Control method and device of intelligent grille and electronic fan for vehicle and electronic equipment

Abstract

The application relates to a control method and device of an intelligent grille and an electronic fan for a vehicle and electronic equipment, wherein the control method of the intelligent grille and the electronic fan for the vehicle comprises the following steps: acquiring an environment temperature, pressure data of a heat pump air conditioning system, loop data of an electric drive loop and vehicle data; determining required air volume of the heat pump air conditioning system according to the pressure data, the loop data and the environment temperature; determining a grille opening degree request and a fan duty cycle request according to the required air volume of the heat pump air conditioning system and the vehicle data; and sending the grille opening degree request and the fan duty cycle request to the intelligent grille and the electronic fan respectively, so as to control the work of the intelligent grille and the electronic fan. The application embodiment can control the intelligent grille and the electronic fan according to the corresponding dimensional data of different application scenes, enriches the application scenes and is convenient for users to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle thermal management of pure electric vehicles, and in particular to a control method and device for an intelligent grille and an electronic fan for a vehicle, and an electronic device. BACKGROUND

[0002] To meet the requirements of passenger cabin comfort, power system safety and vehicle range, a pure electric vehicle is generally equipped with a heat pump air conditioning system. An electronic fan and an intelligent grille are important components of the heat pump air conditioning system.

[0003] The speed of the electronic fan directly affects the heat dissipation efficiency and effect of the vehicle heat exchanger, and the intelligent grille directly affects the vehicle heat exchange and wind resistance, thereby affecting the vehicle energy consumption. In addition, the electronic fan and the intelligent grille are important components for controlling the air intake of the vehicle front compartment, and therefore the control of the speed of the electronic fan, the opening degree of the intelligent grille, and the coordinated control of the electronic fan and the intelligent grille are of great significance. SUMMARY

[0004] To solve the above technical problems or at least partially solve the above technical problems, the present application provides a control method and device for an intelligent grille and an electronic fan for a vehicle, and an electronic device.

[0005] In a first aspect, the present application provides a control method for an intelligent grille and an electronic fan for a vehicle, comprising:

[0006] obtaining environmental temperature, pressure data of a heat pump air conditioning system, loop data of an electric drive loop, and vehicle data;

[0007] determining a required air volume of the heat pump air conditioning system according to the pressure data, the loop data, and the environmental temperature;

[0008] determining a grille opening degree request and a fan duty cycle request according to the required air volume of the heat pump air conditioning system and the vehicle data;

[0009] sending the grille opening degree request and the fan duty cycle request to the intelligent grille and the electronic fan, respectively, to control the operation of the intelligent grille and the electronic fan.

[0010] Optionally, determining the required air volume of the heat pump air conditioning system according to the pressure data, the loop data, and the environmental temperature comprises:

[0011] determining a high pressure deviation and a low pressure deviation according to the pressure data;

[0012] determining a high pressure required air volume and a low pressure required air volume of the heat pump air conditioning system based on the high pressure deviation and the low pressure deviation;

[0013] determining a heat dissipation demand air volume of the electric drive circuit according to the circuit data and the ambient temperature;

[0014] determining a demand air volume of the heat pump air conditioning system according to the high pressure demand air volume, the low pressure demand air volume and the heat dissipation demand air volume.

[0015] Optionally, determining a high pressure deviation and a low pressure deviation according to the pressure data comprises:

[0016] determining a current high pressure, a current low pressure, a target high pressure and a target low pressure of the heat pump air conditioning system according to the pressure data;

[0017] determining the high pressure deviation according to the current high pressure and the target high pressure;

[0018] determining the low pressure deviation according to the current low pressure and the target low pressure.

[0019] Optionally, determining a heat dissipation demand air volume of the electric drive circuit according to the circuit data and the ambient temperature comprises:

[0020] determining a motor body temperature of the electric drive circuit according to the circuit data;

[0021] determining a target cooling water temperature of the electric drive circuit according to the ambient temperature;

[0022] determining the heat dissipation demand air volume of the electric drive circuit according to the motor body temperature of the electric drive circuit and the target cooling water temperature of the electric drive circuit.

