Method and device for introducing fresh air into a vehicle, electronic device and vehicle

Abstract

The application provides an in-vehicle fresh air introduction method and device, an electronic device and a vehicle, and the method comprises the following steps: acquiring a current carbon dioxide concentration in a rear compartment, wherein the rear compartment is located in a target vehicle; in the case that the current carbon dioxide concentration is higher than or equal to a first concentration threshold, acquiring a current vehicle speed of the target vehicle; determining a target fresh air introduction strategy corresponding to the current vehicle speed; determining a target execution time length of the target fresh air introduction strategy according to the current carbon dioxide concentration, and executing the target fresh air introduction strategy according to the target execution time length, so as to reduce the carbon dioxide concentration in the rear compartment. Through the application, the technical problem that it is difficult to realize fresh air introduction of the rear compartment without changing the existing hardware structure of the vehicle body and the rear air conditioner box in the related art is solved.

Description

Technical Field

[0001] This application relates to the field of vehicle intelligent control technology, and in particular to a method and device for introducing fresh air into a vehicle, electronic equipment, and a vehicle. Background Technology

[0002] With the upgrading of automobile consumption, MPVs, SUVs, and large sedans are generally equipped with rear air conditioning units (rear HVAC assemblies) to achieve independent temperature control for rear passengers and improve their comfort. However, existing rear air conditioning units typically only have recirculated air inlets (i.e., internal recirculation air inlets) and lack independent fresh air inlets. This structural limitation causes the rear air conditioning unit to remain in a closed internal recirculation state for extended periods.

[0003] When a vehicle is fully loaded or traveling for extended periods, carbon dioxide (CO2) exhaled by rear passengers accumulates. Studies show that when the CO2 concentration inside the vehicle exceeds 800 ppm, passengers may experience symptoms such as drowsiness and decreased concentration; exceeding 1000 ppm poses a safety hazard. Although the front air conditioning unit is equipped with an external air circulation function, the rear air conditioning unit cannot independently introduce fresh air. Therefore, any improvement in air quality in the rear passenger area relies solely on indirect diffusion of fresh air from the front air conditioning unit, resulting in limited effectiveness and a delayed response.

[0004] A few models attempt to add an independent fresh air duct to the rear air conditioning unit, but this requires modifications to the vehicle body structure, air conditioning unit structure, new molds, and the addition of waterproof and dustproof structures, otherwise it is impossible to introduce fresh air into the rear passenger compartment.

[0005] Therefore, there is a technical problem in the relevant technologies that makes it difficult to introduce fresh air into the rear passenger compartment without changing the existing hardware structure of the vehicle body and the rear air conditioning unit. Summary of the Invention

[0006] This application provides a method and device for introducing fresh air into a vehicle, an electronic device, and a vehicle, to at least solve the problem in the related art that it is difficult to introduce fresh air into the rear passenger compartment without changing the existing hardware structure of the vehicle body and the rear air conditioning unit.

[0007] According to one aspect of the embodiments of this application, a method for introducing fresh air into a vehicle is provided, comprising: Obtain the current carbon dioxide concentration in the rear passenger compartment, wherein the rear passenger compartment is located in the target vehicle; If the current carbon dioxide concentration is higher than or equal to a first concentration threshold, the current speed of the target vehicle is obtained; Determine the target fresh air introduction strategy corresponding to the current vehicle speed; Based on the current carbon dioxide concentration, the target execution duration of the target fresh air introduction strategy is determined, and the target fresh air introduction strategy is executed according to the target execution duration to reduce the carbon dioxide concentration in the rear passenger compartment.

[0008] Optionally, as described above, determining the target fresh air introduction strategy corresponding to the current vehicle speed includes: When the current vehicle speed is determined to be less than a preset speed limit, a first fresh air introduction strategy is obtained that includes only control mode 1 or both control mode 1 and control mode 2. The target fresh air introduction strategy includes the first fresh air introduction strategy. The control method 1 includes: controlling the front air conditioning unit of the target vehicle to operate in external circulation mode, drawing fresh air into the front passenger compartment, causing the air in the passenger compartment to flow from the front passenger compartment to the rear passenger compartment, and discharging the air in the rear passenger compartment through the pressure relief valve at the rear of the vehicle body, wherein the passenger compartment includes the front passenger compartment and the rear passenger compartment. The control method 2 includes: increasing the speed of the front blower.

[0009] Optionally, as described above, determining the target fresh air introduction strategy corresponding to the current vehicle speed includes: When the current vehicle speed is determined to be greater than or equal to a preset speed limit, a second fresh air introduction strategy is obtained that includes only control mode 3 or both control mode 3 and control mode 4. The target fresh air introduction strategy includes the second fresh air introduction strategy. The control method 3 includes: using inertial pressure to force fresh air from the rear of the target vehicle into the target vehicle through the pressure relief valve gap and / or air intake channel, maintaining the rear air conditioning unit of the target vehicle in internal circulation mode, so as to use the low pressure fluctuation generated by the air intake of the rear blower to draw the fresh air that has entered the rear of the target vehicle to the circulation of the rear air conditioning unit, thereby accelerating the ventilation of the rear passenger compartment; The control method 4 includes: maintaining the closed duration of the recirculation damper of the rear air conditioning unit for a preset duration, and then opening the recirculation damper.

[0010] Optionally, as described above, determining the target fresh air introduction strategy corresponding to the current vehicle speed includes: When the current vehicle speed is determined to be greater than or equal to a preset lower speed limit and less than a preset upper speed limit, the target fresh air introduction strategy is obtained as follows; Either the first fresh air introduction strategy or the second fresh air introduction strategy is used as the target fresh air introduction strategy, wherein the first fresh air introduction strategy is a fresh air introduction strategy when the vehicle speed is less than a preset lower speed limit, and the second fresh air introduction strategy is a fresh air introduction strategy when the vehicle speed is greater than or equal to a preset upper speed limit; or... The current upward trend of carbon dioxide concentration in the rear passenger compartment is obtained. If the current upward trend is greater than or equal to a preset concentration increase threshold, the first fresh air introduction strategy is adopted as the target fresh air introduction strategy. If the current upward trend is less than the preset concentration increase threshold, the second fresh air introduction strategy is adopted as the target fresh air introduction strategy.

[0011] Optionally, as described above, after executing the target fresh air introduction strategy according to the target execution duration, the method further includes: Step 1: Obtain the real-time carbon dioxide concentration in the rear passenger compartment; Step 2: If the real-time carbon dioxide concentration is determined to be lower than or equal to the second concentration threshold, exit the execution of the target fresh air introduction strategy according to the preset exit strategy, wherein the second concentration threshold is lower than the first concentration threshold; Step 3: Update the current carbon dioxide concentration using the real-time carbon dioxide concentration, and perform the following steps: Determine the target execution duration of the target fresh air introduction strategy based on the current carbon dioxide concentration, and execute the target fresh air introduction strategy according to the target execution duration; After the target fresh air introduction strategy has been executed for the target execution duration, proceed to Step 1.

