Automobile air conditioner circulating air door control method, device and equipment and storage medium

Abstract

The invention discloses an automobile air conditioner circulating air door control method, device and equipment and a storage medium, relates to the technical field of automobile air conditioner control, and discloses an automobile air conditioner circulating air door control method which comprises the steps that a current circulating mode of a circulating air door is obtained; when the current circulation mode is the internal circulation mode, the number of passengers in a passenger compartment is obtained, and a circulation mode switching time interval is determined according to the number of passengers in the passenger compartment; when the duration of maintaining the internal circulation mode reaches the circulation mode switching time interval, switching the circulation air door from the internal circulation mode to an external circulation mode, and determining the external circulation duration according to the current vehicle speed; and when the duration for maintaining the outer circulation mode reaches the outer circulation duration, the circulation air door is switched from the outer circulation mode to the inner circulation mode, and therefore control over the circulation air door of the automobile air conditioner is completed. According to the scheme, the ventilation opportunity can be accurately determined, and air conditioner energy consumption is reduced as much as possible while fresh air is introduced in time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile air conditioner control, in particular to an automobile air conditioner circulating air door control method, device, equipment and storage medium. BACKGROUND

[0002] When the vehicle is in the internal circulation mode for a long time, especially when there are many passengers in the vehicle, the carbon dioxide content gradually accumulates, and when its concentration exceeds a certain value, people will feel stuffy and their attention will decrease, and as the concentration continues to increase, people will feel dizzy and sleepy, thereby affecting the driving experience or driving safety.

[0003] Currently, the control of the automobile air conditioner circulating air door mainly relies on manual switching by the driver or automatic control based on simple environmental conditions (such as temperature). However, when manually switching, the human body has already reached the boundary of uncomfortable perception, and there is a ventilation lag; the automatic control only switches the circulating mode of the circulating air door according to the environmental temperature, and the ventilation timing may not match the needs of the passengers, and in extreme weather, external hot / cold air will be continuously introduced, causing the air conditioning system to work at high power frequently, increasing energy consumption. Therefore, how to accurately determine the ventilation timing to introduce fresh air in time while reducing air conditioning energy consumption as much as possible has become a problem to be solved.

[0004] The above content is only used to assist in understanding the technical solutions of the present application and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0005] The main purpose of the present application is to provide an automobile air conditioner circulating air door control method, device, equipment and storage medium, which aims to solve the technical problem of how to accurately determine the ventilation timing to introduce fresh air in time while reducing air conditioning energy consumption as much as possible.

[0006] To achieve the above-mentioned purpose, the present application provides an automobile air conditioner circulating air door control method, which comprises: obtaining the current circulating mode of the circulating air door; when the current circulating mode is the internal circulation mode, obtaining the number of passengers in the passenger compartment and determining the circulating mode switching time interval according to the number of passengers in the passenger compartment; when the duration of maintaining the internal circulation mode reaches the circulating mode switching time interval, switching the circulating air door from the internal circulation mode to the external circulation mode and determining the external circulation duration according to the current vehicle speed; when the duration of maintaining the external circulation mode reaches the external circulation duration, switching the circulating air door from the external circulation mode to the internal circulation mode to complete the automobile air conditioner circulating air door control.

[0007] In one embodiment, the step of determining the cyclic mode switching time interval based on the number of passengers in the occupant cabin includes: Acquire information on preset carbon dioxide concentration, passenger cabin volume, and carbon dioxide exhalation rate; The time interval for switching between cyclic modes is determined based on the preset carbon dioxide concentration, the passenger cabin volume, the carbon dioxide exhalation rate, and the number of passengers in the passenger cabin.

[0008] In one embodiment, the step of determining the cycle mode switching time interval based on the preset carbon dioxide concentration, the passenger cabin volume, the carbon dioxide exhalation rate information, and the number of passengers in the passenger cabin includes: The increased carbon dioxide concentration is calculated based on the passenger cabin volume, the carbon dioxide exhalation rate, and the number of passengers in the passenger cabin. The time interval for switching the cycle mode is determined based on the preset carbon dioxide concentration and the increased carbon dioxide concentration.

[0009] In one embodiment, after the step of obtaining the current circulation mode of the recirculation damper, the method further includes: When the circulating damper control mode is in automatic mode, acquire thermal management status information, target air conditioning mode status, and air conditioning set temperature. When at least one of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meets the strong control conditions of the circulation damper, the target circulation mode is obtained. When the current circulation mode is not the target circulation mode, the circulation damper is switched from the current circulation mode to the target circulation mode to complete the control of the car air conditioning circulation damper.

[0010] In one embodiment, the step of obtaining the target circulation mode when at least one of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meets the strong control condition of the circulation damper includes: When any one of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meets the strong control conditions of the circulation damper, the target circulation mode is determined based on the met strong control conditions of the circulation damper. When at least two of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meet the strong control conditions for the circulating damper, the priority of the met strong control conditions for the circulating damper is obtained, and the target circulation mode is determined based on the priority.

[0011] In one embodiment, before the step of obtaining the target circulation mode when at least one of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meets the strong control condition of the circulation damper, the method further includes: When the thermal management status information triggers the hot air protection strategy, it is determined that the first external circulation strong control condition is met; When the air conditioner is set to the first target temperature, it is determined that the second external circulation strong control condition is met; When the air conditioner is set to the second target temperature, it is determined that the first internal circulation strong control condition is met, wherein the second target temperature is less than the first target temperature; When the target air conditioning mode is in the on state, it is determined that the second internal circulation strong control condition is met, wherein the priority of the first external circulation strong control condition is greater than the priority of the second external circulation strong control condition, the priority of the second external circulation strong control condition is equal to the priority of the first internal circulation strong control condition, and the priority of the first internal circulation strong control condition is greater than the priority of the second internal circulation strong control condition.

[0012] In one embodiment, after the step of acquiring thermal management status information, target air conditioning mode status, and air conditioning set temperature when the circulating damper control mode is in automatic mode, the method further includes: When the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature do not meet the strong control conditions of the circulating damper are obtained, the ambient temperature and the current air conditioning mode are acquired. The current circulation mode of the circulating damper is controlled according to the ambient temperature and the current air conditioning mode.