[0023] Optionally, determining a demand air volume of the heat pump air conditioning system according to the high pressure demand air volume, the low pressure demand air volume and the heat dissipation demand air volume comprises:

[0024] determining whether a passenger cabin refrigeration request or a battery refrigeration request is received;

[0025] if the passenger cabin refrigeration request or the battery refrigeration request is received, determining that the demand air volume of the heat pump air conditioning system is equal to a sum of the high pressure demand air volume and the heat dissipation demand air volume of the electric drive circuit;

[0026] or, if the passenger cabin refrigeration request or the battery refrigeration request is not received, determining whether a passenger cabin heating request or a battery heating request is received;

[0027] or, if the passenger cabin heating request or the battery heating request is received, determining that the demand air volume of the heat pump air conditioning system is equal to a sum of the low pressure demand air volume and the heat dissipation demand air volume of the electric drive circuit;

[0028] Alternatively, if the passenger cabin heating request or the battery heating request is not received, it is determined that the required air volume of the heat pump air conditioning system is equal to the heat dissipation required air volume of the electric drive circuit.

[0029] Optionally, the grille opening degree request and the fan duty cycle request are determined according to the required air volume of the heat pump air conditioning system and the vehicle data, comprising:

[0030] The vehicle speed, the current opening degree of the grille and the current duty cycle value of the fan are determined according to the vehicle data;

[0031] The head-on wind volume capacity is determined according to the vehicle speed and the current opening degree of the grille;

[0032] The comprehensive wind volume capacity is determined according to the vehicle speed and the current duty cycle value of the fan;

[0033] The grille opening degree request is determined according to the required air volume of the heat pump air conditioning system and the head-on wind volume capacity;

[0034] When the intelligent grille opening degree indicated by the grille opening degree request exceeds a preset opening degree range, the fan duty cycle request is determined according to the required air volume of the heat pump air conditioning system and the comprehensive wind volume capacity.

[0035] Optionally, the grille opening degree request is determined according to the required air volume of the heat pump air conditioning system and the head-on wind volume capacity, comprising:

[0036] The first deviation is obtained by subtracting the head-on wind volume capacity from the required air volume of the heat pump air conditioning system;

[0037] It is determined whether the first deviation is greater than 0;

[0038] If the first deviation is greater than 0, the intelligent grille opening degree is increased by the intelligent grille opening degree request;

[0039] If the first deviation is less than or equal to 0, the intelligent grille opening degree is reduced by the intelligent grille opening degree request.

[0040] Optionally, the fan duty cycle request is determined according to the required air volume of the heat pump air conditioning system and the comprehensive wind volume capacity, comprising:

[0041] The second deviation is obtained by subtracting the comprehensive wind volume capacity from the required air volume of the heat pump air conditioning system;

[0042] It is determined whether the second deviation is greater than 0;

[0043] If the second deviation is greater than 0, the electronic fan duty cycle is increased by the electronic fan duty cycle request;

[0044] If the second deviation is less than or equal to 0, a decrease in the electronic fan duty cycle is indicated by an electronic fan duty cycle request.

[0045] In a second aspect, the present application provides a control device for an intelligent grille and an electronic fan of a vehicle, comprising:

[0046] An acquisition module is configured to acquire an ambient temperature, pressure data of a heat pump air conditioning system, loop data of an electric drive loop, and vehicle data;

[0047] A first determination module is configured to determine a required air volume of the heat pump air conditioning system according to the pressure data, the loop data, and the ambient temperature;

[0048] A second determination module is configured to determine a grille opening degree request and a fan duty cycle request according to the required air volume of the heat pump air conditioning system and the vehicle data;

[0049] A sending module is configured to send the grille opening degree request and the fan duty cycle request to the intelligent grille and the electronic fan, respectively, to control the operation of the intelligent grille and the electronic fan.

[0050] In a third aspect, the present application provides an electronic device, comprising a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory are in communication with each other through the communication bus;

[0051] The memory is configured to store a computer program;

[0052] The processor is configured to execute the program stored in the memory, and implement the control method for the intelligent grille and the electronic fan of the vehicle according to any one of the first aspect.

[0053] The present application has the following beneficial effects:

[0054] The embodiments of the present application determine the grille opening degree request and the fan duty cycle request according to the ambient temperature, the pressure data of the heat pump air conditioning system, the loop data of the electric drive loop, and the vehicle data, and then control the operation of the intelligent grille and the electronic fan. Since the data of different dimensions corresponding to different application scenarios are different, the present application can control the intelligent grille and the electronic fan according to the data of the corresponding dimensions of different application scenarios, enrich the application scenarios, and facilitate user use. BRIEF DESCRIPTION OF DRAWINGS

[0055] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0056] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

[0057] Figure 1 A flow chart of a control method of a vehicle intelligent grille and an electronic fan provided in an embodiment of the present application;

[0058] Figure 2 A structural diagram of a control device of a vehicle intelligent grille and an electronic fan provided in an embodiment of the present application;

[0059] Figure 3 A structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0060] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the protection scope of the present application.

