Active electrolytic water molecule unidirectional elimination of fogging with desiccant for vehicle lamp rear cover assembly

Abstract

The application discloses a car lamp rear cover assembly with active electrolytic water molecules for unidirectional elimination of fogging, which comprises a cover body provided with at least one rapid moisture removal channel and a continuous drying area; the air flow channel of the rapid moisture removal channel is provided with an active electrolytic water molecule device for unidirectional reduction of humidity in a limited space by discharging oxygen outside the car lamp; and the continuous drying area is an inner concave cavity with an opening facing the inner side of the car lamp, and the cavity is provided with a drying material with continuous drying capacity. Through the above-mentioned mode, the active electrolytic water molecule device can electrolyze water molecules in the car lamp, thereby reducing the humidity in the car lamp for a long time, maintaining the humidity at a very low level, keeping the air in the car lamp in a dry state, and ensuring that no fogging occurs on the mirror surface or smooth surface in the car lamp; the drying material can continuously absorb moisture to keep the air in the car lamp in a dry state, thereby ensuring that no fogging occurs in the car lamp when the car is started after zero-kilometer off-line or a long period of parking.

Description

Technical Field

[0001] This invention relates to the field of automotive lamp rear covers, and in particular to an automotive lamp rear cover assembly with a desiccant that uses active electrolysis of water molecules to unidirectionally eliminate fogging. Background Technology

[0002] When we talk about car safety, the first things that come to mind are brakes and tires. But what if we told you that nearly 60% of traffic accidents occur at night, and that over 37 out of every 100 nighttime accidents are related to vehicle headlights, with half of those being fatal? Fogging and condensation on the lens of car headlights significantly impacts both illumination and safety. Fogging and condensation cause light scattering and reduced brightness, resulting in rapidly yellowing headlights and significantly reduced visibility. This impairs the driver's vision, making it difficult to avoid dangerous road conditions at high speeds and increasing the risk of accidents, especially at night or in adverse weather conditions. Poor lighting is a major factor in serious traffic accidents, and lighting safety is an extremely important component of vehicle safety. Because car headlights are a crucial part of vehicle safety, they significantly improve the safety of nighttime driving.

[0003] Currently, in order to solve the problem of fogging and condensation in vehicle lights, various sectors in China usually use desiccants or heated fans to dehumidify and reduce the internal moisture content. However, desiccants have low moisture absorption rates, are not waterproof, and have short lifespans, requiring periodic drying before use. If they come into contact with water, they need to be replaced with new desiccants. Heated fans consume high current, require waterproofing, and generate some noise, making them difficult to meet the requirements of engineering applications.

[0004] Another option is to use the principle of water electrolysis for electrolysis. However, the electrolysis components can cause excessively high oxygen concentrations inside smart helmet displays, vehicle lights, monitoring probes, image detection, lidar detection sensors, and marine electrical cabinets. The oxygen atoms or molecules released during electrolysis can cause poor contact and corrosion of internal electrical components and circuits (internal chips, integrated circuits, circuits, PI insulation layers, etc.) in an oxygen-rich environment. Continuous electrolysis can lead to excessively high internal oxygen concentrations, posing a risk of spontaneous combustion. Hydrogen accumulation on the cathode side can also pose a risk of hydrogen explosion. Frequent electrical failures also make it difficult to meet users' requirements for reliable operation. Summary of the Invention

[0005] The main technical problem solved by this invention is to provide a car headlight rear cover assembly with a desiccant that uses active electrolysis of water molecules to unidirectionally eliminate fogging. When powered on, it can continuously electrolyze water molecules in the air inside the headlight, thereby accelerating the reduction of humidity inside the headlight and ensuring that no fogging occurs when the car is driven off the production line at zero kilometers or after a long period of parking.

