Method, device, equipment and storage medium for obtaining outlet temperature of heating core

Abstract

The present invention provides a method for obtaining the outlet air temperature of a warm air core, and relates to the field of automobile heat pump air conditioning systems. The method includes obtaining the outlet air temperature influencing factor data of a target indoor heat exchanger, obtaining the corresponding target indoor heat exchanger correction factor value; correcting the target indoor heat exchanger outlet air temperature correction benchmark by the indoor heat exchanger correction factor, and obtaining the predicted outlet air temperature of the target indoor heat exchanger; obtaining the target warm air core influencing factor data, and obtaining the corresponding target warm air core correction factor value; selecting the warm air core correction factor to correct the target warm air core outlet air temperature correction benchmark, and obtaining the predicted outlet air temperature of the target warm air core. The present application does not require the arrangement of sensors in the limited space of a heat pump air conditioning box, thus saving the cost of the entire vehicle, and predicts the average temperature of each area behind the warm air core, which can reflect the actual temperature load behind the warm air core.

Description

Technical Field

[0001] The invention relates to the field of automobile heat pump air conditioning systems, and in particular to a method, device, equipment and storage medium for obtaining the outlet temperature of a warm air core. Background Art

[0002] With the development of new energy vehicle technology, the number of electric vehicles is increasing. Electric vehicle owners always have more or less range anxiety, especially in the winter in the north. When the weather is cold, the battery decay is more serious and the range will be greatly reduced. In winter, air conditioning and heating will consume a lot of electricity, which aggravates the reduction of range.

[0003] Fuel vehicles use the residual heat of the engine coolant to heat the vehicle, and although some power is consumed by air conditioning, the proportion is very small and can be almost ignored. Electric vehicles do not have engines for heating, and if they simply use the heat source component PTC (Positive Temperature Coefficient) for heating, it will consume too much energy. Therefore, with the advancement of technology, heat pump air conditioners are gradually being applied to cars.

[0004] At present, the heat pump system in the industry mainly realizes the closed-loop control of the passenger compartment heating function by arranging a temperature sensor behind the heater core. However, the space for arranging the direct heat pump system in the air conditioning box is limited, and the arrangement of the temperature sensor also has corresponding space and structural requirements, which increases the development cost of the air conditioning system. In addition, the measurement range of this temperature sensor is only the temperature of a certain point of the heater core outlet, and it cannot really reflect the actual average outlet temperature. Summary of the invention

[0005] In view of the above shortcomings of the prior art, the present invention provides a method for obtaining the outlet temperature of a warm air core to improve the technical problems that the existing arrangement of temperature sensors increases the development cost of the heat pump air conditioning system and the temperature sensors cannot reflect the actual average outlet temperature.

[0006] To achieve the above-mentioned purpose and other related purposes, the present invention provides a method for obtaining the outlet air temperature of a heater core, comprising: obtaining the outlet air temperature influencing factor data of a target indoor heat exchanger, inputting the outlet air temperature influencing factor data of the target indoor heat exchanger into an indoor heat exchanger correction factor database, and obtaining the corresponding target indoor heat exchanger correction factor value;

[0007] Combined with the working state of the target indoor heat exchanger, the target indoor heat exchanger outlet air temperature correction benchmark is corrected by the indoor heat exchanger correction factor to obtain the predicted outlet air temperature of the target indoor heat exchanger;

[0008] Obtaining target heater core influence factor data, wherein the target heater core influence factor data includes a predicted outlet air temperature of a target indoor heat exchanger, inputting the target heater core influence factor data into a heater core correction factor database, and obtaining a corresponding target heater core correction factor value;

[0009] Combined with the target heater core working state, a heater core correction factor is selected to correct the target heater core outlet air temperature correction benchmark to obtain the predicted outlet air temperature of the target heater core.

[0010] In one embodiment of the present application, obtaining the indoor heat exchanger correction factor database includes: acquiring indoor heat exchanger sample data, the indoor heat exchanger sample data including measured data of indoor heat exchanger outlet air temperature influencing factors and corresponding measured data of indoor heat exchanger outlet air temperature under different working conditions; obtaining an indoor heat exchanger outlet air temperature influencing factor group based on the measured data of indoor heat exchanger outlet air temperature influencing factors and the corresponding measured data of indoor heat exchanger outlet air temperature in combination with the relationship between indoor heat exchanger outlet air temperature influencing factors; establishing an indoor heat exchanger correction factor database corresponding to the indoor heat exchanger outlet air temperature influencing factor group based on the measured data of the indoor heat exchanger outlet air temperature influencing factor group and the measured data of the indoor heat exchanger outlet air temperature.

