A vehicle temperature control method and device

Abstract

This application provides a vehicle temperature control method and device. The method includes: collecting the ambient temperature and interior temperature of a target vehicle; determining whether the ambient temperature is within a preset ambient temperature threshold range; if the ambient temperature is within the threshold range, determining the circulation mode of the air conditioning heat pump system in the target vehicle based on the ambient temperature and interior temperature; when the circulation mode is cooling mode, determining whether the opening of the air conditioning mixing damper in the target vehicle is at full heat opening; if the opening of the air conditioning mixing damper is at full heat opening, determining whether the mixing damper needs to be adjusted; if the mixing damper needs to be adjusted, controlling the air conditioning heat pump system to increase the internal circulation ratio according to a preset internal circulation increase algorithm. It is evident that this method and device can improve the stability and continuity of the outlet air temperature adjustment of the heat pump air conditioning system by controlling the outlet air temperature, thus avoiding the problem of outlet air temperature gaps.

Description

Technical Field

[0001] This application relates to the field of thermal management technology, and more specifically, to a vehicle temperature control method and device. Background Technology

[0002] Currently, thermal management is the process of regulating and controlling the temperature or temperature difference of an object using heating or cooling methods according to its specific requirements. Existing vehicle temperature control methods typically use direct heat pump systems. Since the heat released by the built-in condenser comes from the heat absorbed by the evaporator and plate heat exchanger, plus the compressor power, the cold and heat sources of the direct heat pump are coupled. Therefore, the outlet air temperature of the direct heat pump is limited by the regulation of the mixing damper, leading to the risk of discontinuous outlet air temperature. This means that some required outlet air temperatures cannot be achieved; they may be too high or too low, creating an outlet air temperature gap. It is evident that existing vehicle temperature control methods are prone to outlet air temperature gaps, thus reducing the stability and continuity of air temperature regulation. Summary of the Invention

[0003] The purpose of this application is to provide a vehicle temperature control method and device that can avoid the problem of outlet temperature gaps by controlling the outlet temperature, thereby improving the stability of the outlet temperature and the continuity of its adjustment in the heat pump air conditioning system.

[0004] The first aspect of this application provides a vehicle temperature control method, including:

[0005] Collect the ambient temperature and interior temperature of the target vehicle;

[0006] Determine whether the ambient temperature is within the preset ambient temperature threshold range;

[0007] If the ambient temperature is within the ambient temperature threshold range, then the circulation mode of the air conditioning heat pump system on the target vehicle is determined based on the ambient temperature and the vehicle interior temperature.

[0008] When the cycle mode is cooling mode, determine whether the air conditioning mixing damper opening of the target vehicle is the full heat opening.

[0009] If the air conditioning mixing damper opening is the full heat opening, then determine whether the mixing damper needs to be adjusted;

[0010] If it is necessary to adjust the mixing damper, the air conditioning heat pump system will be controlled to increase the internal circulation ratio according to the preset internal circulation increase algorithm.

[0011] Further, determining the circulation mode of the air conditioning heat pump system in the target vehicle based on the ambient temperature and the vehicle interior temperature includes:

[0012] The target air outlet temperature is calculated based on the ambient temperature, the vehicle interior temperature, and the preset temperature.

[0013] The circulation mode of the air conditioning heat pump system on the target vehicle is determined based on the ambient temperature and the target air outlet temperature.

[0014] Furthermore, the determination of whether the mixing damper needs to be adjusted includes:

[0015] Obtain the actual outlet air temperature of the mixing damper in the air conditioning heat pump system;

[0016] The outlet temperature difference is calculated based on the preset target outlet temperature and the actual outlet temperature.

[0017] Determine whether the outlet air temperature difference is less than a preset outlet air temperature threshold;

[0018] If so, it is determined that the mixing damper needs to be adjusted, and the internal circulation ratio of the air conditioning heat pump system is increased according to the preset internal circulation increase algorithm.

[0019] Furthermore, the method also includes:

[0020] Determine whether the air conditioning heat pump system has achieved full internal circulation;

[0021] If the air conditioning heat pump system has already achieved full internal circulation, determine whether electric drive cooling is required;

[0022] If electric cooling is not required, the air conditioning heat pump system is controlled to close the active intake grille.

