Refrigerant filling method, device, medium and equipment for automobile air conditioning system

Abstract

The invention discloses a refrigerant filling method, device, medium and equipment for an automobile air conditioning system. According to the method, the supercooling degree is calculated by obtaining the preset refrigerant amount input by the user and collecting the corresponding condenser data, meanwhile, the real-time average temperature of the air outlet is monitored, and when the parameters reach and maintain the preset state, the system automatically fills the automobile air conditioner system with the refrigerant; and then, the preset sensor and the valve are used for accurately adjusting the filling amount, accurate filling of the refrigerant is ensured, and therefore accurate control and optimization of the refrigerant filling amount of the automobile air conditioning system are achieved, and the problem that in the prior art, the refrigerant of the automobile air conditioning system cannot be accurately filled is solved.

Description

Technical Field

[0001] The invention relates to the field of refrigerant charging of automobile air-conditioning systems, and in particular to a method, device, medium and equipment for charging refrigerant of automobile air-conditioning systems. Background Art

[0002] In traditional automotive air conditioning systems, the amount of refrigerant charged has a crucial impact on the performance of the air conditioning system. The correct charge amount can ensure the efficient operation of the air conditioning system, while too much or too little charge may cause system performance degradation or even damage system components.

[0003] Traditionally, the refrigerant charge calibration process relies on engineers’ experience and manual operation. Engineers need to judge the timing of refrigerant filling based on the response of the air conditioning system and manually record the filling amount data. This method is not only inefficient, but also prone to inaccurate filling due to human factors, affecting the performance and life of the air conditioning system.

[0004] In addition, the traditional method lacks real-time monitoring and precise control of key parameters such as temperature and pressure during the charging process, making it difficult to automate and standardize the charging process. These problems limit the optimization and improvement of the performance of automotive air-conditioning systems, while also increasing maintenance costs and environmental risks. At the same time, the existing technology is unable to accurately charge the refrigerant in the automotive air-conditioning system. Summary of the invention

[0005] The present invention provides a method, device, medium and equipment for charging refrigerant in an automobile air-conditioning system, so as to solve the problem that the automobile air-conditioning system refrigerant cannot be accurately charged in the prior art.

[0006] In a first aspect, the present application provides a method for charging a refrigerant in an automobile air conditioning system, comprising:

[0007] Obtaining a predetermined refrigerant quantity input by a user;

[0008] Acquiring condenser data of the automobile air conditioning system according to the predetermined refrigerant quantity;

[0009] According to the condenser data, the degree of subcooling at the condenser outlet is calculated;

[0010] Obtaining the real-time average temperature of the air outlet, and if the supercooling degree and the real-time average temperature of the air outlet reach a preset state and last for a preset time, charging refrigerant into the automobile air conditioning system;

[0011] According to the predetermined refrigerant quantity, the preset sensor and the preset valves, the charging amount of the refrigerant is adjusted to complete the charging of the refrigerant.

[0012] The automobile air-conditioning system refrigerant charging method of the present application ensures that the initial setting of the charging process meets the system design requirements by obtaining the predetermined refrigerant quantity input by the user. Then, by obtaining the condenser data and calculating the supercooling degree, the method can accurately evaluate the state of the refrigerant and provide a scientific basis for charging. Furthermore, by monitoring the real-time average temperature of the air outlet and using it together with the supercooling degree as the trigger condition for charging, the method ensures that the refrigerant is charged only when the system reaches the optimal charging state, thereby improving the accuracy of the timing of charging. Finally, by adjusting the charging amount according to the predetermined refrigerant quantity, sensor data and valve control, accurate control of the charging amount is achieved. The present application can reduce human errors, improve the accuracy and efficiency of charging, so as to solve the problem that the automobile air-conditioning system refrigerant cannot be accurately charged in the prior art.

[0013] As a preferred embodiment of the first aspect, before obtaining the predetermined refrigerant quantity input by the user, the method further includes:

[0014] Obtain the refrigerant quantity of the preset main tank with heating function;

[0015] If the amount of refrigerant in the main tank is less than a preset threshold, refrigerant is added to the main tank with heating function according to a preset procedure to obtain a first main tank;

[0016] According to the first main tank, a vacuuming operation is performed on the automobile air conditioning system.