[0011] In one embodiment of the present application, the indoor heat exchanger outlet air temperature influencing factors include evaporator outlet air temperature, refrigerant saturation temperature, blower air volume, indoor heat exchanger outlet subcooling, compressor speed, and the indoor heat exchanger correction factor includes α 1 , α 2 , α 3 , α 4 , α 5 , where α 1 is the indoor heat exchanger correction factor determined by the evaporator outlet air temperature data and the indoor heat exchanger outlet subcooling data; α 2 is the indoor heat exchanger correction factor determined by the indoor heat exchanger outlet subcooling data and the blower air volume data; α 3 is the indoor heat exchanger correction factor determined by the evaporator outlet air temperature data and the blower air volume data; α 4 is the indoor heat exchanger correction factor determined by the indoor heat exchanger outlet subcooling and the evaporator outlet air temperature; α 5 is the indoor heat exchanger correction factor determined by the indoor heat exchanger outlet subcooling and the compressor speed.

[0012] In one embodiment of the present application, in combination with the working state of the target indoor heat exchanger, the correction reference of the target indoor heat exchanger outlet air temperature is corrected by the indoor heat exchanger correction factor to obtain the predicted temperature of the target indoor heat exchanger outlet air temperature, including: when the target indoor heat exchanger is not working, HPH出风 =T蒸发器出风 Obtain the predicted outlet air temperature of the target indoor heat exchanger; when the target indoor heat exchanger is working, the refrigerant saturation temperature is used as the target indoor heat exchanger outlet air temperature correction reference, through T HPH出风 =(T 冷媒饱和 +α 1 +α 2 +α 3 )*α 4 *α 5 Obtain the predicted outlet air temperature of the target indoor heat exchanger; wherein, T HPH出风 is the predicted outlet air temperature of the indoor heat exchanger, T 蒸发器出风 is the evaporator outlet air temperature, T 冷媒饱和 is the refrigerant saturation temperature.

[0013] In one embodiment of the present application, the establishment of the heater core correction factor database includes: obtaining heater core sample data, the heater core sample data including measured data of the heater core influencing factor under different working conditions and the corresponding measured data of the heater core outlet air temperature; establishing a heater core correction factor database according to the measured data of the heater core influencing factor under different working conditions and the corresponding measured data of the heater core outlet air temperature.

[0014] In one embodiment of the present application, the heater core influencing factor also includes the heater circuit flow rate and the blower air volume, and the heater core correction factor β 1 , β 2 , β 3 , where β 1 is the correction factor of the heater core determined by the flow rate of the heater circuit; β 2 is the heater core correction factor determined by the blower air volume; β 3 It is the heater core correction factor determined by the indoor heat exchanger outlet air temperature.

[0015] In one embodiment of the present application, in combination with the target working state of the warm air core, an appropriate number of warm air core correction factors are selected to correct the target warm air core outlet temperature correction reference to obtain the target warm air core outlet temperature prediction temperature, including: when the warm air core is not working, through T HEX出风 =T HPH出风 Obtain the predicted outlet air temperature of the heater core; when the heater core is working, HEX出风 =T 暖风回路冷却液 +β 1 +β 2 +β 3 Obtain the predicted outlet air temperature of the heater core; wherein T HEX出风 is the predicted outlet air temperature of the heater core, T 暖风回路冷却液 It is the coolant temperature of the heating circuit.

[0016] The present application also provides a heater core outlet air temperature prediction device, comprising: an acquisition module, which acquires target indoor heat exchanger outlet air temperature influencing factor data and target heater core outlet air temperature influencing factor data; a data processing module, which combines the target indoor heat exchanger operating condition and the target heater core operating condition, and obtains the predicted outlet air temperature of the target heater core according to the target indoor heat exchanger outlet air temperature influencing factor data and the target heater core outlet air temperature influencing factor data.

[0017] The present application also provides an electronic device comprising: one or more processors; a storage device for storing one or more programs, and when the one or more programs are executed by the one or more processors, the electronic device implements the method for obtaining the air outlet temperature of the heater core as described in any of the above items.

[0018] The present application also provides a machine-readable storage medium having machine-readable instructions stored thereon. When the machine-readable instructions are executed by one or more processors, the machine executes the method for obtaining the air outlet temperature of a heater core as described in any one of the above items.

[0019] In combination with the prior art, the beneficial effects of the present invention are:

[0020] The installation of existing temperature sensors has corresponding requirements for space and structure. The present application predicts the outlet air temperature of the warm air core by combining influencing factors, and there is no need to arrange sensors in the limited space of the heat pump air-conditioning box. On the one hand, it is convenient for the design of the heat pump air-conditioning box and saves space. On the other hand, there is no need to arrange outlet air temperature sensors, thus saving the cost of the entire vehicle.

