Active air-inlet grille control method and device, electronic equipment and storage medium

Abstract

The invention provides an active air-inlet grille control method and device, electronic equipment and a storage medium, and is suitable for the technical field of new energy automobiles. The method comprises the steps that driving information of a vehicle and information of a road to be driven in are determined; according to the driving information and the information of the road to be driven in, the opening degree of an active air inlet grille of the vehicle is controlled. According to the current driving information of the vehicle and the information of the road to be driven in, the opening degree of the active air inlet grille suitable for the current situation of the vehicle is obtained; when the active air-inlet grille is controlled, the specific condition of a driving road of the whole vehicle and the current driving condition of the vehicle can be fully considered, so that the vehicle can be driven by opening the optimal active air-inlet grille, and the endurance of the new energy vehicle is prolonged.

Description

Technical Field

[0001] The present application belongs to the technical field of new energy vehicles, and in particular, relates to an active air intake grille control method, device, electronic equipment and storage medium. Background Art

[0002] With the development of automobiles, the requirements for aerodynamics are getting higher and higher. Active Grille Shutter (AGS) not only helps with temperature control, but also reduces wind resistance. The existing active grille control method mainly uses one or more combination conditions of vehicle speed, ambient temperature, motor and electronic control component temperature and water temperature, or high pressure of the thermal management system as the basis for judgment to control the AGS opening angle. These methods are simple to control and easy to implement, but they do not fully consider the different effects of the specific road conditions of the vehicle (long uphill, long downhill, flat road conditions, etc.) on the vehicle resistance, that is, the further impact on AGS control, and do not consider the impact of the AGS opening angle on the energy consumption of other components of the vehicle. There is a lack of consideration of the overall energy benefit of the vehicle due to the AGS opening angle. Summary of the invention

[0003] The embodiments of the present application provide an active air intake grille control method, device, electronic device and storage medium, which can solve the current technical problem that the effect of turning on the active air intake grille function of a car in different driving scenarios is not ideal;

[0004] In a first aspect, an embodiment of the present application provides an active air intake grille control method, comprising:

[0005] Determine the driving information of the vehicle and the road information to be entered;

[0006] The opening of the active air intake grille of the vehicle is controlled according to the driving information and the information of the road to be entered.

[0007] In an embodiment of the present application, the opening of the active air intake grille suitable for the current situation of the vehicle can be obtained based on the current driving information of the vehicle and the information of the road to be entered. When controlling the active air intake grille, the specific conditions of the driving road of the whole vehicle and the current driving condition of the vehicle can be fully considered, so that the vehicle can open the optimal opening of the active air intake grille and increase the endurance of the new energy vehicle.

[0008] In some embodiments, the driving information includes a current pedal opening of the vehicle, and the information of the road to be entered includes a slope and a length of a ramp of the road to be entered by the vehicle.

[0009] In an embodiment of the present application, the slope and length of the ramp of the road to be entered by the vehicle can be analyzed to accurately determine the road condition type of the road to be entered by the vehicle. Then, during the driving process of the vehicle, the ECU can obtain the opening of the active air intake grille suitable for the current situation of the vehicle according to the specific road condition type of the vehicle and the current pedal opening.

[0010] In some embodiments, controlling the opening of the active air intake grille of the vehicle according to the driving information and the information of the road to be entered includes:

[0011] When the ramp slope is greater than a preset first slope, the ramp length is greater than a preset road length, and the current pedal opening is not greater than a preset pedal opening threshold, the active air intake grille is opened, and the opening of the active air intake grille is controlled according to the ramp slope and the ramp length.

[0012] When the ramp slope is greater than a preset first slope, the ramp length is greater than a preset road length, and the current pedal opening is greater than a preset pedal opening threshold, the active air intake grille is opened, and the opening of the active air intake grille is controlled according to the current pedal opening, the ramp slope, and the ramp length.

[0013] In an embodiment of the present application, when it is determined that the vehicle is about to enter a long uphill road, the active air intake grille is proactively opened, and the active air intake grille opening suitable for the current is controlled according to the future ramp slope and the future ramp length, thereby optimizing the current opening of the active air intake grille, preventing the motor electronic control temperature, ensuring the motor electronic control efficiency, and ensuring the endurance of the entire vehicle.

