Methods and devices for predicting air outlet temperature in automotive air conditioning systems, automobiles, and storage media.

Abstract

This disclosure relates to the technical field of automotive air conditioning, and discloses a method and device for predicting the outlet air temperature of an automotive air conditioner, an automobile, and a storage medium. The method includes: acquiring a first temperature influencing factor corresponding to the heater core, and predicting the outlet air temperature of the heater core based on the first temperature influencing factor; acquiring a second temperature influencing factor corresponding to the air PTC, and predicting the outlet air temperature of the air PTC based on the second temperature influencing factor and the outlet air temperature of the heater core; determining the operating mode of the air outlet, and determining a third temperature influencing factor corresponding to the air outlet based on the operating mode of the air outlet; and predicting the outlet air temperature based on the outlet air temperature of the air PTC, the operating mode of the air outlet, and the third temperature influencing factor. This method helps reduce the manufacturing cost of the air conditioner and also provides a more accurate outlet air temperature reading.

Description

Technical Field

[0001] This disclosure relates to the technical field of automotive air conditioning, such as a method and apparatus for predicting the outlet air temperature of an automotive air conditioner, an automobile, and a storage medium. Background Technology

[0002] With the rapid development of new energy vehicle technology, range-extended and plug-in hybrid electric vehicles are gradually becoming the mainstream in the market. However, in winter when temperatures are very low, battery range decreases significantly, posing a challenge to vehicle use. To address this issue, when the engine is running to drive or charge, the waste heat from the engine coolant can be used to meet the heating needs of the passenger compartment. This reduces the energy consumption of the air PTC (Positive Temperature Coefficient Thermistor), thereby reducing overall vehicle energy consumption and increasing driving range.

[0003] In related technologies, a PTC air heater is usually added after the warm air core in the air conditioning unit to meet the heating needs of the passenger compartment. At the same time, a temperature sensor is installed at the corresponding air outlet in the air conditioning unit to realize closed-loop control of the passenger compartment heating function.

[0004] However, placing temperature sensors inside the air conditioning unit requires additional space and structural design, increasing the manufacturing cost of the air conditioner. Moreover, temperature sensors can only provide the average temperature inside the air conditioning unit and cannot accurately reflect the actual temperature load in each air outlet area, resulting in less than ideal heating performance.

[0005] It is evident that the air conditioning unit in automobiles is structurally complex and costly due to the installation of temperature sensors, and the actual temperature of the air outlet area cannot be obtained using temperature sensors.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a method and apparatus for predicting the outlet air temperature of an automotive air conditioner, an automotive vehicle, and a storage medium, which helps reduce the manufacturing cost of the air conditioner and enables more accurate outlet air temperature prediction.

[0009] According to a first aspect of this disclosure, a method for predicting the outlet air temperature of an automotive air conditioner is provided, characterized in that it includes:

[0010] Obtain the first temperature influencing factor corresponding to the heater core, and predict the outlet air temperature of the heater core based on the first temperature influencing factor.

[0011] Obtain the second temperature influencing factor corresponding to the air PTC, and predict the air outlet temperature of the air PTC based on the second temperature influencing factor and the outlet temperature of the warm air core.

[0012] Determine the working mode of the air outlet, and based on the working mode of the air outlet, determine the third temperature influencing factor corresponding to the air outlet.

[0013] Based on the air outlet temperature of the PTC, the operating mode of the air outlet, and the third temperature influencing factor, the air outlet temperature is predicted.

[0014] In some embodiments, the first temperature influencing factors include the working state of the heater core, the evaporator outlet temperature, and the engine coolant temperature.

[0015] Predicting the outlet air temperature of the heater core based on the first temperature influencing factor includes:

[0016] When the heating core is not in operation, the evaporator outlet temperature is taken as the outlet temperature of the heating core.

[0017] When the heater core is in operation, the outlet temperature of the heater core is predicted based on the evaporator outlet temperature and engine coolant temperature.

[0018] In some embodiments, predicting the outlet temperature of the heater core based on the evaporator outlet temperature and engine coolant temperature includes:

[0019] Calculate the target temperature and the temperature difference between the engine coolant temperature and the evaporator outlet air temperature;

[0020] The sum of the target temperature and the difference with the evaporator outlet air temperature is taken as the outlet air temperature of the warm air core.

[0021] In some embodiments, the first temperature influencing factors also include ambient temperature, engine thermostat opening, engine water pump speed, heater core flow rate, and heater core air volume.

[0022] Calculate the target temperature and the temperature difference between the engine coolant temperature and the evaporator outlet air temperature, including:

[0023] The first adjustment coefficient corresponding to the heater core is determined based on the engine coolant temperature, the target ambient temperature, and the engine thermostat opening.

[0024] The heat exchange efficiency coefficient of the heater core is determined based on the engine water pump speed, heater core flow rate, and heater core air volume.

[0025] Based on the first adjustment coefficient corresponding to the heater core, the heat exchange efficiency coefficient of the heater core, the engine water temperature and the evaporator outlet air temperature, calculate the target temperature and the temperature difference between the engine water temperature and the evaporator outlet air temperature.

[0026] In some embodiments, the second temperature influencing factor includes the operating status of the air PTC and the blower's warm air volume;

[0027] Based on the second temperature influencing factor and the outlet air temperature of the warm air core, the outlet air temperature of the air PTC is predicted, including:

[0028] When the air PTC is not in operation, the outlet temperature of the warm air core is taken as the outlet temperature of the air PTC.

[0029] When the air PTC is in operation, the air outlet temperature is predicted based on the blower's warm air volume and the outlet temperature of the warm air core.

[0030] In some embodiments, predicting the outlet temperature of the air PTC based on the blower's warm air volume and the outlet temperature of the warm air core includes:

[0031] Determine the actual power of the air PTC and calculate the heat capacity flow rate based on the blower's warm air volume and the specific heat capacity of the air.

[0032] The ratio of the actual power of the air PTC to the heat capacity flow rate is used as the incremental temperature.

[0033] The sum of the incremental temperature and the outlet temperature of the warm air core is used as the outlet temperature of the air PTC.

[0034] In some embodiments, the ratio of the actual power of the air PTC to the heat capacity flow rate is used as the incremental temperature, including:

[0035] The second adjustment coefficient corresponding to the air PTC is determined based on the blower's warm air volume.

