Self-cleaning methods, devices, equipment and storage media for vehicle air conditioning systems

Abstract

This application discloses a self-cleaning method, apparatus, device, and storage medium for a vehicle air conditioning system, relating to the field of air conditioning system self-cleaning technology. The method includes: acquiring the current mode of the vehicle's air conditioning; acquiring the air conditioning pressure value when the current mode (cooling mode) ends; and performing self-cleaning of the air conditioning system based on the air conditioning pressure value. This allows for timely self-cleaning based on the air conditioning pressure value after the cooling mode ends, ensuring that impurities in the air conditioning system are collected at the filter in a timely manner, preventing them from accumulating at the electronic expansion valve and affecting air conditioning cooling, thereby improving the air conditioning cooling effect.

Description

Technical Field

[0001] This application relates to the field of air conditioning system self-cleaning technology, and in particular to a method, apparatus, equipment and storage medium for self-cleaning vehicle air conditioning systems. Background Technology

[0002] The rapid development of new energy vehicles has led to the adaptation of some parts of the air conditioning system and the replacement of some parts. For example, electric compressors and electronic expansion valves have replaced the original mechanical compressors and mechanical expansion valves. Other parts have been added, such as PTC (Positive Temperature Coefficient) materials for heating and chillers for cooling the battery. However, during the operation of the air conditioner, especially in cooling mode, a large number of impurities block the cooling circuit, resulting in poor air conditioning cooling effect. Summary of the Invention

[0003] The main purpose of this application is to provide a self-cleaning method, device, equipment and storage medium for a vehicle air conditioning system, which aims to solve the technical problem of poor cooling effect caused by a large number of impurities clogging the air conditioning system during cooling.

[0004] To achieve the above objectives, this application proposes a self-cleaning method for a vehicle air conditioning system, the self-cleaning method for the vehicle air conditioning system comprising:

[0005] Get the current mode of the vehicle's air conditioning;

[0006] When the current mode ends in cooling mode, obtain the air conditioning pressure value;

[0007] The air conditioning system performs self-cleaning based on the air conditioning pressure value.

[0008] In one embodiment, the step of self-cleaning the air conditioning system based on the air conditioning pressure value includes:

[0009] The air conditioning pressure value is compared with a preset pressure threshold.

[0010] When the air conditioner pressure value is less than the preset pressure threshold, an air conditioner self-cleaning command is generated;

[0011] The air conditioning system self-cleaning is performed by the air conditioning self-cleaning command.

[0012] In one embodiment, the step of performing air conditioning system self-cleaning via the air conditioning self-cleaning command includes:

[0013] The current opening degree of the electronic expansion valve is obtained through the air conditioner self-cleaning command;

[0014] Get the preset adjustment opening;

[0015] Adjust the current opening degree to the preset adjustment opening degree to complete the self-cleaning of the air conditioning system.

[0016] In one embodiment, the step of performing air conditioning system self-cleaning via the air conditioning self-cleaning command includes:

[0017] The air conditioning self-cleaning command controls the vehicle's air conditioning to activate the heat pump mode.

[0018] When the air conditioner is in heat pump mode, the current operating status data of each component in the air conditioning system is acquired;

[0019] The current operating status data is adjusted to enable the air conditioning system to self-clean.

[0020] In one embodiment, the step of adjusting the current operating status data to achieve self-cleaning of the air conditioning system includes:

[0021] Based on the current operating status, the operating status of the air conditioner blower, water pump, first valve, second valve, evaporator-condenser expansion valve, and electronic expansion valve are obtained;

[0022] When the first valve, the evaporator-condenser expansion valve, the air conditioner blower, the second valve, and the water pump are all in the closed state, and the electronic expansion valve is in the open state with the electronic expansion valve open at the first preset opening degree, the system controls the opening of the first valve, the closing of the second valve, and the opening of the evaporator-condenser expansion valve, and adjusts the air conditioner blower speed and the opening degree of the electronic expansion valve to achieve self-cleaning of the air conditioning system.

[0023] In one embodiment, the step of adjusting the air conditioner blower speed and the opening of the electronic expansion valve includes:

[0024] Obtain the preset speed of the blower and the target preset opening of the electronic expansion valve;

[0025] Adjust the air conditioner blower speed from the current speed to the preset speed, and adjust the electronic expansion valve from the first preset opening degree to the target preset opening degree.

[0026] In one embodiment, after the step of performing self-cleaning of the air conditioning system based on the air conditioning pressure value, the method further includes:

[0027] Obtain the self-cleaning operation time of the air conditioning system;

[0028] When the running time reaches the preset running time threshold, the air conditioning system self-cleaning is turned off, and the filter replacement cycle is obtained;

[0029] Replace the filter in the liquid storage tank of the air conditioning system according to the filter replacement cycle.

