Method and device for controlling active grille shutter of vehicle, electronic equipment and medium

Abstract

The application provides a control method and device of an active grille shutter of a vehicle, an electronic device and a storage medium. The method comprises the following steps: when a current air conditioning system of the vehicle is in an open state, a target pressure of the air conditioning system is acquired; an actual pressure of the air conditioning system is collected in real time; the opening degree of the active grille shutter is controlled according to the absolute value of the difference between the actual pressure and the target pressure and a preset threshold; when the opening degree of the active grille shutter is maintained unchanged, if the current speed of the vehicle is greater than a speed threshold and the vehicle is in a continuous acceleration state, the opening degree of the active grille shutter is controlled to decrease until a termination condition is met. The method can more accurately control the air intake amount; and when the current speed of the vehicle is greater than the speed threshold and the vehicle is in the continuous acceleration state, the opening degree of the active grille shutter is controlled to decrease, so that the wind resistance can be maximally reduced, and the energy consumption economy of the vehicle can be improved.

Description

Technical Field

[0001] This application relates to the field of active grille shutter control technology, and in particular to a control method, device, electronic device and storage medium for an active grille shutter in automobiles. Background Technology

[0002] As people's living standards improve, automobiles have become an indispensable means of transportation, and their quality and details are receiving increasing attention. Active grille shutters in automobiles can intelligently adjust the airflow into the engine compartment according to different operating conditions, achieving efficient management of engine heat load and reducing the vehicle's drag coefficient, thereby reducing emissions and fuel consumption.

[0003] Currently, the control of active grille shutters is usually limited to simply opening and closing the grille when there is a need for cooling in the engine compartment. However, the opening degree of the active grille cannot be adjusted, resulting in poor performance in improving the vehicle's power economy. Summary of the Invention

[0004] The main objective of this application is to provide a control method, device, electronic device, and storage medium for an active air intake grille in a vehicle. The aim is to control the opening of the active air intake grille by using the absolute value of the difference between the actual pressure and the target pressure of the air conditioning system in real time, and a preset threshold, thereby enabling more precise control of the air intake volume. Furthermore, while maintaining a constant opening of the active air intake grille, if the vehicle's current speed exceeds a speed threshold and the vehicle is continuously accelerating, the opening of the active air intake grille is reduced, thereby minimizing wind resistance and improving the vehicle's energy economy.

[0005] To achieve the above objectives, a first aspect of this application provides a control method for an active grille shutter on an automobile, the method comprising:

[0006] When the car's air conditioning system is currently on, obtain the target pressure of the air conditioning system;

[0007] Real-time acquisition of the actual pressure of the air conditioning system;

[0008] The opening degree of the active air intake grille is controlled based on the absolute value of the difference between the actual pressure and the target pressure and a preset threshold.

[0009] When the opening of the active air intake grille remains unchanged, if the current vehicle speed is greater than a speed threshold and the vehicle is in a continuous acceleration state, the opening of the active air intake grille is controlled to decrease until the termination condition is met. The termination condition includes a first termination condition or a second termination condition. The first termination condition is that the vehicle is not in a continuous acceleration state, and the second termination condition is that the absolute value of the difference between the actual pressure and the target pressure is equal to the preset threshold.

[0010] In some embodiments, obtaining the target pressure of the air conditioning system when the vehicle's current air conditioning system is on includes:

[0011] Check if the car's air conditioning system is currently on;

[0012] When the car's air conditioning system is currently on, the target pressure of the air conditioning system is obtained through a first relationship table, which is a pre-set correspondence table between the on / off state of the air conditioning system and the target pressure.

[0013] In some embodiments, when the vehicle's current air conditioning system is on, after obtaining the target pressure of the air conditioning system, the method further includes:

[0014] Obtain the ambient temperature and altitude information of the vehicle's location;

[0015] The target pressure is corrected based on the ambient temperature and altitude information.

[0016] In some embodiments, controlling the opening of the active air intake grille based on the absolute value of the difference between the actual pressure and the target pressure and a preset threshold includes:

[0017] If the absolute value of the difference between the actual pressure and the target pressure is greater than the preset threshold, the current opening of the active air intake grille is adjusted.

[0018] If the absolute value of the difference between the actual pressure and the target pressure is not greater than the preset threshold, the current opening of the active air intake grille is maintained.

