Membrane assembly integrating graphene carbon heat-conducting sheet for vehicle headlight defogging and reversible desiccant membrane, and use thereof

Abstract

Disclosed in the present invention are a membrane assembly integrating a graphene carbon heat-conducting sheet for vehicle headlight defogging and a reversible desiccant membrane, and a use thereof. A graphene carbon heat-conducting sheet layer serves as a base layer, is arranged on the inner wall of a vehicle headlight housing, and comprises a heat-absorbing region and a heat-conducting region, wherein the heat-absorbing region is arranged to face a heating element in a vehicle headlight and is used for absorbing infrared heat, and the heat-conducting region extends from the heat-absorbing region to a fogging-prone cold region and conducts out the heat for defogging. A reversible desiccant membrane layer is arranged in the heat-conducting region, and absorbs heat energy and temperature transferred by the graphene carbon heat-conducting sheet layer to implement micro-moisture desorption and drying of the membrane. The membrane assembly is adhered to the inner wall of a flattened and elongated strip-type headlight housing of a split headlight, a full-width headlight or a lightsaber headlight by using a double-sided pressure-sensitive adhesive film. By applying the present invention, heat generated by an electrical element inside a vehicle headlight is used to implement a moisture absorption and desorption cycle of the reversible desiccant membrane, thereby effectively solving the problem of fogging of novel flattened and elongated strip-type vehicle headlights, and achieving the advantages of a simple structure, low costs and the like.

Description

Membrane modules combining graphene carbon thermal conductive sheets and reversible desiccant membranes for automotive headlight defogging and their applications. Technical Field

[0001] This invention relates to the field of automotive headlight defogging technology, and in particular to a membrane assembly combining a graphene carbon heat-conducting sheet and a reversible desiccant membrane for automotive headlight defogging, and its application. Background Technology

[0002] With the rapid mass production of new energy vehicles and the "new four modernizations" of automobiles, automakers are constantly launching avant-garde, stylish and technologically advanced models to meet consumer demand. Car lights are the eyes of a car and a reflection of its dynamic beauty. Therefore, car lights have also seen significant changes in appearance and structure. The main characteristics of the new car light design trends include the following types: flattening and narrow strip-shaped features.

[0003] Split headlights: This design separates the daytime running lights from the headlights. The daytime running lights are usually located in the position of the traditional headlights, while the headlights are located in the position of the fog lights or integrated with the frameless grille. The design of split headlights gives people a sense of avant-garde and fashion.

[0004] Full-width headlights: This design features long, strip-shaped headlights that span the entire front of the car, usually echoing the overall front styling and showcasing a unique style. Full-width headlights not only enhance the vehicle's visual width but also add a touch of modern technology.

[0005] Lightsaber-style headlights: mimicking the shape of a lightsaber, with LED internal light sources, and continuous daytime running lights combined with different light patterns to create a strong sense of technology that is unforgettable at first glance.

[0006] Split headlights, continuous headlights, and light-sword-style headlights—these new flat and narrow strip-shaped structural features cause condensation and fogging on the surface of the cold areas and the narrow strip-shaped inner cavity of the headlights due to temperature differences caused by the heating of the internal electrical components and the micro-circulation of air humidity created by the headlights' vents. Traditional headlight defogging methods often fail to solve this problem, seriously affecting the aesthetics of new car models and posing a potential safety hazard by causing yellowing of the headlights due to fogging. Summary of the Invention

[0007] The main technical problem solved by this invention is to provide a membrane assembly combining a graphene carbon heat-conducting sheet and a reversible desiccant membrane for defogging automotive headlights and its application, which can eliminate fogging phenomena in new flat and narrow strip-shaped headlights such as split headlights, through headlights, and lightsaber headlights under the cyclical use of headlights during operation and parking.

[0008] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: to provide a membrane assembly combining a graphene carbon thermal conductive sheet for automotive headlight defogging and a reversible desiccant membrane, comprising:

[0009] A graphene carbon thermal conductive sheet layer is set as a base layer on the inner wall of the vehicle headlight housing. It includes a heat absorption area and a heat conduction area. The heat absorption area is set towards the heat-generating element inside the headlight and is used to absorb infrared heat. The heat conduction area is formed by extending from the heat absorption area to the cold area that is prone to fogging and dissipating heat for defogging.

