Temperature control method and device, vehicle and storage medium thereof

Abstract

The invention discloses a temperature control method and device, a vehicle and a storage medium thereof, and relates to the technical field of automobile thermal management. If the first evaporator and the second evaporator are started according to the environment temperature indication, the first initial opening degree of a first expansion valve and the second initial opening degree of a second expansion valve are determined according to the environment temperature; determining a second target temperature of the first evaporator and a second target temperature of the second evaporator according to the environment temperature; and the second actual temperature of the first evaporator and the third actual temperature of the second evaporator are obtained, and the rotating speed, the first initial opening degree and the second initial opening degree of the compressor are adjusted according to the environment temperature, the first actual temperature, the second actual temperature, the third actual temperature, the second target temperature and the third target temperature. According to the scheme, under the condition that the size of the evaporator is not changed, the refrigerating capacity of the air conditioner is improved, and accurate power control over the vehicle-mounted air conditioner is achieved.

Description

Technical Field

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

[0002] With the increasing number and widespread use of cars, the user base is becoming increasingly younger, and expectations for the comfort of vehicle air conditioning are rising. To prevent liquid slugging in the compressor, the evaporator outlet of the air conditioning system cannot be filled with liquid. This limits the evaporator's heat exchange capacity, resulting in insufficient cooling capacity. Furthermore, the uneven exhaust temperature of the evaporator leads to significant temperature differences in the air coming out of the vehicle. Therefore, improving the cooling capacity of the air conditioning system without changing the evaporator size has become a pressing issue. Summary of the Invention

[0003] In view of this, embodiments of this application propose a temperature control method, apparatus, vehicle, and storage medium thereof to improve the above-mentioned problems.

[0004] According to a first aspect of the embodiments of this application, a temperature control method is provided, applied to an in-vehicle air conditioner. The compressor in the in-vehicle air conditioner is connected to a first evaporator and a second evaporator, respectively. The first evaporator is controlled to open and close via a first expansion valve, and the second evaporator is controlled to open and close via a second expansion valve. The method includes: acquiring an ambient temperature and a first actual temperature inside the vehicle; if the first evaporator and the second evaporator are opened according to the ambient temperature, determining a first initial opening degree of the first expansion valve and a second initial opening degree of the second expansion valve based on the ambient temperature; determining a first target temperature of the first evaporator and a second target temperature of the second evaporator based on the ambient temperature; acquiring a second actual temperature of the first evaporator and a third actual temperature of the second evaporator, and adjusting the speed of the compressor, the first initial opening degree, and the second initial opening degree based on the ambient temperature, the first actual temperature, the second actual temperature, the third actual temperature, the first target temperature, and the second target temperature.

[0005] In some embodiments, adjusting the compressor speed, the first initial opening degree, and the second initial opening degree based on the ambient temperature, the first actual temperature, the second actual temperature, the third actual temperature, the second target temperature, and the third target temperature includes: determining the third target temperature of the vehicle based on the ambient temperature, and determining a first temperature difference between the third target temperature and the first actual temperature; determining a second temperature difference between the first target temperature and the second actual temperature; determining a third temperature difference between the second target temperature and the third actual temperature; adjusting the first initial opening degree based on the first temperature difference and the second temperature difference, and adjusting the second initial opening degree based on the first temperature difference and the third temperature difference; and adjusting the compressor speed based on the first temperature difference, the second temperature difference, and the third temperature difference.

[0006] In some embodiments, adjusting the first initial opening degree based on the first temperature difference and the second temperature difference, and adjusting the second initial opening degree based on the first temperature difference and the third temperature difference, includes: if the first temperature difference is greater than a first temperature difference threshold and the second temperature difference is greater than a second temperature difference threshold, then increasing the first initial opening degree based on the first temperature difference and the second temperature difference; and if the first temperature difference is greater than the first temperature difference threshold and the third temperature difference is greater than a third temperature difference threshold, then increasing the second initial opening degree based on the first temperature difference and the third temperature difference; if the first temperature difference is less than or equal to the first temperature difference threshold and the second temperature difference is less than or equal to the second temperature difference threshold, then decreasing the first initial opening degree based on the first temperature difference and the second temperature difference; and if the first temperature difference is less than or equal to the first temperature difference threshold and the third temperature difference is less than or equal to the third temperature difference threshold, then decreasing the second initial opening degree based on the first temperature difference and the third temperature difference; and if the first temperature difference, the second temperature difference, and the third temperature difference are all less than a fourth temperature difference threshold, then closing the second expansion valve and controlling the first initial opening degree based on the first temperature difference and the second temperature difference.

[0007] In some embodiments, adjusting the compressor speed based on the first temperature difference, the second temperature difference, and the third temperature difference includes: if the first temperature difference is greater than a first temperature difference threshold and the second temperature difference is greater than a second temperature difference threshold, then determining a maximum value among the first temperature difference, the second temperature difference, and the third temperature difference, and increasing the speed based on the maximum value; if the first temperature difference is less than or equal to the first temperature difference threshold and the second temperature difference is less than or equal to the second temperature difference threshold, then determining a minimum value among the first temperature difference, the second temperature difference, and the third temperature difference, and decreasing the speed based on the minimum value; if the first temperature difference, the second temperature difference, and the third temperature difference are all less than a fourth temperature difference threshold, then controlling the speed based on the first temperature difference and the second temperature difference.

[0008] In some embodiments, determining the first target temperature of the vehicle based on the ambient temperature includes: acquiring a set temperature of the vehicle; and adjusting the set temperature based on the ambient temperature to obtain the third target temperature.

[0009] In some embodiments, the method further includes: obtaining the operating mode of the vehicle air conditioner; determining the magnitude relationship between the ambient temperature and a temperature threshold; and, in the operating mode, activating the first evaporator and / or the second evaporator according to the magnitude relationship.

[0010] In some embodiments, the step of activating the first evaporator and / or the second evaporator according to the magnitude relationship in the operating mode includes: if the operating mode is a cooling mode and the magnitude relationship indicates that the ambient temperature is greater than or equal to a first temperature threshold, then activating the first evaporator and the second evaporator; if the operating mode is the cooling mode and the magnitude relationship indicates that the ambient temperature is less than the first temperature threshold, then activating the first evaporator and / or the second evaporator; if the operating mode is a heating mode and the magnitude relationship indicates that the ambient temperature is less than or equal to a second temperature threshold, then activating the first evaporator and the second evaporator; if the operating mode is the heating mode and the magnitude relationship indicates that the ambient temperature is greater than the second temperature threshold, then activating the first evaporator and / or the second evaporator.