[0030] Furthermore, to achieve the above objectives, this application also proposes a self-cleaning device for a vehicle air conditioning system, the self-cleaning device for a vehicle air conditioning system comprising:

[0031] The acquisition module is used to obtain the current mode of the vehicle's air conditioning.

[0032] The acquisition module is also used to acquire the air conditioning pressure value when the current mode ends in cooling mode;

[0033] The cleaning module is used to perform self-cleaning of the air conditioning system based on the air conditioning pressure value.

[0034] In addition, to achieve the above objectives, this application also proposes a self-cleaning device for a vehicle air conditioning system, the device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the self-cleaning method for a vehicle air conditioning system as described above.

[0035] In addition, to achieve the above objectives, this application also proposes a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the self-cleaning method for the vehicle air conditioning system as described above.

[0036] In addition, to achieve the above objectives, this application also provides a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the vehicle air conditioning system self-cleaning method described above.

[0037] One or more technical solutions proposed in this application obtain the current mode of the vehicle's air conditioning; when the current mode is cooling mode and ends, obtain the air conditioning pressure value; and perform self-cleaning of the air conditioning system based on the air conditioning pressure value. This allows for timely self-cleaning based on the air conditioning pressure value after the cooling mode ends, ensuring that impurities in the air conditioning system are collected at the filter in a timely manner, preventing them from accumulating at the electronic expansion valve and affecting air conditioning cooling, thereby improving the air conditioning cooling effect. Attached Figure Description

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] Figure 1 This is a schematic diagram comparing the pressure-temperature curves of vehicles with normal cooling and vehicles without cooling.

[0041] Figure 2 This is a flowchart illustrating an embodiment of the self-cleaning method for a vehicle air conditioning system provided in this application.

[0042] Figure 3 This is a schematic diagram showing the location of blockage and impurities in the electronic expansion valve in one embodiment of the vehicle air conditioning system self-cleaning method of this application;

[0043] Figure 4 This is a flowchart illustrating Embodiment 2 of the self-cleaning method for the vehicle air conditioning system of this application.

[0044] Figure 5 This is a flowchart illustrating Embodiment 3 of the self-cleaning method for the vehicle air conditioning system of this application;

[0045] Figure 6 This is a flowchart illustrating Embodiment 4 of the self-cleaning method for the vehicle air conditioning system of this application.

[0046] Figure 7 This is a schematic diagram of the air conditioning system cooling mode cycle in one embodiment of the vehicle air conditioning system self-cleaning method of this application;

[0047] Figure 8 This is a schematic diagram of the air conditioning system self-cleaning cycle in one embodiment of the vehicle air conditioning system self-cleaning method of this application;

[0048] Figure 9 This is a simplified flowchart illustrating an embodiment of the self-cleaning method for a vehicle air conditioning system according to this application;

[0049] Figure 10 This is a schematic diagram of the module structure of the self-cleaning device for a vehicle air conditioning system according to an embodiment of this application;

[0050] Figure 11 This is a schematic diagram of the equipment structure of the hardware operating environment involved in the self-cleaning method of the vehicle air conditioning system in the embodiments of this application.

[0051] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0052] It should be understood that the specific embodiments described herein are merely used to explain the technical solutions of the present application and are not intended to limit the present application.

[0053] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0054] The main solution of this application embodiment is: to obtain the current mode of the vehicle air conditioner; to obtain the air conditioner pressure value when the current mode ends in cooling mode; and to perform self-cleaning of the air conditioner system based on the air conditioner pressure value.

[0055] Due to the availability of current technology, some vehicles with malfunctioning air conditioning systems, when compared with normally functioning vehicles, have been found to have abnormal low-pressure conditions in their air conditioning systems, as follows: Figure 1 As shown, Figure 1 This diagram illustrates the comparison of pressure and temperature curves, showing a normal curve and a fault curve. In a normal vehicle, the low-pressure level typically fluctuates between 200 kPa and 400 kPa. Over time, the evaporator temperature decreases and tends towards a certain set value. However, in a vehicle with abnormal cooling, the low-pressure level frequently falls below 180 kPa (Note: 180 kPa is the low-pressure protection threshold of the air conditioning system). When the system's low-pressure value falls below the vehicle's protection threshold, the system sends a command to the compressor to stop working. It then resumes working when the pressure rises above 180 kPa, frequently switching between working and not working. Over time, the evaporator temperature rises, resulting in poor air conditioning cooling performance.

[0056] This application provides a solution that utilizes the adjustable opening of the electronic expansion valve. After the vehicle ends the cooling mode, the opening of the electronic expansion valve is adjusted to be larger than the diameter of the impurity particles in the system. After sufficient circulation, the impurities are transported to the filter screen that is already in the system's reservoir and stored there. The filter screen is replaced regularly, thereby achieving self-cleaning of the air conditioning system and preventing the lack of cooling caused by blockage of the electronic expansion valve.

