Ventilation control method, and vehicle

Abstract

A ventilation control method, and a vehicle. The ventilation control method is applied to a vehicle. The vehicle comprises a thermal management system (10); the thermal management system (10) comprises a refrigerant loop (11), and a first air duct (12) and a second air duct (13) which are spaced apart from each other. The refrigerant loop (11) comprises an evaporator (14) and a condenser (15) which are connected to each other; the evaporator (14) is provided in the first air duct (12); the condenser (15) is provided in the second air duct (13). A first damper (20) is rotatably provided in the first air duct (12). The ventilation control method comprises: in a ventilation mode of a vehicle, acquiring an environment state of an outdoor space; and controlling a first damper at least on the basis of the environment state of the outdoor space, so as to enable an air inlet side of an evaporator to be communicated with at least one of the outdoor space and an indoor space.

Description

Ventilation control method and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202310715825.0, filed on June 15, 2023, the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to, but is not limited to, the field of vehicle technology, and in particular to a ventilation control method and a vehicle. Background Art

[0004] With the gradual development of technology, new energy vehicles are gradually entering people's horizons. New energy vehicles are vehicles that use unconventional automotive fuels as a power source. New energy vehicles often have a ventilation mode that provides fresh air to the cabin.

[0005] Summary of the Invention

[0006] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0007] The present application provides a ventilation control method and a vehicle.

[0008] On the one hand, the present application provides a ventilation control method, which is applied to a vehicle, the vehicle includes a thermal management system, the thermal management system includes a refrigerant circuit and a first air duct and a second air duct arranged separately; the refrigerant circuit includes an evaporator and a condenser connected to each other, the evaporator is arranged in the first air duct, and the condenser is arranged in the second air duct; a first damper is rotatably provided in the first air duct; the ventilation control method includes: in the ventilation mode of the vehicle, obtaining the environmental state of the outdoor space; controlling the first damper at least according to the environmental state of the outdoor space, so that the air inlet side of the evaporator is connected to at least one of the outdoor space and the indoor space.

[0009] Optionally, obtaining the environmental state of the outdoor space includes: obtaining the air quality level of the outdoor space; controlling the first damper at least according to the environmental state of the outdoor space includes: in response to the air quality level of the outdoor space being lower than or equal to level two, controlling the first damper so that the air inlet side of the evaporator is connected to at least the outdoor space; in response to the air quality level of the outdoor space being higher than level two, controlling the first damper so that the air inlet side of the evaporator is connected to the indoor space.

[0010] Optionally, obtaining the environmental state of the outdoor space includes: obtaining the temperature of the outdoor space; the ventilation control method also includes: obtaining the temperature of the indoor space; controlling the first damper at least according to the environmental state of the outdoor space includes: in response to the temperature difference between the temperature of the indoor space and the temperature of the outdoor space being less than or equal to a first set temperature, controlling the first damper so that the air inlet area between the air inlet side of the evaporator and the outdoor space is larger than the air inlet area between the air inlet side of the evaporator and the indoor space; in response to the temperature difference between the temperature of the indoor space and the temperature of the outdoor space being greater than the first set temperature, controlling the first damper so that the air inlet area between the air inlet side of the evaporator and the outdoor space is smaller than the air inlet area between the air inlet side of the evaporator and the indoor space.

[0011] Optionally, in response to the temperature difference between the temperature of the indoor space and the temperature of the outdoor space being less than or equal to a first set temperature, controlling the first damper so that the air inlet area between the air inlet side of the evaporator and the outdoor space is larger than the air inlet area between the air inlet side of the evaporator and the indoor space, including: in response to the temperature difference between the temperature of the indoor space and the temperature of the outdoor space decreasing, controlling the first damper so that the air inlet area between the air inlet side of the evaporator and the outdoor space is increased; in response to the temperature difference between the temperature of the indoor space and the temperature of the outdoor space increasing, controlling the first damper so that the air inlet area between the air inlet side of the evaporator and the outdoor space is reduced.

