Defogging system of vehicle, vehicle and method

Abstract

The invention relates to the technical field of vehicles, in particular to a demisting system of a vehicle, the vehicle and a method, and the demisting system comprises a heating assembly used for demisting and defrosting a vehicle window; the switch assembly is arranged between the heating assembly and an engine exhaust pipe; the detection assembly is used for detecting the current temperature difference between the inner side and the outer side of the car window and the current humidity of the car window; and the control assembly is used for controlling the switch assembly to be in an open state when it is judged that the automobile window has the fogging and frosting risk according to the current temperature difference between the inner side and the outer side and the current humidity of the automobile window, engine exhaust is introduced into the heating assembly, and a windshield of the automobile window is heated through the heating assembly till a preset ending condition is met. Therefore, the windshield is heated through the energy of the exhaust gas of the engine, the problems that the demisting and defrosting time of the vehicle is too long, and the energy consumption is too large are solved, the demisting and defrosting efficiency is improved, the energy consumption is reduced, and the use experience of a user is optimized.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle defog system, a vehicle and a method. Background Art

[0002] At present, the existing vehicle front window defogger and defrost systems can be divided into two types: cabin heating defogger and defrost system and heat pump defogger and defrost system; the cabin heating type heats the seats, front windshield, exterior rearview mirrors and other areas to achieve defogger and defrost effects, and the heat pump type introduces outside air into the car, and quickly achieves defogger and defrost effects through heating, filtering, drying and other steps.

[0003] However, the cabin heating type has low heating power, takes a long time, and the heating method may affect fuel consumption. The heating effect is not good when the vehicle is just started. The heat pump type takes a certain amount of time to heat up and is more power-consuming. Long-term use will increase the vehicle's fuel consumption. This problem needs to be solved urgently. Summary of the invention

[0004] The present application provides a vehicle defogger system, a vehicle and a method to solve the problems of long vehicle defogger and defroster time and excessive energy consumption, improve the efficiency of defogger and defroster, reduce energy consumption and optimize the user experience.

[0005] A first aspect of the present application provides a vehicle defog system, comprising the following steps:

[0006] Heating components for defogging and defrosting vehicle windows;

[0007] A switch assembly disposed between the heating assembly and the engine exhaust pipe;

[0008] A detection component, used for detecting the current temperature difference between the inside and outside of the vehicle window and the current humidity of the vehicle window;

[0009] A control component is used to control the switch component to be in an open state when it is determined that the vehicle window has a risk of fogging or frosting based on the current temperature difference between the inside and outside and the current humidity of the vehicle window, and to introduce the engine exhaust into the heating component to heat the windshield of the vehicle window through the heating component until a preset end condition is met.

[0010] Optionally, the detection component includes:

[0011] A temperature difference detection component, used to detect the current temperature difference between the inside and outside of the vehicle window;

[0012] The humidity detection component is used to detect the current humidity of the vehicle window.

[0013] Optionally, the heating component comprises:

[0014] A first cavity, wherein the first cavity is connected to the engine exhaust pipe through a first pipeline;

[0015] A second cavity is arranged in the first cavity, and the second cavity heats the glass windshield of the vehicle window through a second pipeline.

[0016] Optionally, the switch assembly is a flow control valve.

[0017] Optionally, the preset end condition is that there is no risk of fogging or frosting on the vehicle windows and / or the vehicle is in an ignition-off state.

[0018] A second aspect of the present application provides a vehicle, comprising: a defog system for a vehicle as described in any one of the above items.

[0019] The third aspect of the present application provides a vehicle defog method, wherein the vehicle adopts the vehicle defog system of the first aspect of the present application. The method comprises the following steps:

[0020] Detecting a current temperature difference between the inside and outside of the vehicle window and a current humidity of the vehicle window;

[0021] When it is determined that the vehicle window is at risk of fogging or frosting based on the current temperature difference between the inside and outside and the current humidity of the vehicle window, the switch component is controlled to be in an open state, and the engine exhaust is introduced into the heating component to heat the windshield of the vehicle window through the heating component until a preset end condition is met.

[0022] Optionally, after detecting the current temperature difference between the inside and outside of the vehicle window and the current humidity of the vehicle window, the method further includes:

[0023] Determine whether the current temperature difference between the inside and outside is greater than a preset temperature difference, and whether the current humidity is greater than a preset humidity;

[0024] If the current temperature difference between the inside and outside is greater than the preset temperature difference, and the current humidity is greater than the preset humidity, it is determined that the vehicle window has the risk of fogging and frosting.

[0025] Optionally, after determining that the preset end condition is met, the method further includes:

[0026] Control the switch component to be in a closed state.

