Method, device, vehicle and storage medium for calculating air outlet temperature of automobile air conditioner

Abstract

The application discloses a kind of calculating method, equipment, vehicle and storage medium of automobile air conditioner air outlet temperature, the method comprises: obtaining the air outlet temperature of automobile air conditioner evaporation core;Obtain the air outlet temperature of automobile air conditioner warm air core;Obtain air volume proportion, and the air volume proportion is warm air proportion or cold air proportion;According to air volume proportion, the air outlet temperature of evaporation core and the air outlet temperature of warm air core, mixed air temperature is calculated;According to mixed air temperature, the air outlet temperature of each air outlet is calculated, and the air outlet temperature is the temperature after the air flow of mixed air chamber through the air outlet corresponding air outlet duct.The application realizes that air outlet temperature can be calculated without setting temperature sensor in air outlet, reduces the manufacturing cost of vehicle while improving the reliability of temperature acquisition.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle control, and in particular to a method, device, vehicle and storage medium for calculating air outlet temperature of an automotive air conditioner. BACKGROUND

[0002] An automotive air conditioning device (automotive air conditioning device, for short, "automotive air conditioner") is used to adjust and control the temperature, humidity, air cleanliness and air flow in the vehicle cabin to the best state, to provide a comfortable riding environment for passengers and reduce travel fatigue; to create good working conditions for the driver, which plays an important role in ensuring safe driving. With the development of the automotive industry and the significant improvement of people's living quality, consumers' pursuit of automotive comfort is increasing, and automotive air conditioners have gradually become a standard configuration on vehicles.

[0003] In the automatic control system of the automotive air conditioner, the accurate detection of the temperature and light intensity inside and outside the vehicle plays a crucial role. By collecting the above data, the system can perform scientific heat load calculation, and then realize accurate control of the air outlet temperature to ensure that the temperature in the vehicle meets the individualized setting needs of the driver and passenger. In view of this, in the related art, multiple air outlet temperature sensors of different positions (for example, an air outlet position blowing to the vehicle window (blowing window position), an air outlet position blowing to the driver's face (blowing face position), and an air outlet position blowing to the driver's feet (blowing feet position)) can be provided on the vehicle to realize accurate control of the air outlet temperature, and to bring passengers a more comfortable and intelligent driving experience.

[0004] However, the provision of temperature sensors of different air outlet positions will greatly increase the manufacturing cost of the vehicle, and if the sensor fails, the distortion of the reference temperature will reduce the accuracy and precision of the system, and even cause the entire system to fail. SUMMARY

[0005] The present application provides a method for calculating the air outlet temperature of an automotive air conditioner, which can solve the problem of high manufacturing cost and reliability risk caused by measuring the temperature of each air outlet by providing temperature sensors of different air outlet positions in the related art.

[0006] In one aspect, the present application provides a method for calculating the air outlet temperature of an automotive air conditioner, comprising:

[0007] obtaining the air outlet temperature of the evaporative core of the automotive air conditioner, the air outlet temperature of the evaporative core being the temperature of the air entering the automotive air conditioner after flowing through the evaporative core;

[0008] obtaining an air outlet temperature of the heating core of the automobile air conditioner, the air outlet temperature of the heating core being a temperature of air flowing out of the evaporative core after flowing through the heating core;

[0009] obtaining a wind volume ratio, the wind volume ratio being a heating wind volume ratio or a cooling wind volume ratio, the heating wind volume ratio being used to indicate a ratio of a wind volume flowing through the heating core to a total inlet air volume, the cooling wind volume ratio being used to indicate a ratio of a wind volume not flowing through the heating core to the total inlet air volume, the total inlet air volume being an inlet air volume of the evaporative core;

[0010] calculating a mixed air temperature according to the wind volume ratio, the air outlet temperature of the evaporative core and the air outlet temperature of the heating core, the mixed air temperature being used to indicate a temperature of air flowing through the evaporative core and the heating core after mixing in a mixed air chamber of the automobile air conditioner;

[0011] calculating an air outlet temperature of each air outlet according to the mixed air temperature, the air outlet temperature being a temperature of air flowing through an air outlet duct corresponding to the air outlet after flowing through the mixed air chamber.

[0012] In some embodiments, the calculating the air outlet temperature of each air outlet according to the mixed air temperature comprises:

[0013] obtaining a wind volume of each air outlet;

[0014] calculating the air outlet temperature of each air outlet according to an indoor temperature, the mixed air temperature and the wind volume of each air outlet.

[0015] In some embodiments, the obtaining the wind volume of each air outlet comprises:

[0016] calculating the wind volume of each air outlet according to the total inlet air volume and a wind volume distribution coefficient of each air outlet, the wind volume distribution coefficient being used to indicate a ratio of a wind volume distributed to each air outlet to a total outlet air volume.

[0017] In some embodiments, the calculating the air outlet temperature of each air outlet according to an indoor temperature, the mixed air temperature and the wind volume of each air outlet comprises:

[0018] calculating an air duct temperature loss of each air outlet according to the indoor temperature, the mixed air temperature and the wind volume of each air outlet;

[0019] calculating the air outlet temperature of each air outlet according to the mixed air temperature and the air duct temperature loss of each air outlet.

[0020] In some embodiments, the calculating the air outlet temperature of each air outlet according to the mixed air temperature and the air duct temperature loss of each air outlet comprises:

[0021] For any air outlet, the outlet air temperature is obtained by calculating the difference between the mixed air temperature and the duct temperature loss of the air outlet.

[0022] In some embodiments, obtaining the air volume percentage includes:

[0023] The proportion of warm air is calculated based on the positions of the temperature damper and the mode damper.

[0024] In some embodiments, calculating the mixed air temperature based on the air volume ratio, the outlet air temperature of the evaporator core, and the outlet air temperature of the warm air core includes:

[0025] The proportion of cold air is calculated based on the proportion of warm air.

[0026] The mixed air temperature is calculated based on the warm air ratio, the outlet temperature of the warm air core, the cold air ratio, and the outlet temperature of the warm air core.

[0027] In some embodiments, obtaining the air volume percentage includes:

[0028] The proportion of cold air is calculated based on the positions of the temperature damper and the mode damper.

[0029] In some embodiments, calculating the mixed air temperature based on the air volume ratio, the outlet air temperature of the evaporator core, and the outlet air temperature of the warm air core includes:

[0030] The proportion of warm air is calculated based on the proportion of cold air.

[0031] The mixed air temperature is calculated based on the warm air ratio, the outlet temperature of the warm air core, the cold air ratio, and the outlet temperature of the warm air core.

[0032] In some embodiments, obtaining the outlet air temperature of the evaporator core of the automotive air conditioner includes:

[0033] The air inlet temperature of the evaporator core is calculated based on the position of the recirculation damper of the car air conditioner, the interior temperature, and the exterior temperature.

[0034] The outlet air temperature of the evaporator core of the automotive air conditioner is calculated based on the inlet air temperature of the evaporator core, the surface temperature of the evaporator core, and the total inlet air volume.

[0035] In some embodiments, calculating the intake air temperature of the evaporator core based on the position of the recirculation damper of the vehicle air conditioner, the interior temperature, and the exterior temperature includes:

[0036] The external air ratio is calculated based on the position of the circulating air damper. The external air ratio is used to indicate the ratio of the air volume entering from outside the vehicle to the total air volume.

