Air inlet grille control method and device, medium and vehicle

Abstract

The invention relates to an air inlet grille control method and device, a medium and a vehicle. The air inlet grille control method comprises the steps that the first required opening degree of an engine side to an air inlet grille and the second required opening degree of a non-engine side to the air inlet grille are obtained; based on the first demand opening degree and the second demand opening degree, a demand master control party with the large demand opening degree is determined, and the demand master control party is the engine side or the non-engine side; and based on a control strategy under the demand master control side, the opening degree of the air inlet grille is controlled, and the control strategy is used for meeting the heat exchange demand of the demand master control side by controlling the opening degree of the air inlet grille. According to the technical scheme, the air inlet grille can be flexibly controlled, the heat exchange requirement of the engine side can be met, and the heat exchange requirement of the non-engine side can also be met.

Description

Technical Field

[0001] The present disclosure relates to the field of thermal management technology, and in particular to an air intake grille control method, device, medium and vehicle. Background Art

[0002] In recent years, with the gradual popularization of new energy vehicles, the performance of new energy vehicles has also been significantly improved. The thermal management system of new energy vehicles is a system that manages the heat of new energy vehicles. The operation of the thermal management system also has a great impact on the range of new energy vehicles. In order to make the range of new energy vehicles longer and longer, the requirements for the thermal management system of new energy vehicles are also getting higher and higher.

[0003] At present, the heat and cold requirements of the engine, battery, and cabin can be met by controlling components such as water pumps, electronic valves, cooling fans, and air intake grilles, thereby achieving thermal management of new energy vehicles. Among them, the air intake grille can affect the heat dissipation effect of the engine. The relevant technology generally divides the continuously adjustable air intake grille opening into multiple gears, obtains the gear of the air intake grille according to the actual engine outlet temperature, and performs open-loop control. The control method is single and only controls the heat exchange requirements on the engine side. When the control demand for the air intake grille on the non-engine side (such as compressor refrigerant and low-temperature circuit, etc.) is dominant (that is, the non-engine side has a larger demand for the air intake grille opening than the engine side), the heat exchange demand on the non-engine side cannot be met. Summary of the invention

[0004] In order to solve the above technical problems, the present disclosure provides an air intake grille control method, device, medium and vehicle to flexibly control the air intake grille, which can meet the heat exchange requirements of both the engine side and the non-engine side.

[0005] The present disclosure provides an air intake grille control method, comprising:

[0006] Acquire a first required opening degree of the air intake grille from the engine side and a second required opening degree of the air intake grille from the non-engine side;

[0007] Based on the first demand opening and the second demand opening, determining a demand master having a larger demand opening, the demand master being the engine side or the non-engine side;

[0008] Based on the control strategy under the demand master, the opening of the air intake grille is controlled, and the control strategy is used to meet the heat exchange demand of the demand master by controlling the opening of the air intake grille.

[0009] In the present disclosure, the demand master is the engine side; based on the control strategy under the demand master, the opening of the air intake grille is controlled, including:

[0010] In response to the target control mode being enabled, taking the opening of the air intake grille at a previous moment as the initial value of the opening control, and adjusting the target parameter by controlling the opening of the air intake grille based on the difference between the target parameter and the corresponding expected temperature, so that the target parameter meets the error range of the corresponding expected temperature;

[0011] The target control mode is used to determine the target parameter and trigger the control of the opening of the air intake grille, and the target parameter is the engine water inlet temperature or the engine water outlet temperature.

[0012] In the present disclosure, the target control mode is an inlet temperature control mode, and the target parameter is an engine water inlet temperature; based on the difference between the target parameter and the corresponding expected temperature, the opening of the air intake grille is controlled to adjust the target parameter, including:

[0013] The opening of the air intake grille is controlled by a proportional-integral control method to be the sum of a first basic term, a first proportional term and a first integral term;

[0014] Among them, the first basic item is the demand opening corresponding to the ambient temperature and the expected water inlet temperature, the first proportional item is the product of the demand opening corresponding to the water inlet temperature difference and the water inlet temperature difference, the first integral item is the rate of change of the engine water inlet temperature and the demand opening corresponding to the water inlet temperature difference, and the water inlet temperature difference is the difference between the engine water inlet temperature and the expected water inlet temperature.