[0010] A reversible desiccant membrane layer is located in the heat-conducting area, absorbing the heat energy and temperature transferred by the graphene carbon heat-conducting sheet layer to achieve membrane micro-moisture desorption and drying.

[0011] The reversible desiccant membrane layer includes a supporting skeleton layer, a functional layer, and an active filler. The functional layer is composited on the surface of the supporting skeleton layer, and the active filler is embedded in the supporting skeleton layer. The reversible desiccant membrane layer mainly includes an expanded polytetrafluoroethylene (ePTFE) membrane with a microporous structure and a mist absorber slurry. The mist absorber slurry is coated onto the ePTFE membrane using a high-precision surface controllable coating composite technology. The ePTFE membrane serves as the supporting skeleton layer, and the mist absorber slurry forms a functional layer on the surface of the ePTFE membrane and is embedded in the microporous structure as an active filler.

[0012] In a preferred embodiment of the present invention, an ePTFE expanded polytetrafluoroethylene breathable membrane layer is encapsulated on the surface of the reversible desiccant membrane layer.

[0013] In a preferred embodiment of the present invention, the encapsulation includes a single-sided covered cover-type encapsulation, wherein one surface of the reversible desiccant film layer is connected to the graphene carbon thermal conductive sheet layer, and the remaining surface is compositely connected to the ePTFE expanded polytetrafluoroethylene breathable film layer.

[0014] In a preferred embodiment of the present invention, one side surface of the reversible desiccant film layer is connected to the graphene carbon thermal conductive sheet layer via a double-sided pressure-sensitive film.

[0015] In a preferred embodiment of the present invention, the encapsulation includes a wrap-around encapsulation, in which an ePTFE expanded polytetrafluoroethylene breathable membrane layer is wrapped over the entire surface of a reversible desiccant membrane layer, and the reversible desiccant membrane layer is connected to the graphene carbon thermal conductive sheet layer through the ePTFE expanded polytetrafluoroethylene breathable membrane layer.

[0016] In a preferred embodiment of the present invention, the ePTFE expanded polytetrafluoroethylene breathable membrane layer is connected to the graphene carbon thermal conductive sheet layer via a double-sided pressure-sensitive film.

[0017] In a preferred embodiment of the present invention, the thickness of the membrane module is 0~3000 μm.

[0018] To solve the above-mentioned technical problems, another technical solution adopted by the present invention is: to provide an application of a membrane assembly combining a graphene carbon heat-conducting sheet and a reversible desiccant film for automotive headlight defogging, characterized in that the membrane assembly is attached to the inner wall of the flattened and narrow strip-shaped headlight housing of split headlights, through-type headlights, and lightsaber-type headlights using double-sided pressure-sensitive adhesive sheets.

[0019] In a preferred embodiment of the present invention, the membrane assembly is also applied in the small space of a smart helmet display, a monitoring probe, an image detection device, or a lidar detection sensor.

[0020] In a preferred embodiment of the present invention, the membrane module is combined with a CMD condensation controller and applied within the headlight housing.

[0021] The beneficial effects of the present invention are as follows: the membrane module of the present invention can achieve a moisture absorption rate of more than 140% of its own weight under the conditions of 40℃ and 90%RH; under the state of saturation, it can desorb more than 130% in an environment of 35℃, and has long-term reversible moisture absorption and drying characteristics, and can be used in a cycle of adsorption and desorption; the operating temperature is -60℃ to 120℃, and it has excellent weather resistance and temperature resistance.

[0022] By applying this invention, the heat generated by the internal electrical components of the vehicle lamp is used to achieve a cycle of moisture absorption and desorption of the reversible desiccant film, effectively solving the fogging problem of new flat and narrow strip-shaped vehicle lamps. It has the advantages of simple structure, low cost and significant defogging effect. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0024] Figure 1 is a schematic diagram of a preferred embodiment of the membrane assembly combining a graphene carbon heat-conducting sheet and a reversible desiccant membrane for defogging automotive headlights according to the present invention.