[0012] Optionally, in response to the temperature difference between the temperature of the indoor space and the temperature of the outdoor space being greater than the first set temperature, controlling the first damper so that the air inlet area between the air inlet side of the evaporator and the outdoor space is smaller than the air inlet area between the air inlet side of the evaporator and the indoor space, including: in response to the temperature difference between the temperature of the indoor space and the temperature of the outdoor space decreasing, controlling the first damper so that the air inlet area between the air inlet side of the evaporator and the indoor space is reduced; in response to the temperature difference between the temperature of the indoor space and the temperature of the outdoor space increasing, controlling the first damper so that the air inlet area between the air inlet side of the evaporator and the indoor space is increased.

[0013] Optionally, the ventilation control method further includes: obtaining the air quality of the indoor space; obtaining the environmental state of the outdoor space includes: determining the air quality of the outdoor space based on the air quality of the indoor space; if the current air quality level of the indoor space is higher than the air quality level of the indoor space at the previous moment, it means that the air quality level of the outdoor space is higher than level two.

[0014] Optionally, the thermal management system includes a second damper arranged between the first air duct and the second air duct; obtaining the environmental state of the outdoor space includes: obtaining the temperature and air quality level of the outdoor space; controlling the first damper at least according to the environmental state of the outdoor space includes: in response to the temperature of the outdoor space being lower than the second set temperature and the air quality level of the outdoor space being higher than level two, controlling the first damper to connect the air inlet side of the evaporator with the indoor space, and controlling the second damper to switch to an open state to connect the first air duct with the second air duct.

[0015] Optionally, the thermal management system includes a first fan and a second fan, the first fan is arranged in the first air duct and is configured to supply air to the evaporator, and the second fan is arranged in the second air duct and is configured to supply air to the condenser; the ventilation control method also includes: obtaining the air quality of the indoor space; and controlling the rotation speed of the first fan and the rotation speed of the second fan according to the air quality of the indoor space.

[0016] Optionally, the ventilation control method further includes: acquiring the air quality of the indoor space in response to an instruction to start the ventilation mode; and determining whether to start the ventilation mode according to the air quality of the indoor space.

[0017] Optionally, determining whether to turn on the ventilation mode based on the air quality of the indoor space includes: in response to the current air quality level of the indoor space being higher than level two, controlling the thermal management system to switch to the ventilation mode; in response to the current air quality level of the indoor space being lower than or equal to level two, generating a prompt signal indicating that the current air quality of the indoor space is excellent and not turning on the ventilation mode.

[0018] On the other hand, the present application provides a vehicle, including a thermal management system and a controller, wherein the controller is connected to the thermal management system and is configured to execute the ventilation control method as described in any of the above embodiments.

[0019] The ventilation control method provided in this application can detect the environmental conditions of the outdoor space and control the first damper based on the environmental conditions of the outdoor space. Thus, when the environmental conditions of the outdoor space are poor, the first damper can be controlled to connect the air inlet side of the evaporator to the indoor space instead of the outdoor space, achieving internal air circulation, preventing the inhalation of poor-quality outdoor air into the indoor space, and improving the comfort of the indoor space.

[0020] It should be understood that the above general description and the following detailed description are only exemplary and explanatory and are not limiting of the present application. Other aspects will become apparent upon reading and understanding the accompanying drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0022] FIG1 is a schematic diagram of a thermal management system according to an exemplary embodiment of the present application.

[0023] FIG2 is a flow chart showing a ventilation control method according to an exemplary embodiment of the present application.

[0024] FIG3 is another flow chart showing a ventilation control method according to an exemplary embodiment of the present application.

[0025] FIG4 is another flow chart showing a ventilation control method according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0026] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0027] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the ordinary meaning understood by a person of ordinary skill in the art to which this application belongs. The terms "first," "second," and similar words used in this specification and claims do not indicate any order, quantity, or importance, but are simply used to distinguish different components. Similarly, terms such as "a" or "an" do not indicate a quantitative limitation, but rather indicate the presence of at least one. "Multiple" or "several" means two or more. Unless otherwise indicated, terms such as "front," "rear," "lower," and / or "upper," "top," and "bottom" are used for ease of description only and are not limited to a single position or spatial orientation. Terms such as "include" or "comprises" mean that the elements or objects listed before "include" or "comprises" include the elements or objects listed after "include" or "comprises," and their equivalents, and do not exclude other elements or objects. The words “connected” or “connected” and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0028] As used in this application and the appended claims, the singular forms "a," "an," "said," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0029] The thermal management systems of some new energy vehicles typically use a blower to draw outdoor air into the interior and exhaust it to achieve ventilation mode. However, when ventilation mode is activated when outdoor air quality is poor, this poor-quality air will still be drawn into the interior, deteriorating the indoor air quality and reducing comfort.

