A method, device, medium, and equipment for controlling the active grille shutter of an electric vehicle.

Abstract

This invention belongs to the field of active air intake grille technology, and provides a method, device, medium, and equipment for controlling an active air intake grille in an electric vehicle. The method includes: if the air conditioning is in operating mode, for the water system, calculating a first vehicle-wide required air intake volume using the radiator outlet temperature and a first target inlet water temperature as parameters; for the refrigerant, calculating a second vehicle-wide required air intake volume using the refrigerant-side high-pressure pressure as a parameter; taking the maximum value of the first and second vehicle-wide required air intake volumes as the total vehicle-wide required air intake volume; if the air conditioning is in non-operating mode, calculating the total vehicle-wide required air intake volume using the radiator outlet temperature and the second target inlet water temperature as parameters; using the total vehicle-wide required air intake volume as a constraint, optimizing the active air intake grille opening and fan duty cycle by minimizing the energy consumption of thermal management accessories and the overall vehicle energy consumption, to obtain the optimal active air intake grille opening. This optimizes the overall vehicle energy consumption.

Description

Technical Field

[0001] This invention belongs to the field of active grille shutter technology, and particularly relates to an active grille shutter control method, device, medium and equipment for electric vehicles. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] With the widespread adoption of electric vehicles, range anxiety under high and low temperatures is one of the core pain points for customers, making the reduction of thermal management energy consumption a top priority. The initial purpose of applying an active grille shutter (AGS) is to reduce the overall vehicle drag, thereby reducing overall vehicle energy consumption. However, due to the thermal management requirements of electric vehicles, the AGS needs to be opened to a certain degree. In addition to affecting drag, the opening degree of the AGS also affects the power consumption of thermal management accessories, mainly reflected in the reduction of fan and compressor power consumption.

[0004] The application of Active Grille System (AGS) in the electric vehicle field is becoming increasingly widespread. However, the control methods for AGS vary, with most relying on relatively simple parameters such as vehicle speed and ambient temperature. If AGS control is based on a single parameter, such as ambient temperature, coolant temperature, or vehicle speed, it cannot adapt to different usage scenarios of the vehicle. This inevitably leads to an unreasonable AGS control strategy, resulting in higher overall vehicle energy consumption and a significant reduction in driving range.

[0005] In addition, AGS opening control prioritizes thermal management needs, but the above control methods cannot balance the energy consumption of thermal management accessories and the energy consumption of vehicle attributes (wind resistance). The vehicle's energy consumption is passively accepted and cannot guarantee the optimization of the vehicle's energy consumption. Summary of the Invention

[0006] To address the technical problems mentioned above, this invention provides an active air intake grille control method, device, medium, and equipment for electric vehicles. Based on the air conditioning operating mode, different parameters are selected to calculate the vehicle's required air volume. Using the required air volume as a constraint, the AGS opening is optimized based on the energy consumption of thermal management accessories and the energy consumption of the vehicle's attributes, thereby achieving the optimal state of the vehicle's energy consumption.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] The first aspect of the present invention provides an active grille control method for electric vehicles.

[0009] An active grille shutter control method for electric vehicles includes:

[0010] Obtain the air conditioner's operating mode;

[0011] If the air conditioning is in working mode, for the water circuit, the first vehicle required air intake volume is calculated using the radiator outlet water temperature and the first target inlet water temperature as parameters; for the refrigerant, the second vehicle required air intake volume is calculated using the refrigerant side high pressure as a parameter; the maximum value of the first vehicle required air intake volume and the second vehicle required air intake volume is taken as the vehicle required air intake volume.

[0012] If the air conditioning is in non-operating mode, the required air intake volume of the whole vehicle is calculated using the radiator outlet water temperature and the second target inlet water temperature as parameters.

[0013] With the required air intake volume of the whole vehicle as a constraint, the active air intake grille opening and fan duty cycle are optimized by minimizing the energy consumption of thermal management accessories and the energy consumption of the whole vehicle attributes, so as to obtain the optimal active air intake grille opening.

[0014] Furthermore, if the air conditioning is in working mode, the calculation parameters for the first and second vehicle air intake requirements also include ambient temperature and vehicle speed.

[0015] Furthermore, if the air conditioning is in a non-operating state, the calculation parameters for the vehicle's required air intake volume also include ambient temperature and vehicle speed.