[0036] The ratio of the actual power of the air PTC to the heat capacity flow rate is used as the reference temperature.

[0037] The incremental temperature is determined based on the reference target temperature and the second adjustment coefficient corresponding to the air PTC.

[0038] In some embodiments, the number of air outlet types is 2, and the working modes of the air outlets include blowing mode and defrosting mode;

[0039] Determine the operating mode of the air outlet, and based on the operating mode of the air outlet, determine the corresponding third temperature influencing factor, including:

[0040] When one air outlet is in defrost mode and the other air outlet is in blowing mode, the third temperature influencing factor for the air outlet includes the vehicle interior temperature and the evaporator outlet temperature.

[0041] When both air outlets are in blowing mode, the third temperature influencing factor for the air outlet includes the evaporator outlet temperature.

[0042] In some embodiments, when one air outlet is in defrost mode and the other air outlet is in blowing mode, the air outlet temperature is predicted based on the air PTC outlet temperature, the air outlet operating mode, and a third temperature influencing factor, including:

[0043] For the air outlet in defrost mode, calculate the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature, and use the target temperature sum as the outlet temperature.

[0044] For air vents in blowing mode, the interior temperature of the vehicle is used as the air outlet temperature.

[0045] In some embodiments, when both air outlets are in blowing mode, the air outlet temperature is predicted based on the air PTC outlet temperature, the outlet operating mode, and a third temperature influencing factor, including:

[0046] For the air outlet in blowing mode, calculate the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature, and use the target temperature sum as the outlet temperature.

[0047] In some embodiments, the third temperature influencing factor includes the mixing damper ratio coefficient, the blower warm air volume, and the blower total air volume;

[0048] The target temperature for calculating the evaporator outlet air temperature and the PTC outlet air temperature includes:

[0049] The weighting coefficient for the evaporator outlet air temperature PTC is determined based on the mixing damper ratio coefficient, and the third adjustment coefficient is determined based on the vehicle interior temperature, the blower's warm air volume, and the blower's total air volume.

[0050] Based on the evaporator outlet temperature, the air PTC outlet temperature, and the corresponding weighting coefficients, calculate the weighted average temperature of the evaporator outlet temperature and the air PTC outlet temperature.

[0051] Based on the weighted average temperature and the third adjustment coefficient, the target temperature of the air outlet temperature PTC of the evaporator is calculated.

[0052] According to a second aspect of this disclosure, an outlet air temperature prediction device for an automotive air conditioner is provided, comprising:

[0053] The core temperature prediction module is configured to obtain the first temperature influencing factor corresponding to the warm air core, and predict the outlet air temperature of the warm air core based on the first temperature influencing factor.

[0054] The PTC temperature prediction module is configured to acquire the second temperature influencing factor corresponding to the air PTC, and predict the air outlet temperature of the air PTC based on the second temperature influencing factor and the outlet temperature of the warm air core.

[0055] The air outlet parameter determination module is configured to determine the working mode of the air outlet and determine the third temperature influencing factor corresponding to the air outlet based on the working mode of the air outlet.

[0056] The outlet temperature prediction module is configured to predict the outlet temperature based on the outlet temperature of the air PTC, the outlet working mode, and a third temperature influencing factor.

[0057] According to a third aspect of this disclosure, an outlet air temperature prediction device for an automotive air conditioner is provided, including a processor and a memory storing program instructions, wherein the processor is configured to execute the outlet air temperature prediction method for an automotive air conditioner provided in the first aspect of this disclosure when running the program instructions.

[0058] According to a fourth aspect of this disclosure, an automobile is provided, characterized in that it includes an air outlet temperature prediction device for an automobile air conditioner provided in the second or third aspect of this disclosure.

[0059] According to a fifth aspect of this disclosure, a storage medium is provided that stores computer program instructions, which, when executed by a processor, perform the method for predicting the outlet air temperature of an automotive air conditioner provided in the first aspect of this disclosure.

[0060] The method and apparatus for predicting the outlet air temperature of an automotive air conditioner, the automotive itself, and the storage medium provided in this disclosure can achieve the following technical effects:

[0061] The method for predicting the outlet air temperature of an automotive air conditioner provided in this disclosure fully considers the temperature influencing factors related to the operating modes of the heater core, the air PTC, and the air outlet. Based on the corresponding temperature influencing factors, the outlet air temperature of the heater core, the outlet air temperature of the air PTC, and the outlet air temperature are determined in sequence, thereby obtaining a more accurate outlet air temperature. This method of determining the outlet air temperature does not require a dedicated temperature sensor for detecting the outlet area, simplifying the structure of the air conditioning unit and reducing manufacturing costs. The process of predicting the outlet air temperature comprehensively considers multiple dimensions of temperature influencing factors, resulting in a more accurate final outlet air temperature.

[0062] The above general description and the description below are exemplary and illustrative only and are not intended to limit this disclosure. Attached Figure Description

[0063] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0064] Figure 1 This is a flowchart illustrating a method for predicting the outlet air temperature of an automotive air conditioner according to an embodiment of this disclosure.

[0065] Figure 2 This is a flowchart illustrating another method for predicting the outlet air temperature of an automotive air conditioner provided in this embodiment of the present disclosure.

[0066] Figure 3 This is a flowchart illustrating another method for predicting the outlet air temperature of an automotive air conditioner provided in this embodiment of the present disclosure.

[0067] Figure 4 This is a flowchart illustrating another method for predicting the outlet air temperature of an automotive air conditioner provided in this embodiment of the present disclosure.

[0068] Figure 5 This is a flowchart illustrating another method for predicting the outlet air temperature of an automotive air conditioner provided in this embodiment of the present disclosure.

[0069] Figure 6 This is a schematic diagram of the structure of an air outlet temperature prediction device for an automotive air conditioner provided in an embodiment of this disclosure;

[0070] Figure 7 This is a schematic diagram of another automotive air conditioning outlet temperature prediction device provided in this embodiment. Detailed Implementation

[0071] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0072] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0073] Unless otherwise stated, the term "multiple" means two or more.

