Control method of liquid cooling unit, electronic equipment and computer readable medium

Abstract

The invention discloses a control method of a liquid cooling unit, electronic equipment and a computer readable medium, the liquid cooling unit further comprises a communicating pipeline communicating a first liquid cooling cabinet and a second liquid cooling cabinet, and a liquid inlet pipeline and a liquid outlet pipeline corresponding to the first liquid cooling cabinet are matched with a liquid inlet pipeline and a liquid outlet pipeline corresponding to the second liquid cooling cabinet in length. The environment temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, the liquid outlet temperature average value between the first liquid cooling cabinet and the second liquid cooling cabinet and the liquid inlet and outlet temperature difference average value are periodically detected, and the operation state of a liquid pump in the main pipeline is controlled; the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference value between the liquid level of the first liquid cooling cabinet and the liquid level of the second liquid cooling cabinet are detected, and the operation state of a communicating vessel in the communicating pipeline and the operation state of a liquid inlet valve in each liquid inlet pipeline are controlled. The control efficiency is improved, and the cooling efficiency of the whole liquid cooling unit is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of immersion liquid cooling, and in particular to a control method for a liquid cooling unit, an electronic device and a computer-readable medium. Background Art

[0002] The computing power of computing equipment is constantly improving with the advancement of technology, and the performance requirements for computing equipment are also getting higher and higher, which in turn leads to the gradual increase in the heat generation and heat flux density of electronic components. Then the computing equipment loss caused by the heat generation of electronic components will inevitably increase exponentially. Traditional air cooling technology can no longer meet the heat dissipation needs of computing equipment. Immersion liquid cooling technology has better heat dissipation capabilities and less energy consumption, which can effectively improve the computing efficiency and service life of computing equipment.

[0003] The computing power requirements of various industries are different. Some scenarios require multiple liquid cooling units to run simultaneously. Liquid level imbalance may occur between multiple liquid cooling units. The current solution is to use a larger diameter supply and return main pipe to reduce the static pressure of the supply and return pipelines and adjust the valve based on a single-point threshold to balance the static pressure of the pipeline. However, this solution is costly and the effect is not ideal. Summary of the invention

[0004] The present application aims to solve one of the technical problems in the related art to a certain extent. To this end, the present application provides a control method of a liquid cooling unit, an electronic device and a computer readable medium.

[0005] As a first aspect of the present application, a control method for a liquid cooling unit is provided, wherein the liquid cooling unit comprises a first liquid cooling cabinet, a second liquid cooling cabinet, a liquid supply ring network pipeline, a liquid return ring network pipeline, a main pipeline connecting the liquid supply ring network pipeline and the liquid return ring network pipeline, a liquid inlet pipeline connecting the liquid cooling cabinet and the liquid supply ring network pipeline, and a liquid outlet pipeline connecting the liquid cooling cabinet and the liquid return ring network pipeline, wherein the liquid cooling unit further comprises a connecting pipeline connecting the first liquid cooling cabinet and the second liquid cooling cabinet, and the liquid inlet pipeline and the liquid outlet pipeline corresponding to the first liquid cooling cabinet are matched in length with the liquid inlet pipeline and the liquid outlet pipeline corresponding to the second liquid cooling cabinet, and the method is executed periodically, and the method comprises:

[0006] Detecting the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, and the average value of the liquid outlet temperature and the average value of the inlet and outlet temperature difference between the first liquid cooling cabinet and the second liquid cooling cabinet;

[0007] Controlling the operating state of the liquid pump in the main line according to the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, the average value of the liquid outlet temperature and the average value of the inlet and outlet liquid temperature difference;

[0008] Detecting a liquid level of the first liquid-cooling cabinet, a liquid level of the second liquid-cooling cabinet, and a liquid level difference between the liquid level of the first liquid-cooling cabinet and the liquid level of the second liquid-cooling cabinet;

[0009] According to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference, the operating state of the communicating vessel in the communicating pipeline and the operating state of the liquid inlet valve in each of the liquid inlet pipelines are controlled.