[0037] The air inlet temperature of the evaporator core is calculated based on the in-vehicle temperature, the outside temperature, and the proportion of outside air.

[0038] In some embodiments, calculating the outlet air temperature of the evaporator core of the automotive air conditioner based on the inlet air temperature of the evaporator core, the surface temperature of the evaporator core, and the total inlet air volume includes:

[0039] Calculate the temperature difference between the surface temperature of the evaporator core and the inlet air temperature of the evaporator core;

[0040] The front and back temperature difference of the evaporator core is calculated based on the temperature difference between the surface temperature of the evaporator core and the inlet air temperature of the evaporator core, as well as the total inlet air volume. The front and back temperature difference of the evaporator core is used to indicate the temperature change of the air after it flows through the evaporator core.

[0041] The outlet temperature of the evaporator core is calculated based on the inlet air temperature of the evaporator core and the temperature difference between the front and back of the evaporator core.

[0042] In some embodiments, obtaining the outlet air temperature of the heating core of the automotive air conditioner includes:

[0043] The front and rear temperature difference of the heating core is calculated based on the outlet air temperature of the evaporator core, the inlet water temperature of the heating core, and the inlet air volume of the heating core. The front and rear temperature difference of the heating core is used to indicate the temperature change of the air after it flows through the heating core.

[0044] The outlet temperature of the heating core is calculated based on the outlet temperature of the evaporator core and the temperature difference between the front and rear of the heating core.

[0045] In some embodiments, calculating the outlet temperature of the warm air core based on the outlet temperature of the evaporator core and the temperature difference before and after the warm air core includes:

[0046] The original outlet temperature of the warm air core is calculated based on the outlet temperature of the evaporator core and the temperature difference before and after the warm air core.

[0047] The outlet air temperature of the heater core is corrected based on the coolant flow rate of the heater core to obtain the outlet air temperature of the heater core.

[0048] In some embodiments, calculating the temperature difference before and after the heating core based on the outlet air temperature of the evaporator core, the inlet water temperature of the heating core, and the inlet air volume of the heating core includes:

[0049] The proportion of warm air is calculated based on the positions of the temperature damper and the mode damper.

[0050] The air intake volume of the heating core is calculated based on the total air intake volume and the proportion of warm air.

[0051] Calculate the temperature difference between the inlet water temperature of the heater core and the outlet air temperature of the evaporator core;

[0052] The temperature difference between the front and back of the heater core is calculated based on the temperature difference between the inlet water temperature of the heater core and the outlet air temperature of the evaporator core, as well as the air volume of the heater core.

[0053] On the other hand, embodiments of this application provide a computer device, wherein the battery control system includes a processor and a memory, the memory storing at least one instruction or program, the instruction or program being loaded and executed by the processor to implement the method for calculating the air outlet temperature of an automotive air conditioner as described above.

[0054] On the other hand, embodiments of this application provide a vehicle equipped with the computer equipment described above.

[0055] On the other hand, embodiments of this application provide a computer-readable storage medium storing at least one instruction, which is loaded and executed by a processor to implement the method for calculating the air outlet temperature of an automotive air conditioner as described above.

[0056] The technical solution of this application has at least the following advantages:

[0057] By obtaining the outlet air temperature of the evaporator core and the outlet air temperature of the heater core of the car air conditioner, the air volume ratio is obtained. Based on the air volume ratio, the outlet air temperature of the evaporator core and the outlet air temperature of the heater core, the mixed air temperature is calculated. Based on the mixed air temperature, the outlet air temperature of each air outlet is calculated. This allows the outlet air temperature to be calculated without installing temperature sensors at the air outlets, which reduces the manufacturing cost of the vehicle and reduces potential reliability issues of the air conditioning control system. Attached Figure Description

[0058] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0059] Figure 1 This is a schematic diagram of airflow within the air conditioning unit of a car's air conditioning system.

[0060] Figure 2 This is a flowchart of a method for calculating the air outlet temperature of an automotive air conditioner according to an exemplary embodiment of this application;

[0061] Figure 3 This is a flowchart illustrating a method for calculating the outlet air temperature of an evaporator core according to an exemplary embodiment of this application;

[0062] Figure 4 This is a schematic diagram of data processing in the method for calculating the outlet air temperature of the evaporator core provided in an exemplary embodiment of this application;

[0063] Figure 5 This is a flowchart illustrating a method for calculating the outlet air temperature of an evaporator core according to an exemplary embodiment of this application;

[0064] Figure 6 This is a schematic diagram of data processing in the method for calculating the outlet air temperature of the warm air core provided in an exemplary embodiment of this application;

[0065] Figure 7 This is a flowchart of a method for calculating the outlet air temperature of an automotive air conditioner according to an exemplary embodiment of this application;

[0066] Figure 8 This is a schematic diagram of data processing in a method for calculating the outlet air temperature of an automotive air conditioner provided in an exemplary embodiment of this application;

[0067] Figure 9 This is a block diagram of a computer device provided in an exemplary embodiment of this application. Detailed Implementation

[0068] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0069] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0070] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0071] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0072] refer to Figure 1 It shows a schematic diagram of airflow within the air conditioning unit of a car's air conditioning system. (For example...) Figure 1 As shown, the air conditioning unit 100 is equipped with an evaporator core 110 and a heater core 120. The evaporator core 110 is used to cool the air flowing through it with refrigerant, and the heater core 120 is used to heat the air flowing through it.

[0073] When air with a volume of m (total intake air volume) and a temperature of T0 enters the air conditioning unit 100, it first flows through the evaporator core 110. The air temperature exiting the evaporator core 110 is T1 (the outlet air temperature of the evaporator core). Under the distribution of the temperature damper 131, air with a volume of m1 flows directly into the mixing chamber 130, while air with a volume of m2 flows through the warm air core 120 and enters the mixing chamber 130. The air temperature exiting the warm air core 120 is T2 (the outlet air temperature of the warm air core). The temperature of the air mixed in the mixing chamber 130 with the air that did not pass through the warm air core 120 is T3 (the mixed air temperature). Then, the air in the mixing chamber 130 flows through different air outlets and is blown out from various air outlets. The number and orientation of the air outlets can be set according to requirements. Figure 1 The air duct configuration with a first air outlet 1301, a second air outlet 1302, and a third air outlet 1303 is used as an example for illustration.

[0074] Specifically, the first air outlet 1301 can be an air outlet blowing towards the vehicle window (window air outlet), the second air outlet 1302 can be an air outlet blowing towards the driver's face (face air outlet), and the third air outlet 1303 can be an air outlet blowing towards the driver's feet (foot air outlet). Each air outlet controls its allocated air volume through its corresponding damper (damper 1321 for the first air outlet 1301, damper 1322 for the second air outlet 1302, and damper 1323 for the third air outlet 1303). The allocated air volume for each air outlet is determined by the airflow mode. For example, when the air outlet mode is "window blowing mode", the first air outlet 1301 is allocated the highest proportion of air volume; when the air outlet mode is "face blowing mode", the second air outlet 1302 is allocated the highest proportion of air volume; and when the air outlet mode is "foot blowing mode", the third air outlet 1303 is allocated the highest proportion of air volume. The proportion of air volume allocated to each air outlet in each air outlet mode can be set according to actual application needs.