[0013] Furthermore, to achieve the above objectives, this application also proposes an automotive air conditioning recirculation damper control device, which includes: The data acquisition module is used to obtain the current circulation mode of the circulating damper; The data processing module is used to obtain the number of passengers in the cabin when the current loop mode is the inner loop mode, and to determine the loop mode switching time interval based on the number of passengers in the cabin. The circulation control module is used to switch the circulation damper from the internal circulation mode to the external circulation mode when the duration of maintaining the internal circulation mode reaches the circulation mode switching time interval, and to determine the duration of external circulation based on the current vehicle speed. The circulation control module is also used to switch the circulation damper from the external circulation mode to the internal circulation mode when the duration of maintaining the external circulation mode reaches the duration of the external circulation, so as to complete the control of the car air conditioning circulation damper.

[0014] In addition, to achieve the above objectives, this application also proposes an automotive air conditioning recirculation damper control device, the device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the automotive air conditioning recirculation damper control method described above.

[0015] In addition, to achieve the above objectives, this application also proposes a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the automotive air conditioning circulating damper control method described above.

[0016] In addition, to achieve the above objectives, this application also provides a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the automotive air conditioning recirculation damper control method described above.

[0017] One or more technical solutions proposed in this application have at least the following technical effects: By acquiring the current circulation mode of the recirculation damper, and when the current circulation mode is internal circulation mode, the time interval for switching circulation modes is determined based on the number of passengers in the passenger compartment. Ventilation is proactively triggered before the carbon dioxide concentration inside the vehicle reaches an uncomfortable threshold, solving the problem of ventilation lag. The duration of external circulation is dynamically adjusted according to the current vehicle speed, fully considering the differences in the impact wind effect at different speeds. This ensures sufficient introduction of fresh air while avoiding high-power operation of the air conditioning system due to excessively long external circulation time, reducing energy consumption (fuel or electricity consumption) and minimizing fluctuations in the vehicle's interior temperature. When the duration of maintaining the external circulation mode reaches the specified external circulation duration, the external circulation mode is promptly switched back to internal circulation mode to ensure that the interior temperature remains within a comfortable range, avoiding temperature runaway problems caused by prolonged external circulation. In this way, during internal circulation operation, the deterioration trend of the air quality inside the vehicle is proactively predicted, and the timing and duration of ventilation are intelligently decided and executed. This effectively maintains fresh air inside the vehicle before passengers experience discomfort, while minimizing the negative impact on interior temperature stability and air conditioning system energy consumption. 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 flowchart illustrating an embodiment of the automotive air conditioning recirculation damper control method of this application. Figure 2This is a flowchart illustrating Embodiment 2 of the automotive air conditioning recirculation damper control method of this application; Figure 3 This is a schematic diagram of the control logic of the circulating air damper in the automatic control mode of the automotive air conditioning circulating air damper control method provided in Embodiment 2 of this application; Figure 4 This is a schematic diagram of the module structure of the automotive air conditioning recirculation damper control device according to an embodiment of this application; Figure 5 This is a schematic diagram of the equipment structure of the hardware operating environment involved in the automotive air conditioning circulating damper control method in the embodiments of this application.

[0021] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0023] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The main solution of this application embodiment is: to obtain the current circulation mode of the recirculation damper; when the current circulation mode is the inner circulation mode, to obtain the number of passengers in the passenger compartment, and to determine the circulation mode switching time interval based on the number of passengers in the passenger compartment; when the duration of maintaining the inner circulation mode reaches the circulation mode switching time interval, to switch the recirculation damper from the inner circulation mode to the outer circulation mode, and to determine the outer circulation duration based on the current vehicle speed; when the duration of maintaining the outer circulation mode reaches the outer circulation duration, to switch the recirculation damper from the outer circulation mode to the inner circulation mode, so as to complete the control of the vehicle air conditioning recirculation damper.

[0025] Currently, the control of automotive air conditioning recirculation dampers primarily relies on manual switching by the driver or automatic control based on simple environmental conditions (such as temperature). However, manual switching occurs when the human body has already reached the boundary of discomfort perception, resulting in ventilation lag. Automatic control only switches the recirculation mode of the damper based on ambient temperature, which may not match the ventilation timing with the needs of the occupants. Furthermore, in extreme weather conditions, it can continuously introduce hot / cold outside air, causing the air conditioning system to operate at high power frequently, increasing energy consumption. Therefore, accurately determining the ventilation timing to introduce fresh air in a timely manner while minimizing air conditioning energy consumption remains a problem to be solved.

[0026] This application provides a solution that, by acquiring the current circulation mode of the recirculation damper, and when the current circulation mode is internal circulation mode, determines the circulation mode switching time interval based on the number of passengers in the cabin. It proactively triggers ventilation before the carbon dioxide concentration inside the vehicle reaches an uncomfortable threshold, solving the problem of ventilation lag. The duration of external circulation is dynamically adjusted according to the current vehicle speed, fully considering the differences in the impact wind effect at different speeds. This ensures sufficient introduction of fresh air while avoiding high-power operation of the air conditioning system due to excessively long external circulation time, reducing energy consumption (fuel or electricity consumption) and minimizing fluctuations in the vehicle's interior temperature. When the duration of maintaining the external circulation mode reaches the specified external circulation duration, the external circulation mode is promptly switched back to internal circulation mode to ensure that the interior temperature remains within a comfortable range, avoiding temperature runaway problems caused by prolonged external circulation. In this way, during internal circulation operation, the deterioration trend of the air quality inside the vehicle is proactively predicted, and the timing and duration of ventilation are intelligently decided and executed. This effectively maintains fresh air inside the vehicle before passengers experience discomfort, while minimizing negative impacts on interior temperature stability and air conditioning system energy consumption.

[0027] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, or mobile phone, or an electronic device capable of performing the above functions, such as an automotive air conditioning recirculation damper control device. The following description uses an automotive air conditioning recirculation damper control device as an example to illustrate this embodiment and the subsequent embodiments.

[0028] Based on this, embodiments of this application provide a method for controlling the circulating air damper of an automotive air conditioning system, referring to... Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the automotive air conditioning recirculation damper control method of this application.

[0029] In this embodiment, the automotive air conditioning recirculation damper control method includes steps S10 to S40: Step S10: Obtain the current circulation mode of the circulation damper; It should be noted that the recirculation damper is a core component in the automotive air conditioning system used to switch air circulation modes, and its working state determines the flow of air between the inside and outside of the vehicle. The current circulation mode refers to the current working state of the recirculation damper, which includes two modes: internal recirculation mode and external recirculation mode.

[0030] The internal recirculation mode closes the airflow channel between the vehicle's interior and exterior, only cooling, heating, or recirculating the existing air inside the vehicle. This mode is suitable for scenarios requiring rapid temperature adjustment inside the vehicle or where outside air quality is poor. The external recirculation mode opens the airflow channel between the vehicle's interior and exterior, introducing outside air into the vehicle and then regulating its temperature. This mode is suitable for scenarios with good outside air quality or where fresh air needs to be introduced.