[0012] Optionally, as described above, determining the target execution duration of the target fresh air introduction strategy based on the current carbon dioxide concentration, and executing the target fresh air introduction strategy according to the target execution duration, includes: Obtain the number of occupants in the rear passenger compartment; if the number of occupants is greater than the preset occupant limit, determine the air exchange frequency of the target fresh air introduction strategy according to the number of occupants, extend the target execution time to a specified execution time according to the number of occupants, and execute the target fresh air introduction strategy according to the specified execution time and air exchange frequency; The method further includes: Obtain the air quality outside the target vehicle; if it is determined that the air quality does not meet the preset quality requirements, stop executing the target fresh air introduction strategy and purify the air inside the target vehicle; When the front air conditioning unit of the target vehicle is forced to operate in internal circulation mode, the rear air conditioning unit circulation damper of the target vehicle is closed / opened in a pulse manner, and external fresh air is introduced by micro-backflow of the vehicle body pressure relief valve to alleviate the situation where the current carbon dioxide concentration is higher than or equal to the first concentration threshold.

[0013] Optionally, as described above, the method further includes at least one of the following: If the current carbon dioxide concentration is below the first concentration threshold, maintain the recirculation within the rear air conditioning unit; or, If the current carbon dioxide concentration is lower than the first concentration threshold, determine the upward trend of the current carbon dioxide concentration. If the upward trend is higher than or equal to a preset concentration increase threshold, obtain the current speed of the target vehicle. Determine the target fresh air introduction strategy corresponding to the current speed. Based on the current carbon dioxide concentration, determine the target execution duration of the target fresh air introduction strategy and execute the target fresh air introduction strategy according to the target execution duration to reduce the carbon dioxide concentration in the rear passenger compartment.

[0014] According to another aspect of the embodiments of this application, a vehicle interior fresh air introduction device is also provided, comprising: A concentration acquisition module is used to acquire the current carbon dioxide concentration in the rear passenger compartment, wherein the rear passenger compartment is located in the target vehicle; The vehicle speed acquisition module is used to acquire the current vehicle speed of the target vehicle when the current carbon dioxide concentration is higher than or equal to a first concentration threshold. The strategy determination module is used to determine the target fresh air introduction strategy corresponding to the current vehicle speed; The execution module is used to determine the target execution duration of the target fresh air introduction strategy according to the current carbon dioxide concentration, and execute the target fresh air introduction strategy according to the target execution duration to reduce the carbon dioxide concentration in the rear passenger compartment.

[0015] According to another aspect of the embodiments of this application, an electronic device is also provided, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; wherein the memory is used to store a computer program; and the processor is used to execute the method steps of any of the above embodiments by running the computer program stored in the memory.

[0016] According to another aspect of the embodiments of this application, a vehicle is also provided, including the electronic equipment described in the foregoing embodiments.

[0017] In this embodiment, a method of introducing fresh air into the rear passenger compartment is adopted without modifying the vehicle structure, through strategic improvements. This is achieved by obtaining the current carbon dioxide concentration in the rear passenger compartment, located within the target vehicle; if the current carbon dioxide concentration is higher than or equal to a first concentration threshold, obtaining the current speed of the target vehicle; determining a target fresh air introduction strategy corresponding to the current speed; determining the target execution duration of the target fresh air introduction strategy based on the current carbon dioxide concentration; and executing the target fresh air introduction strategy for the target execution duration to reduce the carbon dioxide concentration in the rear passenger compartment. Since the need for fresh air introduction can be determined based on the current carbon dioxide concentration, and the corresponding target fresh air introduction strategy can be determined based on the current speed of the target vehicle, and the target execution duration of the target fresh air introduction strategy can also be determined based on the current carbon dioxide concentration, the purpose of effectively reducing the carbon dioxide concentration in the rear passenger compartment can be achieved, thus improving the air quality in the rear passenger compartment. This solves the technical problem in related technologies where it is difficult to achieve fresh air introduction into the rear passenger compartment without changing the existing hardware structure of the vehicle body and rear air conditioning unit. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the hardware environment of an optional in-vehicle fresh air introduction method according to an embodiment of this application; Figure 2 This is a schematic flowchart of an optional in-vehicle fresh air introduction method according to an embodiment of this application; Figure 3 This is a structural block diagram of an optional in-vehicle fresh air introduction device according to an embodiment of this application; Figure 4 This is a structural block diagram of an optional electronic device according to an embodiment of this application. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] First, some nouns or terms that appear in the description of the embodiments of this application shall be interpreted as follows: 1. The front-mounted air conditioning unit is typically located below the dashboard, in front of the firewall (i.e., the central area at the front of the driver's compartment), adjacent to the engine compartment or electric drive compartment. The front-mounted air conditioning unit is the core component of the vehicle's main air conditioning system, integrating the evaporator (cooling), heater core (heating), air mixing damper, and mode damper; it is responsible for cooling, heating, dehumidifying, and distributing airflow (such as blowing air onto the face, feet, and defrosting) to the air entering the front of the passenger compartment; providing the main temperature-controlled airflow for the driver and front passengers.

[0024] 2. Rear-mounted air conditioning unit, typically located under the rear seats, in front of the trunk, or under the rear floor of the vehicle (common in MPVs, large SUVs, or high-end sedans). As an independent rear climate control unit, it allows for individual adjustment of the temperature and airflow in the rear area. It usually contains a small evaporator / heater core and independent dampers. Some models draw refrigerant or hot water from the main air conditioning unit via piping. This enhances rear passenger comfort and enables dual-zone climate control.

[0025] 3. The front-mounted blower is typically installed inside the front air conditioning unit or adjacent to its air intake, usually located below the dashboard on the passenger side. As the main power source for airflow, the front-mounted blower drives outside or recirculated air through the heat exchanger (evaporator / heater core) within the air conditioning unit. By adjusting its speed, it controls the airflow volume, directly affecting the cooling / heating response speed and wind noise level. It serves only the front passenger area (if there is no rear blower, the rear passengers rely on natural airflow diffusion from the front).

[0026] 4. The rear pressure relief valve is typically located on the inside of the rear bumper, on the upper part of the rear bulkhead (the partition between the trunk and passenger compartment), or near the rear side window. Some designs incorporate a hidden one-way exhaust grille. The rear pressure relief valve is used to balance the air pressure inside and outside the passenger compartment: when the air conditioning blower continuously blows air into the compartment, the pressure inside rises, and the pressure relief valve automatically opens to release excess air, preventing a feeling of "bulging" or difficulty in opening the doors; it promotes airflow circulation: creating a directional airflow path of "front air intake → cabin flow → rear exhaust," improving ventilation efficiency and air quality; and it prevents rainwater / dust backflow: typically using a one-way valve or labyrinth structure, allowing internal gases to escape but preventing external pollutants from entering.

[0027] According to one aspect of the embodiments of this application, a method for introducing fresh air into a vehicle is provided. Optionally, in this embodiment, the above-described method for introducing fresh air into a vehicle can be applied to, for example... Figure 1 The hardware environment shown consists of terminal 1402 and server 1404. For example... Figure 1 As shown, server 1404 is connected to terminal 1402 via a network and can be used to provide services (such as data analysis / processing services, application services, etc.) to the terminal or clients installed on the terminal. A database can be set up on the server or independently of the server to provide data storage services for server 1404.

[0028] The aforementioned network may include, but is not limited to, at least one of the following: wired network, wireless network. The aforementioned wired network may include, but is not limited to, at least one of the following: wide area network, metropolitan area network, local area network. The aforementioned wireless network may include, but is not limited to, at least one of the following: Wi-Fi (Wireless Fidelity), Bluetooth. The terminal may not be limited to PC, mobile phone, tablet computer, etc.