[0010] Optionally, controlling the operating state of the communicating vessel in the communicating pipeline and the operating state of the liquid inlet valve in each of the liquid inlet pipelines according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet, and the liquid level difference includes:

[0011] When the liquid level difference is greater than or equal to a first preset liquid level threshold and less than or equal to a second preset liquid level threshold, determining a liquid level measurement error and a liquid level balance coefficient according to the liquid level of the first liquid cooling cabinet and the liquid level of the second liquid cooling cabinet;

[0012] When the liquid level balance coefficient is less than a preset balance threshold, controlling the communication range of the communicating vessel to a preset range;

[0013] When the liquid level balance coefficient is greater than or equal to a preset balance threshold, the communication amplitude of the communicating vessel is controlled to be a preset amplitude, and a target valve step control amount is determined according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference;

[0014] According to the target valve step control amount, the valve step of the liquid inlet valve in each of the liquid inlet pipelines is controlled.

[0015] Optionally, the liquid level measurement error and the liquid level balance coefficient are determined by the following formula (1):

[0016]

[0017] The target valve step control amount is determined by the following formula (2):

[0018] F1=Round(kp*(ΔL C 1-ΔL C 2)+ki*ΔL+kd*(ΔL C 1-2ΔL C 2+ΔL C 3))*θ*100% (2);

[0019] In formulas (1) and (2), ΔL C 1 represents the liquid level measurement error, f ′represents the liquid level balance coefficient, L1 represents the liquid level of the first liquid cooling cabinet, L2 represents the liquid level of the second liquid cooling cabinet, F1 represents the target valve step control amount, Round(…) represents the rounding function, kp is the proportional coefficient and its value is 0.12, ΔL C 2 represents the level measurement error in the previous cycle, ki is the integral coefficient and its value is 0.15, ΔL represents the level difference, kd is the differential coefficient and its value is 0.2, ΔL C 3 represents the liquid level measurement error in the previous cycle, θ is the correction coefficient and its value is 0.1.

[0020] Optionally, in the step of controlling the operating state of the communicating vessel in the communicating pipeline and the operating state of the liquid inlet valve in each of the liquid inlet pipelines according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference, the step further includes:

[0021] When the liquid level difference is greater than a second preset liquid level threshold, controlling the valve step of the regulating valve in the liquid inlet pipeline corresponding to the first liquid cooling cabinet to be reduced by a first preset number of steps;

[0022] When the liquid level difference is less than a first preset liquid level threshold, the valve step of the regulating valve in the liquid inlet pipeline corresponding to the second liquid cooling cabinet is controlled to be reduced by a first preset step number.

[0023] Optionally, the step of controlling the operating state of the liquid pump in the main line according to the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, the average value of the liquid outlet temperature and the average value of the inlet and outlet liquid temperature difference includes:

[0024] When the average value of the outlet liquid temperature is less than the preset outlet liquid temperature threshold, and the average value of the inlet and outlet liquid temperature difference is less than the preset temperature difference threshold, controlling the operating frequency of the liquid pump to remain unchanged;

[0025] In the step of controlling the operating state of the communicating vessel in the communicating pipeline and the operating state of the liquid inlet valve in each of the liquid inlet pipelines according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference, the step further includes:

[0026] When the liquid level difference is greater than a second preset liquid level threshold, controlling the valve step of the regulating valve in the liquid inlet pipeline corresponding to the second liquid cooling cabinet to increase by a second preset number of steps;

[0027] When the liquid level difference is less than a first preset liquid level threshold, the valve step of the regulating valve in the liquid inlet pipeline corresponding to the first liquid cooling cabinet is controlled to increase by a second preset step number.

[0028] Optionally, controlling the operating state of the liquid pump in the main line according to the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, the average value of the liquid outlet temperature, and the average value of the inlet and outlet liquid temperature difference includes:

[0029] When the average value of the liquid outlet temperature is greater than or equal to the preset liquid outlet temperature threshold and the average value of the inlet and outlet temperature difference is less than the preset temperature difference threshold, the target frequency control amount is determined according to the preset temperature difference threshold, the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, and a preset first algorithm;

[0030] When the average value of the liquid outlet temperature is greater than or equal to the preset liquid outlet temperature threshold and the average value of the inlet and outlet temperature difference is greater than or equal to the preset temperature difference threshold, the target frequency control amount is determined according to the preset temperature difference threshold, the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, and a preset second algorithm;

[0031] The operating frequency of the liquid pump is controlled according to the target frequency control amount.