[0074] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0075] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0076] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0077] This disclosure provides an embodiment of a vehicle, which is a range-extended electric vehicle or a plug-in hybrid electric vehicle. The vehicle has an engine, a cooling system, and an air conditioning system, wherein the air conditioning system includes at least an air conditioning unit, a heater core, an air PTC, and an evaporator, the heater core, the air PTC, and the evaporator are all installed in the air conditioning unit, and the heater core and the air PTC are connected in parallel.

[0078] Cars can utilize the waste heat from the engine coolant to heat the passenger compartment. In range-extended electric vehicles, the engine is primarily used to generate electricity, while in plug-in hybrid electric vehicles, the engine can directly drive the vehicle or charge the battery when necessary. The engine generates a significant amount of heat during operation, which is dissipated through the cooling system (i.e., coolant). The cooling system is responsible for removing the heat generated by the engine to maintain it within a suitable operating temperature range. After circulating within the engine, the coolant is pumped to the heater core for heating the passenger compartment.

[0079] The heater core is a heat exchanger that transfers heat from the engine to the air in the passenger compartment through heat exchange between the coolant and the air. The heater core is connected to the cooling system's circulation loop and receives the high-temperature coolant from the engine. When the driver or passengers require heating, a blower blows air through the heater core, heating the air before it is delivered into the passenger compartment. When the engine is not running or the coolant temperature is insufficient to provide adequate heat, the air PTC can serve as a backup heat source to provide heat to the passenger compartment. When the heat provided by the heater core is insufficient, the control system activates the air PTC to provide additional heat to the passenger compartment via electric heating.

[0080] The air conditioning unit is equipped with air outlets through which heated or cooled air flows into the passenger compartment. There are two types of air outlets: face-blowing outlets and foot-blowing outlets. The face-blowing outlets are primarily for directing airflow towards the driver and passengers' faces, while the foot-blowing outlets are primarily for directing airflow towards the driver and passengers' feet.

[0081] This disclosure provides an air outlet temperature prediction device for an automotive air conditioner, which is installed in the aforementioned automotive vehicle. The air outlet temperature prediction device can acquire the temperature influencing factors of the heater core and the air PTC, as well as the operating mode of the air outlet and its corresponding temperature influencing factors, and predict the air outlet temperature based on the acquired data.

[0082] In conjunction with the automotive air conditioning outlet temperature prediction device provided in this disclosure embodiment, this disclosure embodiment provides an automotive air conditioning outlet temperature prediction method, wherein the executing entity of the outlet temperature prediction method is the outlet temperature prediction device (hereinafter referred to as the device), such as Figure 1 As shown, the methods for predicting the outlet air temperature of automotive air conditioning include:

[0083] S101, the device acquires the first temperature influencing factor corresponding to the warm air core, and predicts the outlet air temperature of the warm air core based on the first temperature influencing factor.

[0084] In this embodiment of the disclosure, the factors that can affect the outlet air temperature of the heater core are defined as the first temperature influencing factor. Optionally, the first temperature influencing factor includes the operating state of the heater core, the evaporator outlet air temperature, and the engine coolant temperature. Optionally, the first temperature influencing factor also includes the ambient temperature, the engine thermostat opening, the engine water pump speed, the heater core flow rate, and the heater core warm air volume.

[0085] S102, the device acquires the second temperature influencing factor corresponding to the air PTC, and predicts the air outlet temperature of the air PTC based on the second temperature influencing factor and the outlet temperature of the warm air core.

[0086] In this embodiment of the disclosure, the factors that can affect the outlet air temperature of the air PTC are defined as the second temperature influencing factor. Optionally, the second temperature influencing factor includes the operating state of the air PTC and the blower's warm air volume.

[0087] S103, the device determines the working mode of the air outlet and determines the third temperature influencing factor corresponding to the air outlet based on the working mode of the air outlet.

[0088] In this embodiment, the number of air outlet types is two, and the operating modes of the air outlets include a blowing mode and a defrosting mode. Optionally, the two types of air outlets are a face air outlet and a foot air outlet, and the number of each type of air outlet can be determined according to actual design needs.

[0089] In this embodiment of the disclosure, the factors that can affect the outlet air temperature are defined as the third temperature influencing factor. Here, the operating mode of each type of air outlet can be comprehensively considered to determine the third temperature influencing factor corresponding to each type of air outlet. Optionally, the third temperature influencing factor includes the vehicle interior temperature and the evaporator outlet air temperature. Optionally, the third temperature influencing factor also includes the mixing damper ratio coefficient, the blower's warm air volume, and the blower's total air volume.

[0090] S104, the device predicts the outlet air temperature based on the outlet air temperature of the PTC air, the outlet air mode, and the third temperature influencing factor.

[0091] The method for predicting the outlet air temperature of an automotive air conditioner provided in this disclosure fully considers the temperature influencing factors related to the operating modes of the heater core, the air PTC, and the air outlet. Based on the corresponding temperature influencing factors, the outlet air temperature of the heater core, the outlet air temperature of the air PTC, and the outlet air temperature are determined in sequence, thereby obtaining a more accurate outlet air temperature. This method of determining the outlet air temperature does not require a dedicated temperature sensor for detecting the outlet area, simplifying the structure of the air conditioning unit and reducing manufacturing costs. The process of predicting the outlet air temperature comprehensively considers multiple dimensions of temperature influencing factors, resulting in a more accurate final outlet air temperature.

[0092] In some embodiments, the first temperature influencing factors include the operating state of the heater core, the evaporator outlet temperature, and the engine coolant temperature. Predicting the outlet temperature of the heater core based on the first temperature influencing factors includes: when the heater core is not operating, using the evaporator outlet temperature as the outlet temperature of the heater core; and when the heater core is operating, predicting the outlet temperature of the heater core based on the evaporator outlet temperature and the engine coolant temperature.

[0093] When the heater core is not operating, it does not heat the air, so the air temperature after passing through the evaporator is the final air temperature entering the passenger compartment. This avoids unnecessary calculations, directly utilizing existing data and improving prediction accuracy and efficiency. When the heater core is operating, the outlet air temperature is predicted by considering both the evaporator outlet temperature and engine coolant temperature. By combining these two key parameters, the actual outlet air temperature of the heater core can be predicted more accurately.

[0094] Combination Figure 2As shown in the embodiments of this disclosure, another method for predicting the outlet air temperature of an automotive air conditioner is provided. The method for predicting the outlet air temperature of an automotive air conditioner includes:

[0095] S201, the device acquires the first temperature influencing factor corresponding to the warm air core.