[0075] In related technologies, to ensure that the automatic control system of an automotive air conditioner can perform scientific heat load calculations and thus achieve precise control of the outlet air temperature, a temperature sensor is equipped at each air outlet. For example, such as... Figure 1 As shown, a first temperature sensor 141 can be installed at the first air outlet 1301, a second temperature sensor 142 at the second air outlet 1302, and a first temperature sensor 143 at the third air outlet 1303. However, as mentioned above, equipping temperature sensors at different air outlet locations significantly increases the manufacturing cost of the vehicle. Furthermore, if a sensor malfunctions, the distortion of its reference temperature will reduce the accuracy and precision of the system, and may even lead to the failure of the entire system. Therefore, this application provides a method for calculating the air outlet temperature of an automotive air conditioner. This method eliminates the need to equip sensors at each air outlet; it only requires data collected from sensors commonly found on vehicles to accurately calculate the air outlet temperature under different operating conditions and modes.

[0076] refer to Figure 2 The document illustrates a flowchart of a method for calculating the outlet air temperature of an automotive air conditioner according to an exemplary embodiment of this application. This method can be executed by a control device equipped on the vehicle (e.g., an electronic control unit (ECU)). Figure 2 As shown, the method includes:

[0077] Step 201: Obtain the outlet air temperature of the evaporator core of the car air conditioner. The outlet air temperature of the evaporator core is the temperature of the air entering the car air conditioner after flowing through the evaporator core.

[0078] For example, such as Figure 1As shown, the air entering the air conditioning unit 100 has a flow rate of m (referred to as the total air intake volume) and a temperature of T0 (referred to as the air intake temperature of the evaporator core) before flowing through the evaporator core 110. After flowing through the evaporator core 110, the air temperature is T1 (referred to as the air outlet temperature of the evaporator core). By controlling the temperature damper, the air with a flow rate of m1 (referred to as the air volume before passing through the warm air core) flows into the mixing chamber 130, and the air with a flow rate of m2 (referred to as the air volume after passing through the warm air core) flows into the warm air core 120.

[0079] The air inlet temperature T0 of the evaporator core can be obtained by a temperature sensor inside the vehicle (indoor temperature T). w ); or, taking into account the interior temperature T w Based on this, the external temperature of the vehicle (hereinafter referred to as "external temperature T") is introduced. o The air intake temperature T0 and the interior temperature T of the evaporator core can be obtained by fitting historical data (which can be obtained from the server via wireless network or collected by temperature sensors outside the vehicle) and fitted to historical data. w Outside temperature T o The mapping relationship will determine the interior temperature T. w Outside temperature T o Substituting this mapping relationship, the inlet air temperature T0 of the evaporator core is calculated; or, considering the interior temperature T... w Outside temperature T o Based on this, the external air ratio (which indicates the ratio of airflow entering from outside the vehicle to the total airflow) is calculated by the position of the recirculation damper on the vehicle (located at the front end of the evaporator core). This is then used to determine the vehicle's interior temperature T. w Outside temperature T o The inlet air temperature T0 of the evaporator core is calculated based on the proportion of external air.

[0080] Once the inlet air temperature T0 of the evaporator core is determined, the outlet air temperature T1 of the evaporator core can be determined. For example, a mapping relationship between the inlet air temperature T0 and the outlet air temperature T1 of the evaporator core can be obtained by fitting historical data, and the outlet air temperature T1 of the evaporator core can be calculated by substituting the inlet air temperature T0 into this mapping relationship; or, the surface temperature T of the evaporator core can be introduced into the calculation based on the inlet air temperature T0. e Based on historical data fitting, the outlet air temperature T1, inlet air temperature T0, and surface temperature T of the evaporator core were obtained. e The mapping relationship will determine the surface temperature T of the evaporation core. e The outlet air temperature T1 of the evaporator core can be calculated by substituting the inlet air temperature T0 of the evaporator core into the mapping relationship; or, the outlet air temperature T1 of the evaporator core can be calculated based on the inlet air temperature T0 and the surface temperature T of the evaporator core. eThe outlet air temperature of the evaporator core of the automotive air conditioner is calculated by combining the total air intake volume (m).

[0081] Step 202: Obtain the outlet air temperature of the heating core of the car air conditioner. The outlet air temperature of the heating core is the temperature of the air flowing out of the evaporator core after passing through the heating core.

[0082] For example, such as Figure 1 As shown, after the air flows through the evaporator core 110, its temperature is T1. By controlling the temperature damper, air with a flow rate of m2 flows into the heater core 120. The outlet temperature T2 of the heater core can be calculated based on the outlet temperature T1 of the evaporator core. For example, a mapping relationship between the outlet temperature T1 of the evaporator core and the outlet temperature T2 of the heater core can be obtained by fitting historical data. The outlet temperature T1 of the evaporator core calculated in step 201 can be substituted into this mapping relationship to calculate the outlet temperature T2 of the heater core; or, the inlet water temperature T of the heater core can be introduced based on the outlet temperature T1 of the evaporator core. h The air intake volume (m2) of the heater core is obtained by fitting historical data to determine the outlet air temperature (T2) and inlet water temperature (T) of the heater core. h The mapping relationship between the air intake volume m2 of the heater core and the inlet water temperature T of the heater core. h The air inlet volume m2 of the heater core is substituted into this mapping relationship to calculate the outlet air temperature T1 of the evaporator core; or, considering the outlet air temperature T1 of the evaporator core and the inlet water temperature T of the heater core... h Based on the air intake volume (m2) of the heater core, the coolant flow rate (m) of the heater core is introduced. c Based on historical data fitting, the outlet air temperature T2 and the inlet water temperature T of the heater core were obtained. h 1. Air intake volume of the heater core (m2) 2. Coolant flow rate of the heater core (m2) c The mapping relationship will determine the inlet water temperature T of the heater core. h 1. Air intake volume of the heater core (m2) 2. Coolant flow rate of the heater core (m2) c The outlet air temperature T2 of the heater core is calculated by substituting this mapping relationship.

[0083] Step 203: Obtain the air volume ratio, which is either the warm air ratio or the cold air ratio. The warm air ratio indicates the ratio of the air volume flowing through the warm air core to the total air volume, while the cold air ratio indicates the ratio of the air volume that does not pass through the warm air core to the total air volume. The total air volume is the air volume entering the evaporator core.

[0084] For example, the proportion of warm air α2 can be calculated based on the positions of the temperature damper and the mode damper; or, the proportion of cold air α1 can be calculated based on the positions of the temperature damper and the mode damper. The position of the mode damper is determined by the air outlet mode.

[0085] Step 204: Calculate the mixed air temperature based on the air volume ratio, the outlet air temperature of the evaporator core, and the outlet air temperature of the heater core. The mixed air temperature is used to indicate the temperature of the air after it is mixed in the mixing chamber of the car air conditioner, passing through the evaporator core and the heater core.

