Fan power control method, device, vehicle and storage medium

Abstract

The present invention provides a fan power control method, device, vehicle, and storage medium. The method comprises: determining a first power corresponding to an air conditioning on request and a second power corresponding to a fan on request, wherein the second power is determined based on the ambient temperature and the coolant temperature, and the second power decreases when the absolute value of the coolant temperature change rate corresponding to the coolant temperature is lower and the difference between the ambient temperature and the coolant temperature is within a preset range; and determining the maximum fan power between the first power and the second power as the target fan power, and using the target fan power to control fan rotation. The present invention can use the determined target fan power to quickly adjust the vehicle temperature, thereby reducing operating energy consumption and improving vehicle temperature control.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to a fan power control method, device, vehicle and storage medium. Background Art

[0002] Nowadays, most people choose private cars for travel, which are comfortable and convenient. When encountering hot or cold weather, it is usually necessary to turn on the air conditioner to adjust the temperature of the passenger compartment. The air conditioning system generates a certain amount of heat during operation, and other thermal management systems in the vehicle also generate a lot of heat during operation. In order to ensure the normal operation of the vehicle, a fan is needed to dissipate heat from the vehicle.

[0003] Currently, vehicle air conditioning is activated based on user requests, and the power output is fixed. During the initial operation of a vehicle, heat dissipation requirements are low. However, as the vehicle ages, heat dissipation requirements increase. This, combined with the need to regulate the passenger compartment's temperature, results in fans being unable to accurately regulate the vehicle's temperature. Due to the generally high power of current fans, prolonged fan operation results in significant energy consumption. Summary of the Invention

[0004] Embodiments of the present invention provide a fan power control method, device, vehicle, and storage medium to solve the problems in the prior art that fans cannot accurately adjust vehicle temperature and consume a lot of energy.

[0005] In a first aspect, an embodiment of the present invention provides a method for controlling fan power, comprising:

[0006] When the vehicle is in an operating condition, determining a first power corresponding to an air conditioning on request and a second power corresponding to a fan on request, wherein the second power is determined based on an ambient temperature and a coolant temperature, and the lower the absolute value of the coolant temperature change rate corresponding to the coolant temperature and the difference between the ambient temperature and the coolant temperature is within a preset range, the lower the second power;

[0007] The maximum fan power between the first power and the second power is used as the target fan power, and the fan rotation is controlled by using the target fan power.

[0008] In a possible implementation, determining the second power corresponding to the fan-on request includes:

[0009] Get the vehicle's coolant temperature and ambient temperature;

[0010] A second power corresponding to the fan-on request is determined according to the coolant temperature and the ambient temperature.

[0011] In a possible implementation, determining the second power corresponding to the fan start request according to the coolant temperature and the ambient temperature includes:

[0012] According to the coolant temperature and the ambient temperature, a three-dimensional preset table is queried to determine a second power corresponding to the fan start request.

[0013] In a possible implementation, the calibration process of the three-dimensional preset table is as follows:

[0014] Set the initial fan power at the current ambient temperature and the first coolant temperature;

[0015] After the fan runs for a preset time, the second coolant temperature is measured, and a corresponding coolant temperature change rate is calculated based on the second coolant temperature and the first coolant temperature;

[0016] When a difference between the coolant temperature change rate and the target coolant temperature change rate is within a preset range, determining the initial fan power to be the second power;

[0017] When the difference between the coolant temperature change rate and the target coolant temperature change rate is not within a preset range, resetting the fan power for calibration until the difference between the coolant temperature change rate and the target coolant temperature change rate is within the preset range;

[0018] According to the above process of determining the correspondence between the current ambient temperature, the first coolant temperature and the second power, the fan powers corresponding to different ambient temperatures and different coolant temperatures are determined to obtain a three-dimensional preset table.

[0019] In a possible implementation, before determining the first power corresponding to the air conditioner on request and the second power corresponding to the fan on request when the vehicle is in the operating condition, the method further includes:

[0020] Obtaining a coolant temperature change rate corresponding to a current third coolant temperature of the vehicle, where the coolant temperature change rate is calculated based on the third coolant temperature and a fourth coolant temperature measured at a next measurement moment;

[0021] The order of turning on the air conditioner and the fan is determined according to the coolant temperature change rate.