[0014] In some embodiments, controlling the opening of the active air intake grille of the vehicle according to the driving information and the information of the road to be entered includes:

[0015] When the slope of the ramp is less than the preset second slope and the length of the ramp is greater than the preset road length, the active air intake grille is opened, and the opening of the active air intake grille is controlled to reach a maximum opening value.

[0016] In the embodiment of the present application, when it is determined that the vehicle is about to enter a long downhill road, the opening of the vehicle's active air intake grille is opened to the maximum, which helps to achieve a certain energy-saving effect on the entire vehicle.

[0017] In some embodiments, the driving information includes the current speed of the vehicle;

[0018] The controlling the opening of the active air intake grille of the vehicle according to the driving information and the information of the road to be entered comprises:

[0019] When it is detected that the information of the road to be entered meets the flat road condition and the current first pressure of the thermal management system of the vehicle is not less than the pressure warning threshold, the active air intake grille is opened, and the opening of the active air intake grille is controlled according to the current vehicle speed and the current first pressure.

[0020] When it is detected that the information of the road to be entered meets the flat road condition, the current first pressure of the thermal management system of the vehicle is less than the pressure warning threshold, and the water temperature of the thermal management system of the vehicle is not less than the water temperature warning threshold, the active air intake grille is opened and the opening of the active air intake grille is controlled to reach the maximum opening value.

[0021] When it is detected that the information of the road to be entered meets the flat road condition, the current first pressure of the thermal management system of the vehicle is less than the pressure warning threshold, and the water temperature of the thermal management system of the vehicle is less than the water temperature warning threshold, the critical vehicle speed for controlling the active air intake grille is obtained according to a preset energy balance benefit relationship;

[0022] When the current vehicle speed is not greater than the critical vehicle speed, opening the active air intake grille, and controlling the opening of the active air intake grille to reach a maximum opening value;

[0023] When the current vehicle speed is greater than the critical vehicle speed, the active air intake grille is closed.

[0024] In the embodiment of the present application, when judging that the vehicle is about to enter a flat road, the thermal management controller will first judge whether the high pressure of the thermal management system and the water temperature of the motor and electronic control components are within the safety threshold range. If any one of them is not within the safety threshold range, the vehicle's active air intake grille opening will be controlled according to the corresponding control strategy. If all are within the safety threshold range, the next judgment logic is entered, that is, the opening of the active air intake grille is controlled according to the critical vehicle speed of the active air intake grille switch determined by the vehicle energy balance benefit method, so as to increase the overall energy benefit of the vehicle through intelligent control of the active air intake grille opening, which can further reduce energy consumption and increase the endurance of new energy vehicles.

[0025] In a second aspect, the present application further proposes an active air intake grille control device, comprising:

[0026] A determination unit, used to determine the driving information of the vehicle and the information of the road to be entered;

[0027] A control unit is used to control the opening of the active air intake grille of the vehicle according to the driving information and the information of the road to be entered.

[0028] In a third aspect, the present application further proposes an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method described in the first aspect when executing the computer program.

[0029] In a fourth aspect, the present application further proposes a storage medium, which is a computer-readable storage medium, and the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in the first aspect above is implemented.

[0030] It can be understood that the beneficial effects of the second to fourth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a flow chart of Embodiment 1 of the active air intake grille control method of the present application;

[0033] Figure 2 Schematic diagram of the flow chart of the second embodiment and the third embodiment of the active air intake grille control method of the present application;

[0034] Figure 3 A schematic diagram of an AGS opening table in Embodiment 2 of the present application;

[0035] Figure 4 A schematic diagram of another AGS opening table in the second embodiment of the present application;

[0036] Figure 5 Schematic diagram of another AGS opening table in the second embodiment of the present application;

[0037] Figure 6 This is a flow chart of the fourth embodiment of the active air intake grille control method of the present application;

[0038] Figure 7 A schematic diagram of an AGS opening table in Embodiment 4 of the present application;

[0039] Figure 8 It is a schematic diagram of another AGS opening table in the fourth embodiment of the present application;

[0040] Fig. 9It is a schematic diagram of another AGS opening table in the fourth embodiment of the present application;

[0041] Fig.10 This is a flow chart of Embodiment 5 of the active air intake grille control method of the present application;

[0042] Fig.11 A schematic diagram of an AGS opening table in Embodiment 5 of the present application;

[0043] Fig.12 It is a schematic diagram of another AGS opening table in the fifth embodiment of the present application;

[0044] Fig.13 A schematic diagram of the structure of an electronic device provided in this application;

[0045] Fig.14 It is a structural block diagram of the active air intake grille control device provided in this application. DETAILED DESCRIPTION

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0047] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0048] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0049] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two), unless otherwise clearly and specifically defined.