[0030] In view of this, the present application provides a ventilation control method and a vehicle. The vehicle may be a new energy vehicle. The vehicle includes a thermal management system and a controller, the controller being connected to the thermal management system for executing the ventilation control method.

[0031] The ventilation control method and vehicle of the present application are described in detail below with reference to the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0032] As shown in Figure 1, the thermal management system 10 includes a refrigerant circuit 11 and a first air duct 12 and a second air duct 13, which are separated. The refrigerant circuit 11 includes an evaporator 14 and a condenser 15, which are connected to each other. The evaporator 14 can be used for cooling, and the condenser 15 can be used for heating. The evaporator 14 is arranged in the first air duct 12, and the condenser 15 is arranged in the second air duct 13, so that the evaporator 14 and the condenser 15 can be separated. The refrigerant circuit 11 may include a compressor 16 and a throttling device 17. The compressor 16 includes an air inlet 18 and an air outlet 19. The throttling device 17 is connected to one end of the evaporator 14, the other end of the evaporator 14 is connected to the air inlet 18, the air outlet 19 is connected to one end of the condenser 15, and the other end of the condenser 15 is connected to the throttling device 17. The throttling device 17 may be a solenoid valve, an expansion valve, a capillary tube, etc. In this embodiment, the throttling device 17 is a solenoid valve. The controller can control the opening and closing of the solenoid valve to connect and disconnect the refrigerant circuit 11. When the solenoid valve is open, refrigerant can flow through the refrigerant circuit 11, passing through the evaporator 14, the compressor 16, the condenser 15, and the throttling device 17. The thermal management system 10 includes a first damper 20. The first damper 20 is rotatably disposed within the first air duct 12. The first damper 20 can be rotated to connect the air inlet side of the evaporator 14 located within the first air duct 12 to at least one of the outdoor space 21 and the indoor space 22.

[0033] When the thermal management system 10 is applied to a new energy vehicle, the outdoor space 21 may refer to the exterior space of the new energy vehicle, and the indoor space 22 may refer to the interior space of the new energy vehicle, such as the driver's cab. In other embodiments, the thermal management system 10 may also be applied to buildings, such as homes, offices, and shopping malls, without limitation in this application.

[0034] In some embodiments, the thermal management system 10 includes a first fan 29 and a second fan 30. The first fan 29 and the second fan 30 may be blowers. The first fan 29 is disposed within the first air duct 12 and is used to supply air to the evaporator 14. It can deliver air from the outdoor space 21 and the indoor space 22 to the air inlet side of the evaporator 14. The second fan 30 is disposed within the second air duct 13 and is used to supply air to the condenser 15. It can deliver air from the outdoor space 21 to the air inlet side of the condenser 15.

[0035] In some embodiments, the thermal management system 10 includes a second damper 23 disposed between the first air duct 12 and the second air duct 13. The second damper 23 is disposed between the first air duct 12 and the second air duct 13 in an openable and closable manner (e.g., rotatable). When the second damper 23 is in a first position, the first air duct 12 and the second air duct 13 are connected; when the second damper 23 is in a second position, the first air duct 12 and the second air duct 13 are disconnected.

[0036] In some embodiments, the air outlet side of the evaporator 14 is in communication with at most one of the outdoor space 21 and the indoor space 22. The air outlet side of the evaporator 14 may be in communication with the outdoor space 21, the indoor space 22, or neither of the outdoor space 21 and the indoor space 22. Optionally, the thermal management system 10 includes a third damper 24 and a fourth damper 25. The third damper 24 is openably disposed between the first air duct 12 and the outdoor space 21. When the third damper 24 is open, the air outlet side of the evaporator 14 is in communication with the outdoor space 21. The fourth damper 25 is openably disposed between the first air duct 12 and the indoor space 22. When the fourth damper 25 is open, the air outlet side of the evaporator 14 is in communication with the indoor space 22. The air outlet side of the condenser 15 is in communication with at most one of the outdoor space 21 and the indoor space 22. The air outlet side of the condenser 15 can be in communication with the outdoor space 21, the indoor space 22, or neither. Optionally, the thermal management system 10 further includes a fifth damper 26 and a sixth damper 27. The fifth damper 26 is openably disposed between the second air duct 13 and the outdoor space 21. When the fifth damper 26 is open, the air outlet side of the condenser 15 is in communication with the outdoor space 21. The sixth damper 27 is openably disposed between the second air duct 13 and the indoor space 22. When the sixth damper 27 is open, the air outlet side of the condenser 15 is in communication with the indoor space 22.

