An integrated system for liquid chiller refrigerant charge and a control method thereof

Abstract

This invention relates to the field of liquid cooling technology and discloses an integrated system and its control method for refrigerant charging of liquid cooling units. The integrated system includes: a control module, a vacuuming module, a helium charging module, a helium recovery module, a refrigerant injection module, and a robotic arm module. The robotic arm module integrates the refrigerant piping of the integrated system. The vacuuming module is used to evacuate the refrigerant piping of the liquid cooling unit based on control commands; the helium charging module is used to charge helium into the refrigerant piping of the liquid cooling unit based on control commands; the helium recovery module is used to recover and purify the helium in the refrigerant piping of the liquid cooling unit based on control commands; the refrigerant injection module is used to charge refrigerant into the refrigerant piping of the liquid cooling unit based on control commands; and the robotic arm module is used to control the connection and disconnection between the second end of the integrated system's refrigerant piping and the refrigerant piping of the liquid cooling unit based on control commands. This invention has a high degree of integration, can shorten the process cycle, and can recover and reuse high-cost helium, significantly reducing costs and energy consumption.

Description

Technical Field

[0001] This invention relates to the field of liquid cooling technology, and more specifically to an integrated system and control method for refrigerant charging of liquid cooling units. Background Technology

[0002] With the rapid development of the battery and new energy industry, the market for liquid cooling is also expanding. The industrialization of liquid cooling units is key to promoting the rapid development of new energy. The internal system of a liquid cooling unit is quite complex. Before charging the refrigerant, pressure holding and vacuuming processes are required. In traditional production lines, refrigerant charging requires multiple machines operating in stages, relying on manual coordination. This process is not only cumbersome and time-consuming, but also prone to operational errors affecting product quality, resulting in low production efficiency. Furthermore, the system pressure holding often uses inert gases, typically nitrogen or helium. Nitrogen requires a longer pressure holding time, increasing production time, while helium, although shortening the pressure holding time, is more expensive. Summary of the Invention

[0003] This invention provides an integrated system and control method for refrigerant charging of liquid-cooled units, to solve the problems of dispersed and inefficient refrigerant charging processes in traditional liquid-cooled units.

[0004] In a first aspect, the present invention provides an integrated system for refrigerant charging of a liquid-cooled unit, comprising: a control module, a vacuuming module, a helium charging module, a helium recovery module, a refrigerant injection module, and a robotic arm module. The robotic arm module has a built-in refrigerant pipeline of the integrated system. The control module is electrically connected to the vacuuming module, the helium charging module, the helium recovery module, the refrigerant injection module, and the robotic arm module and outputs corresponding control commands. The vacuuming module is connected to the outlet of a first pipeline and to one end of the integrated system's refrigerant pipeline via the inlet of the first pipeline. The vacuuming module is used to evacuate the refrigerant pipeline of the liquid-cooled unit based on the control commands. The helium charging module is connected to the inlet of a second pipeline and to the first end of the integrated system's refrigerant pipeline via the outlet of the second pipeline. The system consists of several modules: a helium charging module (connected to the outlet of the third pipeline and connected to the first end of the integrated system's refrigerant pipeline via the inlet of the third pipeline), a refrigerant injection module (connected to the inlet of the fourth pipeline and connected to the first end of the integrated system's refrigerant pipeline via the outlet of the fourth pipeline), a robotic arm module (used to control the connection between the second end of the integrated system's refrigerant pipeline and the refrigerant pipeline), and a refrigerant injection module (operating in parallel for a limited time).

[0005] This invention provides an integrated system for refrigerant charging in liquid-cooled units. The helium recovery module and the refrigerant charging module operate in parallel for a portion of the time, significantly shortening the entire charging cycle and improving production line efficiency. Through a helium recovery and purification mechanism, the system achieves the recycling of high-cost helium, substantially reducing production material costs. The robotic arm module further improves the precision and automation level of pipeline connections, reducing human error. Overall, it offers significant comprehensive advantages in improving charging quality and reducing energy consumption and labor costs. This invention integrates multiple process modules, including vacuuming, helium charging, helium recovery, and refrigerant charging, into a single system and uses a unified control module to achieve fully automated operation, effectively solving the problems of dispersed equipment, reliance on manual processes, and low production efficiency in traditional liquid-cooled unit refrigerant charging.

[0006] In one optional embodiment, the vacuuming module includes a vacuum pump and a first solenoid valve, wherein the vacuum pump is located at the outlet of the first pipeline, the first solenoid valve is located on the first pipeline, and both the vacuum pump and the first solenoid valve are electrically connected to the control module; after the first solenoid valve and the vacuum pump are opened based on the control command, the vacuum pump evacuates the refrigerant pipeline of the liquid cooling unit, and the control module determines whether the vacuuming process is completed based on the pressure value fed back by the robotic arm module.

[0007] In one optional embodiment, the helium filling module includes: a helium tank, a pressure regulating device, and a second solenoid valve. The helium tank is connected to the inlet of the second pipeline, and the pressure regulating device and the second solenoid valve are sequentially arranged on the second pipeline along the helium flow direction. The helium tank, pressure regulating device, and second solenoid valve are all electrically connected to the control module. The pressure regulating device is used to regulate the pressure of the second pipeline based on control commands. After the second solenoid valve and the helium tank are both opened based on control commands, the helium tank fills the refrigerant pipeline of the liquid chiller with helium.

[0008] In one optional embodiment, the helium recovery module includes: a buffer tank, a purification device, a third solenoid valve, a fourth solenoid valve, a purity analyzer, and a waste gas storage tank. The waste gas storage tank is located at the outlet of the third pipeline. The buffer tank, purification device, purity analyzer, and third solenoid valve are sequentially arranged on the third pipeline along the helium recovery direction. The helium tank is connected to the third pipeline between the third solenoid valve and the purity analyzer via a fifth pipeline. The fourth solenoid valve is located on the fifth pipeline. The third solenoid valve, fourth solenoid valve, and purity analyzer are all electrically connected to the control module. The buffer tank is used to stabilize the pressure of the helium recovered from the refrigerant pipeline of the liquid chiller unit. The purification device is used to purify the recovered helium. The purity analyzer detects the purity of the purified helium based on control commands and sends the results to the control module. The control module controls the third or fourth solenoid valve to open based on the purity information, allowing helium meeting a preset purity to flow into the helium tank, or allowing helium not meeting the preset purity to flow into the waste gas storage tank.