[0019] In some embodiments, adjusting the current opening of the active air intake grille if the absolute value of the difference between the actual pressure and the target pressure is greater than the preset threshold includes:

[0020] If the actual pressure is greater than the target pressure, and the absolute value of the difference between the actual pressure and the target pressure is greater than the preset threshold, the current opening of the active air intake grille is increased until the absolute value of the difference between the actual pressure and the target pressure is no greater than the preset threshold.

[0021] If the actual pressure is less than the target pressure, and the absolute value of the difference between the actual pressure and the target pressure is greater than the preset threshold, the current opening of the active air intake grille is reduced until the absolute value of the difference between the actual pressure and the target pressure is no greater than the preset threshold.

[0022] In some embodiments, when the opening of the active air intake grille remains constant, the method further includes:

[0023] Obtain the car's current speed and speed changes over a preset time period;

[0024] Determine whether the current speed of the vehicle is greater than a speed threshold;

[0025] Based on the vehicle speed changes within the preset time period, it is determined whether the car is in a state of continuous acceleration.

[0026] In some embodiments, when the opening of the active air intake grille remains constant, the method further includes:

[0027] If the current speed of the vehicle is not greater than the speed threshold, or if the vehicle is not in a state of continuous acceleration, the active air intake grille is controlled to maintain its current opening.

[0028] If the current speed of the vehicle is greater than the speed threshold and the vehicle is in a continuous acceleration state, the opening of the active air intake grille is reduced until the termination condition is met, at which point the active air intake grille is maintained at the reduced opening.

[0029] To achieve the above objectives, a second aspect of this application provides a control device for an active grille shutter for automobiles, the device comprising:

[0030] The acquisition module is used to acquire the target pressure of the air conditioning system when the car's current air conditioning system is on.

[0031] The data acquisition module is used to collect the actual pressure of the air conditioning system in real time.

[0032] The first control module is used to control the opening degree of the active air intake grille based on the absolute value of the difference between the actual pressure and the target pressure and a preset threshold.

[0033] The second control module is used to control the opening of the active air intake grille to decrease when the opening of the active air intake grille remains unchanged, if the current vehicle speed is greater than a speed threshold and the vehicle is in a continuous acceleration state, until an end condition is met. The end condition includes a first end condition or a second end condition. The first end condition is that the vehicle is not in a continuous acceleration state, and the second end condition is that the absolute value of the difference between the actual pressure and the target pressure is equal to the preset threshold.

[0034] To achieve the above objectives, a third aspect of this application provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the method described in the first aspect.

[0035] To achieve the above objectives, a fourth aspect of the present application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described in the first aspect.

[0036] This application discloses a control method, device, electronic equipment, and storage medium for an active air intake grille in a vehicle. The method includes: acquiring the target pressure of the air conditioning system when it is currently on; acquiring the actual pressure of the air conditioning system in real time; controlling the opening of the active air intake grille based on the absolute value of the difference between the actual pressure and the target pressure and a preset threshold; and reducing the opening of the active air intake grille when the opening remains constant, provided the vehicle's current speed exceeds a speed threshold and the vehicle is continuously accelerating, until a termination condition is met. By controlling the opening of the active air intake grille using the real-time acquisition of the absolute value of the difference between the actual pressure and the target pressure of the air conditioning system and a preset threshold, the air intake volume can be controlled more precisely. Furthermore, by reducing the opening of the active air intake grille when the vehicle's current speed exceeds a speed threshold and the vehicle is continuously accelerating, wind resistance can be minimized, improving vehicle fuel economy. Attached Figure Description

[0037] Figure 1 This is a flowchart of the control method for an active grille shutter for automobiles provided in the embodiments of this application;

[0038] Figure 2 This is a flowchart of the steps for obtaining the target pressure of the air conditioning system when the current air conditioning system of the car is on, provided in an embodiment of this application.

[0039] Figure 3 This is a flowchart of the steps performed after obtaining the target pressure of the air conditioning system when the current air conditioning system of the car is on, according to an embodiment of this application.

[0040] Figure 4 This is a flowchart of the steps for controlling the opening of the active air intake grille based on the absolute value of the difference between the actual pressure and the target pressure and a preset threshold, as provided in the embodiments of this application.

[0041] Figure 5This is a flowchart of the steps to adjust the current opening of the active air intake grille if the absolute value of the difference between the actual pressure and the target pressure is greater than a preset threshold, as provided in the embodiments of this application.