[0011] According to a second aspect of the embodiments of this application, a temperature control device is provided, applied to an in-vehicle air conditioner. The compressor in the in-vehicle air conditioner is connected to a first evaporator and a second evaporator, respectively. The first evaporator is controlled to open and close via a first expansion valve, and the second evaporator is controlled to open and close via a second expansion valve. The device includes: a temperature acquisition module for acquiring an ambient temperature and a first actual temperature inside the vehicle; an initial opening degree determination module for determining a first initial opening degree of the first expansion valve and a second initial opening degree of the second expansion valve based on the ambient temperature if the first evaporator and the second evaporator are opened according to the ambient temperature indication; a target temperature determination module for determining a first target temperature of the first evaporator and a second target temperature of the second evaporator based on the ambient temperature; and an adjustment module for acquiring a second actual temperature of the first evaporator and a third actual temperature of the second evaporator, and adjusting the compressor speed, the first initial opening degree, and the second initial opening degree based on the ambient temperature, the first actual temperature, the second actual temperature, the third actual temperature, the first target temperature, and the second target temperature.

[0012] According to a third aspect of the embodiments of this application, a vehicle is provided, comprising: a processor; and a memory storing computer-readable instructions, wherein when executed by the processor, the computer-readable instructions implement the temperature control method described above.

[0013] According to a fourth aspect of the embodiments of this application, a computer-readable storage medium is provided, on which computer-readable instructions are stored, which, when executed by a processor, implement the temperature control method described above.

[0014] In this application, if the activation of the first and second evaporators is determined based on the acquired ambient temperature, then the first and second initial opening degrees connected to the first and second evaporators are determined based on the ambient temperature. Furthermore, the first target temperature of the first evaporator and the second target temperature of the second evaporator are determined based on the ambient temperature. This allows for the adjustment of the compressor speed and the first and second initial opening degrees of the first and second expansion valves based on the acquired first actual temperature inside the vehicle, the second actual temperature of the first evaporator, the third actual temperature of the second evaporator, the ambient temperature, the first target temperature, and the second target temperature, thereby achieving temperature control inside the vehicle. This solution controls the opening degree of different expansion valves based on the ambient temperature, thereby controlling the refrigerant's path in the two evaporators to adjust the target load of the vehicle air conditioner in a timely manner. This improves the cooling capacity of the air conditioner without changing the evaporator size, achieving precise power control of the vehicle air conditioner.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the embodiments of this application. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0017] Figure 1 This is a schematic diagram of a vehicle air conditioner according to an embodiment of this application.

[0018] Figure 2 This is a schematic flowchart illustrating a temperature control method according to an embodiment of this application.

[0019] Figure 3 This is a schematic flowchart illustrating a temperature control method according to another embodiment of this application.

[0020] Figure 4 This is a flowchart illustrating the specific steps of step 370 according to an embodiment of this application.

[0021] Figure 5 This is a flowchart illustrating the specific steps of step 380 according to an embodiment of this application.

[0022] Figure 6 This is a schematic flowchart illustrating a temperature control method according to another embodiment of this application.

[0023] Figure 7 This is a flowchart illustrating the specific steps of step 430 according to an embodiment of this application.

[0024] Figure 8 This is a schematic diagram of a temperature control test method according to another embodiment of this application.

[0025] Figure 9 This is a block diagram of a temperature control device according to an embodiment of this application.

[0026] Figure 10 This is a hardware structure diagram of a vehicle according to an embodiment of this application.

[0027] The accompanying drawings have illustrated specific embodiments of the present application. More detailed descriptions will follow. These drawings and descriptions are not intended to limit the scope of the present application's embodiments in any way, but rather to illustrate the concepts of the present application's embodiments to those skilled in the art through specific embodiments. Detailed Implementation

[0028] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0029] Furthermore, the described features, structures, or characteristics may be combined in one or more embodiments in any suitable manner. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more specific details, or other methods, apparatuses, steps, etc., may be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0030] Please see Figure 1 , Figure 1 An embodiment of the vehicle air conditioner provided in this application is shown, such as... Figure 1 As shown below, the method for controlling temperature in a vehicle air conditioner 100 is illustrated by way of example.

[0031] In one alternative implementation, the vehicle air conditioner 100 includes a compressor 110, a condenser 120, a first expansion valve 130, a second expansion valve 140, a first evaporator 150, and a second evaporator 160. Here, the compressor 110, condenser 120, first expansion valve 130, second expansion valve 140, first evaporator 150, and second evaporator 160 refer to hardware devices.

[0032] For example, in the vehicle air conditioner 100, the compressor 110 compresses the returning low-pressure refrigerant gas and outputs high-temperature and high-pressure gas; the high-temperature and high-pressure gas enters the condenser 120, releases heat to the external environment (air or water), and condenses into a high-pressure liquid; the high-pressure liquid then flows to the first expansion valve 130 and / or the second expansion valve 140, is throttled into low-temperature and low-pressure wet vapor, and enters the first evaporator 150 and / or the second evaporator 160, where the refrigerant absorbs heat from the object being cooled (such as air or water) and completely evaporates into low-pressure gas, which returns to the compressor 110 to complete the cycle.

[0033] For example, the vehicle controller in the vehicle first acquires the ambient temperature and the first actual temperature inside the vehicle. When the first evaporator 150 and the second evaporator 160 are activated according to the ambient temperature indication, the controller determines the first initial opening degree of the first expansion valve 130 and the second initial opening degree of the second expansion valve 140 based on the ambient temperature. Based on these first and second initial opening degrees, the first evaporator 150 and the second evaporator 160 are then activated. Next, the controller determines the first target temperature of the first evaporator 150 and the second target temperature of the second evaporator 160 based on the ambient temperature. Finally, the controller acquires the second actual temperature of the first evaporator 150 and the third actual temperature of the second evaporator 160, and adjusts the speed of the compressor 110, the first initial opening degree of the first expansion valve 130, and the second initial opening degree of the second expansion valve 140 based on the ambient temperature, the first actual temperature, the second actual temperature, the third actual temperature, the first target temperature, and the second target temperature.

[0034] For another example, in the high-temperature environment of summer, when users have a high demand for the cooling capacity of the air conditioner, the first expansion valve 130 and the second expansion valve 140 can be opened, and the opening degree of the first expansion valve 130 and the second expansion valve 140 can be adjusted based on the target evaporation temperature to achieve the maximum cooling capacity. The corresponding first evaporator 150 dehumidifies and pre-cools the air in the vehicle, and the subsequent second evaporator 160 performs secondary cooling on the air that has passed through the first evaporator to achieve the maximum cooling purpose. In the spring and autumn environment, when users have a lower demand for the cooling capacity of the air conditioner, the first expansion valve 130 or the second expansion valve 140 can be opened, and the opening degree of the first expansion valve 130 or the second expansion valve 140 can be adjusted based on the target evaporation temperature to achieve the target cooling capacity. The corresponding first evaporator 150 or the second evaporator 160 dehumidifies and cools the air in the vehicle to achieve the cooling function.

[0035] Figure 1 The system in [the document] can be used to implement the following Figure 2 For the temperature control method described, please refer to [link / reference]. Figure 2 , Figure 2 This application illustrates a temperature control method according to an embodiment of the present application. In a specific embodiment, this temperature control method can be applied to, for example... Figure 9 The temperature control device 500 and the electronic device 600 equipped with the temperature control device 500 are shown. Figure 10 The specific process of this embodiment will be described below. Of course, it is understood that this method can be executed by an electronic device with computing power, such as a desktop computer, laptop computer, cloud server, and other terminal devices with computing power. The following will focus on... Figure 2The process shown is described in detail and applied to a vehicle air conditioner. The compressor in the vehicle air conditioner is connected to a first evaporator and a second evaporator. The first evaporator is controlled to open and close through a first expansion valve, and the second evaporator is controlled to open and close through a second expansion valve. The temperature control method may specifically include the following steps 210-240.