[0016] Furthermore, the optimization of the active air intake grille opening and fan duty cycle is achieved through experimental design analysis. In the experimental design analysis process, the vehicle's required air intake volume is used as a constraint, and the active air intake grille opening and fan duty cycle are used as input variables. Through simulation analysis, the energy consumption of thermal management accessories and the energy consumption of the vehicle attributes are obtained.

[0017] A second aspect of the present invention provides an active grille control device for electric vehicles.

[0018] An active grille shutter control device for electric vehicles, comprising:

[0019] The data acquisition module is configured to acquire the air conditioner's operating mode.

[0020] The first demand air intake calculation module is configured as follows: if the air conditioning is in working mode, for the water circuit, the first demand air intake of the whole vehicle is calculated using the radiator outlet water temperature and the first target inlet water temperature as parameters; for the refrigerant, the second demand air intake of the whole vehicle is calculated using the refrigerant side high pressure as a parameter; the maximum value of the first demand air intake of the whole vehicle and the second demand air intake of the whole vehicle is taken as the demand air intake of the whole vehicle.

[0021] The second calculation module for the required air intake volume is configured to: if the air conditioning is in a non-working state, calculate the required air intake volume of the whole vehicle using the radiator outlet water temperature and the second target inlet water temperature as parameters.

[0022] The optimization module is configured to optimize the active air intake grille opening and fan duty cycle by minimizing the energy consumption of thermal management accessories and the energy consumption of the vehicle attributes, with the vehicle's required air intake volume as a constraint, to obtain the optimal active air intake grille opening.

[0023] Furthermore, if the air conditioning is in working mode, the calculation parameters for the first and second vehicle air intake requirements also include ambient temperature and vehicle speed.

[0024] Furthermore, if the air conditioning is in a non-operating state, the calculation parameters for the vehicle's required air intake volume also include ambient temperature and vehicle speed.

[0025] Furthermore, the optimization of the active air intake grille opening and fan duty cycle is achieved through experimental design analysis. In the experimental design analysis process, the vehicle's required air intake volume is used as a constraint, and the active air intake grille opening and fan duty cycle are used as input variables. Through simulation analysis, the energy consumption of thermal management accessories and the energy consumption of the vehicle attributes are obtained.

[0026] A third aspect of the present invention provides a computer-readable storage medium.

[0027] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of an active grille control method for an electric vehicle as described in the first aspect above.

[0028] A fourth aspect of the present invention provides a computer device.

[0029] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of an active grille control method for an electric vehicle as described in the first aspect above.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] This invention selects different parameters based on the air conditioning operating mode to calculate the required air volume for the whole vehicle. Using the required air volume as a constraint, it achieves optimal control of the AGS opening based on the energy consumption of thermal management accessories and the energy consumption of the whole vehicle attributes. It can dynamically and in real time balance the energy consumption loss of thermal management and the energy consumption loss of the whole vehicle attributes, so that the energy consumption of the whole vehicle reaches the optimal state.

[0032] The energy consumption optimization work of this invention utilizes three-dimensional and one-dimensional simulation analysis, which reduces the development cycle and simplifies the control logic. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a flowchart illustrating an active grille control method for an electric vehicle according to Embodiment 1 of the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of a computer device shown in Embodiment 4 of the present invention. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0038] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0039] It should be noted that the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods and apparatuses according to various embodiments of the present invention. It should be noted that each block in a flowchart or block diagram may represent a module, segment, or portion of code, which may include one or more executable instructions for implementing the logical functions specified in the various embodiments. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutively represented blocks may actually be executed substantially in parallel, or they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the flowcharts and / or block diagrams, and combinations of blocks in the flowcharts and / or block diagrams, may be implemented using dedicated hardware-based apparatus that performs the specified functions or operations, or may be implemented using a combination of dedicated hardware and computer instructions.

[0040] Example 1

[0041] This embodiment provides a method for controlling the active grille shutter of an electric vehicle.

[0042] This embodiment provides an active grille control method for electric vehicles, applicable to pure electric vehicles or hybrid vehicles.

[0043] Due to the diversity of ambient temperatures in vehicles used by users, control strategies need to consider more usage scenarios, control parameters need to consider system-level interactions, AGS real-time dynamic control, balance thermal management energy consumption loss and vehicle attribute energy consumption loss, so that the overall vehicle energy consumption reaches the optimal state.