[0042] Figure 6 This is a flowchart of the steps performed when the opening of the active air intake grille remains unchanged, as provided in an embodiment of this application.

[0043] Figure 7 This is a schematic diagram of the structure of the control device for the active grille shutter of an automobile provided in an embodiment of this application;

[0044] Figure 8 This is a schematic diagram of the hardware structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0046] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0048] In recent years, with rising oil prices and the promotion of energy conservation and emission reduction, a series of methods have emerged to achieve energy conservation and emission reduction in automobiles. Active grille shutters are a relatively new technology that optimizes aerodynamic performance and reduces wind resistance, thereby reducing fuel consumption. The grille is an important component of the front styling of a car, influencing the overall design style, and also serves as the air inlet for the engine compartment. It works by measuring information such as engine coolant temperature, oil temperature, air conditioning system status, and intake air temperature, and then rationally controlling the opening of the front grille according to different driving conditions. This alters the amount of cooling air entering the engine compartment, reduces internal circulation resistance, and improves overall fuel economy.

[0049] However, currently, the control of active grille shutters is usually only implemented when there is a need for cooling in the engine compartment. The active grille shutters are simply opened and closed without considering the balance between vehicle speed and the air conditioning system, resulting in poor performance in improving the vehicle's power economy.

[0050] Based on this, this application proposes a control method for an active air intake grille. By collecting the absolute value of the difference between the actual pressure and the target pressure of the air conditioning system in real time and a preset threshold, the opening of the active air intake grille is controlled, which can more accurately control the air intake volume. At the same time, a vehicle speed reference is introduced to further adjust the current opening of the active air intake grille, which can minimize wind resistance and achieve a balance between vehicle speed and the air conditioning system.

[0051] Reference Figure 1 , Figure 1 This is a flowchart of the control method for an active grille shutter in an automobile provided in the embodiments of this application. Figure 1 The method may include, but is not limited to, steps S101 to S104.

[0052] Step S101: When the car's current air conditioning system is on, obtain the target pressure of the air conditioning system.

[0053] In this embodiment, the target pressure varies depending on the vehicle's air conditioning configuration when the air conditioning system is turned on. Specifically, it is necessary to determine the type of air conditioning system in the vehicle and then determine the target pressure when the air conditioning system is turned on.

[0054] Reference Figure 2 , Figure 2 This application provides a flowchart of steps for obtaining the target pressure of the air conditioning system when the current air conditioning system of the car is on, including but not limited to steps S201 to S202.

[0055] Step S201: Detect whether the car's current air conditioning system is on;

[0056] Step S202: When the car's air conditioning system is currently on, the target pressure of the air conditioning system is obtained through the first relationship table, which is a pre-set correspondence table between the on-state of the air conditioning system and the target pressure.

[0057] In practical applications, theoretically, by measuring information such as engine coolant temperature, engine oil temperature, air conditioning system status, and intake air temperature, and based on different driving conditions, the opening of the active grille can be reasonably controlled. However, this control logic covers a wide range and requires consideration of many parameters. In this embodiment, the control of the active grille is mainly based on the combination of the air conditioning system and vehicle speed, without considering the control logic of the engine cooling system, etc., with the aim of reducing wind resistance during vehicle operation and improving the comfort of the air conditioning system.

[0058] In this embodiment, it is first detected whether the current air conditioning system of the car is on. When the current air conditioning system of the car is on, the target pressure of the air conditioning system is obtained through the first relationship table. The first relationship table is a pre-set correspondence table between the on state of the air conditioning system and the target pressure.

[0059] It's important to note that different cars have different target pressure values ​​for their respective air conditioning systems depending on their configuration. For example, for car A, after configuring the air conditioning system, a table can be created showing the relationship between the different target pressures for each air conditioning system's operating state. For instance, when the air conditioning system is on and the vent speed is at level 1, the target pressure value is P1; when the air conditioning system is on and the vent speed is at level 2, the target pressure value is P2. Therefore, when the air conditioning system is on, its specific operating state can be obtained, and then the current target pressure of the air conditioning system can be determined based on the pre-established table corresponding to different operating states and target pressures.

[0060] It should be noted that the active grille shutter control method for automobiles proposed in this application can only be executed when the air conditioning system is turned on. In other words, if the automobile's air conditioning system is not turned on, it is impossible to control the active grille shutter based on the state of the air conditioning system.

