Vehicle air conditioner control method, device, equipment and storage medium

Abstract

This invention discloses a vehicle air conditioning control method, device, equipment, and storage medium, belonging to the field of vehicle control technology. Upon receiving an ignition signal, the invention starts the vehicle's engine and acquires the current temperature information. Based on the current temperature information, it determines whether liquid refrigerant is present in the vehicle air conditioning compressor. If present, the compressor is started, and the compressor is controlled to run synchronously with the engine. By using this method, when a violent liquid refrigerant impact is detected inside the compressor, the compressor is controlled to run synchronously with the engine after engine ignition. The high-speed operating noise during engine ignition masks the compressor starting noise, improving the comfort of the vehicle's air conditioning system without requiring additional noise reduction equipment and thus not increasing the overall vehicle cost.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and in particular to a vehicle air conditioning control method, device, equipment, and storage medium. Background Technology

[0002] In autumn and winter, the temperature difference between day and night is significant, and the refrigerant in the vehicle's air conditioning system is prone to liquefaction. Since the compressor is located at the lowest point in the entire air conditioning system, a large amount of liquid refrigerant will accumulate in the compressor cavity. When the compressor is started for the first time after driving (for example, when used for defrosting and defogging in autumn and winter), a violent impact of liquid refrigerant will occur inside the compressor. The impact will cause the compressor body to vibrate violently and produce obvious noise, resulting in a poor comfort experience for passengers.

[0003] To avoid drivers hearing noticeable compressor noise inside the vehicle, the main technical solutions currently employed are as follows: ① Using a compressor clutch structure with better shock absorption to reduce the level of vibration transmitted from the compressor into the vehicle, for example, using a full-circumference rubber clutch structure with more rubber material; ② Improving the overall vehicle sound insulation to reduce the level of compressor operating noise transmitted from the engine compartment to the passenger compartment, for example, using materials with better sound insulation and increasing the size / thickness of sound insulation components. The above solutions can improve the noise level of the compressor during initial startup to some extent, but they also significantly increase the cost of the entire vehicle, resulting in poor cost-effectiveness.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this invention is to provide a vehicle air conditioning control method, device, equipment, and storage medium, aiming to solve the technical problem that current solutions for improving the noise level during the initial start-up of the compressor significantly increase the overall vehicle cost and have poor cost-effectiveness.

[0006] To achieve the above objectives, the present invention provides a vehicle air conditioning control method, the vehicle air conditioning control method comprising the following steps:

[0007] Upon receiving the ignition signal, the vehicle's engine is started, and the current temperature information is obtained.

[0008] Determine whether the compressor of the vehicle's air conditioning system contains liquid refrigerant based on the current temperature information;

[0009] If present, the compressor is started, and the compressor is controlled to operate synchronously with the engine.

[0010] Optionally, determining whether the compressor of the vehicle air conditioner contains liquid refrigerant based on the current temperature information includes:

[0011] Determine the target refrigerant saturation pressure value based on the current temperature information;

[0012] Obtain the current refrigerant pressure value inside the vehicle's air conditioning compressor;

[0013] When the current refrigerant pressure is less than the target refrigerant saturation pressure, it is determined that liquid refrigerant exists in the compressor.

[0014] Optionally, starting the compressor and controlling the compressor to operate synchronously with the engine includes:

[0015] The compressor is started at a preset time after the ignition signal is received;

[0016] The compressor and the engine are controlled to operate synchronously based on the target synchronization duration.

[0017] Optionally, the vehicle air conditioning control method further includes:

[0018] Determine the temperature range corresponding to the cooling water temperature value;

[0019] Based on the temperature range, determine the target relationship curve between the engine speed after cold ignition and the time after ignition;

[0020] The target synchronization duration is calculated based on the target relationship curve.

[0021] Optionally, calculating the target synchronization duration based on the target relationship curve includes:

[0022] Based on the target relationship curve, query the engine speed corresponding to the preset time.

[0023] The target synchronization duration is calculated based on the preset transmission ratio, the engine speed corresponding to the preset time, and preset parameters. The preset transmission ratio is determined by the flywheel diameter of the engine and the pulley diameter of the compressor.

[0024] Optionally, after controlling the compressor and the engine to operate synchronously based on the target synchronization duration, the method further includes:

[0025] Record the operating time of the compressor;

[0026] When the compressor's operating time reaches the target synchronization time, the compressor is controlled to stop synchronous operation.