[0032] Optionally, the preset first algorithm includes the following formula (3):

[0033]

[0034] The preset second algorithm includes the following formula (4):

[0035]

[0036] In formulas (3) and (4), F2 represents the target frequency control amount, Round(…) represents the rounding function, ΔT represents the preset temperature difference threshold, the value range of A is (2°C, 6°C), Th represents the ambient temperature, Tout1 represents the outlet temperature of the first liquid cooling cabinet, Tout2 represents the outlet temperature of the second liquid cooling cabinet, T set Indicates preset calibration amount.

[0037] Optionally, in the step of controlling the operating state of the liquid pump in the main line according to the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, the average value of the liquid outlet temperature and the average value of the inlet and outlet liquid temperature difference, the step further includes:

[0038] When the average value of the liquid outlet temperature is less than the preset liquid outlet temperature threshold and the average value of the inlet and outlet temperature difference is greater than or equal to the preset temperature difference threshold, the valve step of the regulating valve in the liquid pump is controlled to its maximum value.

[0039] As a second aspect of the present application, an electronic device is provided, wherein the electronic device includes:

[0040] one or more processors;

[0041] A memory having one or more computer programs stored thereon, when the one or more computer programs are executed by the one or more processors, the one or more processors implement the control method of the liquid cooling unit provided in the first aspect of the present application.

[0042] As a third aspect of the present application, a computer-readable medium is provided, on which a computer program is stored, wherein when the computer program is executed by a processor, the control method of the liquid cooling unit provided in the first aspect of the present application is implemented.

[0043] In the control method of the liquid cooling unit provided in the embodiment of the present application, on the basis of the liquid cooling unit including the first liquid cooling cabinet, the second liquid cooling cabinet, the liquid supply ring network pipeline, the liquid return ring network pipeline, the main pipeline connecting the liquid supply ring network pipeline and the liquid return ring network pipeline, the liquid inlet pipeline connecting the liquid cooling cabinet and the liquid supply ring network pipeline, and the liquid outlet pipeline connecting the liquid cooling cabinet and the liquid return ring network pipeline, a connecting pipeline connecting the first liquid cooling cabinet and the second liquid cooling cabinet is additionally provided, and the liquid inlet pipeline and the liquid outlet pipeline corresponding to the first liquid cooling cabinet are matched in length with the liquid inlet pipeline and the liquid outlet pipeline corresponding to the second liquid cooling cabinet, and the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, and the liquid outlet temperature of the second liquid cooling cabinet are periodically detected. The average value of the outlet liquid temperature and the average value of the inlet and outlet liquid temperature difference between the first liquid cooling cabinet and the second liquid cooling cabinet, according to the ambient temperature, the outlet liquid temperature of the first liquid cooling cabinet, the outlet liquid temperature of the second liquid cooling cabinet, the average value of the outlet liquid temperature and the average value of the inlet and outlet liquid temperature difference, control the operating state of the liquid pump in the main line, detect the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet, and the liquid level difference between the liquid level of the first liquid cooling cabinet and the liquid level of the second liquid cooling cabinet, according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference, control the operating state of the connecting vessel in the connecting pipeline and the operating state of the liquid inlet valve in each of the liquid inlet pipelines. This method can safely and accurately maintain the load balance and liquid level balance of the entire liquid cooling unit while saving the layout cost, improve the control efficiency, and thus also improve the cooling efficiency of the entire liquid cooling unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The present application is further described below in conjunction with the accompanying drawings:

[0045] Figure 1 It is a flow chart of an implementation method of the control method of the liquid cooling unit provided in the embodiment of the present application;

[0046] Figure 2 It is a schematic diagram of an implementation of a liquid cooling unit provided in an embodiment of the present application;

[0047] Figure 3 is a flow chart of another implementation of the control method of the liquid cooling unit provided in the embodiment of the present application;

[0048] Figure 4 is a flow chart of another implementation of the control method of the liquid cooling unit provided in the embodiment of the present application;

[0049] Figure 5 is a flow chart of another implementation of the control method of the liquid cooling unit provided in the embodiment of the present application;

[0050] Figure 6 is a flow chart of another implementation of the control method of the liquid cooling unit provided in the embodiment of the present application;

[0051] Figure 7 It is a module diagram of an implementation of an electronic device provided in an embodiment of the present application;

[0052] Figure 8 It is a schematic diagram of a computer-readable medium provided in an embodiment of the present application.

[0053] Description of Reference Numerals

[0054] 101: Processor 102: Memory

[0055] 103: I / O interface 104: bus DETAILED DESCRIPTION

[0056] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments based on the embodiments are intended to be used to explain the present application and cannot be understood as limiting the present application.