[0031] It should be understood that the recirculation damper of a car's air conditioning system controls its position via a sliding resistor. The two target positions, internal and external recirculation modes, correspond to different standard voltage values. The current recirculation mode of the damper can be determined by detecting the feedback voltage output by the sliding resistor. The feedback voltage is the voltage signal output by the sliding resistor, which is linked to the damper's position; different recirculation modes correspond to fixed feedback voltage ranges.

[0032] Specifically, the sliding resistor is mechanically connected to the circulation damper. Table 1 shows the correspondence between the circulation damper state and the feedback voltage. As shown in Table 1, when the circulation damper is in internal circulation mode, the feedback voltage output by the sliding resistor is 0.8V±0.1V; when the circulation damper is in external circulation mode, the feedback voltage output by the sliding resistor is 4.8V±0.1V. Here, 0.8V represents full internal circulation, and 4.8V represents full external circulation.

[0033] Table 1

[0034] Step S20: When the current cycle mode is the inner cycle mode, obtain the number of passengers in the cabin and determine the cycle mode switching time interval based on the number of passengers in the cabin. It should be noted that the number of passengers in the passenger compartment refers to the number of people currently sitting in the passenger compartment of the car. The number of people directly affects the rate of carbon dioxide production inside the car. The more people there are, the more carbon dioxide is produced per unit time, and the faster the air quality inside the car deteriorates.

[0035] In addition, the cycle mode switching time interval refers to the length of time from the moment the number of passengers in the cabin is obtained when the current cycle mode is internal circulation mode, to the moment before the forced switch to external circulation mode. This is used to ensure that the external circulation ventilation is triggered in time before the carbon dioxide concentration in the vehicle reaches the threshold that affects driving comfort, while avoiding premature switching that would lead to increased energy consumption.

[0036] It should be understood that when the current circulation mode is detected to be the internal circulation mode, the number of passengers in the passenger compartment will be obtained. The number of passengers in the passenger compartment can be obtained through the number entered by the user on the vehicle's interactive interface, or through the occupant recognition devices on the vehicle, such as seat pressure sensors, camera recognition systems, etc. After obtaining the number of passengers in the passenger compartment, combined with other key parameters that affect the change of carbon dioxide concentration in the vehicle, the corresponding preset calculation logic can determine the circulation mode switching time interval.

[0037] In one feasible implementation, step S20, which involves determining the cyclic mode switching time interval based on the number of passengers in the occupant cabin, may include steps S21-S22: Step S21: Obtain preset carbon dioxide concentration, passenger cabin volume, and carbon dioxide exhalation rate information; It should be noted that the preset carbon dioxide concentration is a pre-set safe upper limit value for the carbon dioxide concentration inside the vehicle. This value is determined based on the physiological comfort and safety needs of the human body. If the concentration is exceeded, the driver and passengers may experience discomfort symptoms such as dizziness and drowsiness. It is necessary to control the carbon dioxide concentration in the passenger compartment within the preset carbon dioxide concentration. The preset carbon dioxide concentration can be 2500 ppm. This embodiment does not impose specific restrictions on this.

[0038] In addition, passenger compartment volume refers to the total volume of air that can be contained inside the passenger compartment of a car, measured in cubic meters. It is a basic parameter for calculating changes in carbon dioxide concentration inside the vehicle, and its value is determined during the vehicle design phase, making it a fixed parameter.

[0039] Additionally, the carbon dioxide exhalation rate information can be the volume of carbon dioxide exhaled per minute by an adult at rest, measured in milliliters. The value can be between 200 and 250 milliliters, reflecting the amount of carbon dioxide produced by a single occupant per unit time.

[0040] It should be understood that the preset carbon dioxide concentration is a fixed threshold pre-stored in the control logic and can be directly accessed; the passenger compartment volume is an inherent attribute parameter of the vehicle, extracted from the vehicle's design technical documents and stored for use during calculations; the carbon dioxide exhalation rate information is a standard value determined based on a large amount of human physiological experimental data, and is also pre-stored in the control logic. When it is necessary to determine the cycle mode switching interval, the pre-stored preset carbon dioxide concentration, passenger compartment volume, and carbon dioxide exhalation rate information can be retrieved.

[0041] Step S22: Determine the cycle mode switching time interval based on the preset carbon dioxide concentration, the passenger cabin volume, the carbon dioxide exhalation rate information, and the number of passengers in the passenger cabin.

[0042] It should be understood that the carbon dioxide concentration that increases within a certain period of time can be estimated based on the passenger cabin volume, carbon dioxide exhalation rate, and the number of passengers in the passenger cabin. Based on the estimated carbon dioxide concentration and the preset carbon dioxide concentration, the time required to reach the preset carbon dioxide concentration can be calculated, thus obtaining the cycle mode switching time interval.

[0043] In one feasible implementation, step S22 may include: The increased carbon dioxide concentration is calculated based on the passenger cabin volume, the carbon dioxide exhalation rate, and the number of passengers in the passenger cabin. The time interval for switching the cycle mode is determined based on the preset carbon dioxide concentration and the increased carbon dioxide concentration.

[0044] It should be noted that the increase in carbon dioxide concentration is the calculated increase in carbon dioxide concentration per unit time. The higher the value, the faster carbon dioxide accumulates inside the vehicle, and the sooner it is necessary to switch to external air circulation mode. The unit is parts per million (ppm), which is a dimensionless unit of concentration. The increase in carbon dioxide concentration directly reflects the current air quality inside the vehicle.

[0045] It should be noted that the difference between the preset carbon dioxide concentration and the increased carbon dioxide concentration reflects the concentration change space from the current state to the state where ventilation is required. The cycle mode switching time interval is calculated based on this concentration change space to determine the time node for triggering ventilation, ensuring timely ventilation when the concentration reaches an uncomfortable level for the human body.

[0046] It should be understood that the calculation first uses the number of passengers in the passenger compartment as a base, multiplied by the carbon dioxide exhalation rate information, i.e., the volume of carbon dioxide exhaled per minute by an adult in a resting state, to estimate the total amount of carbon dioxide produced by all passengers in the vehicle per unit time. Then, dividing the total amount of carbon dioxide produced by the passenger compartment volume, the increase in carbon dioxide concentration in the vehicle per unit time can be calculated, yielding the increased carbon dioxide concentration. Dividing the increased carbon dioxide concentration by the preset carbon dioxide concentration gives the time required for the carbon dioxide concentration to reach the target value from the current moment; this time is the cycle mode switching interval.