[0096] In this embodiment, the first temperature influencing factors include the operating state of the heater core, the evaporator outlet temperature, and the engine coolant temperature. The evaporator outlet temperature refers to the target temperature set in the air conditioning system, typically adjusted by the user via the air conditioning controller. The engine coolant temperature refers to the temperature of the coolant flowing through the heater core. The operating state of the heater core includes both non-operational and operational states. If the heater core is not operating, it cannot effectively transfer heat to the air, thus failing to provide sufficient warm air; if the heater core is operating, it can provide warm air of a corresponding temperature to the passenger compartment based on the coolant temperature.

[0097] S202, when the working state of the heating core is not working, the evaporator outlet air temperature is used as the outlet air temperature of the heating core.

[0098] S203, when the heater core is in working condition, the device predicts the outlet temperature of the heater core based on the evaporator outlet temperature and engine water temperature.

[0099] In this embodiment, a target temperature difference between the engine coolant temperature and the evaporator outlet air temperature can be calculated, and then the sum of the target temperature difference and the evaporator outlet air temperature can be calculated. This sum is used as the outlet air temperature of the heater core. This method can quickly respond to changes in engine coolant temperature and evaporator outlet air temperature, accurately predict the outlet air temperature of the heater core, and help improve the system's response speed and stability.

[0100] S204, the device acquires the second temperature influencing factor corresponding to the air PTC, and predicts the air outlet temperature of the air PTC based on the second temperature influencing factor and the outlet temperature of the warm air core.

[0101] S205, the device determines the working mode of the air outlet and determines the third temperature influencing factor corresponding to the air outlet based on the working mode of the air outlet.

[0102] S206, the device predicts the outlet air temperature based on the outlet air temperature of the PTC air, the outlet air operating mode, and the third temperature influencing factor.

[0103] In some embodiments, the first temperature influencing factors further include ambient temperature, engine thermostat opening, engine water pump speed, heater core flow rate, and heater core air volume. Calculating the target temperature difference between the engine coolant temperature and the evaporator outlet temperature includes: determining a first adjustment coefficient corresponding to the heater core based on the engine coolant temperature, the target ambient temperature, and the engine thermostat opening; determining the heater core heat exchange efficiency coefficient based on the engine water pump speed, heater core flow rate, and heater core air volume; and calculating the target temperature difference between the engine coolant temperature and the evaporator outlet temperature based on the first adjustment coefficient corresponding to the heater core, the heater core heat exchange efficiency coefficient, the engine coolant temperature, and the evaporator outlet temperature.

[0104] In some embodiments, based on the first adjustment coefficient corresponding to the heater core, the heat exchange efficiency coefficient of the heater core, the engine coolant temperature, and the evaporator outlet air temperature, the target temperature difference between the engine coolant temperature and the evaporator outlet air temperature is calculated, including: multiplying the first adjustment coefficient corresponding to the heater core and the engine coolant temperature as the engine corrected coolant temperature; calculating the corrected temperature difference between the engine corrected coolant temperature and the evaporator outlet air temperature; and multiplying the corrected temperature difference and the heat exchange efficiency coefficient of the heater core as the target temperature difference between the engine coolant temperature and the evaporator outlet air temperature.

[0105] In some embodiments, the first adjustment coefficient is the product of the heater core heat loss coefficient and the heater core correction coefficient. The heater core heat loss coefficient is determined by the engine coolant temperature and ambient temperature, and the heater core correction coefficient is determined by the engine thermostat opening.

[0106] In some embodiments, the heat exchange efficiency coefficient of the heater core is determined by the heater core flow rate and the heater core air volume corresponding to the engine water pump speed.

[0107] Alternatively, the outlet air temperature of the heater core can be calculated using the following formula:

[0108] T hex =(T1×ß1×ß2-T2)×η+T2.

[0109] In the above formula, T hex T1 is the outlet air temperature of the heater core, T2 is the engine coolant temperature, T2 is the evaporator outlet air temperature, and η is the heat exchange efficiency coefficient of the heater core.

[0110] In some embodiments, the second temperature influencing factor includes the operating state of the air PTC and the blower's warm air volume. Predicting the air PTC's outlet temperature based on the second temperature influencing factor and the outlet temperature of the warm air core includes: when the air PTC is not operating, using the outlet temperature of the warm air core as the air PTC's outlet temperature; and when the air PTC is operating, predicting the air PTC's outlet temperature based on the blower's warm air volume and the outlet temperature of the warm air core.

[0111] When the air PTC is not operating, it does not provide additional heating to the air; the outlet temperature of the heater core is the final air temperature entering the passenger compartment. This method avoids unnecessary calculations, directly utilizing known data and improving prediction accuracy and efficiency. When the air PTC is operating, the outlet temperature is predicted by considering both the blower's warm air volume and the heater core's outlet temperature. By combining these two key parameters, the actual outlet temperature of the air PTC can be predicted more accurately.

[0112] Combination Figure 3 As shown in the embodiments of this disclosure, another method for predicting the outlet air temperature of an automotive air conditioner is provided. The method for predicting the outlet air temperature of an automotive air conditioner includes:

[0113] S301, the device acquires the first temperature influencing factor corresponding to the warm air core, and predicts the outlet air temperature of the warm air core based on the first temperature influencing factor.

[0114] S302, the device obtains the second temperature influencing factor corresponding to the air PTC.

[0115] In this embodiment, the second temperature-influencing factor includes the operating status of the air PTC and the blower's warm air volume. The operating status of the PTC includes not operating and operating. If the air PTC is not operating, it cannot effectively transfer heat to the air, and therefore cannot provide sufficient warm air; if the air PTC is operating, it can provide warm air of the appropriate temperature to the passenger compartment. The blower's warm air volume refers to the airflow delivered by the blower in the air conditioning system per unit time through the warm air core and the air PTC. In an automotive air conditioning system, the blower is used to push air through heating elements such as the warm air core and the air PTC, ultimately delivering the heated air into the passenger compartment.

[0116] S303, when the air PTC is not in operation, the outlet temperature of the warm air core is used as the outlet temperature of the air PTC.