[0015] In the present disclosure, the target control mode is an outlet temperature control mode, and the target parameter is an engine water outlet temperature; based on the difference between the target parameter and the corresponding expected temperature, the opening of the air intake grille is controlled to adjust the target parameter, including:

[0016] The opening of the air intake grille is controlled by proportional-integral control to be the sum of a second basic term, a second proportional term and a second integral term;

[0017] Among them, the second basic item is the demand opening corresponding to the ambient temperature and the expected water outlet temperature, the second proportional item is the product of the demand opening corresponding to the water outlet temperature difference and the water outlet temperature difference, the second integral item is the rate of change of the engine water outlet temperature and the demand opening corresponding to the water outlet temperature difference, and the water outlet temperature difference is the difference between the engine water outlet temperature and the expected water outlet temperature.

[0018] In the present disclosure, the method further comprises:

[0019] In the process of controlling the opening of the air intake grille, if the initial value is smaller than the minimum opening of the air intake grille for providing air volume, and the opening of the air intake grille increases, the opening of the air intake grille is controlled starting from the minimum opening.

[0020] In the present disclosure, the method further comprises:

[0021] In the process of controlling the opening of the air intake grille, if the opening of the air intake grille reaches the minimum opening of the air intake grille for providing air volume and the opening of the air intake grille becomes smaller, the opening of the air intake grille is controlled to be 0.

[0022] In the present disclosure, the demand master is the non-engine side; based on the control strategy under the demand master, the opening of the air intake grille is controlled, including:

[0023] If the control valve of the coolant flow of the radiator is fully open and the air intake grille is not fully open, the opening of the air intake grille is controlled to be the second required opening plus the required opening corresponding to the engine water outlet temperature and the expected water outlet temperature;

[0024] Otherwise, the opening of the air intake grille is controlled to be the second required opening plus the required opening corresponding to the engine water inlet temperature and the expected water inlet temperature.

[0025] The present disclosure provides an air intake grille control device, comprising:

[0026] A required opening acquisition module, used to acquire a first required opening of the engine side to the air intake grille and a second required opening of the non-engine side to the air intake grille;

[0027] A master control party determination module, configured to determine a demand master control party having a larger demand opening based on the first demand opening and the second demand opening, wherein the demand master control party is the engine side or the non-engine side;

[0028] The air intake grille control module is used to control the opening of the air intake grille based on the control strategy under the demand master, and the control strategy is used to meet the heat exchange demand of the demand master by controlling the opening of the air intake grille.

[0029] The present disclosure also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a program or instruction, wherein the program or instruction enables a computer to execute the steps of any of the above methods.

[0030] The present disclosure also provides a vehicle, comprising:

[0031] one or more processors;

[0032] A memory for storing one or more programs or instructions;

[0033] The processor is used to execute the steps of any of the above methods by calling the program or instruction stored in the memory.

[0034] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0035] The technical solution provided by the embodiment of the present disclosure determines the demand master with a larger demand opening by comparing the first demand opening of the air intake grille on the engine side and the second demand opening of the air intake grille on the non-engine side, that is, determines whether the control demand for the air intake grille on the engine side or the non-engine side is dominant, and then adopts the control strategy under the demand master to control the opening of the air intake grille to meet the heat exchange demand of the demand master. Since the demand master with a larger demand opening can meet the heat exchange demand, the other one on the engine side and the non-engine side must meet the heat exchange demand. In this way, the technical solution of the present disclosure can flexibly control the opening of the air intake grille according to different demand masters, and can meet both the heat exchange demand of the engine side and the heat exchange demand of the non-engine side. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0038] Figure 1 A flow chart of an air intake grille control method provided by an embodiment of the present disclosure;

[0039] Figure 2 A structural block diagram of an air intake grille control device provided in an embodiment of the present disclosure;

[0040] Figure 3 A schematic diagram of the structure of a vehicle provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0041] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0043] Figure 1 This is a flow chart of an air intake grille control method provided by an embodiment of the present disclosure. This method is applicable to the case of controlling the water inlet temperature of an engine, and can be applied to electric vehicles and hybrid vehicles, etc. This method can be executed by an air intake grille control device of a vehicle thermal management system, and the air intake grille control device can be implemented in software and / or hardware. Figure 1 As shown, the method comprises the following steps:

[0044] S110, obtaining a first required opening of the air intake grille on the engine side and a second required opening of the air intake grille on the non-engine side.