[0050] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0051] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0052] The inventor of the present application has noticed that the current active grille AGS control method mainly uses one or more combination of vehicle speed, ambient temperature, motor and electronic control component temperature and water temperature, or thermal management system high pressure as the basis for judgment to control the AGS opening angle. These methods are simple to control and easy to implement, but they do not fully consider the different effects of the specific road conditions of the vehicle (long uphill, long downhill, flat road surface, etc.) on the vehicle resistance, that is, the further impact on AGS control, and do not consider the impact of the AGS opening angle on the energy consumption of other components of the vehicle, and lack consideration of the overall energy benefit of the vehicle due to the AGS opening angle.

[0053] In order to solve the above technical problems, a technical solution of the active air intake grille control method of the present application is proposed; in order to illustrate the technical solution proposed in the embodiment of the present application, it is described below through a specific embodiment.

[0054] Embodiment 1

[0055] See also Figure 1 , Figure 1 The present invention provides a flow chart of a first embodiment of an active air intake grille control method. The active air intake grille control method in the embodiment of the present invention can be applied to an ECU (electronic control unit) at the vehicle end. The ECU may include a thermal management controller. The active air intake grille control method includes:

[0056] S10, determining the driving information of the vehicle and the information of the road to be entered;

[0057] Specifically, the execution subject of this embodiment is the electronic control unit of the vehicle;

[0058] The information of the road to be entered can be determined by using a vehicle-mounted GPS (Global Positioning System) to determine the current position of the vehicle, and then the information of the road to be entered by the vehicle can be obtained from a map application software (such as a vehicle-mounted navigation) based on the current position.

[0059] S20, controlling the opening of the active air intake grille of the vehicle according to the driving information and the information of the road to be entered.

[0060] Specifically, the present embodiment can pre-establish a correspondence between the opening of the active air intake grille AGS and the information of the road to be entered and / or the driving information, and the above correspondence can be saved in the AGS opening table. During the driving of the vehicle, the ECU can find the opening of the active air intake grille suitable for the current situation of the vehicle from the AGS opening table according to the driving information of the vehicle at this time and the information of the road to be entered, that is, fully consider the specific conditions of the driving road of the whole vehicle and the current driving condition of the vehicle, and open the optimal opening of the active air intake grille for driving.

[0061] In a preferred example, the information of the road to be entered includes the slope and length of the ramp of the road to be entered by the vehicle; it is understandable that, since new energy vehicles will travel on different road conditions, conventional road conditions include uphill conditions, downhill conditions, and flat road conditions, and the uphill conditions include long uphill conditions, or the downhill conditions include long downhill conditions, and the long uphill conditions will have a great impact on the resistance of the whole vehicle; therefore, the information of the road to be entered in this embodiment includes the slope and length of the ramp of the road to be entered, and the type of road condition of the road to be entered by the vehicle is accurately determined by analyzing the slope and length of the ramp of the road to be entered by the vehicle;

[0062] In a preferred example, the driving information includes the current pedal opening and / or the current vehicle speed of the vehicle. It is understandable that the pedal opening generated when the driver steps on the pedal while driving the vehicle will affect the vehicle motor power consumption and the air intake volume of the active air intake grille, and the vehicle will have different resistance conditions in different types of road conditions (uphill road type, downhill road type, flat road type); and as the vehicle speed changes, the wind resistance borne by the entire vehicle will also change accordingly;

[0063] It is understandable that new energy vehicles will travel on different road conditions, and the existing conventional AGS control method cannot optimize and adjust the AGS opening angle according to the specific conditions of the future driving road. For example, if the vehicle is about to travel on a long uphill road, if the AGS does not adjust the AGS opening according to the long uphill information, that is, the AGS opening cannot be controlled in advance according to future road information to prevent the motor electronic control temperature, it will easily cause the motor electronic control temperature to be too high, thereby affecting the motor electronic control efficiency and reducing the vehicle's endurance. For example, the vehicle is about to travel on a long downhill road, and air resistance also becomes a beneficial part at this time. In theory, turning on the AGS will have a certain effect on energy saving for the entire vehicle.