[0009] In one optional implementation, the refrigerant charging module includes: at least one independent refrigerant charging flow path, each refrigerant charging flow path including a refrigerant tank and a fifth solenoid valve, wherein the fifth solenoid valve is electrically connected to the control module; a weight sensor is installed below each refrigerant tank, the weight sensor is electrically connected to the control module, and is used to send the remaining weight of the refrigerant in the refrigerant tank to the control module; the control module controls the fifth solenoid valve on the flow path of the corresponding refrigerant tank to open based on a preset refrigerant type.

[0010] This invention provides an integrated system for refrigerant charging in liquid-cooled units. It features multiple refrigerant charging paths that allow for rapid switching between different refrigerants, reducing manual operation costs to some extent. Each path is equipped with a dedicated refrigerant tank, a fifth solenoid valve, and a weight sensor, enabling flexible configuration and rapid switching between various refrigerant types. The control module precisely controls the opening and closing of the fifth solenoid valve on the corresponding path based on the preset refrigerant type. Combined with real-time feedback from the weight sensor on the charging volume, this forms a high-precision closed-loop control. This design effectively avoids the problems of long equipment adjustment time and high risk of cross-contamination caused by refrigerant changes in traditional charging processes. It significantly improves production flexibility and the adaptability of the charging process, making it particularly suitable for flexible production lines with multiple product types and small batches. While ensuring charging accuracy, it further improves the overall efficiency and automation level of the production line.

[0011] In one optional embodiment, the robotic arm module includes: an integrated system refrigerant pipeline, an image capture device, and a refrigerant charging nozzle connector. The first end of the integrated system refrigerant pipeline is connected to the inlet of a first pipeline, the outlet of a second pipeline, the inlet of a third pipeline, and the outlet of a fourth pipeline. The refrigerant charging nozzle connector is located at the second end of the integrated system refrigerant pipeline. The image capture device is located on the integrated system refrigerant pipeline, and both the image capture device and the refrigerant charging nozzle connector are electrically connected to the control module. Based on the position image information of the refrigerant charging nozzle of the liquid-cooled unit fed back by the image capture device, the control module controls the refrigerant charging nozzle connector to connect or disconnect from the refrigerant charging nozzle of the liquid-cooled unit.

[0012] Secondly, the present invention provides a control method for an integrated system for refrigerant charging of a liquid chiller unit, applied to a control module in the integrated system of the first aspect or any corresponding embodiment described above. The method includes: controlling a robotic arm module to move so that the refrigerant pipeline of the integrated system is connected to the refrigerant pipeline of the liquid chiller unit; controlling a vacuum pumping module to evacuate the refrigerant pipeline of the liquid chiller unit until the pressure of the refrigerant pipeline of the liquid chiller unit reaches a preset vacuum level; controlling a helium charging module to charge helium into the refrigerant pipeline of the liquid chiller unit to a target holding pressure and performing a holding pressure test; controlling a helium recovery module to recover the helium in the refrigerant pipeline of the liquid chiller unit, and before the helium recovery process ends, controlling a refrigerant injection module to charge refrigerant into the refrigerant pipeline of the liquid chiller unit.

[0013] The control method for an integrated system of refrigerant charging in liquid-cooled units provided by this invention integrates multiple processes such as vacuuming, helium charging and pressure holding, helium recovery, and refrigerant charging into a unified automated process, achieving one-click closed-loop control of the entire refrigerant charging process. This method initiates the refrigerant charging step before the helium recovery process ends, allowing the helium recovery and refrigerant charging processes to partially overlap in time, effectively shortening the overall process cycle and significantly increasing production line output per unit time. Simultaneously, this method uses preset key parameters such as vacuum level and target pressure holding to precisely control the process, reducing human intervention. This not only improves the consistency and reliability of the charging process but also effectively reduces quality risks caused by operational fluctuations, providing crucial methodological support for achieving efficient, stable, and large-scale production of liquid-cooled units.

[0014] In one optional implementation, the process of controlling the movement of the robotic arm module to connect the refrigerant pipeline of the integrated system with the refrigerant pipeline of the liquid chiller includes: acquiring the position image information of the refrigerant charging nozzle of the liquid chiller, and controlling the refrigerant charging nozzle connector of the robotic arm module to move according to a preset torque and connect with the refrigerant charging nozzle.

[0015] In one optional implementation, the process of controlling the helium recovery module to recover helium from the refrigerant pipeline of the liquid chiller includes: obtaining the purity information of the purified helium; determining whether the purity of the purified helium meets the preset purity based on the purity information; if it meets the preset purity, controlling the fourth solenoid valve to open and controlling the pressure of the fifth pipeline to be higher than the pressure of the helium tank, so that the purified helium flows into the helium tank; if it does not meet the preset purity, controlling the third solenoid valve to open and controlling the pressure of the fourth pipeline to be higher than the pressure of the waste gas storage tank, so that the purified helium flows into the waste gas storage tank.

[0016] In one optional implementation, the process of controlling the refrigerant injection module to charge refrigerant into the refrigerant pipeline of the liquid chiller includes: selecting the corresponding flow path from at least one set of independent refrigerant charging flow paths according to the preset refrigerant type; monitoring the remaining amount of refrigerant in real time through a weight sensor on the refrigerant charging flow path, and closing the corresponding flow path when the remaining amount reaches a preset value.

[0017] The control method for an integrated system for refrigerant charging of liquid-cooled units provided by this invention achieves accurate identification and rapid switching of multiple refrigerant types through intelligent matching of preset refrigerant types and independent charging flow paths, effectively improving the system's response speed and adaptability to different process requirements. During the charging process, real-time monitoring and feedback of the remaining refrigerant quantity using a weight sensor constructs a high-precision quantitative charging closed-loop control, completely overcoming problems such as inaccurate charging, overcharging, or undercharging caused by traditional methods relying on time or pressure estimation. This method not only ensures the consistency and compliance of refrigerant charging quantity for each liquid-cooled unit, significantly improving the uniformity and reliability of product quality, but also effectively avoids refrigerant waste, further reducing production costs and achieving dual optimization of quality control and economic benefits. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a composition diagram of an integrated system for refrigerant charging of a liquid-cooled unit according to an embodiment of the present invention; Figure 2 This is a detailed structural diagram of an integrated system for refrigerant charging of a liquid-cooled unit according to an embodiment of the present invention; Figure 3 This is a flowchart illustrating a control method for an integrated system for refrigerant charging of a liquid-cooled unit according to an embodiment of the present invention. Figure 4 This is a schematic flowchart illustrating the control method of the robotic arm module according to an embodiment of the present invention; Figure 5 This is a schematic flowchart illustrating the control method of the vacuum module according to an embodiment of the present invention; Figure 6 This is a schematic flowchart illustrating the control method for a helium-filling module according to an embodiment of the present invention. Figure 7 This is a schematic flowchart of the pressure holding control method according to an embodiment of the present invention; Figure 8 This is a schematic flowchart illustrating the control method of the helium recovery module according to an embodiment of the present invention. Figure 9 This is a schematic flowchart illustrating the control method of the refrigerant injection module according to an embodiment of the present invention; Figure 10 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] It is understood that before using the technical solutions disclosed in the various embodiments of the present invention, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in the present invention and their authorization should be obtained in accordance with relevant laws and regulations through appropriate means.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] This embodiment provides an integrated system for refrigerant charging of liquid-cooled units, such as... Figure 1 As shown, it includes: control module 1, vacuum module 2, helium filling module 3, helium recovery module 4, refrigerant injection module 5, and robotic arm module 6. The robotic arm module 6 has a built-in integrated system refrigerant pipeline.