[0025] Figure 2 is a schematic diagram of another preferred embodiment of the membrane assembly combining a graphene carbon heat-conducting sheet and a reversible desiccant membrane for defogging automotive headlights according to the present invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this invention, it should be noted that the terms "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use. These terms are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] In this invention, unless otherwise expressly specified and limited, "above or below" a first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] Please refer to Figure 1. Embodiment 1 of the present invention includes:

[0033] A membrane module combining a graphene carbon thermal conductive sheet and a reversible desiccant membrane for defogging automotive headlights includes:

[0034] A graphene carbon thermal conductive layer 1, serving as a base layer, is disposed on the inner wall of the headlight housing 2. It includes a heat-absorbing area and a heat-conducting area. The heat-absorbing area faces the heating element 3 inside the headlight and is used to absorb infrared heat. The heat-conducting area extends from the heat-absorbing area towards the colder area prone to fogging, dissipating heat for defogging. The graphene carbon thermal conductive layer used in this invention possesses excellent thermal conductivity, is thin and flexible, and its specific parameters are shown in the table below.

[0035]

[0036]

[0037] The reversible desiccant membrane layer 4 is located in the heat-conducting zone and absorbs the heat energy and temperature transferred by the graphene carbon heat-conducting sheet layer 1 to achieve membrane micro-moisture desorption and drying.

[0038] The working principle is as follows: the heat and temperature generated by electrical appliances such as car lights are transferred to the reversible desiccant membrane through the graphene carbon heat-conducting sheet, causing the reversible desiccant membrane that has absorbed moisture to desorb trace amounts of moisture. In this way, the reversible desiccant membrane is in a dry state and has the ability to absorb moisture again in a cycle.

[0039] The reversible desiccant film layer 4 includes a support framework layer, a functional layer and an active filler. The functional layer is composited on the surface of the support framework layer and the active filler is embedded in the support framework layer.

[0040] The reversible desiccant membrane mainly comprises an expanded polytetrafluoroethylene (ePTFE) membrane with a microporous structure and an adsorbent slurry. The adsorbent slurry is coated onto the ePTFE membrane using a high-precision surface-controlled coating composite technology. The ePTFE membrane serves as a supporting framework layer, while the adsorbent slurry forms a functional layer on the surface of the ePTFE membrane and acts as an active filler embedded in the microporous structure.

[0041] The reversible desiccant membrane of the present invention can achieve a moisture absorption rate of more than 140% of its own weight under conditions of 40°C and 90%RH; under saturated conditions, it can desorb more than 130% in an environment of 35°C, and has long-term reversible moisture absorption and drying characteristics, and can be used in a cycle of absorption and desorption; the operating temperature is -60°C to 120°C, and it has excellent weather resistance and temperature resistance.

[0042] An ePTFE expanded polytetrafluoroethylene breathable membrane layer 5 is encapsulated on the surface of the reversible desiccant membrane layer 4.

[0043] The micropore size of the ePTFE expanded polytetrafluoroethylene breathable membrane is 0.1-30μm, with hundreds of millions of irregularly shaped, staggered, three-dimensional micropores per square centimeter. The material has a large number of interconnected micropores from the surface to the interior, as shown in Figure 1, and has certain air permeability and moisture permeability.

[0044] The package is a single-sided covered cover type package, with one side surface of the reversible desiccant film layer 4 connected to the graphene carbon thermal conductive sheet layer 1, and the remaining surface connected to the ePTFE expanded polytetrafluoroethylene breathable film layer 5.

[0045] One side of the reversible desiccant film layer 4 is connected to the graphene carbon thermal conductive sheet layer 1 via a double-sided pressure-sensitive film 6.

[0046] The specific preparation method of the membrane module of the present invention includes the following steps:

[0047] (1) Prepare materials, including: reversible desiccant film, graphene carbon thermal conductive sheet, double-sided pressure-sensitive film and ePTFE expanded polytetrafluoroethylene film.

[0048] (2) The above materials are die-cut to produce reversible desiccant films, graphene carbon thermal conductive sheets and double-sided pressure-sensitive films of the required sizes.