[0086] Calculation of the mixed air temperature T3 :

[0087] like Figure 1 As shown, the air entering the air conditioning unit 100 first flows through the evaporator core 110. Under the distribution of the temperature damper 131, part of it flows through the warm air core 120, and the other part flows directly into the mixing chamber 130. After the temperature damper 131, the air flowing through the warm air core 120 mixes with the air that has not passed through the warm air core 120 in the mixing chamber 130, and then is blown out from each air outlet. Based on the law of conservation of energy, the mixing temperature T3, the outlet air temperature T1 of the evaporator core 110, the air volume m1 that has not passed through the warm air core, the outlet air temperature T2 of the warm air core, and the air volume m2 that has not passed through the warm air core satisfy the following relationship:

[0088]

[0089] Among them, C p Let H1 be the specific heat at constant pressure of air (the influence of temperature is ignored in this embodiment), H2 be the enthalpy of air that has not passed through the warm air core, α1 be the proportion of cold air, and α2 be the proportion of warm air. From equation (1.1), we can obtain that the factors affecting the mixed air temperature T3 are the outlet air temperature T1 of the evaporator core, the outlet air temperature T2 of the warm air core, and the proportion of warm air α2 (or the proportion of cold air α1). Since the outlet air temperature T1 of the evaporator core, the outlet air temperature T2 of the warm air core, and the air volume proportion have been obtained in the aforementioned steps, the mixed air temperature T3 can be calculated according to equation (1.1).

[0090] For example, if the air volume ratio is the warm air ratio α2, then step 204 includes, but is not limited to: calculating the cold air ratio α1 based on the warm air ratio α2; and calculating the mixed air temperature T3 based on the warm air ratio α2, the outlet air temperature T2 of the warm air core, the cold air ratio α1, and the outlet air temperature T1 of the evaporator core.

[0091] For example, the proportion of warm air α2 can be subtracted from 100% to obtain the proportion of cold air α1. The outlet air temperature T1 of the evaporator core is multiplied by the proportion of cold air α1, and the outlet air temperature T2 of the warm air core is multiplied by the proportion of warm air α2. The mixed air temperature T3 can be obtained by adding these two products.

[0092] If the airflow ratio is the warm air ratio, then step 204 includes, but is not limited to: calculating the warm air ratio based on the cold air ratio; and calculating the mixed air temperature based on the warm air ratio, the outlet air temperature of the warm air core, the cold air ratio, and the outlet air temperature of the warm air core. The calculation method can be referred to the foregoing and will not be repeated here.

[0093] Step 205: Calculate the outlet temperature of each air outlet based on the mixing temperature. The outlet temperature is the temperature of the air in the mixing chamber after flowing through the air outlet corresponding to the outlet.

[0094] For example, the outlet temperature of each air vent is related to the airflow of that air vent and the interior temperature T. w Related to the air mixing temperature T3, the outlet air temperature and air volume at the outlet, and the interior temperature T are obtained by fitting historical data. w The mapping relationship between the airflow at the outlet and the interior temperature T3 will affect the airflow at the outlet and the interior temperature T3. w The air outlet temperature is calculated by substituting the mixed air temperature T3 into the mapping relationship. The air volume of each air outlet is related to the total air intake and the air outlet mode (which determines the air volume allocation coefficient of each air outlet, which indicates the ratio of the air volume allocated to each air outlet to the total air volume).

[0095] In summary, in this embodiment, by obtaining the outlet air temperature of the evaporator core and the outlet air temperature of the heater core of the automotive air conditioner, the air volume ratio is obtained. Based on the air volume ratio, the outlet air temperature of the evaporator core and the outlet air temperature of the heater core, the mixed air temperature is calculated. Based on the mixed air temperature, the outlet air temperature of each air outlet is calculated. This achieves the calculation of the outlet air temperature without the need to install sensors at the air outlets, which reduces the manufacturing cost of the vehicle and reduces the reliability risks of the air conditioning control system.

[0096] Calculation of the outlet air temperature T1 of the evaporator core :

[0097] like Figure 1 As shown, the evaporator core 110 acts as a heat exchanger, realizing heat exchange between the refrigerant and the air. Its control process is to maintain its surface temperature T. e It reaches a stable state. Therefore, it can be simplified into a convective heat transfer model of air flowing through a isothermal solid wall. Its heat transfer satisfies:

[0098] Q evap =h·A e ·(T e -T0)=C p ·m·(T1-T0) (1.2)

[0099] We can obtain:

[0100] Among them, C pQ is the specific heat of air at constant pressure (the effect of temperature is ignored in the embodiments of this application). evap A is the total heat transfer of the evaporator core, h is the convective heat transfer coefficient, and A is the total heat transfer of the evaporator core. e The heat transfer area of ​​the evaporator core is given. The convective heat transfer coefficient h depends on the air velocity, which can be considered a constant in this embodiment. The specific heat of air at constant pressure, C... p and the heat exchange area A of the evaporator core e Since the air outlet temperature T1 of the evaporator core is a constant, the factors affecting the air outlet temperature T1 of the evaporator core can be considered as the surface temperature T of the evaporator core. e The temperature difference ΔT1 between the inlet air temperature T0 and the evaporator core, and the total inlet air volume m. Therefore, embodiments of this application provide a method for calculating the outlet air temperature of the evaporator core, which can accurately and precisely calculate the outlet air temperature of the evaporator core.

[0101] refer to Figure 3 It illustrates a flowchart of a method for calculating the outlet air temperature of an evaporator core provided in an exemplary embodiment of this application. This method can be... Figure 2 One optional implementation of step 201 in the embodiments is as follows: Figure 3 As shown, the method includes:

[0102] Step 2011: Calculate the air intake temperature of the evaporator core based on the position of the recirculation damper of the car air conditioner, the interior temperature, and the exterior temperature.

[0103] For example, as mentioned above, the proportion of outside air can be calculated by the position of the recirculation damper on the vehicle, and then based on the interior temperature T... w Outside temperature T o The inlet air temperature T0 of the evaporator core is calculated based on the proportion of external airflow. The position of the recirculation damper can be obtained by retrieving local data, and the interior temperature T... w and the outside temperature T o The methods for obtaining them are as described above and will not be repeated here.

[0104] For example, the vehicle stores a first mapping relationship, which is a mapping relationship between the position of the recirculation damper and the proportion of external airflow. The proportion of external airflow can be calculated based on the position of the recirculation damper using the first mapping relationship. Subtracting the proportion of external airflow from 100% yields the proportion of internal airflow (which indicates the ratio of airflow inside the vehicle to the total intake airflow). The vehicle's interior temperature T... w Multiply by the proportion of interior airflow, and calculate the exterior temperature T. o Multiply by the proportion of external air, and add the two products together to get the inlet air temperature T0 of the evaporator core.

[0105] Step 2012: Calculate the outlet air temperature of the evaporator core of the automotive air conditioner based on the inlet air temperature, surface temperature of the evaporator core, and total inlet air volume.