[0029] The in-vehicle fresh air introduction method of this application embodiment can be executed by a server, a terminal, or both. Specifically, the in-vehicle fresh air introduction method of this application embodiment can also be executed by a client installed on the terminal.

[0030] Taking the in-vehicle fresh air introduction method in this embodiment as an example, Figure 2A method for introducing fresh air into a vehicle, as provided in this application embodiment, includes the following steps: Step S202: Obtain the current carbon dioxide concentration in the rear passenger compartment, where the rear passenger compartment is located in the target vehicle.

[0031] The in-vehicle fresh air introduction method in this embodiment can be applied to scenarios where it is necessary to reduce the concentration of carbon dioxide in the rear passenger compartment of a target vehicle.

[0032] To obtain carbon dioxide concentration data, a carbon dioxide sensor can be deployed in the rear passenger compartment of the target vehicle. This sensor is specifically designed to collect the current carbon dioxide concentration (C) in the rear passenger compartment in real time. The sensor can be installed on the rear roof or near the seats. These two locations are chosen because the rear roof is close to the occupants' breathing area, allowing for accurate detection of changes in carbon dioxide concentration caused by exhaled breath; while the area near the seats effectively captures the air quality near the ground level in the rear passenger space. Together, these factors ensure that the collected data accurately reflects the air quality in the rear passenger compartment.

[0033] In terms of data acquisition performance, the carbon dioxide sensor is set to a sampling frequency of 1 Hz or greater, meaning it collects carbon dioxide concentration data at least once per second. This sampling frequency ensures the system's real-time sensing capability for changes in carbon dioxide concentration in the rear passenger compartment. Even if the carbon dioxide concentration fluctuates rapidly in a short period of time due to factors such as passengers just getting into the vehicle, opening windows for ventilation, or switching air conditioning modes, the system can promptly detect these changes.

[0034] Through the aforementioned deployment and data collection methods, the system can continuously and in real-time obtain the current carbon dioxide concentration in the rear passenger compartment. This real-time data is a crucial basis for subsequently assessing the condition of rear passengers and triggering corresponding comfort or safety control strategies. For example, if the current carbon dioxide concentration C exceeds a preset safety threshold, it can be determined that there is insufficient air circulation in the rear passenger compartment, posing a risk of carbon dioxide accumulation. This will automatically trigger the introduction of fresh air through the windows to ensure the health and comfort of the rear passengers.

[0035] Step S204: If the current carbon dioxide concentration is higher than or equal to the first concentration threshold, obtain the current speed of the target vehicle.

[0036] Specifically, the system first determines whether the current carbon dioxide concentration C exceeds a first concentration threshold C_th1. This first preset threshold C_th1 can be an empirical value, i.e., a critical value with practical engineering significance. When the carbon dioxide concentration in the rear passenger compartment is below this value, it indicates that the air quality inside the vehicle is good, the breathing environment for rear passengers is healthy, and the system does not need to intervene in the air conditioning recirculation mode; it can simply maintain the current internal recirculation state of the rear air conditioning unit. The first preset threshold C_th1 is preferably set to 800 ppm.

[0037] In other words, when the carbon dioxide concentration in the rear passenger compartment gradually rises to a level greater than or equal to the first preset threshold C_th1 due to the continuous breathing of passengers consuming oxygen and expelling carbon dioxide, or due to insufficient fresh air replenishment caused by the target vehicle being in recirculation mode for a long time, it is determined that the air circulation in the rear passenger compartment is insufficient, and the carbon dioxide accumulation has reached a level that requires attention. Simply maintaining the current recirculation state can no longer guarantee the comfort and health of the rear passengers.

[0038] Once this judgment is confirmed, the current speed of the target vehicle is immediately acquired. Obtaining the current speed of the target vehicle is crucial for subsequent adjustments. This is because vehicle speed information directly determines the aerodynamic environment of the target vehicle while it is in motion: at low speeds or when stationary, the exchange capacity of external airflow is weak, resulting in poor natural ventilation; while at high speeds, the air pressure difference between the target vehicle and the outside environment significantly affects the ventilation efficiency of the air conditioning system. Therefore, when the carbon dioxide concentration in the rear seats exceeds the standard, the system must simultaneously know the current speed of the target vehicle in order to determine the necessary fresh air introduction strategy based on the actual driving conditions of the target vehicle (e.g., switching to external circulation mode, slightly opening the windows, or other air purification strategies more suitable for the current operating conditions, etc.). This ensures the health and comfort of rear passengers while also considering the overall energy efficiency and NVH performance of the vehicle.

[0039] Step S206: Determine the target fresh air introduction strategy corresponding to the current vehicle speed.

[0040] Specifically, a target fresh air introduction strategy corresponding to the current vehicle speed is determined. This means matching the optimal fresh air intake method and proportion from preset calibration data based on real-time changes in the current vehicle speed. For example, when the vehicle is at low speed or stationary, the external circulation mode is prioritized to introduce fresh air from outside; when driving at high speed, the vent opening is appropriately limited to balance the fresh air volume with wind noise and energy consumption, etc.

[0041] Step S208: Based on the current carbon dioxide concentration, determine the target execution duration of the target fresh air introduction strategy, and execute the target fresh air introduction strategy according to the target execution duration to reduce the carbon dioxide concentration in the rear passenger compartment.

[0042] Specifically, the higher the current carbon dioxide concentration C, the more severe the deterioration of air quality in the rear passenger compartment, and the longer the duration of fresh air introduction is required. Therefore, the target execution time can be dynamically calculated based on the difference between the current carbon dioxide concentration and the first preset threshold C_th1. For example, if the current carbon dioxide concentration only slightly exceeds the 800 ppm threshold, the target execution time is shorter (e.g., 1 minute), and only a brief introduction of fresh air is needed to bring the concentration back to a safe level. If the current carbon dioxide concentration is severely exceeded (e.g., exceeding 1000 ppm), the target execution time needs to be extended (e.g., 5 minutes) to ensure a continuous introduction of sufficient fresh air to fully dilute the carbon dioxide concentration. During execution, in addition to continuously running the target fresh air introduction strategy according to the target execution time, the decreasing trend of the carbon dioxide concentration in the rear passenger compartment can be continuously monitored until the carbon dioxide concentration in the rear passenger compartment returns to a safe range, thereby ensuring the respiratory health and riding comfort of rear passengers.

[0043] In this embodiment, fresh air is introduced into the rear passenger compartment without modifying the vehicle's structure, through strategic improvements. This is achieved by obtaining the current carbon dioxide concentration in the rear passenger compartment (located within the target vehicle); if the current carbon dioxide concentration is higher than or equal to a first concentration threshold, obtaining the target vehicle's current speed; determining a target fresh air introduction strategy corresponding to the current speed; determining the target execution duration of the target fresh air introduction strategy based on the current carbon dioxide concentration; and executing the target fresh air introduction strategy for the target execution duration to reduce the carbon dioxide concentration in the rear passenger compartment. Since the need for fresh air introduction can be determined based on the current carbon dioxide concentration, and the corresponding target fresh air introduction strategy can be determined based on the target vehicle's current speed, and the target execution duration of the target fresh air introduction strategy can also be determined based on the current carbon dioxide concentration, the goal of effectively reducing the carbon dioxide concentration in the rear passenger compartment can be achieved, thus improving the air quality in the rear passenger compartment. This solves the technical problem in related technologies where it is difficult to achieve fresh air introduction into the rear passenger compartment without changing the existing hardware structure of the vehicle body and rear air conditioning unit.