[0022] In a possible implementation, determining the order of turning on the air conditioner and the fan according to the coolant temperature includes:

[0023] When the absolute value of the coolant temperature change rate corresponding to the coolant temperature is greater than a preset value, sending the fan start request to turn on the fan;

[0024] When the fan rotates continuously for a preset time, the air conditioner start request is sent to adjust the temperature.

[0025] In a possible implementation, determining the order of turning on the air conditioner and the fan according to the coolant temperature includes:

[0026] When the absolute value of the coolant temperature change rate corresponding to the coolant temperature is greater than a preset value, sending the fan start request to turn on the fan;

[0027] After the fan continues to rotate for a preset time, obtaining the current fifth coolant temperature;

[0028] If the fifth coolant temperature is within a preset temperature range, sending the air-conditioning start request to adjust the temperature;

[0029] Otherwise, the fan is kept on until the current coolant temperature is within a preset temperature range, and then the air conditioner on request is sent to adjust the temperature.

[0030] In a second aspect, an embodiment of the present invention provides a fan power control device, comprising:

[0031] a determination module, configured to determine, when the vehicle is in an operating condition, a first power corresponding to an air conditioning on request and a second power corresponding to a fan on request, wherein the second power is determined based on an ambient temperature and a coolant temperature, and the second power is smaller when an absolute value of a coolant temperature change rate corresponding to the coolant temperature is lower and a difference between the ambient temperature and the coolant temperature is within a preset range;

[0032] The control module is configured to use the maximum fan power between the first power and the second power as a target fan power, and control the rotation of the fan using the target fan power.

[0033] In a third aspect, an embodiment of the present invention provides a vehicle, comprising an electronic device, the electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the fan power control method as described in the first aspect or any possible implementation of the first aspect are implemented.

[0034] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the steps of the fan power control method described in the first aspect or any possible implementation of the first aspect.

[0035] Embodiments of the present invention provide a fan power control method, device, vehicle, and storage medium. When the vehicle is in operation, the maximum fan power, between a first power corresponding to an air conditioning on request and a second power corresponding to a fan on request, is determined as a target fan power. Initially, during the initial stages of vehicle operation, the heat dissipation requirements of the equipment in the vehicle's motor circuit are relatively low. If the passenger compartment cooling requirements are high, the first power is greater than the second power. In this case, the first power is used as the fan power to rapidly cool the passenger compartment. After the vehicle has been operating for a long time, the heat dissipation requirements of the equipment in the vehicle's motor circuit are high, and the second power is greater than the first power. In this case, the second power is used to cool the equipment in the vehicle's motor circuit. This allows the vehicle fan to quickly and accurately adjust the vehicle temperature under different conditions.

[0036] In addition, since the second power is determined based on the ambient temperature and the coolant temperature, the lower the coolant temperature change rate obtained based on the coolant temperature and the last measured coolant temperature is, and when the difference between the ambient temperature and the coolant temperature is within a preset range, the second power is smaller. At this time, the second power is smaller than the power directly based on the request in the prior art. Therefore, when the second power is the maximum power compared to the first power, the power of the fan can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0038] Figure 1 is a flow chart of a fan power control method provided by an embodiment of the present invention;

[0039] Figure 2 is a schematic diagram of a three-dimensional preset table provided in an embodiment of the present invention;

[0040] Figure 3 is a flow chart of a calibration process of a three-dimensional preset table provided in an embodiment of the present invention;

[0041] Figure 4 1 is a schematic structural diagram of a fan power control device provided by an embodiment of the present invention;

[0042] Figure 5 is a schematic diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In the following description, specific details such as particular system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clear, specific embodiments will be described below with reference to the accompanying drawings.

[0045] Figure 1 A flow chart of a fan power control method according to an embodiment of the present invention is described in detail as follows:

[0046] Step 101 : When the vehicle is in a running state, determine a first power corresponding to an air-conditioning on request and a second power corresponding to a fan on request.

