Control method and control device of active air inlet grille and vehicle

Abstract

The invention discloses a control method and device of an active air inlet grille and a vehicle. The method comprises the steps that heat management working condition information of a target vehicle is obtained, and the heat management working condition information comprises a power system cooling mode, an air conditioner refrigeration mode and a heat pump air conditioner heating mode; operation condition information of the target vehicle is obtained, wherein the operation condition information comprises the environment temperature, the vehicle speed, the heat production amount of an electric drive assembly and the temperature of cooling liquid at an outlet of a radiator; and based on at least part of the thermal management working condition information, the operation working condition information, the first simulation model and the second simulation model, a control strategy is generated, and the control strategy is used for controlling the opening angle of the active air inlet grille. The technical problem that in the prior art, the control strategy of the active air inlet grille cannot achieve the optimal comprehensive energy consumption of the whole vehicle is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a control method and a control device for an active air intake grille and a vehicle. Background Art

[0002] As an intelligent thermal management system component, the active grille (AGS) dynamically adjusts its opening angle based on the vehicle's operating state and environmental conditions to optimize energy efficiency and aerodynamic performance. However, existing active grille control strategies primarily target traditional refrigerant direct heat exchange systems (primary circuits) and are often insufficient to address the specific needs of coolant indirect heat exchange systems (secondary circuits), particularly in terms of air conditioning performance in high-temperature environments and heat pump system efficiency in low-temperature environments. These control strategies fail to fully account for the complex needs of electric vehicles under different operating conditions, resulting in increased energy consumption in the thermal management system, which in turn affects the vehicle's overall energy consumption and range.

[0003] Currently, no effective solution has been proposed to address the problem that the control strategy of the active air intake grille in the existing technology cannot achieve the optimal comprehensive energy consumption of the entire vehicle. Summary of the Invention

[0004] The embodiments of the present invention provide a control method, a control device, and a vehicle for an active air intake grille, so as to at least solve the technical problem in the prior art that the control strategy of the active air intake grille cannot achieve the optimal comprehensive energy consumption of the entire vehicle.

[0005] According to one aspect of an embodiment of the present invention, a control method for an active air intake grille is provided, comprising: obtaining thermal management operating condition information of a target vehicle, wherein the thermal management operating condition information includes: a power system cooling mode, an air conditioning refrigeration mode, and a heat pump air conditioning heating mode; obtaining operating condition information of the target vehicle, wherein the operating condition information includes: ambient temperature, vehicle speed, heat generation of an electric drive assembly, and a coolant temperature at a radiator outlet; generating a control strategy based on the thermal management operating condition information, the operating condition information, a first simulation model, and at least part of a second simulation model, the control strategy being used to control the opening angle of the active air intake grille, wherein the first simulation model is used to characterize a mapping relationship between the heat generation of the electric drive assembly, vehicle speed, grille opening, and coolant temperature at a radiator outlet, and the second simulation model is used to characterize a mapping relationship between ambient temperature, vehicle speed, grille opening, vehicle air resistance energy consumption, and thermal management energy consumption.

[0006] Furthermore, based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, a control strategy is generated, and the control strategy is used to control the opening angle of the active air intake grille, including: when the target vehicle is in the power system cooling mode, based on the heat generation of the electric drive assembly, the vehicle speed and the first simulation model, obtaining a relationship curve between the first opening information of the active air intake grille and the coolant temperature at the radiator outlet; based on the relationship curve, determining the opening angle of the active air intake grille.

[0007] Furthermore, based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, a control strategy is generated, and the control strategy is used to control the opening angle of the active air intake grille, including: when the target vehicle is in the air-conditioning cooling mode, judging whether the coolant temperature at the radiator outlet is greater than or equal to the preset temperature; if not, judging whether the vehicle speed is greater than or equal to the preset speed; if yes, determining the opening angle of the active air intake grille according to the first calibrated opening value, wherein the first calibrated opening value is used to characterize the first grille opening value corresponding to different coolant temperatures at the radiator outlet in the air-conditioning cooling mode.

[0008] Furthermore, based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, a control strategy is generated, and the control strategy is used to control the opening angle of the active air intake grille, including: when the target vehicle is in the air-conditioning cooling mode, determining whether the coolant temperature at the radiator outlet is greater than or equal to the preset temperature; if not, determining whether the vehicle speed is greater than or equal to the preset speed; if not, the opening angle of the active air intake grille is the maximum angle.

[0009] Furthermore, based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, a control strategy is generated, and the control strategy is used to control the opening angle of the active air intake grille, including: when the target vehicle is in the air-conditioning cooling mode, determining whether the coolant temperature at the radiator outlet is less than or equal to the preset temperature; if so, the opening angle of the active air intake grille is the maximum angle.

[0010] Furthermore, based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, a control strategy is generated, and the control strategy is used to control the opening angle of the active air intake grille, including: when the target vehicle is in the air-conditioning cooling mode and the power system cooling mode, judging whether the coolant temperature at the radiator outlet is greater than or equal to the preset temperature; if not, judging whether the vehicle speed is greater than or equal to the preset speed; if yes, determining the maximum value of the second calibrated opening value and the third calibrated opening value as the opening angle of the active air intake grille, wherein the second calibrated opening value is used to characterize the second grille opening value corresponding to different coolant temperatures at the radiator outlet in the air-conditioning cooling mode, and the third calibrated opening value is used to characterize the third grille opening value corresponding to different coolant temperatures at the radiator outlet in the power system cooling mode.

[0011] Furthermore, based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, a control strategy is generated, and the control strategy is used to control the opening angle of the active air intake grille, including: when the target vehicle is in the air-conditioning cooling mode and the power system cooling mode, determining whether the coolant temperature at the radiator outlet is greater than or equal to the preset temperature; if not, determining whether the vehicle speed is greater than or equal to the preset speed; if not, the opening angle of the active air intake grille is the maximum angle.

