Method for detecting performance of vehicle air conditioning system and vehicle

Abstract

The embodiment of the application relates to the technical field of vehicles, and discloses a performance detection method of a vehicle air conditioning system and a vehicle, which comprises the following steps: acquiring an ambient temperature of an environment in which a vehicle is located, a first initial temperature of an evaporator, and a first target temperature of the evaporator in a refrigeration mode; wherein the first target temperature is a temperature that the evaporator needs to reach when the air conditioning system is normal in refrigeration effect; when the ambient temperature is greater than the first target temperature and the first initial temperature is greater than the first target temperature, the air conditioning system is controlled to refrigerate; the real-time temperature of the evaporator is acquired, and when the real-time temperature of the evaporator is less than the first target temperature within a first preset time, it is judged that the refrigeration of the air conditioning system is normal. Therefore, whether the refrigeration function of the air conditioning system is normal can be judged based on the first initial temperature of the evaporator and the temperature change within the first preset time, and the performance of the air conditioning system can be accurately and quickly detected.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a method for testing the performance of a vehicle air conditioning system and a vehicle. Background Technology

[0002] The effectiveness of the vehicle's air conditioning is one of the factors that users consider when deciding whether to purchase a vehicle. If the air conditioning effect is not thoroughly tested during the mass production of vehicles, it is easy for problems such as poor or ineffective air conditioning to emerge in large numbers in winter or summer after the vehicles enter the market. For example, the air conditioning may not be effective for heating in winter or cooling in summer, causing user complaints and affecting the company's brand image.

[0003] Currently, when air conditioners are produced in batches during normal production, relying solely on manual sensing or external temperature equipment for judgment is insufficient to thoroughly test their performance. Furthermore, there are no accurate standards for judgment, making it impossible to accurately and quickly test the performance of air conditioners. Summary of the Invention

[0004] In view of the above problems, this application provides a method for testing the performance of a vehicle air conditioning system and a vehicle, which can accurately and quickly test the performance of the air conditioning system.

[0005] The first aspect of this application provides a performance testing method for a vehicle air conditioning system, comprising: acquiring the ambient temperature of the vehicle's environment, a first initial temperature of the evaporator, and a first target temperature of the evaporator in cooling mode; wherein the first target temperature is the temperature that the evaporator needs to reach when the air conditioning system has a normal cooling effect; controlling the air conditioning system to cool when the ambient temperature is greater than the first target temperature and the first initial temperature is greater than the first target temperature; acquiring the real-time temperature of the evaporator, and determining that the air conditioning system is cooling normally when the real-time temperature of the evaporator is less than the first target temperature within a first preset time.

[0006] In some specific embodiments, after obtaining the ambient temperature of the vehicle's environment, the first initial temperature of the evaporator, and the first target temperature of the evaporator in cooling mode, the method further includes: controlling the air conditioning system to heat when the ambient temperature is greater than the first target temperature and the first initial temperature is less than the first target temperature; obtaining the real-time temperature of the evaporator, and controlling the air conditioning system to cool when the real-time temperature of the evaporator is greater than the first preset temperature; wherein the first preset temperature is greater than the first target temperature.

[0007] In some specific embodiments, the method further includes: obtaining the initial temperature inside the vehicle; wherein the initial temperature inside the vehicle is the temperature inside the vehicle before the air conditioning system is controlled to cool; obtaining a first preset time based on the initial temperature inside the vehicle, the temperature difference between the first target temperature and the first initial temperature, and a preset relationship; wherein the preset relationship is the correspondence between the initial temperature inside the vehicle, the temperature difference, and the first preset time.

[0008] In some specific embodiments, after obtaining the ambient temperature of the vehicle's environment, the first initial temperature of the evaporator, and the first target temperature of the evaporator in cooling mode, the method includes: when the ambient temperature is lower than the first target temperature but higher than a second preset temperature, obtaining the type of the air conditioning system; wherein the second preset temperature is the lowest temperature at which the heat pump air conditioning system operates; when the air conditioning system is a heat pump air conditioning system, controlling the air conditioning system to heat; obtaining the real-time temperature of the evaporator, and when the real-time temperature of the evaporator is higher than the first preset temperature, controlling the air conditioning system to cool and obtaining the operating status of each cooling function of the air conditioning system; wherein the first preset temperature is higher than the first target temperature.

[0009] In some specific embodiments, after obtaining the ambient temperature of the vehicle's environment, the first initial temperature of the evaporator, and the first qualified temperature of the evaporator in cooling mode, the process includes: obtaining vehicle information when the ambient temperature is less than or equal to a second preset temperature; sending the vehicle information to the cloud for storage; and generating a test reminder message after the ambient temperature is greater than the preset temperature or after a preset time has elapsed.