[0006] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: to provide a vehicle headlight rear cover assembly with active electrolysis of water molecules with desiccant to eliminate fogging in one direction, characterized in that it includes: a cover body disposed on the air convection path inside and outside the headlight, and the cover body is provided with at least one fast dehumidification channel and a continuous drying area; The rapid dehumidification channel is equipped with an active water molecule electrolysis device that discharges oxygen to the outside of the headlights and reduces the humidity in the confined space. The continuous drying zone is a concave cavity with an opening facing the inside of the headlights, and the cavity is equipped with a desiccant with continuous drying capabilities.

[0007] In a preferred embodiment of the present invention, the connection method between the cover and the plastic housing of the automotive headlight includes snap-fit ​​connection, threaded connection or flange port connection.

[0008] In a preferred embodiment of the present invention, the active water molecule electrolysis device and the rapid dehumidification channel are connected by means of threaded connection, interference fit, adhesive or snap fastener.

[0009] In a preferred embodiment of the present invention, a perforated cover plate is provided at the opening of the concave cavity facing the inside of the headlight, and the perforated cover plate is fixedly connected to the cover body by welding, bonding or screws.

[0010] In a preferred embodiment of the present invention, the desiccant is a continuous drying package filled with a desiccant, which is a common desiccant or a mixture of reversible hygroscopic particulate matter and micro-particles of a substance that efficiently absorbs far-infrared radiation energy.

[0011] In a preferred embodiment of the present invention, the common desiccant is magnesium chloride desiccant, silica gel material desiccant, calcium chloride desiccant, mineral desiccant, montmorillonite powder desiccant, quicklime powder desiccant, biochemical desiccant, carbon molecular sieve desiccant, chemical fiber desiccant, column desiccant, or shipping container drying strip.

[0012] In a preferred embodiment of the present invention, a substance that is highly sensitive to absorbing far-infrared radiation energy provides energy for the drying of hygroscopic reversible hygroscopic particulate matter to remove trace moisture, thereby restoring the continuous hygroscopic drying capacity of the mixture of the reversible hygroscopic particulate matter and the micro-particles of the substance that are highly sensitive to absorbing far-infrared radiation energy. The hygroscopic particulate matter is one or more of the following: reversible desiccant, bentonite, silica aerogel, carbon molecular sieve, carbon aerogel adsorbent, and water-absorbing resin. The micro-particles of the substance that are highly sensitive to absorbing far-infrared radiation energy include one or more of the following: carbon products, biochar, tourmaline, far-infrared ceramics, zirconium carbide, metal oxides, and silicon carbide.

[0013] In a preferred embodiment of the present invention, the active water molecule electrolysis device includes a membrane electrode assembly. The membrane electrode assembly divides the airflow channel into an anode electrolysis chamber, a cathode cavity, and an oxygen exhaust channel. The anode electrolysis chamber is disposed facing the inside of the vehicle headlight and has a continuously unidirectional moisture-permeable coating membrane disposed at its port. The cathode cavity is disposed facing the outside of the vehicle headlight and has an ePTFE microporous breathable protective membrane disposed at its port. The oxygen exhaust channel is a channel for connecting the anode electrolysis chamber with the external atmosphere of the vehicle headlight.

[0014] In a preferred embodiment of the present invention, the membrane electrode assembly includes an anode porous foil, an anode catalyst layer, a proton exchange membrane, a cathode catalyst layer, and a conductive carbon paper diffusion layer arranged sequentially along the airflow direction. The anode porous foil is connected to a DC anode conductor, and the DC cathode conductor is connected to the conductive carbon paper diffusion layer. The DC anode conductor, the membrane electrode assembly, and the DC cathode conductor are connected to form a conductive electrolysis reaction circuit for water molecules.

[0015] In a preferred embodiment of the present invention, the cathode catalyst layer is a cathode platinum-carbon Pt / C catalyst layer, the proton exchange membrane is a perfluorosulfonic acid proton exchange membrane or a perfluorosulfonic acid proton exchange membrane reinforced with an ePTFE microporous membrane, the anode catalyst layer is an anode platinum-carbon Pt / C catalyst layer, and the anode porous foil is an anode platinum-titanium Pt / Ti porous foil.