[0049] (3) Use pressure-sensitive adhesive patches to bond the reversible desiccant film to the graphene carbon thermal conductive sheet;

[0050] (4) Use ePTFE expanded polytetrafluoroethylene membrane to cover the reversible desiccant membrane;

[0051] (5) Adhere a pressure-sensitive adhesive strip with release paper to the back of the graphene carbon thermal conductive sheet;

[0052] (6) Printing is performed on the surface of the ePTFE expanded polytetrafluoroethylene film encapsulation;

[0053] (7) Vacuum pack the packaged components;

[0054] (8) Inspect the packaged parts and store them in the warehouse after they pass the inspection.

[0055] Please refer to Figure 2. Embodiment 2 of the present invention includes:

[0056] A membrane module combining a graphene carbon thermal conductive sheet and a reversible desiccant membrane for defogging automotive headlights includes:

[0057] A graphene carbon thermal conductive layer 1, serving as a base layer, is disposed on the inner wall of the headlight housing 2. It includes a heat-absorbing area and a heat-conducting area. The heat-absorbing area faces the heating element 3 inside the headlight and is used to absorb infrared heat. The heat-conducting area extends from the heat-absorbing area towards the colder area prone to fogging, dissipating heat for defogging. The graphene carbon thermal conductive layer used in this invention possesses excellent thermal conductivity, is thin and flexible, and its specific parameters are shown in the table below.

[0058]

[0059]

[0060] The reversible desiccant membrane layer 4 is located in the heat-conducting zone and absorbs the heat energy and temperature transferred by the graphene carbon heat-conducting sheet layer 1 to achieve membrane micro-moisture desorption and drying.

[0061] The working principle is as follows: the heat and temperature generated by electrical appliances such as car lights are transferred to the reversible desiccant membrane through the graphene carbon heat-conducting sheet, causing the reversible desiccant membrane that has absorbed moisture to desorb trace amounts of moisture. In this way, the reversible desiccant membrane is in a dry state and has the ability to absorb moisture again in a cycle.

[0062] The reversible desiccant film layer 4 includes a support framework layer, a functional layer and an active filler. The functional layer is composited on the surface of the support framework layer and the active filler is embedded in the support framework layer.

[0063] The reversible desiccant membrane mainly comprises an expanded polytetrafluoroethylene (ePTFE) membrane with a microporous structure and an adsorbent slurry. The adsorbent slurry is coated onto the ePTFE membrane using a high-precision surface-controlled coating composite technology. The ePTFE membrane serves as a supporting framework layer, while the adsorbent slurry forms a functional layer on the surface of the ePTFE membrane and acts as an active filler embedded in the microporous structure.

[0064] The reversible desiccant membrane of the present invention can achieve a moisture absorption rate of more than 140% of its own weight under conditions of 40°C and 90%RH; under saturated conditions, it can desorb more than 130% in an environment of 35°C, and has long-term reversible moisture absorption and drying characteristics, and can be used in a cycle of absorption and desorption; the operating temperature is -60°C to 120°C, and it has excellent weather resistance and temperature resistance.

[0065] An ePTFE expanded polytetrafluoroethylene breathable membrane layer 5 is encapsulated on the surface of the reversible desiccant membrane layer 4.

[0066] The micropore size of the ePTFE expanded polytetrafluoroethylene breathable membrane is 0.1-30μm, with hundreds of millions of irregularly shaped, staggered, three-dimensional micropores per square centimeter. The material has a large number of interconnected micropores from the surface to the interior, as shown in Figure 1, and has certain air permeability and moisture permeability.

[0067] The encapsulation is a wrap-around encapsulation, in which the ePTFE expanded polytetrafluoroethylene breathable membrane layer 5 is wrapped around the entire surface of the reversible desiccant membrane layer 4, and the reversible desiccant membrane layer 4 is connected to the graphene carbon thermal conductive sheet layer 1 through the ePTFE expanded polytetrafluoroethylene breathable membrane layer 5.

[0068] The ePTFE expanded polytetrafluoroethylene breathable membrane layer 5 is connected to the graphene carbon thermal conductive sheet layer 1 via a double-sided pressure-sensitive film 6.

[0069] The specific preparation method of the membrane module of the present invention includes the following steps:

[0070] (1) Prepare materials, including: reversible desiccant film, graphene carbon thermal conductive sheet, double-sided pressure-sensitive film and ePTFE expanded polytetrafluoroethylene film.