[0010] In some specific embodiments, the method further includes: acquiring the ambient temperature of the vehicle's environment, the second initial temperature of the air outlet of the air conditioning system, and the second target temperature of the air outlet of the air conditioning system in heating mode; wherein, the second target temperature is the temperature that the air outlet needs to reach when the air conditioning system has a normal heating effect; controlling the air conditioning system to heat when the ambient temperature is lower than the second target temperature and the second initial temperature is lower than the second target temperature; sending vehicle information to the cloud for storage when the ambient temperature is higher than the second target temperature, and generating a test reminder message after the ambient temperature is lower than the preset temperature or after a preset time; acquiring the real-time temperature of the air outlet, and determining that the air conditioning system is heating normally when the real-time temperature of the air outlet is higher than the second target temperature within a second preset time.

[0011] In some specific embodiments, after obtaining the ambient temperature of the vehicle's environment, the second initial temperature of the air outlet of the air conditioning system, and the second qualified temperature of the air outlet of the air conditioning system in heating mode, the method further includes: controlling the air conditioning system to cool when the ambient temperature is lower than the second qualified temperature and the second initial temperature is higher than the second qualified temperature; obtaining the real-time temperature of the air outlet, and controlling the air conditioning system to heat when the real-time temperature of the air outlet is lower than a third preset temperature; wherein the third preset temperature is lower than the second qualified temperature.

[0012] In some specific embodiments, after obtaining the ambient temperature of the vehicle's environment, the second initial temperature of the air outlet of the air conditioning system, and the second target temperature of the air outlet of the air conditioning system in heating mode, the method further includes: controlling the air conditioning system to cool when the ambient temperature is lower than the second target temperature but higher than the fourth preset temperature; wherein the difference between the second target temperature and the fourth preset temperature is less than a preset value; obtaining the real-time temperature of the air outlet, and controlling the air conditioning system to heat when the real-time temperature of the air outlet is lower than the third preset temperature; wherein the third preset temperature is lower than the fourth preset temperature.

[0013] In some specific embodiments, the method further includes: obtaining the idle time after the vehicle rolls off the production line; when the idle time is greater than a preset time, obtaining the minimum pressure value of the air conditioning system pipeline; when the minimum pressure value is less than a preset pressure value, determining that the air conditioning system has a refrigerant shortage problem.

[0014] A second aspect of this application provides a vehicle including a processor and a memory, the processor being connected to the memory, the memory being used to store at least one executable instruction, the executable instruction causing the processor to execute the performance detection method of the vehicle air conditioning system as described above.

[0015] The beneficial technical effects of this application are at least as follows: Based on the vehicle air conditioning system performance testing method and vehicle provided in this application, the method includes: acquiring the ambient temperature of the vehicle's environment, the first initial temperature of the evaporator, and the first target temperature of the evaporator in cooling mode; wherein, the first target temperature is the temperature that the evaporator needs to reach when the air conditioning system has a normal cooling effect; controlling the air conditioning system to cool when the ambient temperature is greater than the first target temperature and the first initial temperature is greater than the first target temperature; acquiring the real-time temperature of the evaporator, and determining that the air conditioning system is cooling normally when the real-time temperature of the evaporator is less than the first target temperature within a first preset time. Therefore, it is possible to determine whether the cooling function of the air conditioning system is normal based on the first initial temperature of the evaporator and the temperature change within a first preset time, and to accurately and quickly detect the performance of the air conditioning system.

[0016] Parts lacking heating function

[0017] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0018] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0019] Figure 1 This is a flowchart illustrating an embodiment of the performance testing method for a vehicle air conditioning system provided in this application;

[0020] Figure 2 This is a flowchart illustrating another embodiment of the performance testing method for the air conditioning system provided in this application;

[0021] Figure 3 This is a flowchart illustrating another embodiment of the performance testing method for the air conditioning system provided in this application;

[0022] Figure 4 This is a flowchart illustrating another embodiment of the performance testing method for the air conditioning system provided in this application;

[0023] Figure 5 This is a flowchart illustrating another embodiment of the performance testing method for the air conditioning system provided in this application;

[0024] Figure 6 This is a flowchart illustrating another embodiment of the performance testing method for the air conditioning system provided in this application;

[0025] Figure 7 This is a flowchart illustrating another embodiment of the performance testing method for the air conditioning system provided in this application;

[0026] Figure 8 This is a flowchart illustrating another embodiment of the performance testing method for the air conditioning system provided in this application;

[0027] Figure 9 This is a flowchart illustrating another embodiment of the performance testing method for the air conditioning system provided in this application;

[0028] Figure 10 This is a schematic diagram of the structural frame of an embodiment of the vehicle provided in this application. Detailed Implementation

[0029] Exemplary embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited to the embodiments set forth herein. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive effort are within the scope of protection of the present application.

[0030] If the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, if the word "and / or" appears throughout the text, it means including three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0031] The first aspect of this application provides a method for testing the performance of a vehicle air conditioning system. This method can be performed on the vehicle itself or on an external device independent of the vehicle, without specific limitations. This method can be applied before the vehicle leaves the production line, thus testing its performance before it enters the market, ensuring customer satisfaction after the vehicle is released. This method can also be applied after the vehicle has been sold, specifically during maintenance at a 4S dealership, to test the vehicle's performance. Of course, the application of this method is not limited to the above.

