Car roof integrated intelligent light energy air purification system

Abstract

The invention discloses a car roof integrated intelligent light energy air purification system which comprises a light energy catalytic purification layer arranged on the top of an external car and used for conducting photocatalytic purification on air entering the car; the solar driving module is electrically connected with the light energy catalytic purification layer and used for providing electric energy for the air purification system; the central control module is in signal connection and electric connection with the light energy catalytic purification layer and the solar driving module and is used for controlling operation of the air purification system according to the environmental parameters; the air purification system is arranged on the external bearing part or the top of the external automobile so as to be used for purifying air in the internal space of the external automobile, the air can be directly treated, the internal space of the automobile can be saved, and the effects of continuously purifying the internal environment of the automobile and enhancing driving safety and riding health are achieved.

Description

Technical Field

[0001] This invention relates to the field of vehicle air purification technology, and in particular to a roof-integrated intelligent solar-powered air purification system. Background Technology

[0002] With the increasing popularity of automobiles and the acceleration of urbanization, in-vehicle air quality has become a critical issue concerning the health of drivers and passengers. Interior trim materials easily release volatile organic compounds such as formaldehyde and benzene, turning the enclosed space of the vehicle into a potential "pollution zone." Traditional solutions mainly rely on in-vehicle air conditioning filters or onboard air purifiers. These methods have significant limitations: built-in filters require regular replacement and can only filter particulate matter, with limited capacity to handle gaseous pollutants; while onboard purifiers not only occupy valuable interior space, but their power supply is entirely dependent on the car battery, increasing engine load and fuel consumption with prolonged use, or posing a risk of battery depletion when the engine is off. Furthermore, existing technologies are mostly passive response purification, lacking the ability to intelligently adjust based on external air quality, failing to achieve an optimal balance between purification efficiency and energy consumption. Therefore, there is an urgent need in this field for an innovative air purification solution that is energy-self-sufficient, highly efficient in purification, intelligently controlled, and does not occupy in-vehicle space. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention provides a roof-integrated intelligent solar-powered air purification system.

[0004] The technical solution adopted by this invention to solve its technical problem is: This invention provides a roof-mounted integrated intelligent solar-powered air purification system, comprising: A photocatalytic purification layer is installed on the exterior of the car roof to purify the air entering the vehicle through photocatalysis. The solar-powered module, electrically connected to the photocatalytic purification layer, is used to provide power to the air purification system. The central control module is connected to the photocatalytic purification layer and the solar drive module via signal and electrical connections, respectively, and is used to control the operation of the air purification system according to environmental parameters. The air purification system is installed on the external load-bearing structure or the roof of the vehicle to purify the air inside the vehicle.

[0005] Preferably, the photocatalytic purification layer includes a TiO2 / graphene composite film and a UV-LED array; the photocatalytic purification layer is curved for adhesion to the exterior of the vehicle roof; the TiO2 / graphene composite film operates under diffused light conditions with an intensity ≥2000 lux; the UV-LED array assists the TiO2 / graphene composite film in catalytic reactions under diffused light conditions with an intensity <2000 lux; the UV-LED array wavelength is 365 nm ± 5 nm. By combining the TiO2 / graphene composite film and the UV-LED array, it is possible to achieve… The photocatalytic reaction proceeds continuously and efficiently under illumination. Its curved design allows for seamless integration with the streamlined roof structure, maximizing the use of the roof surface area and enhancing the overall aesthetics of the vehicle. The TiO2 / graphene composite film utilizes graphene to improve the separation efficiency and catalytic activity of photogenerated electrons, significantly enhancing visible light utilization and pollutant degradation efficiency. The UV-LED array (365nm±5nm) serves as a supplementary excitation light source, ensuring that TiO2 can be effectively activated when light is insufficient, thereby achieving stable and efficient air purification throughout all weather and time periods.

[0006] Preferably, the photocatalytic purification layer also includes an electrostatic dust collection plate. The electrostatic dust collection plate is used to achieve self-cleaning of the photocatalytic purification layer through reverse pulse voltage. By applying reverse pulse voltage, the electrostatic dust collection plate generates a strong electrostatic field to adsorb and shake off the particulate matter deposited on the surface of the catalytic layer, thereby playing a role in actively cleaning the photocatalytic purification layer. This effectively solves the problem of decreased catalytic activity caused by particulate matter coverage, and achieves the effect of maintaining the long-term stable purification efficiency of the system and reducing the need for manual maintenance.