[0061] Figure 1 A control method of a vehicle intelligent grille and an electronic fan provided in an embodiment of the present application, the control method of the vehicle intelligent grille and the electronic fan comprising:

[0062] In step S101, environment temperature, pressure data of a heat pump air conditioning system, loop data of an electric drive loop and vehicle data are acquired.

[0063] In the embodiments of the present application, the pressure data of the heat pump air conditioning system comprises current high-pressure pressure of the heat pump air conditioning system, current low-pressure pressure of the heat pump air conditioning system, target high-pressure pressure and target low-pressure pressure, etc., the loop data of the electric drive loop comprises motor body temperature of the electric drive loop, etc., and the vehicle data comprises vehicle speed, current opening degree of the grille and current duty cycle value of the fan, etc.

[0064] In step S102, required air volume of the heat pump air conditioning system is determined according to the pressure data, the loop data and the environment temperature.

[0065] In this step, the deviation of the current pressure from the target pressure can be determined according to the pressure data, the deviation of the current temperature from the target temperature in the electric drive circuit can be determined according to the circuit data and the ambient temperature, and then the required air volume of the heat pump air conditioning system can be determined according to the deviation of the current pressure from the target pressure and the deviation of the current temperature from the target temperature.

[0066] In this step, the required air volume of the heat pump air conditioning system can be determined according to the vehicle data.

[0067] In this step, the air intake amount of the current vehicle front grille, i.e., the head-on wind volume capacity, and the sum of the natural air intake amount of the current vehicle front grille and the air volume brought by the fan, i.e., the comprehensive air volume capacity, can be determined according to the vehicle data, and then the grille opening degree request and the fan duty cycle request can be determined according to the head-on wind volume capacity, the comprehensive air volume capacity and the required air volume of the heat pump air conditioning system.

[0068] In this step, the grille opening degree request and the fan duty cycle request can be sent to the intelligent grille and the electronic fan respectively to control the working of the intelligent grille and the electronic fan.

[0069] The electronic fan in the embodiment of the present application refers to a stepless speed-regulating electronic fan controlled by PWM, and the intelligent grille refers to the intelligent grille of the vehicle heat pump air conditioning system.

[0070] After the grille opening degree request and the fan duty cycle request are determined, the grille opening degree request and the fan duty cycle request can be sent to the intelligent grille and the electronic fan respectively, so that the intelligent grille and the electronic fan will work according to the grille opening degree request and the fan duty cycle request respectively. In actual application, the intelligent grille and the electronic fan can work individually according to the grille opening degree request and the fan duty cycle request respectively, or can work cooperatively.

[0071] The embodiment of the present application determines the grille opening degree request and the fan duty cycle request according to the data in multiple dimensions of the ambient temperature, the pressure data of the heat pump air conditioning system, the circuit data of the electric drive circuit and the vehicle data, and then controls the working of the intelligent grille and the electronic fan. Since the data in different dimensions corresponding to different application scenarios are different, the present application can control the intelligent grille and the electronic fan according to the data in the dimensions corresponding to different application scenarios, which enriches the application scenarios and is convenient for users to use.

[0072] In another embodiment of the present application, step S102 of determining the required air volume of the heat pump air conditioning system according to the pressure data, the circuit data and the ambient temperature comprises:

[0073] In this step, the high-pressure pressure deviation and the low-pressure pressure deviation can be determined according to the pressure data.

[0074] In this step, a high-pressure pressure deviation between the target high-pressure pressure and the current high-pressure pressure can be determined based on the pressure data, and a low-pressure pressure deviation between the target low-pressure pressure and the current low-pressure pressure can be determined based on the pressure data.

[0075] In this step, a high-pressure demand air volume of the heat pump air conditioning system can be determined based on the high-pressure pressure deviation and the low-pressure pressure deviation.

[0076] In this step, the high-pressure demand air volume NCCe of the heat pump air conditioning system can be calculated by PI using the high-pressure pressure deviation EP HP, including: taking the sum of the high-pressure demand air volume request NCCn-1 at the last moment and the high-pressure demand air volume NCCe as the current high-pressure demand air volume request NCCn, that is, NCCn=NCCn-1+NCCe; wherein the high-pressure demand air volume NCCe can be calculated by the following formula: NCCe=An+Bn; An=Pcc*EP HP; Bn=Icc*EP HP+Bn-1; n>0. Wherein Pcc and Icc are adjustment parameters related to the environment temperature, which are obtained by later calibration test.