[0027] Optionally, after the compressor is stopped, the method further includes:

[0028] Obtain the historical operating parameters of the vehicle air conditioner prior to receiving the ignition signal;

[0029] After controlling the compressor to stop synchronous operation, the current operating parameters of the vehicle air conditioner are adjusted to the historical operating parameters.

[0030] Furthermore, to achieve the above objectives, the present invention also proposes a vehicle air conditioning control device, the vehicle air conditioning control device comprising:

[0031] The acquisition module is used to start the vehicle's engine and acquire the current temperature information after receiving the ignition signal;

[0032] The detection module is used to determine whether there is liquid refrigerant in the compressor of the vehicle air conditioner based on the current temperature information;

[0033] A control module is used to start the compressor if it exists, and to control the compressor to operate synchronously with the engine.

[0034] In addition, to achieve the above objectives, the present invention also proposes an in-vehicle air conditioning control device, the in-vehicle air conditioning control device comprising: a memory, a processor, and an in-vehicle air conditioning control program stored in the memory and running on the processor, the in-vehicle air conditioning control program being configured to implement the in-vehicle air conditioning control method as described above.

[0035] In addition, to achieve the above objectives, the present invention also proposes a storage medium storing an in-vehicle air conditioning control program, which, when executed by a processor, implements the in-vehicle air conditioning control method as described above.

[0036] Upon receiving an ignition signal, this invention starts the vehicle's engine and acquires the current temperature information. Based on the current temperature information, it determines whether liquid refrigerant is present in the vehicle's air conditioning compressor. If present, the compressor is started, and the compressor is controlled to run synchronously with the engine. In this way, when a violent liquid refrigerant impact is detected inside the compressor, the compressor is controlled to run synchronously with the engine after engine ignition. The high-speed operating noise during engine ignition is used to mask the compressor starting noise, improving the comfort of the vehicle's air conditioning system. At the same time, no additional noise reduction equipment is required, and the overall vehicle cost is not increased. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the vehicle air conditioning control device in the hardware operating environment involved in the embodiments of the present invention;

[0038] Figure 2 This is a flowchart illustrating the first embodiment of the vehicle air conditioning control method of the present invention;

[0039] Figure 3This is a characteristic curve showing the relationship between refrigerant saturation pressure and temperature in one embodiment of the vehicle air conditioning control method of the present invention;

[0040] Figure 4 This is a flowchart illustrating the second embodiment of the vehicle air conditioning control method of the present invention;

[0041] Figure 5 This is a curve showing the relationship between the engine speed after cold ignition and the time after ignition in one embodiment of the vehicle air conditioning control method of the present invention;

[0042] Figure 6 This is a structural block diagram of the first embodiment of the vehicle air conditioning control device of the present invention.

[0043] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0045] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of the vehicle air conditioning control device in the hardware operating environment involved in the embodiments of the present invention.

[0046] like Figure 1 As shown, the vehicle air conditioning control device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen and an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (RAM) or a stable non-volatile memory (NVM), such as a disk drive. The memory 1005 may also optionally be a storage device independent of the aforementioned processor 1001.

[0047] Those skilled in the art will understand that Figure 1The structure shown does not constitute a limitation on the vehicle air conditioning control device, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0048] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and a vehicle air conditioning control program.

[0049] exist Figure 1 In the vehicle air conditioning control device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the vehicle air conditioning control device of the present invention can be set in the vehicle air conditioning control device. The vehicle air conditioning control device calls the vehicle air conditioning control program stored in the memory 1005 through the processor 1001 and executes the vehicle air conditioning control method provided in the embodiment of the present invention.

[0050] This invention provides a vehicle air conditioning control method, referring to... Figure 2 , Figure 2 This is a flowchart illustrating the first embodiment of a vehicle air conditioning control method according to the present invention.

[0051] In this embodiment, the vehicle air conditioning control method includes the following steps:

[0052] Step S10: After receiving the ignition signal, start the vehicle's engine and obtain the current temperature information.

[0053] In this embodiment, the executing entity can be the vehicle-mounted air conditioning control device, which has functions such as data processing, data communication, and program execution. The vehicle-mounted air conditioning control device can be a vehicle controller or similar equipment. Of course, other devices with similar functions can also be used, and this embodiment does not limit this. For ease of explanation, this embodiment uses a vehicle-mounted air conditioning control device as an example.

