 0.5 mm, improving the overall voltage resistance performance. In particular, the design of using a thin film layer on some exposed surfaces further enhances the overall voltage resistance performance.
Smart Images
Figure CN223815759U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of aerogel heat insulation sheet, belong to lithium battery heat insulation technical technical field. BACKGROUND
[0002] The aerogel heat insulation sheet for lithium battery is a kind of aerogel composite heat insulation material based on silica aerogel and ceramic fiber substrate composite, with many excellent properties.The existing aerogel heat insulation sheet for lithium battery mainly uses six face film or six face flame-retardant coating to improve the heat insulation, flame-retardant and voltage resistance performance of heat insulation sheet, in order to ensure the heat insulation performance and voltage resistance performance, its thickness is above 0.5mm.At present, with the development of technology, the thickness of aerogel heat insulation sheet needs to be below 0.5mm, the six face film cannot reach the index;The six face flame-retardant coating cannot play better voltage resistance performance due to the too thin aerogel material. SUMMARY
[0003] The technical problem to be solved by the utility model is to provide an aerogel heat insulation sheet, which is coated with a flame-retardant coating on one heat insulation surface and a narrow edge, and the other heat insulation surface is coated with a film, so that the product has good voltage resistance and heat insulation performance while the thickness is below 0.5mm.
[0004] The utility model discloses the following scheme realizes: a kind of aerogel heat insulation sheet, including three-layer structure, heat insulation sheet main body, film layer and flame-retardant coating, the film layer is set on one side of the heat insulation sheet main body, the flame-retardant coating is set on the other side of the heat insulation sheet main body.
[0005] The film layer is heat-sealed on the A surface of the heat insulation sheet main body, and the film layer is an insulating film.
[0006] The flame-retardant coating is coated on the B surface of the heat insulation sheet main body.
[0007] The edge flame-retardant coating is coated on the C, D, E and F surfaces of the heat insulation sheet main body.
[0008] The composition of the flame-retardant coating and the edge flame-retardant coating is the same.
[0009] The film layer is one of PET film and PI film.
[0010] The thickness of the film layer is 0.05mm-0.1mm.
[0011] The thickness of the flame-retardant coating is 0.02mm-0.05mm.
[0012] The thickness of the heat insulation sheet main body is 0.35mm-4.85mm.
[0013] The aerogel thermal insulation sheet has a thickness of 0.44mm-5mm.
[0014] The aerogel thermal insulation sheet has the advantages that:
[0015] 1、The aerogel thermal insulation sheet has the advantages that:
[0016] 2、The aerogel thermal insulation sheet has the advantages that: BRIEF DESCRIPTION OF DRAWINGS
[0017] Fig. 1 It is an explosion structure schematic view of the aerogel thermal insulation sheet.
[0018] Fig. 2 It is an explosion structure schematic view of the aerogel thermal insulation sheet.
[0019] Fig. 3 It is an explosion structure schematic view of the aerogel thermal insulation sheet.
[0020] In the figure, 100 is the thermal insulation sheet body, 200 is the film layer, 300 is the flame-retardant coating, and 400 is the edge flame-retardant coating. DETAILED DESCRIPTION
[0021] The aerogel thermal insulation sheet has the advantages that: Figs. 1-3 The aerogel thermal insulation sheet has the advantages that:
[0022] Wherein, the same parts are indicated by the same reference numerals. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a specific part, and the drawings are in a very simplified form and use non-precise ratios, only to facilitate, clearly assist in the purpose of explaining the embodiments of the present application.
[0023] For the sake of clarity, not all of the features of the actual implementations are described in this description, the description is incomplete without the detailed description of the well-known functions and configurations, because they will make the present application confused by unnecessary details, it should be considered that in the development of any actual implementation, a large number of implementation details must be made to achieve the specific goals of the developers, such as from one embodiment to another according to the relevant system or relevant business restrictions, in addition, it should be considered that such development work can be complex and time-consuming, but only for the skilled person in the art.
[0024] Embodiment 1: An aerogel thermal insulation sheet, comprising a three-layer structure, a thermal insulation sheet body 100, a film layer 200 and a flame-retardant coating 300, the film layer 200 is heat-sealed on the A surface of the thermal insulation sheet body 100, the film layer 200 is an insulating film, the heat-sealing temperature is 90 degrees, the pressure is 0.4 MPa, and the time is 3 seconds.
[0025] The flame-retardant coating 300 is coated on the B surface of the thermal insulation sheet body 100, and the edge flame-retardant coating 400 is coated on the C surface, the D surface, the E surface and the F surface of the thermal insulation sheet body 100, and the components of the flame-retardant coating 300 and the edge flame-retardant coating 400 are the same.
[0026] The thickness of the film layer 200 is 0.05 mm, the thickness of the flame-retardant coating 300 is 0.02 mm, the thickness of the thermal insulation sheet body 100 is 0.37 mm, and the thickness of the aerogel thermal insulation sheet is 0.44 mm.
[0027] Embodiment 2: An aerogel thermal insulation sheet, comprising a three-layer structure, a thermal insulation sheet body 100, a film layer 200 and a flame-retardant coating 300, the film layer 200 is heat-sealed on the A surface of the thermal insulation sheet body 100, the heat-sealing temperature is 90 degrees, the pressure is 0.4 MPa, and the time is 3 seconds.