[0047] Fan temperature regulation relies primarily on the cooling power of the compressor and the heat dissipation of the fan in the motor circuit. When the user presses the air conditioner (AC) button on the vehicle control panel, an AC request is triggered, turning on the vehicle's compressor for cooling. An exhaust fan is also installed in the motor circuit. This fan rotates to dissipate the cold air generated by the compressor or the hot air generated in the motor circuit, achieving temperature regulation in the vehicle.

[0048] During vehicle operation, the vehicle's thermal management system, including the engine cooling system, electric drive unit, power electronics module / electronic drive unit, and battery, generates a significant amount of heat. Therefore, heat dissipation is required throughout the vehicle to ensure proper operation. During operation, the motor circuit is in operation, so the fan within the motor circuit is always on. The fan power is controlled in conjunction with whether the air conditioning system is on or off.

[0049] The first and second in the first power and the second power are not for sorting, but for distinguishing the fan powers corresponding to different requests.

[0050] The second power is determined based on the ambient temperature and the coolant temperature. The lower the absolute value of the coolant temperature change rate corresponding to the coolant temperature, and the lower the difference between the ambient temperature and the coolant temperature is within a preset range, the smaller the second power is. The coolant temperature change rate corresponding to the coolant temperature here represents the coolant temperature change rate calculated based on the current coolant temperature and the coolant temperature measured again after setting the fan power to the second power preset time. For details, please refer to the process of determining the second power corresponding to the fan on request. The lower the absolute value of the coolant temperature change rate, and the ambient temperature is not high, the smaller the second power can be set. In the existing strategy, the fan power is directly determined based on the coolant temperature. When the coolant temperature is high, in order to quickly cool down, the fan power is set high without considering the ambient temperature. When both the ambient temperature and the coolant temperature are high, it means that the increase in the coolant temperature is not caused by the large amount of heat generated in the motor circuit. At this time, using a higher fan power for cooling can easily cause the motor circuit to cool down unsatisfactorily, or cause the motor circuit temperature to be low, affecting vehicle operation.

[0051] In one embodiment, the process of determining the second power corresponding to the fan-on request may include:

[0052] The coolant temperature and the ambient temperature of the vehicle are obtained, and a second power corresponding to the fan on request is determined according to the coolant temperature and the ambient temperature.

[0053] Preferably, according to the coolant temperature and the ambient temperature, a three-dimensional preset table is queried to determine the second power corresponding to the fan start request.

[0054] Here, the three-dimensional preset table is a pre-calibrated table. The second power corresponding to the coolant temperature and the ambient temperature is determined by looking up the table, which is convenient and fast and can improve the efficiency of determining the second power.

[0055] The three-dimensional preset table includes the corresponding relationship between coolant temperature, ambient temperature, coolant temperature change rate, target temperature change rate and fan power. Among them, the coolant temperature and ambient temperature can be temperature ranges, such as Figure 2 As shown, the coolant temperature is divided into 6 ranges, namely (20, 30), (30, 40), (40, 50), (50, 60), (60, 70), and (70, above 70). The ambient temperature can also be divided into multiple ranges, such as (10, 20), (20, 25), (25, 30), (30, 35), and (35, 40). The unit of the above temperature values ​​is ° C. It should be noted that the above temperature range division is only a schematic illustration, and other division methods can also be used, which is not limited in this embodiment.

[0056] See also Figure 2In the three-dimensional preset table, each ambient temperature range and each coolant temperature range uniquely corresponds to a set of data. This set of data includes three numbers: the current temperature rise rate of change R, the target temperature rise rate of change R', and the fan power K. Figure 3 As shown in the figure, the calibration process of the three-dimensional preset table is described in detail as follows:

[0057] Get the current vehicle's first coolant temperature and current ambient temperature, and set the initial fan power;

[0058] After the fan runs for a preset time, the coolant temperature changes, the second coolant temperature is measured again, and the corresponding coolant temperature change rate is calculated based on the second coolant temperature and the last measured first coolant temperature;

[0059] detecting whether a difference between a coolant temperature change rate and a target coolant temperature change rate is within a preset range;