[0071] (2) The above materials are die-cut to produce reversible desiccant films, graphene carbon thermal conductive sheets and double-sided pressure-sensitive films of the required sizes.

[0072] (4) Use ePTFE expanded polytetrafluoroethylene membrane to encapsulate the reversible desiccant membrane;

[0073] (3) Use pressure-sensitive adhesive patches to bond the ePTFE expanded polytetrafluoroethylene film to the graphene carbon thermal conductive sheet;

[0074] (5) Adhere a pressure-sensitive adhesive strip with release paper to the back of the graphene carbon thermal conductive sheet;

[0075] (6) Printing is performed on the surface of the ePTFE expanded polytetrafluoroethylene film encapsulation;

[0076] (7) Vacuum pack the packaged components;

[0077] (8) Inspect the packaged parts and store them in the warehouse after they pass the inspection.

[0078] The thickness of the membrane modules in Examples 1-2 is 0~3000 μm.

[0079] An application of a membrane module combining a graphene carbon heat-conducting sheet and a reversible desiccant membrane for defogging automotive headlights is described, wherein the membrane module is adhered to the inner wall of the flat and narrow strip-shaped headlight housing of split headlights, through-type headlights, and lightsaber-type headlights using double-sided pressure-sensitive adhesive film 6.

[0080] The reversible desiccant membrane absorbs trace moisture from the air in the cold zone, reducing humidity within the novel flat and elongated ribbon-shaped housing and thus eliminating fogging. As the headlights operate, the heat and temperature absorbed by the graphene carbon heat-conducting sheet are rapidly transferred to the reversible desiccant membrane. Under the influence of this heat and temperature, the reversible desiccant membrane begins to desorb the absorbed moisture. This desorbed moisture is carried away by the micro-circulation airflow within the headlights. This process reduces humidity within the new flat and elongated ribbon-shaped housing, eliminating fogging, while simultaneously restoring the reversible desiccant membrane's ability to continue drying and absorbing moisture. This allows for the elimination of fogging in flat and elongated ribbon-shaped headlights, such as split headlights, continuous headlights, and lightsaber-style headlights, through cyclical use during operation and when the headlights are parked.

[0081] This membrane module is also used in the tiny spaces of smart helmet displays, monitoring probes, image detection, and lidar detection sensors to eliminate fogging in these spaces, allowing their electrical performance to be effectively utilized and enabling more reliable operation.

[0082] When membrane modules are combined with CMD condensation controllers and applied inside automotive headlight housings, they can achieve better defogging results.

[0083] This invention relates to a membrane assembly for automotive headlight defogging, combining a graphene carbon heat-conducting sheet and a reversible desiccant film. This assembly boasts an extremely thin thickness, enabling it to fit within the confined spaces of novel flat and elongated strip-shaped headlights such as split headlights, continuous headlights, and lightsaber-style headlights. This ultra-thin design significantly shortens the design verification and development cycle of new energy vehicle headlights, allowing for rapid market launch and meeting consumer demand for stylish and avant-garde designs.

[0084] The membrane module of this invention is inexpensive and can be used in conjunction with a vehicle headlight venting membrane module and a CMD condensation controller to further enhance the defogging effect. This combined application not only reduces the overall cost of the vehicle headlight system but also significantly improves defogging performance, ensuring that the headlights maintain good light transmittance and clarity under various environmental conditions.

[0085] The membrane module of this invention effectively reduces the humidity inside the vehicle headlight, eliminating fogging and ensuring stable headlight performance. Simultaneously, its ultra-thin and transparent characteristics do not affect the headlight's appearance design; on the contrary, they enhance its aesthetics, increase product appeal, and satisfy consumers' pursuit of a smart and technological feel.

[0086] The membrane module of this invention does not require changes to the internal structure and layout of already designed and mass-produced new energy vehicle headlights, and can be directly applied to existing headlight systems. This design significantly shortens the development and installation cycle of new headlights, saving customers and consumers considerable time and costs, while simplifying engineering application processes and improving application efficiency.