[0047] For example, increasing the carbon dioxide concentration Q CO2 The calculation formula is as follows: Q CO2 =K CO2 *N / V In the formula, K CO2 This represents the amount of carbon dioxide an adult exhales per minute while at rest; N represents the number of passengers in the cabin; and V represents the cabin volume.

[0048] Furthermore, the formula for calculating the cycle mode switching time interval t is as follows: t=T CO2 / Q CO2 In the formula, Q CO2 Indicates an increase in carbon dioxide concentration; T CO2 This indicates the preset carbon dioxide concentration, i.e., the target carbon dioxide concentration to be controlled.

[0049] Step S30: When the duration of maintaining the internal circulation mode reaches the circulation mode switching time interval, the circulation damper is switched from the internal circulation mode to the external circulation mode, and the duration of external circulation is determined according to the current vehicle speed. It should be noted that the duration of maintaining the internal circulation mode refers to the cumulative time that the circulation damper has been continuously in the internal circulation mode since the time interval for switching circulation modes was determined. This can be counted in real time by a timing device.

[0050] Additionally, the current vehicle speed refers to the current speed of the car, measured in kilometers per hour. This value is collected in real time by the vehicle's speed sensor. The rate at which fresh air enters the passenger compartment varies at different vehicle speeds.

[0051] Additionally, the external circulation duration refers to the fixed time that the external circulation mode is maintained after the circulation damper switches to external circulation mode. Its length needs to be adjusted according to the current vehicle speed to ensure that fresh air can be fully introduced to reduce the carbon dioxide concentration inside the vehicle.

[0052] Additionally, the impact wind effect refers to the effect of airflow actively impacting the vehicle body and entering the passenger compartment when the vehicle is moving. The higher the vehicle speed, the stronger the impact wind effect, the faster the fresh air enters the passenger compartment, and the shorter the required external circulation time. The lower the vehicle speed, the weaker the impact wind effect, the fresh air enters mainly by the suction force of the air conditioning fan, the slower the speed, and the longer the required external circulation time.

[0053] It should be understood that the timing device counts in real time the duration of the recirculation damper maintaining the internal circulation mode. When the duration reaches the circulation mode switching interval, a switching command is sent to the recirculation damper motor. The recirculation damper motor drives the recirculation damper to move from the position corresponding to the internal circulation mode to the position corresponding to the external circulation mode, completing the switch from the internal circulation mode to the external circulation mode. At this time, the air conditioning interface displays the external circulation mode.

[0054] Furthermore, after the switch is completed, the current vehicle speed is collected in real time by the vehicle speed sensor. The duration of external air circulation can be determined according to the preset correspondence between the current vehicle speed and the duration of external air circulation. Table 2 shows the correspondence between the current vehicle speed and the duration of external air circulation. As shown in Table 2, when the current vehicle speed is in the range of 0~30km / h, the duration of external air circulation is set to 150 seconds; when the current vehicle speed is in the range of 30~80km / h, the duration of external air circulation is set to 90 seconds; and when the current vehicle speed is greater than 80km / h, the duration of external air circulation is set to 40 seconds. This ensures that fresh air can be fully introduced at different vehicle speeds, while avoiding large fluctuations in the interior temperature caused by introducing too much external air.

[0055] Table 2

[0056] Step S40: When the duration of maintaining the external circulation mode reaches the duration of the external circulation, the circulation damper is switched from the external circulation mode to the internal circulation mode to complete the control of the car air conditioning circulation damper.

[0057] It should be noted that the duration of maintaining external circulation mode refers to the cumulative time spent in external circulation mode from the moment the recirculation damper switches to external circulation mode, which can be counted in real time by a timing device. Switching to internal circulation mode means that the recirculation damper moves from the position corresponding to external circulation mode to the position corresponding to internal circulation mode, restoring the closed circulation of air inside the vehicle, ensuring that the temperature inside the vehicle can continue to be maintained within a comfortable range, and avoiding increased energy consumption due to prolonged external circulation.

[0058] It should be understood that after the recirculation damper switches to external circulation mode, the timing device begins to count the duration of maintaining external circulation mode and compares this duration with the external circulation duration in real time. When the duration of maintaining external circulation mode reaches the external circulation duration, a switching command is sent to the recirculation damper motor. The recirculation damper motor drives the recirculation damper to move from the position corresponding to external circulation mode to the position corresponding to internal circulation mode. At this time, the air conditioning interface resumes displaying internal circulation mode. This completes one intelligent control process from internal circulation to external circulation and back to internal circulation. Afterward, it will return to the steps of obtaining the number of passengers in the passenger compartment when the current circulation mode is internal circulation mode, and determining the circulation mode switching time interval based on the number of passengers in the passenger compartment, continuously controlling the recirculation damper to ensure that the carbon dioxide concentration inside the vehicle is always within a comfortable range.

[0059] This embodiment provides a method for controlling the recirculation damper of an automotive air conditioning system. By acquiring the current recirculation mode of the damper, and when the current recirculation mode is internal recirculation mode, the method determines the recirculation mode switching time interval based on the number of passengers in the passenger compartment. It proactively triggers ventilation before the carbon dioxide concentration inside the vehicle reaches an uncomfortable threshold, solving the problem of ventilation lag. The method dynamically adjusts the duration of external recirculation based on the current vehicle speed, fully considering the differences in the impact wind effect at different speeds. This ensures sufficient introduction of fresh air while avoiding high-power operation of the air conditioning system due to excessively long external recirculation time, reducing energy consumption (fuel or electricity consumption) and minimizing temperature fluctuations inside the vehicle. When the duration of maintaining the external recirculation mode reaches the specified duration, the method promptly switches back to internal recirculation mode, ensuring that the temperature inside the vehicle remains within a comfortable range and avoiding temperature runaway problems caused by prolonged external recirculation. In this way, during internal recirculation operation, the method proactively predicts the deterioration trend of air quality inside the vehicle and intelligently decides and executes ventilation and ventilation timing and duration, effectively maintaining fresh air inside the vehicle before passengers experience discomfort, while minimizing negative impacts on temperature stability and air conditioning system energy consumption.