[0044] This embodiment provides an active grille shutter control method for electric vehicles. Based on multiple parameters such as air conditioning operating mode, ambient temperature, vehicle speed, compressor high-pressure side pressure, battery inlet water temperature, motor inlet water temperature, air conditioning side inlet water temperature, and cooling fan opening, AGS control is performed to dynamically and in real time balance thermal management energy consumption loss and vehicle attribute energy consumption loss, so that the vehicle energy consumption reaches the optimal state.

[0045] This embodiment provides an active grille shutter control method for electric vehicles, which is mainly formulated from the perspective of optimizing the energy consumption of the whole vehicle. It can realize the optimal control of AGS opening based on the energy consumption of thermal management accessories and the energy consumption of the whole vehicle attributes according to different usage scenarios of the whole vehicle. Moreover, the energy consumption optimization work can be carried out with the help of three-dimensional and one-dimensional simulation analysis, which reduces the development cycle and simplifies the control logic.

[0046] This embodiment provides a method for controlling an active grille shutter on an electric vehicle, such as... Figure 1 As shown, it includes the following steps:

[0047] Step 1: The VCU divides the control logic into two states based on the air conditioner's operating mode (whether the air conditioner is working): air conditioner working state and non-working state.

[0048] In this embodiment, different air conditioning modes will cause differences in the target inlet water temperature.

[0049] Step 2: The vehicle's required air volume is calculated using the radiator outlet water temperature, target inlet water temperature 1, ambient temperature, and vehicle speed as parameters. The three-dimensional map table of the vehicle's required air volume 1 is obtained through the thermal management model. The three-dimensional map table of the vehicle's required air volume 2 is obtained using the refrigerant side high pressure, ambient temperature, and vehicle speed as parameters.

[0050] Step 3: If the air conditioning is in working mode, calculate the vehicle's required air intake volume for both the water circuit and the refrigerant, and take the maximum of the two as the vehicle's required air intake volume. Specifically:

[0051] Step 301: For the water system, obtain the radiator outlet water temperature, the first target inlet water temperature (target inlet water temperature 1), ambient temperature and vehicle speed as parameters, and obtain the first vehicle demand air volume by looking up the three-dimensional Map table of the first vehicle demand air volume (vehicle demand air volume 1).

[0052] The first target inlet water temperature is the minimum value among the refrigerant side temperature, electric drive temperature, and battery temperature.

[0053] Step 302: For refrigerant, using refrigerant side high pressure, ambient temperature and vehicle speed as parameters, the second vehicle demand air intake volume is obtained by looking up the three-dimensional Map table of the second vehicle demand air intake volume (vehicle demand air intake volume 2).

[0054] Step 303: Take the maximum value (Max) of the first vehicle's required air intake volume and the second vehicle's required air intake volume as the final vehicle's required air intake volume.

[0055] Step 4: Using radiator outlet water temperature, second target inlet water temperature (target inlet water temperature 2), ambient temperature and vehicle speed as parameters, calculate the vehicle's required air intake volume 3 three-dimensional map table through the thermal management model.

[0056] The second target inlet water temperature is the minimum of the electric drive temperature and the battery temperature.

[0057] Step 5: If the air conditioning is in the non-operating state, the radiator outlet water temperature, the second target inlet water temperature (target inlet water temperature 2), the ambient temperature and the vehicle speed are used as parameters. The vehicle demand air volume 3 is obtained by looking up the table through the three-dimensional map table of the third vehicle demand air volume (vehicle demand air volume 3). The third vehicle demand air volume is used as the final vehicle demand air volume.

[0058] In this embodiment, the three-dimensional map table for vehicle air intake volume requirement 1 records the relationship between radiator outlet water temperature, target inlet water temperature 1, ambient temperature, vehicle speed, and vehicle air intake volume requirement; the three-dimensional map table for vehicle air intake volume requirement 2 records the relationship between refrigerant-side high pressure, ambient temperature, vehicle speed, and vehicle air intake volume requirement; the three-dimensional map table for vehicle air intake volume requirement 3 records the relationship between radiator outlet water temperature, second target inlet water temperature, ambient temperature, vehicle speed, and vehicle air intake volume requirement. Taking the three-dimensional map table for vehicle air intake volume requirement 2 as an example, under a certain refrigerant-side high pressure, it can be simplified to Table 1.