[0024] Figure 1 In the middle, the control module is electrically connected to the vacuum pumping module 2, the helium filling module 3, the helium recovery module 4, the refrigerant injection module 5, and the robotic arm module 6, and outputs corresponding control commands.

[0025] Figure 1 In this system, controllable solenoid valves are installed at key interfaces of different pipelines. These controllable solenoid valves are electrically connected to control module 1. Through centralized scheduling by control module 1, the opening and closing states and timing of each controllable solenoid valve can be precisely controlled according to the needs of the current process flow, thereby guiding the helium gas to flow in a directional and orderly manner in the pipeline network according to the direction indicated by the dotted arrows in the figure. This centralized valve control and flow direction management mechanism effectively prevents gas crosstalk between different flow paths, ensuring the working accuracy and reliability of the entire system.

[0026] Figure 1In the process, the vacuum module 2 is connected to the outlet of the first pipeline 71 and is connected to one end of the refrigerant pipeline 61 of the integrated system through the inlet of the first pipeline 71. The vacuum module 2 is used to evacuate the refrigerant pipeline of the liquid chiller unit based on control commands.

[0027] Specifically, Figure 1 As shown by the dashed arrow, the vacuum module 2 is connected in series with the refrigerant pipeline 61 of the integrated system through the first pipeline 71. When the system performs the vacuuming process, the control module 1 issues a command to start the vacuum module 2. At this time, the gas in the pipeline is drawn away from the refrigerant pipeline of the liquid cooler unit along the first pipeline 71, forming a stable negative pressure environment.

[0028] Figure 1 In the middle, the helium filling module 3 is connected to the inlet of the second pipeline 72 and is connected to the first end of the integrated system refrigerant pipeline 61 through the outlet of the second pipeline 72. The helium filling module 3 is used to fill the refrigerant pipeline of the liquid chiller unit with helium based on control commands.

[0029] Specifically, Figure 1 In this system, the inlet of the second pipe 72 is connected to the high-pressure outlet of the helium-filling module 3, while the outlet of the second pipe 72 merges into the first end of the integrated system refrigerant pipe 61. When the system enters the helium-filling and pressure-holding stage, the control module 1 sends a command to the helium-filling module 3, which then starts and releases high-pressure helium. The helium is stably delivered through the second pipe 72 and finally injected into the refrigerant pipe of the liquid chiller unit through the integrated system refrigerant pipe 61.

[0030] Figure 1 In the middle, the helium recovery module 4 is connected to the outlet of the third pipeline 73 and is connected to the first end of the integrated system refrigerant pipeline 61 through the inlet of the third pipeline 73. The helium recovery module 4 is used to recover and purify the helium in the refrigerant pipeline of the liquid chiller based on control commands.

[0031] Specifically, Figure 1 In this system, the inlet of the third pipe 73 is connected to the first end of the refrigerant pipe 61 of the integrated system, and the outlet of the third pipe 73 is connected to the inlet of the helium recovery module 4. When the system enters the helium recovery stage, the control module 1 sends a command to the helium recovery module 4. At this time, the helium in the refrigerant pipe of the liquid chiller enters the recovery channel through the inlet of the third pipe 73 under the action of pressure difference, and flows along the third pipe 73 to the helium recovery module 4. The helium recovery module 4 purifies the recovered helium through a multi-stage purification device, including removing moisture, oxygen and other impurities, and finally obtains high-purity helium that meets the reuse standards.

[0032] Figure 1In this system, the refrigerant injection module 5 is connected to the inlet of the fourth pipe 74 and to the first end of the integrated system refrigerant pipe 61 via the outlet of the fourth pipe 74. The refrigerant injection module 5 is used to charge refrigerant into the refrigerant pipe of the liquid chiller unit based on control commands. The helium recovery module 4 and the refrigerant injection module 5 operate in parallel for a portion of the time.

[0033] Specifically, Figure 1 In this system, the inlet of the fourth pipe 74 is connected to the refrigerant outlet of the refrigerant injection module 5, while the outlet of the fourth pipe 74 is connected to the first end of the integrated system refrigerant pipeline 61. When the system receives a charging command, the refrigerant injection module 5, according to the control command, delivers the specified type and dosage of refrigerant through the fourth pipe 74 to the integrated system refrigerant pipeline 61, and finally injects it into the refrigerant pipeline of the liquid chiller unit. The helium recovery module 4 and the refrigerant injection module 5 operate in parallel during certain working periods, effectively shortening the overall process cycle. Refrigerant charging is performed simultaneously with the helium recovery and purification process, significantly improving equipment utilization and production cycle time.

[0034] Figure 1 In the middle, the robotic arm module 6 is used to control the connection and disconnection between the second end of the refrigerant pipeline 61 of the integrated system and the refrigerant pipeline of the liquid chiller unit based on control commands.

[0035] Specifically, Figure 1 In this system, the robotic arm module 6 controls the connection status between the second end of the integrated system's refrigerant pipeline 61 and the refrigerant pipeline of the liquid chiller unit, thereby managing the fluid flow of the entire system. Upon receiving control commands, the robotic arm module 6 can precisely execute docking and disengagement actions, ensuring complete system isolation when not in operation and establishing a reliable fluid channel during operation. This achieves automated control of pipeline connections and, through precise sealing docking, ensures the integrity and safety of various media during transmission, providing a fundamental guarantee for the fully automated operation of the system.