[0060] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to that in Embodiment 1 above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 2 After step S10, the automotive air conditioning recirculation damper control method further includes steps A10 to A30: Step A10: When the circulating damper control mode is in automatic mode, acquire thermal management status information, target air conditioning mode status, and air conditioning set temperature. It should be noted that the recirculation damper control mode refers to the method of adjusting the working state of the recirculation damper, including manual control mode and automatic control mode. The switching logic and triggering conditions of the recirculation damper are different in different modes. In manual control mode, internal and external circulation are controlled manually by adjusting the internal and external circulation buttons on the large screen air conditioning interface or the panel. When the current circulation mode is internal circulation, pressing the circulation button switches the circulation mode to external circulation; when the current circulation mode is external circulation, pressing the circulation button switches the circulation mode to internal circulation. In automatic control mode, the position of the recirculation damper motor is controlled according to the ambient temperature and air conditioning mode.

[0061] Additionally, thermal management status information is core data reflecting the operating status of the vehicle's thermal management system, including whether the thermal management system has triggered various protection strategies and the operating status of components. The target air conditioning mode status refers to the activation status of the maximum cooling mode, which is the operating mode of the air conditioning system running at peak cooling power, designed to quickly reduce the temperature inside the vehicle. The air conditioning set temperature is the target temperature inside the vehicle set by the driver and passengers through the air conditioning control panel or the large-screen air conditioning interface.

[0062] It should be understood that when the circulating damper control mode is in automatic mode, the thermal management status information can be collected in real time by the sensors of the thermal management system, processed by the controller and output to reflect the operating status of the thermal management system; the target air conditioning mode status can be obtained by detecting the air conditioning control command to determine whether the user has issued an operation to activate the maximum cooling mode; the air conditioning set temperature can be obtained by reading the set value on the air conditioning control interface.

[0063] In one possible implementation, after step A10, the following may also be included: When the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature do not meet the strong control conditions of the circulating damper are obtained, the ambient temperature and the current air conditioning mode are acquired. The current circulation mode of the circulating damper is controlled according to the ambient temperature and the current air conditioning mode.

[0064] It should be noted that ambient temperature refers to the actual temperature of the external natural environment of the vehicle, and its changes directly affect the cooling or heating load of the air conditioning system. The current air conditioning mode is the actual operating mode of the air conditioning system, including types such as passenger compartment cooling and cooling dehumidification, with different modes corresponding to different temperature adjustment targets.

[0065] It should be understood that when the thermal management status information, target air conditioning mode status, and air conditioning set temperature do not meet any of the strict control conditions for the recirculation damper, the recirculation damper enters the normal automatic control mode. The ambient temperature is collected in real time by a temperature sensor deployed outside the vehicle, and the operating commands of the air conditioning system are read to obtain the current air conditioning mode. Then, the recirculation mode is adjusted according to the preset normal control logic: if the current air conditioning mode is passenger compartment cooling or cooling / dehumidification, the recirculation state is automatically set to internal recirculation mode to reduce the introduction of hot air from outside the vehicle and improve cooling efficiency; if the ambient temperature is higher than the preset internal recirculation start temperature, such as 26°C, the recirculation state is set to internal recirculation mode to avoid the high-temperature outside air affecting the cooling effect inside the vehicle; if the ambient temperature is lower than the preset external recirculation start temperature, such as 24°C, the recirculation state is set to external recirculation mode to introduce fresh air from outside the vehicle and adjust its temperature. The preset external circulation start temperature is lower than the preset internal circulation start temperature. The ambient temperature is between the preset internal circulation start temperature and the preset external circulation start temperature, such as between 24°C and 26°C, which is the hysteresis range. At this time, the circulation damper remains unchanged to avoid frequent switching of circulation mode due to small fluctuations in ambient temperature, thus ensuring stable in-vehicle temperature and improving driving comfort.

[0066] Step A20: When at least one of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meets the strong control condition of the circulation damper, obtain the target circulation mode; It should be noted that the forced control condition of the circulating damper is a pre-set specific operating condition standard used to forcibly change the working state of the circulating damper. It is used to break through the conventional control logic under special operating conditions and prioritize meeting the system protection requirements or the extreme temperature requirements of the drivers and passengers.

[0067] In addition, the target circulation mode is the final working state that the circulation damper must switch to, determined according to the met strict control conditions. It includes two types: internal circulation mode and external circulation mode. Its determination must strictly follow the rules and priority order corresponding to the strict control conditions.

[0068] In addition, the priority of the strong control conditions of the circulating damper is the order of activation set to resolve the logical conflicts when multiple strong control conditions are met at the same time. The priority is divided according to the urgency and importance of the working conditions, so as to ensure that the circulation mode that best meets the core needs can be accurately selected in complex working conditions.

[0069] It should be understood that the process of determining the target circulation mode is initiated when at least one of the following conditions—thermal management status, target air conditioning mode status, and air conditioning set temperature—meets the strict control conditions for the recirculation damper. If only one strict control condition is met, priority is not considered; the target circulation mode is directly locked based on the circulation mode corresponding to that condition. If two or three strict control conditions are met simultaneously, the priority of each condition must be extracted first, and the effective conditions are selected in descending order of priority. The target circulation mode is then determined based on these effective conditions to avoid confusion in circulation mode selection due to multiple conflicting conditions and to ensure that core needs are met first.

[0070] In one possible implementation, before step A20, the following may also be included: When the thermal management status information triggers the hot air protection strategy, it is determined that the first external circulation strong control condition is met; When the air conditioner is set to the first target temperature, it is determined that the second external circulation strong control condition is met; When the air conditioner is set to the second target temperature, it is determined that the first internal circulation strong control condition is met, wherein the second target temperature is less than the first target temperature; When the target air conditioning mode is in the on state, it is determined that the second internal circulation strong control condition is met, wherein the priority of the first external circulation strong control condition is greater than the priority of the second external circulation strong control condition, the priority of the second external circulation strong control condition is equal to the priority of the first internal circulation strong control condition, and the priority of the first internal circulation strong control condition is greater than the priority of the second internal circulation strong control condition.

[0071] It should be noted that the first external circulation strong control condition is a strong control condition set based on the protection requirements of the thermal management system. When the hot air protection strategy is triggered, the circulation state must be forcibly set to external circulation. Therefore, this condition has the highest priority. Its purpose is to introduce relatively low-temperature air from outside the vehicle to assist the thermal management system in cooling down, avoid damage to components due to overheating, and ensure the safe operation of the system.

[0072] In addition, the second external circulation strong control condition is a strong control condition set based on the extreme heating needs of the driver and passengers. The first target temperature refers to the highest set temperature of the air conditioner, such as 33°C. When the air conditioner is set to the highest set temperature, it means that the driver and passengers need to quickly increase the temperature inside the vehicle. At this time, forced external circulation can introduce outside air and heat it to meet the extreme heating needs, and it is set as the second highest priority.