[0017] In this preferred embodiment, before obtaining the predetermined refrigerant quantity input by the user, the present application first ensures the sufficiency of the refrigerant in the main tank with heating function, and automatically replenishes the refrigerant if it is insufficient by obtaining the refrigerant quantity in the main tank and comparing it with the preset threshold, thereby ensuring that the main tank has sufficient refrigerant for subsequent operations. This pre-processing step not only avoids the failure of charging due to insufficient refrigerant, but also provides sufficient refrigerant guarantee for subsequent vacuuming operations. Through this logical reasoning, the present application improves the reliability and efficiency of the entire charging process, ensures that the automobile air conditioning system is vacuumed and charged in the best state, thereby optimizing the performance and life of the system.

[0018] As a preferred embodiment of the first aspect, the refrigerant charging amount is adjusted according to the predetermined refrigerant amount, the preset sensor and the preset valves to complete the refrigerant charging, specifically:

[0019] Obtaining a first refrigerant quantity according to the predetermined refrigerant quantity and a preset electronic scale;

[0020] The first refrigerant is added to the automobile air-conditioning system according to the first refrigerant amount and the preset first valves.

[0021] In this preferred embodiment, the present application can ensure the accuracy of the initial charge amount by obtaining the precise first refrigerant amount according to the predetermined refrigerant amount input by the user and the preset electronic scale. Then, the first refrigerant is added to the automobile air-conditioning system using this precise initial charge amount and the preset first valve group, ensuring the precise control of the charging process. This logical reasoning process shows that the present application reduces human errors and improves the accuracy and consistency of charging by accurately measuring and controlling the initial charge amount, thereby optimizing the performance and efficiency of the automobile air-conditioning system and ensuring the reliable operation of the system.

[0022] As a preferred embodiment of the first aspect, after the first refrigerant is added to the automobile air conditioning system according to the first refrigerant amount and the preset first valves, the method further comprises:

[0023] Calculating a second refrigerant quantity according to the predetermined refrigerant quantity and the first refrigerant quantity;

[0024] The second refrigerant is added to the automobile air-conditioning system according to the second refrigerant amount and the preset second valves.

[0025] In this preferred embodiment, after the first refrigerant is added to the automobile air conditioning system, the application determines the second refrigerant amount by calculating the difference between the first refrigerant amount and the refrigerant amount preset by the user, thereby ensuring the continuity and accuracy of the filling process. Then, the calculated second refrigerant amount and the preset second valve group are used for the second filling, further ensuring the precise control of the entire filling process. By accurately calculating and controlling the refrigerant filling amount in stages, the application not only reduces the error accumulation of a single filling, but also improves the flexibility and adaptability of the filling, thereby optimizing the performance and efficiency of the automobile air conditioning system and ensuring the reliability and stability of the system.

[0026] As a preferred embodiment of the first aspect, the step of adjusting the refrigerant charge amount according to the predetermined refrigerant amount, the preset sensor and the preset valves to complete the refrigerant charging further includes:

[0027] Get the real-time outlet pressure value of the automobile air conditioning system condenser;

[0028] If the real-time outlet pressure value exceeds a preset pressure value, charging refrigerant into the automobile air conditioning system is stopped.

[0029] In this preferred embodiment, the present application obtains the outlet pressure value of the automobile air conditioning system condenser in real time and compares it with the preset pressure value, and can immediately stop charging the refrigerant when the pressure exceeds the safety threshold. This real-time monitoring and control mechanism not only prevents the system from being damaged due to overpressure, but also ensures the safety and reliability of the charging process. Through precise pressure monitoring and timely stopping of charging, the present application effectively avoids potential safety risks, improves the stability and durability of the automobile air conditioning system, and thus optimizes the overall system performance.

[0030] As a preferred embodiment of the first aspect, after adjusting the refrigerant charging amount according to the predetermined refrigerant amount, the preset sensor and the preset valves, and completing the refrigerant charging, the method further includes:

[0031] According to the automobile air conditioning system, the refrigerant charging amount data is obtained;

[0032] The optimal filling amount of the automobile air conditioning system is determined according to the filling amount data.