[0064] This embodiment can establish a mapping relationship between the AGS opening under different "ramp slope * ramp length" conditions and the current pedal opening and / or the current vehicle speed, and the above mapping relationship can be saved in the AGS opening table. During vehicle driving, the ECU can find the opening of the active air intake grille suitable for the current situation of the vehicle from the AGS opening table according to the vehicle's current "ramp slope * ramp length", the current pedal opening and / or the current vehicle speed, that is, fully consider the current situation of the whole vehicle to open the optimal active air intake grille opening for driving.

[0065] Embodiment 2

[0066] Furthermore, if Figure 2 As shown, based on the above-mentioned embodiment 1, embodiment 2 is proposed to expand the description of the active air intake grille control method of the present application.

[0067] In this embodiment, the temperature condition of the vehicle is described by taking the normal temperature condition (between 15° and 35°) as an example;

[0068] The S10 specifically includes: the thermal management controller receives the slope i, the slope length L, the current vehicle speed V and the current pedal opening;

[0069] Then, step S11 is executed to determine whether the future ramp gradient i is greater than the preset first gradient e1, and whether the ramp length L is greater than the preset road length f, so as to determine whether the road to be driven by the vehicle is a long uphill road. If it is a long uphill road, step S21 is executed; if it is not a long uphill road, step S12 is executed:

[0070] S21, when the ramp gradient i is greater than the preset first gradient e1 and the ramp length L is greater than the preset road length f, it means that the vehicle is about to enter a long uphill road, determining whether the current pedal opening is greater than the preset pedal opening threshold g, if so, executing step S22, if not, executing step S23;

[0071] S22, if the current pedal opening is not greater than the preset pedal opening threshold, the active air intake grille is opened, and the opening of the active air intake grille is controlled according to the slope of the ramp and the length of the ramp. Specifically, Figure 3 Table G shows the mapping relationship between the AGS opening and different "ramp slope * ramp length". The ECU can look up Table G through the future ramp slope i and the future ramp length L to obtain the corresponding AGS opening that needs to be opened. When the vehicle is about to enter a long uphill road, the active air intake grille is actively opened, and the active air intake grille opening suitable for the current is controlled according to the future ramp slope and the future ramp length, so as to optimize the current opening of the active air intake grille, prevent the motor electronic control temperature, ensure the motor electronic control efficiency, and ensure the endurance of the whole vehicle.

[0072] S23: If the current pedal opening is greater than the preset pedal opening threshold, the active air intake grille is opened, and the opening of the active air intake grille is controlled according to the current pedal opening, the ramp gradient and the ramp length. Figure 4 Table F shows the specific AGS opening values ​​under different "ramp slope * ramp length" and different pedal opening conditions. The ECU can obtain the corresponding AGS opening that needs to be opened by looking up Table G through the current pedal opening, future ramp slope i and future ramp length L;

[0073] It is understandable that since the uphill resistance is greater than the air resistance at this time, it is easy to cause the motor electronic control temperature to be high, affecting the working efficiency of the motor electronic control. This embodiment determines the AGS opening value through a table lookup based on the current pedal opening, future ramp slope and ramp length (i*L), ensuring that the motor electronic control is in a temperature range with better efficiency, preventing the risk of overheating or high temperature of the motor electronic control, and controlling the temperature can improve efficiency and thus improve endurance to a certain extent.

[0074] Step S12, judging whether the ramp gradient i is less than the preset second gradient e2 and the ramp length L is greater than the preset road length f, if yes, it means that the vehicle is about to enter a long downhill section and execute S24, if no, it means that the vehicle is about to enter a flat road and execute step S25:

[0075] S24, when the slope i is less than the preset second slope e2 and the slope length L is greater than the preset road length f, indicating that the vehicle is about to go downhill, the active air intake grille is opened, and the opening of the active air intake grille is controlled to reach the maximum opening value, that is, the AGS is fully opened, and the opening value reaches 100%. It can be understood that the air resistance of the downhill road also becomes a beneficial part. In theory, opening the AGS has a certain degree of effect on the energy saving of the whole vehicle, so at this time, the full opening of the AGS is also beneficial to thermal management.