[0036] Step 210: Obtain the ambient temperature and the first actual temperature inside the vehicle.

[0037] As an alternative method, when controlling the interior temperature of a vehicle through the vehicle's air conditioning system, since the ambient temperature of the vehicle's surroundings and the actual temperature inside the vehicle are important factors affecting the control of the interior temperature, in order to accurately and quickly control the interior temperature, the ambient temperature of the vehicle's surroundings and the first actual temperature inside the vehicle can be obtained first.

[0038] For example, a first actual temperature inside the vehicle can be obtained using a first thermometer installed inside the vehicle, and the ambient temperature of the vehicle's surroundings can be obtained using a second thermometer installed outside the vehicle. Optionally, a request to obtain the ambient temperature can be sent to a cloud server connected in communication with the vehicle, and the cloud server will respond with the ambient temperature of the vehicle's surroundings based on the request, wherein the request carries the location information of the vehicle's surroundings.

[0039] Step 220: If the first evaporator and the second evaporator are turned on according to the ambient temperature indication, then the first initial opening degree of the first expansion valve and the second initial opening degree of the second expansion valve are determined according to the ambient temperature.

[0040] As an alternative, after determining the ambient temperature of the vehicle's environment, one can first determine whether to turn on both evaporators to control the temperature inside the vehicle, thereby enabling the vehicle's interior temperature to be quickly controlled to the set temperature when needed.

[0041] In one optional scenario, when it is determined that the ambient temperature is greater than or less than a specified temperature, it is determined that the first evaporator and the second evaporator need to be turned on, so that the first evaporator and the second evaporator can work together to control the temperature inside the vehicle.

[0042] In another alternative scenario, the ambient temperature and the set temperature can be combined to determine whether to activate both the first and second evaporators to control the temperature inside the vehicle. For example, the temperature difference between the set temperature and the ambient temperature can be determined. If the temperature difference is greater than a threshold, then the first and second evaporators are activated; if the temperature difference is less than or equal to the threshold, then either the first or second evaporator is activated, thus controlling the temperature inside the vehicle using only one evaporator.

[0043] In one optional configuration, the air conditioner includes a compressor, a condenser, an evaporator, and an expansion valve. The condenser is connected to both the compressor and the expansion valve, and the other end of the compressor is connected to the evaporator. The heat exchange efficiency of the evaporator is controlled by adjusting the opening of the expansion valve. When the air conditioner is in cooling mode, the compressor compresses the low-temperature, low-pressure refrigerant gas output from the evaporator into a high-temperature, high-pressure gas, which is then output to the condenser. The high-temperature, high-pressure gas condenses into a high-temperature, high-pressure liquid in the condenser, releasing a large amount of heat to the outside atmosphere. The high-temperature, high-pressure refrigerant liquid increases in volume after passing through the expansion valve, causing a sharp drop in pressure and temperature. It exits the electronic expansion valve as a mist, entering the evaporator. At this point, the refrigerant's boiling point is much lower than the temperature inside the evaporator, causing the refrigerant liquid to evaporate into a gas. During evaporation, it absorbs a large amount of heat from the surrounding environment, thereby lowering the temperature of the car's battery. The low-temperature, low-pressure refrigerant vapor then re-enters the compressor.

[0044] Therefore, the opening degree of the expansion valve determines the amount of atomized refrigerant liquid input to the evaporator, which directly affects the superheat of the evaporator. Thus, by controlling the opening degree of the expansion valve, the superheat of the evaporator can be adjusted, thereby adjusting the cooling effect of the refrigerant.

[0045] In another alternative scenario, the air conditioner can have two evaporators connected in series. The choice between using one or two evaporators to control the vehicle's interior temperature depends on the air conditioner's operational requirements. Optionally, in hot summer conditions where the air conditioning's cooling capacity is high, two evaporators can work together to control the vehicle's interior temperature. This is achieved by adjusting the expansion valve opening based on the target evaporation temperature to achieve maximum cooling capacity. The first evaporator dehumidifies and pre-cools the air inside the vehicle, while the second evaporator further cools the air passing through the first evaporator, achieving maximum cooling. Because the air temperature is relatively uniform after dehumidification in the first evaporator, the air temperature is very evenly distributed across the evaporator surface after cooling in the second evaporator before entering the vehicle, minimizing the temperature difference between the various air vents inside the vehicle.

[0046] Optionally, in spring and autumn when the demand for air conditioning temperature control is low, one evaporator can be turned on, and the opening of the expansion valve can be adjusted based on the target evaporation temperature to achieve the target cooling capacity. In this way, the temperature inside the vehicle can be controlled by the evaporator corresponding to the opened expansion valve.

[0047] As an alternative, when it is determined that the first evaporator and the second evaporator work together to control the temperature inside the vehicle, in order to ensure that the temperature inside the vehicle can be controlled quickly, the initial opening degree of the first expansion valve and the second expansion valve corresponding to the first evaporator and the second evaporator can be determined first. In this way, when the temperature inside the vehicle changes, the initial opening degree of the first expansion valve and the second expansion valve can be adjusted in real time to achieve accurate control of the temperature inside the vehicle.

[0048] In one optional scenario, the first initial opening degree of the first expansion valve and the second initial opening degree of the second expansion valve can be determined comprehensively based on the actual temperature inside the vehicle and the target set temperature of the air conditioner. Optionally, different correspondences between actual and set temperatures and the opening degrees of the first and second expansion valves can be preset, thereby enabling the determination of the first and second initial opening degrees based on these correspondences and the obtained actual and target set temperatures inside the vehicle.

[0049] In another alternative scenario, the first initial opening and the second initial opening can be the required openings of the first expansion valve and the second expansion valve when the actual superheat of the first and second evaporators matches the target superheat. The initial opening can be determined based on the superheat deviation between the actual superheat and the target superheat. The actual superheat refers to the degree to which the steam temperature exceeds the saturation temperature at the corresponding pressure. The target superheat refers to the superheat corresponding to the maximum heat dissipation effect of the evaporator. Optionally, the actual superheat corresponding to the first and second evaporators can be determined based on their respective actual pressure data; the first initial opening of the first expansion valve and the second initial opening of the second expansion valve can be determined based on the actual superheat and the preset target superheat.

[0050] Step 230: Determine the first target temperature of the first evaporator and the second target temperature of the second evaporator based on the ambient temperature.

[0051] As an alternative approach, in order to control the temperature inside the vehicle through the first evaporator and the second evaporator, a first target temperature corresponding to the first evaporator and a second target temperature corresponding to the second evaporator can be determined firstly, so that the actual temperature of the first evaporator can be controlled at the first target temperature and the actual temperature of the second evaporator can be controlled at the second target temperature.