[0027] Optionally, the preset end condition is that there is no risk of fogging or frosting on the vehicle windows and / or the vehicle is in an ignition-off state.

[0028] Therefore, the vehicle's defog system determines that there is a risk of fogging and frosting based on the temperature difference and humidity between the inside and outside of the window detected by the detection component. The control component controls the switch component to be in the open state, and the heating component introduces the engine exhaust to heat the windshield to defog and defrost until the preset end condition is met, and the heating component stops heating. Therefore, the windshield is heated by the engine exhaust energy, which solves the problems of long defog and defrost time and excessive energy consumption of the vehicle, improves the efficiency of defog and defrost, reduces energy consumption, and optimizes the user experience.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0031] Figure 1 A block diagram of a vehicle defog system provided according to an embodiment of the present application;

[0032] Figure 2 A schematic diagram of the structure of a vehicle defog system provided according to an embodiment of the present application;

[0033] Figure 3 A flow chart of a vehicle defogging method provided according to an embodiment of the present application;

[0034] Figure 4 The present invention is a flow chart of a vehicle defog method provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0036] The following describes the defog system, vehicle and method of the vehicle of the embodiment of the present application with reference to the accompanying drawings. In view of the problem of long defog and defrosting time and excessive energy consumption of the vehicle mentioned in the above background technology, the present application provides a defog system, vehicle and method of the vehicle, in which the heating component defogs and defrosts the vehicle window; the switch component is arranged between the heating component and the engine exhaust pipe; the detection component detects the current temperature difference between the inside and outside of the vehicle window and the current humidity of the vehicle window; when the control component determines that there is a risk of fogging and frosting of the vehicle window according to the current temperature difference between the inside and outside and the current humidity of the vehicle window, the control switch component is in the open state, and the engine exhaust is introduced into the heating component to heat the windshield of the vehicle window through the heating component until the preset end condition is met. Thus, the windshield is heated by the energy of the engine exhaust gas, which solves the problems of long defog and defrosting time and excessive energy consumption of the vehicle, improves the efficiency of defog and defrosting, reduces energy consumption, and optimizes the user experience.

[0037] Specifically, Figure 1 A schematic diagram of a vehicle defog system provided in an embodiment of the present application.

[0038] like Figure 1 As shown, the defog system 10 of the vehicle includes: a heating component 100 , a switch component 200 , a detection component 300 and a control component 400 .

[0039] Among them, the heating component 100 is used to defog and defrost the vehicle windows; the switch component 200 is arranged between the heating component 100 and the engine exhaust pipe; the detection component 300 is used to detect the current temperature difference between the inside and outside of the vehicle window and the current humidity of the vehicle window; the control component 400 is used to control the switch component 200 to be in the open state when it is determined that there is a risk of fogging and frosting on the vehicle window based on the current temperature difference between the inside and outside and the current humidity of the vehicle window, and to introduce the engine exhaust into the heating component 100 to heat the windshield of the vehicle window through the heating component 100 until the preset end condition is met.

[0040] The current inside-outside temperature difference may be the temperature difference between the inside and outside of the window; the current humidity may be the humidity near the window, usually the humidity inside the window. The preset end condition is that when a specific condition is met, the system will automatically stop the heating process, thereby ending the defogger and defrost. For example, the preset end condition is that there is no risk of fogging or frosting on the window and / or the vehicle is in an off state; the preset temperature difference and the preset humidity may be thresholds pre-set by the user, may be thresholds obtained through a limited number of experiments, or may be thresholds obtained through a limited number of computer simulations, and are not specifically limited here.

[0041] Specifically, the embodiment of the present application can detect the current temperature difference between the inside and outside of the vehicle window and the current humidity of the vehicle window through the detection component 300. After the user starts the engine, the detection component 300 feeds back the current temperature difference between the inside and outside of the vehicle window and the current humidity of the vehicle window to the control component 400. The control component 400 receives the current temperature difference between the inside and outside from the temperature difference detection component 500 and the current humidity from the humidity detection component 600, and determines whether there is a risk of fogging and frosting according to the preset temperature difference and the preset humidity; if the current temperature difference between the inside and outside is greater than the preset temperature difference, and the current humidity is greater than the preset humidity, it is determined that there is a risk of fogging and frosting, and the control component 400 commands the switch component 200 to open, so that the engine exhaust enters the first cavity 101 of the heating component 100 through the first pipeline, and the engine exhaust gas in the first cavity 101 of the heating component 100 heats the air in the second cavity 102, and the heated air is transported to the windshield through the second pipeline for heating. When the system determines that the preset end condition is met, the control component 400 commands the switch component 200 to close and stop the heating process.