[0036] The integrated system for refrigerant charging of liquid-cooled units provided in this embodiment allows the helium recovery module and the refrigerant charging module to operate in parallel for a portion of the time, significantly shortening the entire charging cycle and improving production line efficiency. Through a helium recovery and purification mechanism, the system achieves the recycling of high-cost helium, substantially reducing production material costs. The robotic arm module further improves the precision and automation level of pipeline connections, reducing human error. Overall, it has significant comprehensive advantages in improving charging quality and reducing energy consumption and labor costs. This embodiment integrates multiple process modules such as vacuuming, helium charging, helium recovery, and refrigerant charging into a single system, and uses a unified control module to achieve fully automated operation, effectively solving the problems of dispersed equipment, reliance on manual processes, and low production efficiency in the traditional liquid-cooled unit refrigerant charging process.

[0037] In some alternative implementations, such as Figure 2 As shown, the vacuum module 2 includes a vacuum pump 21 and a first solenoid valve 22. The vacuum pump 21 is located at the outlet of the first pipeline 71, and the first solenoid valve 22 is located on the first pipeline 71. Both the vacuum pump 21 and the first solenoid valve 22 are electrically connected to the control module. Figure 2 The paths connecting to the control module are not shown; after the first solenoid valve 22 and vacuum pump 21 are opened based on the control command, vacuum pump 21 evacuates the refrigerant pipeline of the liquid cooling unit, and control module 1 determines whether the evacuation process is completed based on the pressure value fed back by robotic arm module 6.

[0038] Specifically, Figure 2 In this system, vacuum pump 21 is installed at the outlet end of the first pipeline 71, undertaking the function of gas extraction, extracting gas from the refrigerant pipeline of the liquid chiller unit, and reducing the gas pressure in the pipeline; the first solenoid valve 22 is connected in series in the first pipeline 71, used to control the opening and closing of the vacuum passage in the first pipeline 71, connecting or disconnecting the connection between the refrigerant pipeline of the liquid chiller unit and the vacuum extraction pipeline. Vacuum extraction is used to completely remove air and moisture from the refrigerant pipeline of the liquid chiller unit. Both vacuum pump 21 and the first solenoid valve 22 are subject to unified scheduling by the control module. When the system starts the vacuum extraction process, the control module synchronously sends an opening command to the first solenoid valve 22 and vacuum pump 21, forming a continuous vacuum extraction loop. During this process, the control module 1 continuously collects real-time pressure data fed back by the first pressure sensor integrated on the robotic arm module 6, and dynamically judges whether the vacuum extraction process has reached the completion standard by comparing it with the preset vacuum threshold, thereby realizing closed-loop control and process automation.

[0039] It should be noted that the vacuuming process serves two purposes: first, to verify whether there are any significant leaks in the refrigerant piping of the liquid chiller unit; and second, to ensure, to a certain extent, the purity of the helium gas that will be introduced into the refrigerant piping.

[0040] In some alternative implementations, such as Figure 2 As shown, the helium filling module 3 includes a helium tank 31, a pressure regulating device 32, and a second solenoid valve 33. The helium tank 31 is located at the inlet of the second pipeline 72. The pressure regulating device 32 and the second solenoid valve 33 are sequentially arranged on the second pipeline 72 along the helium flow direction. The helium tank 31, the pressure regulating device 32, and the second solenoid valve 33 are all electrically connected to the control module. The pressure regulating device 32 is used to regulate the pressure of the second pipeline 72 based on control commands. After the second solenoid valve 33 and the helium tank 31 are opened based on control commands, the helium tank 31 fills the refrigerant pipeline of the liquid chiller with helium.

[0041] Specifically, Figure 2In this system, the second solenoid valve 33 is used to connect or disconnect the refrigerant pipeline of the liquid chiller unit and the second pipeline 72; the first pressure sensor is electrically connected to the control module and is used to provide real-time feedback on the pressure P4 in the helium tank 31. When the system executes the helium charging command, the control module 1 simultaneously opens the helium tank 31 and the second solenoid valve 33, and helium then enters the second pipeline 72. During this process, the pressure regulating device 32 precisely controls the helium output pressure in the second pipeline 72 according to the regulating signal issued by the control module 1, ensuring that helium is charged into the refrigerant pipeline of the liquid chiller unit at a stable and controllable pressure, thus establishing an accurate pressure reference for subsequent pressure holding tests.

[0042] It should be noted that the helium filling module is used to fill the refrigerant lines of the liquid chiller with helium, mainly for pressure testing of the fluorine lines. Helium is chosen for pressure testing because, compared with nitrogen, it has a shorter pressure holding time, extremely high leak detection accuracy, excellent system compatibility, and is not affected by ambient temperature. Therefore, it has sufficient advantages for use in continuous production.

[0043] In some alternative implementations, such as Figure 2 As shown, the helium recovery module 4 includes: a buffer tank 41, a purification device 42, a third solenoid valve 43, a fourth solenoid valve 44, a purity analyzer 45, and a waste gas storage tank 46. The waste gas storage tank 46 is located at the outlet of the third pipeline 73. The buffer tank 41, the purification device 42, the purity analyzer 45, and the third solenoid valve 43 are sequentially arranged on the third pipeline 73 along the helium recovery direction. The helium tank 31 is connected to the third pipeline 73 between the third solenoid valve 43 and the purity analyzer 45 through the fifth pipeline 75. The fourth solenoid valve 44 is located on the fifth pipeline 75. The third solenoid valve 43, the fourth solenoid valve 44, and the purity analyzer 45 are all electrically connected to the control module.

[0044] Figure 2 In the process, buffer tank 41 is used to stabilize the pressure of helium recovered from the refrigerant pipeline of the liquid cooling unit; purification device 42 is used to purify the recovered helium; purity analyzer 45 detects the purity of the purified helium based on control commands and sends it to the control module. The control module controls the third solenoid valve 43 or the fourth solenoid valve 44 to open based on the purity information, so that helium that meets the preset purity flows into helium tank 31, or helium that does not meet the preset purity flows into waste gas storage tank 46.

[0045] Specifically, Figure 2In the helium recovery module 4, the solenoid valve is used to connect or disconnect the refrigerant line of the liquid chiller and the third line 73; the check valve prevents helium in the third line 73 from flowing back into the refrigerant line of the liquid chiller; the buffer tank 41 is used to balance the pressure fluctuations of the helium recovery line and stabilize the pressure of the third line 73; the filter is used to filter out any solid particles (such as metal shavings and dust) that may remain, preventing blockage; the second pressure sensor is used to provide real-time feedback on the pressure P5 in the helium recovery line; and the regulating valve is used to regulate the pressure of the third line 73.