[0016] The beneficial effects of this invention are as follows: When powered on, this invention electrolyzes water molecules inside the car headlight through an active water molecule electrolysis device, and this functional module works continuously, which can continuously reduce the humidity inside the car headlight, maintaining the humidity at a very low level. The air inside the headlight is in a dry state, ensuring that no fogging occurs on the mirror or smooth surface inside the headlight. This invention also has a built-in desiccant, which can continuously absorb moisture to keep the air inside the headlight in a dry state, ensuring that no fogging occurs when the car is driven off the production line at zero kilometers or after a long period of parking. This ensures that the headlight illumination effect is far and bright, the built-in camera sensor radar is clear, there are no electrical short circuits, and the internal components are free from corrosion, thus ensuring that the headlight performance is effective. Attached Figure Description

[0017] 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: Figure 1 This is a schematic diagram of a preferred embodiment of the vehicle headlight rear cover assembly with desiccant for unidirectional fogging elimination by active electrolysis of water molecules. Headlight rear cover assembly with desiccant for unidirectional defogging via active electrolysis of water molecules Figure 2 yes Figure 1 The image shows a right view of a headlight rear cover assembly with desiccant that uses active electrolysis of water molecules to unidirectionally eliminate fogging. Figure 3 yes Figure 1 The diagram shows a schematic of the active water molecule electrolysis device in the rear cover assembly of a car headlight that uses an active water molecule electrolysis device to unidirectionally eliminate fogging. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] The embodiments of the present invention include: A type of automotive headlight rear cover assembly with desiccant that uses active electrolysis of water molecules to unidirectionally eliminate fogging, such as... Figure 1-2 As shown, it includes: a cover 1 disposed on the air convection path inside and outside the vehicle light, wherein the cover 1 is connected to the plastic housing of the vehicle light 2 by means of snap-fit, threaded connection or flange port connection, and an O-ring 21 is provided at the connection.

[0025] The cover 1 has at least one rapid dehumidification channel 12 and a continuous drying zone 13.

[0026] The rapid dehumidification channel 12 is equipped with an active water molecule electrolysis device 3 that discharges oxygen to the outside of the headlight 2 and reduces the humidity in the confined space.

[0027] The active electrolysis water molecule device 3 and the rapid dehumidification channel 12 are connected by threaded connection, interference fit, adhesive or snap fastener.

[0028] like Figure 3 As shown, the active water electrolysis device 3 includes a membrane electrode assembly 31, which divides the airflow channel into an anode electrolysis chamber 32, a cathode cavity 33, and an oxygen exhaust channel (not shown). The anode electrolysis chamber 32 is positioned towards the inside of the headlight 2 and has a continuously unidirectionally permeable coating membrane 35 at its port. The cathode cavity 33 is positioned towards the outside of the headlight 2 and has an ePTFE microporous breathable protective membrane 36 at its port.

[0029] The continuously unidirectionally permeable coating film is made by rolling a polyurethane emulsion coating agent containing hydrophilic groups onto one side surface of an expanded polytetrafluoroethylene (ePTFE) film, drying the coating at 80°C~100°C, and storing it at room temperature for 24 hours. The coating then cures on the surface of the ePTFE film, forming a dense and durable coating (see patent CN103862728B for details).

[0030] An external PET protective layer 361 with perforations is also bonded to the outside of the ePTFE microporous breathable protective membrane 36. The ePTFE microporous breathable protective membrane 36 forms a filter and breathable protective layer on the one hand, allowing the hydrogen gas produced by cathode electrolysis and the water molecules synthesized by the catalyst and oxygen in the atmosphere to be discharged; on the other hand, it prevents rainwater, dust and oil stains from entering the cathode cavity, protecting the cathode and catalyst layer from the risk of external environmental pollution, thus extending the life of this electrolysis device and effectively exerting the efficiency of electrolytic dehumidification.