[0012] Furthermore, based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, a control strategy is generated, and the control strategy is used to control the opening angle of the active air intake grille, including: when the target vehicle is in the air-conditioning cooling mode and the power system cooling mode, determining whether the coolant temperature at the radiator outlet is greater than or equal to the preset temperature; if so, the opening angle of the active air intake grille is the maximum angle.

[0013] Furthermore, based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, a control strategy is generated, and the control strategy is used to control the opening angle of the active air intake grille, including: when the target vehicle is in the heat pump air conditioning heating mode, based on the vehicle speed, the ambient temperature and the second simulation model, obtaining multiple sets of energy consumption values, wherein the energy consumption value is the sum of the air resistance energy consumption and the thermal management energy consumption of the entire vehicle; and determining the grille opening corresponding to the minimum value among the multiple sets of energy consumption values ​​as the opening angle of the active air intake grille.

[0014] According to another aspect of an embodiment of the present invention, a control device for an active air intake grille is also provided, including: a first acquisition module, the first acquisition module is used to obtain thermal management operating condition information of a target vehicle, wherein the thermal management operating condition information includes: a power system cooling mode, an air conditioning cooling mode, and a heat pump air conditioning heating mode; a second acquisition module, the second acquisition module is used to obtain operating condition information of the target vehicle, wherein the operating condition information includes: ambient temperature, vehicle speed, heat generation of the electric drive assembly, and coolant temperature at the radiator outlet; a generation module, the generation module is used to generate a control strategy based on the thermal management operating condition information, the operating condition information, the first simulation model, and at least part of the second simulation model, the control strategy being used to control the opening angle of the active air intake grille, wherein the first simulation model is used to characterize the mapping relationship between the heat generation of the electric drive assembly, the vehicle speed, the grille opening, and the coolant temperature at the radiator outlet, and the second simulation model is used to characterize the mapping relationship between the ambient temperature, the vehicle speed, the grille opening, the air resistance energy consumption of the entire vehicle, and the thermal management energy consumption.

[0015] According to another aspect of an embodiment of the present invention, a vehicle is provided, wherein the active air intake grille of the vehicle is controlled using the above-mentioned control method.

[0016] In an embodiment of the present invention, in a high-temperature environment, air conditioning refrigeration and power system cooling become the main challenges of thermal management. By obtaining the heat generation of the electric drive assembly and the vehicle speed, the first simulation model is used to predict the effect of different grille openings on the heat dissipation effect. While meeting the cooling demand, the wind resistance is reduced, and the additional energy consumption during the summer cooling period is effectively reduced, thereby improving the high-temperature endurance of the electric vehicle. In a low-temperature environment, the heating efficiency of the heat pump air conditioner is particularly important. By obtaining the ambient temperature and vehicle speed, the second simulation model is used to predict the relationship between different grille openings and the air resistance energy consumption and thermal management energy consumption of the entire vehicle. While meeting the heating demand, the air resistance energy consumption and thermal management energy consumption of the entire vehicle are reduced, so that the overall energy consumption of the entire vehicle is optimized, thereby improving the low-temperature endurance of the electric vehicle. In the above scheme, by dynamically adjusting the opening of the active air intake grille, the optimal balance between the thermal management system and aerodynamic performance under different working conditions is achieved, thereby effectively reducing the energy consumption of the entire vehicle and improving the endurance of the electric vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 is a hardware structure block diagram of a computer terminal (or mobile device) for implementing a control method for an active air intake grille according to an embodiment of the present invention;

[0019] Figure 2 is a structural block diagram of a coolant indirect heat exchange system according to an embodiment of the present invention;

[0020] Figure 3 is a flow chart of a method for controlling an active air intake grille according to an embodiment of the present invention;

[0021] Figure 4 4 is a structural block diagram of a control device for an active air intake grille according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0023] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] According to an embodiment of the present invention, an embodiment of a method for controlling an active air intake grille is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0025] Figure 1 FIG is a hardware structure block diagram of a computer terminal (or mobile device) for implementing a control method for an active air intake grille according to an embodiment of the present invention. Figure 1As shown, the computer terminal (or mobile device) may include one or more processors 102 (the processor may include but is not limited to a central processing unit (CPU), a graphics processing unit (GPU), a digital signal processing (DSP) chip, a microprocessor (MCU), a field-programmable logic device (FPGA), a neural network processor (NPU), a tensor processing unit (TPU), an artificial intelligence (AI) type processor, etc.) and a memory 104 for storing data. In addition, it may also include a transmission device 106 for communication functions, an input and output device 108, and a display 110. It will be understood by those skilled in the art that Figure 1 The structure shown is for illustration only and does not limit the structure of the computer terminal (or mobile device). For example, the computer terminal may include more or fewer components than those described above, or have a configuration different from that described above.

[0026] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the control method of the active air intake grille in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, implements the control method of the active air intake grille described above. The memory 104 may include a high-speed random access memory and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely located relative to the processor 102, and these remote memories may be connected to the mobile terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0027] The transmission device 106 is used to receive or send data via a network. A specific example of the aforementioned network may include a wireless network provided by the mobile terminal's communications provider. In one embodiment, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0028] The display 110 may be a touch screen liquid crystal display (LCD). The LCD may enable a user to interact with a user interface of the mobile terminal. In some embodiments, the mobile terminal may include a graphical user interface (GUI), and a user may interact with the GUI by finger contact and / or gestures on a touch-sensitive surface. The human-computer interaction functions herein may optionally include the following interactions: creating web pages, drawing, word processing, creating electronic documents, gaming, video conferencing, instant messaging, sending and receiving emails, call interfaces, playing digital videos, playing digital music, and / or web browsing. Executable instructions for performing the above human-computer interaction functions are configured / stored in a computer program product or readable storage medium executable by one or more processors.