[0021] The method of the present application predicts the average temperature of each area behind the heater core, which can reflect the actual temperature load behind the heater core, avoiding the problem of uneven temperature distribution behind the existing heater core and the inability of the temperature sensor to accurately reflect the temperature load. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, 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 creative work.

[0023] Figure 1 This is a flow chart of a method for obtaining the outlet temperature of a warm air core, exemplarily shown in the present application;

[0024] Figure 2 for Figure 1An exemplary construction flow chart of an indoor heat exchanger correction factor database in step S110 of the illustrated embodiment;

[0025] Figure 3 for Figure 1 A schematic diagram of step S120 in an exemplary embodiment is shown;

[0026] Figure 4 for Figure 1 An exemplary schematic diagram of constructing a database of heater core correction factors in step S130 of the illustrated embodiment;

[0027] Figure 5 for Figure 1 A schematic diagram of step S140 in an exemplary embodiment is shown;

[0028] Figure 6 A schematic diagram of the system structure of an electronic device suitable for implementing the embodiments of the present application is shown. DETAILED DESCRIPTION

[0029] The following is an explanation of the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the features in the following embodiments and the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific embodiments, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or according to the conditions recommended by the manufacturers.

[0030] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" etc. used in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships, without substantially changing the technical content, should also be regarded as the scope of implementation of the present invention.

[0031] Due to the low temperature in winter, the battery activity decreases, causing the actual available energy to decrease. Although the decrease in available energy is a reversible process, when the temperature rises, the available energy of the battery will naturally rise, but in the process of raising the battery temperature, a lot of energy is also consumed. At the same time, in low temperature scenarios, there is a huge demand for heating in the driver's cabin. Compared with internal combustion engine vehicles, electric vehicles do not have enough energy heat sources for passengers to use, so heating and air conditioning in winter also consumes a lot of energy. The loss of these two energies makes the power consumption of electric vehicles in winter significantly higher than in summer, which brings about mileage anxiety problems. The heat pump air conditioner is a solution to the problem of winter endurance at the vehicle thermal management level.

[0032] Although fuel vehicles also face the problem of increased driving energy consumption in winter, electric vehicles are more sensitive. This is because the heating of the passenger compartment by fuel vehicles in winter is actually a waste of waste. During the operation of fuel vehicles, 60%-70% of the energy is wasted in the form of heat. When the power system quickly heats up to the optimal operating temperature range, a large amount of useless heat can be supplied to the passenger compartment. Only about 10% of the energy of electric vehicles will be converted into heat energy. Compared with 60%-70% of fuel vehicles, this 10% is already very little, and if heat pump air conditioning is not used, even this precious 10% cannot be used. In the absence of heat pump air conditioning, the solution is to heat through PTC.

[0033] The so-called PTC stands for Positive Temperature Coefficient. In fact, the principle is very simple, that is, electric current generates heat. PTC heaters use positive temperature coefficient materials, and the common method is to directly heat the coolant. The resistance of the positive temperature coefficient material increases as the response temperature increases, thereby limiting the current.

[0034] But even so, the ratio of the cooling (heating) amount generated in the cooling (heating) cycle of the air conditioner to the power consumed for cooling (heating) is called the heating efficiency ratio COP, and its maximum value does not exceed 1, which means that 1KW of electricity can generate at most 1KW of heat.

[0035] Heat pump air conditioners break the inherent thinking of using energy to generate heat, and let energy be the "porter" of heat, using the laws of thermodynamics to move low-temperature heat from the outside to the relatively high-temperature passenger compartment. Because heat pump air conditioners use the thermodynamic principle of evaporation absorbing heat and liquefaction releasing heat, and use low-boiling-point refrigerants to bring heat from the environment into the passenger compartment, the heat obtained by the passenger compartment is the sum of the consumed electrical energy and the absorbed low-level thermal energy, so its heating coefficient COP ((absorbed low-level thermal energy + consumed electrical energy) / consumed electrical energy) must be greater than 1. The efficiency of a heat pump can usually reach 200-400%, which greatly improves the energy conversion efficiency.

[0036] In order to achieve closed-loop control of the passenger compartment heating function of the heat pump system, the industry arranges temperature sensors behind the heater core. However, considering the limited space in the air conditioning box of the direct heat pump system and the corresponding requirements for the arrangement of temperature sensors, the development cost of the heat pump air conditioning system increases. This application predicts the outlet temperature of the heater core by combining the influencing factors, replacing the existing sensors and saving the cost of the whole vehicle.