[0046] Specifically, Figure 2 The purification device 42 includes: an activated alumina tank, a copper-based deoxidizer tank, a palladium membrane, and a pressure swing adsorption (PSA) device. The activated alumina tank is used to adsorb moisture from the recovered helium; the copper-based deoxidizer tank is used to adsorb oxygen from the recovered helium; the palladium membrane is used to adsorb hydrogen from the recovered helium; the PSA circulates and separates impurities from the recovered helium through pressure swing adsorption and membrane separation to achieve purification; the purity analyzer 45 is used to analyze the purity of the recovered helium; the fourth solenoid valve 44 is used to connect or disconnect the helium tank 31 and the third pipeline 73; the one-way valve is used to prevent helium in the helium tank 31 from flowing back into the third pipeline 73; the third solenoid valve 43 is used to connect or disconnect the waste gas storage tank 46 and the third pipeline 73; the waste gas storage tank 46 is used to store helium that does not meet the purity requirements; and the second pressure sensor is used to provide real-time feedback on the pressure P6 in the non-reusable storage tank.

[0047] Specifically, Figure 2 In this system, buffer tank 41 is connected to the initial section of the recovery pipeline to equalize the pressure of helium recovered from the refrigerant pipeline of the liquid chiller unit and eliminate airflow pulsation. Purification device 42 employs a multi-stage adsorption and filtration structure to deeply purify the pressure-stabilized helium, removing impurities such as moisture and oxygen. Purity analyzer 45 monitors the quality of the purified helium in real time and sends the purity data to the control module. The control module judges the purity based on a preset purity threshold. If the purity meets the standard, the third solenoid valve 43 is opened to allow qualified helium to flow back to helium tank 31 for recycling; if the purity does not meet the standard, the fourth solenoid valve 44 is opened to guide the unqualified gas into waste gas storage tank 46. This closed-loop control mechanism achieves intelligent identification and graded recovery of helium resources, significantly improving resource utilization.

[0048] In some optional embodiments, the refrigerant charging module 5 includes: at least one independent refrigerant charging flow path, each refrigerant charging flow path including a refrigerant tank (#511~#51n) and a fifth solenoid valve (#521~#52n), wherein the fifth solenoid valve is electrically connected to the control module; a weight sensor (#531~#53n) is installed below each refrigerant tank, the weight sensor is electrically connected to the control module, and is used to send the remaining weight of the refrigerant in the refrigerant tank to the control module; the control module controls the fifth solenoid valve on the flow path of the corresponding refrigerant tank to open based on a preset refrigerant type.

[0049] Specifically, Figure 2 In this system, high-precision weight sensors are installed below each refrigerant tank. These sensors continuously monitor the real-time weight of the refrigerant inside the tank and feed the data back to the control module. When the system starts the charging process, the control module automatically selects and opens the fifth solenoid valve on the corresponding flow path according to the preset refrigerant type, thereby achieving precise control and quantitative charging of the specified refrigerant. This multi-flow path design significantly improves the adaptability and production efficiency of the equipment.

[0050] The integrated refrigerant charging system for liquid-cooled units provided in this embodiment features multiple refrigerant charging flow paths, enabling rapid switching between different refrigerants and reducing manual operation costs to some extent. Each flow path is equipped with a dedicated refrigerant tank, a fifth solenoid valve, and a weight sensor, allowing for flexible configuration and rapid switching of various refrigerant types. The control module can precisely control the opening and closing of the fifth solenoid valve on the corresponding flow path according to the preset refrigerant type, and combined with real-time feedback of the charging amount from the weight sensor, forms a high-precision closed-loop control. This design effectively avoids the problems of long equipment adjustment time and high risk of cross-contamination caused by refrigerant changes in traditional charging processes, significantly improving production flexibility and the adaptability of the charging process. It is particularly suitable for flexible production lines with multiple varieties and small batches, further improving the overall efficiency and automation level of the production line while ensuring charging accuracy.

[0051] In some alternative implementations, such as Figure 2 As shown, the robotic arm module 6 includes: an integrated system refrigerant pipeline 61, an image capture device 62, and a refrigerant charging nozzle connector 63. The first end of the integrated system refrigerant pipeline 61 is connected to the inlet of the first pipeline 71, the outlet of the second pipeline 72, the inlet of the third pipeline 73, and the outlet of the fourth pipeline 74. The refrigerant charging nozzle connector 63 is located at the second end of the integrated system refrigerant pipeline 61. The image capture device 62 is located on the integrated system refrigerant pipeline 61. Both the image capture device 62 and the refrigerant charging nozzle connector 63 are electrically connected to the control module. Based on the position image information of the refrigerant charging nozzle of the liquid chiller unit fed back by the image capture device 62, the control module controls the refrigerant charging nozzle connector 63 to connect or disconnect with the refrigerant charging nozzle of the liquid chiller unit.

[0052] Specifically, Figure 2 In this system, an image capture device 62 is installed at a suitable location on the pipeline to collect real-time visual information of the refrigerant charging nozzle of the liquid-cooled unit. Both the image capture device 62 and the refrigerant charging nozzle connector 63 are electrically connected to the control module 1. The control module 1 analyzes the image of the refrigerant charging nozzle position fed back by the image capture device 62 to generate precise spatial coordinates and attitude data, and then drives the refrigerant charging nozzle connector 63 to complete the automatic alignment, engagement, or disengagement operation with the refrigerant charging nozzle of the liquid-cooled unit according to a preset torque, realizing fully unmanned and precise docking.

[0053] Specifically, Figure 2 In this system, all solenoid valves are normally closed. The control module includes vacuum mode, helium charging mode, pressure holding mode, helium recovery mode, and refrigerant charging mode. When a start command needs to be sent to a certain mode, the control module sends a command to the corresponding solenoid valve, causing the solenoid valve to open and connecting the pipelines of each mode to the refrigerant pipeline of the liquid chiller to complete the corresponding process.

[0054] This embodiment provides a control method for an integrated system for refrigerant charging of a liquid-cooled unit, applied to the control module of the integrated system described in the above embodiment, such as... Figure 3 As shown, the method includes: Step S1: Control the movement of the robotic arm module to connect the refrigerant lines of the integrated system with the refrigerant lines of the liquid chiller unit.