[0029] Figure 2 FIG. 1 is a structural block diagram of a coolant indirect heat exchange system according to one embodiment of the present invention. Figure 2 As shown, the coolant indirect heat exchange system mainly includes: electric drive assembly, low-temperature radiator, motor water pump, nine-way valve, battery water pump, power battery, three-way valve, one-way valve, PTC heater, heater water pump, water-cooled condenser, compressor, expansion valve, evaporator, heater core and battery cooler.

[0030] Electric vehicles through Figure 2 The coolant indirect heat exchange system shown implements thermal management, which involves the following operating conditions: air conditioning cooling mode, power system cooling mode, air conditioning cooling + power system cooling mode, and heat pump air conditioning heating mode. The heat exchange circuits of these thermal management modes are introduced one by one:

[0031] Air conditioning refrigeration mode: The coolant flows through the compressor, water-cooled condenser, expansion valve and evaporator in sequence, and then flows back to the compressor. The evaporator exchanges heat with the air in the passenger compartment to achieve cooling of the passenger compartment; among them, the water-cooled condenser exchanges heat through water cooling. Specifically, the cooling water flows through the water-cooled condenser, nine-way valve, low-temperature radiator, motor water pump, and electric drive assembly in sequence, and then flows back to the water-cooled condenser through the nine-way valve to achieve cooling of the water-cooled condenser.

[0032] The coolant flows through the compressor, water-cooled condenser, expansion valve and battery cooler in sequence, and then flows back to the compressor. The battery cooler exchanges heat with the battery to achieve battery cooling. Among them, the water-cooled condenser exchanges heat through water cooling. Specifically, the cooling water flows through the water-cooled condenser, nine-way valve, low-temperature radiator, motor water pump, and electric drive assembly in sequence, and then flows back to the water-cooled condenser through the nine-way valve to achieve cooling of the water-cooled condenser.

[0033] Power system cooling mode: The cooling water passes through the nine-way valve, low-temperature radiator, motor water pump and electric drive assembly in sequence, and then flows back to the low-temperature radiator through the nine-way valve.

[0034] Heat pump air conditioning heating mode: The coolant flows through the low-temperature radiator to absorb heat from the external environment, then flows through the electric drive assembly to absorb waste heat from the motor, and enters the battery cooler through the nine-way valve to exchange heat to the refrigerant circuit of the air-conditioning system (battery cooler-water-cooled condenser-compressor-expansion valve-battery cooler); among them, the heat in the water-cooled condenser is exchanged to the battery heating circuit (battery water pump-power battery-three-way valve-check valve-water-cooled condenser-PTC-nine-way valve) through the nine-way valve, and the heat in the water-cooled condenser is exchanged to the warm air circuit (warm air water pump-warm air core-check valve-nine-way valve) through the nine-way valve.

[0035] In each of the above heat exchange modes, the low-temperature radiator dissipates heat through air cooling, that is, the water temperature of the low-temperature radiator is adjusted by controlling the opening angle of the grille.

[0036] Figure 3 FIG. 1 is a flow chart of a method for controlling an active air intake grille according to one embodiment of the present invention. Figure 3 As shown, the process includes the following steps:

[0037] Step S1: Acquire thermal management operating condition information of a target vehicle, wherein the thermal management operating condition information includes: power system cooling mode, air conditioning refrigeration mode, and heat pump air conditioning heating mode.

[0038] Specifically, powertrain cooling mode recognition: An internal temperature sensor collects real-time battery pack temperature data. If the battery temperature approaches or exceeds the upper limit of the optimal operating temperature range (e.g., 30°C to 45°C), the vehicle is determined to be in battery cooling mode, activating the cooling system to maintain a stable battery temperature. Air conditioning cooling mode recognition: An internal temperature sensor monitors the cabin temperature and compares it with the passenger's comfort level. If the cabin temperature exceeds the set value, the system enters air conditioning cooling mode. Heat pump heating mode recognition: An external temperature sensor monitors the ambient temperature in real time. If the temperature falls below a certain threshold (e.g., below 10°C), the system predicts that heat pump heating mode may be necessary to heat the cabin and battery. Alternatively, an internal temperature sensor continuously monitors the cabin temperature and compares it with a passenger-set upper temperature (e.g., 22°C). If the cabin temperature falls below the set value and the ambient temperature is lower, the system enters heat pump heating mode, using heat pump principles to extract heat from the outside air or waste heat from the electric drive system to heat the cabin and battery.

[0039] Step S2: Obtain operating condition information of the target vehicle, wherein the operating condition information includes: ambient temperature, vehicle speed, heat generation of the electric drive assembly, and coolant temperature at the radiator outlet.

[0040] Specifically, the temperature of the surrounding environment is monitored through a temperature sensor, the real-time vehicle speed is obtained through the instrument panel, and the coolant temperature at the radiator outlet is monitored through a temperature sensor at the radiator outlet; based on the instantaneous speed and output torque of the electric drive assembly, the current and voltage of the electric drive assembly at a specific moment, and the electric drive efficiency map, the input power of the electric drive assembly and the effective output power of the electric drive assembly are calculated. The difference between the input power of the electric drive assembly and the effective output power of the electric drive assembly is the heat generation of the electric drive assembly.

[0041] Step S3: Based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, a control strategy is generated, where the control strategy is used to control the opening angle of the active air intake grille, wherein the first simulation model is used to characterize the mapping relationship between the heat generation of the electric drive assembly, the vehicle speed, the grille opening and the coolant temperature at the radiator outlet, and the second simulation model is used to characterize the mapping relationship between the ambient temperature, the vehicle speed, the grille opening, the air resistance energy consumption of the entire vehicle and the thermal management energy consumption.