[0054] It should be noted that during autumn and winter, the significant temperature difference between day and night makes the refrigerant in the vehicle's air conditioning system circuit prone to liquefaction. Since the compressor is located at a low point in the entire air conditioning system, a large amount of liquid refrigerant accumulates in the compressor cavity. When the compressor is started for the first time after driving (e.g., during defrosting and defogging in autumn and winter), a violent impact of the liquid refrigerant occurs inside the compressor. This impact causes severe vibration of the compressor body and produces noticeable noise, resulting in a poor comfort experience for passengers. To avoid the driver hearing significant compressor noise inside the vehicle, the current technical solutions mainly include the following two: ① Using a compressor clutch structure with better shock absorption to reduce the level of vibration transmitted from the compressor into the vehicle, for example, using a full-circumference rubber clutch structure with more rubber material; ② Improving the overall vehicle sound insulation to reduce the level of compressor operating noise transmitted from the engine compartment to the passenger compartment, for example, using materials with better sound insulation and increasing the size / thickness of sound insulation components. These solutions can improve the noise level during the first compressor start-up to some extent, but they also significantly increase the overall vehicle development cost, resulting in poor cost-effectiveness.

[0055] To address the aforementioned technical issues, this embodiment starts the vehicle's engine upon receiving the ignition signal and acquires the current temperature information. Based on the current temperature information, it determines whether liquid refrigerant exists in the vehicle's air conditioning compressor. If present, the compressor is started, and the compressor is controlled to run synchronously with the engine. By using this method, when a violent liquid refrigerant impact is detected inside the compressor, the compressor is controlled to run synchronously with the engine after engine ignition. The high-speed operating noise during engine ignition is used to mask the compressor's starting noise, improving the comfort of the vehicle's air conditioning system. Furthermore, no additional noise reduction equipment is required, thus not increasing the overall vehicle cost.

[0056] In this embodiment, the situation is that a large amount of liquid refrigerant will accumulate in the compressor cavity. When the user uses the vehicle air conditioner, the liquid refrigerant inside the compressor will violently collide, thereby generating noise and affecting the user experience. In this embodiment, before controlling the compressor to run synchronously with the engine, it is necessary to detect and judge whether a large amount of liquid refrigerant has accumulated in the compressor cavity.

[0057] In this specific implementation, the high-speed operation of the engine during the initial ignition phase masks the compressor noise. The initial ignition phase refers to the period from receiving the ignition signal to starting the engine. The determination of whether a large amount of liquid refrigerant has accumulated in the compressor cavity is also made during this period. Specifically, upon receiving the ignition signal and starting the engine, it is necessary to obtain the current temperature information. This current temperature information is used to determine whether there is liquid refrigerant in the compressor cavity. In this embodiment, the current temperature information includes the temperature of the cooling water, the temperature of the refrigerant, or the ambient temperature.

[0058] Step S20: Determine whether the compressor of the vehicle air conditioner contains liquid refrigerant based on the current temperature information.

[0059] In specific implementation, after obtaining the current temperature information, this embodiment can further determine whether there is a risk of liquid refrigerant accumulating in the compressor of the vehicle air conditioner based on the current temperature information. Specifically, in this embodiment, the target refrigerant saturation pressure value can be obtained based on the current temperature information, and then the current refrigerant pressure value in the compressor of the vehicle air conditioner can be obtained. Then, the current refrigerant pressure value is compared with the target refrigerant saturation pressure value.

[0060] If the current actual refrigerant pressure is greater than or equal to the target refrigerant saturation pressure, it indicates that the risk of liquid refrigerant accumulating in the vehicle air conditioning compressor is relatively small. In this case, in this embodiment, it is not necessary to control the compressor to run synchronously with the engine when the engine is ignited and started.

[0061] If the actual refrigerant pressure is less than the target refrigerant saturation pressure, it indicates a high risk of liquid refrigerant accumulating inside the vehicle air conditioning compressor. When the user uses the vehicle air conditioning, violent liquid refrigerant collisions can easily occur inside the compressor, resulting in significant noise and affecting the user. In this case, this embodiment requires controlling the compressor to run synchronously with the engine when the engine is ignited.

[0062] It is further important to emphasize that the refrigerant saturation pressure inside the compressor is related to the ambient temperature, for example... Figure 3 As shown, Figure 3 In this diagram, T1 represents the ambient temperature, and Pd1 represents the refrigerant saturation pressure. The higher the ambient temperature, the higher the corresponding refrigerant saturation pressure.

[0063] Step S30: If present, start the compressor and control the compressor to run synchronously with the engine.

[0064] In practice, if liquid refrigerant is detected in the compressor, the compressor will be started in this embodiment, and then the compressor will be controlled to run synchronously with the engine when the engine is ignited.