[0057] References to "one embodiment" or "an example" or "an example" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment disclosed in the present application. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0058] Some scenarios require multiple liquid cooling units to run simultaneously, and there may be a liquid level imbalance between the multiple liquid cooling units. The current solution is costly and the effect is not ideal. To this end, the inventor of this application proposes that while the liquid cooling unit adopts a one-to-two design and a ring network design, a connecting vessel design can be added between the two liquid cooling cabinets, and the load of the entire liquid cooling unit and the liquid level balance between the two liquid cooling cabinets can be analyzed with the help of the ambient temperature, the inlet temperature, the outlet temperature and the liquid level of each liquid cooling cabinet, and then the PID (proportional-integral-differential) controller can be used to safely and accurately adjust the operating status of the liquid pump, the connecting vessel and the liquid inlet valve.

[0059] As a first aspect of an embodiment of the present application, a control method for a liquid cooling unit is provided, wherein the liquid cooling unit comprises a first liquid cooling cabinet, a second liquid cooling cabinet, a liquid supply ring network pipeline, a liquid return ring network pipeline, a main pipeline connecting the liquid supply ring network pipeline and the liquid return ring network pipeline, a liquid inlet pipeline connecting the liquid cooling cabinet and the liquid supply ring network pipeline, and a liquid outlet pipeline connecting the liquid cooling cabinet and the liquid return ring network pipeline, wherein the liquid cooling unit also comprises a connecting pipeline connecting the first liquid cooling cabinet and the second liquid cooling cabinet, the liquid inlet pipeline and the liquid outlet pipeline corresponding to the first liquid cooling cabinet are matched in length with the liquid inlet pipeline and the liquid outlet pipeline corresponding to the second liquid cooling cabinet, and the method is executed periodically, such as Figure 1 As shown, the method may include the following steps:

[0060] In step S110, the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, and the average value of the liquid outlet temperature and the average value of the inlet and outlet temperature difference between the first liquid cooling cabinet and the second liquid cooling cabinet are detected;

[0061] In step S120, the operating state of the liquid pump in the main line is controlled according to the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, the average value of the liquid outlet temperature, and the average value of the inlet and outlet liquid temperature difference;

[0062] In step S130, a liquid level of the first liquid cooling cabinet, a liquid level of the second liquid cooling cabinet, and a liquid level difference between the liquid level of the first liquid cooling cabinet and the liquid level of the second liquid cooling cabinet are detected;

[0063] In step S140, the operating state of the communicating vessel in the communicating pipeline and the operating state of the liquid inlet valves in each of the liquid inlet pipelines are controlled according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference.

[0064] like Figure 2As shown, it is a schematic diagram of an implementation of the liquid cooling unit provided in the embodiment of the present application. The liquid cooling cabinet in the liquid cooling unit can adopt a standard 42U design, and the length, width and height can be designed as M = 1800mm, N = 600mm, and L = 1400mm respectively. The pipe diameter of the main pipeline can be designed as Wherein, Qv represents the volume flow rate, α represents the flow coefficient, ε represents the expansion coefficient, ΔP represents the pressure difference, and ρ represents the coolant density. The first liquid-cooled cabinet and the second liquid-cooled cabinet are both connected to the liquid supply ring network pipeline through the liquid inlet pipeline, and are both connected to the liquid return ring network pipeline through the liquid outlet pipeline. The lengths of the liquid inlet pipeline and the liquid outlet pipeline corresponding to the first liquid-cooled cabinet match those of the liquid inlet pipeline and the liquid outlet pipeline corresponding to the second liquid-cooled cabinet, that is, the lengths of the two liquid inlet pipelines match and the lengths of the two liquid outlet pipelines match. In this way, the two liquid-cooled cabinets each form a complete supply and return link with the ring network pipeline (including the liquid supply ring network pipeline, the liquid return ring network pipeline and the main pipeline), and the total lengths of the two supply and return links are equal.

[0065] In the embodiments of the present application, there is no specific limitation on the pipe diameter design of different types of pipelines. Generally speaking, when each pipe diameter is set to one of DN32, DN40, DN50, and DN65, it can better balance cost saving and efficiency improvement.