[0033] In this preferred embodiment, after the refrigerant is filled, the present application collects the filling amount data of the automobile air conditioning system and analyzes the data to determine the optimal filling amount of the system. By accurately recording the amount of each filling, the performance of the system under different filling amounts can be analyzed to find the optimal filling amount. This method not only improves the accuracy and traceability of the filling process, but also ensures that the automobile air conditioning system operates in the best state, improving the overall performance and efficiency of the system.

[0034] As a preferred embodiment of the first aspect, the acquiring of condenser data of the automobile air conditioning system is specifically:

[0035] The condenser data includes the temperature of the condenser air outlet, the condenser air outlet pressure and the temperature of the condenser air outlet.

[0036] In this preferred embodiment, the present application can comprehensively evaluate the working status of the condenser by acquiring the temperature, pressure and temperature data of the condenser air outlet. This detailed data collection allows the system to accurately monitor the performance indicators of the condenser, thereby providing a scientific basis for adjusting the refrigerant charge. The present application can ensure that the automobile air conditioning system operates in the best state, optimize the charging process, and improve the system efficiency and reliability by real-time monitoring of the key parameters of the condenser.

[0037] In a second aspect, the present application provides a refrigerant charging device for an automobile air conditioning system. The refrigerant charging device for an automobile air conditioning system comprises an acquisition module, a calculation module and a charging module:

[0038] The acquisition module is used to acquire the predetermined refrigerant quantity input by the user;

[0039] Acquiring condenser data of the automobile air conditioning system according to the predetermined refrigerant quantity;

[0040] The calculation module is used to calculate the subcooling degree at the condenser outlet according to the condenser data;

[0041] The charging module is used to obtain the real-time average temperature of the air outlet, and if the supercooling degree and the real-time average temperature of the air outlet reach a preset state and last for a preset time, refrigerant is charged into the automobile air conditioning system;

[0042] According to the predetermined refrigerant quantity, the preset sensor and the preset valves, the charging amount of the refrigerant is adjusted to complete the charging of the refrigerant.

[0043] This device uses three modules to divide the work and coordinate the work to more accurately charge the refrigerant of the automobile control system. The automobile air-conditioning system refrigerant charging method of the present application ensures that the initial setting of the charging process meets the system design requirements by obtaining the predetermined refrigerant quantity input by the user. Then, by obtaining the condenser data and calculating the supercooling degree, the method can accurately evaluate the state of the refrigerant and provide a scientific basis for charging. Furthermore, by monitoring the real-time average temperature of the air outlet and using it together with the supercooling degree as the trigger condition for charging, the method ensures that the refrigerant is charged only when the system reaches the optimal charging state, thereby improving the accuracy of the timing of charging. Finally, by adjusting the charging amount according to the predetermined refrigerant quantity, sensor data and valve control, accurate control of the charging amount is achieved. The present application can reduce human errors, improve the accuracy and efficiency of charging, so as to solve the problem that the refrigerant of the automobile air-conditioning system cannot be accurately charged in the prior art.

[0044] In a third aspect, the present application provides a computer-readable storage medium, the computer-readable storage medium including a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute a refrigerant charging method for an automobile air-conditioning system as described. The beneficial effect thereof is the same as that of the refrigerant charging method for an automobile air-conditioning system provided in the first aspect of the present application.

[0045] In a fourth aspect, the present application provides a terminal device, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, it implements any one of the automobile air-conditioning system refrigerant charging methods described in the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 : A schematic flow chart of an embodiment of a method for charging refrigerant in an automobile air-conditioning system provided in the present application;

[0047] Figure 2 : A schematic diagram of the structure of an embodiment of the six modules provided in this application;

[0048] Figure 3 ; A structural schematic diagram of an embodiment of vacuuming before refrigerant replenishment provided in the present application;

[0049] Figure 4 ; A schematic diagram of a structure of an embodiment of a device for replenishing refrigerant provided in the present application;

[0050] Figure 5 ; A structural schematic diagram of an embodiment of the vacuuming of the automobile air conditioning system provided by the present application;

[0051] Figure 6 ; A structural schematic diagram of an embodiment of the refrigerant charge calibration of the automobile air-conditioning system provided by the present application;

[0052] Figure 7 ; A structural schematic diagram of an embodiment of the data export of the filling machine provided in the present application;

[0053] Figure 8 ; A structural schematic diagram of an embodiment of a refrigerant charging device for an automobile air-conditioning system provided in the present application. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] Embodiment 1

[0056] Please refer to Figure 1 , which is a refrigerant charging method for an automobile air-conditioning system provided by an embodiment of the present invention.