[0032] Figure 1 This is a schematic flowchart of an embodiment of the performance testing method for a vehicle air conditioning system provided in this application. (In conjunction with...) Figure 1 The performance testing method for vehicle air conditioning systems includes the following steps:

[0033] S11: Obtain the ambient temperature of the vehicle's environment, the initial temperature of the evaporator, and the first target temperature of the evaporator in cooling mode; wherein, the first target temperature is the temperature that the evaporator needs to reach when the air conditioning system has a normal cooling effect.

[0034] The ambient temperature of the vehicle's surroundings can be obtained through sensors built into the vehicle or external sensors. It should be understood that the ambient temperature of the vehicle's surroundings refers to the ambient temperature within the specific, relatively small space in which the vehicle is located.

[0035] The vehicle's air conditioning system achieves heat exchange through a heat exchanger to provide heating or cooling to the vehicle interior. The evaporator, as part of the heat exchanger, has a lower surface temperature and is used for cooling by the air conditioning system. A temperature sensor can be installed on the surface of the evaporator to detect its temperature. The initial temperature of the evaporator is the temperature obtained during detection; at this point, the evaporator is generally not operating, although it can also be operating, without specific limitations.

[0036] It should be understood that since the evaporator is the main component of an air conditioning system that enables cooling, its lowest temperature is roughly the lowest temperature of the airflow blown out by the system. When the air conditioning system is in cooling mode, rapid cooling is required for good performance, necessitating a lower evaporator temperature. When the evaporator surface temperature is less than or equal to the first target temperature, the evaporator surface is relatively cold, resulting in better cooling performance.

[0037] Different air conditioning systems and application scenarios may require setting different initial target temperatures for the evaporator. In some applications, the initial target temperature can be 4°C, but it is not limited to this; for example, it could be 3°C, 5°C, etc.

[0038] S12: When the ambient temperature is greater than the first target temperature and the first initial temperature is greater than the first target temperature, control the air conditioning system to cool.

[0039] When the ambient temperature is higher than the first target temperature, if the evaporator temperature is less than or equal to the first target temperature, the real-time temperature of the evaporator can be obtained by the sensor, and the temperature measurement will not be affected by the ambient temperature. When the ambient temperature is lower than the first target temperature, the temperature measured by the sensor may be the ambient temperature, leading to inaccurate temperature measurement of the evaporator.

[0040] If the initial temperature is higher than the target temperature, it indicates that the evaporator temperature is still relatively high. If the air conditioning system is controlled to cool, the evaporator temperature may decrease. It should be understood that the air conditioning system is equipped with a controller, which can be controlled directly through the vehicle's main controller or through external devices, thereby initiating the air conditioning system to cool.

[0041] S13: Obtain the real-time temperature of the evaporator. If the real-time temperature of the evaporator is lower than the first target temperature within a first preset time, determine that the air conditioning system is cooling normally.

[0042] After the air conditioning system starts cooling, the temperature of the evaporator will drop. At this time, the temperature on the surface of the evaporator is acquired in real time by a temperature sensor on the evaporator surface. The starting point of the first preset time can be the time when the air conditioning system starts cooling, and the length of this time can be set as needed.

[0043] In some specific application scenarios, the air conditioning system operates in a specific mode and at a specific power level within the first preset time period. For example, when the air conditioning system operates within the first preset time period, it can operate at the lowest temperature, with a minimum load, internal circulation, and surface blowing mode, thus causing the system to operate at high power, resulting in a rapid drop in evaporator temperature. In this case, the first preset time can be set to a shorter value to shorten the detection time.

[0044] When controlling the air conditioning system to operate the corresponding functions, it can determine whether the corresponding functions can operate normally, thereby realizing the testing of the air conditioning system's functions. If there is a problem with the operation of a certain function, the fault information can be transmitted to the relevant terminal or cloud.

[0045] If the real-time temperature of the evaporator is lower than the first target temperature within the first preset time period, it indicates that the real-time temperature of the evaporator can reach a lower temperature, and that the evaporator can reach a lower temperature within a specific time period. This indicates that the evaporator is performing well and that the air conditioning system is cooling normally.

[0046] Conversely, if the air conditioning system fails to reach the first target temperature within the first preset time, or if it takes longer than the first preset time to reach the first target temperature, it indicates that the evaporator is not performing well and the air conditioning system is not cooling properly.

[0047] In summary, the vehicle air conditioning system performance testing method provided by the above embodiments can determine whether the air conditioning system's cooling function is normal based on the evaporator's first initial temperature and the temperature change within a first preset time, and can accurately and quickly test the air conditioning performance.