[0061] Reference Figure 3 , Figure 3 This is a flowchart of the steps to be performed after obtaining the target pressure of the air conditioning system when the current air conditioning system of the car is on, provided in the embodiments of this application, including but not limited to steps S301 to S302.

[0062] Step S301: Obtain the ambient temperature and altitude information of the vehicle's location;

[0063] Step S302: Correct the target pressure based on ambient temperature and altitude information.

[0064] In this embodiment of the application, considering that the pressure is also affected by altitude and temperature, after obtaining the current target pressure of the car through the pre-established first relationship table, it is necessary to further obtain the ambient temperature and altitude information of the current location of the car, and then correct the target pressure according to the ambient temperature and altitude information to obtain a more accurate target pressure value, so as to more accurately control the opening of the active air intake grille.

[0065] Step S102: Real-time acquisition of the actual pressure of the air conditioning system.

[0066] In this embodiment, the actual pressure of the air conditioning system can be collected in real time by a pressure sensor installed in the air conditioning system pipeline.

[0067] It should be noted that the actual pressure of the air conditioning system changes with the opening of the active air intake grille. For example, increasing the opening of the active air intake grille decreases the actual pressure of the air conditioning system, while decreasing the opening increases the actual pressure. By collecting real-time data on the actual pressure of the air conditioning system, the real-time changing pressure value can be obtained.

[0068] It is understood that in this embodiment, while the actual pressure of the air conditioning system is collected in real time, the target pressure of the air conditioning system can also be obtained in real time. However, the target pressure does not change with the opening of the active air intake grille, but rather with changes in altitude and ambient temperature. That is to say, when the altitude and ambient temperature remain constant, the target pressure of the air conditioning system will not change. However, regardless of whether the target pressure of the air conditioning system changes, this embodiment will acquire the target pressure of the air conditioning system in real time.

[0069] Step S103: Control the opening of the active air intake grille based on the absolute value of the difference between the actual pressure and the target pressure and a preset threshold.

[0070] In this embodiment of the application, after the actual pressure and target pressure of the air conditioning system are collected in real time, the opening of the active air intake grille can be controlled according to the absolute value of the difference between the actual pressure and the target pressure and a preset threshold.

[0071] Reference Figure 4 , Figure 4 This is a flowchart of the steps for controlling the opening of the active air intake grille based on the absolute value of the difference between the actual pressure and the target pressure and a preset threshold, provided in the embodiments of this application, including but not limited to steps S401 to S402.

[0072] Step S401: If the absolute value of the difference between the actual pressure and the target pressure is greater than a preset threshold, adjust the current opening of the active air intake grille.

[0073] In step S402, if the absolute value of the difference between the actual pressure and the target pressure is not greater than a preset threshold, maintain the current opening of the active air intake grille.

[0074] In this embodiment, after real-time acquisition of the actual and target pressures of the air conditioning system, the difference between the actual and target pressures can be further calculated. The absolute value of this difference is then compared to a preset threshold. If the absolute value of the difference is greater than the preset threshold, it is determined that the actual and target pressures differ significantly, and the current opening of the active air intake grille needs to be adjusted. If the absolute value of the difference is not greater than the preset threshold, it is determined that the actual and target pressures differ only slightly, and the current opening of the active air intake grille does not need to be adjusted; it is sufficient to maintain the current opening of the active air intake grille.

[0075] For example, the current actual pressure of the air conditioning system is collected as P1, and the current target pressure is obtained by correcting for ambient temperature and altitude as P0. Then, P0 is subtracted from P1, and the absolute value of the difference is determined to be greater than a preset threshold Pv, i.e., |P1-P0|>Pv. If |P1-P0|>Pv, the current opening of the active air intake grille needs to be adjusted. If |P1-P0|≤Pv, the current opening of the active air intake grille does not need to be adjusted; it only needs to be maintained.

[0076] Reference Figure 5 , Figure 5 This application provides a flowchart of steps for adjusting the current opening of the active air intake grille if the absolute value of the difference between the actual pressure and the target pressure is greater than a preset threshold, including but not limited to steps S501 to S502.

[0077] Step S501: If the actual pressure is greater than the target pressure, and the absolute value of the difference between the actual pressure and the target pressure is greater than a preset threshold, increase the current opening of the active air intake grille until the absolute value of the difference between the actual pressure and the target pressure is no greater than the preset threshold.