[0044] As an optional embodiment, the method described above determines a target fresh air introduction strategy corresponding to the current vehicle speed, including: Given that the current vehicle speed is less than a preset lower speed limit, a first fresh air introduction strategy is obtained, which includes only control mode 1 or both control mode 1 and control mode 2. The target fresh air introduction strategy includes the first fresh air introduction strategy: Control method 1 includes: controlling the front air conditioning unit of the target vehicle to operate in external circulation mode, drawing fresh air into the front passenger compartment, causing the air in the passenger compartment to flow from the front passenger compartment to the rear passenger compartment, and discharging the air in the rear passenger compartment through the pressure relief valve at the rear of the vehicle. The passenger compartment includes the front passenger compartment and the rear passenger compartment. Control method 2 includes: increasing the speed of the front blower.

[0045] Specifically, control method 1 includes controlling the front air conditioning unit of the target vehicle to operate in external circulation mode. If the front air conditioning unit is originally in internal circulation mode, it can be automatically switched to external circulation mode. When the front air conditioning unit is operating in external circulation mode, fresh outside air is actively drawn into the passenger compartment (including the front and rear passenger compartments), creating a positive pressure zone in the front passenger compartment. This positive pressure zone acts as the driving force for airflow, pushing the air in the passenger compartment from the front passenger compartment to the rear passenger compartment. As the airflow moves backward, the higher carbon dioxide concentration air accumulated in the rear passenger compartment due to the breathing of the passengers is gradually pushed to the rear of the vehicle and discharged outside the vehicle through the pressure relief valve at the rear of the vehicle. Through this directional airflow from front to back, the air in the rear passenger compartment is effectively replaced, thereby significantly improving the air quality in the rear. The preset lower speed limit can be 30km / h, 25km / h, etc.

[0046] Control method 2 includes increasing the speed of the front blower. Specifically, when simply switching to external circulation mode is insufficient to provide adequate airflow, the system can optionally further increase the speed of the front blower. Increasing the speed of the front blower directly increases the flow rate and velocity of the intake air, thereby strengthening the forward airflow intensity within the passenger compartment. This allows the high concentration of carbon dioxide air in the rear passenger compartment to be pushed to the rear pressure relief valve and expelled from the vehicle more quickly, accelerating the recovery of air quality in the rear.

[0047] It should be noted that at least control mode 1 will be executed. In addition, control mode 2 can also be executed simultaneously on top of control mode 1. When the two are executed in combination, the front air conditioning unit, in external circulation mode, works with the front blower with increased speed to complete the overall replacement of the air in the cabin in the shortest time with the maximum fresh air intake and airflow propulsion. This effectively reduces the carbon dioxide concentration in the rear cabin, ensuring the respiratory health and riding comfort of rear passengers.

[0048] As an optional embodiment, the method described above determines a target fresh air introduction strategy corresponding to the current vehicle speed, including: Given that the current vehicle speed is greater than or equal to the preset speed limit, a second fresh air introduction strategy is obtained, which includes only control mode 3 or both control mode 3 and control mode 4. The target fresh air introduction strategy includes the second fresh air introduction strategy. Control method 3 includes: using inertial pressure to force fresh air from the rear of the target vehicle into the target vehicle through the pressure relief valve gap and / or air intake channel, maintaining the rear air conditioning unit of the target vehicle in internal circulation mode, so as to use the low pressure fluctuation generated by the air intake of the rear blower to draw the fresh air that has entered the rear of the target vehicle to the circulation of the rear air conditioning unit, so as to accelerate the ventilation of the rear passenger compartment. Control method 4 includes: opening the recirculation damper after maintaining the recirculation damper of the rear air conditioning unit closed for a preset time.

[0049] Specifically, the method in this embodiment is applicable to situations where the current vehicle speed is in the high-speed range, i.e., the current vehicle speed v is greater than or equal to a preset high-speed threshold V_high (the preset speed limit can be 60km / h, 70km / h, etc.). In the high-speed range, the target vehicle travels at a higher speed, and the airflow speed around the vehicle body increases significantly. According to aerodynamic principles, a significant negative pressure zone is formed in the rear area of ​​the vehicle, i.e., the air pressure near the pressure relief valve at the rear of the vehicle body is lower than the air pressure inside the vehicle compartment. This negative pressure effect generates a usable inertial pressure that can force fresh air from behind the target vehicle into the target vehicle's interior through the pressure relief valve gap and / or a dedicated air intake channel.

[0050] Based on the aforementioned aerodynamic conditions, control method 3 includes: utilizing the aforementioned inertial pressure to force fresh air from the rear of the target vehicle into the vehicle through the pressure relief valve gap and / or air intake channel. This forced fresh air directly enters the rear passenger compartment area, providing a source of fresh air for rear passenger ventilation. Simultaneously, the system maintains the rear air conditioning unit of the target vehicle in recirculation mode. While the rear air conditioning unit maintains recirculation mode, the rear blower continues to operate, generating localized low-pressure fluctuations at its air inlet due to airflow being drawn into the impeller. These low-pressure fluctuations act as a traction mechanism, "pulling" the fresh air already mixed in the rear passenger compartment of the target vehicle from the surrounding air environment towards the blower air inlet, and then drawing it into the recirculation loop of the rear air conditioning unit. Thus, the fresh air that was originally passively infiltrating the rear passenger compartment is effectively captured and accelerated to participate in the recirculation of the rear air conditioning system, allowing for more thorough diffusion and mixing of fresh air in the rear space, thereby accelerating rear passenger ventilation.

[0051] Control mode 4 includes: To further enhance the above-mentioned ventilation effect, control mode 4 can be optionally executed. That is, on the basis of executing control mode 3, this control mode 4 can be selectively executed simultaneously. Specifically, after maintaining the closing duration of the circulation damper of the rear air conditioning box for a preset duration, the circulation damper is opened. Specifically, when operating in the high-speed range, the controller can briefly close the circulation damper of the rear air conditioning box. After the closing duration lasts for the preset duration (for example, any duration between 0.5 seconds and 2 seconds), it resumes to open. The brief closing of the circulation damper instantaneously strengthens the low-pressure fluctuation effect at the air inlet of the rear blower, generating a stronger traction force to more efficiently suck the fresh air that has been pressed into the rear compartment through the gap of the pressure relief valve or the air inlet channel into the rear air conditioning box circulation. When the preset duration ends and the circulation damper is reopened, the rear air conditioning circuit that has been fully mixed with fresh air can quickly blow the introduced fresh air to all corners of the rear compartment, thereby completing an efficient replacement of the air in the rear compartment at an extremely low energy consumption cost, and then effectively reducing the carbon dioxide concentration in the rear compartment.

[0052] As an optional embodiment, as the aforementioned method, determining the target fresh air introduction strategy corresponding to the current vehicle speed includes: When it is determined that the current vehicle speed is greater than or equal to the preset speed lower limit and less than the preset speed upper limit, the following target fresh air introduction strategy is obtained; Either the first fresh air introduction strategy or the second fresh air introduction strategy is used as the target fresh air introduction strategy, where the first fresh air introduction strategy is the fresh air introduction strategy when the vehicle speed is less than the preset speed lower limit, and the second fresh air introduction strategy is the fresh air introduction strategy when the vehicle speed is greater than or equal to the preset speed upper limit.