[0037] See also Figure 1 , Figure 1 This is a flow chart of a method for obtaining the outlet temperature of a heater core shown in an exemplary embodiment of the present application. The method for obtaining the outlet temperature of a heater core shown in the embodiment of the present application can replace the outlet temperature sensor of the heater core and save the cost of the whole vehicle. The details are as follows:

[0038] Step S110, obtaining target indoor heat exchanger outlet air temperature influence factor data, inputting the target indoor heat exchanger outlet air temperature influence factor data into an indoor heat exchanger correction factor database, and obtaining a corresponding target indoor heat exchanger correction factor value.

[0039] To predict the outlet temperature of the indoor heat exchanger, it is necessary to import the target indoor heat exchanger outlet temperature influencing factor data into the pre-established indoor heat exchanger correction factor database, obtain the corresponding target indoor heat exchanger correction factor value, and then correct the correction benchmark of the target indoor heat exchanger according to the target indoor heat exchanger correction factor value. In this process, it is necessary to first establish a heater core correction factor database.

[0040] Please refer to Figure 2 , Figure 2 for Figure 1 The exemplary construction flow chart of the indoor heat exchanger correction factor database in step S110 of the embodiment shown in the figure is as follows:

[0041] Step S210, obtaining indoor heat exchanger sample data, wherein the indoor heat exchanger sample data includes measured data of indoor heat exchanger outlet air temperature influencing factors under different working conditions and corresponding measured data of indoor heat exchanger outlet air temperature.

[0042] First, according to the principle of heat pump air conditioning system, analyze which items are included in the influencing factors of indoor heat exchanger outlet air temperature, and then rank the degree of influence of indoor heat exchanger outlet air temperature according to the influencing factors of indoor heat exchanger outlet air temperature. This application exemplarily lists the influencing factors of indoor heat exchanger outlet air temperature, including evaporator outlet air temperature, refrigerant saturation temperature, blower air volume, indoor heat exchanger outlet subcooling, and compressor speed. Please understand that this application only exemplarily lists some indoor heat exchanger outlet air temperature influencing factors. In different scenarios and different working conditions, different indoor heat exchanger outlet air temperature influencing factors can be adaptively selected, and this application does not limit this.

[0043] According to the influence factor of the indoor heat exchanger outlet air temperature, corresponding sensors are arranged at corresponding positions to obtain the measured data of the influence factor of the indoor heat exchanger outlet air temperature under different working conditions and the indoor heat exchanger outlet air temperature under corresponding working conditions.

[0044] Step S220, obtaining an indoor heat exchanger outlet air temperature influencing factor group according to the indoor heat exchanger outlet air temperature influencing factor measured data and the corresponding indoor heat exchanger outlet air temperature measured data and in combination with the relationship between the indoor heat exchanger outlet air temperature influencing factors.

[0045] In addition to directly affecting the indoor heat exchanger outlet air temperature, the indoor heat exchanger outlet air temperature influencing factors also have an impact on each other. Combining the principle of the heat pump air conditioning system, the measured data of the indoor heat exchanger outlet air temperature influencing factors and the corresponding measured data of the indoor heat exchanger outlet air temperature, the indoor heat exchanger outlet air temperature influencing factors are combined to obtain an indoor heat exchanger outlet air temperature influencing factor group, and the importance of the indoor heat exchanger outlet air temperature influence is ranked according to the indoor heat exchanger outlet air temperature influencing factor group. The present application exemplarily lists some indoor heat exchanger outlet air temperature influencing factor groups, including an indoor heat exchanger group determined by evaporator outlet air temperature data and indoor heat exchanger outlet supercooling data, an indoor heat exchanger group determined by evaporator outlet air temperature data and blower air volume data, an indoor heat exchanger group determined by indoor heat exchanger outlet supercooling and evaporator outlet air temperature, and an indoor heat exchanger determined by indoor heat exchanger outlet supercooling and compressor speed.

[0046] Step S230: establishing an indoor heat exchanger correction factor database corresponding to the indoor heat exchanger outlet air temperature influence factor group according to the indoor heat exchanger outlet air temperature influence factor group measured data and the indoor heat exchanger outlet air temperature measured data.

[0047] According to the measured data of the indoor heat exchanger outlet temperature influence factor group and the measured data of the indoor heat exchanger outlet temperature, the first version of the indoor heat exchanger correction factor database is obtained, and the first version of the indoor heat exchanger correction factor database is written into the vehicle controller. Then, according to the test performance, the indoor heat exchanger correction factor database is further refined, corrected, and optimized to meet the accuracy requirements. In an exemplary embodiment of the present application, the indoor heat exchanger correction factor database establishes a table according to the indoor heat exchanger outlet temperature influence factor group, and each indoor heat exchanger outlet temperature influence factor group establishes a table. The horizontal and vertical coordinates of the table are the two influence factors in the indoor heat exchanger outlet temperature influence factor group, and the values ​​in the table are the values ​​of the indoor heat exchanger outlet temperature correction factor. When using the data, the corresponding horizontal and vertical coordinate values ​​are input to obtain the corresponding values ​​of the indoor heat exchanger outlet temperature correction factor.