[0078] In step S502, if the actual pressure is less than the target pressure and the absolute value of the difference between the actual pressure and the target pressure is greater than a preset threshold, the current opening of the active air intake grille is reduced until the absolute value of the difference between the actual pressure and the target pressure is no greater than the preset threshold.

[0079] In this embodiment, the adjustment range needs to be preset, i.e., the increase range and the decrease range. For example, increasing the current opening of the active air intake grille specifically means increasing the opening by 15% each time, while decreasing the current opening of the active air intake grille means decreasing the opening by 15% each time. After increasing the current opening of the active air intake grille once, the actual pressure and target pressure after the increase need to be collected again, and then the absolute value of the difference between the actual pressure and the target pressure after the increase needs to be compared with the preset threshold. If the absolute value of the difference between the actual pressure and the target pressure is still greater than the preset threshold, the current opening of the active air intake grille continues to be increased until the absolute value of the difference between the actual pressure and the target pressure after the increase is no greater than the preset threshold. Similarly, after reducing the current opening of the active air intake grille once, the actual pressure and target pressure after the reduction need to be collected again. Then, the absolute value of the difference between the actual pressure and the target pressure after the reduction is compared with the preset threshold. If the absolute value of the difference between the actual pressure and the target pressure is still greater than the preset threshold, the current opening of the active air intake grille is reduced again until the absolute value of the difference between the actual pressure and the target pressure after the reduction is not greater than the preset threshold.

[0080] It should be noted that, in this embodiment, when the opening of the active air intake grille is increased to its full open state, even if the absolute value of the difference between the actual pressure and the target pressure is still greater than the preset threshold, the opening of the active air intake grille cannot be increased further. In this case, it is sufficient to keep the active air intake grille in its fully open state. Similarly, when the opening of the active air intake grille is decreased to 0, even if the absolute value of the difference between the actual pressure and the target pressure is still greater than the preset threshold, the opening of the active air intake grille cannot be decreased further. In this case, it is sufficient to keep the active air intake grille in its closed state.

[0081] In this embodiment of the application, after the actual pressure and target pressure of the air conditioning system are collected in real time, the actual pressure and target pressure are compared, and the following four situations exist:

[0082] Scenario 1: The actual pressure is greater than the target pressure, and the absolute value of the difference between the actual and target pressures is greater than a preset threshold, i.e., P1 > P0, and P1 - P0 > Pv. In this case, the current opening of the active air intake grille is increased, for example, by 15%. Since the opening of the active air intake grille has increased by 15%, the actual pressure of the air conditioning system will decrease. After increasing the opening of the active air intake grille by 15%, the actual and target pressures of the air conditioning system are collected again, and it is determined whether the actual pressure is greater than the target pressure, and whether the absolute value of the difference between the actual and target pressures is greater than a preset threshold. If the actual pressure is greater than the target pressure, and the absolute value of the difference between the actual and target pressures is greater than the preset threshold, then the current opening of the active air intake grille is increased again, i.e., the opening of the active air intake grille is increased by another 15%, until the absolute value of the difference between the actual and target pressures is no greater than the preset threshold or the active air intake grille is fully open.

[0083] Scenario 2: The actual pressure is greater than the target pressure, but the absolute value of the difference between the actual pressure and the target pressure is not greater than the preset threshold, i.e., P1 > P0, but P1 - P0 ≤ Pv. In this case, maintain the current opening of the active air intake grille.

[0084] Scenario 3: The actual pressure is less than the target pressure, and the absolute value of the difference between the actual and target pressures is greater than a preset threshold, i.e., P1 < P0, and |P1-P0| > Pv. In this case, the current opening of the active air intake grille is reduced, for example, by 15%. Because the opening of the active air intake grille is reduced by 15%, the actual pressure of the air conditioning system will increase. After reducing the opening of the active air intake grille by 15%, the actual and target pressures of the air conditioning system are collected again, and it is determined whether the actual pressure is less than the target pressure, and whether the absolute value of the difference between the actual and target pressures is greater than a preset threshold. If the actual pressure is less than the target pressure, and the absolute value of the difference between the actual and target pressures is greater than the preset threshold, then the current opening of the active air intake grille is reduced again, i.e., the opening of the active air intake grille is reduced by another 15%, until the absolute value of the difference between the actual and target pressures is no greater than the preset threshold or the active air intake grille is in a closed state.