[0057] In this embodiment, the process of the automobile air-conditioning system refrigerant charging method in this application is described in detail through steps S01-S05.

[0058] like Figure 2 As shown, the refrigerant filling of the automobile air-conditioning system of the present application includes six modules: 1. Visual control panel; 2. Filling machine controller; 3. High-precision electronic scale; 4. Main tank with heating function; 5. Vacuum pump; 6. Electric valve and pressure sensor.

[0059] First, confirm that the refrigerant in the main tank with heating function is sufficient. If not, add refrigerant to the main tank with heating function.

[0060] like Figure 3 As shown, the refrigerant storage tank needs to be evacuated before adding refrigerant to the main tank with heating function. The filling machine is connected to the refrigerant storage tank. Click the refrigerant adding button of the device, valve 2 opens, the vacuum pump starts, and the filling machine controller detects pressure sensor 1. When the pressure is -1.0bar, the vacuum is stopped, valve 2 is closed, and the pressure holding mode is entered to prepare to add refrigerant to the filling machine.

[0061] like Figure 4 As shown, after the vacuum is drawn, refrigerant is added to the main tank: after the pressure is maintained successfully, the filling machine automatically enters the refrigerant filling mode, the filling amount is set, the high-precision electronic scale automatically returns to zero, and valve 1 opens. When the electronic scale detects that the filling amount reaches the set filling amount, valve 1 closes, and the filling machine completes the refrigerant filling.

[0062] S01: Obtaining a predetermined refrigerant quantity input by a user.

[0063] As a preferred embodiment of the first embodiment, after obtaining the predetermined refrigerant quantity input by the user, the method further includes:

[0064] Vacuuming the car air conditioning system: Figure 5 As shown, click on the system vacuum mode, valve 3 opens, valve 4 opens, the vacuum pump starts, the filling machine controller detects the pressure sensor 2, and when the pressure is -1.0 bar, the vacuum pumping stops, valve 3 is closed, and the automobile air conditioning system enters the pressure maintaining mode, preparing to fill the system with refrigerant.

[0065] Initial filling amount filling: Figure 6 As shown, after the system pressure maintenance is completed, the initial filling volume is set, the system filling button is clicked, the high-precision electronic scale automatically returns to zero, valves 4, 5, 6, and 7 are all opened, and the main tank fills the automobile air-conditioning system with refrigerant. When the filling machine controller detects that the pressure of pressure sensor 3 is lower than 8 bar, the heating function of the main tank is turned on, and the heating is stopped when the pressure rises to 9.5 bar.

[0066] S02: Acquire condenser data of the automobile air-conditioning system according to the predetermined refrigerant quantity.

[0067] As a preferred embodiment of the first embodiment, the acquisition of condenser data of the automobile air conditioning system is specifically as follows:

[0068] The condenser data includes the temperature of the condenser air outlet, the condenser air outlet pressure and the temperature of the condenser air outlet.

[0069] In this preferred embodiment, the present application can comprehensively evaluate the working status of the condenser by acquiring the temperature, pressure and temperature data of the condenser air outlet. This detailed data collection allows the system to accurately monitor the performance indicators of the condenser, thereby providing a scientific basis for adjusting the refrigerant charge. The present application can ensure that the automobile air conditioning system operates in the best state, optimize the charging process, and improve the system efficiency and reliability by real-time monitoring of the key parameters of the condenser.

[0070] S03: Calculate the degree of subcooling at the condenser outlet according to the condenser data.

[0071] S04: obtaining the real-time average temperature of the air outlet, and if the supercooling degree and the real-time average temperature of the air outlet reach a preset state and last for a preset time, charging refrigerant into the automobile air conditioning system.