[0117] S304, when the air PTC is in operation, the device predicts the air outlet temperature of the air PTC based on the blower's warm air volume and the outlet temperature of the warm air core.

[0118] In this embodiment of the disclosure, the actual power of the air PTC can be determined, and the heat capacity flow rate can be calculated based on the blower's warm air volume and the specific heat capacity of the air; the ratio of the actual power of the air PTC to the heat capacity flow rate is used as the incremental temperature; and the sum of the incremental temperature and the outlet temperature of the warm air core is used as the outlet temperature of the air PTC.

[0119] S305, the device determines the working mode of the air outlet and determines the third temperature influencing factor corresponding to the air outlet based on the working mode of the air outlet.

[0120] S306, the device predicts the outlet air temperature based on the outlet air temperature of the air PTC, the outlet air mode, and the third temperature influencing factor.

[0121] In some embodiments, using the ratio of the actual power of the air PTC to the heat capacity flow rate as the incremental temperature includes: determining a second adjustment coefficient corresponding to the air PTC based on the blower's warm air volume; using the ratio of the actual power of the air PTC to the heat capacity flow rate as a reference temperature; and determining the incremental temperature based on the reference target temperature and the second adjustment coefficient corresponding to the air PTC.

[0122] Alternatively, the outlet air temperature of the air PTC can be calculated using the following formula:

[0123] T APTC =(P APTC / (Z×C))×&+T hex .

[0124] In the above formula, T APTC P is the outlet temperature of the air PTC. APTC Z is the actual power of the air PTC, C is the blower's warm air volume, C is the specific heat capacity of air, & is the second adjustment coefficient corresponding to the air PTC, and T is the actual power of the air PTC. hex The outlet air temperature of the heater core. (P) APTC / (Z×C)) is the reference temperature, (P) APTC / (Z×C))×& represents the incremental temperature.

[0125] In some embodiments of this disclosure, the number of air outlet types is two, and the operating modes of the air outlets include a blowing mode and a defrosting mode. Optionally, the two types of air outlets are a face air outlet and a foot air outlet, and the number of each type of air outlet can be determined according to actual design needs.

[0126] In some embodiments, the operating mode of the air outlet is determined, and a third temperature influencing factor corresponding to the air outlet is determined based on the operating mode of the air outlet, including: when one air outlet is in defrost mode and the other air outlet is in blowing mode, the third temperature influencing factor corresponding to the air outlet includes the vehicle interior temperature and the evaporator outlet temperature; when both air outlets are in blowing mode, the third temperature influencing factor corresponding to the air outlet includes the evaporator outlet temperature.

[0127] In some embodiments, when one air outlet is in defrost mode and the other air outlet is in blowing mode, the air outlet temperature is predicted based on the air outlet temperature of the PTC, the air outlet operating mode, and a third temperature influencing factor. This includes: for the air outlet in defrost mode, calculating the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature, and using the target temperature sum as the air outlet temperature; for the air outlet in blowing mode, using the vehicle interior temperature as the air outlet temperature.

[0128] Combination Figure 4 As shown in the embodiments of this disclosure, another method for predicting the outlet air temperature of an automotive air conditioner is provided. The method for predicting the outlet air temperature of an automotive air conditioner includes:

[0129] S401, the device acquires the first temperature influencing factor corresponding to the warm air core, and predicts the outlet air temperature of the warm air core based on the first temperature influencing factor.

[0130] S402, the device acquires the second temperature influencing factor corresponding to the air PTC, and predicts the air outlet temperature of the air PTC based on the second temperature influencing factor and the outlet temperature of the warm air core.

[0131] S403, when one air outlet is in defrost mode and the other air outlet is in blowing mode, the third temperature influencing factor for the air outlet includes the vehicle interior temperature and the evaporator outlet temperature.

[0132] Optionally, when the face air outlet is in defrost mode and the foot air outlet is in blower mode, the third temperature influencing factor for the air outlet includes the vehicle interior temperature and the evaporator outlet temperature.

[0133] Optionally, when the foot vent is in defrost mode and the face vent is in blow mode, the third temperature influencing factor for the vent includes the vehicle interior temperature and the evaporator outlet temperature.

[0134] S404, for air outlets in defrost mode, the device calculates the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature, and uses the target temperature sum as the outlet temperature; for air outlets in blower mode, the vehicle interior temperature is used as the outlet temperature.

[0135] Optionally, when the face air outlet is in defrost mode and the foot air outlet is in blowing mode, for the face air outlet, the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature is calculated, and the target temperature sum is used as the outlet temperature; for the foot air outlet, the vehicle interior temperature is used as the outlet temperature.

[0136] Optionally, when the foot air outlet is in defrost mode and the face air outlet is in blowing mode, for the foot air outlet, the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature is calculated, and the target temperature sum is used as the outlet temperature; for the face air outlet, the vehicle interior temperature is used as the outlet temperature.

[0137] S405, when both air outlets are in blowing mode, the third temperature influencing factor for the air outlet includes the evaporator outlet temperature.

[0138] Optionally, when both the foot-blowing air outlet and the face-blowing air outlet are in blowing mode, the third temperature influencing factor corresponding to the air outlet includes the evaporator outlet temperature.

[0139] S406, the device calculates the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature for the outlet in blowing mode, and uses the target temperature sum as the outlet temperature.

[0140] Optionally, when both the foot-blowing air outlet and the face-blowing air outlet are in blowing mode, the target temperature sum of the evaporator outlet air PTC and the target temperature sum are calculated for the foot-blowing air outlet or the face-blowing air outlet, and the target temperature sum is used as the outlet air temperature of that outlet.

[0141] In some embodiments, the third temperature influencing factor includes a mixing damper ratio coefficient, a blower warm air volume, and a blower total air volume. Calculating the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature includes: determining a weighting coefficient for the evaporator outlet temperature and the air PTC outlet temperature based on the mixing damper ratio coefficient; determining a third adjustment coefficient based on the vehicle interior temperature, the blower warm air volume, and the blower total air volume; calculating a weighted average temperature of the evaporator outlet temperature and the air PTC outlet temperature based on the evaporator outlet temperature, the air PTC outlet temperature, and the corresponding weighting coefficients; and calculating the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature based on the weighted average temperature and the third adjustment coefficient.