[0073] In addition, the first internal circulation strong control condition is a strong control condition set based on the extreme cooling needs of the driver and passengers. The second target temperature refers to the lowest set temperature of the air conditioner, such as 17°C. When the air conditioner is set to the lowest set temperature, the driver and passengers need to quickly lower the temperature inside the vehicle. Forced internal circulation can reduce the introduction of hot air from outside the vehicle and improve cooling efficiency. Its priority is equal to that of the second external circulation strong control condition, both serving the extreme temperature needs of the driver and passengers.

[0074] In addition, the second internal circulation strong control condition is a strong control condition set based on the normal maximum cooling demand. The target air conditioner mode is in the on state, that is, the maximum cooling is on. At this time, forced internal circulation can ensure the cooling effect. Its urgency is lower than the extreme temperature demand and the system protection demand, and its priority is the lowest.

[0075] It should be understood that when the thermal management status information detects the hot air protection strategy being triggered, the first external circulation strong control condition is met; when the air conditioning set temperature is adjusted to the highest set temperature, the second external circulation strong control condition is met; when the air conditioning set temperature is adjusted to the lowest set temperature, the first internal circulation strong control condition is met; and when the target air conditioning mode status is detected as on (i.e., maximum cooling mode is activated), the second internal circulation strong control condition is met. The priority order is: first external circulation strong control condition > second external circulation strong control condition = first internal circulation strong control condition > second internal circulation strong control condition, ensuring that system protection requirements and the core temperature requirements of passengers are prioritized for satisfaction.

[0076] In one possible implementation, step A20 may include: When any one of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meets the strong control conditions of the circulating damper, the target circulation mode is determined based on the met strong control conditions of the circulating damper. When at least two of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meet the strong control conditions for the circulating damper, the priority of the met strong control conditions for the circulating damper is obtained, and the target circulation mode is determined based on the priority.

[0077] It should be noted that any one of the following three conditions must meet the strict control conditions of the circulating damper: thermal management status information, target air conditioning mode status, and air conditioning set temperature. In this case, there is no logical conflict, and the target circulating mode can be determined directly based on the circulating mode corresponding to the strict control condition, ensuring that the demand for a single special working condition is responded to quickly.

[0078] Additionally, meeting at least two of the strict control conditions for the circulating damper means that two or three of the three conditions simultaneously meet different strict control conditions. In this case, different strict control conditions may correspond to different circulation modes, resulting in demand conflicts. These conflicts need to be resolved through priority rules to ensure that the core demands with higher priority are met first.

[0079] In addition, the priority of the strong control conditions of the circulating damper is a fixed rule that is set in advance. It is based on the urgency and importance of the working conditions. The system protection requirements have a higher priority than the user temperature requirements, and the user's extreme temperature requirements have a higher priority than the normal temperature requirements, so as to ensure that the priority rules are scientific and reasonable.

[0080] It should be understood that when only one of the strict control conditions is met, the corresponding circulation mode is directly matched: if the first external circulation strict control condition is met, i.e., the thermal management status information triggers the hot air protection strategy, the target circulation mode is determined to be the external circulation mode; if the second external circulation strict control condition is met, i.e., the air conditioner set temperature is the first target temperature, the target circulation mode is determined to be the external circulation mode; if the first internal circulation strict control condition is met, i.e., the air conditioner set temperature is the second target temperature, the target circulation mode is determined to be the internal circulation mode; if the second internal circulation strict control condition is met, i.e., the target air conditioner mode status is on, i.e., maximum cooling is on, the target circulation mode is determined to be the internal circulation mode.

[0081] Furthermore, when at least two strong control conditions are met simultaneously, the priority of each condition is first extracted. Following the rule that the first outer loop strong control condition has a higher priority than the second outer loop strong control condition, the second outer loop strong control condition has the same priority as the first inner loop strong control condition, and the first inner loop strong control condition has a higher priority than the second inner loop strong control condition, the highest priority strong control condition is selected. Then, the target loop pattern is determined based on the loop pattern corresponding to this condition. For example, if both the first outer loop strong control condition and the second inner loop strong control condition are met, the target loop pattern is the outer loop pattern because the first outer loop strong control condition has a higher priority.

[0082] Step A30: When the current circulation mode is not the target circulation mode, switch the circulation damper from the current circulation mode to the target circulation mode to complete the control of the car air conditioning circulation damper.

[0083] It should be understood that after determining the target circulation mode, the first step is to check whether the current circulation mode matches the target circulation mode by detecting the feedback voltage of the sliding resistor. If they match, it means that the circulation damper is in a state that meets the requirements, and the current mode can be maintained. If they do not match, a switching command is immediately sent to the circulation damper motor, which drives the damper to move until the feedback voltage output by the sliding resistor reaches the standard voltage range corresponding to the target circulation mode. At this point, the circulation damper has successfully switched to the target circulation mode, the forced control logic has been executed, and the forced control of the circulation damper has been completed.

[0084] For example, please refer to Figure 4 , Figure 4 This is a schematic diagram of the control logic for the recirculating air damper in the automatic control mode of the automotive air conditioning recirculating air damper control method provided in Embodiment 2 of this application. Figure 4 As shown, when the air conditioning is at its maximum cooling capacity, the air conditioning set temperature is at its lowest temperature, the air conditioning mode is passenger compartment cooling or cooling / dehumidification, or the ambient temperature is >26℃, the recirculation damper is in internal circulation mode. When the ambient temperature is <24℃, the air conditioning set temperature is at its highest temperature, or the hot air protection strategy is triggered, the recirculation damper is in external circulation mode. After entering internal circulation mode, the carbon dioxide concentration inside the vehicle is calculated based on the number of passengers, passenger compartment volume, and the carbon dioxide exhalation rate of an adult at rest. Then, based on this concentration and the preset carbon dioxide concentration control target, the time interval for forcibly switching to external circulation is calculated. When the duration of maintaining internal circulation reaches this time interval, the duration of forced external circulation is calculated based on the current vehicle speed. Subsequently, the recirculation damper switches to external circulation mode, and the external circulation mode is maintained according to the corresponding trigger conditions. Afterward, it connects back to the internal circulation related control logic, thereby realizing intelligent switching of circulation mode.

[0085] This embodiment provides a method for controlling the recirculation damper of an automotive air conditioning system. It acquires thermal management status information, target air conditioning mode status, and air conditioning set temperature. Based on preset strong control conditions, it matches the target recirculation mode. When the current recirculation mode is not the target recirculation mode, it switches the recirculation damper from the current recirculation mode to the target recirculation mode to complete the control of the automotive air conditioning recirculation damper. This can ensure the working effect of the air conditioning system under special operating conditions.