[0042] In an embodiment of the present application, in high-temperature environments, air conditioning refrigeration and power system cooling become the main challenges of thermal management. By obtaining the heat generation of the electric drive assembly and the vehicle speed, a first simulation model is used to predict the effect of different grille openings on the heat dissipation effect. While meeting the cooling demand, the wind resistance is reduced, effectively reducing the additional energy consumption during the summer cooling period, thereby improving the high-temperature endurance of the electric vehicle. In low-temperature environments, the heating efficiency of the heat pump air conditioner is particularly important. By obtaining the ambient temperature and vehicle speed, a second simulation model is used to predict the relationship between different grille openings and the vehicle's air resistance energy consumption and thermal management energy consumption. While meeting the heating demand, the vehicle's air resistance energy consumption and thermal management energy consumption are reduced to optimize the vehicle's overall energy consumption, thereby improving the electric vehicle's low-temperature endurance. In the above scheme, by dynamically adjusting the opening of the active air intake grille, an optimal balance between the thermal management system and aerodynamic performance is achieved under different operating conditions, thereby effectively reducing the vehicle's energy consumption and improving the electric vehicle's range.

[0043] In an exemplary embodiment of the present application, step S3 generates a control strategy based on the thermal management condition information, the operating condition information, the first simulation model, and at least a portion of the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, and includes the following steps:

[0044] Step S311: When the target vehicle is in the power system cooling mode, a relationship curve between first opening information of the active air intake grille and the coolant temperature at the radiator outlet is obtained based on the heat generation of the electric drive assembly, the vehicle speed, and the first simulation model.

[0045] Step S312: Determine the opening angle of the active air intake grille based on the relationship curve.

[0046] In an embodiment of the present application, by establishing a relationship curve between the first opening information and the coolant temperature at the radiator outlet, the opening of the active air intake grille is precisely adjusted according to the real-time heat generation of the electric drive assembly and the vehicle speed, ensuring that the cooling system can effectively remove excess heat without introducing too much unnecessary air, thereby reducing the additional energy consumption caused by wind resistance, saving electricity, and extending the cruising range of the electric vehicle.

[0047] It should be noted that, from the relationship curve between the first opening information and the radiator outlet coolant temperature, it can be seen that if the grille opening corresponding to the radiator outlet coolant temperature less than T1 meets the usage conditions, then in order to reduce the additional energy consumption caused by wind resistance, the minimum grille opening that meets the usage conditions will be used as the opening angle of the active air intake grille.

[0048] Specifically, the simulation process of the first simulation model is as follows:

[0049] First, calculate the cooling module air intake volume when the vehicle speed is 0 kph to 140 kph and the grille opening is 10° to 90°, as shown in Table 1.

[0050] Table 1

[0051]

[0052] Based on the heat generation of the electric drive assembly and the vehicle speed, the cooling module air intake corresponding to the above eight grille openings was simulated, and a one-dimensional heat balance simulation was performed to simulate the coolant temperature at the radiator outlet under different grille openings corresponding to the air intake, as shown in Table 2.

[0053] Table 2

[0054] Grille opening° Air intake Radiator outlet water temperature 0 Mxy1 T_OUT1 10 Mxy2 T_OUT2 20 Mxy3 T_OUT3 30 Mxy4 T_OUT4 40 Mxy5 T_OUT5 50 Mxy6 T_OUT6 60 Mxy7 T_OUT7 70 Mxy8 T_OUT8 80 Mxy9 T_OUT9 90 Mxy10 T_OUT10

[0055] Finally, a curve is plotted showing the relationship between grille opening and the coolant temperature at the radiator outlet based on Table 2. The active grille opening angle is then determined based on this curve. For example, if the grille openings required to ensure the coolant temperature at the radiator outlet is less than T1 are 50°, 60°, 70°, 80°, and 90°, the active grille opening angle is set to 50°.

[0056] In an exemplary embodiment of the present application, step S3 generates a control strategy based on the thermal management condition information, the operating condition information, the first simulation model, and at least a portion of the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, and includes the following steps:

[0057] Step S321: When the target vehicle is in the air conditioning cooling mode, determine whether the coolant temperature at the radiator outlet is greater than or equal to a preset temperature.

[0058] Step S322: If not, determine whether the vehicle speed is greater than or equal to the preset vehicle speed.

[0059] Step S323: If yes, determine the opening angle of the active air intake grille according to the first calibrated opening value, wherein the first calibrated opening value is used to represent the first grille opening value corresponding to different coolant temperatures at the radiator outlet in the air conditioning cooling mode.

[0060] It should be noted that the first calibrated opening value may be calibrated according to driving experience or historical values.

[0061] In an embodiment of the present application, in the air conditioning cooling mode, the system first determines whether the coolant temperature at the radiator outlet exceeds a preset temperature threshold, ensuring that the vehicle can dynamically adjust the opening of the air intake grille according to the actual cooling demand to avoid overcooling or insufficient cooling, thereby improving the cooling efficiency of the air conditioning system. When driving at high speeds, the vehicle's wind resistance has a greater impact on energy consumption. If the vehicle speed is higher than the preset value, the system will use a first calibrated opening value to control the opening of the active air intake grille to minimize wind resistance while ensuring air conditioning performance, reduce unnecessary energy consumption, and thus help extend the cruising range of the electric vehicle. This embodiment can effectively avoid excessive opening of the grille when excessive cooling is not required, reduce unnecessary load on the thermal management system, protect the cooling system from damage caused by overcooling, and extend the service life of the system and components.

[0062] In an exemplary embodiment of the present application, step S3 generates a control strategy based on the thermal management condition information, the operating condition information, the first simulation model, and at least a portion of the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, and includes the following steps:

[0063] Step S331: When the target vehicle is in the air conditioning cooling mode, determine whether the coolant temperature at the radiator outlet is greater than or equal to a preset temperature.