[0031] The oxygen exhaust channel 34 is a channel used to connect the anode electrolysis chamber with the external atmosphere of the vehicle headlight 2. Oxygen generated during the active electrolysis of water molecules is discharged to the atmosphere through the oxygen exhaust channel.

[0032] like Figure 3 As shown, the membrane electrode assembly 31 includes an anode porous foil 311, an anode catalyst layer 312, a proton exchange membrane 313, a cathode catalyst layer 314, and a conductive carbon paper diffusion layer 315 arranged sequentially along the airflow direction. The anode porous foil 311 is connected to a DC anode conductor 37, and the DC cathode conductor 38 is connected to the conductive carbon paper diffusion layer 315. The DC anode conductor 37, the membrane electrode assembly 31, and the DC cathode conductor 38 are connected to form a conductive electrolysis reaction circuit for water molecules.

[0033] The active water molecule electrolysis device 3 also includes several elastic sealing rings 39 and insulating seals 40 arranged around the water molecule electrolysis reaction circuit to prevent humidity in the external atmosphere from seeping into the interior of the smart helmet display, vehicle lights, monitoring probes, image detection, lidar detection sensors, etc.

[0034] The cathode catalyst layer 314 is preferably a cathode platinum-carbon Pt / C catalyst layer, the proton exchange membrane 313 is preferably a perfluorosulfonic acid proton exchange membrane or a perfluorosulfonic acid proton exchange membrane reinforced with an ePTFE microporous membrane, the anode catalyst layer 312 is preferably an anode platinum-carbon Pt / C catalyst layer, and the anode porous foil 311 is preferably an anode platinum-titanium Pt / Ti porous foil. The conductive carbon paper diffusion layer 315 is a conductor in the electrolysis circuit. This conductor has micropores that diffuse out from the micropores of the conductive carbon paper, releasing hydrogen gas electrolyzed from the cathode and water molecules synthesized from oxygen in the atmosphere under the action of the catalyst.

[0035] The preferred anode platinum-titanium (Pt / Ti) porous foil mesh is to enhance the catalytic electrolysis efficiency of water molecules at the anode and increase the area of ​​water molecules colliding with the anode, thus increasing the chances of water molecules being electrolyzed.

[0036] Water molecules in the anolyte chamber move randomly at high speed. Some collide with the platinum-carbon (Pt / C) catalyst on the anode side and the platinum-titanium (Pt / Ti) porous foil mesh on the anode side, resulting in an electrolytic reaction. The electrolytic decomposition reaction equation of water molecules under the action of the platinum-carbon catalyst on the anode side is: 2H₂O → O₂ + 4H₂O + +4e - Electrolysis releases oxygen atoms or molecules, hydrogen protons, and electrons.

[0037] Oxygen atoms or molecules are continuously released into the external atmosphere through oxygen expulsion channels. H₂ is produced by electrolysis under the action of a platinum-carbon catalyst on the anode side. + Under the influence of DC voltage, the perfluorosulfonic acid proton exchange membrane or a perfluorosulfonic acid proton exchange membrane reinforced with ePTFE microporous membrane flows to the cathode side. In the cathode catalyst layer (a platinum-carbon Pt / C catalyst), the following reaction occurs to generate hydrogen or water molecules: 4H₂O + +4e - —2H2, O2 + 4H + +4e - —2H2O;H + Under the action of the platinum-carbon catalyst on the cathode side, the following reaction occurs, generating hydrogen or water molecules which are released into the external atmosphere through convection with the outside air via the ePTFE microporous protective membrane. This results in an extremely low hydrogen concentration on the cathode side, maintaining a safe state and eliminating the dangers caused by hydrogen accumulation in the cathode chamber.