[0076] Embodiment 3

[0077] Furthermore, based on the above-mentioned embodiment 2, embodiment 3 is proposed to further exemplify the active air intake grille control method of the present application.

[0078] Step S25 determines whether the current first pressure of the thermal management system of the vehicle is less than the pressure warning threshold h1 when it is detected that the information of the road to be entered meets the flat road condition. If not, execute S26. If yes, execute S27:

[0079] S26 opens the active air intake grille and controls the opening degree of the active air intake grille according to the current vehicle speed and the current first pressure. Figure 5 Table H shows the specific AGS opening values ​​under different vehicle speeds and different first pressures. The ECU can look up Table H through the current vehicle speed and the current first pressure to obtain the corresponding AGS opening that needs to be opened.

[0080] It should be noted that Table H, Table F, and Table G in this embodiment are all obtained through experimental data. The first pressure is the pressure at the compressor outlet of the thermal management system (which can be called high pressure);

[0081] Step S27: If the current first pressure is less than the pressure warning threshold h1, determine whether the water temperature of the thermal management system of the vehicle is less than the water temperature warning threshold h2. If not, execute S28; if yes, execute S29:

[0082] S28 opens the active air intake grille and controls the opening of the active air intake grille to reach a maximum opening value.

[0083] Step S29: obtaining a critical vehicle speed Vcritical for controlling the active air intake grille according to a preset energy balance benefit relationship;

[0084] It is understandable that the preset energy balance benefit relationship can be characterized by the following content:

[0085] 1. All other conditions remain the same. Test different vehicle speeds. When AGS is turned off, the vehicle energy consumption is Qclose; when AGS is fully turned on, the vehicle energy consumption is Qopen. Under different vehicle speeds, the vehicle energy consumption reduction value is Qdec = Qopen-Qclose. Different Qdec curves can be obtained based on different external temperature conditions.

[0086] 2. Qdec is a curve that changes with vehicle speed. It may be negative or positive. If it is positive, turning off AGS will have a positive benefit. If it is negative, it means turning off AGS will have a negative benefit, that is, turning off AGS will not contribute to the energy consumption of the whole vehicle, but will increase the energy consumption of the whole vehicle.

[0087] 3. Note: When the vehicle is driving on a flat road, as the speed increases, the air resistance is reduced more when the AGS is turned off, and the energy consumption of the whole vehicle is reduced more. However, when the AGS is turned off, the water pump power of the motor electronic control water circuit will increase compared to when the AGS is turned on. Since the air intake grille AGS is turned off, the high pressure pressure will increase, the compressor power consumption of the thermal management system will also increase, and the cooling fan power will also increase. The increase in high-pressure power consumption and low-pressure power consumption of the thermal management may exceed the reduction in the energy consumption of the whole vehicle, so there is an energy balance benefit point.

[0088] S30 determines whether the current vehicle speed is greater than the critical vehicle speed, if not, executes S31, if yes, executes S32:

[0089] S31 opens the active air intake grille and controls the opening of the active air intake grille to reach a maximum opening value, that is, the AGS is fully opened and the opening value reaches 100%.

[0090] S32 closes the active air intake grille, and the opening value is 0%.

[0091] When judging that the vehicle is about to enter a flat road, the thermal management controller will first judge whether the high pressure of the thermal management system and the water temperature of the motor and electronic control components are within the safety threshold range. If any one of them is not within the safety threshold range, the vehicle's active air intake grille opening will be controlled according to the corresponding control strategy. If all are within the safety threshold range, the next judgment logic is entered, that is, the opening of the active air intake grille is controlled according to the critical vehicle speed of the active air intake grille switch determined by the vehicle energy balance benefit method, so as to increase the overall energy benefit of the vehicle through intelligent control of the active air intake grille opening, further reduce energy consumption, and increase the endurance of new energy vehicles.

[0092] Embodiment 4

[0093] Furthermore, if Figure 6 As shown, based on the above-mentioned embodiment 1, embodiment 4 is proposed to expand the implementation method of the active air intake grille control method of the present application under high temperature conditions.