[0048] Figure 2 This is a flowchart illustrating another embodiment of the performance testing method for the air conditioning system provided in this application. (In conjunction with...) Figure 2 In some specific embodiments, after the steps of obtaining the ambient temperature of the vehicle's environment, the first initial temperature of the evaporator, and the first target temperature of the evaporator in cooling mode, i.e. after step S11 above, the method further includes:

[0049] S21: When the ambient temperature is greater than the first target temperature and the first initial temperature is less than the first target temperature, control the air conditioning system to heat.

[0050] When the ambient temperature is higher than the first target temperature, as mentioned above, the temperature of the evaporator will not be affected by the ambient temperature when measuring the temperature.

[0051] If the initial temperature is lower than the first target temperature, it indicates that the evaporator temperature is low, possibly indicating that it is currently in cooling mode or has just finished cooling. In this case, the air conditioning system should be switched to heating mode to raise the evaporator temperature, facilitating subsequent testing.

[0052] S22: Obtain the real-time temperature of the evaporator, and control the air conditioning system to cool when the real-time temperature of the evaporator is greater than the first preset temperature; wherein the first preset temperature is greater than the first target temperature.

[0053] During the evaporator's heating process, the evaporator temperature may rise at any time. Therefore, sensors are used to acquire the evaporator temperature in real time, allowing us to determine its real-time temperature. When the real-time evaporator temperature exceeds a first preset temperature, it indicates that the evaporator has reached a relatively high temperature.

[0054] It should be understood that when the first preset temperature is higher than the first qualified temperature, the difference between the first preset temperature and the first qualified temperature can be greater than a certain value, so that the evaporator will have a certain process of decreasing from the first preset temperature to the first qualified temperature, which is convenient for detection. Referring to the example in the above embodiment, when the first qualified temperature is 4°C, the first preset temperature can be set to 15°C, but it is not limited to this. For example, the first preset temperature can also be set to 14°C.

[0055] When the real-time temperature of the evaporator is higher than the first preset temperature, it means that the temperature of the evaporator has risen to a higher temperature through the heating mode. At this time, the temperature of the evaporator has a certain room to drop. At this time, the heating mode of the air conditioning system is turned off and the cooling mode is turned on to start testing the cooling effect of the air conditioning system.

[0056] After the air conditioning system is controlled to cool, the cooling effect of the air conditioning system can be tested by referring to step S13 above. That is, the real-time temperature of the evaporator is obtained, and if the real-time temperature of the evaporator is lower than the first target temperature within a first preset time, the air conditioning system is judged to be cooling normally.

[0057] Figure 3 This is a flowchart illustrating yet another embodiment of the performance testing method for a vehicle air conditioning system provided in this application. (In conjunction with...) Figure 3 In some specific embodiments, this method further includes:

[0058] S31: Obtain the initial temperature inside the vehicle; where the initial temperature inside the vehicle is the temperature inside the vehicle before the air conditioning system is controlled to cool.

[0059] It should be understood that in step S11 above, the initial interior temperature of the vehicle can be obtained when acquiring the ambient temperature of the vehicle's environment. This initial interior temperature is the temperature inside the vehicle before the subsequent steps control the air conditioning system to cool down. The initial interior temperature can be obtained through sensors inside the vehicle, but this is not a limitation.

[0060] S32: Obtain a first preset time based on the initial temperature inside the vehicle, the temperature difference between the first qualified temperature and the first initial temperature, and a preset relationship; wherein, the preset relationship is the correspondence between the initial temperature inside the vehicle, the temperature difference, and the first preset time.

[0061] Before applying this method, a complete database can be formed by establishing the correspondence between the initial temperature inside the vehicle, the temperature difference, and the first preset time based on test data, empirical data, etc., so that it can be called in this step.

[0062] It should be understood that the initial temperature inside the vehicle, as well as the temperature difference between the first target temperature and the first initial temperature, will affect the setting of the first preset time. For example, if the temperature difference between the first target temperature and the first initial temperature is large, it means that the evaporator temperature will drop more during the process of decreasing from the first initial temperature to the first target temperature. Under the condition that other factors remain unchanged, the first preset time needs to be set longer. Furthermore, the setting of the first preset time can also be adjusted based on different parameters for different vehicle models.

[0063] After obtaining the first target temperature and the first initial temperature, the temperature difference between the two is obtained. At this time, based on the ambient temperature and the temperature difference, the corresponding first preset time can be obtained from the database.

[0064] Figure 4 This is a flowchart illustrating yet another embodiment of the performance testing method for a vehicle air conditioning system provided in this application. (In conjunction with...) Figure 4 In some specific embodiments, after the steps of obtaining the ambient temperature of the vehicle's environment, the first initial temperature of the evaporator, and the first target temperature of the evaporator in cooling mode, i.e. after step S11 above, the method further includes:

[0065] S41: When the ambient temperature is lower than the first acceptable temperature but higher than the second preset temperature, obtain the type of the air conditioning system; wherein, the second preset temperature is the lowest temperature at which the heat pump air conditioning system operates.