[0077] The low-pressure demand air volume F LP of the heat pump air conditioning system is calculated according to the low-pressure pressure deviation EP LP, which is the same as the above step.

[0078] The embodiments of the present application calculate the high-pressure demand air volume and the low-pressure demand air volume of the heat pump air conditioning system by PI, which can improve the control accuracy and stability.

[0079] In this step, the heat dissipation demand air volume of the electric drive circuit can be determined according to the circuit data and the environment temperature.

[0080] In addition to maintaining the high-pressure pressure and the low-pressure pressure of the heat pump air conditioning system, the electronic fan and the intelligent grille also need to meet the heat dissipation demand of the whole vehicle electric drive circuit. In this step, the current motor body temperature can be determined according to the circuit data, and the target cooling water temperature to be cooled to can be determined according to the environment temperature, and then the heat dissipation demand air volume of the electric drive circuit can be determined according to the deviation between the motor local temperature and the target cooling water temperature.

[0081] In this step, the demand air volume of the heat pump air conditioning system can be determined according to the high-pressure demand air volume, the low-pressure demand air volume and the heat dissipation demand air volume.

[0082] In this step, different operations can be performed based on the high-pressure demand air volume, the low-pressure demand air volume and the heat dissipation demand air volume according to the cooling or heating demand of the passenger compartment and the battery, and the operation result is taken as the demand air volume of the heat pump air conditioning system.

[0083] In still another embodiment of the present application, the step S201 of determining the high-pressure pressure deviation and the low-pressure pressure deviation according to the pressure data comprises:

[0084] The step S301 comprises determining the current high-pressure pressure, the current low-pressure pressure, the target high-pressure pressure and the target low-pressure pressure of the heat pump air conditioning system according to the pressure data.

[0085] In this step, the current high-pressure pressure, the current low-pressure pressure, the target high-pressure pressure and the target low-pressure pressure can be directly extracted from the pressure data.

[0086] In the embodiments of the present application, the current high-pressure pressure is collected by the pressure sensor arranged at the outlet of the compressor, the target high-pressure pressure is obtained according to the ambient temperature and the preset corresponding relationship between the ambient temperature and the high-pressure pressure, and the preset corresponding relationship between the ambient temperature and the high-pressure pressure is obtained through the later calibration test.

[0087] Similarly, the current low-pressure pressure is collected by the pressure sensor arranged at the outlet of the compressor, the target low-pressure pressure is obtained according to the ambient temperature and the preset corresponding relationship between the ambient temperature and the low-pressure pressure, and the preset corresponding relationship between the ambient temperature and the low-pressure pressure is obtained through the later calibration test.

[0088] The step S302 comprises determining the high-pressure pressure deviation according to the current high-pressure pressure and the target high-pressure pressure.

[0089] In this step, the difference between the target high-pressure pressure and the current high-pressure pressure can be taken as the high-pressure pressure deviation.

[0090] The step S303 comprises determining the low-pressure pressure deviation according to the current low-pressure pressure and the target low-pressure pressure.

[0091] In this step, the difference between the target low-pressure pressure and the current low-pressure pressure can be taken as the low-pressure pressure deviation.

[0092] In still another embodiment of the present application, the step S203 of determining the heat dissipation demand air volume of the electric drive circuit according to the circuit data and the ambient temperature comprises:

[0093] The step S401 comprises determining the motor body temperature of the electric drive circuit according to the circuit data.

[0094] In this step, the motor body temperature can be directly extracted from the circuit data.

[0095] In the embodiments of the present application, the motor body temperature is obtained by the temperature sensor arranged on the motor body of the electric drive circuit.

[0096] Step S402, determining a target cooling water temperature of the electric drive circuit according to the ambient temperature;

[0097] In the embodiment of the application, the target cooling water temperature is obtained according to the ambient temperature and a preset corresponding relationship between the ambient temperature and the cooling water temperature, and the preset corresponding relationship between the ambient temperature and the cooling water temperature is obtained through a later calibration test.

[0098] Step S403, determining a heat dissipation demand air volume of the electric drive circuit according to the motor body temperature of the electric drive circuit and the target cooling water temperature of the electric drive circuit.

[0099] In this step, the heat dissipation demand air volume of the electric drive circuit can be determined according to the electric drive circuit target cooling water temperature and the electric drive circuit motor body temperature.