[0060] When the difference between the coolant temperature change rate and the target coolant temperature change rate is within a preset range, determining the initial fan power to be a second power corresponding to the first coolant temperature and the ambient temperature;

[0061] If the difference between the coolant temperature change rate and the target coolant temperature change rate is not within the preset range, it indicates that the currently used initial fan power is inappropriate. The initial fan power is modified, and subsequent steps are performed to recalibrate until the difference between the coolant temperature change rate and the target coolant temperature change rate is within the preset range. It should be noted that when recalibrating using the modified fan power, the ambient temperature and the first coolant temperature are still the temperatures set in the first step. Here, they are experimental temperatures, so they can be set. Our goal is to calibrate the second power at different ambient temperatures and different coolant temperatures.

[0062] Based on the above process of determining the correspondence between the current ambient temperature, the first coolant temperature, and the second power, the fan powers corresponding to different ambient temperatures and different coolant temperatures are determined, resulting in a three-dimensional preset table. The fan power K in the three-dimensional preset table is the second power. Based on the above method, the fan powers corresponding to different ambient temperatures and different coolant temperatures can be obtained. Thus, when controlling the fan power in this embodiment, the corresponding second power can be determined directly by looking up the table based on the obtained ambient temperature and coolant temperature. This allows for faster determination of the second power, and the obtained second power is also the most energy-efficient power at the current ambient temperature and coolant temperature.

[0063] The preset range may be a range set according to actual needs, for example, the preset range may be ±0.5, ±0.7, etc. In this embodiment, the value of the preset range is not limited.

[0064] Step 102 : Using the maximum fan power between the first power and the second power as the target fan power, and controlling the rotation of the fan using the target fan power.

[0065] To achieve the goal of quickly adjusting the temperature, the maximum fan power is selected as the target fan power. That is, when the first power is greater than the second power, the first power is determined as the target fan power. When the second power is greater than the first power, the second power is determined as the target fan power. When the second power is used as the target fan power, energy saving can also be achieved based on the analysis of the second power in step 101.

[0066] In one embodiment, when the air-conditioning system is turned on, the maximum fan power between the first power and the second power is used as the target fan power; when the air-conditioning system is not turned on, the first power is zero, and the second power can be directly used as the target fan power, and the target fan power is used to control the fan rotation.

[0067] When the air conditioning system is off, the vehicle's temperature is only controlled by the fan in the motor circuit. There's no need to determine the first and second powers. The fan is directly controlled using the second power, reducing computational complexity and improving fan power control efficiency. Furthermore, based on the above analysis, using the second power to control the temperature of various devices in the motor circuit can achieve energy savings.

[0068] Step 101 is a method for determining the target fan power when the vehicle is in a running condition. In a non-driving condition, it is sometimes necessary to turn on the fan for temperature control. In this case, the fan power is controlled in the following manner.

[0069] In one embodiment, in step 101, when the vehicle is in an operating condition, before detecting whether the air conditioning system is turned on, it may also include: detecting whether the vehicle is in an operating condition; when the vehicle is not in an operating condition, obtaining a first power corresponding to an air conditioning turn-on request; using the first power as a target fan power, and using the target fan power to control fan rotation.

[0070] It should be noted that when the vehicle is not in operating condition, the motor circuit is not working, so the second power corresponding to the fan-on request is zero. Therefore, it is only necessary to determine the target fan power based on the first power corresponding to the air-conditioning-on request. At this time, there is no need to determine the size of the first power and the second power, which can reduce the amount of calculation, improve the control efficiency of the fan power, and achieve rapid cooling.

[0071] In order to maintain the high performance of the entire vehicle and reduce the energy consumption of the vehicle, the activation sequence of the air conditioner and the fan can be controlled, and then the target fan power is determined according to the control method described in steps 101 and 102.

[0072] In one embodiment, before step 101, the method may further include: obtaining a coolant temperature change rate corresponding to the vehicle's current third coolant temperature, the coolant temperature change rate being calculated based on the third coolant temperature and a fourth coolant temperature measured at a next measurement time; and determining the order of turning on the air conditioner and the fan based on the coolant temperature change rate. The coolant temperature measurement interval may be based on a preset measurement interval, which may be set as needed, for example, to 1 minute, 3 minutes, or 5 minutes. In this embodiment, the measurement interval value is not limited.