[0085] Scenario 4: The actual pressure is less than the target pressure, but the absolute value of the difference between the actual pressure and the target pressure is not greater than the preset threshold, i.e., P1 < P0, but |P1 - P0| ≤ Pv. In this case, maintain the current opening of the active air intake grille.

[0086] It should be noted that each time the opening of the active air intake grille is increased or decreased, the actual pressure and target pressure need to be collected again after the increase or decrease. Generally, after increasing or decreasing the opening of the active air intake grille, the actual pressure will change accordingly, while the target pressure usually remains unchanged because the operation only takes a very short time, such as 1 second. For example, after increasing the opening of the active air intake grille, the actual pressure will decrease, while the target pressure remains unchanged. After decreasing the opening of the active air intake grille, the actual pressure will increase, while the target pressure remains unchanged.

[0087] Understandably, since the target pressure is only related to altitude and ambient temperature, it does not change instantaneously. If the altitude and ambient temperature remain unchanged while the car is moving, the target pressure will remain constant. Because the target pressure does not change instantaneously, increasing or decreasing the opening of the active air intake grille will not change the target pressure compared to the previous moment, such as one second ago. In this case, only the change in actual pressure needs to be considered. However, considering that altitude and ambient temperature may change as the car moves, it is still necessary to obtain the target pressure in real time.

[0088] In this embodiment, the opening of the active air intake grille can be adjusted by comparing the absolute value of the difference between the actual pressure and the target pressure collected in real time with a preset threshold. After adjustment, the active air intake grille will maintain the adjusted opening. However, if the vehicle is traveling at high speed and continuously accelerating, further adjustment of the current opening of the active air intake grille is needed to reduce wind resistance.

[0089] Reference Figure 6 , Figure 6 This is a flowchart of the steps performed when the opening of the active air intake grille remains unchanged, provided in the embodiments of this application, including but not limited to steps S601 to S603.

[0090] Step S601: Obtain the current speed of the car and the speed change within a preset time period;

[0091] Step S602: Determine whether the current speed of the car is greater than the speed threshold;

[0092] Step S603: Determine whether the car is in a continuous acceleration state based on the speed change within a preset time period.

[0093] In this embodiment of the application, when the opening of the active air intake grille remains unchanged, the current vehicle speed is first obtained, and it is determined whether the current vehicle speed is greater than a speed threshold, such as 80 km / h. If the current vehicle speed is greater than 80 km / h, it is determined that the vehicle is traveling at high speed. At this time, it is further determined whether the vehicle is in a continuous acceleration state. If the vehicle is in a continuous acceleration state, it is considered that the current wind resistance is large, and the current opening of the active air intake grille needs to be adjusted to reduce wind resistance.

[0094] In this embodiment, when the opening of the active air intake grille remains constant, the current speed of the vehicle and the speed change within a preset time period are first obtained. Then, it is determined whether the current speed of the vehicle is greater than a speed threshold, and based on the speed change within the preset time period, it is determined whether the vehicle is in a continuous acceleration state. If it is determined that the current speed of the vehicle is greater than the speed threshold and the vehicle is in a continuous acceleration state, the opening of the active air intake grille is controlled to decrease until the vehicle is no longer in a continuous acceleration state or the absolute value of the difference between the actual pressure and the target pressure is equal to the preset threshold.

[0095] It should be noted that in this embodiment, the current vehicle speed and whether the vehicle is in a continuous acceleration state are only determined when the opening of the active air intake grille remains unchanged. That is, if the opening of the active air intake grille is still being adjusted based on the air conditioning system, the vehicle speed determination logic is not considered. This is to avoid the control logic confusion caused by the air conditioning system control logic needing to increase the opening of the active air intake grille, while the vehicle speed control logic needs to decrease the opening of the active air intake grille.

[0096] Step S104: When the opening of the active air intake grille remains unchanged, if the current vehicle speed is greater than the speed threshold and the vehicle is in a continuous acceleration state, the opening of the active air intake grille is controlled to decrease until the termination condition is met. The termination condition includes a first termination condition or a second termination condition. The first termination condition is that the vehicle is not in a continuous acceleration state, and the second termination condition is that the absolute value of the difference between the actual pressure and the target pressure is equal to the preset threshold.

[0097] In this embodiment, when the opening of the active air intake grille is adjusted based on the absolute value of the difference between the actual pressure and the target pressure of the air conditioning system and a preset threshold, the active air intake grille can maintain a certain target opening. Without adjusting the opening of the active air intake grille, the actual pressure remains unchanged, and the target pressure will not change if the altitude and ambient temperature remain constant. In other words, the active air intake grille can maintain a certain target opening until the target pressure changes.