[0100] In another embodiment of the application, step S204 determines the demand air volume of the heat pump air conditioning system according to the high-pressure demand air volume, the low-pressure demand air volume and the heat dissipation demand air volume, and includes:

[0101] determining whether a passenger compartment cooling request or a battery cooling request is received;

[0102] If the passenger compartment cooling request or the battery cooling request is received, determining that the demand air volume of the heat pump air conditioning system is equal to the sum of the high-pressure demand air volume and the heat dissipation demand air volume of the electric drive circuit;

[0103] Alternatively, if the passenger compartment cooling request or the battery cooling request is not received, determining whether a passenger compartment heating request or a battery heating request is received;

[0104] Alternatively, if the passenger compartment heating request or the battery heating request is received, determining that the demand air volume of the heat pump air conditioning system is equal to the sum of the low-pressure demand air volume and the heat dissipation demand air volume of the electric drive circuit;

[0105] Alternatively, if the passenger compartment heating request or the battery heating request is not received, determining that the demand air volume of the heat pump air conditioning system is equal to the heat dissipation demand air volume of the electric drive circuit.

[0106] In another embodiment of the application, step S103 determines the grille opening degree request and the fan duty cycle request according to the demand air volume of the heat pump air conditioning system and the vehicle data, and includes:

[0107] Step S501, determining the vehicle speed, the current grille opening degree and the current fan duty cycle value according to the vehicle data;

[0108] In this step, the vehicle speed, the current grille opening degree and the current fan duty cycle value can be directly extracted from the vehicle data.

[0109] Step S502, determining the oncoming wind volume capacity according to the vehicle speed and the current opening degree of the grille;

[0110] The current air intake volume of the front grille of the vehicle, i.e. the oncoming wind volume capacity, can be determined according to the vehicle speed and the current opening degree of the grille by looking up a table. The table can be obtained by real vehicle test measurement and CFD (Computational Fluid Dynamics) simulation.

[0111] Step S503, determining the comprehensive wind volume capacity according to the vehicle speed and the current duty cycle value of the fan;

[0112] The sum of the natural air intake volume of the front grille of the vehicle and the air volume brought by the fan, i.e. the comprehensive wind volume capacity, can be determined according to the vehicle speed and the current duty cycle value of the fan by looking up a table. The table can be obtained by real vehicle test measurement and CFD (Computational Fluid Dynamics) simulation.

[0113] Step S504, determining the grille opening degree request according to the demand air volume of the heat pump air conditioning system and the oncoming wind volume capacity;

[0114] In this step, the grille opening degree request can be adjusted according to whether the first deviation between the demand air volume of the heat pump air conditioning system and the oncoming wind volume capacity is greater than 0.

[0115] Further, it can be judged whether the intelligent grille opening degree indicated by the grille opening degree request exceeds a preset opening degree range, for example, the preset opening degree range is 0-90 degrees.

[0116] For example: it is judged whether the latest intelligent grille opening degree is greater than 90 degrees after the intelligent grille opening degree is increased according to the intelligent grille opening degree request. If the intelligent grille opening degree request is not greater than 90 degrees, i.e. less than or equal to 90 degrees, the intelligent grille opening degree request is output to the intelligent grille to control the intelligent grille opening degree change. At this time, the fan duty cycle request can not be determined according to the demand air volume of the heat pump air conditioning system and the comprehensive wind volume capacity, because the oncoming wind brought by the vehicle speed and the intelligent grille opening degree can already meet the demand air volume of the heat pump air conditioning system.

[0117] If the intelligent grille opening degree request is greater than 90 degrees, the intelligent grille opening degree request for indicating adjusting the intelligent grille opening degree to 90 degrees is output to the intelligent grille. Generally, the intelligent grille opening degree change range is 0 to 90 degrees. When the intelligent grille opening degree request exceeds 90 degrees, it indicates that the oncoming wind brought by the vehicle speed and the intelligent grille opening degree can not meet the demand air volume of the heat pump air conditioning system. At this time, the intelligent grille is maintained at the maximum opening degree of 90 degrees, and the fan duty cycle change is further controlled.

[0118] Step S505, when the intelligent grille opening degree indicated by the grille opening degree request exceeds the preset opening degree range, determining a fan duty cycle request according to the required air volume of the heat pump air conditioning system and the comprehensive air volume capacity.

[0119] In this step, the fan duty cycle request can be adjusted according to whether the second deviation of the required air volume of the heat pump air conditioning system and the comprehensive air volume capacity is greater than 0.