[0072] As a preferred embodiment of the first embodiment, the real-time average temperature of the air outlet is obtained, and if the supercooling degree and the real-time average temperature of the air outlet reach a preset state and last for a preset time, refrigerant is charged into the automobile air conditioning system, specifically:

[0073] Run the automobile air conditioning system under stable working conditions, click the charge calibration button, and set the amount of refrigerant to be added each time. The filling machine controller collects the temperature and pressure of the automobile air conditioning system condenser outlet and the temperature of the air outlet of the air conditioning system through the bus device. Calculate the supercooling degree of the condenser outlet and the average temperature of the air outlet collected. When the supercooling degree and the average temperature of the air outlet remain stable for 5 minutes, open valve 4 / 5 / 6 / 7 and add refrigerant to the automobile air conditioning system.

[0074] In this preferred embodiment, the present application can accurately calculate the degree of supercooling and monitor the average temperature of the air outlet by operating the automobile air conditioning system under stable working conditions and collecting the temperature and pressure of the condenser outlet and the temperature data of the air outlet. When these parameters reach the preset state and remain stable for 5 minutes, a specific valve is automatically opened for refrigerant filling. The present application can ensure that the refrigerant is filled into the system under optimal conditions by real-time monitoring and precise control of the filling timing, thereby optimizing the performance and efficiency of the air conditioning system, reducing energy consumption and potential system damage.

[0075] S05: According to the predetermined refrigerant quantity, the preset sensor and the preset valves, the charging amount of the refrigerant is adjusted to complete the charging of the refrigerant.

[0076] As a preferred embodiment of the first embodiment, the charging amount of the refrigerant is adjusted according to the predetermined refrigerant amount, the preset sensor and the preset valves to complete the charging of the refrigerant, specifically:

[0077] The filling machine controller collects data from a high-precision electronic scale. When the filling amount is close to the set filling amount, valve 5 is closed and the small flow valve 6 continues to fill to the set amount. After the filling is completed, valves 4 / 5 / 6 / 7 are closed and the air conditioning system parameters are continued to be collected. When the subcooling degree and the average temperature of the air outlet are kept stable for 5 minutes, the set amount of refrigerant is continued to be filled. When the filling machine controller detects that the outlet pressure of the automobile air conditioning system condenser exceeds 20bar, the filling is automatically stopped and the filling amount test calibration is completed. Figure 7 As shown, data is exported from the filling machine and engineers analyze the data to select the optimal filling amount for the air conditioning system.

[0078] In this preferred embodiment, the present application ensures accurate refrigerant filling by using high-precision electronic scale data to monitor the filling amount, and by closing the main valve and using a small flow valve to accurately control the filling amount when it is close to the set value. After the filling is completed, the air conditioning system parameters such as subcooling and average outlet temperature are continuously monitored to ensure stable operation of the system. If the system pressure exceeds 20 bar, the filling is automatically stopped to prevent overpressure. Finally, the optimal filling amount is determined by analyzing the derived data. This process not only improves the accuracy and safety of the filling, but also optimizes the performance and efficiency of the air conditioning system.

[0079] The automobile air-conditioning system refrigerant charging method of the present application ensures that the initial setting of the charging process meets the system design requirements by obtaining the predetermined refrigerant quantity input by the user. Then, by obtaining the condenser data and calculating the supercooling degree, the method can accurately evaluate the state of the refrigerant and provide a scientific basis for charging. Furthermore, by monitoring the real-time average temperature of the air outlet and using it together with the supercooling degree as the trigger condition for charging, the method ensures that the refrigerant is charged only when the system reaches the optimal charging state, thereby improving the accuracy of the timing of charging. Finally, by adjusting the charging amount according to the predetermined refrigerant quantity, sensor data and valve control, accurate control of the charging amount is achieved. The present application can reduce human errors, improve the accuracy and efficiency of charging, so as to solve the problem that the automobile air-conditioning system refrigerant cannot be accurately charged in the prior art.

[0080] Embodiment 2

[0081] Please refer to Figure 8 , is a refrigerant charging device for an automobile air-conditioning system provided in an embodiment of the present application.