[0052] Optionally, a mapping relationship between target temperatures corresponding to different ambient temperature ranges can be preset. After obtaining the ambient temperature of the vehicle, the first target temperature and the second target temperature can be determined based on the ambient temperature and this mapping relationship. As shown in Table 1, the first target temperature and the second target temperature differ for different ambient temperatures.

[0053] Table 1. Mapping Relationship between Ambient Temperature and First and Second Target Temperatures

[0054] When the ambient temperature is below 30°C, the second evaporator can be turned off, and the temperature inside the vehicle can be controlled by the first evaporator, thus avoiding waste of resources.

[0055] Step 240: Obtain the second actual temperature of the first evaporator and the third actual temperature of the second evaporator, and adjust the compressor speed, the first initial opening degree and the second initial opening degree according to the ambient temperature, the first actual temperature, the second actual temperature, the third actual temperature, the first target temperature and the second target temperature.

[0056] As an alternative approach, to control the vehicle's interior temperature in real time, the first initial opening of the first expansion valve and the second initial opening of the second expansion valve can be adjusted in real time. This allows the air conditioner to maintain temperature control while saving energy. Alternatively, to accurately control the vehicle's interior temperature, the second actual temperature and the third actual temperature of the first evaporator can be obtained first. Based on the ambient temperature, the first actual temperature, the second actual temperature, the third actual temperature, the second target temperature, and the third target temperature, the compressor's speed, the first initial opening, and the second initial opening can be adjusted.

[0057] In the embodiments of this application, if the first evaporator and the second evaporator are activated based on the obtained ambient temperature, then the first initial opening degree and the second initial opening degree connected to the first evaporator and the second evaporator are determined based on the ambient temperature. Furthermore, the first target temperature of the first evaporator and the second target temperature of the second evaporator are determined based on the ambient temperature. This allows for the adjustment of the compressor speed and the first initial opening degree of the first expansion valve and the second initial opening degree of the second expansion valve based on the obtained first actual temperature inside the vehicle, the second actual temperature of the first evaporator, the third actual temperature of the second evaporator, the ambient temperature, the first target temperature, and the second target temperature, thereby achieving temperature control inside the vehicle. This solution controls the opening degree of different expansion valves based on the ambient temperature, thereby controlling the refrigerant's path in the two evaporators to adjust the target load of the vehicle air conditioner in a timely manner. This improves the cooling capacity of the air conditioner without changing the evaporator size, achieving precise power control of the vehicle air conditioner.

[0058] Please see Figure 3 , Figure 3 This application illustrates a temperature control method according to an embodiment of the present application. The following will focus on... Figure 3The process shown is described in detail and applied to a vehicle air conditioner. The compressor in the vehicle air conditioner is connected to a first evaporator and a second evaporator. The first evaporator is controlled to open and close through a first expansion valve, and the second evaporator is controlled to open and close through a second expansion valve. The temperature control method may specifically include the following steps 310-380.

[0059] Step 310: Obtain the ambient temperature and the first actual temperature inside the vehicle.

[0060] Step 320: If the first evaporator and the second evaporator are turned on according to the ambient temperature indication, then the first initial opening degree of the first expansion valve and the second initial opening degree of the second expansion valve are determined according to the ambient temperature.

[0061] Step 330: Determine the first target temperature of the first evaporator and the second target temperature of the second evaporator based on the ambient temperature.

[0062] The specific steps of steps 310-330 can be found in steps 210-230, and will not be repeated here.

[0063] Step 340: Determine the third target temperature of the vehicle based on the ambient temperature, and determine the first temperature difference between the third target temperature and the first actual temperature.

[0064] As an alternative, to ensure a good user experience, after obtaining the ambient temperature, a suitable temperature for the user can be determined based on the ambient temperature, and this suitable temperature can be set as the third target temperature. This will improve the user experience while ensuring the control of the temperature inside the vehicle.

[0065] As an alternative approach, in an air conditioner, the evaporator's heat exchange efficiency is affected by the opening degree of the corresponding expansion valves; the larger the opening degree of the first and second expansion valves, the faster the corresponding temperature rises or falls. However, to prevent the evaporator from always operating in a high heat exchange state, it is necessary to control the opening degree of the expansion valves based on the actual temperature inside the vehicle. Therefore, a first temperature difference can be determined between a third target temperature inside the vehicle and a first actual temperature inside the vehicle, and this first temperature difference can be used to control the opening degree of the first and second expansion valves.

[0066] In some embodiments, step 340 includes: obtaining the set temperature of the vehicle; adjusting the set temperature according to the ambient temperature to obtain the third target temperature.

[0067] As one approach, to ensure the first temperature is more realistic, a third target temperature can be determined by combining the ambient temperature and the set temperature. This ensures the determined third target temperature is more realistic and further improves the user experience. Optionally, a lookup table between different ambient temperatures and target temperatures can be pre-set, as shown in Table 2. Then, based on the real-time acquired ambient temperature and the lookup table, an initial target temperature is initially determined. Finally, the set temperature is adjusted based on the difference between the initial target temperature and the set temperature.

[0068] Table 2. Comparison of different ambient temperatures and initial target temperatures

[0069] Optionally, if the difference between the initial target temperature and the set temperature is greater than 0, the set temperature is adjusted to the initial target temperature to obtain the third target temperature; if the set temperature is greater than the initial target temperature, the set temperature is determined as the third target temperature.

[0070] Step 350: Determine the second temperature difference between the first target temperature and the second actual temperature.

[0071] As an alternative approach, due to the temperature difference between the refrigerant temperature inside the evaporator and the ambient air temperature flowing through the fins, the lower the evaporator surface temperature, the greater the temperature difference with the actual interior temperature, resulting in a faster heat exchange rate, stronger cooling capacity, and faster cooling speed. Conversely, the higher the evaporator surface temperature, the smaller the temperature difference with the actual interior temperature, resulting in a slower heat exchange rate, weaker cooling capacity, and slower cooling speed. Therefore, to ensure the vehicle's air conditioner can effectively control the interior temperature, a second temperature difference needs to be determined between the first target temperature of the first evaporator and the second actual temperature of the first evaporator. This second temperature difference allows for the control of the opening of the first expansion valve, ensuring that the second actual temperature of the first evaporator is maintained near the first target temperature, thus guaranteeing the accuracy of the air conditioner's temperature control over the vehicle's interior.

[0072] Step 360: Determine the third temperature difference between the second target temperature and the third actual temperature.

[0073] As an alternative approach, in order to ensure the vehicle's air conditioner controls the temperature inside the vehicle, it is necessary to determine the third temperature difference between the second target temperature of the second evaporator and the third actual temperature of the second evaporator. This allows the opening of the second expansion valve to be controlled based on the third temperature difference, thereby maintaining the third actual temperature of the second evaporator near the second target temperature and ensuring the accuracy of the air conditioner's temperature control inside the vehicle.

