An electrolytic rear lamp cover for removing water molecules from a vehicle lamp

Abstract

The application discloses a car lamp rear cover component for removing water molecules in electrolytic car lamps, which comprises a cover body, at least one rapid moisture removal channel is arranged on the cover body, an air flow channel of the rapid moisture removal channel is equipped with an active electrolytic water molecule device, and the active electrolytic water molecule device is a one-way active electrolytic water molecule device for reducing humidity in a limited space by discharging oxygen outward or a safe active electrolytic water molecule device for reducing humidity in a small space. Through the above manner, the active electrolytic water molecule device can electrolyze water molecules in the car lamp under the condition of power supply, and the function module can work persistently to reduce the humidity in the car lamp persistently, so that the humidity is maintained at a very low level, the air in the car lamp is in a dry state, no fogging phenomenon occurs on the mirror surface or smooth surface in the car lamp, the performance of the car lamp is effectively exerted, and no fogging phenomenon occurs when the car is started after the car is parked for a long time.

Description

Technical Field

[0001] This invention relates to the field of vehicle headlight rear covers, and in particular to a vehicle headlight rear cover component for dehumidifying water molecules inside the headlight by electrolysis. 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 rear cover component for dehumidifying water molecules inside a car lamp by electrolysis. When powered on, it can continuously electrolyze water molecules in the air inside the car lamp, thereby accelerating the reduction of humidity inside the lamp 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 rear cover component for dehumidifying water molecules inside a car lamp by electrolysis, comprising: a cover body disposed on the air convection path inside and outside the car lamp, the cover body having at least one rapid dehumidification channel, and an active electrolysis water molecule device assembled on the air flow channel of the rapid dehumidification channel, wherein the active electrolysis water molecule device is a unidirectional active electrolysis water molecule device that discharges oxygen outward to reduce the humidity in a limited space or a safe active electrolysis water molecule device that reduces the humidity in a small space.

[0007] In a preferred embodiment of the present invention, the active water electrolysis molecule device and the rapid dehumidification channel are connected by means of threaded connection, interference fit, adhesive or snap fastener.

[0008] In a preferred embodiment of the present invention, the connection method between the cover and the plastic housing of the vehicle headlight includes snap-fit ​​connection, threaded connection or flange port connection.

[0009] In a preferred embodiment of the present invention, the active water molecule electrolysis device for unidirectionally reducing humidity in a confined space by venting oxygen to the outside 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.

[0010] 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.

[0011] In a preferred embodiment of the present invention, the active water molecule electrolysis device for safely reducing humidity in a small space includes a membrane electrode assembly. The membrane electrode assembly divides the airflow channel into an anode electrolysis chamber and a cathode cavity. The anode electrolysis chamber is disposed facing the inside of the headlight and has a pure iron foil sheet at its port for airflow. The pure iron foil sheet absorbs oxygen generated by the electrolysis of water molecules in the anode electrolysis chamber of the membrane electrode assembly. The cathode cavity is disposed facing the outside of the headlight and has an ePTFE microporous breathable protective membrane at its port.

[0012] In a preferred embodiment of the present invention, the membrane electrode assembly includes an anode porous foil mesh, 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 DC anode conductor is disposed between the anode porous foil mesh and the pure iron foil sheet, 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.

[0013] In a preferred embodiment of the present invention, the cathode catalyst layer is a 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 a platinum-carbon (Pt / C) catalyst layer, and the anode porous foil is a platinum-titanium (Pt / Ti) porous foil. The conductive carbon paper diffusion layer is a conductor in the electrolytic circuit with micropores.

[0014] 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, which can continuously reduce the humidity inside the car headlight and maintain 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, so that the headlight performance can be effectively utilized, 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. Attached Figure Description

[0015] 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 rear cover component of the vehicle lamp for dehumidifying water molecules inside the vehicle lamp according to the present invention; Figure 2 This is a schematic diagram of another preferred embodiment of the rear cover component of the vehicle lamp for dehumidifying water molecules inside the lamp using electrolysis, according to the present invention. Detailed Implementation

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] Please see Figure 1 The embodiments of the present invention include: A rear cover component for dehumidifying water molecules inside an electrolytic car lamp includes: a cover 1 disposed on the air convection path inside and outside the car lamp; the cover 2 is connected to the plastic shell of the car lamp 3 by means of snap-fit, threaded connection or flange port connection, and an O-ring 21 is provided at the connection.