[0045] In the disclosed embodiment, the engine side is specifically the engine, and the non-engine side is specifically the object other than the engine whose cooling and heating demand can be affected by the opening of the air intake grille, such as the compressor refrigerant and the low-temperature circuit. The first demand opening and the second demand opening are related to the target parameters (such as the engine water inlet temperature, the engine water outlet temperature and the refrigerant pressure, etc.), the speed of the water pump and the opening of the water valve, etc., and can be estimated by the vehicle thermal management system according to the management strategy to preliminarily obtain the first demand opening and the second demand opening, so as to be able to compare the size relationship between the first demand opening and the second demand opening.

[0046] S120 . Determine a demand master having a larger demand opening based on the first demand opening and the second demand opening.

[0047] The demand master is the engine side or the non-engine side, which is the side with the dominant control demand for the air intake grille between the engine side and the non-engine side. Exemplarily, when the first demand opening is greater than the second demand opening, the demand master is the engine side; when the first demand opening is less than the second demand opening, the demand master is the non-engine side.

[0048] S130: Control the opening of the air intake grille based on the control strategy of the demand master.

[0049] The control strategy is used to meet the heat exchange demand of the demand master by controlling the opening of the air intake grille. Different demand masters have different corresponding control strategies. Controlling the opening of the air intake grille based on the control strategy can enable the corresponding demand master to meet the heat exchange demand.

[0050] Accordingly, in some embodiments, the demand master is the engine side; based on the control strategy under the demand master, the opening of the air intake grille is controlled, including: in response to the target control mode being enabled, taking the opening of the air intake grille at the previous moment as the initial value of the opening control, and based on the difference between the target parameter and the corresponding expected temperature, controlling the opening of the air intake grille to adjust the target parameter so that the target parameter meets the error range of the corresponding expected temperature; wherein the target control mode is used to determine the target parameter and trigger the control of the opening of the air intake grille, and the target parameter is the engine water inlet temperature or the engine water outlet temperature.

[0051] Specifically, the target control mode is a closed-loop control mode. Compared with the open-loop control, the opening of the air intake grille can be accurately controlled by closed-loop control of the opening of the air intake grille, so that the target parameter is stable near the corresponding expected temperature, and the calibration work can be reduced, and the calibration cost can be reduced. The opening of the air intake grille at the previous moment can be the target opening calculated by other modes. For example, the target control mode may include an inlet temperature control mode and an outlet temperature control mode. The target opening of the air intake grille is calculated in the inlet temperature control mode, and then the target parameter is changed from the engine water inlet temperature to the engine water outlet temperature. At this time, the opening of the air intake grille should be calculated in the outlet temperature control mode, and the target opening of the air intake grille calculated in the inlet temperature control mode is used as the initial value of the closed-loop calculation of the air intake grille opening in the outlet temperature control mode. In this way, the continuity of the air intake grille opening can be maintained. If the target control mode is the inlet temperature control mode, the target parameter is the engine water inlet temperature, and the corresponding expected temperature is the expected water inlet temperature. If the target control mode is the outlet temperature control mode, the target parameter is the engine water outlet temperature, and the corresponding expected temperature is the expected water outlet temperature. Exemplarily, when the control valve of the coolant flow of the radiator is fully open and the air intake grille is not fully open, if the enhanced cooling engine demand is enabled and / or there is no open-loop control request for the air intake grille, and the demand master is the engine side, the outlet temperature control mode is enabled. When the control valve of the coolant flow of the radiator is not fully open and / or the air intake grille is fully open, if the enhanced cooling engine demand is enabled and / or there is no open-loop control request for the air intake grille, and the demand master is the engine side, the inlet temperature control mode is enabled. Among them, the enhanced cooling engine demand refers to the simultaneous closed-loop control of the speed of the cooling fan and the opening of the air intake grille. It should be noted that the opening of the closed-loop controlled air intake grille is limited by the maximum value (such as 270 degrees) and minimum value (0 degrees) of the air intake grille opening.