[0023] Furthermore, the air conditioning heat pump system includes an external heat exchanger, a cooling fan, a first solenoid valve, a second solenoid valve, a gas-liquid separator, a first electronic expansion valve, a second electronic expansion valve, a plate heat exchanger, a water PTC, a water pump, an air conditioning unit, a compressor, and water circuit components; wherein, the air conditioning unit includes a wind PTC, a built-in condenser, the mixing damper, an evaporator, and a blower.

[0024] A second aspect of this application provides a vehicle temperature control device, the vehicle temperature control device comprising:

[0025] The data acquisition unit is used to collect the ambient temperature and interior temperature of the target vehicle.

[0026] The first judgment unit is used to determine whether the ambient temperature is within a preset ambient temperature threshold range;

[0027] The determining unit is configured to determine the circulation mode of the air conditioning heat pump system on the target vehicle based on the ambient temperature and the vehicle interior temperature when the ambient temperature is within the ambient temperature threshold range.

[0028] The second judgment unit is used to determine whether the air conditioning mixing damper opening of the target vehicle is the full heat opening when the cycle mode is the cooling mode.

[0029] The third judgment unit is used to determine whether the air conditioning mixing damper needs to be adjusted when the air conditioning mixing damper opening is the full heat opening.

[0030] The control unit is used to control the air conditioning heat pump system to increase the internal circulation ratio according to a preset internal circulation increase algorithm when the mixing damper needs to be adjusted.

[0031] Furthermore, the determining unit includes:

[0032] The first calculation subunit is used to calculate the target air outlet temperature based on the ambient temperature, the vehicle interior temperature, and a preset temperature when the ambient temperature is within the ambient temperature threshold range.

[0033] The first determining subunit is used to determine the circulation mode of the air conditioning heat pump system on the target vehicle based on the ambient temperature and the target air outlet temperature.

[0034] Furthermore, the third judgment unit includes:

[0035] The acquisition subunit is used to acquire the actual air outlet temperature of the air mixing damper in the air conditioning heat pump system when the opening degree of the air conditioning mixing damper is the full heat opening degree.

[0036] The second calculation subunit is used to calculate the air outlet temperature difference based on the preset target air outlet temperature and the actual air outlet temperature.

[0037] The judgment subunit is used to determine whether the outlet air temperature difference is less than a preset outlet air temperature threshold.

[0038] The second determining subunit is used to determine that the mixing damper needs to be adjusted when the outlet air temperature difference is less than the preset outlet air temperature threshold, and to trigger the control unit to control the air conditioning heat pump system to increase the internal circulation ratio according to the preset internal circulation increase algorithm.

[0039] Furthermore, the vehicle temperature control device also includes:

[0040] The fourth judgment unit is used to determine whether the air conditioning heat pump system has reached full internal circulation;

[0041] The fourth judgment unit is also used to determine whether electric drive cooling is required when the air conditioning heat pump system has reached full internal circulation.

[0042] The control unit is also used to control the air conditioning heat pump system to close the active air intake grille when electric cooling is not required.

[0043] Furthermore, the air conditioning heat pump system includes an external heat exchanger, a cooling fan, a first solenoid valve, a second solenoid valve, a gas-liquid separator, a first electronic expansion valve, a second electronic expansion valve, a plate heat exchanger, a water PTC, a water pump, an air conditioning unit, a compressor, and water circuit components; wherein, the air conditioning unit includes a wind PTC, a built-in condenser, the mixing damper, an evaporator, and a blower.

[0044] A third aspect of this application provides an electronic device including a memory and a processor, the memory storing a computer program and the processor running the computer program to cause the electronic device to perform the vehicle temperature control method described in any one of the first aspects of this application.

[0045] The fourth aspect of this application provides a computer-readable storage medium storing computer program instructions, which, when read and executed by a processor, perform the vehicle temperature control method described in any one of the first aspects of this application.