[0053] That is to say, when it is determined that the current vehicle speed is greater than or equal to the preset speed lower limit and less than the preset speed upper limit, the following target fresh air introduction strategy is obtained. Here, the preset speed lower limit is the low-speed threshold V_low, for example, the aforementioned 30 km / h; the preset speed upper limit is the high-speed threshold V_high, for example, the aforementioned 60 km / h. Therefore, when the current vehicle speed is greater than or equal to the preset speed lower limit and less than the preset speed upper limit, it is in the medium-speed range, defined as the current vehicle speed v satisfying V_low ≤ v < V_high. This vehicle speed range has a transitional nature. The driving wind pressure is higher than that in the low-speed range, but it does not have a strong tail negative pressure effect like the high-speed range. Therefore, there is flexibility in the selection of the fresh air introduction strategy.

[0054] Within this medium-speed range, the system can use one of two strategy selection methods to determine the target fresh air introduction strategy. The first selection method is to use either the first or the second fresh air introduction strategy as the target fresh air introduction strategy. While the current vehicle speed is within the medium-speed range, either the first or the second fresh air introduction strategy can be selected. Optionally, the two strategies can be selected randomly, based on a default preset, manually by the driver, or, according to energy consumption requirements, the lower-energy-consumption target fresh air introduction strategy can be selected.

[0055] The current upward trend of carbon dioxide concentration in the rear passenger compartment is obtained. If the current upward trend is greater than or equal to a preset concentration increase threshold, the first fresh air introduction strategy is adopted as the target fresh air introduction strategy. If the current upward trend is less than the preset concentration increase threshold, the second fresh air introduction strategy is adopted as the target fresh air introduction strategy.

[0056] In other words, when the current vehicle speed is within the medium speed range, the second option is to obtain the current upward trend of carbon dioxide concentration in the rear passenger compartment and make a more precise choice based on the dynamic changes of this upward trend. The current upward trend of carbon dioxide concentration (C) in the rear passenger compartment can be calculated by monitoring the rate of change of the carbon dioxide concentration value (C) in real time, expressed in ppm / min. If the current upward trend is greater than or equal to a preset concentration increase threshold, i.e., when the rate of increase of carbon dioxide concentration is relatively fast (e.g., greater than 50 ppm / min, or greater than 40 ppm / min, etc.), it indicates that the deterioration of air quality in the rear passenger compartment is accelerating. At this time, a larger ventilation volume is needed, i.e., more fresh air is introduced to quickly curb the rising trend of carbon dioxide concentration. Therefore, the system adopts the first fresh air introduction strategy as the target fresh air introduction strategy, utilizing the front air conditioning external circulation mode to deliver a large-volume directional airflow from front to rear, using maximum ventilation capacity to quickly expel the carbon dioxide accumulated in the rear seats. Conversely, when the current upward trend is less than the preset concentration increase threshold, meaning the rate of increase in carbon dioxide concentration is slow, it indicates that the rate of deterioration in rear-seat air quality is relatively gradual. In this case, the system can adopt a second fresh air introduction strategy as the target fresh air introduction strategy. This strategy combines passive air intake due to inertial pressure at high speeds with the low-pressure traction effect of the rear air conditioning circuit. While meeting ventilation requirements, it avoids the additional energy consumption caused by switching the front air conditioning unit to external circulation mode and increasing the speed of the blower, thus better saving vehicle energy consumption and balancing comfort and energy-saving requirements.

[0057] As an optional embodiment, the method described above, after executing the target fresh air introduction strategy according to the target execution duration, further includes: Step 1: Obtain the real-time carbon dioxide concentration in the rear passenger compartment.

[0058] Specifically, the system continuously acquires the real-time carbon dioxide concentration (C') in the rear passenger compartment using a carbon dioxide sensor installed inside, ensuring real-time awareness of changes in air quality within the rear passenger compartment. During the implementation of the target fresh air introduction strategy, monitoring does not stop after a single ventilation cycle; instead, it continuously collects real-time carbon dioxide concentration data in the rear passenger compartment through the carbon dioxide sensor, forming a closed-loop feedback monitoring mechanism. This continuous monitoring is the fundamental basis for subsequently determining whether to continue implementing the target fresh air introduction strategy and when to discontinue it.

[0059] Step 2: If the real-time carbon dioxide concentration is determined to be lower than or equal to the second concentration threshold, exit the execution of the target fresh air introduction strategy according to the preset exit strategy, wherein the second concentration threshold is lower than the first concentration threshold.

[0060] Specifically, the real-time carbon dioxide concentration value C' obtained in step 1 can be compared with the second concentration threshold C_th2. This second concentration threshold C_th2 can be 700 ppm, 650 ppm, etc., lower than the aforementioned first concentration threshold C_th1. In other words, the first concentration threshold is the entry condition for triggering the fresh air introduction strategy, while the second concentration threshold is the exit condition for exiting the fresh air introduction strategy. There is a certain difference buffer between the first and second concentration thresholds (i.e., the first concentration threshold minus the second concentration threshold). This setting can effectively prevent the system from frequently switching between the fresh air introduction strategy and the normal internal circulation state near the critical concentration, avoiding unnecessary energy consumption fluctuations and discomfort in the vehicle's airflow due to repeated mode changes.

[0061] If the real-time carbon dioxide concentration C' is determined to be lower than or equal to the second concentration threshold C_th2, it indicates that the carbon dioxide concentration in the rear passenger compartment has been sufficiently diluted by the execution of the target fresh air introduction strategy, restoring it to a safe and excellent level. At this point, the system exits the target fresh air introduction strategy according to the preset exit method. Specifically, if the fresh air introduction strategy in the low-speed range (first fresh air introduction strategy) was previously executed, the preset exit method includes: closing the external circulation mode of the front air conditioning unit and restoring it to the internal circulation state; if the speed of the front blower was previously increased, the blower speed is restored to the normal set value. If the system was previously executed in the high-speed range (second fresh air introduction strategy), the preset exit method includes: restoring the recirculation damper of the rear air conditioning unit to the normally open state and stopping the short-term closing operation of its recirculation damper; the rear air conditioning unit continues to operate normally in the internal circulation mode. After completing the above exit operation, the vehicle's air conditioning system returns to the normal internal circulation mode, and the vehicle's energy consumption returns to the normal level.

[0062] Step 3: Update the current carbon dioxide concentration using real-time carbon dioxide concentration, and execute the following steps: Determine the target execution duration of the target fresh air introduction strategy based on the current carbon dioxide concentration, and execute the target fresh air introduction strategy according to the target execution duration; After the target fresh air introduction strategy has been executed for the target execution duration, proceed to Step 1.

[0063] In other words, if the real-time carbon dioxide concentration C' is higher than the second concentration threshold C_th2, meaning the real-time carbon dioxide concentration has not yet dropped below the safe range of 700 ppm, it indicates that the air quality control target in the rear passenger compartment has not been fully achieved, and the target fresh air introduction strategy needs to continue. At this point, the current carbon dioxide concentration can be updated using the real-time carbon dioxide concentration, that is, the newly collected concentration value C' can be assigned to the current carbon dioxide concentration C, ensuring that the system implementing the method of this embodiment keeps its perception of the air quality in the rear passenger compartment synchronized with the actual situation.

