Vehicle air purification system and method

Abstract

A vehicle air purification system, comprising an air disinfection and sterilization device, a disinfection and sterilization switch, a vehicle controller and a vehicle door sensor, wherein the air disinfection and sterilization device comprises an air inlet, an air quality detection unit, a pre-filtering unit, a sterilization unit and an air outlet. The air quality detection unit is integrated into the air disinfection and sterilization device, thereby shortening an air detection and purification path, reducing the air purification time, and reducing the system energy consumption. The vehicle air purification system comprises multiple air purification modes. In a purification method thereof, multiple disinfection and sterilization signals are collected to control different air purification modes, which can meet different scenario requirements and has high adaptability to multiple scenarios. When an air quality detection system fails, in-vehicle air purification can be performed by integrating other air purification modes, thereby improving the in-vehicle air purification efficiency.

Description

Vehicle air purification system and method

[0001] This application claims priority to Chinese Patent Application No. CN202410624789.1, filed on May 20, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application belongs to the field of vehicle air purification, in particular relates to a vehicle air purification system and method. BACKGROUND

[0003] Vehicle air purification generally uses an air purification system or air conditioning internal and external circulation to purify the air. If the outdoor air quality is poor, air purification through vehicle air conditioning internal and external circulation not only cannot achieve the purpose of air purification, but also will aggravate the air pollution in the vehicle.

[0004] Patent CN116672483A discloses a method for killing and purifying air in a vehicle, including a killing system, a purification system and a monitoring system, the monitoring system, the killing system and the purification system are separately arranged, which increases the energy consumption of the system and increases the purification time; only by comparing the air quality with the pre-set threshold to turn on or off the purification device, the purification method and the purification path are single, the adaptability is poor in multiple occasions, and the purification efficiency is low; when the monitoring system fails, there will be a situation that the air quality in the vehicle does not meet the standard but no air purification is performed, and the air purification efficiency in the vehicle is poor. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings of the prior art and provide a vehicle air purification system and method, which has high adaptability in multiple occasions and high air purification efficiency in the vehicle.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present application is:

[0007] A vehicle air purification system, comprising an air killing device, a killing switch, a vehicle controller, and a door sensor.

[0008] The air killing device has an air inlet, an air quality detection unit, a pre-filtering unit, a sterilization unit, and an air outlet; the air inlet is connected to the air inlet end of the air quality detection unit and the air inlet end of the pre-filtering unit through a pipeline in a switchable manner, the air outlet end of the air quality detection unit is connected to the air inlet end of the pre-filtering unit through a pipeline, the air outlet end of the pre-filtering unit is connected to the air inlet end of the sterilization unit through a pipeline, and the air outlet is connected to the air outlet end of the air quality detection unit and the air outlet end of the sterilization unit through a pipeline in a switchable manner.

[0009] The vehicle controller is electrically connected to the killing switch to collect the killing switch signal.

[0010] The whole vehicle controller is electrically connected with the vehicle door sensor to collect the vehicle door sensor signal.

[0011] The whole vehicle controller is electrically connected with the air quality detection unit to collect the air quality data detected by the air quality detection unit.

[0012] The whole vehicle controller is electrically connected with the pre-filter unit and the sterilization unit respectively to control the start and stop of the air quality detection unit, the pre-filter unit and the sterilization unit.

[0013] The air inlet of the air sterilization device is switchably connected with the air inlet end of the air quality detection unit and the air inlet end of the pre-filter unit, and the air outlet is switchably connected with the air outlet end of the air quality detection unit and the air outlet end of the sterilization unit, thereby forming multiple air purification modes. Different air purification modes are controlled by the whole vehicle controller, the sterilization switch signal, the vehicle door sensor signal and the air quality data, so that different scene requirements can be met, the adaptability is high in multiple occasions, and the air purification efficiency in the vehicle is improved. The air quality detection unit is integrated in the air sterilization device, so that the air detection and purification path is shortened, the air purification time is reduced, and the system energy consumption is reduced. When the air quality detection system fails, the air in the vehicle can be purified in combination with multiple air purification modes, and the air purification efficiency in the vehicle is high.

[0014] Further, the sterilization unit has a light source and a photocatalyst catalytic layer. The vehicle air purification system of the present application uses photocatalyst technology, and the sterilization rate is higher than that of other purification technologies, thereby effectively improving the air purification efficiency in the vehicle and improving the air quality in the vehicle. And no ozone and radiation are generated, thereby improving the safety of the environment in the vehicle.