[0066] Based on the above, when the ambient temperature is lower than the first target temperature, it indicates that the ambient temperature is low, and the temperature detection of the sensor on the evaporator will be affected by the ambient temperature. When the ambient temperature is higher than the second preset temperature, it indicates that the heat pump air conditioning system can operate in this environment.

[0067] In some applications, the second preset temperature can be set to -18℃, meaning it can operate when the ambient temperature is greater than or equal to -18℃. Of course, the setting of the second preset temperature is not limited to this and can be specifically set according to the parameters of different air conditioning systems.

[0068] S42: When the air conditioning system is a heat pump air conditioning system, control the heating of the air conditioning system.

[0069] It should be understood that a heat pump air conditioning system has both cooling and heating functions. In this case, the air conditioning system is controlled to heat, which in turn causes the temperature of the evaporator to rise.

[0070] S43: Obtain the real-time temperature of the evaporator. When the real-time temperature of the evaporator is greater than the first preset temperature, control the air conditioning system to cool and obtain the working status of each cooling function of the air conditioning system; wherein, the first preset temperature is greater than the first target temperature.

[0071] During the heating process of an air conditioner, the temperature of the evaporator changes in real time, and the real-time temperature of the evaporator is obtained through a temperature sensor.

[0072] The setting of the first preset temperature can be found in the above embodiments. When the real-time temperature of the evaporator is greater than the first preset temperature, it indicates that the temperature of the evaporator is greater than the first target temperature, and the temperature difference between the first preset temperature and the first target temperature is large. At this time, if the air conditioning system is controlled to cool, the air conditioning system can perform normal cooling.

[0073] In summary, due to the extremely low ambient temperature, the evaporator temperature test will be affected by the ambient temperature, and therefore, the cooling effect of the air conditioning system cannot be judged by measuring the evaporator temperature. However, in this situation, you can test whether each cooling function can be executed normally by activating various cooling functions in cooling mode. For example, you can test multiple functions such as maximum airflow, internal circulation, and minimum temperature. If any function fails to execute, you can provide feedback on the fault for that function.

[0074] Figure 5 This is a flowchart illustrating yet another embodiment of the performance testing method for the vehicle air conditioning system provided in this application. (In conjunction with...) Figure 5 In some specific embodiments, after the steps of obtaining the ambient temperature of the vehicle's environment, the first initial temperature of the evaporator, and the first target temperature of the evaporator in cooling mode, i.e. after step S11 above, the following is included:

[0075] S51: Obtain vehicle information when the ambient temperature is less than or equal to the second preset temperature.

[0076] Based on the above, even a heat pump air conditioning system cannot operate when the ambient temperature is less than or equal to the second preset temperature. At this time, it's impossible to test whether the air conditioning system's cooling functions can operate, and vehicle information cannot be obtained under these conditions. This vehicle information may include the VIN number, production date, and inspection date.

[0077] S52: Send vehicle information to the cloud for storage, and generate a test reminder message after the ambient temperature is higher than the preset temperature or after a preset time.

[0078] After vehicle information is uploaded and saved to the cloud, a test reminder message is generated when the ambient temperature is higher than the preset temperature or after a preset time. This means that after the temperature rises or after a period of time, a prompt can be made to test the air conditioning cooling effect and function, thereby enabling the cooling function of all vehicles to be tested without missing any vehicles.

[0079] Figure 6 This is a flowchart illustrating yet another embodiment of the performance testing method for the vehicle air conditioning system provided in this application. (In conjunction with...) Figure 6 In some specific embodiments, this method further includes:

[0080] S61: Obtain the ambient temperature of the vehicle's surroundings, the second initial temperature of the air vents of the air conditioning system, and the second target temperature of the air vents of the air conditioning system in heating mode; wherein, the second target temperature is the temperature that the air vents need to reach when the air conditioning system is heating normally.

[0081] For details on obtaining the ambient temperature of the vehicle's surroundings, please refer to the above content, which will not be repeated here. The second initial temperature at the air vent of the air conditioning system is the temperature detected at the air vent of the air conditioning system. This temperature can be detected by a temperature sensor installed at the air vent of the air conditioning system.

[0082] In some specific application scenarios, the air outlet of the air conditioning system can be the driver's foot vent. The airflow from the driver's foot vent has less heat loss. In this case, the driver's foot vent can be an air outlet that is built into the vehicle structure, rather than an artificially added air outlet.

[0083] It should be understood that in other application scenarios, the air conditioning system's air outlets can be other types of outlets, such as footwell vents for the passenger side or overhead vents for users. Since the heat loss of the airflow from different outlets varies, the relevant parameters in subsequent steps can be modified accordingly.

[0084] When the air conditioner is heating effectively, the temperature of the airflow blowing from the air conditioner's outlet will be greater than or equal to the second target temperature. Different second target temperatures can be set for different air conditioning systems, different application scenarios, and different air outlets.