[0046] The beneficial effects of this application are: the method and apparatus can avoid the problem of outlet air temperature gaps by controlling the outlet air temperature, thereby improving the stability of the outlet air temperature and the continuity of vertical adjustment of the heat pump air conditioning system. Attached Figure Description

[0047] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 A schematic flowchart of a vehicle temperature control method provided in an embodiment of this application;

[0049] Figure 2 A schematic flowchart of another vehicle temperature control method provided in an embodiment of this application;

[0050] Figure 3 This is a schematic diagram of the structure of a vehicle temperature control device provided in an embodiment of this application;

[0051] Figure 4 This is a schematic diagram of another vehicle temperature control device provided in an embodiment of this application;

[0052] Figure 5A schematic diagram of the architecture of an air conditioning heat pump system provided in this application embodiment;

[0053] Figure 6 This diagram illustrates the effect of switching between internal and external air circulation and closing the active air intake grille on the outlet air temperature boundary, as provided in an embodiment of this application. Detailed Implementation

[0054] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0055] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0056] Example 1

[0057] Please refer to Figure 1 , Figure 1 This is a flowchart illustrating a vehicle temperature control method provided in this embodiment. The vehicle temperature control method includes:

[0058] S101. Collect the ambient temperature and interior temperature of the target vehicle.

[0059] S102. Determine whether the ambient temperature is within the preset ambient temperature threshold range. If yes, proceed to step S103; otherwise, end the process.

[0060] S103. Determine the circulation mode of the air conditioning heat pump system on the target vehicle based on the ambient temperature and the interior temperature.

[0061] In this embodiment, the air conditioning heat pump system includes an external heat exchanger, a cooling fan, a first solenoid valve, a second solenoid valve, a gas-liquid separator, a first electronic expansion valve, a second electronic expansion valve, a plate heat exchanger, a water PTC, a water pump, an air conditioning unit, a compressor, and water circuit components; wherein, the air conditioning unit includes a wind PTC, a built-in condenser, a mixing damper, an evaporator, and a blower.

[0062] S104. When the circulation mode is cooling mode, determine whether the air conditioning mixing damper opening on the target vehicle is at full heat opening. If yes, proceed to step S105; otherwise, end this process.

[0063] S105. Determine whether the mixing damper needs to be adjusted. If yes, proceed to step S106; otherwise, end the process.

[0064] S106. Control the air conditioning heat pump system to increase the internal circulation ratio according to the preset internal circulation increase algorithm.

[0065] Please refer to Figure 5 , Figure 5 A schematic diagram of an air conditioning heat pump system is shown. The main operating modes of this air conditioning heat pump system are as follows:

[0066] (1) Cooling mode: Solenoid valve 1 is open, solenoid valve 2 is closed, and the refrigerant flows through the compressor → built-in condenser → external heat exchanger → electronic expansion valve 1 → evaporator → gas-liquid separator → compressor. In this mode, the air outlet temperature can be adjusted to a certain extent by adjusting the mixing damper;

[0067] (2) Cooling and dehumidification mode: Solenoid valve 1 is closed, solenoid valve 2 is open, and the refrigerant flows through the compressor → built-in condenser → electronic expansion valve 1 → evaporator → gas-liquid separator → compressor. In this mode, the mixing damper is generally fixed on the total heat side;

[0068] (3) Heat pump mode: Solenoid valve 1 is closed, solenoid valve 2 is open, and the refrigerant flows through the compressor → built-in condenser → electronic expansion valve 2 → Chiller (air conditioner) → gas-liquid separator → compressor. In this mode, the mixing damper is generally fixed on the total heat side.

[0069] Based on the experimental results of the above-mentioned air conditioning heat pump system, it is known that, without turning on the air PTC, there is a gap of 2 to 8°C in the outlet air temperature between the cooling mode and the cooling dehumidification mode in an ambient temperature range of 10 to 30°C.

[0070] The method described in this application can detect when the ambient temperature is within a certain range (typical operating conditions in spring and autumn, ambient temperature ∈ [10,25]), and when it is determined that there is a gap in the air conditioner's outlet air temperature, the upper limit of the outlet air temperature in the cooling mode can be increased by closing the active air intake grille and switching the internal circulation / mixing a certain proportion of internal air, thereby achieving the effect of reducing or eliminating the outlet air temperature gap.

[0071] As can be seen, this method eliminates the need for a fan-driven PTC for heat replenishment in both cooling and dehumidification operations, thus simplifying the process. Figure 5 The PTC in the air reduces the cost of the thermal management system.

[0072] In this embodiment, the subject executing the method can be a computing device such as a computer or server, and no limitation is made in this embodiment.

[0073] In this embodiment, the subject executing the method can also be a smart device such as a smartphone or tablet, and no limitation is made in this embodiment.