[0057] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, or mobile phone, or an electronic device capable of performing the above functions, such as a vehicle air conditioning system self-cleaning device. The following description uses a vehicle air conditioning system self-cleaning device as an example to illustrate this embodiment and the subsequent embodiments.

[0058] Based on this, this application provides a self-cleaning method for a vehicle air conditioning system, referring to... Figure 2 , Figure 2 This is a flowchart illustrating the first embodiment of the self-cleaning method for the vehicle air conditioning system of this application.

[0059] In this embodiment, the vehicle air conditioning system self-cleaning method includes steps S10 to S30:

[0060] Step S10: Obtain the current mode of the vehicle's air conditioning.

[0061] The vehicle's air conditioning system can be in cooling or heating mode. When in cooling mode, the gap at the electronic expansion valve is smaller, which may cause the valve port to be blocked by a large amount of impurities from the cooling circuit. Figure 3 As shown, Figure 3 This diagram illustrates the location of blockages and impurities in the electronic expansion valve. Analysis shows that the impurities mainly consist of: metal and fiber, flux residue, and grease. These impurities originate from every component of the air conditioning system: the electric compressor, evaporator, evaporator-condenser, water condenser, and connecting pipes. In cooling mode, because the electronic expansion valve's opening is between 50 and 110 micrometers, impurities larger than 50 micrometers in diameter (fibers, aluminum shavings, resin) can potentially clog it. When the blockage exceeds 88%, the system pressure will be too low, causing the air conditioner to stop cooling.

[0062] In practice, it can be determined whether the vehicle is in cooling mode, thereby determining whether the vehicle's air conditioning system needs to be self-cleaned.

[0063] Step S20: When the current mode ends in cooling mode, obtain the air conditioning pressure value.

[0064] It is understandable that if the current mode is heating mode, the electronic expansion valve opens more fully and there will be no impurities clogging the valve, so the air conditioning system will not perform self-cleaning. However, when the current mode is cooling mode, there is a possibility of clogging the electronic expansion valve. Therefore, after the cooling mode ends, the air conditioning pressure value can be obtained. Due to the blockage of impurities, the air conditioning will not cool properly, and the vehicle's low pressure will frequently fall below the set low pressure protection threshold. Therefore, the air conditioning pressure value can be detected by the low pressure sensor installed on the air conditioning system. The air conditioning pressure value here is the low pressure value of the air conditioning.

[0065] Step S30: Perform self-cleaning of the air conditioning system according to the air conditioning pressure value.

[0066] In practice, the air conditioning system can be self-cleaned based on the air conditioning pressure value. Specifically, it can determine whether the air conditioning pressure value is lower than the preset low pressure threshold, and it can also determine whether the air conditioning pressure value frequently falls below the set low pressure protection threshold, such as setting a number of times threshold, 5 times, 10 times, etc. When the air conditioning pressure value falls below the set low pressure protection threshold to the set number of times threshold, the air conditioning system can be self-cleaned.

[0067] The self-cleaning function of the air conditioning system removes impurities from the valve port of the electronic expansion valve. The air conditioning system can be self-cleaned through a self-cleaning strategy.

[0068] It is understandable that the self-cleaning of the air conditioning system can occur in any scenario, such as before the vehicle rolls off the production line, during vehicle testing, or when the user is using the vehicle. For example, if the air conditioning system is self-cleaning before the vehicle rolls off the production line, the system can actively send a self-cleaning command to perform the self-cleaning.

[0069] In one feasible implementation, after step S30, steps S31 to S33 may also be included:

[0070] Step S31: Obtain the self-cleaning operation time of the air conditioning system.

[0071] It should be noted that the self-cleaning operation time of the air conditioning system can be timed using a timer to determine whether the operation time has reached a pre-set threshold. If the operation time has not reached the set threshold, the self-cleaning process of the air conditioning system can continue.

[0072] Step S32: When the running time reaches the preset running time threshold, control the air conditioning system to turn off self-cleaning and obtain the filter replacement cycle.

[0073] It should be noted that the preset running time threshold can be set to 3 minutes, 5 minutes, etc. This implementation does not impose any restrictions on this. For example, when the running time reaches 3 minutes, the air conditioning system self-cleaning can be controlled to turn off, waiting for the next self-cleaning. The filter replacement cycle can be set to 3 months, 6 months, etc., and can be set according to needs.

[0074] Step S33: Replace the filter of the liquid storage tank in the air conditioning system according to the filter replacement cycle.

[0075] It is understandable that during the self-cleaning of the air conditioner, impurities in the pipes or valve ports will flow into the liquid receiver in the air conditioning system. The liquid receiver is equipped with a filter screen, and the impurities will be stored in the filter screen. When the filter screen replacement cycle is reached, the filter screen can be replaced, thereby removing the impurities and improving the cooling effect of the air conditioning system.