[0073] Specifically, the order of turning on the air conditioner and the fan is determined based on the coolant temperature change rate, including: when the absolute value of the coolant temperature change rate corresponding to the coolant temperature is greater than the preset value, a fan turn-on request is sent to turn on the fan; when the fan continues to rotate for a preset time, an air conditioner turn-on request is sent to adjust the temperature.

[0074] For example, if the absolute value of the coolant temperature change rate is large, the fan can be turned on in advance, and the air conditioner can be turned on, and the temperature can be adjusted only by the fan in the motor circuit. When the coolant temperature is extremely low, the fan is turned on for temperature adjustment. At this time, the heat generated by the vehicle operation can be used for adjustment, thereby improving energy recovery and reducing energy consumption. When the coolant temperature is extremely high, the fan is turned on to dissipate heat, and the coolant temperature can be lowered by the ambient temperature. After the fan has been running for a preset time, if continuing to adjust the temperature only by the fan cannot achieve better results, a request to turn on the air conditioner is sent for further temperature adjustment.

[0075] In one embodiment, determining the order of turning on the air conditioner and the fan based on the coolant temperature change rate includes:

[0076] When the absolute value of the coolant temperature change rate corresponding to the coolant temperature is greater than the preset value, a fan-on request is sent to turn on the fan; when the fan continues to rotate for a preset time, the current fifth coolant temperature is obtained; if the current fifth coolant temperature is within the preset temperature range, an air-conditioning-on request is sent for temperature adjustment; otherwise, the fan is kept on until the current coolant temperature is within the preset temperature range, and an air-conditioning-on request is sent for temperature adjustment.

[0077] For example, in an extremely high-temperature environment, such as a hot desert, when a vehicle departs from a parking lot, the parking lot is cool, and the vehicle's coolant temperature is low, meaning the third coolant temperature is low. After leaving the parking lot, the ambient temperature suddenly rises extremely high, and the fourth coolant temperature also rises very high. At this time, the coolant temperature changes significantly, requiring the vehicle to perform temperature control in advance to prevent the large coolant temperature fluctuations from affecting vehicle operation. Since the vehicle has been running for a short time and the motor circuit generates little heat, the motor circuit fan is activated to quickly cool the coolant. Once the coolant temperature drops to a preset range, the compressor is activated for further temperature control. This not only ensures safe and reliable vehicle operation, but also improves energy utilization and reduces energy consumption.

[0078] For another example, when a vehicle is traveling from high speed to low speed, when the vehicle is traveling at high speed, the motor circuit generates a large amount of heat, and the temperature of the third coolant is higher. When the vehicle is traveling at low speed, the motor circuit generates less heat, and the temperature of the fourth coolant is lower. The coolant temperature change rate is larger, so the fan of the motor circuit can be turned on first to quickly cool the coolant temperature, recover energy consumption, and improve energy utilization. When the coolant temperature drops to the preset temperature range, the compressor is turned on for further temperature control. This can improve the energy utilization rate of the vehicle and reduce energy consumption.

[0079] The embodiments of the present invention determine different fan powers based on the vehicle's operating conditions and the activation status of the air conditioning system, allowing the vehicle's temperature to be adjusted using the determined fan power. When the air conditioning is on, the maximum of the first and second powers is used as the target fan power for temperature control, achieving rapid temperature control. When the air conditioning is off, the first power is zero, and the second power is used as the target fan power for temperature control. When the vehicle is stationary, the second power is zero, and the first power is used as the target fan power for temperature control. This eliminates the need for determining the two powers, improving fan power control efficiency. When the second power is used for temperature control, since the second power is determined based on the ambient temperature and the coolant temperature, the lower the coolant temperature change rate obtained from the coolant temperature and the last measured coolant temperature, and the difference between the ambient temperature and the coolant temperature is within a preset range, the lower the second power. In this case, the second power is lower than the power directly requested in the prior art. Therefore, when the second power is at its maximum, the fan power can be reduced. By measuring the coolant temperature, first using the fan for temperature control and then using the compressor for cooling, the vehicle's energy utilization rate can be improved and energy consumption reduced.