[0059] Table 1. Vehicle Air Intake Requirement under High Pressure on a Certain Refrigerant Side (2-Dimensional Map)

[0060]

[0061] Steps 6, 3, and 5 are ORed. The required air intake volume of the vehicle obtained in step 3 or 5 is used as a constraint. The opening of the active air intake grille (AGS) and the fan duty cycle are used as variables. Through three-dimensional and one-dimensional simulation analysis, the vehicle energy consumption under different combinations of variables is obtained. With the minimum vehicle energy consumption (the sum of thermal management accessory energy consumption and vehicle attribute energy consumption) as the objective, DOE (Design of Experiment) analysis is performed to optimize the opening of the active air intake grille and the fan duty cycle.

[0062] Steps 7 and 6 are used to output the corresponding thermal management accessory energy consumption (fan power consumption) and vehicle attribute energy consumption, and then the optimal solution is obtained.

[0063] Step 8: The AGS opening degree and fan duty cycle corresponding to the optimal energy consumption combination are output as control request.

[0064] This embodiment provides an active air intake grille control method for electric vehicles. First, the required air volume of the vehicle is determined based on boundaries such as the air conditioning operating mode, radiator outlet water temperature, target inlet water temperature, vehicle speed, ambient temperature, and compressor high-pressure side pressure. Second, with the required air volume as a constraint, and based on the vehicle thermal management boundary, a 3D simulation is used to perform vehicle speed, AGS opening degree, and fan duty cycle DOE analysis to determine the optimal fan power consumption and overall vehicle attribute energy consumption under the condition of meeting the required air intake volume.

[0065] This embodiment provides an active air intake grille control method for electric vehicles. Based on the air conditioning operating mode, different parameters are selected to calculate the vehicle's required air volume. Using the required air volume as a constraint, the AGS opening is optimized based on the energy consumption of thermal management accessories and the energy consumption of vehicle attributes. This method can dynamically and in real time balance the energy loss of thermal management accessories and the energy loss of vehicle attributes, so that the vehicle's energy consumption reaches the optimal state.

[0066] This embodiment provides an active grille control method for electric vehicles. Energy consumption optimization is achieved through three-dimensional and one-dimensional simulation analysis, which reduces the development cycle and simplifies the control logic.

[0067] Example 2

[0068] This embodiment provides an active grille control device for electric vehicles.

[0069] An active grille shutter control device for electric vehicles, comprising:

[0070] The data acquisition module is configured to acquire the air conditioner's operating mode.

[0071] The first demand air intake calculation module is configured as follows: if the air conditioning is in working mode, for the water circuit, the first demand air intake of the whole vehicle is calculated using the radiator outlet water temperature and the first target inlet water temperature as parameters; for the refrigerant, the second demand air intake of the whole vehicle is calculated using the refrigerant side high pressure as a parameter; the maximum value of the first demand air intake of the whole vehicle and the second demand air intake of the whole vehicle is taken as the demand air intake of the whole vehicle.

[0072] The second calculation module for the required air intake volume is configured to: if the air conditioning is in a non-working state, calculate the required air intake volume of the whole vehicle using the radiator outlet water temperature and the second target inlet water temperature as parameters.

[0073] The optimization module is configured to optimize the active air intake grille opening and fan duty cycle by minimizing the energy consumption of thermal management accessories and the energy consumption of the vehicle attributes, with the vehicle's required air intake volume as a constraint, to obtain the optimal active air intake grille opening.

[0074] If the air conditioning is in working mode, the calculation parameters for the first and second vehicle air intake requirements also include ambient temperature and vehicle speed.

[0075] If the air conditioning is in a non-operating mode, the calculation parameters for the vehicle's required air intake volume also include ambient temperature and vehicle speed.

[0076] Among them, the energy consumption of thermal management accessories and the energy consumption of the whole vehicle were obtained through experimental design analysis.

[0077] It should be noted that the electric vehicle active grille control device provided in the above embodiments is only an example of the division of the above functional modules. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the electronic device can be divided into different functional modules to complete all or part of the functions described above. In addition, the electric vehicle active grille control device and the electric vehicle active grille control method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0078] Example 3

[0079] This embodiment provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the active grille control method for an electric vehicle as described in Embodiment 1 above.

[0080] Example 4

[0081] This embodiment provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements the steps in the active grille control method for an electric vehicle as described in Embodiment 1 above.

[0082] Figure 2 A schematic diagram of the structure of a computer device provided in an exemplary embodiment of this application is shown. The computer device includes a processor and a memory.

[0083] The processor may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor may be implemented using at least one hardware form of DSP (Digital Signal Processing), FPGA (Field Programmable Gate Array), or PLA (Programmable Logic Array). The processor may also include a main processor and coprocessors. The main processor, also known as the CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed on the screen. In some embodiments, the processor may also include an AI (Artificial Intelligence) processor, which is used to handle computational operations related to machine learning.