[0098] When the active grille shutter maintains a target opening, it indicates that the absolute value of the difference between the actual pressure and the target pressure is not greater than a preset threshold. If, at this point, the vehicle's current speed is determined to be greater than the speed threshold and the vehicle is continuously accelerating, the opening of the active grille shutter is reduced. For example, if the opening of the active grille shutter is reduced by 15%, the actual pressure in the air conditioning system will increase. This increase in actual pressure will also change the absolute value of the difference between the actual pressure and the target pressure. The opening of the active grille shutter is then reduced until the absolute value of the difference between the actual pressure and the target pressure equals the preset threshold or the vehicle is no longer continuously accelerating. At this point, the reduction in the opening of the active grille shutter stops, and the reduced opening is maintained.

[0099] It should be noted that in this embodiment of the application, when the current speed of the car is greater than the speed threshold, such as when the current speed of the car is greater than 80km / h, the actual pressure of the air conditioning system will not change drastically as the opening of the active air intake grille decreases. That is, when the opening of the active air intake grille is reduced, the actual pressure will increase slowly, thereby avoiding the problem of drastic changes in actual pressure, i.e., suddenly becoming very large, causing the absolute value of the difference between the actual pressure and the target pressure to exceed the preset threshold, which would then require controlling the opening of the active air intake grille to increase, resulting in control logic confusion.

[0100] It should be noted that when the opening of the active air intake grille remains unchanged, if the current speed of the car is not greater than the speed threshold, or the car is not in a state of continuous acceleration, the active air intake grille will continue to be controlled to maintain the current opening.

[0101] Please see Figure 7 This application embodiment also provides a control device 70 for an active grille shutter, which can implement the above-described control method for an active grille shutter. The device includes:

[0102] The acquisition module 701 is used to acquire the target pressure of the air conditioning system when the car's air conditioning system is currently on.

[0103] The data acquisition module 702 is used to collect the actual pressure of the air conditioning system in real time.

[0104] The first control module 703 is used to control the opening of the active air intake grille based on the absolute value of the difference between the actual pressure and the target pressure and a preset threshold.

[0105] The second control module 704 is used to control the opening of the active air intake grille to decrease when the opening of the active air intake grille remains unchanged, if the current vehicle speed is greater than the speed threshold and the vehicle is in a continuous acceleration state, until the termination condition is met. The termination condition includes a first termination condition or a second termination condition. The first termination condition is that the vehicle is not in a continuous acceleration state, and the second termination condition is that the absolute value of the difference between the actual pressure and the target pressure is equal to a preset threshold.

[0106] The specific implementation of the control device for the active grille shutter of the car is basically the same as the specific implementation of the control method for the active grille shutter of the car described above, and will not be repeated here.

[0107] This application also provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the aforementioned control method for an active air intake grille in a vehicle. This electronic device can be any smart terminal, including a tablet computer or an in-vehicle computer.

[0108] Please see Figure 8 , Figure 8 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this application. The electronic device includes:

[0109] The processor 801 can be implemented using a general-purpose CPU (Central Processing Unit), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application.

[0110] The memory 802 can be implemented as a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 802 can store the operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program code is stored in the memory 802 and is called and executed by the processor 801 to execute the control method for the active grille shutter of the automobile according to the embodiments of this application.

[0111] The 803 input / output interface is used to implement information input and output.

[0112] The communication interface 804 is used to enable communication and interaction between this device and other devices. Communication can be achieved through wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0113] Bus 805 transmits information between various components of the device (e.g., processor 801, memory 802, input / output interface 803, and communication interface 804);

[0114] The processor 801, memory 802, input / output interface 803, and communication interface 804 are connected to each other within the device via bus 805.

[0115] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

[0116] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0117] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0118] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0119] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification 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.

[0120] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0121] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above 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; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0122] The units described above 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 this embodiment according to actual needs.

[0123] 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.