[0080] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0081] The following are device embodiments of the present invention. For details not fully described therein, reference may be made to the corresponding method embodiments described above.

[0082] Figure 4 A schematic diagram of the structure of a fan power control device provided by an embodiment of the present invention is shown. For ease of explanation, only the parts related to the embodiment of the present invention are shown, which are described in detail as follows:

[0083] like Figure 4 As shown, the fan power control device includes: a determination module 401 and a control module 402 .

[0084] a determination module 401 configured to obtain, when the vehicle is in an operating state, a first power corresponding to an air conditioning on request and a second power corresponding to a fan on request, wherein the second power is determined based on the ambient temperature and the coolant temperature, and the lower the absolute value of the coolant temperature change rate corresponding to the coolant temperature and the difference between the ambient temperature and the coolant temperature is within a preset range, the lower the second power;

[0085] The control module 402 is configured to use the maximum fan power between the first power and the second power as the target fan power, and control the rotation of the fan using the target fan power.

[0086] In one embodiment, the determination module 401 is further configured to obtain the coolant temperature and the ambient temperature of the vehicle;

[0087] A second power corresponding to the fan on request is determined according to the coolant temperature and the ambient temperature.

[0088] In one embodiment, the determination module 401 is further configured to query a three-dimensional preset table according to the coolant temperature and the ambient temperature to determine the second power corresponding to the fan-on request.

[0089] In one embodiment, the calibration process of the three-dimensional preset table is as follows:

[0090] Set the initial fan power at the current ambient temperature and the first coolant temperature;

[0091] After the fan runs for a preset time, the second coolant temperature is measured, and the corresponding coolant temperature change rate is calculated based on the second coolant temperature and the first coolant temperature;

[0092] When the difference between the coolant temperature change rate and the target coolant temperature change rate is within a preset range, determining the initial fan power to be the second power;

[0093] When the difference between the coolant temperature change rate and the target coolant temperature change rate is not within a preset range, resetting the fan power for calibration until the difference between the coolant temperature change rate and the target coolant temperature change rate is within the preset range;

[0094] According to the above process of determining the correspondence between the current ambient temperature, the first coolant temperature and the second power, the fan powers corresponding to different ambient temperatures and different coolant temperatures are determined to obtain a three-dimensional preset table.

[0095] In one embodiment, when the vehicle is in an operating condition, before the determination module 401 determines the first power corresponding to the air-conditioning start request and the second power corresponding to the fan start request, the determination module 401 is further used to obtain the coolant temperature change rate corresponding to the vehicle's current third coolant temperature, and the coolant temperature change rate is calculated based on the third coolant temperature and the fourth coolant temperature measured at the next measurement moment; the control module 402 is further used to determine the order of turning on the air-conditioning and turning on the fan based on the coolant temperature change rate.

[0096] In one embodiment, when the control module 402 determines the order of turning on the air conditioner and the fan based on the coolant temperature change rate, it is configured to:

[0097] When the absolute value of the coolant temperature change rate corresponding to the coolant temperature is greater than a preset value, a fan start request is sent to turn on the fan;

[0098] When the fan continues to run for a preset time, an air conditioning start request is sent to adjust the temperature.

[0099] In one embodiment, when the control module 402 determines the order of turning on the air conditioner and the fan based on the coolant temperature, it is configured to: when the absolute value of the coolant temperature change rate corresponding to the coolant temperature is greater than a preset value, send a fan turn-on request to turn on the fan;

[0100] When the fan continues to rotate for a preset time, the current fifth coolant temperature is obtained;

[0101] If the fifth coolant temperature is within the preset temperature range, sending an air conditioning start request to adjust the temperature;

[0102] Otherwise, the fan is kept on until the current coolant temperature is within the preset temperature range, and then an air conditioning on request is sent to adjust the temperature.