[0076] This embodiment provides a self-cleaning method for a vehicle air conditioning system. The method involves obtaining the current mode of the vehicle's air conditioning system; when the current mode is cooling mode and ends, obtaining the air conditioning pressure value; and performing self-cleaning of the air conditioning system based on the air conditioning pressure value. This allows for timely self-cleaning based on the air conditioning pressure value after the cooling mode ends, ensuring that impurities in the air conditioning system are collected at the filter in a timely manner, preventing them from accumulating at the electronic expansion valve and affecting air conditioning cooling, thus improving the air conditioning cooling effect.

[0077] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to that in the first embodiment described above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 4 Step S30 includes steps S301 to S303:

[0078] Step S301: Compare the air conditioning pressure value with a preset pressure threshold.

[0079] It should be noted that the preset pressure threshold is the low-pressure protection threshold of the air conditioning system, which can be set to 180KPa, 200KPa, etc. This embodiment does not limit this, and this embodiment uses 180KPa as an example for explanation.

[0080] In practice, if the air conditioning pressure value is greater than or equal to the preset pressure threshold, it proves that there is no blockage or the blockage at the electronic expansion valve in the air conditioning system is not serious. In this case, the self-cleaning of the air conditioning system is not performed, and the air conditioning pressure value is monitored.

[0081] Step S302: When the air conditioner pressure value is less than the preset pressure threshold, generate an air conditioner self-cleaning command.

[0082] In practice, when the air conditioning pressure value is less than the preset pressure threshold, it indicates that the air conditioning system needs to be activated for low-pressure protection and the air conditioning system needs to be self-cleaned, thus generating an air conditioning self-cleaning command.

[0083] Step S303: Execute the air conditioning system self-cleaning via the air conditioning self-cleaning command.

[0084] Air conditioner self-cleaning commands can include the self-cleaning time and duration. The self-cleaning of the air conditioning system can be executed through the air conditioner self-cleaning command, for example, by controlling certain components in the air conditioning system, thereby realizing the self-cleaning of the air conditioning system.

[0085] As another example, a self-cleaning cycle can also be set. For instance, after the vehicle has traveled to a set mileage threshold, an air conditioning self-cleaning command can be automatically generated to execute the air conditioning system self-cleaning.

[0086] This embodiment compares the air conditioning pressure value with a preset pressure threshold; when the air conditioning pressure value is less than the preset pressure threshold, an air conditioning self-cleaning command is generated; the air conditioning system self-cleaning is then executed through the air conditioning self-cleaning command. By comparing the air conditioning pressure value with the preset pressure threshold, the presence of impurities causing blockage can be quickly detected, and corresponding air conditioning system self-cleaning can be performed. Through this automated self-cleaning mechanism, the problem of reduced cooling effect caused by impurities in the air conditioning system can be effectively prevented and resolved, improving the reliability and service life of the air conditioning system, while reducing maintenance costs and user inconvenience.

[0087] Based on the first and second embodiments of this application, in the third embodiment of this application, the content that is the same as or similar to that in Embodiments 1 and 2 described above can be referred to the above description and will not be repeated hereafter. Based on this, please refer to... Figure 5 Step S303 includes steps S3031 to S3033:

[0088] Step S3031: Obtain the current opening degree of the electronic expansion valve through the air conditioner self-cleaning command.

[0089] It should be noted that after the air conditioner finishes operating in cooling mode, the current opening degree of the electronic expansion valve is generally between 50 and 110 micrometers.

[0090] Step S3032: Obtain the preset adjustment opening.

[0091] The preset adjustment opening can be set to 300 micrometers, 400 micrometers, etc., or it can be adjusted according to the diameter of the impurity particles. The preset adjustment opening must be larger than the diameter of the impurity particles.

[0092] Step S3033: Adjust the current opening degree to the preset adjustment opening degree to complete the self-cleaning of the air conditioning system.

[0093] In practice, the current opening of the electronic expansion valve can be adjusted to the preset adjustment opening, thereby fully circulating impurities from the valve port of the preset adjustment opening to the filter screen of the liquid storage tank in the air conditioning system, realizing the self-cleaning of the air conditioning system.

[0094] This embodiment obtains the current opening degree of the electronic expansion valve through the air conditioner self-cleaning command; obtains the preset adjustment opening degree; and adjusts the current opening degree to the preset adjustment opening degree to complete the self-cleaning of the air conditioning system. This can prevent the lack of cooling caused by blockage of the electronic expansion valve and improve the self-cleaning and cooling effects of the air conditioning system.