[0042] It can be understood that the preset end conditions are met when there is no risk of fogging or frosting on the windows, which means that the temperature difference between the inside and outside of the windows is reduced to a certain level, that is, the current temperature difference between the inside and outside is less than or equal to the preset temperature difference, and the humidity near the windows is reduced to a certain level, that is, the current humidity is less than or equal to the preset humidity, and there is no possibility of fogging or frosting; the preset end conditions are met when the vehicle is in the off state, even if there may still be a risk of fogging or frosting on the windows, regardless of the condition of the windows, once the vehicle is turned off, the system will automatically stop the heating process.

[0043] For example, assuming that the preset temperature difference is 5°C and the preset humidity is 80% RH (relative humidity), when the embodiment of the present application detects that the current temperature difference between the inside and the outside is 15°C and the current humidity is 85% RH, since the current temperature difference between the inside and the outside of 15°C is greater than the preset temperature difference of 5°C, and the current humidity of 85% RH is greater than the preset humidity of 80% RH, the system determines that there is a risk of fogging and frost.

[0044] It should be noted that the main function of the switch assembly 200 is to establish or cut off the connection between the heating assembly 100 and the engine exhaust pipe to control whether the engine exhaust flows into the heating assembly 100, thereby achieving defogger and defrost of the windshield; the switch assembly 200 can be a flow control valve, and the main responsibility of the flow control valve is to open according to the instruction of the control assembly 400 when it detects that there is a risk of fogging and frosting on the window, allowing the engine exhaust to enter the heat exchanger through the first pipeline, and to close according to the instruction of the control assembly 400 when it detects that the preset end condition is met, so as to prevent the engine exhaust from continuing to flow into the heat exchanger. The flow control valve can quickly respond to the instruction of the control unit, quickly open or close, thereby achieving rapid defogger and defrost; by accurately controlling the flow of the engine exhaust, the defogger and defrost effect is ensured while avoiding unnecessary energy waste.

[0045] In order to facilitate those skilled in the art to further understand the vehicle defog system 10 according to the embodiment of the present application, the heating component 100 and the detection component 300 are described in detail below in conjunction with specific embodiments.

[0046] Optionally, in some embodiments, the heating assembly 100 includes: a first cavity 101 and a second cavity 102. The first cavity 101 is connected to the engine exhaust pipe through a first pipeline; the second cavity 102 is disposed in the first cavity 101, and the second cavity 102 heats the glass windshield of the vehicle window through the second pipeline.

[0047] It can be understood that if there is a risk of fogging and frosting, the control component 400 commands the switch component 200 to open, introducing the engine exhaust into the first cavity 101 of the heating component 100; the engine exhaust heats the air in the second cavity 102 in the first cavity 101, and the heated air heats the windshield through the second pipeline.

[0048] Optionally, in some embodiments, the detection component 300 includes: a temperature difference detection component 500 and a humidity detection component 600. The temperature difference detection component 500 is used to detect the current temperature difference between the inside and outside of the vehicle window; the humidity detection component 600 is used to detect the current humidity of the vehicle window.

[0049] It is understandable that after the vehicle is started, the detection component 300 begins to work, monitoring the temperature difference and humidity between the inside and outside of the vehicle in real time to help determine whether there is a risk of fogging and frosting on the windows, effectively preventing and eliminating fog and frost on the windows, and improving driving safety and comfort.

[0050] Specifically, the temperature difference detection component 500 can use a temperature difference sensor. The temperature difference detection component 500 is usually installed near the vehicle window. It can measure the temperature of the air inside and outside the vehicle and calculate the difference between the two. When the temperature difference between the inside and outside of the vehicle is large, fog or frost is easily formed on the window; two temperature sensors can also be used as detection devices of the temperature difference detection component 500, which are installed on the inside and outside of the vehicle window respectively to detect the temperature inside and outside the window; the signal processing module is responsible for processing the signal from the temperature sensor and converting it into a data format that can be read by the control system; the temperature difference detection component 500 sends the detected temperature difference data to the control component 400 through some form of data transmission interface (such as CAN bus or other vehicle network protocol). The humidity detection component 600 can use a humidity sensor. The humidity detection component 600 is used to detect the current humidity of the vehicle window. High humidity is also an important factor causing the vehicle window to fog up. The humidity detection component 600 is usually installed near the vehicle window. It can measure the air humidity near the vehicle window. It is mainly composed of the following parts: the humidity sensor measures the air humidity inside and outside the vehicle window. The humidity sensor can be a resistive, capacitive or other type of humidity sensor. They can convert changes in humidity into electrical signals and need to be selected based on characteristics such as the vehicle model. No specific restrictions are made here; the signal conditioning circuit is used to convert the electrical signal output by the humidity sensor into a form suitable for further processing, such as a voltage or current signal, and perform necessary amplification, filtering and other processing; the humidity detection component 600 sends the detected humidity data to the control unit through some form of data transmission interface.