[0103] The fan power control device described above uses a determination module to determine different fan powers based on different vehicle operating conditions and the activation status of the air conditioning system, so that the control module uses the determined fan power to adjust the vehicle temperature. When the air conditioning is on, the maximum of the first and second powers is used as the target fan power for temperature control, thereby achieving rapid temperature control. When the air conditioning is not on, the first power is zero, and the second power is used as the target fan power for temperature control. When the vehicle is stationary, the second power is zero, and the first power is used as the target fan power for temperature control. This eliminates the need for determining the two powers, thereby improving fan power control efficiency. When the second power is used for temperature control, since the second power is determined based on the ambient temperature and the coolant temperature, the lower the coolant temperature change rate obtained from the coolant temperature and the last measured coolant temperature, and the difference between the ambient temperature and the coolant temperature is within a preset range, the lower the second power. In this case, the second power is smaller than the power directly based on the request in the prior art. Therefore, when the second power is at the maximum power compared to the first power, the fan power can be reduced. By measuring the temperature of the coolant, first using a fan to control the temperature, and then using a compressor to cool it down, the vehicle's energy utilization rate can be improved and energy consumption can be reduced.

[0104] An embodiment of the present invention provides a vehicle, the vehicle comprising Figure 5 The electronic equipment shown. Figure 5 As shown, the electronic device 5 of this embodiment includes: a processor 50, a memory 51, and a computer program 52 stored in the memory 51 and executable on the processor 50. When the processor 50 executes the computer program 52, the steps in the above-mentioned various fan power control method embodiments are implemented, such as Figure 1 Alternatively, when the processor 50 executes the computer program 52, the functions of the modules / units in the above-mentioned device embodiments are realized, for example Figure 4 Functionality of modules / units 401 to 402 shown.

[0105] For example, the computer program 52 may be divided into one or more modules / units, one or more modules / units being stored in the memory 51 and executed by the processor 50 to implement the present invention. One or more modules / units may be a series of computer program instruction segments capable of implementing specific functions, and the instruction segments are used to describe the execution process of the computer program 52 in the electronic device 5. For example, the computer program 52 may be divided into Figure 4 Modules / units 401 to 402 are shown.

[0106] The electronic device 5 may include, but is not limited to, a processor 50 and a memory 51. Those skilled in the art will appreciate that Figure 5It is only an example of the electronic device 5 and does not constitute a limitation of the electronic device 5. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device may also include input and output devices, network access devices, buses, etc.

[0107] The processor 50 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. The general-purpose processor may be a microprocessor or any conventional processor.

[0108] The memory 51 can be an internal storage unit of the electronic device 5, such as the hard drive or memory of the electronic device 5. The memory 51 can also be an external storage device of the electronic device 5, such as a plug-in hard drive, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card, etc. equipped on the electronic device 5. Furthermore, the memory 51 can include both the internal storage unit of the electronic device 5 and an external storage device. The memory 51 is used to store computer programs and other programs and data required by the electronic device. The memory 51 can also be used to temporarily store data that has been output or is about to be output.

[0109] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device 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 into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into 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, and will not be repeated here.

[0110] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0111] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0112] In the embodiments provided by the present invention, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. For example, the device / electronic device embodiments described above are merely schematic. For example, the division of modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0113] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0114] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0115] If the integrated module / unit is implemented as 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 invention can implement all or part of the process steps in the above-mentioned method embodiments by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When executed by a processor, the computer program can implement the steps of each of the above-mentioned fan power control method embodiments. The computer program includes computer program code, which can be in source code form, object code form, executable file, or some intermediate form. Computer-readable media can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, mobile hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunications signals, and software distribution media. It should be noted that the content included in the computer-readable medium can be appropriately increased or decreased based on the requirements of legislation and patent practice in a jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunications signals.

[0116] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A method for controlling fan power, characterized in that: include: Determine the order of turning on the air conditioner and the fan based on the vehicle's coolant temperature change rate; And according to the sequence, send the air conditioner on request and the fan on request; When the vehicle is in an operating condition, determining a first power corresponding to an air conditioning on request and a second power corresponding to a fan on request, wherein the second power is determined based on an ambient temperature and a coolant temperature, and the lower the absolute value of the coolant temperature change rate corresponding to the coolant temperature and the difference between the ambient temperature and the coolant temperature is within a preset range, the lower the second power; The maximum fan power between the first power and the second power is used as the target fan power, and the fan rotation is controlled by using the target fan power.