[0048] Please continue to refer to Figure 1, step S120, combining the working state of the target indoor heat exchanger, correcting the target indoor heat exchanger outlet air temperature correction benchmark by the indoor heat exchanger correction factor, and obtaining the target indoor heat exchanger outlet air temperature prediction temperature.

[0049] According to the working state of the target indoor heat exchanger, the trimming benchmark of the target indoor heat exchanger outlet air temperature can be obtained, and then the indoor heat exchanger correction factor value is used to correct the target indoor heat exchanger outlet air temperature correction benchmark to obtain the target indoor heat exchanger outlet air temperature prediction temperature.

[0050] Please refer to Figure 3 , Figure 3 for Figure 1 The schematic diagram of step S120 in an exemplary embodiment is shown in detail as follows:

[0051] Step 320, determining whether the indoor heat exchanger is working;

[0052] The correction benchmark of the indoor heat exchanger outlet air temperature is determined based on whether the indoor heat exchanger is working.

[0053] Step S330, obtaining the expression for the predicted outlet air temperature of the target indoor heat exchanger:

[0054] When the indoor heat exchanger is not working, the indoor heat exchanger outlet air temperature is T HPH出风 =T 蒸发器出风 ;

[0055] When the indoor heat exchanger is working, through T HPH出风 =(T 蒸发器出风 +α 1 +α 2 +α 3 )*α 4 *α 5 Get the outlet air temperature of the indoor heat exchanger.

[0056] Among them, T HPH出风 is the predicted outlet air temperature of the indoor heat exchanger, T 蒸发器出风 is the evaporator outlet air temperature, T 冷媒饱和 is the refrigerant saturation temperature;

[0057] α 1 is the indoor heat exchanger correction factor determined by the evaporator outlet air temperature data and the indoor heat exchanger outlet subcooling degree data;

[0058] α 2 is the indoor heat exchanger correction factor determined by the indoor heat exchanger outlet subcooling data and the blower air volume data;

[0059] α 3is the indoor heat exchanger correction factor determined by the evaporator outlet air temperature data and the blower air volume data;

[0060] α 4 is the indoor heat exchanger correction factor determined by the indoor heat exchanger outlet subcooling and the evaporator outlet air temperature;

[0061] α 5 is the indoor heat exchanger correction factor determined by the indoor heat exchanger outlet subcooling and the compressor speed.

[0062] In actual applications, the indoor heat exchanger outlet air temperature influencing factor groups are sorted from high to low according to their importance on the indoor heat exchanger outlet air temperature. When correcting the target indoor heat exchanger outlet air predicted temperature, an appropriate number of indoor heat exchanger correction factors are selected according to the accuracy requirements to correct the indoor heat exchanger outlet air temperature correction benchmark. When selecting, the indoor heat exchanger outlet air temperature influencing factor groups with higher importance are given priority.

[0063] Please continue reading Figure 1 , step S130, obtaining target warm air core influence factor data, inputting the target warm air core influence factor data into a warm air core correction factor database, and obtaining a corresponding target warm air core correction factor value.

[0064] For the predicted air outlet temperature of the heater core, it is necessary to first obtain the target heater core influence factor data, which includes the predicted air outlet temperature of the target indoor heat exchanger; input the target heater core influence factor data into the heater core correction factor database to obtain the corresponding target heater core correction factor value, so as to correct the predicted air outlet temperature of the target heater core and obtain the predicted air outlet temperature of the heater core that meets the accuracy requirements.

[0065] See also Figure 4 , Figure 4 for Figure 1 An exemplary schematic diagram of constructing a database of heater core correction factors in step S130 of the illustrated embodiment is described in detail as follows:

[0066] Step S410, obtaining heater core sample data, wherein the heater core sample data includes measured data of heater core influencing factors under different working conditions and measured data of corresponding heater core outlet air temperatures.

[0067] The warm air core influencing factors are analyzed according to the principles of the heat pump air conditioning system, and corresponding sensors are arranged at corresponding positions to obtain measured data of the warm air core influencing factors and the corresponding measured data of the warm air core outlet air temperature under different working conditions. This application exemplarily lists some warm air core influencing factors, including the indoor heat exchanger outlet air temperature, the warm air circuit coolant temperature, the warm air circuit flow rate, and the blower air volume. It should be noted that the warm air core influencing factors can be selected according to actual needs, and this application does not limit them.