[0023] The cover 1 has at least one rapid dehumidification channel, and the air flow channel of the rapid dehumidification channel is equipped with an active water electrolysis device 3. The active water electrolysis device 3 is a unidirectional active water electrolysis device 3 that discharges oxygen to the outside and reduces the humidity in a limited space.

[0024] The active water electrolysis molecule device 3 is connected to the rapid dehumidification channel by means of threaded connection, interference fit, adhesive or snap fastener.

[0025] The active water molecule electrolysis device 3, which unidirectionally reduces humidity in a confined space by expelling oxygen, includes a membrane electrode assembly 31. This assembly 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 faces inwards towards the headlight 2 and has a continuously unidirectionally permeable coating membrane 35 at its port. The cathode cavity 33 faces outwards towards the headlight 2 and has an ePTFE microporous breathable protective membrane 36 at its port.

[0026] 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).

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.)

[0037] 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.

[0038] Please see Figure 2 The embodiments of the present invention include: A rear cover component for dehumidifying water molecules inside an electrolytic car lamp includes: a cover 1 disposed on the air convection path inside and outside the car lamp; the cover 2 is connected to the plastic shell of the car lamp 3 by means of snap-fit, threaded connection or flange port connection, and an O-ring 21 is provided at the connection.

[0039] The cover 1 has at least one rapid dehumidification channel, and the air flow channel of the rapid dehumidification channel is equipped with an active water electrolysis device 3. The active water electrolysis device 3 is a unidirectional active water electrolysis device 3 that discharges oxygen to the outside and reduces the humidity in a limited space.

[0040] The active water electrolysis molecule device 3 is connected to the rapid dehumidification channel by means of threaded connection, interference fit, adhesive or snap fastener.

[0041] The active water molecule electrolysis device 3 for safely reducing humidity in small spaces includes a membrane electrode assembly 31. The membrane electrode assembly 31 divides the airflow channel into an anode electrolysis chamber 32 and a cathode chamber 33. The anode electrolysis chamber 32 faces inwards towards the headlight 2 and has a pure iron foil 34 at its port for airflow. The pure iron foil 34 has a mesh-like structure. The pure iron foil 34 absorbs oxygen generated by the electrolysis of water molecules in the anode electrolysis chamber 32 of the membrane electrode assembly 31. The cathode chamber 33 faces outwards towards the headlight 2 and has an ePTFE microporous breathable protective membrane 36 at its port. In a preferred embodiment, a through-hole cover plate 361 is provided at the port, and the ePTFE microporous breathable protective membrane 36 is disposed on the end face of the through-hole cover plate 362.

[0042] 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 the electrolysis device and effectively exerting the efficiency of electrolytic dehumidification.

[0043] 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 DC anode conductor 37 is disposed between the anode porous foil 311 and the pure iron foil 34. 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.

[0044] The active water electrolysis molecule device 3 for reducing humidity in small spaces also includes several elastic sealing rings 39 and insulating seals 40 arranged around the water electrolysis molecule reaction circuit to prevent humidity in the external atmosphere from seeping into the interior of smart helmet displays, vehicle lights, monitoring probes, image detection, lidar detection sensors, etc.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] The pure iron foil 34 absorbs oxygen generated by the electrolysis of water molecules on the anode side of the electrode assembly. The pure iron foil 34 has a mesh-like structure, which can be selected or omitted by the customer depending on their needs. The oxygen atoms or molecules released by electrolysis react chemically with the porous iron wire mesh foil in the following equation: O2 + Fe → FeO2. Water molecules released into the internal space under the action of the platinum-carbon catalyst on the anode side, along with the oxygen already present inside, are eliminated by the oxidation reaction of the pure iron. This prevents the internal electrical components and circuits from being corroded by oxygen-rich atoms, maintaining a low internal oxygen concentration and avoiding the risk of spontaneous combustion caused by excessive internal oxygen concentration. The moisture content in the internal air is also continuously reduced under the action of the electrolysis device, resulting in a consistently low humidity level and a dry interior. Even with a low dew point in the external environment, smooth surfaces such as smart helmet displays, headlights, monitoring probes, image detectors, and lidar sensors do not experience fogging or condensation. This is a significant new innovation of the device, protecting the internal electronic components such as chips, integrated circuits, circuits, and PI insulation layers of smart helmet displays, headlights, monitoring probes, image detectors, and lidar sensors from corrosion in an oxygen-rich environment. This results in more reliable electrical performance, a lower failure rate, and a longer lifespan.