[0087] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A membrane assembly combining a graphene carbon thermal conductive sheet and a reversible desiccant membrane for defogging automotive headlights, characterized in that, include: A graphene carbon thermal conductive sheet layer is set as a base layer on the inner wall of the vehicle headlight housing. It includes a heat absorption area and a heat conduction area. The heat absorption area is set towards the heat-generating element inside the headlight and is used to absorb infrared heat. The heat conduction area is formed by extending from the heat absorption area to the cold area that is prone to fogging and dissipating heat for defogging. A reversible desiccant membrane layer is located in the heat-conducting area, absorbing the heat energy and temperature transferred by the graphene carbon heat-conducting sheet layer to achieve membrane micro-moisture desorption and drying. The reversible desiccant film layer includes a support framework layer, a functional layer and an active filler. The functional layer is composited on the surface of the support framework layer and the active filler is embedded in the support framework layer. The reversible desiccant film layer mainly consists of an expanded polytetrafluoroethylene (ePTFE) membrane with a microporous structure and a mist absorber slurry. The mist absorber slurry is coated onto the ePTFE membrane using a high-precision surface controllable coating composite technology. The ePTFE membrane serves as a supporting skeleton layer, while the mist absorber slurry forms a functional layer on the surface of the ePTFE membrane and is embedded in the microporous structure as an active filler.

2. The membrane assembly of the graphene carbon thermal conductive sheet and reversible desiccant membrane for automotive headlight defogging according to claim 1, characterized in that, An ePTFE expanded polytetrafluoroethylene breathable membrane layer is encapsulated on the surface of the reversible desiccant membrane layer.

3. The membrane assembly of the graphene carbon thermal conductive sheet and reversible desiccant membrane for automotive headlight defogging according to claim 2, characterized in that, The encapsulation includes a single-sided covered cover-type encapsulation, with one surface of the reversible desiccant film layer connected to the graphene carbon thermal conductive sheet layer, and the remaining surface connected to the ePTFE expanded polytetrafluoroethylene breathable film layer.

4. The membrane assembly of the graphene carbon thermal conductive sheet and reversible desiccant membrane for automotive headlight defogging according to claim 3, characterized in that, One side of the reversible desiccant film layer is connected to the graphene carbon thermal conductive sheet layer via a double-sided pressure-sensitive film.

5. The membrane assembly of the graphene carbon thermal conductive sheet and reversible desiccant membrane for automotive headlight defogging according to claim 2, characterized in that, The encapsulation includes a wrap-around encapsulation, in which an ePTFE expanded polytetrafluoroethylene breathable membrane layer is wrapped over the entire surface of a reversible desiccant membrane layer, and the reversible desiccant membrane layer is connected to the graphene carbon thermal conductive sheet layer through the ePTFE expanded polytetrafluoroethylene breathable membrane layer.

6. The membrane assembly of the graphene carbon thermal conductive sheet and reversible desiccant membrane for automotive headlight defogging according to claim 5, characterized in that, The ePTFE expanded polytetrafluoroethylene breathable membrane layer is connected to the graphene carbon thermal conductive sheet layer through double-sided pressure-sensitive film.

7. The membrane assembly of the graphene carbon thermal conductive sheet and reversible desiccant membrane for automotive headlight defogging according to claim 1, characterized in that, The thickness of the membrane module is 0~3000 μm.

8. The application of a membrane module combining a graphene carbon thermal conductive sheet and a reversible desiccant membrane for defogging automotive headlights, characterized in that, The membrane assembly described in any one of claims 1-7 is adhered to the inner wall of the flattened and narrow strip-shaped headlight housing of the split headlight, through-type headlight, and lightsaber-type headlight using double-sided pressure-sensitive adhesive film.

9. The application of the membrane module combining the graphene carbon thermal conductive sheet for automotive headlight defogging and the reversible desiccant membrane according to claim 8, characterized in that, This membrane module is also used in the tiny spaces of smart helmet displays, monitoring probes, image detection, and lidar detection sensors.

10. The application of the membrane module combining the graphene carbon thermal conductive sheet for automotive headlight defogging and the reversible desiccant membrane according to claim 8, characterized in that, This membrane module, combined with a CMD condensation controller, is used within the headlight housing.

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