[0038] The innovative structure of the active water molecule electrolysis device uses a proton exchange membrane as a solid electrolyte, which has good chemical stability, proton conductivity, and gas separation properties, effectively preventing electron transfer. Oxygen atoms electrolyzed at the anode are discharged to the external atmosphere through a dedicated oxygen venting channel, eliminating the hazards of electrolyzed oxygen atoms and oxygen gas in the anode chamber. Hydrogen atoms electrolyzed at the cathode, along with the synthesized water molecules and hydrogen gas, diffuse through an ePTFE microporous breathable protective membrane with the external air via convection, eliminating the explosive hazards and dangers of hydrogen gas accumulation in the cathode chamber. This innovative structure improves the safety of the electrolysis device and its engineering applications.

[0039] The continuously unidirectionally permeable coating membrane 35 has the function of being permeable to moisture but not airtight. The function of this membrane is to separate the anode electrolysis chamber into a chamber connected to the external atmosphere. Water molecules in this separated anode chamber, under the action of the platinum-carbon catalyst on the anode side, electrolyze and release oxygen atoms or molecules, hydrogen protons, and electrons. The released oxygen atoms or molecules are continuously released into the external atmosphere through the oxygen exhaust channel. Under the action of electrolysis, this separated anode chamber presents a low-humidity, slightly positive-pressure dry environment. Water molecules in the humid, hot air inside the car headlights migrate, permeate, diffuse, and desorb into this anode chamber through the unidirectionally permeable coating membrane and are electrolyzed. (Permeability is essentially a process of "adsorption-diffusion-transfer-desorption." The hydrophilic groups are called "chemical step stones." Under pressure difference, trace amounts of water are directionally transferred from the side with higher concentration to the side with lower humidity. This process is the unidirectional permeability process.)

[0040] The continuously unidirectionally permeable coating film 35 has the function of being permeable to moisture but not air, which prevents the electrical components and circuits inside from being corroded by oxygen-rich atoms. The internal oxygen concentration level is maintained at the same level as the atmospheric concentration, avoiding the risk of spontaneous combustion caused by excessive internal oxygen concentration. Under the action of the electrolysis device, the moisture content in the internal air is continuously reduced, and the humidity value continues to decrease, keeping the inside in a dry state. Even if the dew point of the external environment is very low, there is no fogging or condensation on the smooth mirror surface of the car headlight. This is an important new and significant innovation of the device. This protects the chips, integrated circuits and other electronic components, circuits, PI insulation layers and other components inside the headlight from corrosion in the oxygen-rich environment, making their electrical performance more reliable, with a lower failure rate and a longer lifespan.

[0041] The continuous drying zone 13 is a concave cavity 4 with an opening facing the inside of the headlight 2, and a desiccant 41 with continuous drying capability is provided inside the cavity.

[0042] The concave cavity 4 has a perforated cover plate 42 at the opening facing the inside of the headlight 2. The perforated cover plate 42 is fixedly connected to the cover by welding, bonding or screws.

[0043] The desiccant 41 is a continuous desiccant pack filled with a large amount of desiccant, which can rapidly absorb moisture to reduce its internal humidity and maintain its internal air dryness without fogging. The desiccant is a common desiccant or a mixture of reversible hygroscopic particulate matter and micro-particles that efficiently absorb far-infrared radiation energy (see patent CN108579351B for details).

[0044] Common desiccants include magnesium chloride desiccant, silica gel desiccant, calcium chloride desiccant, mineral desiccant, montmorillonite powder desiccant, quicklime powder desiccant, biochemical desiccant, carbon molecular sieve desiccant, chemical fiber desiccant, column desiccant, or shipping container drying strips.

[0045] The highly efficient far-infrared radiation energy-sensitive substance provides energy for the drying of reversible hygroscopic particulate matter, removing trace moisture and restoring the continuous hygroscopic drying capacity of the mixture of reversible hygroscopic particulate matter and highly efficient far-infrared radiation energy-sensitive powder particles. The hygroscopic particulate matter is one or more of the following: reversible desiccant, bentonite, silica aerogel, carbon molecular sieve, carbon aerogel adsorbent, and water-absorbing resin. The highly efficient far-infrared radiation energy-sensitive powder particles include one or more of the following: carbon products, biochar, tourmaline, far-infrared ceramics, zirconium carbide, metal oxides, and silicon carbide.