[0124] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a 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 multiple instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0125] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A control method for an active grille shutter on an automobile, characterized in that, The method includes: When the car's air conditioning system is currently on, obtain the target pressure of the air conditioning system; Real-time acquisition of the actual pressure of the air conditioning system; The opening degree of the active air intake grille is controlled based on the absolute value of the difference between the actual pressure and the target pressure and a preset threshold. When the opening of the active air intake grille remains unchanged, if the current speed of the vehicle is greater than the speed threshold and the vehicle is in a continuous acceleration state, the opening of the active air intake grille is controlled to decrease until the termination condition is met. The termination condition includes a first termination condition or a second termination condition. The first termination condition is that the vehicle is not in a continuous acceleration state, and the second termination condition is that the absolute value of the difference between the actual pressure and the target pressure is equal to the preset threshold. When the vehicle's air conditioning system is currently on, obtaining the target pressure of the air conditioning system includes: Check if the car's air conditioning system is currently on; When the car's air conditioning system is currently on, the target pressure of the air conditioning system is obtained through a first relationship table, which is a pre-set correspondence table between the on / off state of the air conditioning system and the target pressure. The opening of the active air intake grille is controlled based on the absolute value of the difference between the actual pressure and the target pressure and a preset threshold, including: If the absolute value of the difference between the actual pressure and the target pressure is greater than the preset threshold, the current opening of the active air intake grille is adjusted. If the absolute value of the difference between the actual pressure and the target pressure is not greater than the preset threshold, the current opening of the active air intake grille is maintained.

2. The method according to claim 1, characterized in that, When the vehicle's air conditioning system is currently on, after obtaining the target pressure of the air conditioning system, the method further includes: Obtain the ambient temperature and altitude information of the vehicle's location; The target pressure is corrected based on the ambient temperature and altitude information.

3. The method according to claim 1, characterized in that, If the absolute value of the difference between the actual pressure and the target pressure is greater than the preset threshold, the current opening of the active air intake grille is adjusted, including: If the actual pressure is greater than the target pressure, and the absolute value of the difference between the actual pressure and the target pressure is greater than the preset threshold, the current opening of the active air intake grille is increased until the absolute value of the difference between the actual pressure and the target pressure is no greater than the preset threshold. If the actual pressure is less than the target pressure, and the absolute value of the difference between the actual pressure and the target pressure is greater than the preset threshold, the current opening of the active air intake grille is reduced until the absolute value of the difference between the actual pressure and the target pressure is no greater than the preset threshold.

4. The method according to claim 1, characterized in that, When the opening of the active air intake grille remains unchanged, the method further includes: Obtain the car's current speed and speed changes over a preset time period; Determine whether the current speed of the vehicle is greater than a speed threshold; Based on the vehicle speed changes within the preset time period, it is determined whether the car is in a state of continuous acceleration.

5. The method according to claim 1, characterized in that, When the opening of the active air intake grille remains unchanged, the method further includes: If the current speed of the vehicle is not greater than the speed threshold, or if the vehicle is not in a state of continuous acceleration, the active air intake grille is controlled to maintain its current opening. If the current speed of the vehicle is greater than the speed threshold and the vehicle is in a continuous acceleration state, the opening of the active air intake grille is controlled to decrease until the termination condition is met, and then the active air intake grille is controlled to maintain the reduced opening.

6. A control device for an active grille shutter on an automobile, characterized in that, The device includes: The acquisition module is used to acquire the target pressure of the air conditioning system when the car's current air conditioning system is on. The data acquisition module is used to collect the actual pressure of the air conditioning system in real time. The first control module is used to control the opening degree of the active air intake grille based on the absolute value of the difference between the actual pressure and the target pressure and a preset threshold. The second control module is used to control the opening of the active air intake grille to decrease when the opening of the active air intake grille remains unchanged, if the current vehicle speed is greater than a speed threshold and the vehicle is in a continuous acceleration state, until an end condition is met. The end condition includes a first end condition or a second end condition. The first end condition is that the vehicle is not in a continuous acceleration state, and the second end condition is that the absolute value of the difference between the actual pressure and the target pressure is equal to the preset threshold. The acquisition module is used for: Check if the car's air conditioning system is currently on; When the car's air conditioning system is currently on, the target pressure of the air conditioning system is obtained through a first relationship table, which is a pre-set correspondence table between the on / off state of the air conditioning system and the target pressure. The first control module is used for: If the absolute value of the difference between the actual pressure and the target pressure is greater than the preset threshold, the current opening of the active air intake grille is adjusted. If the absolute value of the difference between the actual pressure and the target pressure is not greater than the preset threshold, the current opening of the active air intake grille is maintained.

7. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method according to any one of claims 1 to 5.

8. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1 to 5.

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