[0094] In this embodiment, the temperature condition of the vehicle is described by taking a high temperature condition (above 35°) as an example;

[0095] The S10 specifically includes: the thermal management controller receives the slope i, the slope length L, the current vehicle speed V and the current pedal opening;

[0096] Then, step S011 is executed to determine whether the future ramp gradient i is greater than the preset first gradient a, and whether the ramp length L is greater than the preset road length b, so as to determine whether the road to be driven by the vehicle is a long uphill road. If it is a long uphill road, step S021 is executed; if it is not a long uphill road, step S012 is executed:

[0097] S021, when the ramp gradient i is greater than the preset first gradient a and the ramp length L is greater than the preset road length b, it indicates that the vehicle is about to enter a long uphill road, determining whether the current pedal opening is greater than a preset pedal opening threshold c, if so, executing step S022, if not, executing step S023;

[0098] It should be noted that, since the fourth embodiment is under high temperature conditions, the preset first slope, preset second slope, preset road length, and preset pedal opening threshold used in the fourth embodiment will be different from the preset first slope, preset road length, and preset pedal opening threshold used in the second embodiment, and the specific values ​​can be determined through experimental data.

[0099] S022: If the current pedal opening is not greater than the preset pedal opening threshold, the active air intake grille is opened, and the opening of the active air intake grille is controlled according to the slope of the ramp and the length of the ramp. Figure 7 Table B shows the mapping relationship between the AGS opening and different "ramp slope * ramp length". The ECU can look up Table B through the future ramp slope i and the future ramp length L to obtain the corresponding AGS opening that needs to be opened. When the vehicle is about to enter a long uphill road, the active air intake grille is actively opened, and the active air intake grille opening suitable for the current is controlled according to the future ramp slope and the future ramp length, so as to optimize the current opening of the active air intake grille, prevent the motor electronic control temperature, ensure the motor electronic control efficiency, and ensure the endurance of the whole vehicle.

[0100] S023: If the current pedal opening is greater than the preset pedal opening threshold, the active air intake grille is opened, and the opening of the active air intake grille is controlled according to the current pedal opening, the ramp gradient and the ramp length. Figure 8 Table A shows the specific AGS opening values ​​under different "ramp slope * ramp length" and different pedal opening conditions. The ECU can obtain the corresponding AGS opening that needs to be opened by looking up Table A through the current pedal opening, future ramp slope i and future ramp length L.

[0101] It is understandable that since the uphill resistance is greater than the air resistance at this time, it is easy to cause the motor electronic control temperature to be high, affecting the working efficiency of the motor electronic control. This embodiment determines the AGS opening value through a table lookup based on the current pedal opening, future ramp slope and ramp length (i*L), ensuring that the motor electronic control is in a temperature range with better efficiency, preventing the risk of overheating or high temperature of the motor electronic control, and controlling the temperature can improve efficiency and thus improve endurance to a certain extent.

[0102] Step S012, judging whether the ramp gradient i is less than the preset second gradient d and the ramp length L is greater than the preset road length b, if yes, it means that the vehicle is about to enter a long downhill section and executes S024, if no, it means that the vehicle is about to enter a flat road and executes step S025:

[0103] S024, when the slope i is less than the preset second slope d and the slope length L is greater than the preset road length f, indicating that the vehicle is about to go downhill, the active air intake grille is opened, and the opening of the active air intake grille is controlled to reach the maximum opening value, that is, the AGS is fully opened, and the opening value reaches 100%. It can be understood that the air resistance of the downhill road also becomes a beneficial part. In theory, opening the AGS has a certain degree of effect on the energy saving of the whole vehicle, so at this time, fully opening the AGS is also beneficial to thermal management.

[0104] S025, obtaining a current water temperature of a thermal management system of the vehicle, and controlling the opening of an active air intake grille of the vehicle according to the current water temperature and the current vehicle speed;

[0105] Specifically, Fig. 9 Table C shows the specific AGS opening values ​​at different water temperatures and vehicle speeds. The ECU can obtain the corresponding AGS opening by looking up Table C at the current water temperature and current vehicle speed. When the vehicle is about to enter a flat road, the active air intake grille is opened actively, and the active air intake grille opening suitable for the current time is obtained according to the current water temperature and current vehicle speed, thereby optimizing the current opening of the active air intake grille to ensure the vehicle's endurance.