[0055] Specifically, refer to Figure 2 Before the control module of the integrated system begins operation, the user manually sets the refrigerant type, refrigerant charge amount, helium purity requirement, robotic arm positioning time T1, rotating device torque, vacuuming time T2, vacuum negative pressure value P1, holding pressure P2, and holding time T3 via the manual operation interface. The user also confirms that the refrigerant type and piping settings are correct. The manual operation interface is for manual control, parameter modification, and observation of the unit's operating status. The workflow of each operating mode of the integrated system is as follows: connection of the liquid chiller unit's refrigerant piping and robotic arm module → vacuuming mode → helium charging mode → holding pressure mode → helium recovery mode → refrigerant injection mode → disconnection of the liquid chiller unit's refrigerant piping and robotic arm module. The control module controls all actions of the equipment, including the robotic arm's movements, the start, switch, and stop of each mode, as well as mode operation timing and fault alarm functions.

[0056] Specifically, the process of controlling the movement of the robotic arm module to connect the refrigerant pipeline of the integrated system with the refrigerant pipeline of the liquid chiller includes: by acquiring the position image information of the refrigerant charging nozzle of the liquid chiller, controlling the refrigerant charging nozzle connector of the robotic arm module to move according to a preset torque and connect with the refrigerant charging nozzle.

[0057] Specifically, Figure 4When the liquid chiller unit arrives at the working area of ​​the integrated equipment, the control module receives a control command, controls the robotic arm module to move, and instructs the image capture device in the robotic arm module to locate the refrigerant charging nozzle on the refrigerant line of the liquid chiller unit. The positioning process lasts for a certain time T1. If the positioning is completed within the specified time T1, the control module sends a fault alarm signal. When the positioning is successful within the specified time T1, the control module sends a refrigerant charging nozzle connection signal, controlling the rotating device on the robotic arm module to connect the refrigerant charging nozzle connector to the refrigerant charging nozzle on the liquid chiller unit's refrigerant line with a set torque. At this point, the connection between the integrated system and the liquid chiller unit's refrigerant line is completed. The third pressure sensor continuously monitors the pressure on the integrated system's refrigerant line to ensure normal pressure changes.

[0058] Step S2: Control the vacuum module to evacuate the refrigerant lines of the liquid chiller until the pressure of the refrigerant lines of the liquid chiller reaches the preset vacuum level.

[0059] Specifically, such as Figure 5 As shown, after receiving the system connection completion signal, the control module initiates the vacuuming mode. The control module sends an open command to the first solenoid valve and a start command to the vacuum pump. The vacuuming process is executed for a certain period of time T2. The control module continuously monitors the pressure of the third pressure sensor. When the pressure P3 of the third pressure sensor does not reach the preset P1, the control module first determines whether the execution time exceeds T2. If it does, a fault alarm signal is sent; if the execution time does not exceed T2, the vacuuming operation continues. When the pressure P3 of the third pressure sensor reaches P1, the vacuuming of the refrigerant pipeline of the liquid cooling unit is completed, and the vacuum pump and the first solenoid valve are shut down.

[0060] Step S3: Control the helium charging module to charge helium into the refrigerant pipeline of the liquid chiller to the target pressure holding pressure, and perform a pressure holding test.

[0061] Specifically, such as Figure 6 As shown, after receiving the vacuuming completion signal, the control module initiates the vacuuming mode. The control module sends an open command to the second solenoid valve and a start command to the pressure regulating device, controlling the pressure regulating device to reduce the pressure until the pressure in the second pipeline is lower than the pressure P4 in the helium tank. At this time, helium from the helium tank will fill the refrigerant pipeline of the liquid cooling unit. The control module continuously monitors the pressure of the third pressure sensor. When the pressure P3 of the third pressure sensor reaches the set holding pressure P2, the control module sends a command to close the second solenoid valve and the pressure regulating device, at which point the helium filling is complete.

[0062] Specifically, such as Figure 7As shown, after the control module receives the helium and completes the pressure holding time, it starts the pressure holding timer. When the pressure holding time T3 is reached, if the pressure of the first pressure sensor is not less than the pressure holding pressure P2, the pressure holding is successful; otherwise, the control module will send a fault alarm signal.

[0063] Step S4: Control the helium recovery module to recover helium from the refrigerant pipeline of the liquid chiller, and control the refrigerant injection module to charge the refrigerant pipeline of the liquid chiller before the helium recovery process ends.

[0064] Specifically, the process of controlling the helium recovery module to recover helium from the refrigerant piping of the liquid chiller includes: (1) Obtain the purity information of the purified helium and determine whether the purity of the purified helium meets the preset purity based on the purity information.

[0065] (2) If the purity of the purified helium meets the preset purity, the fourth solenoid valve is opened and the pressure of the fifth pipeline is controlled to be higher than the pressure of the helium tank, and the purified helium flows into the helium tank.

[0066] (3) If the purity of the purified helium does not meet the preset purity, the third solenoid valve is opened and the pressure of the fourth pipeline is controlled to be higher than the pressure of the waste gas storage tank, and then the purified helium flows into the waste gas storage tank.

[0067] Specifically, such as Figure 8 As shown, after receiving the pressure holding completion signal, the control module initiates the helium recovery mode. The control module sends an open command to the solenoid valve and an open command to the pressure regulating valve, controlling the pressure regulating valve to reduce the pressure so that the pressure P3 of the third pressure sensor is greater than the pressure P5 in the third pipeline. At this time, helium in the refrigerant pipeline of the liquid chiller unit will flow into the helium recovery pipeline. The control module continuously monitors the pressure of the third pressure sensor. The recovered helium passes through a buffer tank to balance pressure fluctuations. A filter removes any metal debris and dust that may be present in the helium. The helium then sequentially passes through an activated alumina tank, a copper-based deoxidizer tank, and a palladium membrane to remove moisture, oxygen, and hydrogen. Finally, it undergoes a PSA cycle to separate impurities for purification. When the pressure P3 of the third pressure sensor is less than P1, the control module sends a close command to the solenoid valve.

[0068] Specifically, such as Figure 8As shown, after the online helium purity analyzer detects that the helium meets the required purity, it sends a pass signal to the control module. The control module then issues an open command to the fourth solenoid valve and controls the regulating valve to increase the pressure, making the pressure P5 in the third pipeline greater than the pressure P3 in the helium tank. At this time, the helium in the third pipeline will flow into the helium tank, achieving helium recovery. If the online helium purity analyzer detects that the helium does not meet the required purity, it sends a fail signal to the control module. The control module then issues an open command to the third solenoid valve and controls the regulating valve to increase the pressure, making the pressure P5 in the third pipeline greater than the pressure P6 in the waste gas storage tank. At this time, the helium in the third pipeline will flow into the waste gas storage tank.