[0064] Step S332: If not, determine whether the vehicle speed is greater than or equal to the preset vehicle speed.

[0065] Step S333: If not, the opening angle of the active air intake grille is the maximum angle.

[0066] In an embodiment of the present application, in air conditioning cooling mode, the coolant temperature at the radiator outlet is monitored to see if it reaches or exceeds a preset temperature. If the coolant temperature does not reach the preset threshold, the current air conditioning cooling effect is good and no additional coolant flow is needed. When the coolant temperature at the radiator outlet is below the preset temperature, the system further determines whether the vehicle speed exceeds a preset speed. If the speed is below the preset value, indicating that the vehicle is at low speed or stationary, the active air intake grille is adjusted to its maximum opening angle. This decision is based on the principle that wind resistance has a minimal impact on energy consumption at low speeds. By maximizing the air flow required for coolant circulation, cooling efficiency is improved and overload of the air conditioning system due to insufficient cooling is avoided.

[0067] In an exemplary embodiment of the present application, step S3 generates a control strategy based on the thermal management condition information, the operating condition information, the first simulation model, and at least a portion of the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, and includes the following steps:

[0068] Step S341: When the target vehicle is in the air conditioning cooling mode, determine whether the coolant temperature at the radiator outlet is less than or equal to a preset temperature.

[0069] Step S342: If yes, the opening angle of the active air intake grille is the maximum angle.

[0070] In an embodiment of the present application, in the air-conditioning cooling mode, the coolant temperature at the radiator outlet is monitored to see if it reaches or exceeds a preset temperature. If the coolant temperature exceeds the preset threshold, it indicates that the air-conditioning system is operating efficiently and requires a large amount of outside air for heat exchange to maintain the cooling effect. Therefore, the opening angle of the active air intake grille is immediately adjusted to the maximum angle to ensure that under working conditions requiring a large amount of cooling effect, the air intake grille can provide sufficient air circulation to promote heat exchange between the coolant and the outside air, quickly reduce the cabin and battery temperature, and improve passenger comfort and battery performance.

[0071] In an exemplary embodiment of the present application, step S3 generates a control strategy based on the thermal management condition information, the operating condition information, the first simulation model, and at least a portion of the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, and includes the following steps:

[0072] Step S351: When the target vehicle is in the air conditioning cooling mode and the power system cooling mode, determine whether the coolant temperature at the radiator outlet is greater than or equal to a preset temperature.

[0073] Step S352: If not, determine whether the vehicle speed is greater than or equal to the preset vehicle speed.

[0074] Step S353: If yes, the maximum value of the second calibrated opening value and the third calibrated opening value is determined as the opening angle of the active air intake grille, wherein the second calibrated opening value is used to represent the second grille opening value corresponding to the coolant temperature at different radiator outlets in the air-conditioning cooling mode, and the third calibrated opening value is used to represent the third grille opening value corresponding to the coolant temperature at different radiator outlets in the power system cooling mode.

[0075] In an embodiment of the present application, when the target vehicle is simultaneously in air conditioning cooling mode and electric drive system cooling mode, the radiator outlet coolant temperature is monitored to see if it exceeds a preset temperature threshold. This ensures that the thermal management system can maintain optimal operating conditions even when dual cooling requirements are combined, avoiding system performance degradation or component overheating caused by excessive coolant temperature. If the radiator outlet coolant temperature has not yet reached the preset value, a further determination is made as to whether the vehicle speed has reached a preset standard. This judgment mechanism enables the opening of the active air intake grille to be dynamically adjusted based on the current vehicle speed, thereby meeting cooling requirements while minimizing energy consumption due to wind resistance. The maximum of the second calibrated opening value (the opening in air conditioning cooling mode) and the third calibrated opening value (the opening in powertrain cooling mode) is used as the actual opening angle of the active air intake grille. This not only effectively coordinates and meets dual cooling requirements, avoiding system overheating or performance degradation caused by insufficient opening, but also avoids energy waste caused by excessive opening, achieving an optimal balance between the thermal management system and aerodynamic performance.

[0076] In an exemplary embodiment of the present application, step S3 generates a control strategy based on the thermal management condition information, the operating condition information, the first simulation model, and at least a portion of the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, and includes the following steps:

[0077] Step S361: When the target vehicle is in the air-conditioning cooling mode and the power system cooling mode, determine whether the coolant temperature at the radiator outlet is greater than or equal to a preset temperature.

[0078] Step S362: If not, determine whether the vehicle speed is greater than or equal to the preset vehicle speed.

[0079] Step S363: If not, the opening angle of the active air intake grille is the maximum angle.

[0080] In an embodiment of the present application, when the target vehicle is simultaneously operating in air conditioning cooling and electric drive system cooling modes, the system monitors whether the coolant temperature at the radiator outlet exceeds a preset threshold. This ensures that the thermal management system maintains optimal operating conditions even when dual cooling demands are combined, preventing system performance degradation or component overheating caused by excessively high coolant temperatures. If the coolant temperature at the radiator outlet has not yet reached the preset threshold, the system further determines whether the vehicle speed has reached a preset standard. If the speed is below the preset threshold, indicating that the vehicle is at low speed or stationary, the active grille is adjusted to its maximum opening angle. This decision is based on the principle that wind resistance has a minimal impact on energy consumption at low speeds. By maximizing the air flow required for coolant circulation, the system can quickly respond to scenarios with high heat loads or requiring rapid cooling, such as battery cooling after intense driving or rapid cabin cooling during air conditioning startup, thereby improving the user experience.

[0081] In an exemplary embodiment of the present application, step S3 generates a control strategy based on the thermal management condition information, the operating condition information, the first simulation model, and at least a portion of the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, and includes the following steps:

[0082] Step S371: When the target vehicle is in the air conditioning cooling mode and the power system cooling mode, determine whether the coolant temperature at the radiator outlet is greater than or equal to a preset temperature.