[0074] As can be seen, implementing the vehicle temperature control method described in this embodiment can reduce the cost of the thermal management system by eliminating the need for air PTC to supplement heat during cooling and dehumidification. Simultaneously, it can increase the upper limit of the cooling mode outlet air temperature by 7-8°C after switching to recirculation without closing the active grille shutter, creating a larger overlap between the upper limit of the cooling mode outlet air temperature and the lower limit of the cooling / dehumidification mode outlet air temperature, thereby reducing the impact of the outlet air temperature gap. Furthermore, when the active grille shutter is subsequently closed, the upper limit of the cooling mode outlet air temperature can be further increased to 55-62°C, significantly increasing the overlap between the upper limit of the cooling mode outlet air temperature and the lower limit of the cooling / dehumidification mode outlet air temperature, thus completely eliminating the impact of the outlet air temperature gap.

[0075] Example 2

[0076] Please refer to Figure 2 , Figure 2 This is a flowchart illustrating a vehicle temperature control method provided in this embodiment. The vehicle temperature control method includes:

[0077] S201. Collect the ambient temperature and interior temperature of the target vehicle.

[0078] S202. Determine whether the ambient temperature is within the preset ambient temperature threshold range. If yes, proceed to step S203; otherwise, end the process.

[0079] In this embodiment, the ambient temperature threshold range can be (10, 25).

[0080] S203. Calculate the target air outlet temperature based on the ambient temperature, vehicle interior temperature, and preset temperature.

[0081] S204. Determine the circulation mode of the air conditioning heat pump system on the target vehicle based on the ambient temperature and the target air outlet temperature.

[0082] S205. When the circulation mode is cooling mode, determine whether the air conditioning mixing damper opening on the target vehicle is at full heat opening. If yes, proceed to step S206; otherwise, end this process.

[0083] S206. Obtain the actual air outlet temperature of the mixing damper in the air conditioning heat pump system.

[0084] S207. Calculate the air outlet temperature difference based on the preset target air outlet temperature and the actual air outlet temperature.

[0085] In this embodiment, the outlet air temperature difference = actual outlet air temperature - target outlet air temperature.

[0086] S208. Determine whether the outlet air temperature difference is less than the preset outlet air temperature threshold. If yes, proceed to step S209; otherwise, end the process.

[0087] In this embodiment, if the outlet air temperature difference is less than the preset outlet air temperature threshold, it is determined that the mixing damper needs to be adjusted.

[0088] In this embodiment, the preset air outlet temperature threshold can be -5℃. Here, "-5℃" is an initial value, which can be calibrated based on the comfort evaluation of the actual vehicle.

[0089] S209. Control the air conditioning heat pump system to increase the internal circulation ratio according to the preset internal circulation increase algorithm.

[0090] In this embodiment, the method can gradually increase the proportion of internal circulation.

[0091] S210. Determine whether the air conditioning heat pump system has reached full internal circulation. If yes, proceed to step S211; otherwise, end this process.

[0092] S211. Determine whether electric drive cooling is required. If yes, end this process; otherwise, proceed to step S212.

[0093] S212, Control the air conditioning heat pump system to close the active air intake grille.

[0094] Please refer to Figure 6 , Figure 6 The diagram illustrates the effect of switching between internal and external air circulation while closing the active air intake grille on the outlet air temperature boundary. Specifically, without closing the active air intake grille, switching to internal circulation can increase the upper limit of the outlet air temperature in cooling mode by 7-8°C, creating a significant overlap between the upper limit of the outlet air temperature in cooling mode and the lower limit of the outlet air temperature in cooling / dehumidification mode (e.g., ...). Figure 6 The area between the solid line below the square mark and the solid line above the triangle mark) reduces the impact of the outlet air temperature gap; if the active air intake grille is also closed, the upper limit of the outlet air temperature in cooling mode can be further increased to 55-62℃, thereby greatly increasing the overlap between the upper limit of the outlet air temperature in cooling mode and the lower limit of the outlet air temperature in cooling and dehumidification mode (such as...). Figure 6 The area between the solid line of the circular mark and the solid line of the triangle mark is the intersection area, thereby completely eliminating the influence of the outlet air temperature crack.

[0095] In this embodiment, the subject executing the method can be a computing device such as a computer or server, and no limitation is made in this embodiment.

[0096] In this embodiment, the subject executing the method can also be a smart device such as a smartphone or tablet, and no limitation is made in this embodiment.