[0074] Step 370: Adjust the first initial opening degree according to the first temperature difference and the second temperature difference, and adjust the second initial opening degree according to the first temperature difference and the third temperature difference.

[0075] As an alternative approach, after determining the first temperature difference and the second temperature difference, in order to ensure that the temperature of the first evaporator surface and the second evaporator surface can be maintained near the first target temperature and the second target temperature, the first initial opening degree can be adjusted by the first temperature difference and the second temperature difference, and the second initial opening degree can be adjusted according to the first temperature difference and the third temperature difference, thereby achieving this.

[0076] In some embodiments, such as Figure 4 As shown, step 370 includes steps 371-373.

[0077] Step 371: If the first temperature difference is greater than the first temperature difference threshold and the second temperature difference is greater than the second temperature difference threshold, then the first initial opening degree is increased according to the first temperature difference and the second temperature difference; and if the first temperature difference is greater than the first temperature difference threshold and the third temperature difference is greater than the third temperature difference threshold, then the second initial opening degree is increased according to the first temperature difference and the third temperature difference.

[0078] As an alternative approach, when the first temperature difference is greater than the first temperature threshold and the second temperature difference is greater than the second temperature difference threshold, it can be determined that the temperature of the first evaporator surface is too high or too low, and the temperature inside the vehicle is significantly different from the third target temperature. In order to make the temperature of the first evaporator surface closer to the first target temperature and the temperature inside the vehicle closer to the third target temperature, the first initial opening can be increased based on the first temperature difference and the second temperature difference, thereby increasing the heat exchange efficiency of the first evaporator.

[0079] Similarly, when it is determined that the first temperature difference is greater than the first temperature threshold and the third temperature difference is greater than the third temperature difference threshold, it can be determined that the temperature of the second evaporator surface is too high or too low, and the temperature inside the vehicle is significantly different from the third target temperature. In order to make the temperature of the second evaporator surface closer to the second target temperature and the temperature inside the vehicle closer to the third target temperature, the second initial opening can be increased according to the first temperature difference and the second temperature difference, thereby increasing the heat exchange efficiency of the second evaporator.

[0080] Step 372: If the first temperature difference is less than or equal to the first temperature difference threshold and the second temperature difference is less than or equal to the second temperature difference threshold, then the first initial opening degree is reduced according to the first temperature difference and the second temperature difference; and if the first temperature difference is less than or equal to the first temperature difference threshold and the third temperature difference is less than or equal to the third temperature difference threshold, then the second initial opening degree is reduced according to the first temperature difference and the third temperature difference.

[0081] As an alternative approach, when the first temperature difference is less than or equal to the first temperature threshold and the second temperature difference is less than or equal to the second temperature difference threshold, it can be determined that the temperature inside the vehicle has been controlled. In order to avoid excessive heat exchange in the first evaporator, the first initial opening can be reduced according to the first temperature difference and the second temperature difference, thereby reducing the heat exchange efficiency of the first evaporator.

[0082] Similarly, when the first temperature difference is less than or equal to the first temperature threshold and the second temperature difference is less than or equal to the second temperature difference threshold, it can be determined that the temperature inside the vehicle has been controlled. In order to avoid excessive heat exchange in the second evaporator, the second initial opening can be reduced according to the first temperature difference and the third temperature difference, so that the heat exchange efficiency of the second evaporator is reduced.

[0083] Step 373: If the first temperature difference, the second temperature difference, and the third temperature difference are all less than the fourth temperature difference threshold, then close the second expansion valve and control the first initial opening degree according to the first temperature difference and the second temperature difference.

[0084] As an alternative approach, when the first temperature difference, the second temperature difference, and the third temperature difference are all less than the fourth temperature difference threshold, it can be determined that the temperature inside the vehicle is close to the set temperature. In this case, it is only necessary to maintain the temperature near the set temperature. To avoid reducing the lifespan of the air conditioner due to the use of the first and second evaporators for temperature control, the second expansion valve can be closed, and the first initial opening can be controlled only by the first and second temperature differences. In this way, the temperature inside the vehicle can be controlled solely by the first evaporator.

[0085] Optionally, after closing the second expansion valve, if the first temperature difference and the second temperature difference are greater than 0, the first initial opening can be increased; if the first temperature difference and the second temperature difference are less than 0, the first initial opening can be decreased.

[0086] Please continue reading. Figure 3 Step 380: Adjust the speed of the compressor according to the first temperature difference, the second temperature difference and the third temperature difference.

[0087] As an alternative approach, in an air conditioner, the compressor's rotation speed affects the temperature control of the vehicle's interior; the faster the compressor rotates, the faster the temperature rises or falls. However, to avoid the compressor operating at high speed, it's necessary to control the compressor's rotation speed based on the actual temperature inside the vehicle. Therefore, the compressor speed can be adjusted using a first temperature difference, a second temperature difference, and a third temperature difference.

[0088] In some embodiments, such as Figure 5 As shown, step 380 includes steps 381-383.

[0089] Step 381: If the first temperature difference is greater than the first temperature difference threshold and the second temperature difference is greater than the second temperature difference threshold, then determine the maximum value among the first temperature difference, the second temperature difference and the third temperature difference, and increase the rotation speed according to the maximum value.

[0090] As an alternative approach, when the first temperature difference is greater than the first temperature threshold and the second temperature difference is greater than the second temperature difference threshold, it can be determined that the temperature inside the vehicle is significantly different from the third target temperature, and the compressor speed needs to be increased to achieve rapid heating or rapid cooling.

[0091] Optionally, in order to accurately control the compressor speed, a maximum value can be determined among the first temperature difference, the second temperature difference, and the third temperature difference, and the compressor speed can be increased based on this maximum value. Specifically, a correspondence between different temperature differences and target speed values ​​can be preset. After determining the maximum value among the first, second, and third temperature differences, the target compressor speed is determined based on the maximum value and this correspondence, and the compressor speed is increased based on the target speed.

[0092] Step 382: If the first temperature difference is less than or equal to the first temperature difference threshold and the second temperature difference is less than or equal to the second temperature difference threshold, then determine the minimum value among the first temperature difference, the second temperature difference and the third temperature difference, and reduce the rotation speed according to the minimum value.

[0093] As an alternative approach, when the first temperature difference is less than or equal to the first temperature threshold and the second temperature difference is less than or equal to the second temperature difference threshold, it can be determined that the temperature inside the vehicle is close to the third target temperature. In this case, the compressor does not need to be running at high speed. Based on the minimum value between the first, second, and third temperature differences, the compressor speed can be reduced so that the temperature inside the vehicle gradually approaches the third target temperature.

[0094] Step 383: If the first temperature difference, the second temperature difference, and the third temperature difference are all less than the fourth temperature difference threshold, then the rotation speed is controlled according to the first temperature difference and the second temperature difference.

[0095] As an alternative approach, when the first temperature difference, the second temperature difference, and the third temperature difference are all less than the fourth temperature difference threshold, it can be determined that the temperature inside the vehicle is near the third target temperature difference. In this case, only one evaporator is needed to control the temperature inside the vehicle to maintain the third target temperature. The compressor speed can be adjusted in real time by determining the maximum value between the first temperature difference and the second temperature difference.