[0046] The built-in continuous drying pack of this invention can quickly and rapidly absorb moisture to keep the air inside the headlights dry, ensuring that the headlights do not fog up even after the car has been driven off the production line at zero kilometers or after a long period of parking. This ensures that the headlights perform effectively (long and bright illumination, clear radar from the built-in camera sensor, no electrical short circuits, and no corrosion of internal components, etc.).

[0047] The working principle of this invention: The headlight rear cover assembly with desiccant and active electrolytic water molecule unidirectional defogging is connected to the car headlight. After the cathode and anode conductor terminals of the active electrolytic water molecule device are connected to the power supply and started, the active electrolytic water molecule device continuously electrolyzes water molecules in the air inside the headlight (migrating and diffusing to the anode chamber), causing the humidity inside the headlight to decrease rapidly. At the same time, after the headlight is working, the internal electrical components heat up, causing the internal air pressure to increase. The humid and hot air inside the headlight is quickly absorbed by the continuous drying pack, or by a mixture of hygroscopic particulate matter and highly efficient far-infrared radiation energy absorbing microparticles in the device pack. The material also releases trace amounts of moisture into the headlight, which is further dried by absorbing the energy of thermal infrared radiation. This allows the mixture of reversible hygroscopic particles to continue to absorb moisture and dry even after the headlight stops working. This results in the air humidity (dryness) inside the headlight being much lower than the dew point temperature of the external environment, thus preventing fogging on the mirror or smooth surface inside the headlight and allowing the headlight to perform effectively. The headlight rear cover assembly of this invention, which uses active electrolytic water molecules to unidirectionally eliminate fogging, has a built-in desiccant, ensuring that no fogging occurs even after the car has reached zero kilometers or after a long period of parking.

[0048] When the headlights stop working, the temperature of the internal electrical components and the internal air temperature drop, leading to an equilibrium of internal and external pressure. The ordinary continuous drying pack or the mixture of reversible moisture-absorbing particles inside the pack of the present invention continues to absorb moisture and dry the internal air after the headlights stop working, so that the humidity of the air inside the headlights remains very low. If the headlights stop working, a backup power supply can be activated to provide power support to the source electrolysis water molecule device of the present invention, ensuring that the headlights always perform effectively.

[0049] In summary, this invention can maintain a low oxygen concentration level inside the vehicle headlight, preventing corrosion damage to the internal electrical components and circuits caused by oxygen-rich atoms and avoiding the risk of spontaneous combustion due to excessive internal oxygen concentration. The moisture content in the air inside the headlight is also continuously reduced by the electrolysis device, resulting in a consistently low humidity level and keeping the interior dry. Even in environments with low dew points, the smooth glass surface of the headlight lens remains free of fogging and condensation, ensuring the headlight's illumination is long and bright, the built-in camera sensor radar is clear, there are no electrical short circuits, and internal components are free from corrosion.

[0050] 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 vehicle headlight rear cover assembly with desiccant for unidirectional defogging via active electrolysis of water molecules, characterized in that, include: A cover located on the air convection path inside and outside the headlights, with at least one rapid dehumidification channel and a continuous drying zone on the cover; The rapid dehumidification channel is equipped with an active water molecule electrolysis device that discharges oxygen to the outside of the headlights and reduces the humidity in the confined space. The continuous drying zone is a concave cavity with an opening facing the inside of the headlights, and the cavity is equipped with a desiccant with continuous drying capabilities.

2. The vehicle headlight rear cover assembly with desiccant for unidirectional defogging via active electrolysis of water molecules, as described in claim 1, is characterized in that... The connection between the cover and the plastic housing of the automotive headlights can be achieved through snap-fit, threaded connection, or flange port connection.

3. The vehicle headlight rear cover assembly with desiccant for unidirectional defogging by active electrolysis of water molecules as described in claim 1, characterized in that, The active water electrolysis molecule device and the rapid dehumidification channel are connected by threaded connection, interference fit, adhesive or snap fastener.