[0120] The embodiments of the present application can indicate a new intelligent grille opening degree through the grille opening degree request, provide the required air volume of the heat pump air conditioning system by using the vehicle speed and the new intelligent grille opening degree, and realize the cooperative work of the intelligent grille and the electronic fan for providing the required air volume of the air conditioning system by indicating a new fan duty cycle through the fan duty cycle request when the head-on wind brought by the vehicle speed and the new intelligent grille opening degree cannot meet the required air volume of the heat pump air conditioning system.

[0121] The intelligent grille and the electronic fan can be further controlled by comparing the air volume provided by the current fan duty cycle value.

[0122] In another embodiment of the present application, step S504 of determining the grille opening degree request according to the required air volume of the heat pump air conditioning system and the head-on wind air volume capacity comprises:

[0123] obtaining a first deviation by subtracting the head-on wind air volume capacity from the required air volume of the heat pump air conditioning system;

[0124] determining whether the first deviation is greater than 0;

[0125] if the first deviation is greater than 0, indicating to increase the intelligent grille opening degree through the intelligent grille opening degree request; the change rate of the increased intelligent grille opening degree needs to be calibrated later, and is usually the degrees changed per second.

[0126] if the first deviation is less than or equal to 0, indicating to decrease the intelligent grille opening degree through the intelligent grille opening degree request. The change rate of the decreased intelligent grille opening degree needs to be calibrated later, and is usually the degrees changed per second.

[0127] In another embodiment of the present application, step S505 of determining the fan duty cycle request according to the required air volume of the heat pump air conditioning system and the comprehensive air volume capacity comprises:

[0128] obtaining a second deviation by subtracting the comprehensive air volume capacity from the required air volume of the heat pump air conditioning system;

[0129] determining whether the second deviation is greater than 0;

[0130] If the second deviation is greater than 0, increase the electronic fan duty cycle by the electronic fan duty cycle request indication; the change rate of the electronic fan duty cycle needs to be calibrated later, usually the duty cycle changes per second.

[0131] If the second deviation is less than or equal to 0, decrease the electronic fan duty cycle by the electronic fan duty cycle request indication. The change rate of the electronic fan duty cycle needs to be calibrated later, usually the duty cycle changes per second.

[0132] Further, it can be judged whether the latest electronic fan duty cycle is greater than 90 after the electronic fan duty cycle is increased according to the electronic fan duty cycle request.

[0133] If the electronic fan duty cycle request is not greater than 90, that is, less than or equal to 90, output the electronic fan duty cycle request to the electronic fan to control the electronic fan duty cycle change.

[0134] If the electronic fan duty cycle request is greater than 90, output the electronic fan duty cycle request to the electronic fan for indicating adjusting the electronic fan duty cycle to 90. Usually, the electronic fan duty cycle change range is 7 to 90, and when the electronic fan duty cycle request exceeds 90 degrees, the maximum duty cycle of maintaining the electronic fan duty cycle at 90 is maintained at this time.

[0135] In another embodiment of the present application, a control device for an intelligent grille and an electronic fan for a vehicle is also provided, as shown in Figure 2 The control device comprises:

[0136] An acquisition module 11 is configured to acquire an ambient temperature, pressure data of a heat pump air conditioning system, loop data of an electric drive loop, and vehicle data;

[0137] A first determination module 12 is configured to determine a required air volume of the heat pump air conditioning system according to the pressure data, the loop data, and the ambient temperature;

[0138] A second determination module 13 is configured to determine a grille opening degree request and a fan duty cycle request according to the required air volume of the heat pump air conditioning system and the vehicle data;

[0139] A sending module 14 is configured to send the grille opening degree request and the fan duty cycle request to an intelligent grille and an electronic fan respectively, so as to control the working of the intelligent grille and the electronic fan.

[0140] In another embodiment of the present application, an electronic device is also provided, which comprises a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory complete mutual communication through the communication bus;

[0141] The memory is configured to store a computer program.

[0142] The processor is configured to implement the control method of the intelligent grille and the electronic fan of the vehicle according to any one of the preceding method embodiments when executing a program stored in the memory.

[0143] The electronic device provided by the embodiment of the application can determine the grille opening degree request and the fan duty cycle request according to the data in multiple dimensions of the ambient temperature, the pressure data of the heat pump air conditioning system, the loop data of the electric drive loop and the vehicle data, and then control the intelligent grille and the electronic fan to work. Since the data in the dimensions corresponding to different application scenarios are different, the application can control the intelligent grille and the electronic fan according to the data in the dimensions corresponding to different application scenarios, enrich the application scenarios, and facilitate user use.