[0096] In this embodiment, the compressor speed, first outlet opening degree and second initial opening degree are adjusted specifically based on the first target temperature and second actual temperature of the first evaporator, the second target temperature and third actual temperature of the second evaporator, and the difference between the first actual temperature and the third target temperature inside the vehicle, thereby achieving precise control of the temperature inside the vehicle.

[0097] Please see Figure 6 , Figure 6 This application illustrates a temperature control method according to an embodiment of the present application. The following will focus on... Figure 6 The process shown is described in detail and applied to a vehicle air conditioner. The compressor in the vehicle air conditioner is connected to a first evaporator and a second evaporator. The first evaporator is controlled to open and close through a first expansion valve, and the second evaporator is controlled to open and close through a second expansion valve. The temperature control method may specifically include the following steps 410-430.

[0098] Step 410: Obtain the operating mode of the vehicle air conditioner.

[0099] As one approach, since the conditions for determining whether to simultaneously activate the first and second evaporators differ depending on the operating mode of the vehicle's air conditioner, it is necessary to first determine the vehicle's air conditioner's operating mode before deciding whether to activate both evaporators based on the ambient temperature obtained under that mode. Operating modes include cooling mode, heating mode, dehumidification mode, and fan mode.

[0100] Step 420: Determine the magnitude relationship between the ambient temperature and the temperature threshold.

[0101] As an alternative approach, since ambient temperature is a crucial factor affecting the vehicle's interior temperature control by the air conditioner, it's necessary to determine the relationship between the ambient temperature and a temperature threshold to decide whether to simultaneously activate the first and second evaporators. When it's determined that simultaneous activation of both evaporators is required, the refrigerant's path within the two evaporators is controlled by the first and second expansion valves to adjust the target air conditioning load in a timely manner. This achieves the goal of both meeting user expectations and precisely controlling the air conditioner's power. The relationship can include ambient temperature greater than the temperature threshold, ambient temperature less than the temperature threshold, and ambient temperature equal to the temperature threshold.

[0102] Step 430: In the operating mode, the first evaporator and / or the second evaporator are turned on according to the size relationship.

[0103] As an alternative, in cooling mode, the activation of the first or second evaporator, and the activation of the first or second evaporator, can be determined based on the relationship between the ambient temperature and the temperature threshold in cooling mode.

[0104] For example, if the relationship between the ambient temperature and the temperature threshold in the cooling mode indicates that the ambient temperature is greater than the temperature threshold in the cooling mode, it can be determined that the first evaporator and the second evaporator can be turned on; if the relationship between the ambient temperature and the temperature threshold in the cooling mode indicates that the ambient temperature is less than or equal to the temperature threshold in the cooling mode, it can be determined that the first evaporator or the second evaporator can be turned on.

[0105] For example, in heating mode, the activation of the first or second evaporator, and vice versa, can be determined based on the relationship between the ambient temperature and a temperature threshold in the heating mode. For example, if the relationship between the ambient temperature and the temperature threshold in the heating mode indicates that the ambient temperature is greater than the temperature threshold, the activation of the first or second evaporator can be determined; if the relationship indicates that the ambient temperature is less than or equal to the temperature threshold in the heating mode, the activation of the first or second evaporator can be determined.

[0106] In some embodiments, such as Figure 7 As shown, step 430 includes steps 431-434.

[0107] Step 431: If the working mode is cooling mode and the size relationship indicates that the ambient temperature is greater than or equal to the first temperature threshold, then the first evaporator and the second evaporator are turned on.

[0108] As an alternative approach, when the operating mode is determined to be cooling mode and the ambient temperature indicated by the magnitude relationship is greater than or equal to a first temperature threshold, it is determined that the cooling demand of the vehicle air conditioner is high. In this case, the first evaporator and the second evaporator can be activated, thereby using both evaporators to perform cooling and heat exchange. Optionally, activating the first evaporator and the second evaporator can be achieved by activating the first expansion valve and the second expansion valve.

[0109] Step 432: If the working mode is the cooling mode and the size relationship indicates that the ambient temperature is less than the first temperature threshold, then turn on the first evaporator / or the second evaporator.

[0110] As an alternative approach, when the operating mode is determined to be cooling mode and the ambient temperature indicated by the magnitude of the temperature difference is less than a first temperature threshold, it is determined that the cooling demand of the vehicle air conditioner is low. In this case, either the first evaporator or the second evaporator can be activated, thus achieving cooling and heat exchange using only one evaporator. Optionally, activating the first or second evaporator can be achieved by opening either the first or second expansion valve.

[0111] Step 433: If the working mode is heating mode and the size relationship indicates that the ambient temperature is less than or equal to the second temperature threshold, then turn on the first evaporator and the second evaporator.

[0112] As an alternative approach, when the operating mode is determined to be heating mode and the magnitude relationship indicates that the ambient temperature is greater than or equal to the second temperature threshold, it is determined that the heating demand of the vehicle air conditioner is high at this time. In this case, it can be determined to activate the first evaporator and the second evaporator, thereby using both evaporators to provide heating. Optionally, when determining to activate the first evaporator and the second evaporator, it can be achieved by activating the first expansion valve and the second expansion valve.

[0113] Step 434: If the working mode is the heating mode and the size relationship indicates that the ambient temperature is greater than the second temperature threshold, then turn on the first evaporator / or the second evaporator.

[0114] As an alternative, when the operating mode is determined to be heating mode and the ambient temperature indicated by the magnitude relationship is less than the second temperature threshold, it is determined that the heating demand of the vehicle air conditioner is low. In this case, it can be determined to activate either the first evaporator or the second evaporator, thus providing heating by using only one evaporator. Optionally, activating the first or second evaporator can be achieved by activating either the first or second expansion valve.

[0115] In this embodiment, the system determines whether to simultaneously activate both evaporators to control the temperature inside the vehicle based on the obtained operating mode of the vehicle air conditioner and the determined relationship between the ambient temperature and the temperature threshold. This solves the problem of uneven temperature distribution at each air outlet and power limitation caused by the uneven distribution of refrigerant in a single evaporator.

[0116] Figure 8 This is a flowchart illustrating a temperature control method according to an embodiment of this application, such as... Figure 8 As shown, an ambient temperature sensor can be installed at the front of the vehicle to continuously update and collect the ambient temperature during vehicle operation. This ambient temperature is then sent to the Vehicle Control Unit (VCU). The onboard air conditioner then identifies the ambient temperature sent by the VCU, determines the target evaporator temperature for the corresponding first and second evaporators, and triggers the initial opening of the first and second expansion valves. Simultaneously, the onboard air conditioner identifies the ambient temperature sent by the VCU, determines the target interior temperature, and adjusts the compressor speed based on the difference between the actual interior temperature and the target interior temperature.

[0117] Specifically, when the temperature difference between the actual temperature inside the vehicle and the target temperature inside the vehicle is greater than 5°C and the temperature difference between the actual temperature of the evaporator and the target temperature of the evaporator is greater than 4°C, the compressor speed is increased, and the initial opening of the first expansion valve and the second expansion valve are increased simultaneously.