[0015] Further, the light source is an ultraviolet lamp or an LED lamp, and the photocatalyst catalytic layer is titanium dioxide.

[0016] Further, the air quality detection unit includes at least one of the following sensors: a particulate matter sensor, a temperature sensor, a humidity sensor, and a formaldehyde sensor.

[0017] Further, the pre-filter unit has an air filter layer and / or an activated carbon filter layer. The air filter layer can be a high-efficiency air filter layer (HEPA filter).

[0018] Further, the air sterilization device is installed on the roof inside the vehicle. The present application only needs to install one set of air sterilization device on the roof inside the vehicle, thereby reducing the cost.

[0019] Further, the air sterilization device has a forced purification mode, an automatic purification mode and an air quality detection mode.

[0020] Further, the forced purification mode is that the air in the vehicle enters the air sterilization device from the air inlet, sequentially passes through the pre-filter unit and the sterilization unit, and then is discharged from the air outlet.

[0021] Further, the automatic purification mode is that the air in the vehicle enters the air sterilization device from the air inlet, sequentially passes through the air quality detection unit, the pre-filter unit and the sterilization unit, and then is discharged from the air outlet.

[0022] Further, the air quality detection mode is that the air in the vehicle enters the air quality detection unit from the air inlet, if the air quality detected by the air quality detection unit is higher than a threshold value, the air in the air quality detection unit is discharged from the air outlet, if the air quality detected by the air quality detection unit is lower than or equal to the threshold value, the air in the air quality detection unit sequentially passes through the pre-filter unit and the sterilization unit, and then is discharged from the air outlet.

[0023] Further, when the whole vehicle controller detects that the signal of the sterilization switch is valid or detects that the one vehicle door switch is actuated, the air inlet is connected with the air inlet end of the pre-filter unit, and the air outlet is connected with the air outlet end of the sterilization unit.

[0024] Otherwise, the air inlet is connected with the air inlet end of the air quality detection unit.

[0025] If the air quality detected by the air quality detection unit is higher than a threshold value, the air outlet is connected with the air outlet end of the air quality detection unit.

[0026] If the air quality detected by the air quality detection unit is lower than or equal to the threshold value, the air outlet is connected with the air outlet end of the sterilization unit.

[0027] Further, the detection step of the signal of the sterilization switch is prior to the detection step of the actuation of the vehicle door switch.

[0028] Further, the automatic purification mode and the forced purification mode are 10-15 minutes.

[0029] Further, the vehicle air purification system further comprises a display instrument, the display instrument is electrically connected with the whole vehicle controller, and the display instrument displays the air quality in the vehicle, the start and stop of the air sterilization device, and the working mode of the air sterilization device.

[0030] Based on the same inventive concept, the present application provides a vehicle air purification method, comprising:

[0031] If the first purification signal is valid, a first air purification mode is started, that is, air purification is performed by sequentially passing through pre-filtering and sterilization.

[0032] If the first purification signal is invalid, a second purification signal is collected, if the second purification signal is valid, a second air purification mode is started, that is, air purification is carried out in turn through pre-filtering and sterilization; if the second purification signal is invalid, an air quality detection mode is started, if the air quality is higher than a threshold value, the air quality detection mode is continued, if the air quality is lower than or equal to the threshold value, a third air purification mode is started, that is, air purification is carried out in turn through air quality detection, pre-filtering and sterilization.

[0033] Based on the same inventive concept, the present application provides a vehicle air purification method, comprising:

[0034] A first purification signal and a second purification signal are collected.

[0035] If either of the first purification signal and the second purification signal is valid, the air in the vehicle is purified in turn through pre-filtering and sterilization.

[0036] If both the first purification signal and the second purification signal are invalid, an air quality detection mode is started, if the air quality in the vehicle is higher than a threshold value, the air quality detection mode is continued, if the air quality in the vehicle is lower than or equal to the threshold value, the air in the vehicle is purified in turn through air quality detection, pre-filtering and sterilization.

[0037] Further, the step of judging the validity of the first purification signal is performed before the step of judging the validity of the second purification signal.

[0038] Preferably, the first purification signal is a signal of the sterilization switch; the second purification signal is a signal of the vehicle door sensor. When it is detected that the sterilization switch is pressed, the first purification signal is valid; when it is detected that the sterilization switch is not pressed, the first purification signal is invalid. When it is detected that the vehicle door switch is operated once, the second purification signal is valid, when it is detected that the vehicle door switch is not operated, the second purification signal is invalid.