[0086] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the automotive air conditioning recirculation damper control method of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0087] This application also provides an automotive air conditioning recirculation damper control device, please refer to... Figure 4 The automotive air conditioning recirculation damper control device includes: The data acquisition module 10 is used to acquire the current circulation mode of the circulating damper; The data processing module 20 is used to obtain the number of passengers in the cabin when the current loop mode is the inner loop mode, and to determine the loop mode switching time interval based on the number of passengers in the cabin. The circulation control module 30 is used to switch the circulation damper from the internal circulation mode to the external circulation mode when the duration of maintaining the internal circulation mode reaches the circulation mode switching time interval, and to determine the duration of external circulation based on the current vehicle speed. The circulation control module 30 is further configured to switch the circulation damper from the external circulation mode to the internal circulation mode when the duration of maintaining the external circulation mode reaches the duration of the external circulation, so as to complete the control of the automotive air conditioning circulation damper.

[0088] In one embodiment, the data processing module 20 is further configured to acquire preset carbon dioxide concentration, passenger cabin volume, and carbon dioxide exhalation rate information; The time interval for switching between cyclic modes is determined based on the preset carbon dioxide concentration, the passenger cabin volume, the carbon dioxide exhalation rate, and the number of passengers in the passenger cabin.

[0089] In one embodiment, the data processing module 20 is further configured to calculate the increased carbon dioxide concentration based on the passenger cabin volume, the carbon dioxide exhalation rate information, and the number of passengers in the passenger cabin. The time interval for switching the cycle mode is determined based on the preset carbon dioxide concentration and the increased carbon dioxide concentration.

[0090] In one embodiment, the circulation control module 30 is further configured to acquire thermal management status information, target air conditioning mode status, and air conditioning set temperature when the circulation damper control mode is in automatic mode; When at least one of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meets the strong control conditions of the circulation damper, the target circulation mode is obtained. When the current circulation mode is not the target circulation mode, the circulation damper is switched from the current circulation mode to the target circulation mode to complete the control of the car air conditioning circulation damper.

[0091] In one embodiment, the circulation control module 30 is further configured to determine the target circulation mode based on the compliant circulation damper strong control condition when any one of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meets the compliant circulation damper strong control condition. When at least two of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meet the strong control conditions for the circulating damper, the priority of the met strong control conditions for the circulating damper is obtained, and the target circulation mode is determined based on the priority.

[0092] In one embodiment, the circulation control module 30 is further configured to determine that the first external circulation strong control condition is met when the thermal management status information triggers the hot air protection strategy; When the air conditioner is set to the first target temperature, it is determined that the second external circulation strong control condition is met; When the air conditioner is set to the second target temperature, it is determined that the first internal circulation strong control condition is met, wherein the second target temperature is less than the first target temperature; When the target air conditioning mode is in the on state, it is determined that the second internal circulation strong control condition is met, wherein the priority of the first external circulation strong control condition is greater than the priority of the second external circulation strong control condition, the priority of the second external circulation strong control condition is equal to the priority of the first internal circulation strong control condition, and the priority of the first internal circulation strong control condition is greater than the priority of the second internal circulation strong control condition.

[0093] In one embodiment, the circulation control module 30 is further configured to acquire the ambient temperature and the current air conditioning mode when the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature do not meet the strong control conditions of the circulation damper. The current circulation mode of the circulating damper is controlled according to the ambient temperature and the current air conditioning mode.

[0094] The automotive air conditioning recirculation damper control device provided in this application, employing the automotive air conditioning recirculation damper control method in the above embodiments, can solve the technical problem of how to accurately determine the timing of air exchange, so as to reduce air conditioning energy consumption as much as possible while timely introducing fresh air. Compared with the prior art, the beneficial effects of the automotive air conditioning recirculation damper control device provided in this application are the same as the beneficial effects of the automotive air conditioning recirculation damper control method provided in the above embodiments, and other technical features in the automotive air conditioning recirculation damper control device are the same as the features disclosed in the methods of the above embodiments, and will not be repeated here.

[0095] This application provides an automotive air conditioning recirculation damper control device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the automotive air conditioning recirculation damper control method in the above embodiment 1.

[0096] The following is for reference. Figure 5This document illustrates a structural schematic diagram of an automotive air conditioning recirculation damper control device suitable for implementing embodiments of this application. The automotive air conditioning recirculation damper control device in embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital radio receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Description), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 5 The illustrated automotive air conditioning recirculation damper control device is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0097] like Figure 5 As shown, the automotive air conditioning recirculation damper control device may include a processing unit 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in ROM (Read Only Memory) 1002 or a program loaded from storage device 1003 into RAM (Random Access Memory) 1004. RAM 1004 also stores various programs and data required for the operation of the automotive air conditioning recirculation damper control device. The processing unit 1001, ROM 1002, and RAM 1004 are interconnected via bus 1005. Input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to I / O interface 1006: input devices 1007 including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 1008 including, for example, LCDs (Liquid Crystal Displays), speakers, vibrators, etc.; storage devices 1003 including, for example, magnetic tapes, hard disks, etc.; and communication devices 1009. Communication device 1009 allows the automotive air conditioning recirculation damper control device to communicate wirelessly or wiredly with other devices to exchange data. Although the figure shows an automotive air conditioning recirculation damper control device with various systems, it should be understood that it is not required to implement or possess all the systems shown. More or fewer systems can be implemented or possessed alternatively.

[0098] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from ROM 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0099] The automotive air conditioning recirculation damper control device provided in this application, employing the automotive air conditioning recirculation damper control method described in the above embodiments, solves the technical problem of accurately determining the timing of air exchange to minimize air conditioning energy consumption while timely introducing fresh air. Compared with the prior art, the beneficial effects of the automotive air conditioning recirculation damper control device provided in this application are the same as those of the automotive air conditioning recirculation damper control method provided in the above embodiments, and other technical features of this automotive air conditioning recirculation damper control device are the same as those disclosed in the previous embodiment method, and will not be repeated here.

[0100] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0101] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0102] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the automotive air conditioning recirculation damper control method in the above embodiments.

[0103] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, RAM (Random Access Memory), ROM (Read Only Memory), EPROM (Erasable Programmable Read Only Memory), or flash memory, optical fiber, CD-ROM (CD-Read Only Memory), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0104] The aforementioned computer-readable storage medium may be included in the automotive air conditioning recirculation damper control device; or it may exist independently and not be assembled into the automotive air conditioning recirculation damper control device.