[0028] The flame-retardant coating 300 is coated on the B surface of the thermal insulation sheet body 100, and the edge flame-retardant coating 400 is coated on the C surface, the D surface, the E surface and the F surface of the thermal insulation sheet body 100, and the components of the flame-retardant coating 300 and the edge flame-retardant coating 400 are the same.
[0029] The film layer 200 is a PET film, the thickness of the film layer 200 is 0.07 mm, the thickness of the flame-retardant coating 300 is 0.03 mm, the thickness of the thermal insulation sheet body 100 is 0.38 mm, and the thickness of the aerogel thermal insulation sheet is 0.48 mm.
[0030] Embodiment 3: An aerogel thermal insulation sheet, comprising a three-layer structure, a thermal insulation sheet body 100, a film layer 200 and a flame-retardant coating 300, the film layer 200 is heat-sealed on the A surface of the thermal insulation sheet body 100, the heat-sealing temperature is 90 degrees, the pressure is 0.4 MPa, and the time is 3 seconds.
[0031] The B face of the heat insulation sheet body 100 is coated with the flame-retardant coating 300, the C face, the D face, the E face and the F face of the heat insulation sheet body 100 are coated with the edge flame-retardant coating 400, and the flame-retardant coating 300 and the edge flame-retardant coating 400 are of the same composition.
[0032] The film layer 200 is a PET film, the thickness of the film layer 200 is 0.08mm, the thickness of the flame-retardant coating 300 is 0.04mm, the thickness of the heat insulation sheet body 100 is 0.38mm, and the thickness of the aerogel heat insulation sheet is 0.5mm.
[0033] The film layer 200 is a PET film, the thickness of the film layer 200 is 0.08mm, the thickness of the flame-retardant coating 300 is 0.04mm, the thickness of the heat insulation sheet body 100 is 0.38mm, and the thickness of the aerogel heat insulation sheet is 0.5mm.
[0034] The B face of the heat insulation sheet body 100 is coated with the flame-retardant coating 300, the C face, the D face, the E face and the F face of the heat insulation sheet body 100 are coated with the edge flame-retardant coating 400, and the flame-retardant coating 300 and the edge flame-retardant coating 400 are of the same composition.
[0035] The film layer 200 is a PET film, the thickness of the film layer 200 is 0.08mm, the thickness of the flame-retardant coating 300 is 0.04mm, the thickness of the heat insulation sheet body 100 is 0.38mm, and the thickness of the aerogel heat insulation sheet is 0.5mm.
[0036] The film layer 200 is a PET film, the thickness of the film layer 200 is 0.08mm, the thickness of the flame-retardant coating 300 is 0.04mm, the thickness of the heat insulation sheet body 100 is 0.38mm, and the thickness of the aerogel heat insulation sheet is 0.5mm.
[0037] The B face of the heat insulation sheet body 100 is coated with the flame-retardant coating 300, the C face, the D face, the E face and the F face of the heat insulation sheet body 100 are coated with the edge flame-retardant coating 400, and the flame-retardant coating 300 and the edge flame-retardant coating 400 are of the same composition.
[0038] The film layer 200 is a PI film, the thickness of the film layer 200 is 0.1mm, the thickness of the flame-retardant coating 300 is 0.05mm, the thickness of the heat insulation sheet body 100 is 4.85mm, and the thickness of the aerogel heat insulation sheet is 5mm.
[0039] Although the technical scheme of the utility model has been described and listed in detail, it should be understood that modifications or equivalent alternatives to the above embodiments can be made by those skilled in the art, which is obvious, and these modifications or improvements made on the basis of not deviating from the spirit of the utility model are within the scope of protection of the utility model.
Claims
1. An aerogel heat insulation sheet, characterized in that, The device comprises a three-layer structure: a heat insulation sheet body (100), a thin film layer (200), and a flame-retardant coating (300). The thin film layer (200) is disposed on one side of the heat insulation sheet body (100), and the flame-retardant coating (300) is disposed on the other side of the heat insulation sheet body (100). The thin film layer (200) is heat-sealed on surface A of the heat insulation sheet body (100). The thin film layer (200) is an insulating film. The flame-retardant coating (300) is coated on surface B of the heat insulation sheet body (100). Flame-retardant coatings (400) are coated on surfaces C, D, E, and F of the heat insulation sheet body (100). The thin film layer (200) is either a PET film or a PI film. The thickness of the heat insulation sheet body (100) is 0.35mm-4.85mm.
2. The aerogel insulation sheet according to claim 1, characterized in that, The flame-retardant coating (300) and the edge flame-retardant coating (400) have the same composition.
3. The aerogel insulation sheet according to claim 1, characterized in that, The thickness of the thin film layer (200) is 0.05mm-0.1mm.
4. The aerogel insulation sheet according to claim 1, characterized in that, The thickness of the flame-retardant coating (300) is 0.02mm-0.05mm.
5. The aerogel insulation sheet according to claim 1, characterized in that, The thickness of aerogel insulation sheets ranges from 0.44mm to 5mm.