[0039] Preferably, the first air purification mode is the forced purification mode, the second air purification mode is the forced purification mode, and the third air purification mode is the automatic purification mode.

[0040] The vehicle air purification method of the present application comprises multiple air purification modes, different air purification modes are controlled by multiple purification signals, different scene requirements can be met, the adaptability is high in multiple occasions, and the air purification efficiency in the vehicle is improved.

[0041] Compared with the prior art, the present application has the following advantages:

[0042] The application includes multiple air purification working modes, controls different air purification working modes through multiple purification signals, can meet different scene requirements, has high adaptability in multiple occasions, improves the air purification efficiency in the vehicle, when the air quality detection fails, can combine multiple air purification modes to purify the air in the vehicle, the air purification efficiency in the vehicle is higher, the air quality detection unit is integrated in the air sterilization device, shortens the air detection and purification path, reduces the air purification time, and reduces the system energy consumption. The air purification system of the application uses photocatalyst technology, the sterilization rate is higher than other purification technologies, effectively improves the air purification efficiency in the vehicle, improves the air quality in the vehicle, and has no ozone and radiation generation, improves the safety of the environment in the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0043] Fig. 1 is a structural diagram of the existing vehicle air purification system;

[0044] Fig. 2 is a structural diagram of the vehicle air purification system of the application;

[0045] Fig. 3 is a structural diagram of the air sterilization device of the application;

[0046] Fig. 4 is a schematic diagram of the vehicle air purification method of the application. DETAILED DESCRIPTION

[0047] The application will be described in detail below with examples. It should be noted that the examples in the application and the features in the examples can be combined with each other without conflict. For the sake of description, if the words "up", "down", "left", "right" appear in the following, they only mean the same as the up, down, left and right directions of the drawing itself, and do not limit the structure. EMBODIMENT

[0048] As shown in Fig. 2, the vehicle air purification system of the embodiment includes an air sterilization device, a display instrument, a door sensor, a sterilization switch and a vehicle controller (VCU).

[0049] As shown in Fig. 3, the air sterilization device includes an air inlet, an air quality detection unit, a pre-filtering unit, a sterilization unit and an air outlet. The air inlet is connected to the air inlet end of the air quality detection unit and the air inlet end of the pre-filtering unit through a pipeline in a switchable manner. The air outlet end of the air quality detection unit is connected to the air inlet end of the pre-filtering unit through a pipeline. The air outlet end of the pre-filtering unit is connected to the air inlet end of the sterilization unit through a pipeline. The air outlet is connected to the air outlet end of the air quality detection unit and the air outlet end of the sterilization unit through a pipeline in a switchable manner. The air outlet end of the air quality detection unit is connected to the air inlet end of the pre-filtering unit and the air outlet in a switchable manner.

[0050] The vehicle controller is electrically connected to the sterilization switch, and the vehicle controller collects the sterilization switch signal.

[0051] The vehicle controller is electrically connected with the door sensor, and the vehicle controller collects the door sensor signal.

[0052] The vehicle controller is electrically connected with the air quality detection unit, and the vehicle controller collects the air quality data of the air quality detection unit.

[0053] The vehicle controller is electrically connected with the pre-filter unit and the sterilization unit, and the vehicle controller controls the start and stop of the air quality detection unit, the pre-filter unit and the sterilization unit by collecting the sterilization switch signal, the door sensor signal and the air quality data.

[0054] The vehicle controller collects the sterilization switch signal, and when it is detected that the sterilization switch signal is valid (the sterilization switch is pressed), the pre-filter unit and the sterilization unit are started; when the vehicle controller detects that the sterilization switch signal is invalid (the sterilization switch is not pressed), the vehicle controller collects the door sensor signal, and when the action of one door switch is detected, the pre-filter unit and the sterilization unit are started, and when no door switch is detected, the air quality detection unit is started, and the vehicle controller collects the air quality data of the air quality detection unit, and when it is detected that the air quality is lower than or equal to the threshold value, the pre-filter unit and the sterilization unit are started. From the door opening to the door closing, it is the action of one door switch.