[0095] Based on the first and second embodiments of this application, in the fourth embodiment of this application, the content that is the same as or similar to that in embodiments one and two above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 6 Step S303 includes steps S3031' to S3033':

[0096] Step S3031': Control the vehicle air conditioner to turn on the heat pump mode via the air conditioner self-cleaning command.

[0097] It should be noted that when the air conditioning system needs self-cleaning, the vehicle's air conditioning can be switched to heat pump mode according to the self-cleaning command, utilizing the principle of a heat pump to provide heat. A heat pump is a device that can transfer heat from a low-temperature environment to a high-temperature environment.

[0098] Step S3032': When the air conditioner is in heat pump mode, acquire the current operating status data of each component in the air conditioning system.

[0099] In practice, after the air conditioner successfully starts the heat pump mode, the operating status of the corresponding components in the air conditioning system will change. Therefore, the current operating status data of each component can be obtained. The current operating status data is the operating status of the air conditioning system when it is in cooling mode.

[0100] The current operating status of each device may include one or more of the following: air conditioner blower operating status, water pump operating status, first valve operating status, second valve operating status, evaporator condenser expansion valve operating status, and electronic expansion valve operating status.

[0101] Step S3033': Adjust the current operating status data to achieve self-cleaning of the air conditioning system.

[0102] In practice, the current operating status of each component can be adjusted, thereby enabling the air conditioning system to self-clean.

[0103] In one feasible implementation, step S3033' may include: obtaining the operating status of the air conditioner blower, water pump, first valve, second valve, evaporator-condenser expansion valve, and electronic expansion valve based on the current operating status; when the first valve and the evaporator-condenser expansion valve are both in a closed state, the air conditioner blower, the second valve, and the water pump are all in an open state, and the electronic expansion valve is in a state where the electronic expansion valve is open at a first preset opening degree, controlling the first valve to open, the second valve to close, and the evaporator-condenser expansion valve to open, and adjusting the air conditioner blower speed and the opening degree of the electronic expansion valve to achieve self-cleaning of the air conditioning system.

[0104] It should be noted that the air conditioner blower is always on in both cooling and heating modes. The water pump operates in various modes, including high-temperature, low-temperature, and ultra-low-temperature modes. The first valve is a two-way valve, and the second valve is a three-way valve.

[0105] like Figure 7 As shown, Figure 7 This is a schematic diagram of the cooling mode cycle of an air conditioning system. The air conditioning system includes: a 16mm on / off valve, a 10mm on / off valve, a battery cooler expansion valve, an evaporator-condenser expansion valve, an electronic expansion valve, a 3-way valve, a 2-way valve, an ultra-low temperature water pump, a low temperature water pump, a high temperature water pump, a compressor, and a condenser.

[0106] The compressor is the starting point of the refrigerant cycle, where the refrigerant is compressed and heated. Electronic expansion valve: The high-temperature, high-pressure refrigerant after the compressor flows through the electronic expansion valve; the valve opening is adjusted according to system requirements to control the refrigerant flow to the evaporator. Condenser: The refrigerant releases heat in the condenser, changing from a gaseous state to a high-pressure liquid state. On / off valves: 16mm and 10mm on / off valves control the refrigerant flow to different heat exchangers or components, such as the battery cooler or air conditioning assembly. Coaxial tube 2: Refrigerant flows through coaxial tube 2, which may connect to the battery cooler or other system components. Battery cooler expansion valve: The refrigerant flows through the battery cooler expansion valve, controlling the flow to the battery cooler to maintain the battery's optimal operating temperature. Battery cooler: Absorbs heat generated by the power battery to prevent overheating. Evaporator-condenser expansion valve: Controls the refrigerant flow to the evaporator-condenser, regulating the temperature of the air conditioning system. 3-way valve: Acts as a diverter or combiner in the refrigerant cycle. Air conditioning assembly: The refrigerant absorbs heat and evaporates in the evaporator section of the air conditioning assembly, producing cold air. 2-way valve: Controls the water flow in the water heater or condenser, adjusting the cooling or heating effect. Water condenser: Removes heat through water flow, assisting the air conditioning system in cooling. Water heater: Uses water flow to heat or cool air. Cryogenic water pump: Drives the coolant to circulate within the system, maintaining the temperature of the battery and other components. Evaporator-condenser: In the air conditioning system, the refrigerant undergoes evaporation and condensation, achieving heat exchange. Cryogenic radiator: A heat dissipation device used to dissipate heat within the system. Charger + inverter: Involved in power conversion, supplying power to the air conditioning system or other onboard equipment. Cryogenic water pump: Drives the cryogenic coolant to circulate within the system. One-way valve: Ensures unidirectional flow of coolant or refrigerant, preventing backflow. Motor: Drives the water pump or other mechanical components, such as a high-temperature water pump. High-temperature water pump: Drives the high-temperature coolant to circulate within the system for heating or cooling.