[0082] In this embodiment, the refrigerant charging device of the automobile air conditioning system includes an acquisition module 10 , a calculation module 20 and a charging module 30 .

[0083] like Figure 2As shown, the refrigerant filling of the automobile air-conditioning system of the present application includes six modules: 1. Visual control panel; 2. Filling machine controller; 3. High-precision electronic scale; 4. Main tank with heating function; 5. Vacuum pump; 6. Electric valve and pressure sensor.

[0084] First, confirm that the refrigerant in the main tank with heating function is sufficient. If not, add refrigerant to the main tank with heating function.

[0085] like Figure 3 As shown, the refrigerant storage tank needs to be evacuated before adding refrigerant to the main tank with heating function. The filling machine is connected to the refrigerant storage tank. Click the refrigerant adding button of the device, valve 2 opens, the vacuum pump starts, and the filling machine controller detects pressure sensor 1. When the pressure is -1.0bar, the vacuum is stopped, valve 2 is closed, and the pressure holding mode is entered to prepare to add refrigerant to the filling machine.

[0086] like Figure 4 As shown, after the vacuum is drawn, refrigerant is added to the main tank: after the pressure is maintained successfully, the filling machine automatically enters the refrigerant filling mode, the filling amount is set, the high-precision electronic scale automatically returns to zero, and valve 1 opens. When the electronic scale detects that the filling amount reaches the set filling amount, valve 1 closes, and the filling machine completes the refrigerant filling.

[0087] The acquisition module 10 is used to acquire a predetermined refrigerant quantity input by a user.

[0088] As a preferred embodiment of the second embodiment, after obtaining the predetermined refrigerant quantity input by the user, the method further includes:

[0089] Vacuuming the car air conditioning system: Figure 5 As shown, click on the system vacuum mode, valve 3 opens, valve 4 opens, the vacuum pump starts, the filling machine controller detects the pressure sensor 2, and when the pressure is -1.0 bar, the vacuum pumping stops, valve 3 is closed, and the automobile air conditioning system enters the pressure maintaining mode, preparing to fill the system with refrigerant.

[0090] Initial filling amount filling: Figure 6 As shown, after the system pressure maintenance is completed, the initial filling volume is set, the system filling button is clicked, the high-precision electronic scale automatically returns to zero, valves 4, 5, 6, and 7 are all opened, and the main tank fills the automobile air-conditioning system with refrigerant. When the filling machine controller detects that the pressure of pressure sensor 3 is lower than 8 bar, the heating function of the main tank is turned on, and the heating is stopped when the pressure rises to 9.5 bar.

[0091] The acquisition module 10 is further used to acquire condenser data of the automobile air-conditioning system according to the predetermined refrigerant quantity.

[0092] As a preferred embodiment of the second embodiment, the acquisition of condenser data of the automobile air conditioning system is specifically as follows:

[0093] The condenser data includes the temperature of the condenser air outlet, the condenser air outlet pressure and the temperature of the condenser air outlet.

[0094] In this preferred embodiment, the present application can comprehensively evaluate the working status of the condenser by acquiring the temperature, pressure and temperature data of the condenser air outlet. This detailed data collection allows the system to accurately monitor the performance indicators of the condenser, thereby providing a scientific basis for adjusting the refrigerant charge. The present application can ensure that the automobile air conditioning system operates in the best state, optimize the charging process, and improve the system efficiency and reliability by real-time monitoring of the key parameters of the condenser.

[0095] The calculation module 20 is used to calculate the subcooling degree at the condenser outlet according to the condenser data.

[0096] The charging module 30 is used to obtain the real-time average temperature of the air outlet. If the supercooling degree and the real-time average temperature of the air outlet reach a preset state and last for a preset time, refrigerant is charged into the automobile air conditioning system.