[0007] Preferably, the solar drive module includes a flexible perovskite photovoltaic film, a DC-DC converter, and a solid-state energy storage battery. The output of the flexible perovskite photovoltaic film is electrically connected to the input of the DC-DC converter to transmit the generated electrical energy to the DC-DC converter. One output of the DC-DC converter is electrically connected to the photocatalytic purification layer and the central control module for priority power supply, and the other is electrically connected to the solid-state energy storage battery to store the remaining electrical energy. The output of the solid-state energy storage battery is electrically connected to the photocatalytic purification layer and the central control module to supply power to the photocatalytic purification layer and the central control module when there is insufficient sunlight. The flexible perovskite photovoltaic film, with its light, thin, and flexible characteristics, perfectly fits the curved surface of the vehicle roof and efficiently collects solar energy. The DC-DC converter performs voltage conversion and power dispatching, prioritizing the real-time operation of the purification system and intelligently storing surplus electrical energy. The solid-state energy storage battery continuously supplies power to the system in the absence of sunlight. The three components work together to achieve self-sufficiency in system energy, seamless operation, and low dependence on and burden on the vehicle's power grid.

[0008] Preferably, the central control module includes a multi-parameter AQI sensor and a main control chip; the signal output terminal of the multi-parameter AQI sensor is connected to the input terminal of the main control chip to collect in-vehicle environmental parameters, realizing accurate and real-time monitoring and intelligent decision-making of in-vehicle air quality (such as PM2.5, CO2, VOCs, etc.), providing accurate data basis for the system to operate on demand, thereby achieving the effect of changing the purification operation from "continuous blind action" to "intelligent start-up on demand", thus optimizing energy consumption and improving purification accuracy.

[0009] Preferably, the central control module also includes a waterproof relay. The output terminal of the main control chip is electrically connected to the control terminal of the waterproof relay, which is used to issue control commands according to environmental parameters. The waterproof relay is connected in series in the power supply circuit of the photocatalytic purification layer and the external vehicle air conditioning auxiliary unit. It is used to switch the power supply of the external vehicle air conditioning auxiliary unit on and off according to the control command. It plays the role of intelligently and reliably switching the power supply of the photocatalytic purification layer and the vehicle air conditioning auxiliary unit on and off according to environmental parameters, realizing the linkage control and automated operation of the purification system and the vehicle air conditioning system. At the same time, its waterproof characteristics ensure the stability and safety of the circuit in the harsh environment of the roof.

[0010] Preferably, the central control module obtains the vehicle engine status via the CAN bus and automatically activates the air purification system when the vehicle starts. When the vehicle is parked, the fresh air circulation mode is activated when the sensor detects that the CO2 concentration is greater than 1000ppm or the PM2.5 concentration is greater than 75μg / m³. This effectively integrates the purification system into the vehicle's electronic architecture, achieving a dual-mode intelligent switching effect: automatically activating to ensure basic air quality while driving, and intelligently activating fresh air circulation to pre-purify the cabin when the air quality deteriorates while parked. This ensures that users can enter a fresh and healthy in-vehicle environment in any driving scenario.

[0011] Preferably, the air purification system is located on an external support component and then mounted on the roof of the vehicle. This decouples the core purification module from the roof structure, achieving modularity in system design, flexibility in installation, and universality for different vehicle platforms.

[0012] Preferably, the external load-bearing component is a transparent panoramic sunroof, which includes two layers of light-transmitting glass with a photocatalytic film between them. This ensures that the visible light transmittance of the transparent panoramic sunroof is not less than 70% and the ultraviolet blocking rate is not less than 99%. While ensuring the sunroof's core functions of high light transmittance and ultraviolet protection, it also has the function of passive air purification. This achieves a deep integration of functional and structural components, and realizes the effect of active air purification without sacrificing the driving experience and comfort.

[0013] Preferably, the external load-bearing component is a full fabric structure. The full fabric structure adopts 3D flyweave technology and is covered with photovoltaic film, which realizes the ultimate lightweight, flexibility and high degree of freedom of shape of the system. It is especially suitable for convertibles or models that pursue special design language, and realizes the integration of the air purification system into the roof in an almost invisible way, while taking into account the effects of energy collection and ventilation.