[0069] The control method for the integrated system of refrigerant charging in liquid-cooled units provided in this embodiment integrates multiple processes such as vacuuming, helium charging and pressure holding, helium recovery, and refrigerant charging into a unified automated process, achieving one-click closed-loop control of the entire refrigerant charging process. This method initiates the refrigerant charging step before the helium recovery process ends, allowing the helium recovery and refrigerant charging processes to partially overlap in time, effectively shortening the overall process cycle and significantly improving production line output per unit time. Simultaneously, this method uses preset key parameters such as vacuum level and target pressure holding to precisely control the process, reducing human intervention. This not only improves the consistency and reliability of the charging process but also effectively reduces quality risks caused by operational fluctuations, providing crucial methodological support for achieving efficient, stable, and large-scale production of liquid-cooled units.

[0070] In some optional implementations, the process of controlling the refrigerant injection module to charge refrigerant into the refrigerant pipeline of the liquid chiller includes: selecting the corresponding flow path from at least one set of independent refrigerant charging flow paths according to the preset refrigerant type; monitoring the remaining amount of refrigerant in real time through a weight sensor on the refrigerant charging flow path, and closing the corresponding flow path when the remaining amount reaches a preset value.

[0071] Specifically, such as Figure 9 As shown, when the control module receives the closing of the solenoid valve during the helium recovery stage, it initiates the refrigerant injection mode. The control module selects the corresponding refrigerant pipeline based on the refrigerant type required at input. The control module issues an open command to the fifth solenoid valve on the corresponding refrigerant pipeline. Because a negative pressure has been created in the refrigerant pipeline of the liquid chiller during helium recovery, the refrigerant in the refrigerant tank will be injected into the refrigerant pipeline of the liquid chiller. The weight sensor monitors the weight of the refrigerant tank that is outputting refrigerant in real time and feeds it back to the control module. When the weight decreases to the set refrigerant injection value, the control module issues a close command to the fifth solenoid valve on the corresponding refrigerant pipeline, completing the refrigerant injection.

[0072] Specifically, refer to Figure 4When the control module receives a signal that the refrigerant charging is complete, it sends a signal to disconnect the refrigerant charging nozzle, controls the rotating device on the robotic arm module to disconnect the refrigerant charging nozzle from the connector and the refrigerant charging nozzle on the refrigerant pipeline, returns the robotic arm module to its original position, and outputs that the process has been completed, allowing the liquid cooling unit to proceed to the next process.

[0073] The control method for the integrated system of refrigerant charging for liquid chiller units provided in this embodiment achieves accurate identification and rapid switching of multiple refrigerant types through intelligent matching of preset refrigerant types and independent charging flow paths, effectively improving the system's response speed and adaptability to different process requirements. During the charging process, real-time monitoring and feedback of the remaining refrigerant quantity using a weight sensor constructs a high-precision quantitative charging closed-loop control, completely overcoming problems such as inaccurate charging quantity, overcharging, or undercharging caused by traditional estimations based on time or pressure. This method not only ensures the consistency and compliance of refrigerant charging quantity for each liquid chiller unit, significantly improving the uniformity and reliability of product quality, but also effectively avoids refrigerant waste, further reducing production costs and achieving dual optimization of quality control and economic benefits.

[0074] Figure 10 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0075] The following is a detailed reference. Figure 10 The diagram illustrates a structural schematic suitable for implementing an electronic device according to embodiments of the present invention. The electronic device may include a processor (e.g., a central processing unit, graphics processor, etc.) 001, which can perform various appropriate actions and processes according to a program stored in read-only memory (ROM) 002 or a program loaded from memory 008 into random access memory (RAM) 003. The RAM 003 also stores various programs and data required for the operation of the electronic device. The processor 001, ROM 002, and RAM 003 are interconnected via bus 004. An input / output (I / O) interface 005 is also connected to bus 004.

[0076] Typically, the following devices can be connected to I / O interface 005: input devices 006 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 007 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; memory devices 008 including, for example, magnetic tapes, hard disks, etc.; and communication devices 009. Communication device 009 allows electronic devices to exchange data via wireless or wired communication with other devices. Although Figure 10 Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown, and more or fewer devices may be implemented or have instead.

[0077] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication device 009, or installed from memory 008, or installed from ROM 002. When the computer program is executed by processor 001, it performs the functions defined in the control method for an integrated system for refrigerant charging of a liquid-cooled unit according to embodiments of the present invention.

[0078] Figure 10 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of the embodiments of the present invention.

[0079] This invention also provides a computer-readable storage medium. The methods described above according to embodiments of the invention can be implemented in hardware or firmware, or implemented as computer code that can be recorded on a storage medium, or implemented as computer code downloaded via a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and then stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that the computer, processor, microprocessor controller, or programmable hardware includes storage components capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the control method for the integrated system for refrigerant charging of a liquid-cooled unit shown in the above embodiments is implemented.

[0080] A portion of this invention can be applied as a computer program product, such as computer program instructions, which, when executed by a computer, can invoke or provide the methods and / or technical solutions according to the invention through the operation of the computer. Those skilled in the art will understand that the forms in which computer program instructions exist in a computer-readable medium include, but are not limited to, source files, executable files, installation package files, etc. Correspondingly, the ways in which computer program instructions are executed by a computer include, but are not limited to: the computer directly executing the instructions, or the computer compiling the instructions and then executing the corresponding compiled program, or the computer reading and executing the instructions, or the computer reading and installing the instructions and then executing the corresponding installed program. Here, the computer-readable medium can be any available computer-readable storage medium or communication medium accessible to a computer.