[0097] As a preferred embodiment of the second embodiment, the real-time average temperature of the air outlet is obtained, and if the supercooling degree and the real-time average temperature of the air outlet reach a preset state and last for a preset time, refrigerant is charged into the automobile air conditioning system, specifically:

[0098] Run the automobile air conditioning system under stable working conditions, click the charge calibration button, and set the amount of refrigerant to be added each time. The filling machine controller collects the temperature and pressure of the automobile air conditioning system condenser outlet and the temperature of the air outlet of the air conditioning system through the bus device. Calculate the supercooling degree of the condenser outlet and the average temperature of the air outlet collected. When the supercooling degree and the average temperature of the air outlet remain stable for 5 minutes, open valve 4 / 5 / 6 / 7 and add refrigerant to the automobile air conditioning system.

[0099] In this preferred embodiment, the present application can accurately calculate the degree of supercooling and monitor the average temperature of the air outlet by operating the automobile air conditioning system under stable working conditions and collecting the temperature and pressure of the condenser outlet and the temperature data of the air outlet. When these parameters reach the preset state and remain stable for 5 minutes, a specific valve is automatically opened for refrigerant filling. The present application can ensure that the refrigerant is filled into the system under optimal conditions by real-time monitoring and precise control of the filling timing, thereby optimizing the performance and efficiency of the air conditioning system, reducing energy consumption and potential system damage.

[0100] The charging module 30 is also used to adjust the charging amount of the refrigerant according to the predetermined refrigerant amount, the preset sensor and the preset valves to complete the charging of the refrigerant.

[0101] As a preferred embodiment of the second embodiment, the charging amount of the refrigerant is adjusted according to the predetermined refrigerant amount, the preset sensor and the preset valves to complete the charging of the refrigerant, specifically:

[0102] The filling machine controller collects data from a high-precision electronic scale. When the filling amount is close to the set filling amount, valve 5 is closed and the small flow valve 6 continues to fill to the set amount. After the filling is completed, valves 4 / 5 / 6 / 7 are closed and the air conditioning system parameters are continued to be collected. When the subcooling degree and the average temperature of the air outlet are kept stable for 5 minutes, the set amount of refrigerant is continued to be filled. When the filling machine controller detects that the outlet pressure of the automobile air conditioning system condenser exceeds 20bar, the filling is automatically stopped and the filling amount test calibration is completed. Figure 7 As shown, data is exported from the filling machine and engineers analyze the data to select the optimal filling amount for the air conditioning system.

[0103] In this preferred embodiment, the present application ensures accurate refrigerant filling by using high-precision electronic scale data to monitor the filling amount, and by closing the main valve and using a small flow valve to accurately control the filling amount when it is close to the set value. After the filling is completed, the air conditioning system parameters such as subcooling and average outlet temperature are continuously monitored to ensure stable operation of the system. If the system pressure exceeds 20 bar, the filling is automatically stopped to prevent overpressure. Finally, the optimal filling amount is determined by analyzing the derived data. This process not only improves the accuracy and safety of the filling, but also optimizes the performance and efficiency of the air conditioning system.

[0104] This device uses three modules to divide the work and coordinate the work to more accurately charge the refrigerant of the automobile control system. The automobile air-conditioning system refrigerant charging method of the present application ensures that the initial setting of the charging process meets the system design requirements by obtaining the predetermined refrigerant quantity input by the user. Then, by obtaining the condenser data and calculating the supercooling degree, the method can accurately evaluate the state of the refrigerant and provide a scientific basis for charging. Furthermore, by monitoring the real-time average temperature of the air outlet and using it together with the supercooling degree as the trigger condition for charging, the method ensures that the refrigerant is charged only when the system reaches the optimal charging state, thereby improving the accuracy of the timing of charging. Finally, by adjusting the charging amount according to the predetermined refrigerant quantity, sensor data and valve control, accurate control of the charging amount is achieved. The present application can reduce human errors, improve the accuracy and efficiency of charging, so as to solve the problem that the refrigerant of the automobile air-conditioning system cannot be accurately charged in the prior art.

[0105] Embodiment three:

[0106] The embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the method for charging refrigerant in an automobile air-conditioning system;

[0107] Wherein, the refrigerant charging method for an automobile air conditioning system, if implemented in the form of a software functional unit and used as an independent product, can be stored in a computer-readable storage medium. Based on such an understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0108] Embodiment 4

[0109] The present application provides a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, any one of the automobile air-conditioning system refrigerant charging methods described in Example 1 is implemented.