[0068] Step S420 , establishing a heater core correction factor database according to the measured data of the heater core influencing factors under different working conditions and the corresponding measured data of the heater core outlet air temperature.

[0069] According to the measured data of the warm air core influence factor under different working conditions and the measured data of the corresponding warm air core outlet temperature, data processing is performed to establish a warm air core correction factor database. The initial warm air core correction factor database is written to the vehicle controller, and then tested. According to the test data, the warm air core correction factor is further refined and calibrated to meet the accuracy requirements of the warm air core outlet temperature prediction. In an exemplary embodiment of the present application, in the data table in the warm air core correction factor database, the horizontal axis or the vertical axis is the value of the warm air core influence factor, and the data in the data table is the value of the corresponding warm air core correction factor.

[0070] Please continue reading Figure 1 In step S140, a suitable number of heater core correction factors are selected to correct the target heater core outlet air temperature correction reference in combination with the target heater core working state to obtain the target heater core outlet air temperature.

[0071] Combined with the working status of the target heater core, different ways to obtain the heater core outlet temperature can be determined. For details, please refer to Figure 5 , Figure 5 for Figure 1 The schematic diagram of step S140 in an exemplary embodiment is shown in detail as follows:

[0072] Step S520, determining whether the heater core is working.

[0073] The correction reference of the heater core outlet air temperature is determined according to whether the heater core is working.

[0074] Step S530, determining a method for obtaining the outlet air temperature of the heater core according to whether the heater core is working.

[0075] When the heater core is not working, HEX出风 =T HPH出风 Obtain the predicted outlet air temperature of the heater core;

[0076] When the heater core is working, theHEX出风 =T 暖风回路冷却液 +β 1 +β 2 +β 3 Get the predicted outlet temperature of the heater core, where T HEX出风 is the predicted outlet air temperature of the heater core, T 暖风回路冷却液 is the coolant temperature of the heating circuit; 1 is the correction factor of the heater core determined by the flow rate of the heater circuit; β 2 is the heater core correction factor determined by the blower air volume; β 3 It is the heater core correction factor determined by the indoor heat exchanger outlet air temperature.

[0077] According to the principle of the heat pump air conditioning system, the correction benchmark of the warm air core outlet temperature is determined, and then the correction benchmark of the warm air core outlet temperature is corrected by the warm air core correction factor to obtain the warm air core predicted outlet temperature that meets the accuracy requirements. This application trains the database of various influencing factors to ensure that the prediction accuracy meets the actual requirements.

[0078] An exemplary embodiment of the present application also provides a device for predicting the outlet air temperature of a heater core, which mainly includes a collection module, which collects the outlet air temperature influencing factor data of an indoor heat exchanger and the outlet air temperature influencing factor data of a heater core.

[0079] Data processing module: The data processing module combines the working condition of the indoor heat exchanger, that is, whether the indoor heat exchanger is working, and obtains the prediction result of the indoor heat exchanger outlet air temperature according to the correction coefficient of the indoor heat exchanger outlet air temperature influencing factor; then, according to whether the heater core is working, combined with the correction coefficient of the heater core outlet air temperature influencing factor, the prediction result of the heater core outlet air temperature is obtained from the indoor heat exchanger outlet air temperature prediction result and the data of other heater core outlet air temperature influencing factors.

[0080] An embodiment of the present application also provides an electronic device, including one or more processors and a storage device for storing one or more programs. When the one or more programs are executed by multiple processors, the electronic device implements the above-mentioned method for obtaining the air outlet temperature of the heater core.

[0081] Figure 6 A schematic diagram of the structure of a computer system suitable for implementing an electronic device of an embodiment of the present application is shown. It should be noted that: Figure 6 The computer system of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0082] like Figure 6As shown, the computer system includes a central processing unit (CPU) 601, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 602 or the program loaded from the storage part 608 to the random access memory (RAM) 603, such as executing the method described in the above embodiment. In RAM 603, various programs and data required for system operation are also stored. CPU 601, ROM 602 and RAM 603 are connected to each other through bus 604. Input / output (I / O) interface 605 is also connected to bus 604.

[0083] The following components are connected to the I / O interface 605: an input section 606; an output section 607 including a cathode ray tube (CRT), a liquid crystal display (LCD), a speaker, etc.; a storage section 608 including a hard disk, etc.; and a communication section 609 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to the I / O interface 605 as needed. A removable medium 611, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 610 as needed so that a computer program read therefrom is installed into the storage section 608 as needed.