[0051] It should be noted that when the vehicle is started, the temperature difference sensor in the temperature difference detection component 500 starts working, continuously monitoring the temperature changes inside and outside the window, and the temperature difference sensor converts the detected temperature signal into an electrical signal, and processes it through the signal processing module; the processed data is sent to the control component 400 through the data transmission interface. The temperature difference sensor and the humidity sensor need to have good stability and accuracy to ensure accurate detection of humidity, the signal conditioning circuit needs to be able to effectively process the signal from the humidity sensor, and perform appropriate filtering to remove noise interference, and the data transmission interface needs to ensure the real-time and accuracy of the data.

[0052] The vehicle defogger method is described in detail below in conjunction with the structure of the vehicle defogger system according to an embodiment of the present application.

[0053] Specifically, Figure 2 As shown, Figure 2 It is a schematic structural diagram of a vehicle defog system according to a specific embodiment of the present application.

[0054] Specifically, the defog system 10 of the vehicle of the present application mainly includes a temperature difference sensor, a humidity sensor, a control component 400, an engine exhaust pipe, a flow control valve, a pipeline 1 (engine exhaust pipe-heat exchanger), a heat exchanger (inner cavity, outer cavity), and a pipeline 2 (heat exchanger-windshield). The user enters the cab and starts the engine. At this time, the temperature difference sensor and the humidity sensor feed back the detection results to the control unit, and the control unit judges the detection results. If there is a risk of fogging and frosting, an instruction is issued to the flow valve on the pipeline 1 (engine exhaust pipe-heat exchanger) to introduce the engine exhaust into the outer cavity of the heat exchanger, heat the air in the inner cavity, and the heated air is heated through the pipeline 2 to heat the windshield until the system judges that the risk of fogging and frosting is eliminated or the vehicle is turned off.

[0055] Furthermore, if Figure 3 As shown, Figure 3 The present invention is a flow chart of a vehicle defog method according to an embodiment of the present application.

[0056] The vehicle defogging method comprises the following steps:

[0057] S301: The vehicle's defog system detects the temperature difference and humidity between the inside and outside of the vehicle.

[0058] S302: Based on the detection results of temperature difference and humidity, the system determines whether there is a risk of fogging or frost. If yes, step S303 is executed; otherwise, the system jumps to step S306.

[0059] S303: When there is a risk of fogging or frosting, the system commands the flow control valve to open, allowing the engine exhaust to enter the first cavity of the heating component.

[0060] S304: In the first cavity, the engine exhaust gas exchanges heat with the air in the second cavity to heat the air in the second cavity.

[0061] S305: The heated air is delivered to the windshield through the second pipeline to heat the windshield.

[0062] S306: The flow control valve remains closed.

[0063] According to the vehicle defog system proposed in the embodiment of the present application, based on the temperature difference and humidity between the inside and outside of the window detected by the detection component, it is determined that there is a risk of fogging and frosting. The control component controls the switch component to be in the on state, and the heating component introduces the engine exhaust gas to heat the windshield to defog and defrost until the preset end condition is met, and the heating component stops heating. In this way, the windshield is heated by the energy of the engine exhaust gas, which solves the problems of long defog and defrost time and excessive energy consumption of the vehicle, improves the efficiency of defog and defrost, reduces energy consumption, and optimizes the user experience.

[0064] Specifically, Figure 4 A flow chart of a vehicle defogging method provided in an embodiment of the present application, wherein the vehicle adopts Figure 1 The embodiment shows a defog system for a vehicle.

[0065] like Figure 4 As shown, the defogging method for the vehicle comprises the following steps:

[0066] In step S401, the current temperature difference between the inside and outside of the vehicle window and the current humidity of the vehicle window are detected.

[0067] In step S402, when it is determined that there is a risk of fogging or frosting on the vehicle window based on the current temperature difference between the inside and outside and the current humidity of the vehicle window, the control switch component is in an on state, and the engine exhaust is introduced into the heating component to heat the windshield of the vehicle window through the heating component until the preset end condition is met.