[0106] For example, as described above, the outlet air temperature T1 of the evaporator core is related to the inlet air temperature T0 of the evaporator core and the surface temperature T of the evaporator core. e The total air intake volume (m) is related to the evaporator core surface temperature (T) and can be calculated as follows: e The temperature difference ΔT1 between the surface temperature of the evaporator core and the inlet air temperature T0; the temperature difference ΔQ1 between the front and back of the evaporator core is calculated based on the surface temperature of the evaporator core and the temperature difference ΔT1 between the inlet air temperature of the evaporator core, and the total air volume m. The temperature difference ΔQ1 between the front and back of the evaporator core is used to indicate the temperature change of the air after it flows through the evaporator core (it is the variable on the right side of the equation (1.3)); the outlet air temperature T1 of the evaporator core is calculated based on the inlet air temperature T0 of the evaporator core and the temperature difference ΔQ1 between the front and back of the evaporator core (by substituting the inlet air temperature T0 of the evaporator core and the temperature difference ΔQ1 between the front and back of the evaporator core into equation (1.3), the outlet air temperature T1 of the evaporator core can be calculated). Among them, the surface temperature T0 of the evaporator core is... e The total air intake volume m can be obtained by retrieving local data (collected by the evaporation temperature sensor). The total air intake volume m can be obtained by actual measurement of the air volume of the whole vehicle (which is a constant value). The method for obtaining the air intake temperature T0 of the evaporation core can be referred to the above, and will not be repeated here.

[0107] For example, the vehicle stores a second mapping relationship, which is the mapping relationship between the front and rear temperature difference ΔQ1 of the evaporator core, the temperature difference ΔT1 between the surface temperature of the evaporator core and the air inlet temperature of the evaporator core, and the total air inlet volume m. After calculating the temperature difference ΔT1 between the surface temperature of the evaporator core and the air inlet temperature of the evaporator core, the front and rear temperature difference ΔQ1 of the evaporator core can be obtained by querying the second mapping relationship based on the temperature difference ΔT1 between the surface temperature of the evaporator core and the air inlet temperature of the evaporator core and the total air inlet volume m.

[0108] refer to Figure 4 This diagram illustrates data processing in a method for calculating the outlet air temperature of an evaporator core according to an exemplary embodiment of this application. The data within the dashed boxes are intermediate variables, the data within the thick solid boxes are input values, and the data within the thin solid boxes are calibration values. The symbol represents data multiplication. The symbol indicates the addition of data. The symbol indicates the subtraction of data, for example, such as Figure 4 As shown:

[0109] Based on the total air intake volume m and the position of the recirculation damper, the first mapping relationship is used to obtain the external air ratio. Subtracting the external air ratio from 100% yields the internal air ratio. The product of the outside temperature T0 and the external air ratio is then multiplied by the inside temperature T. w The inlet air temperature T0 of the evaporator core is obtained by multiplying the product by the internal air ratio and then adding the products. The surface temperature T of the evaporator core is then calculated. eThe temperature difference ΔT1 between the surface temperature of the evaporator core and the inlet air temperature T0 is obtained by querying the second mapping relationship based on the temperature difference ΔT1 between the surface temperature of the evaporator core and the inlet air temperature of the evaporator core, as well as the total air volume. The temperature difference ΔQ1 between the front and back of the evaporator core is then added to the inlet air temperature T0 of the evaporator core to obtain the outlet air temperature T1 of the evaporator core.

[0110] Calculation of the outlet air temperature T2 of the warm air core :

[0111] like Figure 1 As shown, the function of the heater core 120 is to heat the air flowing through it using heated coolant; it is a component for forced convection heat exchange between the coolant and air. Typically, vehicles do not have sensors at the inlet and outlet of the heater core 120 for temperature measurement, so it is impossible to use two fluid heat exchange models to calculate the outlet air temperature. To simplify the model, it is assumed that the surface temperature of the heater core 120 is constant and equal to its inlet coolant temperature; therefore, an airflow model through a constant-temperature wall can be used to calculate its outlet air temperature. Its heat exchange satisfies:

[0112] Q heat =h1·A h ·(T h -T1)=C p ·m2·(T2-T1) (1.4)

[0113] We can obtain:

[0114]

[0115] Among them, Q heat The total heat transfer of the heater core is given by A, where h1 is the convective heat transfer coefficient. h T represents the heat exchange area of ​​the heater core. h The surface temperature of the heater core (considered as its inlet water temperature in this embodiment) is the convective heat transfer coefficient h1, which depends on the air velocity and can be considered a constant in this embodiment. The specific heat at constant pressure is C. p and heat exchange area A h This is a constant value. Therefore, the factor affecting the outlet air temperature T2 of the heater core can be considered as the surface temperature of the heater core (the inlet water temperature of the heater core) T. h The present invention provides a method for calculating the outlet temperature of a heater core, which can accurately and precisely calculate the outlet temperature of the heater core, and the inlet air temperature of the heater core is ΔT2.

[0116] refer to Figure 5 It illustrates a flowchart of a method for calculating the outlet air temperature of an evaporator core provided in an exemplary embodiment of this application. This method can be...Figure 2 One optional implementation of step 202 in the embodiments is as follows: Figure 5 As shown, the method includes:

[0117] Step 2021: Calculate the front and rear temperature difference of the warm air core based on the outlet air temperature of the evaporator core, the inlet water temperature of the warm air core, and the inlet air volume of the warm air core. The front and rear temperature difference of the warm air core is used to indicate the temperature change of the air after it flows through the warm air core.

[0118] For example, step 2021 includes, but is not limited to: calculating the warm air ratio α2 based on the position of the temperature damper and the mode damper; calculating the air intake volume m2 of the warm air core based on the total air intake volume m and the warm air ratio α2; and calculating the inlet water temperature T of the warm air core. h The temperature difference ΔT2 between the outlet air temperature T1 of the evaporator core and the inlet water temperature T of the heater core; h The temperature difference ΔT2 between the inlet air temperature of the evaporator core and the inlet air volume m2 of the heater core are used to calculate the front and rear temperature difference ΔQ2 of the heater core. The front and rear temperature difference of the heater core is used to indicate the temperature change of the air after it flows through the heater core (it is the variable on the right side of equation (1.5)). The position of the mode damper is defined by the air outlet mode. Since the relationship between the flow field change inside the air conditioning unit and the position of the temperature damper is not linear, the actual air volume ratio does not completely correspond to the position of the temperature damper. Therefore, in this embodiment, the heater ratio calculated based on the position of the temperature damper and the position of the mode damper has higher accuracy and precision.

[0119] For example, the vehicle stores a third mapping relationship and a fourth mapping relationship. The third mapping relationship is the front-to-rear temperature difference ΔQ2 of the heater core and the inlet water temperature of the heater core (which can be regarded as its surface temperature) T. h The mapping relationship between the temperature difference ΔT2 of the inlet air temperature of the heater core and the inlet air volume m2 of the heater core; the fourth mapping relationship is the mapping relationship between the heater proportion and the positions of the temperature damper and the mode damper. The heater proportion α2 can be obtained by querying the fourth mapping relationship based on the positions of the temperature damper and the mode damper. Multiplying the total inlet air volume m by the heater proportion α2 gives the inlet air volume m2 of the heater core. Calculate the inlet water temperature T of the heater core. h The temperature difference ΔT2 between the inlet water temperature of the heater core and the outlet air temperature of the evaporator core is obtained by querying the third mapping relationship based on the temperature difference ΔT2 between the inlet water temperature of the heater core and the outlet air temperature of the evaporator core, as well as the inlet air volume m2 of the heater core.