[0084] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 609, and / or installed from a removable medium 611. When the computer program is executed by a central processing unit (CPU) 601, various functions defined in the system of the present application are executed.

[0085] It should be noted that the computer-readable medium shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, wherein a computer-readable computer program is carried. This propagated data signal can take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. A computer program contained on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0086] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0087] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.

[0088] Another aspect of the present application further provides a device-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the method for obtaining the outlet temperature of the warm air core as described above is implemented. The machine-readable storage medium may be included in the electronic device described in the above embodiment, or may exist independently without being assembled into the electronic device.

[0089] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for obtaining the outlet temperature of a heater core, characterized in that: include: Obtaining target indoor heat exchanger outlet air temperature influencing factor data, inputting the target indoor heat exchanger outlet air temperature influencing factor data into an indoor heat exchanger correction factor database, and obtaining a corresponding target indoor heat exchanger correction factor value; Combined with the working state of the target indoor heat exchanger, the target indoor heat exchanger outlet air temperature correction benchmark is corrected by the indoor heat exchanger correction factor to obtain the predicted outlet air temperature of the target indoor heat exchanger; Obtaining target heater core influence factor data, wherein the target heater core influence factor data includes a predicted outlet air temperature of a target indoor heat exchanger, inputting the target heater core influence factor data into a heater core correction factor database, and obtaining a corresponding target heater core correction factor value; Combined with the target heater core working state, a heater core correction factor is selected to correct the target heater core outlet air temperature correction benchmark to obtain the predicted outlet air temperature of the target heater core; Wherein, obtaining the indoor heat exchanger correction factor database includes: Acquire indoor heat exchanger sample data, wherein the indoor heat exchanger sample data includes measured data of indoor heat exchanger outlet air temperature influencing factors under different working conditions and corresponding measured data of indoor heat exchanger outlet air temperature; According to the measured data of the indoor heat exchanger outlet air temperature influencing factors and the corresponding indoor heat exchanger outlet air temperature measured data, combined with the relationship between the indoor heat exchanger outlet air temperature influencing factors, the indoor heat exchanger outlet air temperature influencing factor group is obtained; According to the measured data of the indoor heat exchanger outlet air temperature influence factor group and the measured data of the indoor heat exchanger outlet air temperature, an indoor heat exchanger correction factor database corresponding to the indoor heat exchanger outlet air temperature influence factor group is established; The indoor heat exchanger outlet air temperature influencing factors include evaporator outlet air temperature, refrigerant saturation temperature, blower air volume, indoor heat exchanger outlet subcooling, compressor speed, and the indoor heat exchanger correction factors include α1, α2, α3, α4, and α5, wherein: α1 is the indoor heat exchanger correction factor determined by the evaporator outlet air temperature data and the indoor heat exchanger outlet subcooling data; α2 is the indoor heat exchanger correction factor determined by the indoor heat exchanger outlet subcooling data and the blower air volume data; α3 is the indoor heat exchanger correction factor determined by the evaporator outlet air temperature data and the blower air volume data; α4 is the indoor heat exchanger correction factor determined by the indoor heat exchanger outlet subcooling and the evaporator outlet air temperature; α5 is the indoor heat exchanger correction factor determined by the indoor heat exchanger outlet subcooling and the compressor speed; Combined with the working state of the target indoor heat exchanger, the correction benchmark of the target indoor heat exchanger outlet air temperature is corrected by the indoor heat exchanger correction factor to obtain the predicted temperature of the target indoor heat exchanger outlet air temperature, including: When the target indoor heat exchanger is not working, the HPH出风 =T 蒸发器出风 Obtaining a predicted outlet air temperature of the target indoor heat exchanger; When the target indoor heat exchanger is working, the refrigerant saturation temperature is used as the target indoor heat exchanger outlet air temperature correction reference, and the target indoor heat exchanger outlet air temperature is corrected by T HPH出风 =(T 冷媒饱和 +α1+α2+α3)*α4*α5 to obtain the predicted outlet air temperature of the target indoor heat exchanger; Among them, T HPH出风 is the predicted outlet air temperature of the indoor heat exchanger, T 蒸发器出风 is the evaporator outlet air temperature, T 冷媒饱和 is the refrigerant saturation temperature.

2. The method for obtaining the outlet temperature of the heater core according to claim 1, characterized in that: The establishment of the heater core correction factor database includes: Acquire heater core sample data, wherein the heater core sample data includes measured data of heater core influencing factors under different working conditions and measured data of corresponding heater core outlet air temperatures; A heater core correction factor database is established based on measured data of heater core influencing factors under different working conditions and corresponding measured data of heater core outlet air temperatures.