[0065] It should be noted that the compressor and engine operate synchronously without the user's awareness. That is, when the compressor and engine are running synchronously, only the compressor is started, and other air conditioning system-related equipment does not work. For example, the A / C indicator light on the air conditioning panel is not lit, the blower is stopped, and the radiator fan is stopped. The synchronous operation of the compressor and engine is to discharge the accumulated liquid refrigerant, and at the same time, the high speed of the engine during ignition is used to mask the impact noise of the compressor discharging liquid refrigerant.

[0066] Furthermore, in this embodiment, the compressor and engine are controlled to run synchronously based on the target synchronization runtime. The compressor runtime is recorded from the moment the compressor starts. When the compressor runtime reaches the target synchronization runtime, the compressor will be controlled to stop running. It can be assumed that the compressor has discharged the accumulated liquid refrigerant at this time.

[0067] Furthermore, after the compressor stops running, this embodiment also acquires the historical operating parameters of the vehicle's air conditioning system before receiving the ignition signal, and then adjusts the current operating parameters of the vehicle's air conditioning system to the historical operating parameters. The historical operating parameters in this embodiment include at least the settings for internal / external circulation mode, air conditioning temperature, fan speed, and airflow mode. If the vehicle's air conditioning system was off before ignition, it will remain off after the compressor stops operating synchronously in this embodiment. However, if the vehicle's air conditioning system was on before ignition, it will be turned on again after the compressor stops operating synchronously in this embodiment. Simultaneously, the air conditioning panel settings, such as temperature setting, air vent mode, blower speed, and internal / external circulation mode, will be automatically set by the user according to the settings before ignition.

[0068] In this embodiment, after receiving the ignition signal, the vehicle's engine is started, and the current temperature information is obtained. Based on the current temperature information, it is determined whether there is liquid refrigerant in the vehicle's air conditioning compressor. If so, the compressor is started, and the compressor is controlled to run synchronously with the engine. In this way, when a violent liquid refrigerant impact is detected inside the compressor, the compressor is controlled to run synchronously with the engine after the engine is started. The high-speed operating noise during the engine ignition phase is used to mask the compressor starting noise, improving the comfort of the vehicle's air conditioning system. At the same time, no additional noise reduction equipment is required, and the overall vehicle cost is not increased.

[0069] refer to Figure 4 , Figure 4 This is a flowchart illustrating a second embodiment of a vehicle air conditioning control method according to the present invention.

[0070] Based on the first embodiment described above, in the vehicle air conditioning control method of this embodiment, step S30 specifically includes:

[0071] Step S301: Start the compressor at a preset time after receiving the ignition signal.

[0072] In this implementation, the moment the ignition signal is received is taken as the starting point. In this embodiment, the compressor is started at a preset time after the ignition signal is received, for example, the compressor is started X1 seconds after the ignition signal is received. The preset time is set so that the vehicle's processor can complete the calculation of the target synchronization time after obtaining the coolant temperature value. The specific time can be set by the user, and this embodiment does not impose any restrictions on it.

[0073] Step S302: Control the compressor and the engine to operate synchronously based on the target synchronization duration.

[0074] In specific implementation, after the compressor starts, this embodiment controls the compressor and engine to run synchronously. Specifically, in this embodiment, the compressor and engine can be controlled to run synchronously based on the target synchronization duration.

[0075] In this specific implementation, the target synchronization duration can be calculated using the engine speed at a preset time, the preset transmission ratio, and preset parameters. The engine speed at the preset time can be obtained from the target relationship curve between the engine speed after cold ignition and the time after ignition. The target relationship curve between the engine speed after cold ignition and the time after ignition can be referenced... Figure 5 As shown, based on Figure 5 The engine speed at the preset time can then be retrieved. In this embodiment, the target relationship curve between the engine speed after cold ignition and the time after ignition is related to the coolant temperature. Specifically, after obtaining the current temperature information, it is necessary to first determine the temperature range corresponding to the current temperature information, and then determine the target relationship curve between the engine speed after cold ignition and the time after ignition based on this temperature range. In this embodiment, the current temperature information is used as the engine coolant temperature value for explanation. For example, assuming the coolant temperature value is T, the target relationship curves corresponding to T < T1, T1 ≤ T ≤ T2, and T2 ≤ T ≤ T3 are all different. Figure 5 The temperature range shown is merely an example and is not intended to limit the target relationship curve in this embodiment.