[0081] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An integrated system for liquid chiller refrigerant charge, characterized by, include: The system includes a control module, a vacuuming module, a helium filling module, a helium recovery module, a refrigerant injection module, and a robotic arm module. The robotic arm module has a built-in integrated system refrigerant piping. The control module is electrically connected to the vacuuming module, helium filling module, helium recovery module, refrigerant injection module, and robotic arm module, and outputs corresponding control commands. The vacuum module is connected to the outlet of the first pipeline and to one end of the refrigerant pipeline of the integrated system through the inlet of the first pipeline. The vacuum module is used to vacuum the refrigerant pipeline of the liquid chiller unit based on the control command. The helium-filling module is connected to the inlet of the second pipeline and to the first end of the refrigerant pipeline of the integrated system through the outlet of the second pipeline. The helium-filling module is used to fill the refrigerant pipeline of the liquid chiller unit with helium based on the control command. The helium recovery module is connected to the outlet of the third pipeline and to the first end of the refrigerant pipeline of the integrated system through the inlet of the third pipeline. The helium recovery module is used to recover and purify the helium in the refrigerant pipeline of the liquid chiller based on the control command. The refrigerant injection module is connected to the inlet of the fourth pipeline and to the first end of the refrigerant pipeline of the integrated system through the outlet of the fourth pipeline. The refrigerant injection module is used to charge refrigerant into the refrigerant pipeline of the liquid chiller unit based on the control command. The robotic arm module is used to control the connection and disconnection between the second end of the refrigerant pipeline of the integrated system and the refrigerant pipeline of the liquid chiller unit based on the control commands. The helium recovery module and the refrigerant injection module operate in parallel for a certain period of time. The helium filling module includes: a helium tank, a pressure regulating device, and a second solenoid valve; The helium recovery module includes: a buffer tank, a purification device, a third solenoid valve, a fourth solenoid valve, a purity analyzer, and a waste gas storage tank. The waste gas storage tank is located at the outlet of the third pipeline. The buffer tank, purification device, purity analyzer and third solenoid valve are sequentially arranged on the third pipeline along the helium recovery direction. The helium tank is connected to the third pipeline between the third solenoid valve and the purity analyzer through the fifth pipeline. The fourth solenoid valve is located on the fifth pipeline. The third solenoid valve, the fourth solenoid valve, and the purity analyzer are all electrically connected to the control module. The buffer tank is used to stabilize the pressure of helium recovered from the refrigerant pipeline of the liquid chiller unit; The purification device is used to purify the recovered helium; The purity analyzer detects the purity of the purified helium based on the control command and sends it to the control module. The control module controls the third or fourth solenoid valve to open based on the purity information, so that helium that meets the preset purity flows into the helium tank, or helium that does not meet the preset purity flows into the waste gas storage tank. The robotic arm module includes: an integrated system refrigerant piping, an image capture device, and a refrigerant charging port connector, wherein... The first end of the refrigerant pipeline of the integrated system is connected to the inlet of the first pipeline, the outlet of the second pipeline, the inlet of the third pipeline, and the outlet of the fourth pipeline. The refrigerant charging nozzle connector is located at the second end of the refrigerant pipeline of the integrated system, and the image capture device is located on the refrigerant pipeline of the integrated system. Both the image capture device and the refrigerant charging nozzle connector are electrically connected to the control module. The control module controls the refrigerant charging port to connect or disconnect with the refrigerant charging port of the liquid cooling unit based on the position image information of the refrigerant charging port of the liquid cooling unit fed back by the image capture device.

2. The integrated system of claim 1, wherein, The vacuum module includes: a vacuum pump and a first solenoid valve, wherein... The vacuum pump is located at the outlet of the first pipeline, and the first solenoid valve is located on the first pipeline. Both the vacuum pump and the first solenoid valve are electrically connected to the control module. After the first solenoid valve and the vacuum pump are both activated based on the control command, the vacuum pump evacuates the refrigerant pipeline of the liquid cooling unit, and the control module determines whether the evacuation process is completed based on the pressure value fed back by the robotic arm module.

3. The integrated system according to claim 1, characterized in that, The helium tank is located at the inlet of the second pipeline, and the pressure regulating device and the second solenoid valve are sequentially arranged on the second pipeline along the helium flow direction. The helium tank, the pressure regulating device, and the second solenoid valve are all electrically connected to the control module. The pressure regulating device is used to regulate the pressure of the second pipeline based on the control command; After the second solenoid valve and the helium tank are both opened based on the control command, the helium tank fills the refrigerant pipeline of the liquid cooling unit with helium.

4. The integrated system according to claim 1, characterized in that, The refrigerant injection module includes: at least one independent refrigerant charging flow path, each refrigerant charging flow path including a refrigerant tank and a fifth solenoid valve, wherein... The fifth solenoid valve is electrically connected to the control module; A weight sensor is installed below each of the refrigerant tanks. The weight sensor is electrically connected to the control module and is used to send the remaining weight of the refrigerant in the refrigerant tank to the control module. The control module controls the opening of the fifth solenoid valve on the flow path of the corresponding refrigerant tank based on the preset refrigerant type.

5. A control method for an integrated system for refrigerant charging of a liquid-cooled unit, characterized in that, The method, applied to a control module in the integrated system according to any one of claims 1 to 4, comprises: The movement of the control robotic arm module enables the refrigerant piping of the integrated system to connect with the refrigerant piping of the liquid chiller unit; The vacuum module is controlled to evacuate the refrigerant lines of the liquid chiller until the pressure in the refrigerant lines of the liquid chiller reaches the preset vacuum level. The helium charging module is controlled to charge helium into the refrigerant pipeline of the liquid chiller to the target pressure holding pressure, and a pressure holding test is performed. The control helium recovery module recovers helium from the refrigerant pipeline of the liquid chiller, and before the helium recovery process ends, the control refrigerant injection module charges the refrigerant pipeline of the liquid chiller with refrigerant.

6. The control method according to claim 5, characterized by The process of controlling the movement of the robotic arm module to connect the refrigerant piping of the integrated system with the refrigerant piping of the liquid chiller unit includes: By acquiring the positional image information of the refrigerant charging nozzle of the liquid cooling unit, the refrigerant charging nozzle connector of the robotic arm module is controlled to move according to a preset torque and then dock with the refrigerant charging nozzle.

7. The control method according to claim 5, characterized by, The process of the controlled helium recovery module recovering helium from the refrigerant pipeline of the liquid chiller unit includes: To obtain the purity information of the purified helium, Based on the purity information, determine whether the purity of the purified helium meets the preset purity. If the conditions are met, the fourth solenoid valve is opened, and the pressure in the fifth pipeline is controlled to be higher than the pressure in the helium tank, so that the purified helium flows into the helium tank. If the conditions are not met, the third solenoid valve is opened, and the pressure in the third pipeline is controlled to be higher than the pressure in the waste gas storage tank before the purified helium flows into the waste gas storage tank.

8. The control method according to claim 5, characterized by, The process of the refrigerant injection module charging refrigerant into the refrigerant pipeline of the liquid chiller unit includes: According to the preset refrigerant type, select the corresponding flow path from at least one independent refrigerant charging flow path to open; The remaining amount of refrigerant is monitored in real time by a weight sensor on the refrigerant charging path, and the corresponding flow path is shut off when the remaining amount reaches a preset value.

Images