[0068] Optionally, after detecting the current temperature difference between the inside and outside of the vehicle window and the current humidity of the vehicle window, it also includes: judging whether the current temperature difference between the inside and outside is greater than the preset temperature difference, and whether the current humidity is greater than the preset humidity; if the current temperature difference between the inside and outside is greater than the preset temperature difference, and the current humidity is greater than the preset humidity, it is determined that there is a risk of fogging and frosting on the vehicle window.

[0069] Optionally, after determining that a preset end condition is met, the method further includes: controlling the switch component to be in a closed state.

[0070] Optionally, the preset termination condition is that there is no risk of fogging or frosting on the vehicle windows and / or the vehicle is in the off state.

[0071] It should be noted that the aforementioned explanation of the embodiment of the vehicle defog system is also applicable to the vehicle defog method of this embodiment, which will not be repeated here.

[0072] According to the vehicle defogger method proposed in the embodiment of the present application, based on the temperature difference and humidity between the inside and outside of the window detected by the detection component, it is determined that there is a risk of fogging and frosting. The control component controls the switch component to be in the on state, and the heating component introduces the engine exhaust gas to heat the windshield to defog and defrost until the preset end condition is met, and the heating component stops heating. Thus, the windshield is heated by the engine exhaust gas energy, which solves the problems of long defogger and defrost time and excessive energy consumption of the vehicle, improves the efficiency of defogger and defrost, reduces energy consumption, and optimizes the user experience.

[0073] In addition, an embodiment of the present application further provides a vehicle, the vehicle comprising Figure 1 The embodiment shows a defog system for a vehicle.

[0074] According to the vehicle proposed in the embodiment of the present application, the defogger system of the vehicle solves the problems of long defogger and defrost time and excessive energy consumption, thereby improving the efficiency of defogger and defrost, reducing energy consumption, and optimizing the user experience.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0076] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0077] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0078] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0079] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

Claims

1. A vehicle defog system, characterized in that: include: Heating components for defogging and defrosting vehicle windows; A switch assembly disposed between the heating assembly and the engine exhaust pipe; A detection component, used for detecting the current temperature difference between the inside and outside of the vehicle window and the current humidity of the vehicle window; A control component is used to control the switch component to be in an open state when it is determined that the vehicle window has a risk of fogging or frosting based on the current temperature difference between the inside and outside and the current humidity of the vehicle window, and to introduce the engine exhaust into the heating component to heat the windshield of the vehicle window through the heating component until a preset end condition is met.

2. The vehicle defog system according to claim 1, characterized in that: The detection component comprises: A temperature difference detection component, used to detect the current temperature difference between the inside and outside of the vehicle window; The humidity detection component is used to detect the current humidity of the vehicle window.

3. The vehicle defog system according to claim 1, characterized in that: The heating component comprises: A first cavity, wherein the first cavity is connected to the engine exhaust pipe through a first pipeline; A second cavity is arranged in the first cavity, and the second cavity heats the glass windshield of the vehicle window through a second pipeline.

4. The vehicle defog system according to claim 1, characterized in that: The switch component is a flow control valve.

5. The vehicle defog system according to claim 1, characterized in that: The preset end condition is that there is no risk of fogging or frosting on the vehicle windows and / or the vehicle is in an ignition-off state.

6. A vehicle, characterized in that: include: A defog system for a vehicle as claimed in any one of claims 1 to 5.

7. A vehicle defogging method, characterized in that: The vehicle adopts the defog system of the vehicle according to any one of claims 1 to 5, wherein the method comprises the following steps: Detecting a current temperature difference between the inside and outside of the vehicle window and a current humidity of the vehicle window; When it is determined that the vehicle window is at risk of fogging or frosting based on the current temperature difference between the inside and outside and the current humidity of the vehicle window, the switch component is controlled to be in an open state, and the engine exhaust is introduced into the heating component to heat the windshield of the vehicle window through the heating component until a preset end condition is met.

8. The vehicle defogging method according to claim 7, characterized in that: After detecting the current temperature difference between the inside and outside of the vehicle window and the current humidity of the vehicle window, the method further includes: Determine whether the current temperature difference between the inside and outside is greater than a preset temperature difference, and whether the current humidity is greater than a preset humidity; If the current temperature difference between the inside and outside is greater than the preset temperature difference, and the current humidity is greater than the preset humidity, it is determined that the vehicle window has the risk of fogging and frosting.

9. The vehicle defogging method according to claim 7, characterized in that: After determining that the preset end condition is met, the method further includes: Control the switch component to be in a closed state.

10. The vehicle defogging method according to claim 7, characterized in that: The preset end condition is that there is no risk of fogging or frosting on the vehicle windows and / or the vehicle is in an ignition-off state.

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