[0142] In this embodiment, the mixing damper is located inside the air conditioning unit. Adjusting the damper's position controls the ratio of cold air to hot air, thereby adjusting the outlet temperature. The mixing damper ratio coefficient is typically used to describe the ratio of cold air to hot air at different positions of the mixing damper. The blower's warm air volume refers to the airflow rate delivered by the blower in the air conditioning system per unit time through the warm air core and the air PTC. The total blower air volume is the total airflow rate delivered by the blower.

[0143] In some embodiments, determining the weighting coefficient of the evaporator outlet temperature and the air PTC outlet temperature based on the mixing damper ratio coefficient includes: using the mixing damper ratio coefficient as the weighting coefficient of the air PTC outlet temperature, and using the difference between 1 and the mixing damper ratio coefficient as the weighting coefficient of the evaporator outlet temperature.

[0144] In some embodiments, determining a third adjustment coefficient based on the vehicle interior temperature, the blower's warm air volume, and the blower's total air volume includes: determining a first influence factor coefficient based on the vehicle interior temperature and the blower's warm air volume, determining a second influence factor coefficient based on the blower's total air volume, and using the product of the first influence factor coefficient and the second influence factor coefficient as the third adjustment coefficient.

[0145] In some embodiments, calculating the target temperature sum of the outlet air temperature of the evaporator outlet air PTC based on the weighted average temperature and the third adjustment coefficient includes: multiplying the weighted average temperature by the third adjustment coefficient as the target temperature sum of the outlet air temperature of the evaporator outlet air PTC.

[0146] Optionally, the target temperature of the evaporator outlet air PTC can be calculated using the following formula:

[0147] T n =(T APTC ×ð1+T2×(1-ð1))×ð2×ð3.

[0148] T n The target temperature and T are the outlet air temperature of the evaporator and the outlet air temperature of the PTC. APTC ð1 is the outlet air temperature of the PTC air filter, ð2 is the first influencing factor coefficient, ð3 is the second influencing factor coefficient, (T) is the mixing damper ratio coefficient. APTC ×ð1+T2×(1-ð1)) is the weighted average temperature of the evaporator outlet air temperature and the air PTC outlet air temperature.

[0149] Combination Figure 5 As shown in the embodiments of this disclosure, another method for predicting the outlet air temperature of an automotive air conditioner is provided. The method for predicting the outlet air temperature of an automotive air conditioner includes:

[0150] S501, the device acquires the first temperature influencing factor corresponding to the warm air core.

[0151] S502, when the working state of the heating core is not working, the evaporator outlet air temperature is used as the outlet air temperature of the heating core.

[0152] S503, when the heater core is in working condition, the device predicts the outlet temperature of the heater core based on the evaporator outlet temperature and engine coolant temperature.

[0153] S504, the device obtains the second temperature influencing factor corresponding to the air PTC.

[0154] S505, when the air PTC is not in operation, the outlet temperature of the warm air core is used as the outlet temperature of the air PTC.

[0155] S506, when the air PTC is in operation, the device predicts the air outlet temperature of the air PTC based on the blower's warm air volume and the outlet temperature of the warm air core.

[0156] S507, the device determines the operating mode of the air outlet.

[0157] S508, when one air outlet is in defrost mode and the other air outlet is in blowing mode, the third temperature influencing factor for the air outlet includes the vehicle interior temperature and the evaporator outlet temperature.

[0158] S509, for air outlets in defrost mode, the device calculates the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature, and uses the target temperature sum as the outlet temperature; for air outlets in blower mode, the vehicle interior temperature is used as the outlet temperature.

[0159] S510, when both air outlets are in blowing mode, the third temperature influencing factor for the air outlet includes the evaporator outlet temperature.

[0160] S511, the device calculates the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature for the outlet in blowing mode, and uses the target temperature sum as the outlet temperature of the outlet.

[0161] Combination Figure 6 As shown, this embodiment of the present disclosure provides an air outlet temperature prediction device 600 for an automotive air conditioner. The air outlet temperature prediction device 600 includes a core temperature prediction module 601, a PTC temperature prediction module 602, an air outlet parameter determination module 603, and an air outlet temperature prediction module 604.

[0162] The core temperature prediction module 601 is configured to obtain the first temperature influencing factor corresponding to the warm air core, and predict the outlet air temperature of the warm air core based on the first temperature influencing factor.

[0163] The PTC temperature prediction module 602 is configured to acquire the second temperature influencing factor corresponding to the air PTC, and predict the air outlet temperature of the air PTC based on the second temperature influencing factor and the outlet temperature of the warm air core.

[0164] The air outlet parameter determination module 603 is configured to determine the working mode of the air outlet and determine the third temperature influencing factor corresponding to the air outlet based on the working mode of the air outlet.

[0165] The outlet temperature prediction module 604 is configured to predict the outlet temperature based on the outlet temperature of the air PTC, the outlet working mode, and a third temperature influencing factor.

[0166] The automotive air conditioning outlet temperature prediction device provided in this embodiment fully considers the temperature influencing factors related to the operating modes of the heater core, air PTC, and air outlet. Based on the corresponding temperature influencing factors, it determines the outlet temperature of the heater core, the outlet temperature of the air PTC, and the outlet temperature in sequence, thereby obtaining a more accurate outlet temperature. This method of determining the outlet temperature eliminates the need for a dedicated temperature sensor to detect the outlet area, simplifying the structure of the air conditioning unit and reducing manufacturing costs. The process of predicting the outlet temperature comprehensively considers multiple dimensions of temperature influencing factors, resulting in a more accurate final outlet temperature.

[0167] In some embodiments, the first temperature influencing factors include the operating state of the heater core, the evaporator outlet air temperature, and the engine coolant temperature. The core temperature prediction module 601 is configured to:

[0168] When the heating core is not in operation, the evaporator outlet temperature is taken as the outlet temperature of the heating core.

[0169] When the heater core is in operation, the outlet temperature of the heater core is predicted based on the evaporator outlet temperature and engine coolant temperature.

[0170] In some embodiments, the core temperature prediction module 601 is configured to:

[0171] Calculate the target temperature and the temperature difference between the engine coolant temperature and the evaporator outlet air temperature;

[0172] The sum of the target temperature and the difference with the evaporator outlet air temperature is taken as the outlet air temperature of the warm air core.