4. The vehicle headlight rear cover assembly with desiccant for unidirectional defogging via active electrolysis of water molecules, as described in claim 1, is characterized in that... The concave cavity has a perforated cover plate at the opening facing the inside of the headlight. The perforated cover plate is fixedly connected to the cover body by welding, bonding or screws.

5. The vehicle headlight rear cover assembly with desiccant for unidirectional defogging via active electrolysis of water molecules, as described in claim 1, is characterized in that... The desiccant is a continuous drying package filled with a desiccant, which is a common desiccant or a mixture of reversible hygroscopic particulate matter and micro-particles that efficiently absorb far-infrared radiation energy.

6. The vehicle headlight rear cover assembly with desiccant for unidirectional defogging via active electrolysis of water molecules, as described in claim 5, is characterized in that... Common desiccants include magnesium chloride desiccant, silica gel desiccant, calcium chloride desiccant, mineral desiccant, montmorillonite powder desiccant, quicklime powder desiccant, biochemical desiccant, carbon molecular sieve desiccant, chemical fiber desiccant, column desiccant, or shipping container drying strips.

7. The vehicle headlight rear cover assembly with desiccant for unidirectional defogging via active electrolysis of water molecules, as described in claim 5, is characterized in that... The highly efficient far-infrared radiation energy-sensitive substance provides energy for the drying of the reversible hygroscopic particulate matter, removing trace moisture and restoring the continuous hygroscopic drying capacity of the mixture of the reversible hygroscopic particulate matter and the micro-particles of the substance that efficiently absorbs far-infrared radiation energy. The hygroscopic particulate matter is one or more of the following: reversible desiccant, bentonite, silica aerogel, carbon molecular sieve, carbon aerogel adsorbent, and water-absorbing resin. Highly efficient far-infrared radiation energy-sensitive microparticles include: carbon products, biochar, tourmaline, far-infrared ceramics, zirconium carbide, metal oxides, and silicon carbide, among one or more of these.

8. The vehicle headlight rear cover assembly with desiccant for unidirectional defogging by active electrolysis of water molecules as described in claim 1, characterized in that, The active water molecule electrolysis device includes a membrane electrode assembly. The membrane electrode assembly divides the airflow channel into an anode electrolysis chamber, a cathode cavity, and an oxygen exhaust channel. The anode electrolysis chamber is positioned facing the inside of the headlight and has a continuously unidirectional moisture-permeable coating membrane at its port. The cathode cavity is positioned facing the outside of the headlight and has an ePTFE microporous breathable protective membrane at its port. The oxygen exhaust channel is a channel for connecting the anode electrolysis chamber with the external atmosphere of the headlight.

9. The vehicle headlight rear cover assembly with desiccant for unidirectional defogging via active electrolysis of water molecules, as described in claim 8, is characterized in that... The membrane electrode assembly includes an anode porous foil, an anode catalyst layer, a proton exchange membrane, a cathode catalyst layer, and a conductive carbon paper diffusion layer arranged sequentially along the airflow direction. The anode porous foil is connected to a DC anode conductor, and the DC cathode conductor is connected to the conductive carbon paper diffusion layer. The DC anode conductor, the membrane electrode assembly, and the DC cathode conductor are connected to form a conductive electrolysis reaction circuit for water molecules.

10. The vehicle headlight rear cover assembly with desiccant for unidirectional defogging via active electrolysis of water molecules, as described in claim 8, is characterized in that... The cathode catalyst layer is a cathode platinum-carbon Pt / C catalyst layer, the proton exchange membrane is a perfluorosulfonic acid proton exchange membrane or a perfluorosulfonic acid proton exchange membrane reinforced with an ePTFE microporous membrane, the anode catalyst layer is an anode platinum-carbon Pt / C catalyst layer, and the anode porous foil is an anode platinum-titanium Pt / Ti porous foil.

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