[0107] When the air conditioning system is in cooling mode, the 16mm on / off valve is open, the 10mm on / off valve is closed, the battery cooler expansion valve is open, the evaporator-condenser expansion valve is closed, the electronic expansion valve is open (small opening), the 3-way valve is closed, the 2-way valve is open, and the ultra-low temperature water pump, the low temperature water pump, and the high temperature water pump are all in working condition. The green channel in the figure shows the pipeline flow process during cooling.

[0108] In practice, the first preset opening degree can be between 50 micrometers and 110 micrometers. When self-cleaning is required, the air conditioning system activates the heat pump mode. At this time, the two-way valve is changed from closed to open, and the three-way valve is changed from open to closed. Simultaneously, the air conditioning blower speed and the opening degree of the electronic expansion valve are adjusted. Figure 8 As shown, Figure 8This is a schematic diagram of the self-cleaning cycle of the air conditioning system. At this time, the 16mm on / off valve is closed, the 10mm on / off valve is closed, the battery cooler expansion valve is closed, the evaporator-condenser expansion valve is open, the electronic expansion valve is open (large opening), the 3-way valve is closed, the 2-way valve is open, the ultra-low temperature water pump has no operating status, and the low temperature water pump and the high temperature water pump are in working status.

[0109] In one feasible implementation, the step of adjusting the air conditioner blower speed and the opening of the electronic expansion valve includes: obtaining the preset speed of the blower and the target preset opening of the electronic expansion valve; adjusting the air conditioner blower speed from the current speed to the preset speed, and adjusting the electronic expansion valve from the first preset opening to the target preset opening.

[0110] Understandably, if the preset speed is set to level four or higher, and the target preset opening is 300 micrometers, 500 micrometers, etc., the air conditioner blower speed can be adjusted to level four or higher, and the opening of the electronic expansion valve can be controlled from the first preset opening to the target preset opening. The specific adjustment steps are as follows: a step signal is sent to the electromagnetic coil, the rotor rotates step by step, the torque generated by the permanent magnet rotor is transmitted to the reduction gearbox, the generated torque is reduced and amplified by the reduction gearbox and rotates the screw, the screw rotation overcomes the spring force and pushes the pin to the target position, thereby realizing the adjustment of the opening of the electronic expansion valve.

[0111] This embodiment controls the vehicle's air conditioning to activate the heat pump mode via the air conditioning self-cleaning command. When the air conditioning is in heat pump mode, the current operating status data of each component in the air conditioning system is acquired. The current operating status data is adjusted to achieve self-cleaning of the air conditioning system. By activating the heat pump mode through air conditioning self-cleaning and adjusting the operating status data of each component, the self-cleaning function of the vehicle's air conditioning system can automatically clean the interior of the air conditioning system without manual intervention, thus maintaining the cooling effect of the air conditioning system.

[0112] For example, to help understand the implementation process of the vehicle air conditioning system self-cleaning method obtained by combining this embodiment with the above embodiment one, please refer to... Figure 9 , Figure 9 A simplified flowchart of a self-cleaning method for a vehicle air conditioning system is provided. Specifically, the application scenario is a self-cleaning scenario before the vehicle leaves the production line. Before the vehicle leaves the production line, the air conditioning self-cleaning program is started. By monitoring the value of the low-pressure sensor of the air conditioning system in real time, it is determined whether it is less than 180 kPa. If it is, the low-pressure protection is activated and the air conditioning self-cleaning process is started to complete the self-cleaning of the air conditioning system.

[0113] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the self-cleaning method of the vehicle air conditioning system of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0114] This application also provides a self-cleaning device for a vehicle air conditioning system; please refer to... Figure 10 The vehicle air conditioning system self-cleaning device includes:

[0115] Module 10 is used to obtain the current mode of the vehicle's air conditioning.

[0116] The acquisition module 10 is also used to acquire the air conditioning pressure value when the current mode ends in cooling mode.

[0117] The cleaning module 20 is used to perform self-cleaning of the air conditioning system based on the air conditioning pressure value.

[0118] The vehicle air conditioning system self-cleaning device provided in this application, employing the vehicle air conditioning system self-cleaning method described in the above embodiments, can solve the technical problem of poor cooling effect caused by a large number of impurities clogging the air conditioning system during cooling. Compared with the prior art, the beneficial effects of the vehicle air conditioning system self-cleaning device provided in this application are the same as those of the vehicle air conditioning system self-cleaning method provided in the above embodiments, and other technical features of the vehicle air conditioning system self-cleaning device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0119] In one embodiment, the cleaning module 20 is further configured to compare the air conditioning pressure value with a preset pressure threshold; when the air conditioning pressure value is less than the preset pressure threshold, generate an air conditioning self-cleaning command; and execute the air conditioning system self-cleaning through the air conditioning self-cleaning command.