[0064] After the update, the target execution duration of the fresh air introduction strategy is redefined based on the updated current carbon dioxide concentration. Since the current carbon dioxide concentration has decreased compared to the previous execution round, the target execution duration calculated in this round will be shortened accordingly. This means an adaptive adjustment is implemented, where higher concentrations result in longer airflow and lower concentrations result in shorter airflow. Subsequently, the target fresh air introduction strategy can continue to be executed according to the redefined target execution duration. After this round of target execution duration is completed, the process jumps back to step 1, retrieves the real-time carbon dioxide concentration in the rear passenger compartment again, and enters the next judgment loop.

[0065] This process repeats itself, with steps 1 through 3 forming a complete closed-loop control circuit. This closed-loop mechanism causes the carbon dioxide concentration in the rear passenger compartment to decrease in a stepwise manner. Each round of fresh air introduction pushes the concentration closer to the second concentration threshold until it finally drops below the second concentration threshold to a safe range, at which point the target fresh air introduction strategy is exited, and the normal internal circulation state is restored.

[0066] The real-time feedback-based wheel-by-wheel approximation control method adopted in this embodiment not only ensures the health and comfort of rear passengers, but also avoids unnecessary energy waste of the whole vehicle caused by excessive ventilation.

[0067] As an optional embodiment, the method described above involves determining the target execution duration of the target fresh air introduction strategy based on the current carbon dioxide concentration, and executing the target fresh air introduction strategy according to the target execution duration, including: Obtain the number of occupants in the rear passenger compartment; if the number of occupants exceeds the preset occupant limit, determine the ventilation frequency of the target fresh air introduction strategy according to the number of occupants, extend the target execution time to the specified execution time according to the number of occupants, and execute the target fresh air introduction strategy according to the specified execution time and ventilation frequency.

[0068] Specifically, the number of occupants in the rear passenger compartment can be determined first. This number can be obtained through rear seat pressure sensors or an in-vehicle camera, thus determining the actual number of rear passengers, N. The number of occupants is a key variable affecting the rate of carbon dioxide production; the rate of increase in carbon dioxide concentration is positively correlated with the number of occupants: the more occupants, the faster carbon dioxide is produced through respiration, and the faster the air quality in the rear passenger compartment deteriorates, thus requiring a stronger ventilation capacity to cope.

[0069] After obtaining the number of occupants, it can be compared with a preset occupant limit. This preset occupant limit can be set to a default value (e.g., 1 person, 2 people, etc.). When the number of occupants exceeds the preset occupant limit, it indicates that the current sources of carbon dioxide generation have increased, and relying solely on the standard target execution duration and regular ventilation frequency is insufficient to effectively curb the rapid rise in carbon dioxide concentration and reduce it. In this case, the following two adjustment measures can be taken: First, determine the ventilation frequency of the target fresh air introduction strategy according to the number of occupants, that is, increase the ventilation frequency proportionally so that the number of fresh air replacements per unit time matches the number of occupants; Second, extend the target execution duration to a specified execution duration according to the number of occupants. This specified execution duration is longer than the original target execution duration to ensure sufficient time for the carbon dioxide accumulated from the exhalations of multiple people to be fully diluted. Finally, execute the target fresh air introduction strategy according to the specified execution duration and the adjusted ventilation frequency.

[0070] In a further preferred embodiment, when the number of occupants is less than or equal to the preset upper limit of occupants, that is, when the actual number of people sitting in the rear row is small, the carbon dioxide generation rate is relatively slow. In this case, the ventilation frequency can be appropriately reduced or the standard target execution time can be maintained, thereby saving the vehicle's energy consumption while ensuring that the air quality meets the standards.

[0071] The method further includes: Obtain the air quality outside the target vehicle; if the air quality does not meet the preset quality requirements, stop the target fresh air introduction strategy and purify the air inside the target vehicle.

[0072] Specifically, the system can also acquire the air quality outside the target vehicle, which may include, but is not limited to, the PM2.5 concentration value P_out. If the acquired outside air quality does not meet the preset quality requirements, for example, if the outside PM2.5 concentration P_out exceeds the third preset threshold (e.g., 75 μg / m³, corresponding to a moderate pollution level), it indicates that the outside air contains a high concentration of particulate matter pollutants. Continuing to implement the target fresh air introduction strategy and introduce outside air into the vehicle under these circumstances would be tantamount to bringing polluted air into the cabin. While reducing carbon dioxide concentration, it introduces a new source of air pollution, posing another threat to the health of the occupants. Therefore, the target fresh air introduction strategy should be immediately stopped, and the introduction of outside air should be suspended. Simultaneously, if the target vehicle is equipped with an in-vehicle air purification module, the system will automatically activate the module, using a circulating filtration method to purify the air inside the vehicle through internal circulation, continuously reducing the concentration of particulate matter inside the vehicle while isolating external pollutants.

[0073] Furthermore, once it is determined that the PM2.5 concentration P_out outside the vehicle has dropped to a safe level (i.e. below the upper limit of the safe threshold, such as below 35 μg / m³), it can be determined that the external air quality has recovered to a state that meets the preset quality requirements. At this time, the execution of the target fresh air introduction strategy will be automatically resumed to reintroduce fresh external air to reduce the carbon dioxide concentration in the rear passenger compartment.

[0074] When the front air conditioning unit of the target vehicle is forced to operate in recirculation mode, the recirculation damper of the rear air conditioning unit of the target vehicle is closed / opened in a pulse manner, and the external fresh air is introduced by micro-backflow through the body pressure relief valve to alleviate the situation where the current carbon dioxide concentration is higher than or equal to the first concentration threshold.

[0075] Specifically, coordination constraints with the front air conditioning unit also need to be addressed. In some situations, such as user-defined settings, the front air conditioning unit of the target vehicle is forced to operate in recirculation mode. In this case, the front air conditioning unit's external recirculation strategy in the low-speed range cannot be executed because user settings have the highest priority, and the system cannot arbitrarily switch the front air conditioning unit to external recirculation mode against the user's intention.

[0076] Under the restricted condition that the front air conditioner box is forced into the internal circulation mode, the rear air conditioner box enters the emergency ventilation mode. That is to say, by pulse closing / opening the circulation damper of the rear air conditioner box of the target vehicle, the micro reverse osmosis effect of the vehicle body pressure relief valve is utilized to introduce external fresh air. The specific principle is as follows: when the circulation damper of the rear air conditioner box is briefly closed, an instantaneous low pressure is generated at the air inlet of the blower. This low pressure fluctuation passes through the gap of the vehicle body pressure relief valve, pulling a very small amount of external air to reverse infiltrate into the rear compartment. Subsequently, the circulation damper is reopened, and this trace amount of fresh air is incorporated into the rear air conditioning circulation circuit. By repeatedly performing this closing / opening action on the circulation damper of the rear air conditioner box in a pulsed manner, it is possible to introduce a limited but continuous trace amount of fresh air into the rear compartment without turning on the external circulation of the front air conditioner and without violating the user's settings. Although the ventilation volume is less than the normal strategy, it can effectively alleviate the serious over-standard situation where the current carbon dioxide concentration is higher than or equal to the first concentration threshold. As an emergency compensation mechanism, this method can ensure the basic breathing safety of the rear passengers.

[0077] As an optional embodiment, like the method described above, the method further includes at least one of the following: Maintain the internal circulation of the rear air conditioner box when the current carbon dioxide concentration is lower than the first concentration threshold.