[0066] In the embodiment of the present application, there is no special limitation on how to execute step S110. For example, the ambient temperature and the liquid inlet temperature and liquid outlet temperature of each of the two liquid-cooling cabinets can be collected first, and the average liquid outlet temperature between the two liquid-cooling cabinets can be calculated based on the liquid outlet temperature of each of the two liquid-cooling cabinets. The inlet and outlet liquid temperature difference of each liquid-cooling cabinet is calculated based on the liquid inlet temperature and liquid outlet temperature of the liquid-cooling cabinet, and then the average of the inlet and outlet liquid temperature differences of the two liquid-cooling cabinets is calculated to obtain the average inlet and outlet liquid temperature difference.

[0067] In the embodiment of the present application, there is no particular limitation on how to perform step S130. For example, the liquid levels of the two liquid cooling cabinets may be collected first, and then the liquid level difference may be calculated.

[0068] In the embodiment of the present application, it can be understood that after step S140 is executed, in response to the arrival of the next cycle, the execution will jump to step S110 to continue to execute the control method of the liquid cooling unit provided in the embodiment of the present application in the next cycle.

[0069] The inventor of the present application proposes that the load condition of the entire liquid cooling unit will affect the static pressure balance of the entire piping system, and will inevitably affect the liquid level balance between the two liquid cooling cabinets. The ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, the average liquid outlet temperature and the average inlet and outlet liquid temperature difference can comprehensively and objectively reflect the load condition of the entire liquid cooling unit. Based on this, the operating state of the liquid pump in the main pipeline can be controlled to safely and accurately maintain the load balance of the entire liquid cooling unit.

[0070] The inventor of the present application proposes that, at present, when there are two liquid cooling cabinets in the liquid cooling unit, the reason why the liquid level between the two liquid cooling cabinets is unbalanced is that the total lengths of the two supply and return links formed by the two liquid cooling cabinets and the ring network pipeline (including the liquid supply ring network pipeline, the liquid return ring network pipeline and the main pipeline) are not equal, that is, there is a proximal liquid cooling cabinet and a distal liquid cooling cabinet. Due to the uneven resistance along the pipeline and the local resistance, the resistance loss of the return liquid pipeline is different between the proximal liquid cooling cabinet and the distal liquid cooling cabinet. Since the liquid outlet flow rate of the proximal liquid cooling cabinet is greater and the static pressure of the corresponding area is smaller, the static pressure is unbalanced, and the liquid level is finally unbalanced. In this regard, by setting the liquid inlet pipeline and the liquid outlet pipeline corresponding to the first liquid cooling cabinet to match the length between the liquid inlet pipeline and the liquid outlet pipeline corresponding to the second liquid cooling cabinet, the proximal and distal differences between the two liquid cooling cabinets are eliminated, and the static pressure balance of the entire pipeline system can be achieved, which is conducive to maintaining the liquid level balance between the two liquid cooling cabinets.

[0071] The inventor of the present application also proposed that the liquid level and the liquid level difference of the two liquid-cooling cabinets can comprehensively and objectively reflect the liquid level balance between the two liquid-cooling cabinets, that is, the difference in liquid levels and the dynamic development trend. Based on this, the operating state of the communicating device in the connecting pipeline and the operating state of the liquid inlet valve in each liquid inlet pipeline can be controlled, and the liquid level balance between the two liquid-cooling cabinets can also be safely and accurately maintained.

[0072] In the control method of the liquid cooling unit provided in the embodiment of the present application, on the basis of the liquid cooling unit including the first liquid cooling cabinet, the second liquid cooling cabinet, the liquid supply ring network pipeline, the liquid return ring network pipeline, the main pipeline connecting the liquid supply ring network pipeline and the liquid return ring network pipeline, the liquid inlet pipeline connecting the liquid cooling cabinet and the liquid supply ring network pipeline, and the liquid outlet pipeline connecting the liquid cooling cabinet and the liquid return ring network pipeline, a connecting pipeline connecting the first liquid cooling cabinet and the second liquid cooling cabinet is additionally provided, and the liquid inlet pipeline and the liquid outlet pipeline corresponding to the first liquid cooling cabinet are matched in length with the liquid inlet pipeline and the liquid outlet pipeline corresponding to the second liquid cooling cabinet, and the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, and the liquid outlet temperature of the second liquid cooling cabinet are periodically detected. The average value of the outlet liquid temperature and the average value of the inlet and outlet liquid temperature difference between the first liquid cooling cabinet and the second liquid cooling cabinet, according to the ambient temperature, the outlet liquid temperature of the first liquid cooling cabinet, the outlet liquid temperature of the second liquid cooling cabinet, the average value of the outlet liquid temperature and the average value of the inlet and outlet liquid temperature difference, control the operating state of the liquid pump in the main line, detect the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet, and the liquid level difference between the liquid level of the first liquid cooling cabinet and the liquid level of the second liquid cooling cabinet, according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference, control the operating state of the connecting vessel in the connecting pipeline and the operating state of the liquid inlet valve in each of the liquid inlet pipelines. This method can safely and accurately maintain the load balance and liquid level balance of the entire liquid cooling unit while saving the layout cost, improve the control efficiency, and thus also improve the cooling efficiency of the entire liquid cooling unit.