[0118] Optionally, when the temperature difference between the actual temperature inside the vehicle and the target temperature inside the vehicle is ≤5℃ and the temperature difference between the actual temperature of the evaporator and the target temperature of the evaporator is ≤4℃, the compressor speed and the number of working steps of the first and second expansion valves are reduced.

[0119] Optionally, when the temperature difference between the actual temperature inside the vehicle and the target temperature inside the vehicle is less than 2°C and the temperature difference between the actual temperature of the evaporator and the target temperature of the evaporator is less than 2°C, the second expansion valve is closed. At the same time, the initial opening of the compressor and the first expansion valve is adjusted according to the temperature difference between the actual temperature inside the vehicle and the target temperature inside the vehicle and the temperature difference between the actual temperature of the evaporator and the target temperature of the evaporator. The compressor speed and the opening of the first expansion valve are controlled in a closed loop with the temperature difference between the actual temperature inside the vehicle and the target temperature inside the vehicle and the temperature difference between the actual temperature of the evaporator and the target temperature of the evaporator as the target, so as to achieve the purpose of energy saving.

[0120] The above embodiments describe in detail the temperature control method provided by the embodiments of this application. In other embodiments, this application also provides a temperature control device. Figure 9 This is a block diagram of a temperature control device according to an embodiment of this application, such as... Figure 9As shown, this device is applied to a vehicle air conditioner. The compressor in the vehicle air conditioner is connected to a first evaporator and a second evaporator. The first evaporator is controlled to open and close via a first expansion valve, and the second evaporator is controlled to open and close via a second expansion valve. The temperature control device 500 includes: a temperature acquisition module 510, an initial opening degree determination module 520, a target temperature determination module 530, and an adjustment module 540.

[0121] Temperature acquisition module 510 is used to acquire the ambient temperature and a first actual temperature inside the vehicle; initial opening determination module 520 is used to determine the first initial opening of the first expansion valve and the second initial opening of the second expansion valve based on the ambient temperature if the first evaporator and the second evaporator are opened according to the ambient temperature indication; target temperature determination module 530 is used to determine the first target temperature of the first evaporator and the second target temperature of the second evaporator based on the ambient temperature; adjustment module 540 is used to acquire the second actual temperature of the first evaporator and the third actual temperature of the second evaporator, and adjust the compressor speed, the first initial opening, and the second initial opening based on the ambient temperature, the first actual temperature, the second actual temperature, the third actual temperature, the first target temperature, and the second target temperature.

[0122] In some embodiments, the adjustment module 540 includes: a first determining submodule, configured to determine a third target temperature of the vehicle based on the ambient temperature, and to determine a first temperature difference between the third target temperature and the first actual temperature; a second determining submodule, configured to determine a second temperature difference between the first target temperature and the second actual temperature; a third determining submodule, configured to determine a third temperature difference between the second target temperature and the third actual temperature; a first adjusting submodule, configured to adjust a first initial opening degree based on the first temperature difference and the second temperature difference, and to adjust a second initial opening degree based on the first temperature difference and the third temperature difference; and a second adjusting submodule, configured to adjust the speed of the compressor based on the first temperature difference, the second temperature difference, and the third temperature difference.

[0123] In some embodiments, the second adjustment submodule includes: a first adjustment unit, configured to increase the first initial opening degree according to the first temperature difference and the second temperature difference if the first temperature difference is greater than a first temperature difference threshold and the second temperature difference is greater than a second temperature difference threshold, and to increase the second initial opening degree according to the first temperature difference and the third temperature difference if the first temperature difference is greater than the first temperature difference threshold and the third temperature difference is greater than a third temperature difference threshold; a second adjustment unit, configured to decrease the first initial opening degree according to the first temperature difference and the second temperature difference if the first temperature difference is less than or equal to the first temperature difference threshold and the second temperature difference is less than or equal to the second temperature difference threshold, and to decrease the second initial opening degree according to the first temperature difference and the third temperature difference if the first temperature difference is less than or equal to the first temperature difference threshold and the third temperature difference is less than or equal to the third temperature difference threshold; and a third adjustment unit, configured to close the second expansion valve and control the first initial opening degree according to the first temperature difference and the second temperature difference if the first temperature difference, the second temperature difference, and the third temperature difference are all less than a fourth temperature difference threshold.

[0124] In some embodiments, the second adjustment submodule includes: a fourth adjustment unit, configured to determine a maximum value among the first temperature difference, the second temperature difference, and the third temperature difference if the first temperature difference is greater than a first temperature difference threshold and the second temperature difference is greater than a second temperature difference threshold, and increase the rotational speed according to the maximum value; a fifth adjustment unit, configured to determine a minimum value among the first temperature difference, the second temperature difference, and the third temperature difference if the first temperature difference is less than or equal to the first temperature difference threshold and the second temperature difference is less than or equal to the second temperature difference threshold, and decrease the rotational speed according to the minimum value; and a sixth adjustment unit, configured to control the rotational speed according to the first temperature difference and the second temperature difference if the first temperature difference, the second temperature difference, and the third temperature difference are all less than a fourth temperature difference threshold.

[0125] In some embodiments, the first determining submodule includes: a set temperature acquisition unit, configured to acquire the set temperature of the vehicle; and a first target temperature determining unit, configured to adjust the set temperature according to the ambient temperature to obtain the third target temperature.

[0126] In some embodiments, the temperature control device 500 further includes a working mode acquisition module for acquiring the working mode of the vehicle air conditioner; a magnitude relationship determination module for determining the magnitude relationship between the ambient temperature and the temperature threshold; and a control module for activating the first evaporator and / or the second evaporator according to the magnitude relationship in the working mode.

[0127] In some embodiments, the control module includes: a first control submodule, configured to turn on the first evaporator and the second evaporator if the operating mode is a cooling mode and the magnitude relationship indicates that the ambient temperature is greater than or equal to a first temperature threshold; a second control submodule, configured to turn on the first evaporator / or the second evaporator if the operating mode is the cooling mode and the magnitude relationship indicates that the ambient temperature is less than the first temperature threshold; a third control submodule, configured to turn on the first evaporator and the second evaporator if the operating mode is a heating mode and the magnitude relationship indicates that the ambient temperature is less than or equal to a second temperature threshold; and a fourth control submodule, configured to turn on the first evaporator / or the second evaporator if the operating mode is the heating mode and the magnitude relationship indicates that the ambient temperature is greater than the second temperature threshold.

[0128] According to one aspect of the embodiments of this application, such as Figure 10 As shown, the electronic device 600 also includes a processor 610 and one or more memories 620. The one or more memories 620 are used to store program instructions executed by the processor 610. When the processor 610 executes the program instructions, it implements the above-described method of assembling the components.