[0055] In this embodiment, the air sterilizer of the vehicle air purification system is switchably connected with the air inlet end of the air quality detection unit and the air inlet end of the pre-filter unit, and the air outlet end is switchably connected with the air outlet end of the air quality detection unit and the air outlet end of the sterilization unit, forming multiple air purification modes, including forced purification mode, automatic purification mode and air quality detection mode. According to different occasions, different purification signals are collected by the vehicle controller (VCU), and appropriate air purification mode is selected to disinfect and sterilize the whole vehicle. The purification signal is derived from the sterilization switch signal or the door sensor signal, and the sterilization switch signal or the door sensor signal controls different air purification modes.

[0056] The forced purification mode is that the air in the vehicle enters the pre-filter unit from the air inlet, first passes through the pre-filter unit to filter various particulate pollutants, then enters the sterilization unit to decompose bacteria and viruses, and the purified air returns to the vehicle through the outlet.

[0057] The automatic purification mode is that the air in the vehicle enters the air quality detection unit from the air inlet, then passes through the pre-filter unit to filter various particulate pollutants, then enters the sterilization unit to decompose bacteria and viruses, and the purified air returns to the vehicle through the outlet.

[0058] The detection mode is that the air in the vehicle enters the air quality detection unit from the air inlet to detect the air quality, and if the air quality is higher than the threshold value, the air returns to the vehicle from the air outlet.

[0059] The vehicle air purification system of the embodiment includes multiple air purification modes, different air purification modes are controlled through a disinfection switch signal or a vehicle door sensor signal, etc., different scene requirements can be met, the adaptability is high in multiple occasions, and the air purification efficiency is improved; when the air quality detection system fails, multiple air purification modes can be combined for air purification in the vehicle, and the air purification efficiency in the vehicle is relatively high.

[0060] The air disinfection device is provided with PM2.5 detection, temperature and humidity detection functions, etc., sends data to a display instrument through a CAN bus, and is displayed on the display instrument in real time, so as to reflect the current air quality in the vehicle compartment. The air quality data is uploaded to a cloud control system (T-box) to monitor the air disinfection and air quality in the vehicle in real time; when the cloud control system monitors that the air quality in the vehicle does not meet the standard, a remote instruction is sent to the VCU to start the air disinfection device, so as to ensure the air cleanliness in the vehicle compartment.

[0061] As shown in FIG. 1, the air disinfection system currently used in the vehicle is mainly ultraviolet light sterilization, plasma generator sterilization, or a combination of the two to purify the air in the vehicle. The plasma generator or ultraviolet light used in the scheme needs to be operated for a long time, at least more than half an hour, and improper use may harm the human body; the plasma generator used in the scheme has a certain radiation and releases ozone, which is harmful to the human body; the plasma generator and ultraviolet light need to be arranged at multiple positions according to the size of the vehicle to play an effective sterilization role in the vehicle.

[0062] The sterilization unit of the air disinfection device of the embodiment includes a light source and a photocatalyst catalytic layer, the light source is an ultraviolet light or an LED light, and the photocatalyst catalytic layer is titanium dioxide.

[0063] The vehicle air purification system of the embodiment uses photocatalyst technology, the bacteria killing rate is greater than 99.99%, the one-time sterilization rate is greater than 92%, and no ozone and radiation are generated, thereby reducing the harm to the human body and improving the safety of the vehicle environment. The air can be purified when a person is in the vehicle.

[0064] The air disinfection device is installed on the roof inside the vehicle.

[0065] Photocatalyst technology: a catalyst (such as titanium dioxide TiO2) activated by a light source is used to decompose harmful compounds. In air purification, photocatalysts can decompose organic pollutants and some inorganic substances in the air, such as bacteria, viruses, formaldehyde, benzene, etc., into harmless substances (water and carbon dioxide) under light conditions through generated free radicals (such as hydroxyl radicals and superoxide anions). The light source can be an LED or ultraviolet light, which has the characteristics of a relatively narrow wavelength range and can provide precise spectral output. In the photocatalyst activation process, the use of a narrow-band light source can optimize the photocatalyst reaction, and different photocatalyst materials have different response characteristics to the wavelength of light.

[0066] In an air purifier integrated with a light source and a photocatalyst, when air flows through the device, it first passes through a pre-filter to remove large particles such as dust and hair. Subsequently, the air passes through a region containing photocatalyst material, at which point the light source activates the photocatalyst, causing a reaction and breaking down pollutants. In this process, the wavelength of the light source is carefully selected to match the optimal activation wavelength of the photocatalyst, maximizing purification efficiency.