[0073] As shown in Table 1 below, the inventors of the present application also analyzed the relationship between the diameter of the connecting pipeline and the total flow in each pipeline and the liquid level difference between the two liquid cooling cabinets. It can be seen that after using the connecting pipeline, the liquid level difference between the two liquid cooling cabinets is indeed effectively reduced, and after increasing the diameter of the connecting pipeline, the liquid level difference between the two liquid cooling cabinets is indeed effectively reduced. However, the liquid level difference between the two liquid cooling cabinets is not infinitely reduced with the increase of the diameter of the connecting pipeline. When the total flow of the liquid cooling unit is small, such as 5m 3 / h, it is actually sufficient to use a connecting pipeline with a diameter of DN32 or DN40. Therefore, as a preferred implementation method, the diameter of the main pipeline can be set to DN40, the diameter of the liquid inlet pipeline and the liquid outlet pipeline can be set to DN32, and the diameter of the liquid supply ring network pipeline, the liquid return ring network pipeline and the connecting pipeline can be set to DN40.

[0074] Table 1

[0075]

[0076] In some embodiments, the operating state of the communicating device in the communicating pipeline and the operating state of the liquid inlet valve in each of the liquid inlet pipelines (i.e., the step S140 involved) are controlled according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet, and the liquid level difference, such as Figure 3 As shown, the following steps may be included:

[0077] In step S210, when the liquid level difference is greater than or equal to the first preset liquid level threshold and less than or equal to the second preset liquid level threshold, a liquid level measurement error and a liquid level balance coefficient are determined according to the liquid level of the first liquid cooling cabinet and the liquid level of the second liquid cooling cabinet;

[0078] In step S220, when the liquid level balance coefficient is less than a preset balance threshold, the communication range of the communicating vessel is controlled to be a preset range;

[0079] In step S230, when the liquid level balance coefficient is greater than or equal to a preset balance threshold, the communication amplitude of the communicating vessel is controlled to be a preset amplitude, and a target valve step control amount is determined according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet, and the liquid level difference;

[0080] In step S240, the valve step of the liquid inlet valve in each of the liquid inlet pipelines is controlled according to the target valve step control amount.

[0081] The liquid level of the first liquid cooling cabinet and the liquid level of the second liquid cooling cabinet are represented as L1 and L2 respectively, the liquid level difference is represented as ΔL=L1-L2, the first preset liquid level threshold and the second preset liquid level threshold are represented as -X and x respectively, and it can be understood that x is a positive number. In the embodiment of the present application, there is no special limitation on the value of x. As a preferred implementation method, the value range of x can be (0,2cm).

[0082] When -x≤ΔL=L1-L2≤X, it means that the difference in liquid level between the two liquid cooling cabinets is small and still within the safe range. At this time, continue to execute steps S210-S240, further analyze the difference in liquid level and dynamic development trend of the two liquid cooling cabinets, and control the connection range of the communicating vessel and the valve step of the liquid inlet valve in each liquid inlet pipeline according to the difference in liquid level and dynamic development trend between the two liquid cooling cabinets.

[0083] The liquid level balance coefficient is expressed as f ′ , the preset balance threshold is represented as K, when f ′When <K, it indicates that the liquid levels of the two liquid cooling cabinets are developing towards a dynamic balance. At this time, the communication amplitude of the communicating vessel is controlled to a preset amplitude to maintain a dynamic balance between the liquid levels of the two liquid cooling cabinets. In the embodiment of the present application, the preset amplitude is not specifically limited. For example, the preset amplitude can be 45%, 50%, 55%, etc.