[0144] The communication bus 1140 mentioned above can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The communication bus 1140 can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, Figure 3 Only one thick line is used in the above-mentioned electronic device, but it does not mean that there is only one bus or one type of bus.

[0145] The communication interface 1120 is used for communication between the above-mentioned electronic device and other devices.

[0146] The memory 1130 can include a random access memory (RAM) and can also include a non-volatile memory, such as at least one disk memory. Optionally, the memory can also be at least one storage device located away from the processor.

[0147] The processor 1110 mentioned above can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component.

[0148] It has to be noted that, in the present document, relational terms are intended only to convey a relative sense of order such that, where, for example, a first entity is said to be to a second entity "close", it is contemplated that a third entity affording an even closer relationship to the second entity would also be regarded as "close" of both the first and second entities. Furthermore, you will see that the terms "comprise", "comprising", or other variations, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Also, use of "including" as well as "comprising" their derivatives, is intended to convey the inclusion of an introduction of an element or a group of elements to a process, method, article, or apparatus that are not necessarily essential to the process, method, article, or apparatus. Further, the use of "first", "second", "third", etc. is intended to convey a relative sense of order such that, for example, "first" is intended to convey a sense of order of "before" and "second" is intended to convey a sense of order of "after" and so on. The use of "first", "second", "third", etc. is not intended to convey a sense of order of "before" or "after" unless explicitly stated otherwise.

[0149] The foregoing is considered as illustrative only of the principles of the application. Further, various modifications can be made to the embodiments described herein, without departing from the spirit or scope of the application. Accordingly, reference should be made solely to the appended claims for determining the full scope of the application.

Claims

1. A method for controlling a vehicle intelligent grille and an electronic fan, characterized in that: include: Obtain ambient temperature, pressure data of the heat pump air conditioning system, circuit data of the electric drive circuit, and vehicle data; determining the required air volume of the heat pump air conditioning system according to the pressure data, the loop data and the ambient temperature; Determining the required air volume of the heat pump air conditioning system according to the pressure data, the loop data, and the ambient temperature includes: determining a high pressure deviation and a low pressure deviation based on the pressure data; determining a high-pressure required air volume and a low-pressure required air volume of the heat pump air conditioning system based on the high-pressure pressure deviation and the low-pressure pressure deviation; Determining the required air volume for heat dissipation of the electric drive circuit according to the circuit data and the ambient temperature; Determining the required air volume of the heat pump air conditioning system according to the high-pressure required air volume, the low-pressure required air volume and the heat dissipation required air volume; Determining the required air volume of the heat pump air conditioning system according to the high-pressure required air volume, the low-pressure required air volume, and the heat dissipation required air volume includes: determining whether a passenger compartment cooling request or a battery cooling request is received; If the passenger compartment cooling request or the battery cooling request is received, determining that the required air volume of the heat pump air conditioning system is equal to the sum of the high-voltage required air volume and the heat dissipation required air volume of the electric drive circuit; Alternatively, if the passenger compartment cooling request or the battery cooling request is not received, determining whether a passenger compartment heating request or a battery heating request is received; Alternatively, if the passenger compartment heating request or the battery heating request is received, determining that the required air volume of the heat pump air conditioning system is equal to the sum of the low-pressure required air volume and the heat dissipation required air volume of the electric drive circuit; Alternatively, if the passenger compartment heating request or the battery heating request is not received, determining that the required air volume of the heat pump air conditioning system is equal to the heat dissipation required air volume of the electric drive circuit; determining a grille opening request and a fan duty cycle request based on the required air volume of the heat pump air conditioning system and the vehicle data; The grille opening request and the fan duty cycle request are sent to the smart grille and the electronic fan respectively to control the operation of the smart grille and the electronic fan.

2. The control method of the vehicle intelligent grille and electronic fan according to claim 1, characterized in that: Determining a high pressure deviation and a low pressure deviation according to the pressure data includes: Determine the current high pressure, current low pressure, target high pressure, and target low pressure of the heat pump air conditioning system according to the pressure data; determining the high-pressure deviation according to the current high-pressure and the target high-pressure; The low pressure deviation is determined according to the current low pressure and the target low pressure.

3. The control method of the vehicle intelligent grille and electronic fan according to claim 1, characterized in that: Determining the required air volume for heat dissipation of the electric drive circuit according to the circuit data and the ambient temperature includes: determining a motor body temperature of the electric drive circuit according to the circuit data; determining a target cooling water temperature of the electric drive circuit according to the ambient temperature; The required air volume for heat dissipation of the electric drive circuit is determined according to the motor body temperature of the electric drive circuit and the target cooling water temperature of the electric drive circuit.