[0014] The beneficial effects of this invention are as follows: The roof-integrated intelligent solar-powered air purification system utilizes photocatalytic purification layer technology to efficiently decompose pollutants in the air entering the vehicle, significantly improving in-vehicle air quality and removing harmful substances such as bacteria and volatile organic compounds; the solar-powered module collects solar energy to power the system, achieving energy self-sufficiency, reducing vehicle battery dependence, and promoting environmental protection and energy conservation; the central control module intelligently regulates system operation based on real-time environmental parameters, achieving automated optimization of purification efficiency, reducing energy consumption, and improving user comfort; the overall system integrated into the roof or external load-bearing component allows for direct air treatment and saves interior space, achieving continuous purification of the in-vehicle environment, enhancing driving safety and passenger health. 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. The accompanying 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.

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram illustrating the working principle of the intelligent solar-powered air purification system of the present invention; Figure 2 This is an electrical connection topology diagram of the intelligent solar-powered air purification system of the present invention. Detailed Implementation

[0018] Reference Figures 1 to 2 A roof-integrated intelligent solar-powered air purification system, comprising: A photocatalytic purification layer is installed on the exterior of the car roof to purify the air entering the vehicle through photocatalysis. The solar-powered module, electrically connected to the photocatalytic purification layer, is used to provide power to the air purification system. The central control module is connected to the photocatalytic purification layer and the solar drive module via signal and electrical connections, respectively, and is used to control the operation of the air purification system according to environmental parameters. The air purification system is installed on the external load-bearing structure or the roof of the vehicle to purify the air inside the vehicle.

[0019] With the above structural design, in use, this roof-integrated intelligent solar-powered air purification system utilizes the photocatalytic purification layer to efficiently decompose pollutants in the air entering the vehicle using photocatalytic technology, achieving a significant improvement in in-vehicle air quality and removing harmful substances such as bacteria and volatile organic compounds. The solar-powered module collects solar energy to power the system, achieving energy self-sufficiency, reducing vehicle battery dependence, and promoting environmental protection and energy conservation. The central control module intelligently adjusts the system operation based on real-time environmental parameters, achieving automated optimization of purification efficiency, reducing energy consumption, and improving user comfort. The overall system, integrated into the roof or external load-bearing components, can directly process air and save interior space, achieving continuous purification of the in-vehicle environment, enhancing driving safety and passenger health.

[0020] Specifically, the photocatalytic purification layer includes a TiO2 / graphene composite film and a UV-LED array. The photocatalytic purification layer is curved for adhesion to the exterior of the vehicle roof. The TiO2 / graphene composite film operates under diffused light conditions with an intensity ≥2000 lux, while the UV-LED array assists the TiO2 / graphene composite film in catalytic reactions under diffused light conditions with an intensity <2000 lux. The UV-LED array has a wavelength of 365nm ± 5nm. By combining the TiO2 / graphene composite film and the UV-LED array, it is possible to achieve… The photocatalytic reaction proceeds continuously and efficiently under illumination. Its curved surface design allows for seamless integration with the streamlined structure of the roof, maximizing the use of the roof surface area and enhancing the overall aesthetics of the vehicle. The TiO2 / graphene composite film utilizes graphene to improve the separation efficiency and catalytic activity of photogenerated electrons, significantly enhancing the utilization rate of visible light and the degradation efficiency of pollutants. The UV-LED array (365nm±5nm) serves as a supplementary excitation light source, ensuring that TiO2 can be effectively activated when there is insufficient light, thereby achieving a stable and efficient air purification effect in all weather conditions and at all times.

[0021] Specifically, the photocatalytic purification layer also includes an electrostatic dust collection plate. The electrostatic dust collection plate is used to achieve self-cleaning of the photocatalytic purification layer through reverse pulse voltage. By applying reverse pulse voltage, the electrostatic dust collection plate generates a strong electrostatic field to adsorb and shake off the particulate matter deposited on the surface of the catalytic layer, thus playing a role in actively cleaning the photocatalytic purification layer. This effectively solves the problem of decreased catalytic activity caused by particulate matter coverage, and achieves the effect of maintaining the long-term stable purification efficiency of the system and reducing the need for manual maintenance.

[0022] Specifically, the electrostatic dust collection plate is used to adsorb particulate matter in the air; and it achieves self-cleaning by periodically applying a reverse pulse voltage.