[0052] Based on the above embodiment, in one example, the target control mode is the inlet temperature control mode, and the target parameter is the engine water inlet temperature; based on the difference between the target parameter and the corresponding expected temperature, the opening of the air intake grille is controlled to adjust the target parameter, including: using proportional integral control to control the opening of the air intake grille to be the sum of the first basic item, the first proportional item and the first integral item; wherein the first basic item is the required opening corresponding to the ambient temperature and the expected water inlet temperature, the first proportional item is the product of the required opening corresponding to the water inlet temperature difference and the water inlet temperature difference, the first integral item is the rate of change of the engine water inlet temperature and the required opening corresponding to the water inlet temperature difference, and the water inlet temperature difference is the difference between the engine water inlet temperature and the expected water inlet temperature. By using the above proportional integral control to control the opening of the air intake grille, the opening of the air intake grille can be accurately controlled to the target opening, so that the engine water inlet temperature is stabilized within the error range of the expected water inlet temperature. The required opening corresponding to the ambient temperature and the expected water inlet temperature, the required opening corresponding to the water inlet temperature difference, and the rate of change of the engine water inlet temperature and the required opening corresponding to the water inlet temperature difference can all be pre-calibrated, and the calibration values ​​can be stored according to the mapping table.

[0053] In another example, the target control mode is the outlet temperature control mode, and the target parameter is the engine water outlet temperature; based on the difference between the target parameter and the corresponding expected temperature, the opening of the air intake grille is controlled to adjust the target parameter, including: using proportional integral control to control the opening of the air intake grille to the sum of the second basic term, the second proportional term and the second integral term; wherein the second basic term is the required opening corresponding to the ambient temperature and the expected water outlet temperature, the second proportional term is the product of the required opening corresponding to the outlet temperature difference and the outlet temperature difference, the second integral term is the rate of change of the engine water outlet temperature and the required opening corresponding to the outlet temperature difference, and the outlet temperature difference is the difference between the engine water outlet temperature and the expected water outlet temperature. Using the above-mentioned proportional integral control method to control the opening of the air intake grille can accurately control the opening of the air intake grille to the target opening, so that the engine water outlet temperature is stable within the error range of the expected water outlet temperature. The required opening corresponding to the ambient temperature and the expected outlet temperature, the required opening corresponding to the outlet temperature difference, and the rate of change of the engine outlet temperature and the required opening corresponding to the outlet temperature difference can all be pre-calibrated, and the calibration values ​​can be stored according to the mapping table.

[0054] In summary, the air intake grille control method provided by the embodiment of the present disclosure determines the demand master with a larger demand opening by comparing the first demand opening of the air intake grille on the engine side and the second demand opening of the air intake grille on the non-engine side, that is, determines whether the control demand for the air intake grille on the engine side or the non-engine side is dominant, and then adopts the control strategy under the demand master to control the opening of the air intake grille to meet the heat exchange demand of the demand master. Since the demand master with a larger demand opening can meet the heat exchange demand, the other one on the engine side and the non-engine side must meet the heat exchange demand. In this way, the technical solution of the present disclosure can flexibly control the opening of the air intake grille according to different demand masters, and can meet both the heat exchange demand of the engine side and the heat exchange demand of the non-engine side.

[0055] In some embodiments, the method further includes: in the process of controlling the opening of the air intake grille, if the initial value is less than the minimum opening of the air intake grille to provide air volume, and the opening of the air intake grille becomes larger, then the opening of the air intake grille is controlled from the minimum opening. Exemplarily, the minimum opening of the air intake grille to provide air volume is 16 degrees. When the opening of the air intake grille is less than 16 degrees, the air intake grille cannot provide air volume to perform heat exchange for the demanding main control party. If the initial value is less than 16 degrees, for example, 0 degrees, and in the process of closed-loop control of the opening of the air intake grille, the opening of the air intake grille changes from 0 degrees to 1 degree, indicating that the opening of the air intake grille becomes larger, then the opening of the air intake grille is directly closed-loop controlled from 16 degrees. In this way, ineffective control of the opening of the air intake grille is avoided, and the speed at which the opening of the air intake grille reaches the target opening is increased.