[0083] Step S372: If yes, the opening angle of the active air intake grille is the maximum angle.

[0084] In an embodiment of the present application, when the target vehicle is in air-conditioning cooling and electric drive system cooling modes at the same time, the coolant temperature at the radiator outlet is monitored to see if it exceeds a preset temperature threshold. If the coolant temperature exceeds the preset threshold, it indicates that the thermal management system of the electric vehicle is facing a high-load condition, such as battery overheating, increased temperature of the electric drive system, etc. At this time, the opening angle of the active air intake grille is adjusted to the maximum, which can quickly introduce a large amount of outside air and enhance heat exchange, thereby quickly reducing the coolant temperature, ensuring that key components such as the electric drive system and battery are within a safe operating temperature range, and avoiding performance degradation or system failure due to overheating.

[0085] In an exemplary embodiment of the present application, step S3 generates a control strategy based on the thermal management condition information, the operating condition information, the first simulation model, and at least a portion of the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, and includes the following steps:

[0086] Step S381: When the target vehicle is in heat pump air conditioning heating mode, multiple sets of energy consumption values ​​are obtained based on vehicle speed, ambient temperature and the second simulation model, where the energy consumption value is the sum of the vehicle's air resistance energy consumption and thermal management energy consumption.

[0087] Step S382: Determine the grille opening corresponding to the minimum value among the multiple groups of energy consumption values ​​as the opening angle of the active air intake grille.

[0088] In an embodiment of the present application, in the heat pump air conditioning heating mode, the system evaluates the air resistance energy consumption and thermal management energy consumption of the whole vehicle at different vehicle speeds and ambient temperatures based on the second simulation model, obtains multiple sets of energy consumption values, and predicts the impact of the opening angle of the active air intake grille on the comprehensive energy consumption of the whole vehicle under specific conditions through simulation; the system further selects the group with the smallest energy consumption value, and determines the corresponding active air intake grille opening as the optimal opening. This opening is selected on the basis of meeting the heating needs of the heat pump air conditioning, by weighing the air resistance energy consumption and thermal management energy consumption, and finding a balance between the two, aiming to achieve the optimal thermal management effect with the lowest energy consumption, thereby effectively extending the cruising range of electric vehicles and improving energy utilization efficiency.

[0089] Specifically, the simulation process of the second simulation model is as follows:

[0090] First, the drag coefficient is calculated for vehicle speeds ranging from 0 kph to 140 kph and grille openings ranging from 10° to 90°, as shown in Table 3.

[0091] Table 3

[0092]

[0093] Based on the drag coefficient and vehicle speed, the vehicle's air resistance and the corresponding energy consumption for changes in air resistance were calculated for grille openings ranging from 10° to 90°. A one-dimensional system simulation was performed based on the ambient temperature to simulate the energy consumption of the thermal management system in heating mode for the current ambient temperature and a grille opening ranging from 10° to 90°, as shown in Table 4.

[0094] Table 4

[0095]

[0096] Based on Table 4, the grille opening corresponding to the lowest comprehensive energy consumption is used as the opening angle of the active air intake grille.

[0097] The embodiment of the present application also provides a control device for an active air intake grille, Figure 4 This is the structural block diagram of the control device, such as Figure 4 As shown, the device includes: a first acquisition module, a second acquisition module and a generation module.

[0098] The first acquisition module is used to acquire thermal management operating condition information of the target vehicle, wherein the thermal management operating condition information includes: power system cooling mode, air conditioning refrigeration mode and heat pump air conditioning heating mode.

[0099] The second acquisition module is used to obtain the operating condition information of the target vehicle, wherein the operating condition information includes: ambient temperature, vehicle speed, heat generation of the electric drive assembly, and coolant temperature at the radiator outlet.

[0100] The generation module is used to generate a control strategy based on thermal management operating condition information, operating condition information, a first simulation model, and at least part of the second simulation model. The control strategy is used to control the opening angle of the active air intake grille. The first simulation model is used to characterize the mapping relationship between the heat generation of the electric drive assembly, vehicle speed, grille opening, and coolant temperature at the radiator outlet. The second simulation model is used to characterize the mapping relationship between ambient temperature, vehicle speed, grille opening, vehicle air resistance energy consumption, and thermal management energy consumption.

[0101] In an embodiment of the present application, the first acquisition module, the second acquisition module and the generation module are combined to dynamically adjust the opening of the active air intake grille to achieve the optimal balance between the thermal management system and aerodynamic performance under different working conditions, thereby effectively reducing the energy consumption of the entire vehicle and improving the cruising range of the electric vehicle.

[0102] An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program is configured to execute the steps of any of the above method embodiments when run.

[0103] In this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0104] Step S1: Acquire thermal management operating condition information of a target vehicle, wherein the thermal management operating condition information includes: power system cooling mode, air conditioning refrigeration mode, and heat pump air conditioning heating mode.

[0105] Step S2: Obtain operating condition information of the target vehicle, wherein the operating condition information includes: ambient temperature, vehicle speed, heat generation of the electric drive assembly, and coolant temperature at the radiator outlet.

[0106] Step S3: Based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, a control strategy is generated, where the control strategy is used to control the opening angle of the active air intake grille, wherein the first simulation model is used to characterize the mapping relationship between the heat generation of the electric drive assembly, the vehicle speed, the grille opening and the coolant temperature at the radiator outlet, and the second simulation model is used to characterize the mapping relationship between the ambient temperature, the vehicle speed, the grille opening, the air resistance energy consumption of the entire vehicle and the thermal management energy consumption.