[0023] Specifically, the solar-powered module includes a flexible perovskite photovoltaic film, a DC-DC converter, and a solid-state energy storage battery. The output of the flexible perovskite photovoltaic film is electrically connected to the input of the DC-DC converter to transmit the generated electrical energy to the converter. One output of the DC-DC converter is electrically connected to the photocatalytic purification layer and the central control module for priority power supply, while the other is electrically connected to the solid-state energy storage battery to store surplus energy. The output of the solid-state energy storage battery is also electrically connected to the photocatalytic purification layer and the central control module to supply power to them when sunlight is insufficient. The flexible perovskite photovoltaic film, with its lightweight, thin, and flexible characteristics, perfectly fits the curved surface of the vehicle roof and efficiently collects solar energy. The DC-DC converter performs voltage conversion and power dispatching, prioritizing the real-time operation of the purification system and intelligently storing surplus energy. The solid-state energy storage battery continuously supplies power to the system in the absence of sunlight. The three components work together to achieve self-sufficiency in energy, seamless operation, and low dependence on and burden on the vehicle's power grid.

[0024] Specifically, the central control module includes a multi-parameter AQI sensor and a main control chip. The signal output terminal of the multi-parameter AQI sensor is connected to the input terminal of the main control chip to collect in-vehicle environmental parameters, realizing accurate and real-time monitoring and intelligent decision-making of in-vehicle air quality (such as PM2.5, CO2, VOCs, etc.). This provides accurate data for the system to operate on demand, thereby changing the purification operation from "continuous blind action" to "intelligent start-up on demand," thus optimizing energy consumption and improving purification accuracy.

[0025] Specifically, the central control module also includes a waterproof relay. The output of the main control chip is electrically connected to the control terminal of the waterproof relay, which is used to issue control commands based on environmental parameters. The waterproof relay is connected in series in the power supply circuit of the photocatalytic purification layer and the external vehicle air conditioning auxiliary unit. It is used to switch the power supply of the external vehicle air conditioning auxiliary unit on and off according to the control commands. It plays the role of intelligently and reliably switching the power supply of the photocatalytic purification layer and the vehicle air conditioning auxiliary unit on and off according to environmental parameters, realizing the linkage control and automated operation of the purification system and the vehicle air conditioning system. At the same time, its waterproof characteristics ensure the stability and safety of the circuit in the harsh environment of the roof.

[0026] Specifically, the central control module obtains the vehicle engine status via the CAN bus and automatically activates the air purification system when the vehicle starts. When the vehicle is parked, the fresh air circulation mode is activated when the sensor detects a CO2 concentration greater than 1000ppm or a PM2.5 concentration greater than 75μg / m³. This effectively integrates the purification system deeply into the vehicle's electronic architecture, achieving a dual-mode intelligent switching effect: automatically activating to ensure basic air quality while driving, and intelligently activating fresh air circulation to pre-purify the cabin when the air quality deteriorates while parked. This ensures that users can enter a fresh and healthy in-car environment in any driving scenario.

[0027] Specifically, the air purification system is located on the external support component and then mounted on the roof of the vehicle. This decouples the core purification module from the roof structure, achieving modularity in system design, flexibility in installation, and universality for different vehicle platforms.

[0028] Specifically, the external load-bearing component is a transparent panoramic sunroof, which consists of two layers of translucent glass with a photocatalytic film between them. This ensures that the visible light transmittance of the transparent panoramic sunroof is no less than 70% and the ultraviolet blocking rate is no less than 99%. While guaranteeing the sunroof's core functions of high light transmittance and UV protection, it also has the function of passive air purification. This achieves a deep integration of functional and structural components, enabling active air purification without sacrificing the driving experience and comfort.

[0029] Specifically, the external load-bearing components are made of all-fabric structure, which adopts 3D flyweave technology and is covered with photovoltaic film. This achieves the ultimate lightweight, flexibility and high degree of freedom in styling of the system, making it particularly suitable for convertibles or models that pursue a special design language. It integrates the air purification system into the roof in a nearly invisible way, while also taking into account the effects of energy collection and ventilation.

[0030] Specifically, the roof integration solution in this embodiment mainly includes a transparent panoramic sunroof and a full fabric structure, namely the following two: Transparent panoramic sunroof type: Utilizing a double-layered laminated glass design with an embedded photocatalytic film. This design not only ensures the strength and safety of the glass but also significantly improves optical performance. Its visible light transmittance is over 70%, ensuring ample natural light indoors, while its UV blocking rate reaches 99%, effectively blocking harmful UV rays and protecting occupants and belongings from UV damage, creating a healthy and comfortable in-car environment.