[0056] In some embodiments, the method further includes: in the process of controlling the opening of the air intake grille, if the opening of the air intake grille reaches the minimum opening of the air intake grille to provide air volume, and the opening of the air intake grille becomes smaller, then the opening of the air intake grille is controlled to be 0. Exemplarily, the minimum opening of the air intake grille to provide air volume is 16 degrees. When the opening of the air intake grille is less than 16 degrees, the air intake grille cannot provide air volume to perform heat exchange for the demanding main control party. If in the process of closed-loop control of the opening of the air intake grille, the opening of the air intake grille reaches 16 degrees and changes from 16 degrees to 15 degrees, indicating that the opening of the air intake grille becomes smaller and the air intake grille is not required to provide air volume, then the opening of the air intake grille is directly controlled to be 0. In this way, ineffective control of the opening of the air intake grille is avoided, and the speed at which the opening of the air intake grille reaches the target opening is increased.

[0057] In some embodiments, the demand master is the non-engine side; based on the control strategy under the demand master, the opening of the air intake grille is controlled, including: if the control valve of the coolant flow of the radiator is fully open and the air intake grille is not fully open, then the opening of the air intake grille is controlled to be the second demand opening plus the engine outlet temperature and the demand opening corresponding to the expected outlet temperature; otherwise, the opening of the air intake grille is controlled to be the second demand opening plus the engine inlet temperature and the demand opening corresponding to the expected inlet temperature. When the demand master is the non-engine side, if the opening of the air intake grille is closed-loop controlled only based on the difference between the engine inlet temperature or the engine outlet temperature and the corresponding expected temperature, the heat exchange demand of the non-engine side cannot be met. At this time, the closed-loop control has failed, and the opening of the air intake grille needs to be open-loop controlled to meet the heat exchange demand of the non-engine side. Afterwards, with the heat exchange on the non-engine side, if the demand master becomes the engine side, the opening of the air intake grille can be closed-loop controlled again, so as to achieve the switching of the control strategy of different demand masters.

[0058] Corresponding to the air intake grille control method provided by the embodiment of the present disclosure, the embodiment of the present disclosure also provides an air intake grille control device. Figure 2 The structural block diagram of the air intake grille control device provided in the embodiment of the present disclosure is as follows: Figure 2 As shown, the air intake grille control device includes:

[0059] A required opening acquisition module 21, used to acquire a first required opening of the engine side to the air intake grille and a second required opening of the non-engine side to the air intake grille;

[0060] A master control party determination module 22, for determining a demand master control party with a larger demand opening based on the first demand opening and the second demand opening, the demand master control party being the engine side or the non-engine side;

[0061] The air intake grille control module 23 is used to control the opening of the air intake grille based on the control strategy of the demand master, and the control strategy is used to meet the heat exchange demand of the demand master by controlling the opening of the air intake grille.

[0062] In some embodiments, the main controller is the engine side; the air intake grille control module 23 is used to:

[0063] In response to the target control mode being enabled, taking the opening of the air intake grille at a previous moment as the initial value of the opening control, and based on the difference between the target parameter and the corresponding expected temperature, controlling the opening of the air intake grille to adjust the target parameter so that the target parameter meets the error range of the corresponding expected temperature;

[0064] Among them, the target control mode is used to determine the target parameter and trigger the control of the air intake grille opening, and the target parameter is the engine water inlet temperature or the engine water outlet temperature.

[0065] In some embodiments, the target control mode is the inlet temperature control mode, and the target parameter is the engine water inlet temperature; the air intake grille control module 23 is specifically used for:

[0066] The opening of the air intake grille is controlled by proportional-integral control to be the sum of a first basic term, a first proportional term and a first integral term;

[0067] Among them, the first basic term is the demand opening corresponding to the ambient temperature and the expected water inlet temperature, the first proportional term is the product of the demand opening corresponding to the water inlet temperature difference and the water inlet temperature difference, the first integral term is the rate of change of the engine water inlet temperature and the demand opening corresponding to the water inlet temperature difference, and the water inlet temperature difference is the difference between the engine water inlet temperature and the expected water inlet temperature.

[0068] In some embodiments, the target control mode is the outlet temperature control mode, and the target parameter is the engine water outlet temperature; the air intake grille control module 23 is specifically used for:

[0069] The opening of the air intake grille is controlled by a proportional-integral control method to be the sum of a second basic term, a second proportional term and a second integral term;

[0070] Among them, the second basic term is the demand opening corresponding to the ambient temperature and the expected water outlet temperature, the second proportional term is the product of the demand opening corresponding to the water outlet temperature difference and the water outlet temperature difference, the second integral term is the rate of change of the engine water outlet temperature and the demand opening corresponding to the water outlet temperature difference, and the water outlet temperature difference is the difference between the engine water outlet temperature and the expected water outlet temperature.