[0110] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for charging refrigerant in an automobile air conditioning system, characterized in that: include: Obtaining a predetermined refrigerant quantity input by a user; Acquiring condenser data of the automobile air conditioning system according to the predetermined refrigerant quantity; According to the condenser data, the degree of subcooling at the condenser outlet is calculated; Obtaining the real-time average temperature of the air outlet, and if the supercooling degree and the real-time average temperature of the air outlet reach a preset state and last for a preset time, charging refrigerant into the automobile air conditioning system; According to the predetermined refrigerant quantity, the preset sensor and the preset valves, the charging amount of the refrigerant is adjusted to complete the charging of the refrigerant.

2. The method for charging refrigerant in an automobile air conditioning system according to claim 1, characterized in that: Before obtaining the predetermined refrigerant quantity input by the user, the method further includes: Obtain the refrigerant quantity of the preset main tank with heating function; If the amount of refrigerant in the main tank is less than a preset threshold, refrigerant is added to the main tank with heating function according to a preset procedure to obtain a first main tank; According to the first main tank, a vacuuming operation is performed on the automobile air conditioning system.

3. The method for charging refrigerant in an automobile air conditioning system according to claim 1, characterized in that: The step of adjusting the refrigerant charge amount according to the predetermined refrigerant amount, the preset sensor and the preset valves to complete the refrigerant charging is specifically as follows: Obtaining a first refrigerant quantity according to the predetermined refrigerant quantity and a preset electronic scale; The first refrigerant is added to the automobile air-conditioning system according to the first refrigerant amount and the preset first valves.

4. The method for charging refrigerant in an automobile air conditioning system according to claim 3, characterized in that: After the first refrigerant is added to the automobile air conditioning system according to the first refrigerant amount and the preset first valves, the method further includes: Calculating a second refrigerant quantity according to the predetermined refrigerant quantity and the first refrigerant quantity; The second refrigerant is added to the automobile air-conditioning system according to the second refrigerant amount and the preset second valves.

5. The method for charging refrigerant in an automobile air conditioning system according to claim 1, characterized in that: The method further comprises: adjusting the charging amount of the refrigerant according to the predetermined refrigerant amount, the preset sensor and the preset valves to complete the charging of the refrigerant; Get the real-time outlet pressure value of the automobile air conditioning system condenser; If the real-time outlet pressure value exceeds a preset pressure value, charging refrigerant into the automobile air conditioning system is stopped.

6. The method for charging refrigerant in an automobile air conditioning system according to claim 1, characterized in that: After adjusting the charging amount of the refrigerant according to the predetermined refrigerant amount, the preset sensor and the preset valves, and completing the charging of the refrigerant, the method further includes: According to the automobile air conditioning system, the refrigerant charging amount data is obtained; The optimal filling amount of the automobile air conditioning system is determined according to the filling amount data.

7. The method for charging refrigerant in an automobile air conditioning system according to claim 1, characterized in that: The method of obtaining the condenser data of the automobile air conditioning system is specifically as follows: The condenser data includes the temperature of the condenser air outlet, the condenser air outlet pressure and the temperature of the condenser air outlet.

8. A refrigerant charging device for an automobile air conditioning system, characterized in that: Including acquisition module, calculation module and filling module: The acquisition module is used to acquire the predetermined refrigerant quantity input by the user; Acquiring condenser data of the automobile air conditioning system according to the predetermined refrigerant quantity; The calculation module is used to calculate the subcooling degree at the condenser outlet according to the condenser data; The charging module is used to obtain the real-time average temperature of the air outlet, and if the supercooling degree and the real-time average temperature of the air outlet reach a preset state and last for a preset time, refrigerant is charged into the automobile air conditioning system; According to the predetermined refrigerant quantity, the preset sensor and the preset valves, the charging amount of the refrigerant is adjusted to complete the charging of the refrigerant.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the automobile air-conditioning system refrigerant charging method according to any one of claims 1 to 7.

10. A terminal device, characterized in that: The invention comprises a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the refrigerant charging method for the automobile air-conditioning system as claimed in any one of claims 1 to 7 is implemented.

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