[0078] That is to say, after obtaining the current carbon dioxide concentration value C in the rear compartment, it is first compared with the first concentration threshold C_th1. When the current carbon dioxide concentration is lower than the first concentration threshold, that is, C < C_th1, it indicates that the air quality in the rear compartment is in a good and healthy level, and the carbon dioxide concentration is far from reaching the dangerous limit that requires triggering ventilation intervention. At this time, the air environment in the rear compartment can fully meet the normal breathing needs of the occupants, and there is no need to start any form of fresh air introduction strategy.

[0079] Within this safe concentration range, stop performing subsequent operations. The so-called subsequent operations refer to a series of fresh air introduction strategies described above and their related vehicle speed judgment, strategy selection, execution duration calculation, etc. Do not perform any active intervention on the air conditioning system, but maintain the current internal circulation state of the rear air conditioner box, and let the vehicle air conditioning system continue to operate according to the user's original settings or the system default state.

[0080] Thus, through the method of this embodiment, it is possible to avoid disturbing the in-vehicle air flow environment due to unnecessary mode switching, and save the additional energy consumption generated by frequently starting the external circulation or adjusting the blower speed, achieving the purpose of energy conservation.

[0081] If the current carbon dioxide concentration is below the first concentration threshold, determine the upward trend of the current carbon dioxide concentration. If the upward trend is higher than or equal to the preset concentration increase threshold, obtain the current speed of the target vehicle; determine the target fresh air introduction strategy corresponding to the current vehicle speed; determine the target execution duration of the target fresh air introduction strategy according to the current carbon dioxide concentration, and execute the target fresh air introduction strategy according to the target execution duration to reduce the carbon dioxide concentration in the rear passenger compartment.

[0082] Specifically, simply relying on the static judgment that the current carbon dioxide concentration is below the first concentration threshold is insufficient to completely eliminate the potential risk of impending deterioration in the air quality of the rear passenger compartment. Carbon dioxide concentration is a dynamically changing physical quantity. In some scenarios, although the current concentration value may be within a safe range, its upward trend indicates that the concentration will soon exceed the threshold. For example, when a vehicle has just been loaded with multiple passengers and the doors and windows are closed, and the air conditioning is in recirculation mode, the carbon dioxide concentration in the rear seats may not yet have reached the first concentration threshold (e.g., 800 ppm), but it is rising at an extremely rapid rate. If this is not anticipated and intervention is not taken in advance, the effect of the fresh air introduction strategy will be significantly delayed once the concentration actually exceeds the standard. To address this potential risk, when the current carbon dioxide concentration is below the first concentration threshold, the method in this embodiment further determines the upward trend of the current carbon dioxide concentration. This upward trend is obtained by performing time series analysis on carbon dioxide concentration data obtained from continuous sampling, reflecting the rate of change of concentration over a recent period, and can be expressed in ppm / min. After obtaining the upward trend, it can be compared with a preset concentration rise threshold. If the upward trend in carbon dioxide concentration is higher than or equal to a preset concentration increase threshold, it is determined that although the current air quality is acceptable, at the current rate of deterioration, the carbon dioxide concentration in the rear passenger compartment will approach or even exceed the first concentration threshold within a short period of time. Therefore, early intervention is necessary, and the rear passenger compartment should be ventilated. In this case, the current speed of the target vehicle can be obtained, and the following steps can be taken: determine the target fresh air introduction strategy corresponding to the current speed; determine the target execution duration of the target fresh air introduction strategy based on the current carbon dioxide concentration, and execute the target fresh air introduction strategy according to the target execution duration to reduce the carbon dioxide concentration in the rear passenger compartment.

[0083] By using the method in this embodiment, the rising carbon dioxide concentration can be intervened in advance based on the prediction of the upward trend, which can further protect the respiratory health and riding comfort of passengers in the rear compartment. At the same time, it can also avoid the situation of excessively high concentration and slow concentration reduction caused by the delayed activation of the strategy.

[0084] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0085] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM (Read-Only Memory) / RAM (Random Access Memory), magnetic disk, optical disk), and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0086] According to another aspect of the embodiments of this application, an in-vehicle fresh air introduction device for implementing the above-described in-vehicle fresh air introduction method is also provided. Figure 3 This is a structural block diagram of an optional in-vehicle fresh air introduction device according to an embodiment of this application, such as... Figure 3 As shown, the device may include: Concentration acquisition module 31 is used to acquire the current carbon dioxide concentration in the rear passenger compartment, wherein the rear passenger compartment is located in the target vehicle; The vehicle speed acquisition module 32 is used to acquire the current vehicle speed of the target vehicle when the current carbon dioxide concentration is higher than or equal to a first concentration threshold. Strategy determination module 33 is used to determine the target fresh air introduction strategy corresponding to the current vehicle speed; The execution module 34 is used to determine the target execution duration of the target fresh air introduction strategy based on the current carbon dioxide concentration, and execute the target fresh air introduction strategy according to the target execution duration to reduce the carbon dioxide concentration in the rear passenger compartment.

[0087] It should be noted that the concentration acquisition module 31 in this embodiment can be used to perform the above step S202, the vehicle speed acquisition module 32 in this embodiment can be used to perform the above step S204, the strategy determination module 33 in this embodiment can be used to perform the above step S206, and the execution module 34 in this embodiment can be used to perform the above step S208.

[0088] In addition to the modules described above, the apparatus in this embodiment may also include modules that perform any of the methods described in any of the foregoing embodiments of the in-vehicle fresh air introduction method.

[0089] It should be noted that the examples and application scenarios implemented by the above modules and corresponding steps are the same, but are not limited to the content disclosed in the above embodiments. It should also be noted that the above modules, as part of a device, can operate in environments such as... Figure 1 The hardware environment shown can be implemented through software or hardware, and the hardware environment includes the network environment.

[0090] According to another aspect of the embodiments of this application, an electronic device for implementing the above-described method for introducing fresh air into a vehicle is also provided. The electronic device may be a server, a terminal, or a combination thereof.

[0091] According to another embodiment of this application, an electronic device is also provided, comprising: Figure 4 As shown, the electronic device may include: a processor 1501, a communication interface 1502, a memory 1503, and a communication bus 1504, wherein the processor 1501, the communication interface 1502, and the memory 1503 communicate with each other through the communication bus 1504.

[0092] Memory 1503 is used to store computer programs; When processor 1501 executes the program stored in memory 1503, it performs the following steps: Step S202: Obtain the current carbon dioxide concentration in the rear passenger compartment, where the rear passenger compartment is located in the target vehicle.

[0093] Step S204: If the current carbon dioxide concentration is higher than or equal to the first concentration threshold, obtain the current speed of the target vehicle.

[0094] Step S206: Determine the target fresh air introduction strategy corresponding to the current vehicle speed.

[0095] Step S208: Based on the current carbon dioxide concentration, determine the target execution duration of the target fresh air introduction strategy, and execute the target fresh air introduction strategy according to the target execution duration to reduce the carbon dioxide concentration in the rear passenger compartment.

[0096] Optionally, in this embodiment, the communication bus can be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is used to represent it in the figure, but this does not mean that there is only one bus or one type of bus. The communication interface is used for communication between the aforementioned electronic device and other devices.

[0097] The memory may include random access memory (RAM) or non-volatile memory (NVM), such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0098] As an example, the memory 1503 may include, but is not limited to, the concentration acquisition module 31, vehicle speed acquisition module 32, strategy determination module 33, and execution module 34 of the aforementioned in-vehicle fresh air introduction device. Furthermore, it may include, but is not limited to, other module units of the aforementioned in-vehicle fresh air introduction device, which will not be elaborated upon in this example.