3. The method for obtaining the outlet temperature of the heater core according to claim 2, characterized in that: The heating core influencing factors also include heating circuit flow, blower air volume, heating core correction factors β1, β2, β3, where: β1 is the correction factor of the heater core determined by the flow rate of the heater circuit; β2 is the heater core correction factor determined by the blower air volume; β3 is the heater core correction factor determined by the indoor heat exchanger outlet air temperature.

4. The method for obtaining the outlet temperature of the heater core according to claim 3, characterized in that: Combined with the target heater core working state, select an appropriate number of heater core correction factors to correct the target heater core outlet temperature correction benchmark to obtain the target heater core outlet temperature prediction temperature, including: When the heater core is not working, the HEX出风 =T HPH出风 Obtaining a predicted outlet air temperature of the heater core; When the heater core is working, the HEX出风 =T 暖风回路冷却液 +β1+β2+β3 to obtain the predicted outlet air temperature of the warm air core; Where T HEX出风 is the predicted outlet air temperature of the heater core, T 暖风回路冷却液 It is the coolant temperature of the heating circuit.

5. A device for predicting the outlet temperature of a heater core, characterized in that: include: A collection module, wherein the collection module collects the target indoor heat exchanger outlet air temperature influencing factor data and the target warm air core outlet air temperature influencing factor data; A data processing module, wherein the data processing module combines the target indoor heat exchanger operating condition and the target warm air core operating condition, and obtains the predicted outlet air temperature of the target warm air core according to the target indoor heat exchanger outlet air temperature influencing factor data and the target warm air core outlet air temperature influencing factor data; Among them, the acquisition of the indoor heat exchanger correction factor database includes: Acquire indoor heat exchanger sample data, wherein the indoor heat exchanger sample data includes measured data of indoor heat exchanger outlet air temperature influencing factors under different working conditions and corresponding measured data of indoor heat exchanger outlet air temperature; According to the measured data of the indoor heat exchanger outlet air temperature influencing factors and the corresponding indoor heat exchanger outlet air temperature measured data, combined with the relationship between the indoor heat exchanger outlet air temperature influencing factors, the indoor heat exchanger outlet air temperature influencing factor group is obtained; According to the measured data of the indoor heat exchanger outlet air temperature influence factor group and the measured data of the indoor heat exchanger outlet air temperature, an indoor heat exchanger correction factor database corresponding to the indoor heat exchanger outlet air temperature influence factor group is established; the indoor heat exchanger outlet air temperature influence factor includes the evaporator outlet air temperature, the refrigerant saturation temperature, the blower air volume, the indoor heat exchanger outlet subcooling, and the compressor speed; the indoor heat exchanger correction factor includes α1, α2, α3, α4, and α5, wherein, α1 is the indoor heat exchanger correction factor determined by the evaporator outlet air temperature data and the indoor heat exchanger outlet subcooling data; α2 is the indoor heat exchanger correction factor determined by the indoor heat exchanger outlet subcooling data and the blower air volume data; α3 is the indoor heat exchanger correction factor determined by the evaporator outlet air temperature data and the blower air volume data; α4 is the indoor heat exchanger correction factor determined by the indoor heat exchanger outlet subcooling and the evaporator outlet air temperature; α5 is the indoor heat exchanger correction factor determined by the indoor heat exchanger outlet subcooling and the compressor speed; combined with the target indoor heat exchanger working state, the target indoor heat exchanger outlet air temperature correction benchmark is corrected by the indoor heat exchanger correction factor to obtain the target indoor heat exchanger outlet air temperature prediction temperature, including: When the target indoor heat exchanger is not working, the HPH出风 =T 蒸发器出风 Obtaining a predicted outlet air temperature of the target indoor heat exchanger; When the target indoor heat exchanger is working, the refrigerant saturation temperature is used as the target indoor heat exchanger outlet air temperature correction reference, and the target indoor heat exchanger outlet air temperature is corrected by T HPH出风 =(T 冷媒饱和 +α1+α2+α3)*α4*α5 to obtain the predicted outlet air temperature of the target indoor heat exchanger; Among them, T HPH出风 is the predicted outlet air temperature of the indoor heat exchanger, T 蒸发器出风 is the evaporator outlet air temperature, T 冷媒饱和 is the refrigerant saturation temperature.

6. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs. When the one or more programs are executed by the one or more processors, the electronic device implements the method for obtaining the air outlet temperature of the heater core as described in any one of claims 1 to 4.

7. A machine-readable storage medium, characterized in that: Machine-readable instructions are stored thereon. When the readable instructions are executed by one or more processors, the machine executes the method for obtaining the air outlet temperature of the heater core as described in any one of claims 1 to 4.

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