[0097] As can be seen, implementing the vehicle temperature control method described in this embodiment can reduce the cost of the thermal management system by eliminating the need for air PTC to supplement heat during cooling and dehumidification. Simultaneously, it can increase the upper limit of the cooling mode outlet air temperature by 7-8°C after switching to recirculation without closing the active grille shutter, creating a larger overlap between the upper limit of the cooling mode outlet air temperature and the lower limit of the cooling / dehumidification mode outlet air temperature, thereby reducing the impact of the outlet air temperature gap. Furthermore, when the active grille shutter is subsequently closed, the upper limit of the cooling mode outlet air temperature can be further increased to 55-62°C, significantly increasing the overlap between the upper limit of the cooling mode outlet air temperature and the lower limit of the cooling / dehumidification mode outlet air temperature, thus completely eliminating the impact of the outlet air temperature gap.

[0098] Example 3

[0099] Please refer to Figure 3 , Figure 3 This is a schematic diagram of a vehicle temperature control device provided in this embodiment. Figure 3 As shown, the vehicle temperature control device includes:

[0100] The data acquisition unit 310 is used to collect the ambient temperature and interior temperature of the target vehicle.

[0101] The first judgment unit 320 is used to determine whether the ambient temperature is within the preset ambient temperature threshold range;

[0102] The determining unit 330 is used to determine the circulation mode of the air conditioning heat pump system on the target vehicle based on the ambient temperature and the vehicle interior temperature when the ambient temperature is within the ambient temperature threshold range.

[0103] The second judgment unit 340 is used to determine whether the air conditioning mixing damper opening of the target vehicle is the full heat opening when the circulation mode is cooling mode.

[0104] The third judgment unit 350 is used to determine whether the air mixing damper needs to be adjusted when the air conditioning mixing damper opening is the full heat opening.

[0105] The control unit 360 is used to control the air conditioning heat pump system to increase the internal circulation ratio according to a preset internal circulation increase algorithm when the mixing damper needs to be adjusted.

[0106] In this embodiment, the explanation of the vehicle temperature control device can be referred to the description in Embodiment 1 or Embodiment 2, and will not be repeated here.

[0107] As can be seen, implementing the vehicle temperature control device described in this embodiment can reduce the cost of the thermal management system by eliminating the need for air PTC to supplement heat during cooling and dehumidification. Simultaneously, it can increase the upper limit of the cooling mode outlet air temperature by 7-8°C after switching to internal circulation without closing the active grille shutter, creating a larger overlap between the upper limit of the cooling mode outlet air temperature and the lower limit of the cooling / dehumidification mode outlet air temperature, thereby reducing the impact of the outlet air temperature gap. Furthermore, when the active grille shutter is subsequently closed, it can further increase the upper limit of the cooling mode outlet air temperature to 55-62°C, significantly increasing the overlap between the upper limit of the cooling mode outlet air temperature and the lower limit of the cooling / dehumidification mode outlet air temperature, thus completely eliminating the impact of the outlet air temperature gap.

[0108] Example 4

[0109] Please refer to Figure 4 , Figure 4 This is a schematic diagram of a vehicle temperature control device provided in this embodiment. Figure 4 As shown, the vehicle temperature control device includes:

[0110] The data acquisition unit 310 is used to collect the ambient temperature and interior temperature of the target vehicle.

[0111] The first judgment unit 320 is used to determine whether the ambient temperature is within the preset ambient temperature threshold range;

[0112] The determining unit 330 is used to determine the circulation mode of the air conditioning heat pump system on the target vehicle based on the ambient temperature and the vehicle interior temperature when the ambient temperature is within the ambient temperature threshold range.

[0113] The second judgment unit 340 is used to determine whether the air conditioning mixing damper opening of the target vehicle is the full heat opening when the circulation mode is cooling mode.

[0114] The third judgment unit 350 is used to determine whether the air mixing damper needs to be adjusted when the air conditioning mixing damper opening is the full heat opening.

[0115] The control unit 360 is used to control the air conditioning heat pump system to increase the internal circulation ratio according to a preset internal circulation increase algorithm when the mixing damper needs to be adjusted.

[0116] As an optional implementation, the determining unit 330 includes:

[0117] The first calculation subunit 331 is used to calculate the target air outlet temperature based on the ambient temperature, the vehicle interior temperature and the preset temperature when the ambient temperature is within the ambient temperature threshold range.