[0049] H2 produced by electrolysis under the action of 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 and hazards caused by hydrogen accumulation in the cathode chamber.

[0050] The innovative structure of the active water electrolysis device uses a proton exchange membrane with good chemical stability, proton conductivity, and gas separation as a solid electrolyte, which can effectively prevent electron transfer. The 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. The hydrogen atoms electrolyzed at the cathode, along with the water molecules and hydrogen gas synthesized from them, diffuse through the 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.

[0051] The working principle of this invention is as follows: The rear cover of the car lamp, which dehumidifies by electrolyzing water molecules inside the lamp, is connected to the car lamp. The cathode and anode conductor terminals of either the active water molecule electrolysis device (which discharges oxygen outward and reduces humidity in a confined space) or the safe active water molecule electrolysis device (which reduces humidity in a small space) are connected to a power source and activated. This allows the active water molecule electrolysis device to continuously electrolyze water molecules in the air inside the car lamp, accelerating the reduction of humidity inside the lamp. The humidity inside the lamp is significantly lower than the dew point temperature of the external environment, preventing fogging on the mirror or smooth surface inside the car lamp and ensuring the lamp's performance is fully utilized. If the lamp stops working, a backup power source can be used to provide power to the active water molecule electrolysis device of this invention, ensuring the lamp's performance is always effective.

[0052] 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 rear cover component for dehumidifying water molecules inside a vehicle lamp using electrolysis, characterized in that, include: A cover is installed on the air convection path inside and outside the vehicle headlights. The cover has at least one rapid dehumidification channel. An active water electrolysis device is installed on the air flow channel of the rapid dehumidification channel. The active water electrolysis device is either a unidirectional active water electrolysis device that discharges oxygen to the outside and reduces the humidity in a limited space, or a safe active water electrolysis device that reduces the humidity in a small space.

2. The rear cover component for dehumidifying water molecules inside a car lamp according to 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.

3. The rear cover component for dehumidifying water molecules inside a car lamp according to claim 1, characterized in that, The connection between the cover and the plastic housing of the headlight can be achieved through snap-fit, threaded connection, or flange port connection.

4. The rear cover component for dehumidifying water molecules inside a car lamp according to claim 1, characterized in that, An active water molecule electrolysis device that unidirectionally reduces humidity in a confined space by expelling oxygen includes a membrane electrode assembly. The membrane electrode assembly divides the airflow channel into an anode electrolysis chamber, a cathode chamber, and an oxygen exhaust channel. The anode electrolysis chamber is positioned facing the inside of the headlight and has a continuously unidirectionally permeable coating membrane at its port. The cathode chamber 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.

5. The rear cover component for dehumidifying water molecules inside a car lamp according to claim 4, 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.

6. The rear cover component for dehumidifying water molecules inside a car lamp according to claim 1, characterized in that, An active water molecule electrolysis device for safely reducing humidity in small spaces includes a membrane electrode assembly. The membrane electrode assembly divides the airflow channel into an anode electrolysis chamber and a cathode cavity. The anode electrolysis chamber is positioned facing inwards towards the headlight and has a pure iron foil sheet at its port for airflow. The pure iron foil sheet absorbs oxygen generated by the electrolysis of water molecules in the anode electrolysis chamber of the membrane electrode assembly. The cathode cavity is positioned facing outwards towards the headlight and has an ePTFE microporous breathable protective membrane at its port.

7. The rear cover component for dehumidifying water molecules inside an electrolytic automotive lamp according to claim 6, characterized in that, The membrane electrode assembly includes an anode porous foil mesh, 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 DC anode conductor is located between the anode porous foil mesh and the pure iron foil sheet, 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.

8. The rear cover component for dehumidifying water molecules inside a vehicle lamp according to claim 5 or 7, characterized in that, The cathode catalyst layer is a 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 a platinum-carbon (Pt / C) catalyst layer; and the anode porous foil is a platinum-titanium (Pt / Ti) porous foil. The conductive carbon paper diffusion layer is a conductor in the electrolytic circuit with micropores.

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