4. The control method of the vehicle intelligent grille and electronic fan according to claim 1, characterized in that: Determining a grille opening request and a fan duty cycle request according to the required air volume of the heat pump air conditioning system and the vehicle data includes: determining a vehicle speed, a current grille opening, and a current duty cycle value of the fan based on the vehicle data; determining the headwind volume capacity based on the vehicle speed and the current grille opening; determining a comprehensive air volume capacity based on a vehicle speed and a current duty cycle value of the fan; determining a grille opening request based on the required air volume of the heat pump air conditioning system and the headwind air volume capacity; When the smart grille opening indicated by the grille opening request exceeds a preset opening range, a fan duty cycle request is determined according to the required air volume of the heat pump air conditioning system and the comprehensive air volume capacity.

5. The control method of the vehicle intelligent grille and electronic fan according to claim 4, characterized in that: Determining a grille opening request according to the required air volume of the heat pump air conditioning system and the headwind air volume capacity includes: Subtracting the required air volume of the heat pump air conditioning system from the headwind air volume capacity to obtain a first deviation; Determining whether the first deviation is greater than 0; If the first deviation is greater than 0, increasing the smart grille opening through a smart grille opening request instruction; If the first deviation is less than or equal to 0, the smart grille opening is decreased through a smart grille opening request instruction.

6. The control method of the vehicle intelligent grille and electronic fan according to claim 4, characterized in that: Determining a fan duty cycle request according to the required air volume of the heat pump air conditioning system and the comprehensive air volume capacity includes: Subtracting the required air volume of the heat pump air conditioning system from the comprehensive air volume capacity to obtain a second deviation; Determining whether the second deviation is greater than 0; If the second deviation is greater than 0, increasing the duty cycle of the electronic fan through an electronic fan duty cycle request instruction; If the second deviation is less than or equal to 0, the electronic fan duty cycle request indicates that the electronic fan duty cycle is reduced.

7. A control device for a vehicle intelligent grille and electronic fan, characterized in that: include: An acquisition module is used to obtain ambient temperature, pressure data of the heat pump air conditioning system, circuit data of the electric drive circuit, and vehicle data; a first determining module, configured to determine a required air volume of the heat pump air conditioning system according to the pressure data, the loop data, and the ambient temperature; Determining the required air volume of the heat pump air conditioning system according to the pressure data, the loop data and the ambient temperature, including: determining a high-pressure pressure deviation and a low-pressure pressure deviation according to the pressure data; determining the high-pressure required air volume and the low-pressure required air volume of the heat pump air conditioning system based on the high-pressure pressure deviation and the low-pressure pressure deviation; determining the heat dissipation required air volume of the electric drive loop according to the loop data and the ambient temperature; determining the required air volume of the heat pump air conditioning system according to the high-pressure required air volume, the low-pressure required air volume and the heat dissipation required air volume; determining the required air volume of the heat pump air conditioning system according to the high-pressure required air volume, the low-pressure required air volume and the heat dissipation required air volume, including: judging whether a passenger cabin cooling request or an electric drive request is received battery cooling request; if the passenger compartment cooling request or the battery cooling request is received, determining that the required air volume of the heat pump air conditioning system is equal to the sum of the high-pressure required air volume and the heat dissipation required air volume of the electric drive circuit; or, if the passenger compartment cooling request or the battery cooling request is not received, determining whether a passenger compartment heating request or a battery heating request is received; or, if the passenger compartment heating request or the battery heating request is received, determining that the required air volume of the heat pump air conditioning system is equal to the sum of the low-pressure required air volume and the heat dissipation required air volume of the electric drive circuit; or, if the passenger compartment heating request or the battery heating request is not received, determining that the required air volume of the heat pump air conditioning system is equal to the heat dissipation required air volume of the electric drive circuit; a second determining module, configured to determine a grille opening request and a fan duty cycle request according to the required air volume of the heat pump air conditioning system and the vehicle data; The sending module is used to send the grille opening request and the fan duty cycle request to the smart grille and the electronic fan respectively, so as to control the operation of the smart grille and the electronic fan.

8. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; Memory for storing computer programs; The processor is configured to implement the control method for the vehicle intelligent grille and the electronic fan according to any one of claims 1 to 6 when executing the program stored in the memory.

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