[0106] Embodiment 5

[0107] Furthermore, if Fig.10 As shown, based on the above-mentioned embodiment 1, embodiment 5 is proposed to illustrate other implementation methods of the active air intake grille control method of the present application under low temperature conditions (below 15°).

[0108] In this embodiment, the active air intake grille control method further includes:

[0109] S80, the thermal management controller determines whether the drive motor is in the cooling demand mode, if so, executes S81, if not, executes S82:

[0110] S81, opening the active air intake grille AGS, and controlling the opening value of the active air intake grille according to the current water temperature and the current vehicle speed; Fig.11 Table D shows the specific AGS opening values ​​at different water temperatures and vehicle speeds. The ECU can obtain the corresponding AGS opening that needs to be opened by looking up Table D at the current water temperature and current vehicle speed. When the drive motor is in the cooling demand mode, the active air intake grille is actively opened, and the active air intake grille opening suitable for the current time is obtained according to the current water temperature and current vehicle speed, thereby optimizing the current opening of the active air intake grille to ensure the vehicle's endurance.

[0111] S82, the thermal management controller determines whether the drive motor is in the pure waste heat recovery mode, if so, executes S83, if not, executes S84:

[0112] S83, closing the active air intake grille, with the opening value being 0%.

[0113] S84: The thermal management controller determines whether the drive motor is in the LTR (air) + waste heat recovery mode. If so, S85 is executed. If not, S86 is executed to close the active air intake grille.

[0114] S85, indicating that the drive motor is in the heat storage mode, the active air intake grille AGS is turned on, and the opening value of the active air intake grille is controlled according to the current second pressure and the current vehicle speed, wherein the second pressure is the pressure of the compressor intake port of the thermal management system (which may be referred to as the low pressure); Fig.12 Table E shows the specific AGS opening values ​​under different second pressures (low pressure) and vehicle speeds. The ECU can obtain the corresponding AGS opening that needs to be opened by looking up Table E through the current second pressure and current vehicle speed. When the drive motor is in cooling demand mode, the active air intake grille is actively opened, and the active air intake grille opening suitable for the current time is obtained according to the current water temperature and current vehicle speed, thereby optimizing the current opening of the active air intake grille to ensure the vehicle's endurance.

[0115] The technical solution of the embodiment of the fifth embodiment is combined with the above-mentioned embodiments of the first and second embodiments to cover any ambient temperature conditions and driving road scenarios of the vehicle, and can adapt to different ambient temperatures and different driving road conditions to further optimize the energy consumption of the vehicle and improve endurance.

[0116] Embodiment 6

[0117] See also Fig.13 , Fig.13 The present application provides an embodiment of an electronic device for active air intake grille control. The electronic device may include the thermal management controller mentioned in the above embodiments of the active air intake grille control method. Fig.13 As shown, the electronic device of this embodiment includes: at least one processor 10 ( Fig.13 Only one is shown), a memory 11, and a computer program 12 stored in the memory 11 and executable on the at least one processor 10, wherein the processor 10 implements the steps in the method embodiment of active grille control of the present application when executing the computer program 12.

[0118] Fig.13 The electronic device shown may include, but is not limited to, a processor 10 and a memory 11. Those skilled in the art will appreciate that Fig.13 These are merely examples of electronic devices and do not constitute a limitation on the electronic devices. The electronic devices may include more or fewer components than those shown in the figure, or a combination of certain components, or different components. For example, the electronic devices may also include input and output devices, network access devices, etc.

[0119] The processor 10 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0120] In some embodiments, the memory 11 may be an internal storage unit of the computer device 1, such as a hard disk or memory of the computer device 1. In other embodiments, the memory 11 may also be an external storage device of the computer device 1, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the computer device 1. Further, the memory 11 may also include both an internal storage unit and an external storage device of the computer device 1. The memory 11 is used to store an operating system, an application program, a boot loader (BootLoader), data, and other programs, such as the program code of the computer program. The memory 11 may also be used to temporarily store data that has been output or is to be output.

[0121] Further, in one embodiment, if Fig.14As shown, the present invention also provides an active air intake grille control device, comprising:

[0122] A determination unit 10, used to determine the driving information of the vehicle and the information of the road to be entered;

[0123] The control unit 20 is used to control the opening of the active air intake grille of the vehicle according to the driving information and the information of the road to be entered.