[0076] Furthermore, to ensure the liquid refrigerant inside the compressor can be discharged, the compressor needs to rotate at least one revolution to completely expel the accumulated liquid refrigerant. Therefore, according to the transmission ratio between the compressor pulley and the engine flywheel, the engine needs to rotate at least k revolutions, i.e., k = (R_compressor) / (R_crank), where R_crank represents the engine flywheel diameter and R_compressor represents the compressor pulley diameter. After obtaining the above parameters, the target synchronization duration can be calculated in this embodiment, i.e., [f(X1) - fx(X1 + ΔT)] / 120 * ΔT ≥ k, where ΔT represents the synchronization runtime, X1 represents the preset time, and f(X1) and fx(X1 + ΔT) represent the engine speed at time X1 and X1 + ΔT after ignition (the unit of speed is rpm, revolutions per minute), which can be found in the target relationship curve between the engine speed after cold ignition and the time after ignition.

[0077] This embodiment starts the compressor at a preset time after receiving the ignition signal, determines the temperature range corresponding to the current temperature information, and determines the target relationship curve between the engine speed after cold ignition and the time after ignition based on the temperature range. Based on the target relationship curve, it queries the engine speed corresponding to the preset time. It calculates the target synchronization duration based on the preset transmission ratio, the engine speed corresponding to the preset time, and preset parameters. The preset transmission ratio is determined by the flywheel diameter of the engine and the pulley diameter of the compressor. Based on the target synchronization duration, it controls the compressor and the engine to run synchronously. Through the above, the synchronization duration can be accurately calculated. By controlling the compressor and the engine to run synchronously according to the synchronization duration, it can ensure that the compressor can discharge liquid refrigerant and that the sound of engine ignition can mask the liquid refrigerant impact noise of the compressor.

[0078] Furthermore, this embodiment of the invention also proposes a storage medium storing an in-vehicle air conditioning control program, which, when executed by a processor, implements the steps of the in-vehicle air conditioning control method described above.

[0079] Since this storage medium adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0080] Reference Figure 6 , Figure 6 This is a structural block diagram of the first embodiment of the vehicle air conditioning control device of the present invention.

[0081] like Figure 6 As shown, the vehicle air conditioning control device proposed in this embodiment of the invention includes:

[0082] The acquisition module 10 is used to start the vehicle's engine and acquire the current temperature information after receiving the ignition signal.

[0083] The detection module 20 is used to determine whether there is liquid refrigerant in the compressor of the vehicle air conditioner based on the current temperature information.

[0084] The control module 30 is used to start the compressor if it exists, and to control the compressor to run synchronously with the engine.

[0085] In this embodiment, after receiving the ignition signal, the vehicle's engine is started, and the current temperature information is obtained. Based on the current temperature information, it is determined whether there is liquid refrigerant in the vehicle's air conditioning compressor. If so, the compressor is started, and the compressor is controlled to run synchronously with the engine. In this way, when a violent liquid refrigerant impact is detected inside the compressor, the compressor is controlled to run synchronously with the engine after the engine is started. The high-speed operating noise during the engine ignition phase is used to mask the compressor starting noise, improving the comfort of the vehicle's air conditioning system. At the same time, no additional noise reduction equipment is required, and the overall vehicle cost is not increased.

[0086] In one embodiment, the detection module 20 is further configured to determine the target refrigerant saturation pressure value based on the current temperature information; obtain the current refrigerant pressure value inside the vehicle air conditioning compressor; and determine that liquid refrigerant exists in the compressor when the current refrigerant pressure value is less than the target refrigerant saturation pressure value.

[0087] In one embodiment, the control module 30 is further configured to start the compressor at a preset time after receiving the ignition signal; and control the compressor to operate synchronously with the engine based on a target synchronization duration.

[0088] In one embodiment, the vehicle air conditioning control device further includes a processing module;

[0089] The processing module is used to determine the temperature range corresponding to the cooling water temperature value; determine the target relationship curve between the engine speed after cold ignition and the time after ignition based on the temperature range; and calculate the target synchronization duration based on the target relationship curve.

[0090] In one embodiment, the processing module is further configured to query the engine speed corresponding to the preset time based on the target relationship curve; calculate the target synchronization duration according to the preset transmission ratio, the engine speed corresponding to the preset time, and preset parameters, wherein the preset transmission ratio is determined by the flywheel diameter of the engine and the pulley diameter of the compressor.

[0091] In one embodiment, the control module 30 is further configured to record the running time of the compressor; and when the running time of the compressor reaches the target synchronization time, control the compressor to stop synchronous operation.