[0129] Furthermore, the processor 610 may include one or more processing cores. The processor 610 runs or executes instructions, programs, code sets, or instruction sets stored in the memory 620, and retrieves data stored in the memory 620. Optionally, the processor 610 may be implemented using at least one hardware form selected from Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The processor 610 may integrate one or a combination of several of the following: Central Processing Unit (CPU), Graphics Processing Unit (GPU), and modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the displayed content; and the modem handles wireless communication. It is understood that the modem may also not be integrated into the processor and may be implemented using a separate communication chip.

[0130] According to one aspect of this application, a computer-readable storage medium is also provided, which may be included in the cloud server described in the above embodiments; or it may exist independently and not assembled into the cloud server. The aforementioned computer-readable storage medium carries computer-readable instructions that, when executed by a processor, implement the methods in any of the above embodiments.

[0131] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. Computer-readable storage media can be, for example, but not limited to: electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium can include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such transmitted data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device.

[0132] The units described in the embodiments of this application can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0133] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0134] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A method for controlling temperature, characterized in that, An application is made in a vehicle air conditioner, wherein the compressor of the vehicle air conditioner is connected to a first evaporator and a second evaporator respectively, the first evaporator is controlled to open and close via a first expansion valve, and the second evaporator is controlled to open and close via a second expansion valve. The method includes: Obtain the ambient temperature and the first actual temperature inside the vehicle; If the first evaporator and the second evaporator are turned on according to the ambient temperature indication, then the first initial opening degree of the first expansion valve and the second initial opening degree of the second expansion valve are determined according to the ambient temperature. The first target temperature of the first evaporator and the second target temperature of the second evaporator are determined based on the ambient temperature. The second actual temperature of the first evaporator and the third actual temperature of the second evaporator are obtained, and the speed of the compressor, the first initial opening degree and the second initial opening degree are adjusted according to the ambient temperature, the first actual temperature, the second actual temperature, the third actual temperature, the first target temperature and the second target temperature.

2. The method according to claim 1, characterized in that, The step of adjusting the compressor speed, the first initial opening degree, and the second initial opening degree based on the ambient temperature, the first actual temperature, the second actual temperature, the third actual temperature, the first target temperature, and the second target temperature includes: The third target temperature of the vehicle is determined based on the ambient temperature, and a first temperature difference between the third target temperature and the first actual temperature is determined. Determine a second temperature difference between the first target temperature and the second actual temperature; Determine a third temperature difference between the second target temperature and the third actual temperature; The first initial opening is adjusted according to the first temperature difference and the second temperature difference, and the second initial opening is adjusted according to the first temperature difference and the third temperature difference; The compressor speed is adjusted based on the first temperature difference, the second temperature difference, and the third temperature difference.

3. The method according to claim 2, characterized in that, The step of adjusting the first initial opening based on the first temperature difference and the second temperature difference, and adjusting the second initial opening based on the first temperature difference and the third temperature difference, includes: If the first temperature difference is greater than the first temperature difference threshold and the second temperature difference is greater than the second temperature difference threshold, then the first initial opening is increased according to the first temperature difference and the second temperature difference; and if the first temperature difference is greater than the first temperature difference threshold and the third temperature difference is greater than the third temperature difference threshold, then the second initial opening is increased according to the first temperature difference and the third temperature difference. If the first temperature difference is less than or equal to the first temperature difference threshold and the second temperature difference is less than or equal to the second temperature difference threshold, then the first initial opening is reduced according to the first temperature difference and the second temperature difference; and if the first temperature difference is less than or equal to the first temperature difference threshold and the third temperature difference is less than or equal to the third temperature difference threshold, then the second initial opening is reduced according to the first temperature difference and the third temperature difference. If the first temperature difference, the second temperature difference, and the third temperature difference are all less than the fourth temperature difference threshold, then the second expansion valve is closed, and the first initial opening degree is controlled according to the first temperature difference and the second temperature difference.

4. The method according to claim 2, characterized in that, The step of adjusting the compressor speed based on the first temperature difference, the second temperature difference, and the third temperature difference includes: If the first temperature difference is greater than the first temperature difference threshold and the second temperature difference is greater than the second temperature difference threshold, then the maximum value among the first temperature difference, the second temperature difference and the third temperature difference is determined, and the rotation speed is increased according to the maximum value; If the first temperature difference is less than or equal to the first temperature difference threshold and the second temperature difference is less than or equal to the second temperature difference threshold, then the minimum value is determined among the first temperature difference, the second temperature difference and the third temperature difference, and the rotation speed is reduced according to the minimum value; If the first temperature difference, the second temperature difference, and the third temperature difference are all less than the fourth temperature difference threshold, then the rotational speed is controlled based on the first temperature difference and the second temperature difference.

5. The method according to claim 2, characterized in that, Determining the first target temperature of the vehicle based on the ambient temperature includes: Obtain the set temperature of the vehicle; The set temperature is adjusted according to the ambient temperature to obtain the third target temperature.

6. The method according to claim 1, characterized in that, The method further includes: Obtain the operating mode of the vehicle air conditioner; Determine the magnitude relationship between the ambient temperature and the temperature threshold; In the operating mode, the first evaporator and / or the second evaporator are turned on according to the size relationship.

7. The method according to claim 6, characterized in that, In the operating mode, activating the first evaporator and / or the second evaporator according to the size relationship includes: If the operating mode is cooling mode and the size relationship indicates that the ambient temperature is greater than or equal to the first temperature threshold, then the first evaporator and the second evaporator are turned on. If the operating mode is the cooling mode and the size relationship indicates that the ambient temperature is less than the first temperature threshold, then the first evaporator / or the second evaporator is turned on; If the operating mode is heating mode and the magnitude relationship indicates that the ambient temperature is less than or equal to the second temperature threshold, then the first evaporator and the second evaporator are turned on. If the operating mode is the heating mode and the magnitude relationship indicates that the ambient temperature is greater than the second temperature threshold, then the first evaporator / or the second evaporator is turned on.

8. A temperature control device, characterized in that, An apparatus for use in vehicle air conditioners, wherein the compressor of the vehicle air conditioner is connected to a first evaporator and a second evaporator respectively, the first evaporator being controlled to open and close via a first expansion valve, and the second evaporator being controlled to open and close via a second expansion valve, the apparatus comprising: The temperature acquisition module is used to acquire the ambient temperature and the first actual temperature inside the vehicle. An initial opening determination module is used to determine the first initial opening of the first expansion valve and the second initial opening of the second expansion valve based on the ambient temperature if the first evaporator and the second evaporator are turned on according to the ambient temperature indication. A target temperature determination module is used to determine a first target temperature of the first evaporator and a second target temperature of the second evaporator based on the ambient temperature. The adjustment module is used to obtain the second actual temperature of the first evaporator and the third actual temperature of the second evaporator, and adjust the speed of the compressor, the first initial opening degree and the second initial opening degree according to the ambient temperature, the first actual temperature, the second actual temperature, the third actual temperature, the first target temperature and the second target temperature.

9. A vehicle, characterized in that, The vehicles include: processor; A memory storing computer-readable instructions that, when executed by the processor, implement the method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium contains program code that can be invoked by a processor to execute the method as described in any one of claims 1 to 7.

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