[0067] The air purifier mainly includes the following parts:

[0068] 1. Air inlet: usually located on the side or bottom of the device, designed with sufficient openings to ensure air inflow.

[0069] 2. Air quality detection unit: including particulate matter (PM2.5, PM10) sensors, harmful gas sensors (formaldehyde, etc.), used to detect the quality of pollutants in the air. Environmental sensors: temperature sensors, humidity sensors, providing additional environmental data to aid intelligent control.

[0070] 3. Pre-filtering unit: can be one or more filter layer combinations. The pre-filtering unit includes:

[0071] (1) HEPA filter screen: high-efficiency air filter, capable of capturing at least 99.97% of particles with a diameter of 0.3 microns.

[0072] (2) Activated carbon filter layer: adsorbs harmful gases and odors in the air.

[0073] 4. Sterilization unit: according to different sterilization technologies, this unit contains multiple components with different functions: UV lamp: emits UV-C light with high sterilization capability. Photocatalyst layer: generates chemical reactions under light to effectively decompose bacteria and viruses.

[0074] 5. Fan and motor system: responsible for drawing in and pushing air through various filtering and sterilization layers, usually designed with multiple speed settings to accommodate different air quality needs.

[0075] 6. Air outlet and purified air guiding system: purified air is released through the air outlet, which has the function of adjusting the air outlet direction to better distribute the purified air.

[0076] This embodiment can effectively improve sterilization efficiency, reduce sterilization hazards, monitor air quality, improve in-vehicle air quality, and improve passenger environmental safety.

[0077] The embodiment also provides a vehicle air purification method, as shown in FIG. 4, including: collecting a first purification signal, if the first purification signal is valid, starting a first air purification mode, i.e. sequentially passing through pre-filtering, sterilization for air purification;

[0078] If the first purification signal is invalid, the second purification signal is collected, if the second purification signal is valid, the second air purification mode is started, that is, air purification is carried out in turn through pre-filtering and sterilization; if the second purification signal is invalid, the air quality detection mode is started, if the air quality is higher than the threshold value, the air quality detection mode is continued, if the air quality is lower than or equal to the threshold value, the third air purification mode is started, that is, air purification is carried out in turn through air quality detection, pre-filtering and sterilization. The first air purification mode and the second air purification mode can be the same mode.

[0079] In this embodiment, the first purification signal is a disinfection switch signal, and the second purification signal is a vehicle door sensor signal. The first air purification mode is a forced purification mode, the second air purification mode is a forced purification mode, and the third air purification mode is an automatic purification mode.

[0080] The VCU collects the disinfection switch signal, when the disinfection switch signal is valid, the VCU detects that the disinfection switch signal is valid, controls the air disinfection device to perform a forced purification work once, stops after each work for 15 minutes, and feeds back an air purification end reminder on a display instrument. When the human body feels that the air in the vehicle is not suitable, the air purification can be carried out in time, the air purification efficiency in the vehicle and the air quality in the vehicle are improved, and the riding comfort is improved.

[0081] When the disinfection switch is invalid, the VCU collects the vehicle door sensor signal on the vehicle door, detects the opening and closing state of the vehicle door, when a vehicle door opening and closing action is detected, the VCU controls the air disinfection device to start a forced purification work, stops after each work for 15 minutes to achieve disinfection effect, and feeds back an air purification end reminder on a display instrument. When the personnel enter the vehicle, the air purification can be carried out in time, the air purification efficiency in the vehicle and the air quality in the vehicle are improved, and the riding comfort is improved.

[0082] When the disinfection switch is invalid, the VCU detects the vehicle door opening and closing state, when no vehicle door opening and closing action is detected, the VCU controls the air disinfection device to start an air quality detection mode, performs air quality detection work, if the air quality is higher than the threshold value, the air disinfection device continues the air quality detection work, if the air quality is lower than or equal to the threshold value, the air disinfection device starts an automatic purification work, stops after each work for 15 minutes to achieve disinfection effect, and feeds back an air purification end reminder on a display instrument.

[0083] The embodiment includes multiple air purification work modes, different air purification work modes are controlled through multiple purification signals, different scene requirements can be met, the adaptability is high in multiple occasions, and the air purification efficiency is improved.

[0084] The above embodiments should be understood as being used only for more clearly describing the present application, and not for limiting the scope of the present application, and after reading the present application, various equivalent modifications of the present application by those skilled in the art fall within the scope of the appended claims.