[0118] The first determining subunit 332 is used to determine the circulation mode of the air conditioning heat pump system on the target vehicle based on the ambient temperature and the target air outlet temperature.

[0119] As an optional implementation, the third determination unit 350 includes:

[0120] The acquisition subunit 351 is used to acquire the actual air outlet temperature of the air mixing damper in the air conditioning heat pump system when the air conditioning mixing damper opening is the full heat opening.

[0121] The second calculation subunit 352 is used to calculate the air outlet temperature difference based on the preset target air outlet temperature and the actual air outlet temperature.

[0122] Judgment subunit 353 is used to determine whether the outlet air temperature difference is less than the preset outlet air temperature threshold.

[0123] The second determining subunit 354 is used to determine that the mixing damper needs to be adjusted when the air outlet temperature difference is less than the preset air outlet temperature threshold, and to trigger the control unit 360 to control the air conditioning heat pump system to increase the internal circulation ratio according to the preset internal circulation increase algorithm.

[0124] As an optional implementation, the vehicle temperature control device further includes:

[0125] The fourth judgment unit 370 is used to determine whether the air conditioning heat pump system has reached full internal circulation;

[0126] The fourth judgment unit 370 is also used to determine whether electric drive cooling is needed when the air conditioning heat pump system has reached full internal circulation.

[0127] The control unit 360 is also used to control the air conditioning heat pump system to close the active air intake grille when electric cooling is not required.

[0128] In this embodiment, the air conditioning heat pump system includes an external heat exchanger, a cooling fan, a first solenoid valve, a second solenoid valve, a gas-liquid separator, a first electronic expansion valve, a second electronic expansion valve, a plate heat exchanger, a water PTC, a water pump, an air conditioning unit, a compressor, and water circuit components; wherein, the air conditioning unit includes a wind PTC, a built-in condenser, a mixing damper, an evaporator, and a blower.

[0129] In this embodiment, the explanation of the vehicle temperature control device can be referred to the description in Embodiment 1 or Embodiment 2, and will not be repeated here.

[0130] As can be seen, implementing the vehicle temperature control device described in this embodiment can reduce the cost of the thermal management system by eliminating the need for air PTC to supplement heat during cooling and dehumidification. Simultaneously, it can increase the upper limit of the cooling mode outlet air temperature by 7-8°C after switching to internal circulation without closing the active grille shutter, creating a larger overlap between the upper limit of the cooling mode outlet air temperature and the lower limit of the cooling / dehumidification mode outlet air temperature, thereby reducing the impact of the outlet air temperature gap. Furthermore, when the active grille shutter is subsequently closed, it can further increase the upper limit of the cooling mode outlet air temperature to 55-62°C, significantly increasing the overlap between the upper limit of the cooling mode outlet air temperature and the lower limit of the cooling / dehumidification mode outlet air temperature, thus completely eliminating the impact of the outlet air temperature gap.

[0131] This application provides an electronic device, including a memory and a processor. The memory stores a computer program, and the processor runs the computer program to enable the electronic device to perform the vehicle temperature control method in embodiment 1 or embodiment 2 of this application.

[0132] This application provides a computer-readable storage medium storing computer program instructions, which are read and executed by a processor to perform the vehicle temperature control method in embodiment 1 or embodiment 2 of this application.

[0133] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0134] In addition, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0135] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several 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 methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0136] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0137] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0138] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A vehicle temperature control method, characterized in that, include: Collect the ambient temperature and interior temperature of the target vehicle; Determine whether the ambient temperature is within the preset ambient temperature threshold range; If the ambient temperature is within the ambient temperature threshold range, then the circulation mode of the air conditioning heat pump system on the target vehicle is determined based on the ambient temperature and the vehicle interior temperature. When the cycle mode is cooling mode, determine whether the air conditioning mixing damper opening of the target vehicle is the full heat opening. The air conditioning mixing damper is an air conditioning hot and cold air mixing damper; If the air conditioning mixing damper opening is the full heat opening, then determine whether the mixing damper needs to be adjusted; If it is necessary to adjust the mixing damper, the air conditioning heat pump system is controlled to increase the internal circulation ratio according to the preset internal circulation increase algorithm; the internal circulation ratio is the air conditioning duct return air ratio.