[0099] The processor mentioned above can be a general-purpose processor, including but not limited to: CPU (Central Processing Unit), NP (Network Processor), etc.; it can also be DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0100] This application also provides a computer-readable storage medium, which includes a stored program, wherein the program executes the method steps of the above method embodiments when it runs.

[0101] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, ROMs, RAMs, portable hard drives, magnetic disks, or optical disks.

[0102] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0103] If the integrated units in the above embodiments are implemented as software functional units and sold or used as independent products, they can be stored in the aforementioned computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause one or more computer devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0104] According to another aspect of the embodiments of this application, a vehicle is also provided, including the electronic equipment described in the foregoing embodiments.

[0105] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0106] In the several embodiments provided in this application, it should be understood that the disclosed client can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection between units or modules, and may be electrical or other forms.

[0107] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the solution provided in this embodiment, depending on actual needs.

[0108] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0109] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for introducing fresh air into a vehicle, characterized in that, include: Obtain the current carbon dioxide concentration in the rear passenger compartment, wherein the rear passenger compartment is located in the target vehicle; If the current carbon dioxide concentration is higher than or equal to a first concentration threshold, the current speed of the target vehicle is obtained; Determine the target fresh air introduction strategy corresponding to the current vehicle speed; Based on the current carbon dioxide concentration, the target execution duration of the target fresh air introduction strategy is determined, and the target fresh air introduction strategy is executed according to the target execution duration to reduce the carbon dioxide concentration in the rear passenger compartment.

2. The method according to claim 1, characterized in that, The determination of the target fresh air introduction strategy corresponding to the current vehicle speed includes: When the current vehicle speed is determined to be less than a preset speed limit, a first fresh air introduction strategy is obtained that includes only control mode 1 or both control mode 1 and control mode 2. The target fresh air introduction strategy includes the first fresh air introduction strategy. The control method 1 includes: controlling the front air conditioning unit of the target vehicle to operate in external circulation mode, drawing fresh air into the front passenger compartment, causing the air in the passenger compartment to flow from the front passenger compartment to the rear passenger compartment, and discharging the air in the rear passenger compartment through the pressure relief valve at the rear of the vehicle body, wherein the passenger compartment includes the front passenger compartment and the rear passenger compartment. The control method 2 includes: increasing the speed of the front blower.

3. The method according to claim 1, characterized in that, The determination of the target fresh air introduction strategy corresponding to the current vehicle speed includes: When the current vehicle speed is determined to be greater than or equal to a preset speed limit, a second fresh air introduction strategy is obtained that includes only control mode 3 or both control mode 3 and control mode 4. The target fresh air introduction strategy includes the second fresh air introduction strategy. The control method 3 includes: using inertial pressure to force fresh air from the rear of the target vehicle into the target vehicle through the pressure relief valve gap and / or air intake channel, maintaining the rear air conditioning unit of the target vehicle in internal circulation mode, so as to use the low pressure fluctuation generated by the air intake of the rear blower to draw the fresh air that has entered the rear of the target vehicle to the circulation of the rear air conditioning unit, thereby accelerating the ventilation of the rear passenger compartment; The control method 4 includes: maintaining the closed duration of the recirculation damper of the rear air conditioning unit for a preset duration, and then opening the recirculation damper.

4. The method according to claim 1, characterized in that, The determination of the target fresh air introduction strategy corresponding to the current vehicle speed includes: When the current vehicle speed is determined to be greater than or equal to a preset lower speed limit and less than a preset upper speed limit, the target fresh air introduction strategy is obtained as follows; Either the first fresh air introduction strategy or the second fresh air introduction strategy is used as the target fresh air introduction strategy, wherein the first fresh air introduction strategy is a fresh air introduction strategy when the vehicle speed is less than a preset lower speed limit, and the second fresh air introduction strategy is a fresh air introduction strategy when the vehicle speed is greater than or equal to a preset upper speed limit; or... The current upward trend of carbon dioxide concentration in the rear passenger compartment is obtained. If the current upward trend is greater than or equal to a preset concentration increase threshold, the first fresh air introduction strategy is adopted as the target fresh air introduction strategy. If the current upward trend is less than the preset concentration increase threshold, the second fresh air introduction strategy is adopted as the target fresh air introduction strategy.

5. The method according to claim 1, characterized in that, After executing the target fresh air introduction strategy according to the target execution duration, the method further includes: Step 1: Obtain the real-time carbon dioxide concentration in the rear passenger compartment; Step 2: If the real-time carbon dioxide concentration is determined to be lower than or equal to the second concentration threshold, exit the execution of the target fresh air introduction strategy according to the preset exit strategy, wherein the second concentration threshold is lower than the first concentration threshold; Step 3: Update the current carbon dioxide concentration using the real-time carbon dioxide concentration, and perform the following steps: Determine the target execution duration of the target fresh air introduction strategy based on the current carbon dioxide concentration, and execute the target fresh air introduction strategy according to the target execution duration; After the target fresh air introduction strategy has been executed for the target execution duration, proceed to Step 1.

6. The method according to claim 1, characterized in that, The step of determining the target execution duration of the target fresh air introduction strategy based on the current carbon dioxide concentration, and executing the target fresh air introduction strategy according to the target execution duration, includes: Obtain the number of occupants in the rear passenger compartment; if the number of occupants is greater than the preset upper limit of occupants, determine the ventilation frequency of the target fresh air introduction strategy according to the number of occupants, extend the target execution time to a specified execution time according to the number of occupants, and execute the target fresh air introduction strategy according to the specified execution time and ventilation frequency.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes at least one of the following: If the current carbon dioxide concentration is lower than the first concentration threshold, maintain the recirculation within the rear air conditioning unit; or If the current carbon dioxide concentration is lower than the first concentration threshold, determine the upward trend of the current carbon dioxide concentration. If the upward trend is higher than or equal to a preset concentration increase threshold, obtain the current speed of the target vehicle. Determine the target fresh air introduction strategy corresponding to the current speed. Based on the current carbon dioxide concentration, determine the target execution duration of the target fresh air introduction strategy and execute the target fresh air introduction strategy according to the target execution duration to reduce the carbon dioxide concentration in the rear passenger compartment.

8. A vehicle interior fresh air intake device, characterized in that, include: A concentration acquisition module is used to acquire the current carbon dioxide concentration in the rear passenger compartment, wherein the rear passenger compartment is located in the target vehicle; The vehicle speed acquisition module is used to acquire the current vehicle speed of the target vehicle when the current carbon dioxide concentration is higher than or equal to a first concentration threshold. The strategy determination module is used to determine the target fresh air introduction strategy corresponding to the current vehicle speed; The execution module is used to determine the target execution duration of the target fresh air introduction strategy according to the current carbon dioxide concentration, and execute the target fresh air introduction strategy according to the target execution duration to reduce the carbon dioxide concentration in the rear passenger compartment.

9. An electronic device comprising a processor, a communication interface, a memory, and a communication bus, wherein, The processor, the communication interface, and the memory communicate with each other via the communication bus, characterized in that... The memory is used to store computer programs; The processor is configured to perform the method of any one of claims 1 to 7 by running the computer program stored in the memory.

10. A vehicle, characterized in that, Including the electronic device as described in claim 9.

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