[0071] In some embodiments, the air intake grille control module 23 is further configured to:

[0072] In the process of controlling the opening of the air intake grille, if the initial value is smaller than the minimum opening of the air intake grille for providing air volume, and the opening of the air intake grille increases, the opening of the air intake grille is controlled starting from the minimum opening.

[0073] In some embodiments, the air intake grille control module 23 is further configured to:

[0074] In the process of controlling the opening of the air intake grille, if the opening of the air intake grille reaches the minimum opening of the air intake grille to provide air volume and the opening of the air intake grille becomes smaller, the opening of the air intake grille is controlled to be 0.

[0075] In some embodiments, the demand master is a non-engine side; the air intake grille control module 23 is used to:

[0076] If the control valve of the coolant flow of the radiator is fully open and the air intake grille is not fully open, the opening of the air intake grille is controlled to be the second required opening plus the required opening corresponding to the engine water outlet temperature and the expected water outlet temperature;

[0077] Otherwise, the opening of the air intake grille is controlled to be the second required opening plus the required opening corresponding to the engine water inlet temperature and the expected water inlet temperature.

[0078] The air intake grille control device disclosed in the above embodiments can execute the air intake grille control method disclosed in the above embodiments, and has the same or corresponding beneficial effects. To avoid repetition, they will not be described again here.

[0079] The embodiment of the present disclosure also provides a computer-readable storage medium, which stores a program or instruction, and the program or instruction enables a computer to execute the steps of any of the above methods.

[0080] Exemplarily, the program or instruction enables a computer to execute an air intake grille control method, the method comprising:

[0081] Acquire a first required opening degree of the air intake grille from the engine side and a second required opening degree of the air intake grille from the non-engine side;

[0082] Based on the first demand opening and the second demand opening, determining a demand master having a larger demand opening, the demand master being an engine side or a non-engine side;

[0083] Based on the control strategy under the demand master, the opening of the air intake grille is controlled. The control strategy is used to meet the heat exchange demand of the demand master by controlling the opening of the air intake grille.

[0084] Optionally, when executed by a computer processor, the computer executable instructions can also be used to execute the technical solution of any of the above-mentioned air intake grille control methods provided in the embodiments of the present disclosure to achieve corresponding beneficial effects.

[0085] Through the above description of the implementation methods, the technicians in the relevant field can clearly understand that the embodiments of the present disclosure can be implemented with the help of software and necessary general hardware, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the embodiments of the present disclosure is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods described in each embodiment of the present disclosure.

[0086] The embodiment of the present disclosure also provides a vehicle, comprising: one or more processors; a memory for storing one or more programs or instructions; the processor calls the programs or instructions stored in the memory to execute the steps of any of the above methods to achieve corresponding beneficial effects.

[0087] Figure 3 Schematic diagram of the hardware structure of a vehicle provided in an embodiment of the present disclosure. Figure 3 As shown, the vehicle includes one or more processors 301 and memory 302 .

[0088] The processor 301 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the vehicle to perform desired functions.

[0089] The memory 302 may include one or more computer program products, and the computer program product may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache), etc. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 301 may run the program instructions to implement the above-described intake grille control method of the embodiment of the present disclosure, and / or other desired functions. Various contents such as input signals, signal components, noise components, etc. may also be stored in the computer-readable storage medium.

[0090] In one example, the vehicle may further include: an input device 303 and an output device 304 , and these components are interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0091] In addition, the input device 303 may also include, for example, a keyboard, a mouse, and the like.

[0092] The output device 304 can output various information to the outside, including the determined distance information, direction information, etc. The output device 304 can include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, and the like.

[0093] Of course, to simplify, Figure 3 Only some of the components in the vehicle related to the present disclosure are shown, and components such as buses, input / output interfaces, etc. are omitted. In addition, the vehicle may further include any other appropriate components according to specific application scenarios.

[0094] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0095] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for controlling an air intake grille, It is characterized in that include: Acquire a first required opening degree of the air intake grille from the engine side and a second required opening degree of the air intake grille from the non-engine side; Based on the first demand opening and the second demand opening, determining a demand master having a larger demand opening, the demand master being the engine side or the non-engine side; Based on the control strategy under the demand master, the opening of the air intake grille is controlled, and the control strategy is used to meet the heat exchange demand of the demand master by controlling the opening of the air intake grille.