[0124] It should be noted that the active air intake grille control device can be the thermal management controller mentioned in the above active air intake grille control method embodiments, which can be understood as a virtual device that can be loaded in the electronic device of the above embodiments. The electronic device calls the active air intake grille control device through the processor, and then runs the specific implementation plan in the above active air intake grille control method embodiments. The information interaction, execution process, etc. between the above devices / units are based on the same concept as the method embodiments of this application. Their specific functions and technical effects can be specifically referred to the method embodiment part.

[0125] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0126] An embodiment of the present application further provides a storage medium, which is a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0127] 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 present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may at least include: any entity or device capable of carrying the computer program code to an electronic device, a recording medium, a computer memory, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), an electric carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0128] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0129] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An active air intake grille control method, characterized in that: The method comprises: Determine the driving information of the vehicle and the road information to be entered; The opening of the active air intake grille of the vehicle is controlled according to the driving information and the information of the road to be entered.

2. The method according to claim 1, characterized in that The driving information includes a current pedal opening of the vehicle, and the information of the road to be entered includes a slope and a length of a ramp of the road to be entered by the vehicle.

3. The method according to claim 2, characterized in that The controlling the opening of the active air intake grille of the vehicle according to the driving information and the information of the road to be entered comprises: When the ramp slope is greater than a preset first slope, the ramp length is greater than a preset road length, and the current pedal opening is not greater than a preset pedal opening threshold, the active air intake grille is opened, and the opening of the active air intake grille is controlled according to the ramp slope and the ramp length.

4. The method according to claim 2, characterized in that The controlling the opening of the active air intake grille of the vehicle according to the driving information and the information of the road to be entered comprises: When the ramp slope is greater than a preset first slope, the ramp length is greater than a preset road length, and the current pedal opening is greater than a preset pedal opening threshold, the active air intake grille is opened, and the opening of the active air intake grille is controlled according to the current pedal opening, the ramp slope, and the ramp length.

5. The method according to claim 2, characterized in that The controlling the opening of the active air intake grille of the vehicle according to the driving information and the information of the road to be entered comprises: When the slope of the ramp is less than the preset second slope and the length of the ramp is greater than the preset road length, the active air intake grille is opened, and the opening of the active air intake grille is controlled to reach a maximum opening value.

6. The method according to claim 1, characterized in that The driving information includes the current speed of the vehicle; The controlling the opening of the active air intake grille of the vehicle according to the driving information and the information of the road to be entered comprises: When it is detected that the information of the road to be entered meets the flat road condition and the current first pressure of the thermal management system of the vehicle is not less than the pressure warning threshold, the active air intake grille is opened, and the opening of the active air intake grille is controlled according to the current vehicle speed and the current first pressure.

7. The method according to claim 6, characterized in that The controlling the opening of the active air intake grille of the vehicle according to the driving information and the information of the road to be entered comprises: When it is detected that the information of the road to be entered meets the flat road condition, the current first pressure of the thermal management system of the vehicle is less than the pressure warning threshold, and the water temperature of the thermal management system of the vehicle is not less than the water temperature warning threshold, the active air intake grille is opened and the opening of the active air intake grille is controlled to reach the maximum opening value.

8. The method according to claim 7, characterized in that The controlling the opening of the active air intake grille of the vehicle according to the driving information and the information of the road to be entered comprises: When it is detected that the information of the road to be entered meets the flat road condition, the current first pressure of the thermal management system of the vehicle is less than the pressure warning threshold, and the water temperature of the thermal management system of the vehicle is less than the water temperature warning threshold, the critical vehicle speed for controlling the active air intake grille is obtained according to a preset energy balance benefit relationship; When the current vehicle speed is not greater than the critical vehicle speed, opening the active air intake grille, and controlling the opening of the active air intake grille to reach a maximum opening value; When the current vehicle speed is greater than the critical vehicle speed, the active air intake grille is closed.

9. An active air intake grille control device, characterized in that: include: A determination unit, used to determine the driving information of the vehicle and the information of the road to be entered; A control unit is used to control the opening of the active air intake grille of the vehicle according to the driving information and the information of the road to be entered.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 8 is implemented.

11. A storage medium, wherein the storage medium is a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, wherein: When the computer program is executed by a processor, the method according to any one of claims 1 to 8 is implemented.

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