[0084] The memory may include one or more computer-readable storage media, which may be non-transitory. The memory may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in the memory are used to store at least one computer program, which is configured by a processor to implement the in-vehicle occupant detection method provided in the method embodiments of this application.

[0085] Those skilled in the art will understand that the structure shown does not constitute a limitation on the computer device and may include more or fewer components than shown, or combine certain components, or employ different component arrangements.

[0086] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for controlling an active grille shutter on an electric vehicle, characterized in that, include: Obtain the air conditioner's operating mode; If the air conditioning is in working mode, for the water circuit, the first vehicle required air intake volume is calculated using the radiator outlet water temperature and the first target inlet water temperature as parameters; for the refrigerant, the second vehicle required air intake volume is calculated using the refrigerant side high pressure as a parameter; the maximum value of the first vehicle required air intake volume and the second vehicle required air intake volume is taken as the vehicle required air intake volume. If the air conditioning is in non-operating mode, the required air intake volume of the whole vehicle is calculated using the radiator outlet water temperature and the second target inlet water temperature as parameters. With the required air intake volume of the whole vehicle as a constraint, the active air intake grille opening and fan duty cycle are optimized by minimizing the energy consumption of thermal management accessories and the energy consumption of the whole vehicle attributes, so as to obtain the optimal active air intake grille opening.

2. The method for controlling an active grille shutter on an electric vehicle according to claim 1, characterized in that, If the air conditioning is in working mode, the calculation parameters for the first and second vehicle air intake requirements also include ambient temperature and vehicle speed.

3. The method for controlling an active grille shutter on an electric vehicle according to claim 1, characterized in that, If the air conditioning is in a non-operating mode, the calculation parameters for the vehicle's required air intake volume also include ambient temperature and vehicle speed.

4. The method for controlling an active grille shutter on an electric vehicle according to claim 1, characterized in that, The optimization of the active air intake grille opening and fan duty cycle is achieved through experimental design analysis. In the experimental design analysis process, the required air intake volume of the whole vehicle is used as a constraint, and the active air intake grille opening and fan duty cycle are used as input variables. Through simulation analysis, the energy consumption of thermal management accessories and the energy consumption of the whole vehicle are obtained.

5. An active grille shutter control device for electric vehicles, characterized in that, include: The data acquisition module is configured to acquire the air conditioner's operating mode. The first demand air intake calculation module is configured as follows: if the air conditioning is in working mode, for the water circuit, the first demand air intake of the whole vehicle is calculated using the radiator outlet water temperature and the first target inlet water temperature as parameters; for the refrigerant, the second demand air intake of the whole vehicle is calculated using the refrigerant side high pressure as a parameter; the maximum value of the first demand air intake of the whole vehicle and the second demand air intake of the whole vehicle is taken as the demand air intake of the whole vehicle. The second calculation module for the required air intake volume is configured to: if the air conditioning is in a non-working state, calculate the required air intake volume of the whole vehicle using the radiator outlet water temperature and the second target inlet water temperature as parameters. The optimization module is configured to optimize the active air intake grille opening and fan duty cycle by minimizing the energy consumption of thermal management accessories and the energy consumption of the vehicle attributes, with the vehicle's required air intake volume as a constraint, to obtain the optimal active air intake grille opening.

6. The active grille shutter control device for electric vehicles according to claim 5, characterized in that, If the air conditioning is in working mode, the calculation parameters for the first and second vehicle air intake requirements also include ambient temperature and vehicle speed.

7. The active grille shutter control device for electric vehicles according to claim 5, characterized in that, If the air conditioning is in a non-operating mode, the calculation parameters for the vehicle's required air intake volume also include ambient temperature and vehicle speed.

8. The active grille control device for an electric vehicle according to claim 5, characterized in that, The optimization of the active air intake grille opening and fan duty cycle is achieved through experimental design analysis. In the experimental design analysis process, the required air intake volume of the whole vehicle is used as a constraint, and the active air intake grille opening and fan duty cycle are used as input variables. Through simulation analysis, the energy consumption of thermal management accessories and the energy consumption of the whole vehicle are obtained.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the steps in the active grille control method for an electric vehicle as described in any one of claims 1-4.

10. A computer 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 program, it implements the steps in the active grille control method for an electric vehicle as described in any one of claims 1-4.

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