[0107] In an embodiment of the present application, in high-temperature environments, air conditioning refrigeration and power system cooling become the main challenges of thermal management. By obtaining the heat generation of the electric drive assembly and the vehicle speed, a first simulation model is used to predict the effect of different grille openings on the heat dissipation effect. While meeting the cooling demand, the wind resistance is reduced, effectively reducing the additional energy consumption during the summer cooling period, thereby improving the high-temperature endurance of the electric vehicle. In low-temperature environments, the heating efficiency of the heat pump air conditioner is particularly important. By obtaining the ambient temperature and vehicle speed, a second simulation model is used to predict the relationship between different grille openings and the vehicle's air resistance energy consumption and thermal management energy consumption. While meeting the heating demand, the vehicle's air resistance energy consumption and thermal management energy consumption are reduced to optimize the vehicle's overall energy consumption, thereby improving the electric vehicle's low-temperature endurance. In the above scheme, by dynamically adjusting the opening of the active air intake grille, an optimal balance between the thermal management system and aerodynamic performance is achieved under different operating conditions, thereby effectively reducing the vehicle's energy consumption and improving the electric vehicle's range.

[0108] An embodiment of the present application further provides a processor, which is configured to run a computer program to execute the steps in any of the above method embodiments.

[0109] In this embodiment, the processor may be configured to execute the following steps through a computer program:

[0110] Step S1: Acquire thermal management operating condition information of a target vehicle, wherein the thermal management operating condition information includes: power system cooling mode, air conditioning refrigeration mode, and heat pump air conditioning heating mode.

[0111] Step S2: Obtain operating condition information of the target vehicle, wherein the operating condition information includes: ambient temperature, vehicle speed, heat generation of the electric drive assembly, and coolant temperature at the radiator outlet.

[0112] Step S3: Based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, a control strategy is generated, where the control strategy is used to control the opening angle of the active air intake grille, wherein the first simulation model is used to characterize the mapping relationship between the heat generation of the electric drive assembly, the vehicle speed, the grille opening and the coolant temperature at the radiator outlet, and the second simulation model is used to characterize the mapping relationship between the ambient temperature, the vehicle speed, the grille opening, the air resistance energy consumption of the entire vehicle and the thermal management energy consumption.

[0113] In an embodiment of the present application, in high-temperature environments, air conditioning refrigeration and power system cooling become the main challenges of thermal management. By obtaining the heat generation of the electric drive assembly and the vehicle speed, a first simulation model is used to predict the effect of different grille openings on the heat dissipation effect. While meeting the cooling demand, the wind resistance is reduced, effectively reducing the additional energy consumption during the summer cooling period, thereby improving the high-temperature endurance of the electric vehicle. In low-temperature environments, the heating efficiency of the heat pump air conditioner is particularly important. By obtaining the ambient temperature and vehicle speed, a second simulation model is used to predict the relationship between different grille openings and the vehicle's air resistance energy consumption and thermal management energy consumption. While meeting the heating demand, the vehicle's air resistance energy consumption and thermal management energy consumption are reduced to optimize the vehicle's overall energy consumption, thereby improving the electric vehicle's low-temperature endurance. In the above scheme, by dynamically adjusting the opening of the active air intake grille, an optimal balance between the thermal management system and aerodynamic performance is achieved under different operating conditions, thereby effectively reducing the vehicle's energy consumption and improving the electric vehicle's range.

[0114] An embodiment of the present application further provides a computer program product, comprising computer instructions, which implement the steps of any of the above method embodiments when executed by a processor.

[0115] In this embodiment, the above computer instructions may be configured as a computer program for executing the following steps:

[0116] Step S1: Acquire thermal management operating condition information of a target vehicle, wherein the thermal management operating condition information includes: power system cooling mode, air conditioning refrigeration mode, and heat pump air conditioning heating mode.

[0117] Step S2: Obtain operating condition information of the target vehicle, wherein the operating condition information includes: ambient temperature, vehicle speed, heat generation of the electric drive assembly, and coolant temperature at the radiator outlet.

[0118] Step S3: Based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, a control strategy is generated, where the control strategy is used to control the opening angle of the active air intake grille, wherein the first simulation model is used to characterize the mapping relationship between the heat generation of the electric drive assembly, the vehicle speed, the grille opening and the coolant temperature at the radiator outlet, and the second simulation model is used to characterize the mapping relationship between the ambient temperature, the vehicle speed, the grille opening, the air resistance energy consumption of the entire vehicle and the thermal management energy consumption.

[0119] In an embodiment of the present application, in high-temperature environments, air conditioning refrigeration and power system cooling become the main challenges of thermal management. By obtaining the heat generation of the electric drive assembly and the vehicle speed, a first simulation model is used to predict the effect of different grille openings on the heat dissipation effect. While meeting the cooling demand, the wind resistance is reduced, effectively reducing the additional energy consumption during the summer cooling period, thereby improving the high-temperature endurance of the electric vehicle. In low-temperature environments, the heating efficiency of the heat pump air conditioner is particularly important. By obtaining the ambient temperature and vehicle speed, a second simulation model is used to predict the relationship between different grille openings and the vehicle's air resistance energy consumption and thermal management energy consumption. While meeting the heating demand, the vehicle's air resistance energy consumption and thermal management energy consumption are reduced to optimize the vehicle's overall energy consumption, thereby improving the electric vehicle's low-temperature endurance. In the above scheme, by dynamically adjusting the opening of the active air intake grille, an optimal balance between the thermal management system and aerodynamic performance is achieved under different operating conditions, thereby effectively reducing the vehicle's energy consumption and improving the electric vehicle's range.

[0120] An embodiment of the present application also provides a vehicle, wherein the active air intake grille of the vehicle is controlled using the above-mentioned control method.

[0121] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0122] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0123] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0124] The units described as separate components may or may not be physically separate, and 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 units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0125] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0126] If the integrated unit is implemented in the form of 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 the present invention, 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. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc. Various media that can store program codes.