[0173] In some embodiments, the first temperature influencing factors further include ambient temperature, engine thermostat opening, engine water pump speed, heater core flow rate, and heater core air volume. The heater core temperature prediction module 601 is configured to:

[0174] The first adjustment coefficient corresponding to the heater core is determined based on the engine coolant temperature, the target ambient temperature, and the engine thermostat opening.

[0175] The heat exchange efficiency coefficient of the heater core is determined based on the engine water pump speed, heater core flow rate, and heater core air volume.

[0176] Based on the first adjustment coefficient corresponding to the heater core, the heat exchange efficiency coefficient of the heater core, the engine water temperature and the evaporator outlet air temperature, calculate the target temperature and the temperature difference between the engine water temperature and the evaporator outlet air temperature.

[0177] In some embodiments, the second temperature influencing factor includes the operating status of the air PTC and the blower's warm air volume. The PTC temperature prediction module 602 is configured to:

[0178] When the air PTC is not in operation, the outlet temperature of the warm air core is taken as the outlet temperature of the air PTC.

[0179] When the air PTC is in operation, the air outlet temperature is predicted based on the blower's warm air volume and the outlet temperature of the warm air core.

[0180] In some embodiments, the PTC temperature prediction module 602 is configured to:

[0181] Determine the actual power of the air PTC and calculate the heat capacity flow rate based on the blower's warm air volume and the specific heat capacity of the air.

[0182] The ratio of the actual power of the air PTC to the heat capacity flow rate is used as the incremental temperature.

[0183] The sum of the incremental temperature and the outlet temperature of the warm air core is used as the outlet temperature of the air PTC.

[0184] In some embodiments, the PTC temperature prediction module 602 is configured to:

[0185] The second adjustment coefficient corresponding to the air PTC is determined based on the blower's warm air volume.

[0186] The ratio of the actual power of the air PTC to the heat capacity flow rate is used as the reference temperature.

[0187] The incremental temperature is determined based on the reference target temperature and the second adjustment coefficient corresponding to the air PTC.

[0188] In some embodiments, the number of air outlet types is two, and the operating modes of the air outlets include a blowing mode and a defrosting mode. The air outlet parameter determination module 603 is configured as follows:

[0189] When one air outlet is in defrost mode and the other air outlet is in blowing mode, the third temperature influencing factor for the air outlet includes the vehicle interior temperature and the evaporator outlet temperature.

[0190] When both air outlets are in blowing mode, the third temperature influencing factor for the air outlet includes the evaporator outlet temperature.

[0191] In some embodiments, when one air outlet is in defrost mode and the other air outlet is in blowing mode, the air outlet temperature prediction module 604 is configured to:

[0192] For the air outlet in defrost mode, calculate the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature, and use the target temperature sum as the outlet temperature.

[0193] For air vents in blowing mode, the interior temperature of the vehicle is used as the air outlet temperature.

[0194] In some embodiments, when both air outlets are in blowing mode, the air outlet temperature prediction module 604 is configured to:

[0195] For the air outlet in blowing mode, calculate the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature, and use the target temperature sum as the outlet temperature.

[0196] In some embodiments, the third temperature influencing factor includes the mixing damper ratio coefficient, the blower's warm air volume, and the blower's total air volume. The outlet temperature prediction module 604 is configured as follows:

[0197] The weighting coefficient for the evaporator outlet air temperature PTC is determined based on the mixing damper ratio coefficient, and the third adjustment coefficient is determined based on the vehicle interior temperature, the blower's warm air volume, and the blower's total air volume.

[0198] Based on the evaporator outlet temperature, the air PTC outlet temperature, and the corresponding weighting coefficients, calculate the weighted average temperature of the evaporator outlet temperature and the air PTC outlet temperature.

[0199] Based on the weighted average temperature and the third adjustment coefficient, the target temperature of the air outlet temperature PTC of the evaporator is calculated.

[0200] Combination Figure 7As shown, this disclosure provides another automotive air conditioning outlet temperature prediction device 700, which includes a processor 701 and a memory 702. Optionally, the outlet temperature prediction device 700 may further include a communication interface 703 and a bus 704. The processor 701, communication interface 703, and memory 702 can communicate with each other via the bus 704. The communication interface 703 can be used for information transmission. The processor 701 can call logical instructions in the memory 702 to execute the automotive air conditioning outlet temperature prediction method of the above embodiment.

[0201] Furthermore, the logic instructions in the aforementioned memory 702 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0202] The memory 702, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 701 executes functional applications and data processing by running the program instructions / modules stored in the memory 702, that is, it implements the method for predicting the outlet air temperature of the automotive air conditioner in the above embodiments.

[0203] The memory 702 may include a program storage area and a data storage area. The program storage area may store the operating system and application programs required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 702 may include high-speed random access memory and may also include non-volatile memory.

[0204] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for predicting the outlet air temperature of an automotive air conditioner.

[0205] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, such as a USB flash drive, external hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc., and other media capable of storing program code.

[0206] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0207] Those skilled in the art will recognize that the units and algorithm steps of the various examples 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 implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art 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 embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

Claims

1. A method for predicting the outlet air temperature of an automotive air conditioner, characterized in that, include: Obtain the first temperature influencing factor corresponding to the heater core, and predict the outlet air temperature of the heater core based on the first temperature influencing factor. Obtain the second temperature influencing factor corresponding to the air PTC, and predict the air outlet temperature of the air PTC based on the second temperature influencing factor and the outlet temperature of the warm air core. Determine the operating mode of the air outlet, and based on the operating mode, determine the corresponding third temperature influencing factor. There are two types of air outlets, and the operating modes include blowing mode and defrosting mode. Based on the air PTC outlet temperature, the air outlet operating mode, and the third temperature influencing factor, predict the outlet temperature. This step includes: When one air outlet is in defrost mode and the other is in blowing mode, the third temperature influencing factor for the air outlet includes the vehicle interior temperature and the evaporator outlet temperature. For the air outlet in defrost mode, the target temperature of the evaporator outlet temperature and the air PTC outlet temperature are calculated, and the target temperature is used as the outlet temperature. For the air outlet in blowing mode, the vehicle interior temperature is used as the outlet temperature. When both air outlets are in blowing mode, the third temperature influencing factor for the air outlet includes the evaporator outlet temperature; for the air outlet in blowing mode, calculate the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature, and use the target temperature sum as the outlet temperature.