[0092] In one embodiment, the control module 30 is further configured to acquire the historical operating parameters of the vehicle air conditioner before receiving the ignition signal; and after controlling the compressor to stop synchronous operation, adjust the current operating parameters of the vehicle air conditioner to the historical operating parameters.

[0093] It should be understood that the above are merely illustrative examples and do not constitute any limitation on the technical solution of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any restrictions on this.

[0094] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of this invention. In practical applications, those skilled in the art can select some or all of the workflow to achieve the purpose of this embodiment according to actual needs, and no restrictions are imposed here.

[0095] In addition, for technical details not described in detail in this embodiment, please refer to the vehicle air conditioning control method provided in any embodiment of the present invention, which will not be repeated here.

[0096] Furthermore, it should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0097] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0098] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory (ROM) / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0099] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

[0100] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

Claims

1. A vehicle air-conditioning control method characterized by comprising: The vehicle air conditioning control method includes: Upon receiving the ignition signal, the vehicle's engine is started, and the current temperature information is obtained. Determine whether the compressor of the vehicle's air conditioning system contains liquid refrigerant based on the current temperature information; If present, the compressor is started, and the compressor is controlled to operate synchronously with the engine; The step of starting the compressor and controlling the compressor to operate synchronously with the engine includes: The compressor is started at a preset time after the ignition signal is received; The compressor and the engine are controlled to operate synchronously based on the target synchronization duration. The current temperature information includes the engine coolant temperature value, and the vehicle air conditioning control method further includes: Determine the temperature range corresponding to the cooling water temperature value; Based on the temperature range, determine the target relationship curve between the engine speed after cold ignition and the time after ignition; The target synchronization duration is calculated based on the target relationship curve.

2. The vehicle-mounted air conditioning control method according to claim 1, characterized by, The step of determining whether the compressor of the vehicle air conditioner contains liquid refrigerant based on the current temperature information includes: Determine the target refrigerant saturation pressure value based on the current temperature information; Obtain the current refrigerant pressure value inside the vehicle's air conditioning compressor; When the current refrigerant pressure is less than the target refrigerant saturation pressure, it is determined that liquid refrigerant exists in the compressor.

3. The vehicle-mounted air conditioning control method according to claim 1, characterized by, The step of calculating the target synchronization duration based on the target relationship curve includes: Based on the target relationship curve, query the engine speed corresponding to the preset time. The target synchronization duration is calculated based on the preset transmission ratio, the engine speed corresponding to the preset time, and preset parameters. The preset transmission ratio is determined by the flywheel diameter of the engine and the pulley diameter of the compressor.

4. The vehicle-mounted air conditioning control method according to claim 1, characterized by, After controlling the compressor and the engine to operate synchronously based on the target synchronization duration, the method further includes: Record the operating time of the compressor; When the compressor's operating time reaches the target synchronization time, the compressor is controlled to stop synchronous operation.

5. The vehicle-mounted air conditioning control method according to claim 4, characterized by, After the compressor is stopped, the following steps are also included: Obtain the historical operating parameters of the vehicle air conditioner prior to receiving the ignition signal; After controlling the compressor to stop synchronous operation, the current operating parameters of the vehicle air conditioner are adjusted to the historical operating parameters.

6. A vehicle air-conditioning control device characterized by comprising: The vehicle air conditioning control device includes: The acquisition module is used to start the vehicle's engine and acquire the current temperature information after receiving the ignition signal; The detection module is used to determine whether there is liquid refrigerant in the compressor of the vehicle air conditioner based on the current temperature information; A control module is used to start the compressor if it exists, and to control the compressor to operate synchronously with the engine; The control module is also used to start the compressor at a preset time after receiving the ignition signal; and to control the compressor to operate synchronously with the engine based on the target synchronization duration. The processing module is used to determine the temperature range corresponding to the cooling water temperature value; determine the target relationship curve between the engine speed after cold ignition and the time after ignition based on the temperature range; and calculate the target synchronization duration based on the target relationship curve.

7. A vehicle air-conditioning control device characterized by comprising: The vehicle air conditioning control device includes: a memory, a processor, and a vehicle air conditioning control program stored in the memory and running on the processor, wherein the vehicle air conditioning control program is configured to implement the vehicle air conditioning control method as described in any one of claims 1 to 5.

8. A storage medium, characterized in that, The storage medium stores a vehicle air conditioning control program, which, when executed by a processor, implements the vehicle air conditioning control method as described in any one of claims 1 to 5.

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