[0120] In one embodiment, the cleaning module 20 is further configured to obtain the current opening degree of the electronic expansion valve through the air conditioner self-cleaning command; obtain a preset adjustment opening degree; and adjust the current opening degree to the preset adjustment opening degree to complete the self-cleaning of the air conditioning system.

[0121] In one embodiment, the cleaning module 20 is further configured to control the vehicle air conditioner to turn on the heat pump mode via the air conditioner self-cleaning command; when the air conditioner turns on the heat pump mode, acquire the current operating status data of each component in the air conditioning system; and adjust the current operating status data to achieve self-cleaning of the air conditioning system.

[0122] In one embodiment, the cleaning module 20 is further configured to obtain the operating status of the air conditioner blower, the water pump, the first valve, the second valve, the evaporator-condenser expansion valve, and the electronic expansion valve based on the current operating status; when the first valve and the evaporator-condenser expansion valve are both in a closed state, the air conditioner blower, the second valve, and the water pump are all in an open state, and the electronic expansion valve is in a state where the electronic expansion valve is open at a first preset opening degree, the module controls the first valve to open, the second valve to close, and the evaporator-condenser expansion valve to open, and adjusts the air conditioner blower speed and the opening degree of the electronic expansion valve to achieve self-cleaning of the air conditioning system.

[0123] In one embodiment, the cleaning module 20 is further configured to obtain the preset gear of the blower and the target preset opening of the electronic expansion valve; adjust the air conditioner blower gear from the current gear to the preset gear, and adjust the electronic expansion valve from the first preset opening to the target preset opening.

[0124] In one embodiment, the cleaning module 20 is further configured to obtain the self-cleaning operation time of the air conditioning system; when the operation time reaches a preset operation time threshold, control the self-cleaning of the air conditioning system to be turned off, and obtain the filter replacement cycle; and replace the filter of the liquid storage tank in the air conditioning system according to the filter replacement cycle.

[0125] This application provides a self-cleaning device for a vehicle air conditioning system. The self-cleaning device for a vehicle air conditioning system includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the self-cleaning method for a vehicle air conditioning system in the above embodiment 1.

[0126] The following is for reference. Figure 11 The diagram illustrates a structural schematic suitable for implementing a vehicle air conditioning system self-cleaning device according to embodiments of this application. The vehicle air conditioning system self-cleaning device in embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital radio receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Description), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 11The self-cleaning device for the vehicle air conditioning system shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0127] like Figure 11 As shown, the vehicle air conditioning system self-cleaning device may include a processing unit 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM) 1004. The RAM 1004 also stores various programs and data required for the operation of the vehicle air conditioning system self-cleaning device. The processing unit 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to I / O interface 1006: input devices 1007 including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 1008 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 1003 including, for example, magnetic tapes, hard disks, etc.; and communication devices 1009. Communication device 1009 allows the vehicle air conditioning system self-cleaning device to communicate wirelessly or wiredly with other devices to exchange data. Although the figure shows a vehicle air conditioning system self-cleaning device with various systems, it should be understood that it is not required to implement or possess all the systems shown. More or fewer systems can be implemented or possessed alternatively.

[0128] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program comprising program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0129] The vehicle air conditioning system self-cleaning device provided in this application, employing the vehicle air conditioning system self-cleaning method described in the above embodiments, can solve the technical problem of poor cooling effect caused by a large number of impurities clogging the air conditioning system during cooling. Compared with the prior art, the beneficial effects of the vehicle air conditioning system self-cleaning device provided in this application are the same as those of the vehicle air conditioning system self-cleaning method provided in the above embodiments, and other technical features of the vehicle air conditioning system self-cleaning device are the same as those disclosed in the previous embodiment method, and will not be repeated here.

[0130] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0131] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0132] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the vehicle air conditioning system self-cleaning method in the above embodiments.

[0133] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0134] The aforementioned computer-readable storage medium may be included in the vehicle air conditioning system self-cleaning device; or it may exist independently and not be installed in the vehicle air conditioning system self-cleaning device.

[0135] The aforementioned computer-readable storage medium carries one or more programs that, when executed by the vehicle air conditioning system self-cleaning device, cause the vehicle air conditioning system self-cleaning device to: acquire the current mode of the vehicle air conditioning; acquire the air conditioning pressure value when the current mode is cooling mode ends; and perform air conditioning system self-cleaning based on the air conditioning pressure value.

[0136] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0137] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, program segment or a part of code, and the module, program segment or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a combination of dedicated hardware and computer instructions.

[0138] The modules described in the embodiments of the present application may be implemented in software or hardware, wherein the name of a module does not necessarily limit the unit itself.