2. The vehicle temperature control method according to claim 1, characterized in that, Determining the circulation mode of the air conditioning heat pump system in the target vehicle based on the ambient temperature and the vehicle interior temperature includes: The target air outlet temperature is calculated based on the ambient temperature, the vehicle interior temperature, and the preset temperature. The circulation mode of the air conditioning heat pump system on the target vehicle is determined based on the ambient temperature and the target air outlet temperature.

3. The vehicle temperature control method according to claim 1, characterized in that, The determination of whether the mixing damper needs to be adjusted includes: Obtain the actual outlet air temperature of the mixing damper in the air conditioning heat pump system; The outlet temperature difference is calculated based on the preset target outlet temperature and the actual outlet temperature. Determine whether the outlet air temperature difference is less than a preset outlet air temperature threshold; If so, it is determined that the mixing damper needs to be adjusted, and the internal circulation ratio of the air conditioning heat pump system is increased according to the preset internal circulation increase algorithm.

4. The vehicle temperature control method according to claim 1, characterized in that, The method further includes: Determine whether the air conditioning heat pump system has achieved full internal circulation; If the air conditioning heat pump system has already achieved full internal circulation, determine whether electric drive cooling is required; If electric cooling is not required, the air conditioning heat pump system is controlled to close the active intake grille.

5. The vehicle temperature control method according to claim 1, characterized in that, The air conditioning heat pump system includes an external heat exchanger, a cooling fan, a first solenoid valve, a second solenoid valve, a gas-liquid separator, a first electronic expansion valve, a second electronic expansion valve, a plate heat exchanger, a water PTC, a water pump, an air conditioning unit, a compressor, and water circuit components; wherein, the air conditioning unit includes a wind PTC, a built-in condenser, the mixing damper, an evaporator, and a blower.

6. A vehicle temperature control device, characterized in that, The vehicle temperature control device includes: The data acquisition unit is used to collect the ambient temperature and interior temperature of the target vehicle. The first judgment unit is used to determine whether the ambient temperature is within a preset ambient temperature threshold range; The determining unit is configured to determine the circulation mode of the air conditioning heat pump system on the target vehicle based on the ambient temperature and the vehicle interior temperature when the ambient temperature is within the ambient temperature threshold range. The second judgment unit is used to determine whether the opening of the air conditioning mixing damper on the target vehicle is the full heat opening when the circulation mode is the cooling mode; the air conditioning mixing damper is the air conditioning hot and cold mixing damper. The third judgment unit is used to determine whether the air conditioning mixing damper needs to be adjusted when the air conditioning mixing damper opening is the full heat opening. The control unit is used to control the air conditioning heat pump system to increase the internal circulation ratio according to a preset internal circulation increase algorithm when the mixing damper needs to be adjusted; the internal circulation ratio is the air return ratio of the air conditioning duct.

7. The vehicle temperature control device according to claim 6, characterized in that, The determining unit includes: The first calculation subunit is used to calculate the target air outlet temperature based on the ambient temperature, the vehicle interior temperature, and a preset temperature when the ambient temperature is within the ambient temperature threshold range. The first determining subunit is used to determine the circulation mode of the air conditioning heat pump system on the target vehicle based on the ambient temperature and the target air outlet temperature.

8. The vehicle temperature control device according to claim 6, characterized in that, The third judgment unit includes: The acquisition subunit is used to acquire the actual air outlet temperature of the air mixing damper in the air conditioning heat pump system when the opening degree of the air conditioning mixing damper is the full heat opening degree. The second calculation subunit is used to calculate the air outlet temperature difference based on the preset target air outlet temperature and the actual air outlet temperature. The judgment subunit is used to determine whether the outlet air temperature difference is less than a preset outlet air temperature threshold. The second determining subunit is used to determine that the mixing damper needs to be adjusted when the outlet air temperature difference is less than the preset outlet air temperature threshold, and to trigger the control unit to control the air conditioning heat pump system to increase the internal circulation ratio according to the preset internal circulation increase algorithm.

9. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory storing a computer program and the processor running the computer program to cause the electronic device to perform the vehicle temperature control method according to any one of claims 1 to 5.

10. A readable storage medium, characterized in that, The readable storage medium stores computer program instructions, which, when read and executed by a processor, perform the vehicle temperature control method according to any one of claims 1 to 5.

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