2. The method according to claim 1, It is characterized in that The demand master is the engine side; based on the control strategy under the demand master, the opening of the air intake grille is controlled, including: In response to the target control mode being enabled, taking the opening of the air intake grille at a previous moment as the initial value of the opening control, and adjusting the target parameter by controlling the opening of the air intake grille based on the difference between the target parameter and the corresponding expected temperature, so that the target parameter meets the error range of the corresponding expected temperature; The target control mode is used to determine the target parameter and trigger the control of the opening of the air intake grille, and the target parameter is the engine water inlet temperature or the engine water outlet temperature.

3. The method according to claim 2, It is characterized in that The target control mode is an inlet temperature control mode, and the target parameter is the engine water inlet temperature; Based on the difference between the target parameter and the corresponding expected temperature, controlling the opening of the air intake grille to adjust the target parameter includes: The opening of the air intake grille is controlled by a proportional-integral control method to be the sum of a first basic term, a first proportional term and a first integral term; Among them, the first basic item is the demand opening corresponding to the ambient temperature and the expected water inlet temperature, the first proportional item is the product of the demand opening corresponding to the water inlet temperature difference and the water inlet temperature difference, the first integral item is the rate of change of the engine water inlet temperature and the demand opening corresponding to the water inlet temperature difference, and the water inlet temperature difference is the difference between the engine water inlet temperature and the expected water inlet temperature.

4. The method according to claim 2, It is characterized in that The target control mode is the outlet temperature control mode, and the target parameter is the engine water outlet temperature; Based on the difference between the target parameter and the corresponding expected temperature, controlling the opening of the air intake grille to adjust the target parameter includes: The opening of the air intake grille is controlled by proportional-integral control to be the sum of a second basic term, a second proportional term and a second integral term; Among them, the second basic item is the demand opening corresponding to the ambient temperature and the expected water outlet temperature, the second proportional item is the product of the demand opening corresponding to the water outlet temperature difference and the water outlet temperature difference, the second integral item is the rate of change of the engine water outlet temperature and the demand opening corresponding to the water outlet temperature difference, and the water outlet temperature difference is the difference between the engine water outlet temperature and the expected water outlet temperature.

5. The method according to claim 2, It is characterized in that The method further comprises: In the process of controlling the opening of the air intake grille, if the initial value is smaller than the minimum opening of the air intake grille for providing air volume, and the opening of the air intake grille increases, the opening of the air intake grille is controlled starting from the minimum opening.

6. The method according to claim 2, It is characterized in that The method further comprises: In the process of controlling the opening of the air intake grille, if the opening of the air intake grille reaches the minimum opening of the air intake grille for providing air volume and the opening of the air intake grille becomes smaller, the opening of the air intake grille is controlled to be 0.

7. The method according to claim 1, It is characterized in that The demand master is the non-engine side; based on the control strategy under the demand master, the opening of the air intake grille is controlled, including: If the control valve of the coolant flow of the radiator is fully open and the air intake grille is not fully open, the opening of the air intake grille is controlled to be the second required opening plus the required opening corresponding to the engine water outlet temperature and the expected water outlet temperature; Otherwise, the opening of the air intake grille is controlled to be the second required opening plus the required opening corresponding to the engine water inlet temperature and the expected water inlet temperature.

8. An air intake grille control device, It is characterized in that include: A required opening acquisition module, used to acquire a first required opening of the engine side to the air intake grille and a second required opening of the non-engine side to the air intake grille; A master control party determination module, configured to determine a demand master control party having a larger demand opening based on the first demand opening and the second demand opening, wherein the demand master control party is the engine side or the non-engine side; The air intake grille control module is used to control the opening of the air intake grille based on the control strategy under the demand master, and the control strategy is used to meet the heat exchange demand of the demand master by controlling the opening of the air intake grille.

9. A computer-readable storage medium, It is characterized in that The computer-readable storage medium stores a program or instruction, and the program or instruction enables a computer to execute the steps of the method according to any one of claims 1 to 7.

10. A vehicle, It is characterized in that include: one or more processors; A memory for storing one or more programs or instructions; The processor is used to execute the steps of the method according to any one of claims 1 to 7 by calling the program or instruction stored in the memory.

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