[0085] S62: When the ambient temperature is lower than the second target temperature and the second initial temperature is lower than the second target temperature, control the air conditioning system to heat; when the ambient temperature is higher than the second target temperature, send the vehicle information to the cloud for storage, and generate a test reminder message after the ambient temperature is lower than the preset temperature or after a preset time has elapsed.

[0086] When the ambient temperature is lower than the second acceptable temperature, it means that the ambient temperature is not high. At this time, the temperature of the airflow at the air outlet can be accurately detected by the temperature sensor without being affected by the ambient temperature.

[0087] If the initial temperature is lower than the target temperature, it indicates that the airflow temperature at the outlet is low. In this case, the air conditioning system can be used to heat the airflow at the outlet to raise its temperature. For subsequent testing, the air conditioning system will then be controlled to heat the airflow.

[0088] In scenarios where the ambient temperature exceeds the second target temperature, the heating effect cannot be accurately assessed due to the high external temperature. In such cases, tests can be conducted to verify the functionality of each function in heating mode, and corresponding vehicle information can be recorded. This vehicle information is then sent to the cloud for storage, and a test reminder is generated when the ambient temperature falls below the preset temperature or after a preset time has elapsed. This ensures that the vehicle's heating function is tested without any omissions.

[0089] S63: Obtain the real-time temperature of the air outlet. If the real-time temperature of the air outlet is greater than the second target temperature within a second preset time, it is determined that the air conditioning system is heating normally.

[0090] When the air conditioning system is in the heating process, the temperature of the airflow at the air outlet will rise. At this time, the real-time temperature of the air outlet can be obtained by a temperature sensor installed at the air outlet.

[0091] The second preset time is set in advance. When the real-time temperature of the air outlet is greater than the second target temperature within the second preset time, it indicates that the air blown out by the air conditioning system can reach the higher temperature of the second target temperature. On the other hand, it indicates that the air conditioning system can reach the second target temperature within the second preset time period, and can achieve a relatively rapid temperature increase. Based on these two aspects, it can be concluded that the heating effect of the air conditioning system is good.

[0092] The setting of the second preset time can be referenced from the method for setting the first preset time in the above embodiments. In this case, the first preset time can be obtained based on the initial temperature inside the vehicle, the temperature difference between the second target temperature and the second initial temperature, and a preset relationship. The preset relationship refers to the correspondence between the initial temperature inside the vehicle, the temperature difference, and the second preset time.

[0093] Figure 7 This is a flowchart illustrating yet another embodiment of the performance testing method for the vehicle air conditioning system provided in this application. (In conjunction with...) Figure 7 In some specific embodiments, after obtaining the ambient temperature of the vehicle's environment, the second initial temperature of the air outlet of the air conditioning system, and the second target temperature of the air outlet of the air conditioning system in heating mode, i.e. after step S61 above, the method further includes:

[0094] S71: When the ambient temperature is lower than the second target temperature and the second initial temperature is higher than the second target temperature, control the air conditioning system to cool.

[0095] If the initial temperature is higher than the target temperature, it indicates that the temperature at the air outlet is high, and the air conditioner may be operating in heating mode. In this scenario, the heating mode cannot be used to determine whether the target temperature can be reached within the second preset time. Therefore, it is necessary to cool the air outlet to facilitate subsequent monitoring.

[0096] In some specific application scenarios, the second target temperature can be set to 45℃. Of course, this is not a limitation and can be set according to the specific parameters of the vehicle and the specific application scenario.

[0097] S72: Obtain the real-time temperature of the air outlet, and control the air conditioning system to heat when the real-time temperature of the air outlet is lower than the third preset temperature; wherein the third preset temperature is lower than the second target temperature.

[0098] During the cooling process, the real-time temperature of the air outlet is acquired by a sensor. When the real-time temperature of the air outlet is lower than the third preset temperature, it indicates that the temperature of the air outlet is lower than the second target temperature, and there is a certain interval between the temperature difference and the second target temperature. Considering the application scenario where the second target temperature is set to 45℃, the third preset temperature can be set to 20℃.

[0099] When the real-time temperature at the air outlet is lower than the third preset temperature, the air conditioning system is controlled to heat, causing the temperature at the air outlet to rise. For the subsequent judgment process of heating performance, please refer to step S63 above. That is, the subsequent process will acquire the real-time temperature of the air outlet. When the real-time temperature of the air outlet is higher than the second target temperature within the second preset time, the air conditioning system is judged to be heating normally.

[0100] Figure 8 This is a flowchart illustrating yet another embodiment of the performance testing method for a vehicle air conditioning system provided in this application. (In conjunction with...) Figure 8In some specific embodiments, after obtaining the ambient temperature of the vehicle's environment, the second initial temperature of the air outlet of the air conditioning system, and the second target temperature of the air outlet of the air conditioning system in heating mode, i.e. after step S61 above, the method further includes:

[0101] S81: When the ambient temperature is lower than the second target temperature but higher than the fourth preset temperature, control the air conditioning system to cool; wherein the difference between the second target temperature and the fourth preset temperature is less than the preset value.