[0120] Among them, the inlet water temperature T of the heater core hIt can be approximated to the outlet water temperature of the positive temperature coefficient (PTC) heater on the vehicle or the thermostat temperature of the engine. The inlet air temperature of the heater core is equal to the outlet air temperature T1 of the evaporator core. The method for obtaining the inlet air volume m2 of the heater core can be referred to the above, and will not be repeated here.

[0121] Step 2022: Calculate the outlet temperature of the warm air core based on the outlet temperature of the evaporator core and the temperature difference between the front and rear of the warm air core.

[0122] For example, after calculating the temperature difference ΔQ2 between the front and back of the heating core, the outlet temperature T1 of the evaporator core and the temperature difference ΔQ2 between the front and back of the heating core can be substituted into equation (1.5) to calculate the outlet temperature T2 of the heating core.

[0123] Considering that the aforementioned method for calculating the outlet air temperature T2 of the heater core simplifies the impact of the coolant on the heater core, in order to calculate the outlet air temperature T2 of the heater core more accurately, it is necessary to introduce the coolant flow rate m of the heater core. c The temperature is corrected, and in this case, the outlet air temperature T2 of the heater core calculated in the above steps is the outlet air temperature T2' of the heater core before correction. Therefore, step 2022 includes, but is not limited to: calculating the outlet air temperature T2' of the heater core before correction based on the outlet air temperature T1 of the evaporator core and the temperature difference ΔQ2 between the front and rear of the heater core; and calculating the outlet air temperature T2' of the heater core based on the coolant flow rate m... c The outlet air temperature T2' of the original heater core is corrected to obtain the outlet air temperature T2 of the heater core.

[0124] For example, the vehicle stores a fifth mapping relationship, which is a correction factor and coolant flow rate m. c The mapping relationship between them can be determined based on the coolant flow rate m. c The correction coefficient is obtained by querying the fifth mapping relationship. The correction coefficient is then multiplied by the original outlet air temperature T2' of the warm air core to obtain the outlet air temperature T2 of the warm air core.

[0125] refer to Figure 6 This diagram illustrates data processing in a method for calculating the outlet air temperature of a heater core according to an exemplary embodiment of this application. The data within the dashed boxes are intermediate variables, the data within the thick solid boxes are input values, and the data within the thin solid boxes are calibration values. The symbol represents data multiplication. The symbol indicates the addition of data. The symbol indicates the subtraction of data, for example, such as Figure 6 As shown:

[0126] Based on the positions of the temperature damper and the mode damper, the fourth mapping relationship is used to obtain the warm air ratio α2. The total air intake m is multiplied by the warm air ratio α2 to obtain the air intake m2 of the warm air core. The inlet water temperature T of the warm air core is then calculated. h The temperature difference ΔT2 between the evaporator core's outlet air temperature and the evaporator core's outlet air temperature is used. Based on the temperature difference ΔT2 between the inlet water temperature of the heater core and the evaporator core's outlet air temperature, and the inlet air volume m2 of the heater core, the temperature difference ΔQ2 between the front and rear of the heater core is obtained by consulting the third mapping relationship. The outlet air temperature T1 of the evaporator core is added to the temperature difference ΔQ2 between the front and rear of the heater core to obtain the outlet air temperature T2' of the heater core before correction. Based on the coolant flow rate m of the heater core... c The correction coefficient is obtained by querying the fifth mapping relationship. The outlet air temperature T2' of the warm air core before correction is multiplied by the correction coefficient to obtain the outlet air temperature T2 of the warm air core.

[0127] Calculation of the outlet air temperature T4 :

[0128] like Figure 1 As shown, the air, after being mixed in the mixing chamber 130 by the evaporator core 110 and the heater core 120, flows through different air outlets and is blown out from the corresponding air outlets (first air outlet 1301, second air outlet 1302, and third air outlet 1303). During the airflow through the air outlets, convective heat transfer occurs, resulting in temperature loss, manifested as a temperature difference between the mixed air temperature T3 and the outlet air temperature T4. The air outlets of the air conditioning unit are installed inside the passenger compartment, and the surface temperature of the air outlets can be considered as the interior temperature T. w The temperature loss in the air outlet duct is:

[0129]

[0130] The calculation yielded:

[0131] Among them, Q duct h2 is the temperature loss of the air outlet duct, h2 is the convective heat transfer coefficient, and A is the temperature loss of the air outlet duct. d The heat exchange area of ​​the air duct is considered as the surface temperature of the vehicle interior, T. w m duct This represents the airflow through the outlet duct. The convective heat transfer coefficient h2 depends on the air velocity, and the specific heat at constant pressure C... p and heat exchange area A d This is a constant. Therefore, the factor affecting the outlet air temperature T4 can be considered as the outlet air volume m. duct And the surface temperature of the air duct (interior temperature) T w The temperature difference ΔT3 between the mixed air temperature T3 and the air temperature T3. Therefore, embodiments of this application provide a method for calculating the outlet air temperature of an automotive air conditioner, which can accurately and precisely calculate the outlet air temperature.

[0132] refer toFigure 7 It illustrates a flowchart of a method for calculating the outlet air temperature of an automotive air conditioner according to an exemplary embodiment of this application. This method can be... Figure 2 One optional implementation of step 205 in the embodiments is as follows: Figure 7 As shown, the method includes:

[0133] Step 2051: Obtain the air volume of each air outlet.

[0134] For example, the air volume of each air outlet can be calculated based on the total air intake volume m and the air volume distribution coefficient of each air outlet. The air volume distribution coefficient indicates the ratio of the air volume allocated to each air outlet to the total air volume. The following example illustrates step 2051 using an air conditioning unit equipped with three air outlets: a first air outlet, a second air outlet, and a third air outlet.

[0135] For example, the vehicle stores a sixth mapping relationship, a seventh mapping relationship, and an eighth mapping relationship. The sixth mapping relationship is the mapping relationship between the position of the mode damper and the air volume distribution coefficient of the first air outlet (hereinafter referred to as air volume distribution coefficient 1). The seventh mapping relationship is the mapping relationship between the position of the mode damper and the air volume distribution coefficient of the second air outlet (hereinafter referred to as air volume distribution coefficient 2). The eighth mapping relationship is the mapping relationship between the position of the mode damper and the air volume distribution coefficient of the third air outlet (hereinafter referred to as air volume distribution coefficient 3). The air volume distribution coefficient 1, air volume distribution coefficient 2, and air volume distribution coefficient 3 can be obtained by querying the sixth, seventh, and eighth mapping relationships according to the position of the mode damper. The total air intake volume m is multiplied by the air volume distribution coefficient 1, air volume distribution coefficient 2, and air volume distribution coefficient 3 respectively to obtain the air volume of the first air outlet, the air volume of the second air outlet, and the air volume of the third air outlet.

[0136] Step 2052: Calculate the outlet temperature of each air outlet based on the interior temperature, the mixed air temperature, and the air volume of each air outlet.