2. The method for predicting outlet air temperature according to claim 1, characterized in that, The primary temperature-influencing factors include the working status of the heater core, the evaporator outlet air temperature, and the engine coolant temperature. Predicting the outlet air temperature of the heater core based on the first temperature influencing factor includes: When the heating core is not in operation, the evaporator outlet temperature is taken as the outlet temperature of the heating core. When the heater core is in operation, the outlet temperature of the heater core is predicted based on the evaporator outlet temperature and engine coolant temperature.

3. The method for predicting outlet air temperature according to claim 2, characterized in that, Predicting the heater core outlet temperature based on evaporator outlet temperature and engine coolant temperature includes: Calculate the target temperature and the temperature difference between the engine coolant temperature and the evaporator outlet air temperature; The sum of the target temperature and the difference with the evaporator outlet air temperature is taken as the outlet air temperature of the warm air core.

4. The method for predicting outlet air temperature according to claim 3, characterized in that, The primary temperature-influencing factors also include ambient temperature, engine thermostat opening, engine water pump speed, heater core flow rate, and heater core air volume. Calculate the target temperature and the temperature difference between the engine coolant temperature and the evaporator outlet air temperature, including: The first adjustment coefficient corresponding to the heater core is determined based on the engine coolant temperature, the target ambient temperature, and the engine thermostat opening. The heat exchange efficiency coefficient of the heater core is determined based on the engine water pump speed, heater core flow rate, and heater core air volume. Based on the first adjustment coefficient corresponding to the heater core, the heat exchange efficiency coefficient of the heater core, the engine water temperature and the evaporator outlet air temperature, calculate the target temperature and the temperature difference between the engine water temperature and the evaporator outlet air temperature.

5. The method for predicting outlet air temperature according to claim 1, characterized in that, The second temperature-influencing factor includes the operating status of the air PTC and the warm air volume of the blower. Based on the second temperature influencing factor and the outlet air temperature of the warm air core, the outlet air temperature of the air PTC is predicted, including: When the air PTC is not in operation, the outlet temperature of the warm air core is taken as the outlet temperature of the air PTC. When the air PTC is in operation, the air outlet temperature is predicted based on the blower's warm air volume and the outlet temperature of the warm air core.

6. The method for predicting outlet air temperature according to claim 5, characterized in that, Predicting the outlet air temperature of the PTC (Potential Temperature Coefficient) based on the blower's warm air volume and the outlet air temperature of the warm air core includes: Determine the actual power of the air PTC and calculate the heat capacity flow rate based on the blower's warm air volume and the air's specific heat capacity. The ratio of the actual power of the air PTC to the heat capacity flow rate is used as the incremental temperature. The sum of the incremental temperature and the outlet temperature of the warm air core is used as the outlet temperature of the air PTC.

7. The method for predicting outlet air temperature according to claim 6, characterized in that, The ratio of the actual power of the air PTC to the heat capacity flow rate is used as the incremental temperature, including: The second adjustment coefficient corresponding to the air PTC is determined based on the blower's warm air volume. The ratio of the actual power of the air PTC to the heat capacity flow rate is used as the reference temperature. The incremental temperature is determined based on the reference target temperature and the second adjustment coefficient corresponding to the air PTC.

8. The method for predicting outlet air temperature according to claim 1, characterized in that, The third temperature-influencing factor includes the mixing damper ratio coefficient, the blower's warm air volume, and the blower's total air volume; The target temperature for calculating the evaporator outlet air temperature and the PTC outlet air temperature includes: The weighting coefficient for the evaporator outlet air temperature PTC is determined based on the mixing damper ratio coefficient, and the third adjustment coefficient is determined based on the vehicle interior temperature, the blower's warm air volume, and the blower's total air volume. Based on the evaporator outlet temperature, the air PTC outlet temperature, and the corresponding weighting coefficients, calculate the weighted average temperature of the evaporator outlet temperature and the air PTC outlet temperature. Based on the weighted average temperature and the third adjustment coefficient, the target temperature of the air outlet temperature PTC of the evaporator is calculated.

9. A device for predicting the outlet air temperature of an automotive air conditioner, characterized in that, include: The core temperature prediction module is configured to obtain the first temperature influencing factor corresponding to the warm air core, and predict the outlet air temperature of the warm air core based on the first temperature influencing factor. The PTC temperature prediction module is configured to acquire the second temperature influencing factor corresponding to the air PTC, and predict the air outlet temperature of the air PTC based on the second temperature influencing factor and the outlet temperature of the warm air core. The air outlet parameter determination module is configured to determine the working mode of the air outlet and determine the third temperature influencing factor corresponding to the air outlet based on the working mode of the air outlet. The number of air outlet types is 2, and the working modes of the air outlet include blowing mode and defrosting mode. The outlet temperature prediction module is configured to predict the outlet temperature based on the outlet temperature (PTC), the outlet's operating mode, and a third temperature influencing factor. This step includes: When one air outlet is in defrost mode and the other is in blowing mode, the third temperature influencing factor for the air outlet includes the vehicle interior temperature and the evaporator outlet temperature. For the air outlet in defrost mode, the target temperature of the evaporator outlet temperature and the air PTC outlet temperature are calculated, and the target temperature is used as the outlet temperature. For the air outlet in blowing mode, the vehicle interior temperature is used as the outlet temperature. When both air outlets are in blowing mode, the third temperature influencing factor for the air outlet includes the evaporator outlet temperature; for the air outlet in blowing mode, calculate the target temperature sum of the evaporator outlet temperature and the air PTC outlet temperature, and use the target temperature sum as the outlet temperature.

10. A device for predicting the outlet air temperature of an automotive air conditioner, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute the method for predicting the outlet air temperature of an automotive air conditioner as described in any one of claims 1 to 8 when running program instructions.

11. A car, characterized in that, Includes the air outlet temperature prediction device for automotive air conditioning as described in claim 9 or 10.

12. A storage medium, characterized in that, The storage medium stores computer program instructions, which, when executed by a processor, perform the method for predicting the outlet air temperature of an automotive air conditioner as described in any one of claims 1 to 8.

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