2. The fan power control method according to claim 1, characterized in that: Determining a second power corresponding to the fan on request includes: Get the vehicle's coolant temperature and ambient temperature; A second power corresponding to the fan-on request is determined according to the coolant temperature and the ambient temperature.

3. The fan power control method according to claim 2, characterized in that: The determining, according to the coolant temperature and the ambient temperature, a second power corresponding to the fan start request includes: According to the coolant temperature and the ambient temperature, a three-dimensional preset table is queried to determine a second power corresponding to the fan start request.

4. The fan power control method according to claim 3, characterized in that: The calibration process of the three-dimensional preset table is as follows: Set the initial fan power at the current ambient temperature and the first coolant temperature; After the fan runs for a preset time, the second coolant temperature is measured, and a corresponding coolant temperature change rate is calculated based on the second coolant temperature and the first coolant temperature; When a difference between the coolant temperature change rate and the target coolant temperature change rate is within a preset range, determining the initial fan power to be the second power; When the difference between the coolant temperature change rate and the target coolant temperature change rate is not within a preset range, resetting the fan power for calibration until the difference between the coolant temperature change rate and the target coolant temperature change rate is within the preset range; According to the above process of determining the correspondence between the current ambient temperature, the first coolant temperature and the second power, the fan powers corresponding to different ambient temperatures and different coolant temperatures are determined to obtain a three-dimensional preset table.

5. The fan power control method according to any one of claims 1 to 4, characterized in that: Determine the order of turning on the air conditioner and the fan based on the vehicle's coolant temperature change rate; And according to the sequence, sending the air conditioner on request and the fan on request includes: Obtaining a coolant temperature change rate corresponding to a current third coolant temperature of the vehicle, the coolant temperature change rate being calculated based on the third coolant temperature and a fourth coolant temperature measured at a next measurement moment; The order of turning on the air conditioner and the fan is determined according to the coolant temperature change rate corresponding to the third coolant temperature; and the air conditioner turning on request and the fan turning on request are sent according to the order.

6. The fan power control method according to claim 5, characterized in that: determining the order of turning on the air conditioner and the fan according to the coolant temperature change rate corresponding to the third coolant temperature; And according to the sequence, sending the air conditioner on request and the fan on request includes: When the absolute value of the coolant temperature change rate corresponding to the coolant temperature is greater than a preset value, sending the fan start request to turn on the fan; When the fan rotates continuously for a preset time, the air conditioner start request is sent to adjust the temperature.

7. The fan power control method according to claim 5, characterized in that: determining the order of turning on the air conditioner and the fan according to the coolant temperature change rate corresponding to the third coolant temperature; And according to the sequence, sending the air conditioner on request and the fan on request includes: When the absolute value of the coolant temperature change rate corresponding to the coolant temperature is greater than a preset value, sending the fan start request to turn on the fan; After the fan continues to rotate for a preset time, obtaining the current fifth coolant temperature; If the fifth coolant temperature is within a preset temperature range, sending the air-conditioning start request to adjust the temperature; Otherwise, the fan is kept on until the current coolant temperature is within a preset temperature range, and then the air conditioner on request is sent to adjust the temperature.

8. A fan power control device, characterized in that: include: A determination module, used to determine the order of turning on the air conditioner and the fan according to the vehicle's coolant temperature change rate; And according to the sequence, send the air conditioner on request and the fan on request; When the vehicle is in an operating condition, determining a first power corresponding to an air conditioning on request and a second power corresponding to a fan on request, wherein the second power is determined based on an ambient temperature and a coolant temperature, and the lower the absolute value of the coolant temperature change rate corresponding to the coolant temperature and the difference between the ambient temperature and the coolant temperature is within a preset range, the lower the second power; The control module is configured to use the maximum fan power between the first power and the second power as a target fan power, and control the rotation of the fan using the target fan power.

9. A vehicle comprising an electronic device, wherein the electronic device comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the fan power control method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the fan power control method according to any one of claims 1 to 7 are implemented.

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