Claims

1. A vehicle air purification system, characterized by, The air sterilization device, the sterilization switch, the vehicle controller, and the door sensor for detecting the door switch state are included. The air sterilization device has an air inlet, an air quality detection unit, a pre-filtering unit, a sterilization unit, and an air outlet. The air inlet is connected to the air inlet end of the air quality detection unit and the air inlet end of the pre-filtering unit through a pipeline. The air outlet is connected to the air outlet end of the air quality detection unit and the air outlet end of the sterilization unit through a pipeline. The vehicle controller is electrically connected to the sterilization switch to collect the signal of the sterilization switch. The vehicle controller is electrically connected to the door sensor to collect the signal of the door sensor.

2. The vehicle air purification system of claim 1, wherein, The vehicle controller is electrically connected to the air quality detection unit to collect the air quality data detected by the air quality detection unit.

3. The vehicle air purification system of claim 1, wherein, The vehicle controller is electrically connected to the pre-filtering unit and the sterilization unit to control the start and stop of the air quality detection unit, the pre-filtering unit, and the sterilization unit.

4. The vehicle air purification system of claim 1, wherein, The sterilization unit has a light source and a photocatalyst layer.

5. The vehicle air purification system of claim 1, wherein, The air quality detection unit includes at least one of the following sensors: a particulate matter sensor, a temperature sensor, a humidity sensor, and a formaldehyde sensor.

6. The vehicle air purification system of claim 5, wherein, The pre-filtering unit has an air filter layer and / or an activated carbon filter layer.

7. The vehicle air purification system of claim 5, wherein, The air sterilization device has a forced purification mode, an automatic purification mode, and an air quality detection mode.

8. The vehicle air purification system of claim 5, wherein, In the forced purification mode, the air in the vehicle enters the air sterilization device from the air inlet, passes through the pre-filtering unit and the sterilization unit in sequence, and is then discharged from the air outlet. In the automatic purification mode, the air in the vehicle enters the air sterilization device from the air inlet, passes through the air quality detection unit, the pre-filtering unit, and the sterilization unit in sequence, and is then discharged from the air outlet.

9. A method of purifying air in a vehicle, characterized by, In the air quality detection mode, the air in the vehicle enters the air quality detection unit from the air inlet. If the air quality detected by the air quality detection unit is higher than a threshold value, the air in the air quality detection unit is discharged from the air outlet. If the air quality detected by the air quality detection unit is lower than or equal to the threshold value, the air in the air quality detection unit passes through the pre-filtering unit and the sterilization unit in sequence, and is then discharged from the air outlet. The first purification signal is collected. If the first purification signal is valid, the first air purification mode is started, i.e., the air in the vehicle passes through pre-filtering and sterilization in sequence for air purification. If the first purification signal is invalid, the second purification signal is collected. If the second purification signal is valid, the second air purification mode is started, i.e., the air in the vehicle passes through pre-filtering and sterilization in sequence for air purification. If the second purification signal is invalid, the air quality detection mode is started. If the air quality in the vehicle is higher than a threshold value, the air quality detection mode is continued. If the air quality in the vehicle is lower than or equal to the threshold value, the third air purification mode is started, i.e., the air in the vehicle passes through air quality detection, pre-filtering, and sterilization in sequence for air purification.

10. A method of purifying air in a vehicle, characterized by, The method comprises: collecting a first purification signal and a second purification signal; if either of the first purification signal and the second purification signal is valid, the air in the vehicle is purified by pre-filtering and sterilization in sequence; if neither of the first purification signal and the second purification signal is valid, an air quality detection mode is started, if the air quality in the vehicle is higher than a threshold value, the air quality detection mode is continued, and if the air quality in the vehicle is lower than or equal to the threshold value, the air in the vehicle is purified by air quality detection, pre-filtering and sterilization in sequence.

11. The vehicle air purification method according to claim 9 or 10, characterized by, the first purification signal is a signal of a sterilization switch; the first purification signal is valid when it is detected that the sterilization switch is pressed, and the first purification signal is invalid when it is detected that the sterilization switch is not pressed; the second purification signal is a signal of a vehicle door sensor; the second purification signal is valid when it is detected that a vehicle door switch is operated once, and the second purification signal is invalid when it is detected that the vehicle door switch is not operated.

12. The vehicle air purification method of claim 10, wherein, the step of judging the validity of the first purification signal is performed before the step of judging the validity of the second purification signal.

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