[0137] For example, step 2052 includes, but is not limited to: based on the vehicle interior temperature T w The duct temperature loss of each air outlet is calculated based on the mixed air temperature T3 and the air volume of each outlet; the outlet temperature of each air outlet is calculated based on the mixed air temperature and the duct temperature loss of each outlet. The duct temperature loss indicates the temperature change of air flowing through the outlet duct. Step 2052 will be illustrated below using an air conditioning unit equipped with three outlets: a first outlet, a second outlet, and a third outlet.

[0138] For example, the vehicle stores the ninth, tenth, and eleventh mapping relationships. The ninth mapping relationship is the mapping relationship between the duct temperature loss △Q3(1) of the first air outlet, the temperature difference △T3 between the vehicle interior temperature and the mixed air temperature, and the air volume of the first air outlet. The tenth mapping relationship is the mapping relationship between the duct temperature loss △Q3(2) of the second air outlet, the temperature difference △T3 between the vehicle interior temperature and the mixed air temperature, and the air volume of the second air outlet. The eleventh mapping relationship is the mapping relationship between the duct temperature loss △Q3(3) of the third air outlet, the temperature difference △T3 between the vehicle interior temperature and the mixed air temperature, and the air volume of the third air outlet. After calculating the vehicle interior temperature T... w After determining the temperature difference ΔT3 between the vehicle interior temperature and the mixed air temperature, the duct temperature loss ΔQ3 of the first air outlet is obtained by querying the ninth mapping relationship based on the temperature difference ΔT3 between the vehicle interior temperature and the mixed air temperature and the air volume of the first air outlet (1). The duct temperature loss ΔQ3 of the second air outlet is obtained by querying the tenth mapping relationship based on the temperature difference ΔT3 between the vehicle interior temperature and the mixed air temperature and the air volume of the second air outlet (2). The duct temperature loss ΔQ3 of the second air outlet is obtained by querying the eleventh mapping relationship based on the temperature difference ΔT3 between the vehicle interior temperature and the mixed air temperature and the air volume of the third air outlet. The relationship is used to obtain the duct temperature loss △Q3(3) of the first air outlet. The difference between the mixed air temperature T3 and the duct temperature loss △Q3(1) of the first air outlet is calculated to obtain the air outlet temperature T4(1). The difference between the mixed air temperature T3 and the duct temperature loss △Q3(2) of the second air outlet is calculated to obtain the air outlet temperature T4(2). The difference between the mixed air temperature T3 and the duct temperature loss △Q3(3) of the third air outlet is calculated to obtain the air outlet temperature T4(3).

[0139] refer to Figure 8 This diagram illustrates data processing in a method for calculating the outlet air temperature of an automotive air conditioner according to an exemplary embodiment of this application. The data within the dashed boxes are intermediate variables, the data within the thick solid boxes are input quantities, the data within the thin solid boxes are calibration quantities, and the data within the gray boxes are output quantities. The symbol represents data multiplication. The symbol indicates the addition of data. The symbol indicates the subtraction of data, for example, such as Figure 8 As shown:

[0140] Based on the positions of the temperature damper and the mode damper, the fourth mapping relationship is used to obtain the warm air ratio α2. Subtracting the warm air ratio α2 from 100% gives the cold air ratio α1. The product of the warm air core outlet temperature T2 multiplied by the warm air ratio α2 and the product of the evaporator core outlet temperature T1 multiplied by the cold air ratio α1 is added to obtain the mixed air temperature T3.

[0141] Calculate the air mixing temperature T3 and the interior temperature T. wThe temperature difference △T3, according to the position of the mode damper, query the sixth mapping relationship to obtain the air volume distribution coefficient 1, according to the position of the mode damper, query the seventh mapping relationship to obtain the air volume distribution coefficient 2, according to the position of the mode damper, query the eighth mapping relationship to obtain the air volume distribution coefficient 3, multiply the total air intake m by the air volume distribution coefficient 1 to obtain the air volume of the first air outlet, multiply the total air intake m by the air volume distribution coefficient 2 to obtain the air volume of the second air outlet, multiply the total air intake m by the air volume distribution coefficient 3 to obtain the air volume of the third air outlet, according to the temperature difference △T3 between the vehicle interior temperature and the mixed air temperature and the air volume of the first air outlet, query the ninth mapping relationship to obtain the duct temperature loss △Q3 of the first air outlet (1), according to the temperature difference △T3 between the vehicle interior temperature and the mixed air temperature The airflow of the second air outlet is obtained by querying the ninth mapping relationship based on T3 and the airflow of the second air outlet. The airflow of the third air outlet is obtained by querying the ninth mapping relationship based on the temperature difference between the vehicle interior temperature and the mixed air temperature △T3 and the airflow of the third air outlet. The airflow of the third air outlet is obtained by querying the ninth mapping relationship based on T3 and the airflow of the first air outlet. The airflow temperature of the first air outlet is obtained by calculating the difference between the mixed air temperature T3 and the airflow temperature loss of the first air outlet △Q3(1). The airflow temperature of the second air outlet is obtained by calculating the difference between the mixed air temperature T3 and the airflow temperature loss of the second air outlet △Q3(2). The airflow temperature of the third air outlet is obtained by calculating the difference between the mixed air temperature T3 and the airflow temperature loss of the third air outlet △Q3(3).

[0142] refer to Figure 9 This illustrates a block diagram of a computer device provided in an exemplary embodiment of this application, which may be the control device provided in the above embodiments. Figure 9 As shown, the computer device includes a processor 910 and a memory 920.

[0143] Processor 910 may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP. Processor 910 may further include hardware chips. These hardware chips may be application-specific integrated circuits (ASICs), programmable logic devices (PLDs), or combinations thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), generic array logic (GAL), or any combination thereof.

[0144] The memory 920 is connected to the processor 910 via a bus or other means. The memory 920 stores at least one instruction, at least one program, code set, or instruction set. The processor 910 loads and executes the aforementioned instruction, program, code set, or instruction set to implement the method for calculating the air outlet temperature of an automotive air conditioner as provided in any of the above embodiments. The memory 920 can be volatile memory, non-volatile memory, or a combination thereof. Volatile memory can be random-access memory (RAM), such as static random-access memory (SRAM) or dynamic random-access memory (DRAM). Non-volatile memory can be read-only memory (ROM), such as programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), or electrically erasable programmable read-only memory (EEPROM). Non-volatile memory can also be flash memory, magnetic storage such as magnetic tape, floppy disk, and hard disk. Non-volatile memory can also be optical disc.

[0145] This application also provides a vehicle equipped with Figure 9 The computer equipment shown.

[0146] This application also provides a computer-readable storage medium storing at least one instruction, at least one program, code set, or instruction set, wherein the at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by the processor to implement the method for calculating the air outlet temperature of an automotive air conditioner as described in any of the above embodiments.

[0147] This application also provides a computer program product that, when run on a computer, causes the computer to execute the method for calculating the air outlet temperature of an automobile air conditioner provided in the above-described method embodiments.