[0037] In some embodiments, the thermal management system 10 includes an air quality sensor 28. The air quality sensor 28 may include a PM2.5 (2.5-micrometer Particulate Matter) sensor, an AQS (Air Quality System), or the like. The air quality sensor 28 may be located only in the indoor space 22 to detect the air quality of the indoor space 22. The air quality sensor 28 may be located only in the outdoor space 21 to detect the air quality of the outdoor space 21. The air quality sensor 28 may also be located in both the outdoor space 21 and the indoor space 22 to detect the air quality of both the outdoor space 21 and the indoor space 22.

[0038] 1 and 2 , the present application provides a ventilation control method for a vehicle. The ventilation control method includes steps S101 and S102 .

[0039] In step S101, in the ventilation mode of the vehicle, an environmental state of the outdoor space 21 is obtained. The environmental state includes at least one of temperature, air quality, and humidity. Obtaining the environmental state of the outdoor space 21 may include obtaining at least one of the temperature of the outdoor space 21, the air quality of the outdoor space 21, and the humidity of the outdoor space 21.

[0040] In step S102, the first damper 20 is controlled based on at least the environmental conditions of the outdoor space 21 to connect the air inlet side of the evaporator 14 to at least one of the outdoor space 21 and the indoor space 22. The first damper 20 can be controlled to rotate to connect the air inlet side of the evaporator 14 to the outdoor space 21. Alternatively, the first damper 20 can be controlled to rotate to connect the air inlet side of the evaporator 14 to the indoor space 22. Alternatively, the first damper 20 can be controlled to rotate to connect the air inlet side of the evaporator 14 to both the outdoor space 21 and the indoor space 22. The first damper 20 can be controlled based on the environmental conditions of the outdoor space 21. In this way, if the environmental conditions of the outdoor space 21 are poor, the first damper 20 can be controlled to connect the air inlet side of the evaporator 14 to the indoor space 22 instead of the outdoor space 21. This allows for internal air circulation, prevents poor-quality outdoor air from being drawn into the indoor space 22, and improves the comfort of the indoor space 22. Alternatively, when the ambient conditions of the outdoor space 21 are good, the first damper 20 may be controlled to connect the air inlet side of the evaporator 14 to the outdoor space 21. In this case, the air inlet side of the condenser 15 may be connected to the outdoor space 21. In other words, both the air inlet side of the evaporator 14 and the air inlet side of the condenser 15 are connected to the outdoor space 21, thereby increasing the air intake and enabling faster ventilation.

[0041] In some embodiments, obtaining the environmental state of the outdoor space 21 includes obtaining the air quality of the outdoor space 21. The air quality level of the outdoor space 21 can be obtained using an air quality sensor 28 disposed in the indoor space 22 or an air quality sensor disposed in the outdoor space 21. The air quality sensor 28 can detect the content of at least one of inhalable particulate matter, fine particulate matter, sulfur dioxide, nitrogen dioxide, and carbon monoxide in the air. Controlling the first damper 20 based on at least the environmental state of the outdoor space 21 includes: if the air quality level of the outdoor space 21 is level 1 or level 2, controlling the first damper 20 to connect the air inlet side of the evaporator 14 to at least the outdoor space 21. The air quality level is divided according to the Air Quality Index (AQI), which is generally divided into six levels: Level 1 (Excellent), AQI between 0 and 50; Level 2 (Good), AQI between 51 and 100; Level 3 (Lightly polluted), AQI between 101 and 150; Level 4 (Moderately polluted), AQI between 151 and 200; Level 5 (Severely polluted), AQI between 201 and 300; and Level 6 (Severely polluted), AQI greater than 300. If the air quality level of the outdoor space 21 is Level 1 or Level 2, it means that the air quality of the outdoor space 21 is good. If the air quality level of the outdoor space 21 is Level 1 or Level 2, the first damper 20 can be controlled to rotate so that the air inlet side of the evaporator 14 is connected to the outdoor space 21, or the first damper 20 can be controlled to rotate so that the air inlet side of the evaporator 14 is connected to both the outdoor space 21 and the indoor space 22. In this way, when the air quality of the outdoor space 21 is good, the air in the indoor space 22 can be fully exchanged with the air in the outdoor space 21, and the ventilation effect is better, thereby improving the air quality of the indoor space 22.