[0139] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the above-described self-cleaning method for a vehicle air conditioning system. This solves the technical problem of poor cooling performance caused by a large amount of impurities clogging the air conditioning system during cooling. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the self-cleaning method for a vehicle air conditioning system provided in the above embodiments, and will not be elaborated upon here.

[0140] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the self-cleaning method for a vehicle air conditioning system as described above.

[0141] The computer program product provided in this application can solve the technical problem of poor cooling effect caused by a large number of impurities clogging the air conditioning system during cooling. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the self-cleaning method for vehicle air conditioning systems provided in the above embodiments, and will not be repeated here.

[0142] The above description is only part of the embodiments of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A self-cleaning method for a vehicle air conditioning system, characterized in that, The self-cleaning method for the vehicle air conditioning system includes: Get the current mode of the vehicle's air conditioning; When the current mode ends in cooling mode, obtain the air conditioning pressure value; The air conditioning system performs self-cleaning based on the aforementioned air conditioning pressure value; The step of self-cleaning the air conditioning system based on the air conditioning pressure value includes: The air conditioning pressure value is compared with a preset pressure threshold. When the air conditioner pressure value is less than the preset pressure threshold, an air conditioner self-cleaning command is generated; The air conditioning self-cleaning command controls the vehicle's air conditioning to activate the heat pump mode. When the air conditioner is in heat pump mode, the current operating status data of each component in the air conditioning system is acquired; Adjusting the current operating status data to achieve self-cleaning of the air conditioning system includes: Based on the current operating status, the operating status of the air conditioner blower, water pump, first valve, second valve, evaporator-condenser expansion valve, and electronic expansion valve are obtained; When the first valve, the evaporator-condenser expansion valve, the air conditioner blower, the second valve, and the water pump are all in the closed state, and the electronic expansion valve is in the open state with the electronic expansion valve open at the first preset opening degree, the system controls the opening of the first valve, the closing of the second valve, and the opening of the evaporator-condenser expansion valve, and adjusts the air conditioner blower speed and the opening degree of the electronic expansion valve to achieve self-cleaning of the air conditioning system.

2. The method as described in claim 1, characterized in that, The step of executing the air conditioning system self-cleaning via the air conditioning self-cleaning command includes: The current opening degree of the electronic expansion valve is obtained through the air conditioner self-cleaning command; Get the preset adjustment opening; Adjust the current opening degree to the preset adjustment opening degree to complete the self-cleaning of the air conditioning system.

3. The method as described in claim 1, characterized in that, The steps for adjusting the air conditioner blower speed and the opening of the electronic expansion valve include: Obtain the preset speed of the blower and the target preset opening of the electronic expansion valve; Adjust the air conditioner blower speed from the current speed to the preset speed, and adjust the electronic expansion valve from the first preset opening degree to the target preset opening degree.

4. The method according to any one of claims 1 to 3, characterized in that, After the step of performing self-cleaning of the air conditioning system based on the air conditioning pressure value, the method further includes: Obtain the self-cleaning operation time of the air conditioning system; When the running time reaches the preset running time threshold, the air conditioning system self-cleaning is turned off, and the filter replacement cycle is obtained; Replace the filter in the liquid storage tank of the air conditioning system according to the filter replacement cycle.

5. A self-cleaning device for a vehicle air conditioning system, characterized in that, The device includes: The acquisition module is used to obtain the current mode of the vehicle's air conditioning. The acquisition module is also used to acquire the air conditioning pressure value when the current mode ends in cooling mode; The cleaning module is used to perform self-cleaning of the air conditioning system based on the air conditioning pressure value; The cleaning module is also used to compare the air conditioner pressure value with a preset pressure threshold. When the air conditioner pressure value is less than the preset pressure threshold, an air conditioner self-cleaning command is generated; The air conditioning self-cleaning command controls the vehicle's air conditioning to activate the heat pump mode. When the air conditioner is in heat pump mode, the current operating status data of each component in the air conditioning system is acquired; Adjusting the current operating status data to achieve self-cleaning of the air conditioning system includes: Based on the current operating status, the operating status of the air conditioner blower, water pump, first valve, second valve, evaporator-condenser expansion valve, and electronic expansion valve are obtained; When the first valve, the evaporator-condenser expansion valve, the air conditioner blower, the second valve, and the water pump are all in the closed state, and the electronic expansion valve is in the open state with the electronic expansion valve open at the first preset opening degree, the system controls the opening of the first valve, the closing of the second valve, and the opening of the evaporator-condenser expansion valve, and adjusts the air conditioner blower speed and the opening degree of the electronic expansion valve to achieve self-cleaning of the air conditioning system.

6. A self-cleaning device for a vehicle air conditioning system, characterized in that, The device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the self-cleaning method for a vehicle air conditioning system as described in any one of claims 1 to 4.

7. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, it implements the steps of the vehicle air conditioning system self-cleaning method as described in any one of claims 1 to 4.

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