[0102] In a scenario where the second target temperature is set to 45℃, the fourth preset temperature can be set to 28℃. In this case, although the ambient temperature is lower than the second target temperature, it is higher than the fourth preset temperature. The difference between the ambient temperature and the second target temperature is small, meaning the temperature detected at the vehicle's air vents is likely the ambient temperature, making it difficult to assess heating performance during subsequent warm-up processes. Therefore, the air conditioning system is controlled to cool.

[0103] S82: Obtain the real-time temperature of the air outlet, and control the air conditioning system to heat when the real-time temperature of the air outlet is lower than the third preset temperature; wherein the third preset temperature is lower than the fourth preset temperature.

[0104] During the cooling process of the air conditioning system, the real-time temperature of the air outlet is obtained. Based on the above, if the third preset temperature can be set to 20℃, the fourth preset temperature can be set to 28℃.

[0105] When the real-time temperature at the air outlet is lower than the third preset temperature, it indicates that the temperature difference between the air outlet and the second target temperature is large. At this time, the heating performance of the air conditioning system can be controlled to obtain the heating performance of the air conditioner. The subsequent steps can be found in step S63 above.

[0106] Figure 9 This is a flowchart illustrating an embodiment of the performance testing method for a vehicle air conditioning system provided in this application. (In conjunction with...) Figure 9 In some specific embodiments, the method further includes:

[0107] S91: Obtain the idle time after the vehicle rolls off the production line.

[0108] After a vehicle rolls off the production line, it may be idle for a period of time before leaving the factory. This period is known as the vehicle's idle time.

[0109] S92: When the idle time is longer than the preset time, obtain the minimum pressure value of the air conditioning system pipeline; when the minimum pressure value is less than the preset pressure value, determine that there is a refrigerant shortage problem in the air conditioning system.

[0110] If the idle time exceeds the preset time, it indicates that the vehicle has been idle for an extended period, and there may be a refrigerant leak. In some application scenarios, the preset time can be set to 72 hours.

[0111] At this point, the pressure value can be detected by sensors installed on the air conditioning system pipes. The preset pressure value is set in advance so that when the minimum pressure value is lower than the preset pressure value, it indicates that there is a refrigerant shortage problem, and the vehicle may have a refrigerant leak problem.

[0112] Of course, after the vehicle rolls off the production line, the minimum and maximum pressure values ​​of the air conditioning pipes can be obtained. At this time, if the minimum pressure value is less than a preset specific value, it indicates that there is a lack of refrigerant, and if the maximum pressure value is greater than a preset specific value, it indicates that there is too much refrigerant.

[0113] A second aspect of this application provides a vehicle 20, Figure 10 This is a schematic diagram of the structural frame of an embodiment of the vehicle 20 provided in this application.

[0114] Combination Figure 10 The vehicle 20 includes a processor 21 and a memory 22. The processor 21 is connected to the memory 22. The memory 22 is used to store at least one executable instruction. The executable instruction causes the processor 21 to execute the performance testing method of the vehicle air conditioning system as described above.

[0115] The processor 21 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application. The one or more processors 21 included in the vehicle may be of the same type, such as one or more CPUs; or they may be of different types, such as one or more CPUs and one or more ASICs. The memory 22 may include high-speed RAM and may also include non-volatile memory, such as at least one disk storage device.

[0116] In summary, the performance testing method for the vehicle air conditioning system and the vehicle 20 provided in this application include: acquiring the ambient temperature of the vehicle's environment, the first initial temperature of the evaporator, and the first target temperature of the evaporator in cooling mode; wherein, the first target temperature is the temperature that the evaporator needs to reach when the air conditioning system has a normal cooling effect; controlling the air conditioning system to cool when the ambient temperature is greater than the first target temperature and the first initial temperature is greater than the first target temperature; acquiring the real-time temperature of the evaporator, and determining that the air conditioning system is cooling normally when the real-time temperature of the evaporator is less than the first target temperature within a first preset time. Therefore, it is possible to determine whether the cooling function of the air conditioning system is normal based on the first initial temperature of the evaporator and the temperature change within a first preset time, and to accurately and quickly test the performance of the air conditioning system.

[0117] The above description is merely an optional embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A performance testing method for a vehicle air conditioning system, characterized in that, include: The system acquires the ambient temperature of the vehicle's environment, the first initial temperature of the evaporator, and the first target temperature of the evaporator in cooling mode; wherein, the first target temperature is the temperature that the evaporator needs to reach when the air conditioning system has a normal cooling effect. When the ambient temperature is greater than the first target temperature and the first initial temperature is less than the first target temperature, the air conditioning system is controlled to heat. The real-time temperature of the evaporator is obtained, and the air conditioning system is controlled to cool when the real-time temperature of the evaporator is greater than a first preset temperature; wherein, the first preset temperature is greater than the first target temperature; When the ambient temperature is greater than the first target temperature and the first initial temperature is greater than the first target temperature, the air conditioning system is controlled to cool. The real-time temperature of the evaporator is obtained. If the real-time temperature of the evaporator is lower than the first target temperature within a first preset time, the air conditioning system is judged to be cooling normally.