[0042] If the air quality level of the outdoor space 21 is not level 1 or 2, the first damper 20 is controlled to connect the air inlet side of the evaporator 14 to the indoor space 22. The fact that the air quality level of the outdoor space 21 is not level 1 or 2 indicates that the air quality level of the outdoor space 21 is either level 3, 4, 5, or 6, indicating that the air quality of the outdoor space 21 is relatively poor. If the air quality level of the outdoor space 21 is not level 1 or 2, the first damper 20 is controlled to rotate to connect the air inlet side of the evaporator 14 to the indoor space 22. This allows for internal air circulation even when the outdoor space 21's environmental conditions are poor.

[0043] In some embodiments, the ventilation control method further includes: obtaining the temperature of the indoor space 22. The temperature of the indoor space 22 can be obtained using an indoor temperature sensor. Obtaining the environmental state of the outdoor space 21 includes: obtaining the temperature of the outdoor space 21. The temperature of the outdoor space 21 can be obtained using an outdoor temperature sensor. The temperature of the indoor space 22 can be obtained first, and then the temperature of the outdoor space 21. Alternatively, the temperature of the outdoor space 21 can be obtained first, and then the temperature of the indoor space 22. This is not limited in this application.

[0044] Controlling the first damper 20 based at least on the ambient conditions of the outdoor space 21 includes controlling the first damper 20 based on the temperatures of the indoor space 22 and the outdoor space 21. If the temperature difference between the indoor space 22 and the outdoor space 21 is less than or equal to a first set temperature, controlling the first damper 20 so that the air intake area between the air intake side of the evaporator 14 and the outdoor space 21 is larger than the air intake area between the air intake side of the evaporator 14 and the indoor space 22. The temperature difference may refer to the difference between the higher temperature of the indoor space 22 and the lower temperature of the outdoor space 21. If the temperature difference is less than or equal to the first set temperature, indicating that the temperature difference between the indoor space 22 and the outdoor space 21 is small, controlling the first damper 20 so that the air intake volume into the first air duct 12 for the outdoor space 21 is greater than the air intake volume into the indoor space 22. This increases the air intake volume into the outdoor space 21, resulting in better ventilation.

[0045] If the temperature difference between the indoor space 22 and the outdoor space 21 is greater than a first set temperature, the first damper 20 is controlled to reduce the air intake area between the evaporator 14 and the outdoor space 21 to a smaller area than the intake area between the evaporator 14 and the indoor space 22. If the temperature difference is greater than the first set temperature, indicating a significant difference between the indoor space 22 and the outdoor space 21, and the outdoor space 21 may be too cold or too hot, the first damper 20 is controlled to increase the air intake volume into the first air duct 12 to a greater volume than that into the outdoor space 21. This ensures a more comfortable temperature in the indoor space 22 while maintaining effective ventilation, preventing the temperature of the indoor space 22 from being affected by excessive intake of overcooled or overheated outdoor air, and providing a better user experience.

[0046] In some embodiments, if the temperature difference between the temperature of the indoor space 22 and the temperature of the outdoor space 21 is less than or equal to the first set temperature, the first damper 20 is controlled so that the air inlet area between the air inlet side of the evaporator 14 and the outdoor space 21 is larger than the air inlet area between the air inlet side of the evaporator 14 and the indoor space 22, including: if the temperature difference between the temperature of the indoor space 22 and the temperature of the outdoor space 21 decreases, the first damper 20 is controlled to increase the air inlet area between the air inlet side of the evaporator 14 and the outdoor space 21; if the temperature difference between the temperature of the indoor space 22 and the temperature of the outdoor space 21 increases, the first damper 20 is controlled to reduce the air inlet area between the air inlet side of the evaporator 14 and the outdoor space 21.