[0148] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A method for calculating the outlet air temperature of an automotive air conditioner, characterized in that, include: The outlet air temperature of the evaporator core of the car air conditioner is obtained, wherein the outlet air temperature of the evaporator core is the temperature of the air entering the car air conditioner after flowing through the evaporator core; The outlet air temperature of the heating core of the car air conditioner is obtained. The outlet air temperature of the heating core is the temperature of the air flowing out of the evaporator core after passing through the heating core. The air volume ratio is obtained, which is either the warm air ratio or the cold air ratio. The warm air ratio is used to indicate the ratio of the air volume flowing through the warm air core to the total air volume. The cold air ratio is used to indicate the ratio of the air volume that does not pass through the warm air core to the total air volume. The total air volume is the air volume entering the evaporator core. The mixed air temperature is calculated based on the air volume ratio, the air outlet temperature of the evaporator core, and the air outlet temperature of the heater core. The mixed air temperature is used to indicate the temperature of the air after it is mixed in the mixing chamber of the car air conditioner, passing through the evaporator core and the heater core. The outlet temperature of each air outlet is calculated based on the mixed air temperature. The outlet temperature is the temperature of the air in the mixed air chamber after flowing through the air outlet corresponding to the outlet.

2. The method according to claim 1, characterized in that, The calculation of the outlet air temperature for each outlet based on the mixed air temperature includes: Obtain the air volume of each air outlet; The air outlet temperature of each air outlet is calculated based on the interior temperature, the mixed air temperature, and the air volume of each air outlet.

3. The method according to claim 2, characterized in that, The process of obtaining the air volume of each air outlet includes: The air volume of each air outlet is calculated based on the total air intake volume and the air volume distribution coefficient of each air outlet. The air volume distribution coefficient is used to indicate the ratio of the air volume allocated to each air outlet to the total air volume.

4. The method according to claim 3, characterized in that, The step of calculating the outlet temperature of each air vent based on the vehicle interior temperature, the mixed air temperature, and the air volume of each air vent includes: The duct temperature loss of each air outlet is calculated based on the in-vehicle temperature, the mixed air temperature, and the air volume of each air outlet. The outlet temperature of each air outlet is calculated based on the mixed air temperature and the duct temperature loss of each air outlet.

5. The method according to claim 4, characterized in that, The step of calculating the outlet temperature of each air outlet based on the mixed air temperature and the duct temperature loss of each air outlet includes: For any air outlet, the outlet air temperature is obtained by calculating the difference between the mixed air temperature and the duct temperature loss of the air outlet.

6. The method according to claim 1, characterized in that, The acquisition of air volume percentage includes: The proportion of warm air is calculated based on the positions of the temperature damper and the mode damper.

7. The method according to claim 6, characterized in that, The calculation of the mixed air temperature based on the air volume ratio, the outlet air temperature of the evaporator core, and the outlet air temperature of the heater core includes: The proportion of cold air is calculated based on the proportion of warm air. The mixed air temperature is calculated based on the warm air ratio, the outlet temperature of the warm air core, the cold air ratio, and the outlet temperature of the warm air core.

8. The method according to claim 1, characterized in that, The acquisition of air volume percentage includes: The proportion of cold air is calculated based on the positions of the temperature damper and the mode damper.

9. The method according to claim 8, characterized in that, The calculation of the mixed air temperature based on the air volume ratio, the outlet air temperature of the evaporator core, and the outlet air temperature of the heater core includes: The proportion of warm air is calculated based on the proportion of cold air. The mixed air temperature is calculated based on the warm air ratio, the outlet temperature of the warm air core, the cold air ratio, and the outlet temperature of the warm air core.

10. The method according to any one of claims 1 to 9, characterized in that, The process of obtaining the outlet air temperature of the evaporator core of the automotive air conditioner includes: The air inlet temperature of the evaporator core is calculated based on the position of the recirculation damper of the car air conditioner, the interior temperature, and the exterior temperature. The outlet air temperature of the evaporator core of the automotive air conditioner is calculated based on the inlet air temperature of the evaporator core, the surface temperature of the evaporator core, and the total inlet air volume.

11. The method according to claim 10, characterized in that, The calculation of the air intake temperature of the evaporator core based on the position of the recirculation damper of the vehicle's air conditioning system, the interior temperature, and the exterior temperature includes: The external air ratio is calculated based on the position of the circulating air damper. The external air ratio is used to indicate the ratio of the air volume entering from outside the vehicle to the total air volume. The air inlet temperature of the evaporator core is calculated based on the in-vehicle temperature, the outside temperature, and the proportion of outside air.

12. The method according to claim 11, characterized in that, The calculation of the outlet air temperature of the automotive air conditioner's evaporator core based on the inlet air temperature of the evaporator core, the surface temperature of the evaporator core, and the total inlet air volume includes: Calculate the temperature difference between the surface temperature of the evaporator core and the inlet air temperature of the evaporator core; The front and back temperature difference of the evaporator core is calculated based on the temperature difference between the surface temperature of the evaporator core and the inlet air temperature of the evaporator core, as well as the total inlet air volume. The front and back temperature difference of the evaporator core is used to indicate the temperature change of the air after it flows through the evaporator core. The outlet temperature of the evaporator core is calculated based on the inlet air temperature of the evaporator core and the temperature difference between the front and back of the evaporator core.

13. The method according to any one of claims 1 to 9, characterized in that, The step of obtaining the outlet air temperature of the heating core of the automotive air conditioner includes: The front and rear temperature difference of the heating core is calculated based on the outlet air temperature of the evaporator core, the inlet water temperature of the heating core, and the inlet air volume of the heating core. The front and rear temperature difference of the heating core is used to indicate the temperature change of the air after it flows through the heating core. The outlet temperature of the heating core is calculated based on the outlet temperature of the evaporator core and the temperature difference between the front and rear of the heating core.

14. The method according to claim 13, characterized in that, The step of calculating the outlet temperature of the heating core based on the outlet temperature of the evaporator core and the temperature difference between the front and rear of the heating core includes: The original outlet temperature of the warm air core is calculated based on the outlet temperature of the evaporator core and the temperature difference before and after the warm air core. The outlet air temperature of the heater core is corrected based on the coolant flow rate of the heater core to obtain the outlet air temperature of the heater core.

15. The method according to claim 14, characterized in that, The step of calculating the temperature difference before and after the heating core based on the outlet air temperature of the evaporator core, the inlet water temperature of the heating core, and the inlet air volume of the heating core includes: The proportion of warm air is calculated based on the positions of the temperature damper and the mode damper. The air intake volume of the heating core is calculated based on the total air intake volume and the proportion of warm air. Calculate the temperature difference between the inlet water temperature of the heater core and the outlet air temperature of the evaporator core; The temperature difference between the front and back of the heater core is calculated based on the temperature difference between the inlet water temperature of the heater core and the outlet air temperature of the evaporator core, as well as the air volume of the heater core.

16. A computer device, characterized in that, The computer device includes a processor and a memory, the memory storing at least one instruction or program, the instruction or program being loaded and executed by the processor to implement the method for calculating the air outlet temperature of an automotive air conditioner as described in any one of claims 1 to 15.

17. A vehicle, characterized in that, The vehicle is equipped with the computer equipment as described in claim 16.

18. A computer-readable storage medium, characterized in that, The storage medium stores at least one instruction, which is loaded and executed by a processor to implement the method for calculating the air outlet temperature of an automotive air conditioner as described in any one of claims 1 to 15.

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