[0031] All-fabric exterior design: Utilizing advanced 3D flyweave technology, the photovoltaic film is perfectly wrapped within, resulting in a lightweight yet robust overall structure. Weighing only 1.8 kg per square meter, it significantly reduces the burden on the vehicle body while greatly improving ease of use. Furthermore, this technology reduces the drag coefficient by 12%, effectively minimizing the impact of wind on the structure and enhancing its stability and durability under varying weather conditions.

[0032] This invention designs a roof-integrated intelligent solar-powered air purification system, which consists of three parts: a photocatalytic purification layer, a solar-powered drive module, and a central control module. Its working principle is described as follows: Intelligent triggering mechanism: Automatically activated when the vehicle starts, the engine status is obtained via the CAN bus; when parked, if the sensor detects CO2 > 1000ppm or PM2.5 > 75μg / m³, the fresh air circulation mode is immediately activated. Multi-system collaborative operation: Photocatalytic purification layer: Utilizing the curved surface of the roof to maximize the light-receiving area, the TiO2 / graphene film decomposes formaldehyde (efficiency up to 93%) and benzene compounds (efficiency up to 88%) under natural light (including diffuse light above 2000 lux on cloudy days); UV-LED array assists in exciting the catalytic reaction with a wavelength of 365nm±5nm and a power consumption of only 3.5W.

[0033] Solar drive module: The flexible photovoltaic thin film generates an average of 0.8-1.2 kWh of electricity per day, which is preferentially supplied to the photocatalytic purification layer (energy consumption ≤40W), and the remaining power is stored in solid-state batteries (cycle life ≥5000 times); under low light conditions, the energy storage unit can maintain the system operation for 72 hours.

[0034] Central control module: Dynamically adjusts fan speed (800-2500rpm stepless speed regulation) through multi-parameter AQI sensor fusion algorithm (PM2.5+CO2+temperature and humidity); linked with vehicle air conditioning, PTC preheating is activated at -20℃ to prevent icing, and the air-cooled heat dissipation module is activated at 60℃.

[0035] Specifically, the PTC preheating component can be integrated and installed near the air inlet of the roof air purification system or at the beginning of the air duct, thereby heating the air entering the roof air purification system and protecting the photocatalytic purification layer and the air duct.

[0036] Purification effect achieved: Through photocatalytic decomposition and filtration, harmful gases and particulate matter are efficiently removed, ultimately outputting clean air; fresh air circulation reduces CO2 concentration and improves oxygen content inside the vehicle. In a 15m³ vehicle compartment, PM2.5 is reduced from 500μg / m³ to 35μg / m³ in just 8 minutes. The entire process adopts a consumable-free design, avoiding filter replacement and achieving low or zero maintenance cost purification. The electrostatic dust collection plate can be self-cleaned through reverse pulse voltage, with a lifespan exceeding 100,000 hours.

[0037] The modules in this application are described as follows:

[0038] The advantages and benefits of this system are shown in the table below:

[0039] Specifically, Figure 2 The relevant technical features are as follows: Flexible perovskite photovoltaic thin film module technology features: using CIGS / CuInGaSe2 semiconductor materials, combined with PET substrate and laser etching process, to achieve high-efficiency photoelectric conversion (efficiency ≥22%) under a bending radius of 180°, and adaptable to non-planar installation scenarios.

[0040] MPPT controller module technical features: Based on the fusion algorithm of perturbation observation method and incremental conductance method, it realizes dynamic tracking of light intensity in a wide range of 50-1000W / m², with power output fluctuation ≤±2%, thereby improving the overall power generation efficiency of the system.

[0041] Technical features of the bidirectional DC-DC converter module: It adopts synchronous rectification topology and digital control technology to realize automatic switching between boost and buck modes, voltage regulation range of 12-48V, and conversion efficiency ≥98%.

[0042] Solid-state energy storage battery module technical features: It uses lithium iron phosphate (LiFePO4) cells and is equipped with a battery management system (BMS) to achieve accurate SOC estimation and thermal management, with a cycle life of ≥3000 cycles @ 80% DOD.

[0043] STM32 main control module technical features: Based on the ARM Cortex-M7 core, it integrates a CAN bus interface and a 5G-V2X communication module, supports OTA remote upgrades and fault self-diagnosis, and realizes real-time monitoring of system status and strategy optimization.

[0044] The actuator component module features include a PWM speed-regulating fan (air volume 0-500m³ / h), a UV-LED array (wavelength 365nm), and a multi-parameter sensor array (PM2.5 / CO2 / temperature and humidity), which achieves data interaction and collaborative control with the main control module through the I²C bus.