[0105] The aforementioned computer-readable storage medium carries one or more programs. When the one or more programs are executed by the automotive air conditioning recirculation damper control device, the automotive air conditioning recirculation damper control device: acquires the current recirculation mode of the recirculation damper; when the current recirculation mode is an internal recirculation mode, acquires the number of passengers in the passenger compartment and determines the recirculation mode switching time interval based on the number of passengers in the passenger compartment; when the duration of maintaining the internal recirculation mode reaches the recirculation mode switching time interval, switches the recirculation damper from the internal recirculation mode to the external recirculation mode and determines the external recirculation duration based on the current vehicle speed; when the duration of maintaining the external recirculation mode reaches the external recirculation duration, switches the recirculation damper from the external recirculation mode to the internal recirculation mode, thereby completing the automotive air conditioning recirculation damper control.

[0106] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including LAN (Local Area Network) or WAN (Wide Area Network)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0107] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0108] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0109] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the above-described automotive air conditioning recirculation damper control method. This solves the technical problem of accurately determining the timing of air exchange to minimize air conditioning energy consumption while timely introducing fresh air. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the automotive air conditioning recirculation damper control method provided in the above embodiments, and will not be elaborated upon here.

[0110] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the automotive air conditioning recirculation damper control method described above.

[0111] The computer program product provided in this application solves the technical problem of accurately determining the timing of air exchange in order to minimize air conditioning energy consumption while timely introducing fresh air. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the automotive air conditioning recirculation damper control method provided in the above embodiments, and will not be elaborated upon here.

[0112] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A method for controlling the circulating air damper of an automotive air conditioner, characterized in that, The automotive air conditioning recirculation damper control method includes: Get the current circulation mode of the circulation damper; When the current cycle mode is the inner cycle mode, the number of passengers in the cabin is obtained, and the cycle mode switching time interval is determined based on the number of passengers in the cabin; When the duration of maintaining the internal circulation mode reaches the circulation mode switching time interval, the circulation damper is switched from the internal circulation mode to the external circulation mode, and the duration of external circulation is determined according to the current vehicle speed. When the duration of maintaining the external circulation mode reaches the duration of the external circulation, the circulation damper is switched from the external circulation mode to the internal circulation mode to complete the control of the car air conditioning circulation damper.

2. The method as described in claim 1, characterized in that, The step of determining the time interval for switching between cyclic modes based on the number of passengers in the cabin includes: Acquire information on preset carbon dioxide concentration, passenger cabin volume, and carbon dioxide exhalation rate; The time interval for switching between cyclic modes is determined based on the preset carbon dioxide concentration, the passenger cabin volume, the carbon dioxide exhalation rate, and the number of passengers in the passenger cabin.

3. The method as described in claim 2, characterized in that, The step of determining the cycle mode switching time interval based on the preset carbon dioxide concentration, the passenger cabin volume, the carbon dioxide exhalation rate information, and the number of passengers in the passenger cabin includes: The increased carbon dioxide concentration is calculated based on the passenger cabin volume, the carbon dioxide exhalation rate, and the number of passengers in the passenger cabin. The time interval for switching the cycle mode is determined based on the preset carbon dioxide concentration and the increased carbon dioxide concentration.

4. The method as described in claim 1, characterized in that, After the step of obtaining the current circulation mode of the circulation damper, the method further includes: When the circulating damper control mode is in automatic mode, acquire thermal management status information, target air conditioning mode status, and air conditioning set temperature. When at least one of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meets the strong control conditions of the circulation damper, the target circulation mode is obtained. When the current circulation mode is not the target circulation mode, the circulation damper is switched from the current circulation mode to the target circulation mode to complete the control of the car air conditioning circulation damper.

5. The method as described in claim 4, characterized in that, The step of obtaining the target circulation mode when at least one of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meets the strong control condition of the circulation damper includes: When any one of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meets the strong control conditions of the circulating damper, the target circulation mode is determined based on the met strong control conditions of the circulating damper. When at least two of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meet the strong control conditions for the circulating damper, the priority of the met strong control conditions for the circulating damper is obtained, and the target circulation mode is determined based on the priority.

6. The method as described in claim 4, characterized in that, Before the step of obtaining the target circulation mode when at least one of the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature meets the strong control condition of the circulation damper, the method further includes: When the thermal management status information triggers the hot air protection strategy, it is determined that the first external circulation strong control condition is met; When the air conditioner is set to the first target temperature, it is determined that the second external circulation strong control condition is met; When the air conditioner is set to the second target temperature, it is determined that the first internal circulation strong control condition is met, wherein the second target temperature is less than the first target temperature; When the target air conditioning mode is in the on state, it is determined that the second internal circulation strong control condition is met, wherein the priority of the first external circulation strong control condition is greater than the priority of the second external circulation strong control condition, the priority of the second external circulation strong control condition is equal to the priority of the first internal circulation strong control condition, and the priority of the first internal circulation strong control condition is greater than the priority of the second internal circulation strong control condition.

7. The method as described in claim 4, characterized in that, After the step of acquiring thermal management status information, target air conditioning mode status, and air conditioning set temperature when the circulating damper control mode is in automatic mode, the method further includes: When the thermal management status information, the target air conditioning mode status, and the air conditioning set temperature do not meet the strong control conditions of the circulating damper are obtained, the ambient temperature and the current air conditioning mode are acquired. The current circulation mode of the circulating damper is controlled according to the ambient temperature and the current air conditioning mode.

8. A car air conditioning recirculation damper control device, characterized in that, The device includes: The data acquisition module is used to obtain the current circulation mode of the circulating damper; The data processing module is used to obtain the number of passengers in the cabin when the current loop mode is the inner loop mode, and to determine the loop mode switching time interval based on the number of passengers in the cabin. The circulation control module is used to switch the circulation damper from the internal circulation mode to the external circulation mode when the duration of maintaining the internal circulation mode reaches the circulation mode switching time interval, and to determine the duration of external circulation based on the current vehicle speed. The circulation control module is also used to switch the circulation damper from the external circulation mode to the internal circulation mode when the duration of maintaining the external circulation mode reaches the duration of the external circulation, so as to complete the control of the car air conditioning circulation damper.

9. A control device for a car air conditioning recirculation damper, characterized in that, The device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the automotive air conditioning recirculation damper control method as described in any one of claims 1 to 7.

10. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, it implements the steps of the automotive air conditioning circulating damper control method as described in any one of claims 1 to 7.

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