[0047] In some embodiments, if the temperature difference between the current temperature of the indoor space 22 and the current temperature of the outdoor space 21 is less than the temperature difference between the temperature of the indoor space 22 at the previous moment and the temperature of the outdoor space 21 at the previous moment, indicating that the temperature difference between the temperature of the indoor space 22 and the temperature of the outdoor space 21 is reduced, the first damper 20 can be controlled to increase the air intake of the outdoor space 21, so that the ventilation effect is better and faster.

[0048] In some embodiments, if the temperature difference between the current temperature of the indoor space 22 and the current temperature of the outdoor space 21 is greater than the temperature difference between the temperature of the indoor space 22 at the previous moment and the temperature of the outdoor space 21 at the previous moment, indicating that the temperature difference between the temperature of the indoor space 22 and the temperature of the outdoor space 21 has increased, the first damper 20 can be controlled to reduce the air intake of the outdoor space 21, so that the temperature of the outdoor space 21 has less impact on the indoor space 22.

[0049] In some embodiments, if the temperature difference between the temperature of the indoor space 22 and the temperature of the outdoor space 21 is greater than the first set temperature, the first damper 20 is controlled so that the air inlet area between the air inlet side of the evaporator 14 and the outdoor space 21 is smaller than the air inlet area between the air inlet side of the evaporator 14 and the indoor space 22, including: if the temperature difference between the temperature of the indoor space 22 and the temperature of the outdoor space 21 decreases, the first damper 20 is controlled to reduce the air inlet area between the air inlet side of the evaporator 14 and the indoor space 22; if the temperature difference between the temperature of the indoor space 22 and the temperature of the outdoor space 21 increases, the first damper 20 is controlled to increase the air inlet area between the air inlet side of the evaporator 14 and the indoor space 22.

[0050] In some embodiments, if the temperature difference between the current temperature of the indoor space 22 and the current temperature of the outdoor space 21 is less than the temperature difference between the temperature of the indoor space 22 at the previous moment and the temperature of the outdoor space 21 at the previous moment, indicating that the temperature difference between the temperature of the indoor space 22 and the temperature of the outdoor space 21 is reduced, the first damper 20 can be controlled to reduce the air intake of the indoor space 22, so that the ventilation effect is better and faster.

[0051] In some embodiments, if the temperature difference between the current temperature of the indoor space 22 and the current temperature of the outdoor space 21 is greater than the temperature difference between the temperature of the indoor space 22 at the previous moment and the temperature of the outdoor space 21 at the previous moment, indicating that the temperature difference between the temperature of the indoor space 22 and the temperature of the outdoor space 21 has increased, the first damper 20 can be controlled to increase the air intake of the indoor space 22 and reduce the impact of the temperature of the outdoor space 21 on the indoor space 22.

[0052] In some embodiments, the ventilation control method further includes obtaining the air quality of the indoor space 22. The air quality of the indoor space 22 can be obtained by an air quality sensor 28 disposed in the indoor space 22. Obtaining the environmental state of the outdoor space 21 includes determining the air quality of the outdoor space 21 based on the air quality of the indoor space 22. The air quality level of the outdoor space 21 can be determined by the air quality level of the indoor space 22 obtained by the air quality sensor 28 disposed in the indoor space 22, thereby reducing costs by only disposing the air quality sensor 28 in the indoor space 22. If the current air quality level of the indoor space 22 is higher than the air quality level of the indoor space 22 at a previous moment, it indicates that the air quality level of the outdoor space 21 is higher than level 2 (i.e., the air quality of the outdoor space 21 is poor). In this case, the first damper 20 can be controlled to rotate to connect the air inlet side of the evaporator 14 with the indoor space 22, thereby achieving ventilation through internal air circulation. In some other embodiments, if the current AQI of the indoor space 22 is higher than the AQI of the indoor space 22 at the previous moment, it means that the air quality level of the outdoor space 21 is higher than level two.

[0053] In some embodiments, obtaining the environmental state of the outdoor space 21 includes obtaining the temperature and air quality of the outdoor space 21. The temperature of the outdoor space 21 may be obtained by a temperature sensor, and the air quality level of the outdoor space 21 may be obtained by an air quality sensor 28.