[0045] Specifically, in this embodiment, the fan and its fresh air circulation can be achieved through external vehicles.

[0046] An automobile includes the aforementioned roof-integrated intelligent solar-powered air purification system.

[0047] The above descriptions provide one or more embodiments in conjunction with specific details, but do not imply that the specific implementation of the present invention is limited to these descriptions. Any methods or structures that are similar to or identical to those of the present invention, or any technical deductions or substitutions made based on the concept of the present invention, should be considered within the scope of protection of the present invention.

Claims

1. A roof-mounted integrated intelligent solar-powered air purification system, characterized in that, include: A photocatalytic purification layer is installed on the exterior of the car roof to purify the air entering the vehicle through photocatalysis. The solar-powered module, electrically connected to the photocatalytic purification layer, is used to provide power to the air purification system. The central control module is connected to the photocatalytic purification layer and the solar drive module via signal and electrical connections, respectively, and is used to control the operation of the air purification system according to environmental parameters. The air purification system is installed on the external load-bearing structure or the roof of the vehicle to purify the air inside the vehicle.

2. The roof-mounted integrated intelligent solar-powered air purification system according to claim 1, characterized in that: The photocatalytic purification layer includes a TiO2 / graphene composite film and a UV-LED array. The photocatalytic purification layer is curved and designed to fit onto the exterior of the car roof. The TiO2 / graphene composite film operates under diffused light conditions with an intensity ≥2000 lux. The UV-LED array is used to assist the TiO2 / graphene composite film in catalytic reactions under diffused light conditions with an intensity <2000 lux. The wavelength of the UV-LED array is 365nm±5nm.

3. The roof-mounted integrated intelligent solar-powered air purification system according to claim 2, characterized in that: The photocatalytic purification layer also includes an electrostatic dust collection plate, which is used to achieve self-cleaning of the photocatalytic purification layer through reverse pulse voltage.

4. The roof-mounted integrated intelligent solar-powered air purification system according to claim 1, characterized in that: The solar drive module includes a flexible perovskite photovoltaic thin film, a DC-DC converter, and a solid-state energy storage battery; the output end of the flexible perovskite photovoltaic thin film is electrically connected to the input end of the DC-DC converter to deliver the generated electrical energy to the DC-DC converter. One output of the DC-DC converter is electrically connected to the photocatalytic purification layer and the central control module for priority power supply, and the other output is electrically connected to the solid-state energy storage battery to store the remaining electrical energy; the output of the solid-state energy storage battery is electrically connected to the photocatalytic purification layer and the central control module to supply power to the photocatalytic purification layer and the central control module when the light is insufficient.

5. The roof-mounted integrated intelligent solar-powered air purification system according to claim 1, characterized in that: The central control module includes a multi-parameter AQI sensor and a main control chip; the signal output terminal of the multi-parameter AQI sensor is connected to the input terminal of the main control chip to collect in-vehicle environmental parameters.

6. The roof-mounted integrated intelligent solar-powered air purification system according to claim 5, characterized in that: The central control module also includes a waterproof relay. The output terminal of the main control chip is electrically connected to the control terminal of the waterproof relay to issue control commands based on environmental parameters. The waterproof relay is connected in series in the power supply circuit of the photocatalytic purification layer and the external vehicle air conditioning auxiliary unit to switch the power supply of the external vehicle air conditioning auxiliary unit on and off according to the control commands.

7. The roof-mounted integrated intelligent solar-powered air purification system according to claim 6, characterized in that: The central control module obtains the vehicle engine status via the CAN bus and automatically activates the air purification system when the vehicle starts; when the vehicle is parked, the fresh air circulation mode is activated when the sensor detects that the CO2 concentration is greater than 1000ppm or the PM2.5 concentration is greater than 75μg / m³.

8. The roof-mounted integrated intelligent solar-powered air purification system according to claim 1, characterized in that: The air purification system is located on the external support structure and is then installed on the roof of the vehicle via the external support structure.

9. The roof-mounted integrated intelligent solar-powered air purification system according to claim 8, characterized in that: The external load-bearing component is a transparent panoramic skylight or a full fabric structure. The transparent panoramic skylight includes two layers of light-transmitting glass, with a photocatalytic film between the two layers of light-transmitting glass, so that the visible light transmittance of the transparent panoramic skylight is not less than 70% and the ultraviolet blocking rate is not less than 99%.

10. A car, characterized in that: Including the roof-integrated intelligent solar-powered air purification system as described in any one of claims 1-9.

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