[0127] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A control method for an active air intake grille, characterized in that: include: Acquiring thermal management operating condition information of the target vehicle, wherein the thermal management operating condition information includes: power system cooling mode, air conditioning refrigeration mode, and heat pump air conditioning heating mode; Obtaining operating condition information of the target vehicle, wherein the operating condition information includes: ambient temperature, vehicle speed, heat generation of the electric drive assembly, and coolant temperature at the radiator outlet; Based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, a control strategy is generated, wherein the control strategy is used to control the opening angle of the active air intake grille, wherein the first simulation model is used to characterize the mapping relationship between the heat generation of the electric drive assembly, the vehicle speed, the grille opening and the coolant temperature at the radiator outlet, and the second simulation model is used to characterize the mapping relationship between the ambient temperature, the vehicle speed, the grille opening, the air resistance energy consumption of the entire vehicle and the thermal management energy consumption.

2. The control method according to claim 1, characterized in that: Generating a control strategy based on at least a portion of the thermal management operating condition information, the operating condition information, the first simulation model, and the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, including: When the target vehicle is in the power system cooling mode, obtaining a relationship curve between first opening information of the active air intake grille and the coolant temperature at the radiator outlet based on the heat generation of the electric drive assembly, the vehicle speed, and the first simulation model; Based on the relationship curve, an opening angle of the active air intake grille is determined.

3. The control method according to claim 1, wherein: Generating a control strategy based on at least a portion of the thermal management operating condition information, the operating condition information, the first simulation model, and the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, including: When the target vehicle is in the air conditioning cooling mode, determining whether the coolant temperature at the radiator outlet is greater than or equal to a preset temperature; If not, determining whether the vehicle speed is greater than or equal to a preset vehicle speed; If yes, the opening angle of the active air intake grille is determined according to the first calibrated opening value, wherein the first calibrated opening value is used to characterize the first grille opening value corresponding to different coolant temperatures at the radiator outlet in the air-conditioning cooling mode.

4. The control method according to claim 1, wherein: Generating a control strategy based on at least a portion of the thermal management operating condition information, the operating condition information, the first simulation model, and the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, including: When the target vehicle is in the air conditioning cooling mode, determining whether the coolant temperature at the radiator outlet is greater than or equal to a preset temperature; If not, determining whether the vehicle speed is greater than or equal to a preset vehicle speed; If not, the opening angle of the active air intake grille is the maximum angle.

5. The control method according to claim 1, characterized in that: Generating a control strategy based on at least a portion of the thermal management operating condition information, the operating condition information, the first simulation model, and the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, including: When the target vehicle is in the air conditioning cooling mode, determining whether the coolant temperature at the radiator outlet is greater than or equal to a preset temperature; If yes, the opening angle of the active air intake grille is the maximum angle.

6. The control method according to claim 1, characterized in that: Generating a control strategy based on at least a portion of the thermal management operating condition information, the operating condition information, the first simulation model, and the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, including: When the target vehicle is in the air conditioning cooling mode and the power system cooling mode, determining whether the coolant temperature at the radiator outlet is greater than or equal to a preset temperature; If not, determining whether the vehicle speed is greater than or equal to a preset vehicle speed; If so, the maximum value between the second calibrated opening value and the third calibrated opening value is determined as the opening angle of the active air intake grille, wherein the second calibrated opening value is used to represent the second grille opening value corresponding to different coolant temperatures at the radiator outlet in the air-conditioning cooling mode, and the third calibrated opening value is used to represent the third grille opening value corresponding to different coolant temperatures at the radiator outlet in the power system cooling mode.

7. The control method according to claim 1, characterized in that: Generating a control strategy based on at least a portion of the thermal management operating condition information, the operating condition information, the first simulation model, and the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, including: When the target vehicle is in the air conditioning cooling mode and the power system cooling mode, determining whether the coolant temperature at the radiator outlet is greater than or equal to a preset temperature; If not, determining whether the vehicle speed is greater than or equal to a preset vehicle speed; If not, the opening angle of the active air intake grille is the maximum angle.

8. The control method according to claim 1, characterized in that: Generating a control strategy based on at least a portion of the thermal management operating condition information, the operating condition information, the first simulation model, and the second simulation model, wherein the control strategy is used to control the opening angle of the active air intake grille, including: When the target vehicle is in the heat pump air conditioning heating mode, obtaining multiple sets of energy consumption values ​​based on the vehicle speed, the ambient temperature, and the second simulation model, wherein the energy consumption value is the sum of the vehicle air resistance energy consumption and the thermal management energy consumption; The grille opening corresponding to the minimum value among the multiple groups of energy consumption values ​​is determined as the opening angle of the active air intake grille.

9. A control device for an active air intake grille, characterized in that: include: a first acquisition module, the first acquisition module being configured to acquire thermal management operating condition information of a target vehicle, wherein the thermal management operating condition information includes: a power system cooling mode, an air conditioning refrigeration mode, and a heat pump air conditioning heating mode; a second acquisition module, the second acquisition module being configured to acquire operating condition information of the target vehicle, wherein the operating condition information includes: ambient temperature, vehicle speed, heat generation of the electric drive assembly, and coolant temperature at a radiator outlet; A generation module, the generation module is used to generate a control strategy based on the thermal management operating condition information, the operating condition information, the first simulation model and at least part of the second simulation model, the control strategy is used to control the opening angle of the active air intake grille, wherein the first simulation model is used to characterize the mapping relationship between the heat generation of the electric drive assembly, the vehicle speed, the grille opening and the coolant temperature at the radiator outlet, and the second simulation model is used to characterize the mapping relationship between the ambient temperature, the vehicle speed, the grille opening, the air resistance energy consumption of the whole vehicle and the thermal management energy consumption.

10. A vehicle, characterized in that: The active air intake grille of the vehicle is controlled by the control method according to any one of claims 1 to 8.

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