[0054] Controlling the first damper 20 based on at least the ambient conditions of the outdoor space 21 includes: if the ambient temperature of the outdoor space 21 is lower than a second set temperature and the air quality level of the outdoor space 21 is higher than level 2, controlling the first damper 20 to connect the air inlet side of the evaporator 14 with the indoor space 22, and controlling the second damper 23 to switch to an open state to connect the first air duct 12 and the second air duct 13. When the ambient temperature of the outdoor space 21 is lower than the second set temperature, indicating that the temperature of the outdoor space 21 is low, the second damper 23 may be controlled to switch to an open state to connect the first air duct 12 and the second air duct 13. This allows the evaporator 14 to heat the condenser 15 when the temperature of the outdoor space 21 is low, resulting in faster heating. Furthermore, when the air quality level of the outdoor space 21 is higher than level 2, indicating that the air quality of the outdoor space 21 is poor, the first damper 20 may be controlled to connect the air inlet side of the evaporator 14 with the indoor space 22, allowing air to circulate internally. In this way, the air inlet side of the evaporator 14 is connected to the indoor space 22, and the evaporator 14 is used to heat the condenser 15, thereby accelerating the heating speed and performing internal circulation ventilation, so that the temperature of the indoor space 22 is more suitable.

[0055] 1 and 3 , in some embodiments, the ventilation control method further includes steps S201 and S202 .

[0056] In step S201 , the air quality of the indoor space 22 is obtained.

[0057] In step S202, the rotational speeds of the first and second fans 29, 30 are controlled based on the air quality of the indoor space 22. When the air quality of the indoor space 22 is poor, the first and second fans 29, 30 can be controlled to rotate faster, increasing the air delivery speed of the first and second fans 29, 30 and thus the ventilation speed. When the air quality of the indoor space 22 is good, the rotational speeds of the first and second fans 29, 30 can be reduced, thereby saving energy and providing a more comfortable user experience.

[0058] 1 and 4 , in some embodiments, the ventilation control method further includes steps S301 and S302 .

[0059] In step S301, in response to a command to activate the ventilation mode, the air quality of the indoor space 22 is obtained. The user can issue a command to activate the ventilation mode by selecting a ventilation mode or inputting a ventilation mode via voice input. The air quality of the indoor space 22 can be obtained in response to the command to activate the ventilation mode.

[0060] In step S302, a determination is made as to whether to activate the ventilation mode based on the air quality of the indoor space 22. If the current air quality level of the indoor space 22 is higher than level 2, the thermal management system 10 is controlled to switch to the ventilation mode. If the current air quality level of the indoor space 22 is lower than or equal to level 2, a prompt signal is generated indicating that the air quality of the indoor space 22 is excellent. The activation of the ventilation mode can be determined based on the air quality of the indoor space 22. The ventilation mode can be switched to when the air quality level is higher than level 2. When the air quality level is lower than or equal to level 2, a prompt signal indicating that the air quality of the indoor space 22 is excellent can be obtained without activating the ventilation mode, thereby saving energy. Furthermore, if the air quality level of the indoor space 22 is higher than level 2 and the thermal management system 10 is controlled to switch to the ventilation mode, the ventilation mode is exited if the air quality level of the indoor space 22 reaches level 2.

[0061] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0062] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A ventilation control method, applied to a vehicle, the vehicle comprising a thermal management system, the thermal management system comprising a refrigerant circuit and a first air duct and a second air duct which are separated and arranged; the refrigerant circuit comprises an evaporator and a condenser which are connected to each other, the evaporator is arranged in the first air duct, and the condenser is arranged in the second air duct; a first damper is rotatably arranged in the first air duct; The ventilation control method comprises: In the ventilation mode of the vehicle, obtaining the environmental state of the outdoor space; The first damper is controlled at least according to an environmental state of the outdoor space so that an air inlet side of the evaporator communicates with at least one of the outdoor space and the indoor space.

2. The ventilation control method according to claim 1, wherein: The obtaining of the environmental state of the outdoor space comprises: obtaining the air quality level of the outdoor space; The controlling the first damper at least according to the environmental state of the outdoor space comprises: In response to the air quality level of the outdoor space being lower than or equal to level 2, controlling the first damper so that an air inlet side of the evaporator is at least in communication with the outdoor space; In response to the air quality level of the outdoor space being higher than level 2, the first damper is controlled to allow the air inlet side of the evaporator to communicate with the indoor space.