2. The performance testing method for a vehicle air conditioning system according to claim 1, characterized in that, The method further includes: Obtain the initial temperature inside the vehicle; wherein, the initial temperature inside the vehicle is the temperature inside the vehicle before the air conditioning system is controlled to cool; The first preset time is obtained based on the initial temperature inside the vehicle, the temperature difference between the first qualified temperature and the first initial temperature, and a preset relationship; wherein, the preset relationship is the correspondence between the initial temperature inside the vehicle, the temperature difference, and the first preset time.

3. The performance testing method for a vehicle air conditioning system according to claim 1, characterized in that, After obtaining the ambient temperature of the vehicle's environment, the first initial temperature of the evaporator, and the first target temperature of the evaporator in cooling mode, the process includes: When the ambient temperature is lower than the first acceptable temperature but higher than the second preset temperature, the type of the air conditioning system is obtained; wherein, the second preset temperature is the lowest temperature at which the heat pump air conditioning system operates; When the air conditioning system is a heat pump air conditioning system, the air conditioning system is controlled to heat. The real-time temperature of the evaporator is obtained. When the real-time temperature of the evaporator is greater than a first preset temperature, the air conditioning system is controlled to cool and the working status of each cooling function of the air conditioning system is obtained; wherein, the first preset temperature is greater than the first target temperature.

4. The performance testing method for a vehicle air conditioning system according to claim 3, characterized in that, After obtaining the ambient temperature of the vehicle's environment, the first initial temperature of the evaporator, and the first target temperature of the evaporator in cooling mode, the process includes: When the ambient temperature is less than or equal to the second preset temperature, the vehicle information of the vehicle is obtained; The vehicle information is sent to the cloud for storage, and a test reminder message is generated after the ambient temperature is higher than the preset temperature or after a preset time.

5. The performance testing method for a vehicle air conditioning system according to claim 1, characterized in that, The method further includes: The system acquires the ambient temperature of the vehicle's environment, the second initial temperature of the air outlet of the air conditioning system, and the second target temperature of the air outlet of the air conditioning system in heating mode; wherein, the second target temperature is the temperature that the air outlet needs to reach when the air conditioning system has a normal heating effect. When the ambient temperature is lower than the second target temperature and the second initial temperature is lower than the second target temperature, the air conditioning system is controlled to heat; when the ambient temperature is higher than the second target temperature, the vehicle information is sent to the cloud for storage, and a test reminder message is generated after the ambient temperature is lower than the preset temperature or after a preset time. The real-time temperature of the air outlet is obtained. If the real-time temperature of the air outlet is greater than the second target temperature within a second preset time, the air conditioning system is judged to be heating normally.

6. The performance testing method for a vehicle air conditioning system according to claim 5, characterized in that, After obtaining the ambient temperature of the vehicle's surroundings, the second initial temperature of the air vents of the air conditioning system, and the second target temperature of the air vents of the air conditioning system in heating mode, the method further includes: When the ambient temperature is lower than the second target temperature and the second initial temperature is higher than the second target temperature, the air conditioning system is controlled to cool. The real-time temperature of the air outlet is obtained, and when the real-time temperature of the air outlet is less than a third preset temperature, the air conditioning system is controlled to heat; wherein the third preset temperature is less than the second target temperature.

7. The performance testing method for a vehicle air conditioning system according to claim 5, characterized in that, After obtaining the ambient temperature of the vehicle's surroundings, the second initial temperature of the air vents of the air conditioning system, and the second target temperature of the air vents of the air conditioning system in heating mode, the method further includes: When the ambient temperature is lower than the second target temperature and higher than the fourth preset temperature, the air conditioning system is controlled to cool; wherein the difference between the second target temperature and the fourth preset temperature is less than a preset value; The real-time temperature of the air outlet is obtained, and when the real-time temperature of the air outlet is less than a third preset temperature, the air conditioning system is controlled to heat; wherein the third preset temperature is less than the fourth preset temperature.

8. The performance testing method for a vehicle air conditioning system according to claim 1, characterized in that, The method further includes: Obtain the idle time after the vehicle rolls off the production line; When the idle time is greater than a preset time, the lowest pressure value of the air conditioning system pipeline is obtained; When the minimum pressure value is less than the preset pressure value, it is determined that the air conditioning system has a refrigerant shortage problem.

9. A vehicle, characterized in that, The vehicle includes a processor and a memory, the processor being connected to the memory, the memory being used to store at least one executable instruction, the executable instruction causing the processor to execute the performance testing method of the vehicle air conditioning system as described in any one of claims 1-8.

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