3. The ventilation control method according to claim 1 or 2, wherein: The obtaining of the environmental state of the outdoor space includes: obtaining the temperature of the outdoor space; The ventilation control method further includes: obtaining the temperature of the indoor space; The controlling the first damper at least according to the environmental state of the outdoor space comprises: In response to a temperature difference between the temperature of the indoor space and the temperature of the outdoor space being less than or equal to a first set temperature, controlling the first damper so that an air inlet area between an air inlet side of the evaporator and the outdoor space is larger than an air inlet area between the air inlet side of the evaporator and the indoor space; In response to a temperature difference between the temperature of the indoor space and the temperature of the outdoor space being greater than the first set temperature, the first damper is controlled so that an air inlet area between an air inlet side of the evaporator and the outdoor space is smaller than an air inlet area between the air inlet side of the evaporator and the indoor space.

4. The ventilation control method according to claim 3, wherein: In response to the temperature difference between the temperature of the indoor space and the temperature of the outdoor space being less than or equal to a first set temperature, controlling the first damper so that the air inlet area between the air inlet side of the evaporator and the outdoor space is larger than the air inlet area between the air inlet side of the evaporator and the indoor space comprises: In response to a decrease in the temperature difference between the temperature of the indoor space and the temperature of the outdoor space, controlling the first damper to increase an air intake area between an air intake side of the evaporator and the outdoor space; In response to an increase in the temperature difference between the temperature of the indoor space and the temperature of the outdoor space, the first damper is controlled to reduce an air intake area between an air intake side of the evaporator and the outdoor space.

5. The ventilation control method according to claim 3, wherein: In response to the temperature difference between the temperature of the indoor space and the temperature of the outdoor space being greater than the first set temperature, controlling the first damper so that the air inlet area between the air inlet side of the evaporator and the outdoor space is smaller than the air inlet area between the air inlet side of the evaporator and the indoor space, comprising: In response to a decrease in the temperature difference between the temperature of the indoor space and the temperature of the outdoor space, controlling the first damper to reduce an air intake area between an air intake side of the evaporator and the indoor space; In response to an increase in the temperature difference between the temperature of the indoor space and the temperature of the outdoor space, the first damper is controlled to increase an air intake area between an air intake side of the evaporator and the indoor space.

6. The ventilation control method according to claim 1, further comprising: Obtaining the air quality of the indoor space; Wherein, obtaining the environmental state of the outdoor space includes: determining the air quality of the outdoor space according to the air quality of the indoor space; if the current air quality level of the indoor space is higher than the air quality level of the indoor space at the previous moment, it means that the air quality level of the outdoor space is higher than level two.

7. The ventilation control method according to claim 1, wherein: The thermal management system includes a second damper disposed between the first air duct and the second air duct; The obtaining of the environmental state of the outdoor space includes: obtaining the temperature and air quality level of the outdoor space; The controlling the first damper at least according to the environmental state of the outdoor space comprises: In response to the temperature of the outdoor space being lower than a second set temperature and the air quality level of the outdoor space being higher than level 2, the first damper is controlled to connect the air inlet side of the evaporator with the indoor space, and the second damper is controlled to switch to an open state to connect the first air duct with the second air duct.

8. The ventilation control method according to claim 1, wherein: The thermal management system includes a first fan and a second fan, the first fan is disposed in the first air duct and is configured to supply air to the evaporator, and the second fan is disposed in the second air duct and is configured to supply air to the condenser; The ventilation control method further comprises: Obtaining the air quality of the indoor space; The rotation speeds of the first fan and the second fan are controlled according to the air quality of the indoor space.

9. The ventilation control method according to claim 1, further comprising: In response to an instruction to start the ventilation mode, obtaining the air quality of the indoor space; Determine whether to start the ventilation mode according to the air quality of the indoor space.

10. The ventilation control method according to claim 9, wherein: The step of determining whether to start the ventilation mode according to the air quality of the indoor space includes: In response to the current air quality level of the indoor space being higher than level 2, controlling the thermal management system to switch to the ventilation mode; In response to the current air quality level of the indoor space being lower than or equal to level 2, a prompt signal indicating that the current air quality of the indoor space is good is generated and the ventilation mode is not turned on.

11. A vehicle, comprising a thermal management system and a controller, wherein the controller is connected to the thermal management system and is configured to execute the ventilation control method according to any one of claims 1 to 10.

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