[0084] When f ′ When ≥K, it indicates that the liquid levels of the two liquid-cooling cabinets are developing towards a discrete phase. At this time, it is necessary not only to control the connectivity amplitude of the communicating vessel to a preset amplitude, but also to synchronously control the valve steps of the liquid inlet valves in the liquid inlet pipelines of the two liquid-cooling cabinets to drive the liquid levels of the two liquid-cooling cabinets towards a dynamic balance.

[0085] In the embodiment of the present application, there is no special limitation on how to determine the target valve step control amount according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet, and the liquid level difference. For example, the target valve step control amount can be determined by the following formulas (a), (b), and (c):

[0087]

[0088] Accordingly, in some embodiments, the liquid level measurement error and the liquid level balance coefficient are determined by the following formula (1):

[0089]

[0090] The target valve step control amount is determined by the following formula (2):

[0091] F1=Round(kp*(ΔL C 1-ΔL C 2)+ki*ΔL+kd*(ΔL C 1-2ΔL C 2+ΔL C 3))*θ*100% (2);

[0092] In formulas (1) and (2), ΔL C 1 represents the liquid level measurement error, f′ represents the liquid level balance coefficient, L1 represents the liquid level of the first liquid cooling cabinet, L2 represents the liquid level of the second liquid cooling cabinet, F1 represents the target valve step control amount, Round(…) represents the rounding function, kp is the proportional coefficient and its value is 0.12, ΔL C 2 represents the level measurement error in the previous cycle, ki is the integral coefficient and its value is 0.15, ΔL represents the level difference, kd is the differential coefficient and its value is 0.2, ΔL C 3 represents the liquid level measurement error in the previous cycle, θ is the correction coefficient and its value is 0.1.

[0093] Among them, it can be understood that the determined target valve step control amount may be a positive number or a negative number. When it is a positive number, the valve step of the liquid inlet valve in each liquid inlet pipeline is controlled to increase, and when it is a negative number, the valve step of the liquid inlet valve in each liquid inlet pipeline is controlled to decrease. The number of increased or decreased steps is the absolute value of the target valve step control amount.

[0094] The above involves the case where the liquid level difference is greater than or equal to the first preset liquid level threshold and less than or equal to the second preset liquid level threshold, that is, -X≤ΔL=L1-L2≤X. For the two extreme cases of ΔL>X and ΔL<-X, it means that the difference in liquid level between the two liquid cooling cabinets is large. At this time, it is necessary to consider how to drive the liquid levels of the two liquid cooling cabinets to reach dynamic balance as quickly as possible. Accordingly, in some embodiments, in the step of controlling the operating state of the connecting vessel in the connecting pipeline and the operating state of the liquid inlet valve in each of the liquid inlet pipelines according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference (that is, step S140 involved), as Figure 4 As shown, the following steps may be included:

[0095] In step S250, when the liquid level difference is greater than a second preset liquid level threshold, the valve step of the regulating valve in the liquid inlet pipeline corresponding to the first liquid cooling cabinet is controlled to be reduced by a first preset step number;

[0096] In step S260, when the liquid level difference is less than the first preset liquid level threshold, the valve step of the regulating valve in the liquid inlet pipeline corresponding to the second liquid cooling cabinet is controlled to be reduced by a first preset step number.

[0097] ΔL=L1-L2, when ΔL>X, it means that the liquid level of the first liquid cooling cabinet is significantly higher than that of the second liquid cooling cabinet. At this time, the valve step of the regulating valve in the liquid inlet pipeline corresponding to the first liquid cooling cabinet needs to be reduced to slow down the liquid inlet speed of the first liquid cooling cabinet. When ΔL<-X, it means that the liquid level of the second liquid cooling cabinet is significantly higher than that of the first liquid cooling cabinet. At this time, the valve step of the regulating valve in the liquid inlet pipeline corresponding to the second liquid cooling cabinet needs to be reduced to slow down the liquid inlet speed of the second liquid cooling cabinet.

[0098] The inventor of the present application further proposed that for the two extreme cases of ΔL>X and ΔL<-X, it can also be determined based on the previous analysis results of the load conditions of the entire liquid cooling unit, and whether to increase the valve step of the regulating valve in the liquid inlet pipeline corresponding to the liquid cooling cabinet with a lower liquid level, so as to speed up the liquid inlet speed of the liquid cooling cabinet with a lower liquid level, so that the liquid levels of the two liquid cooling cabinets tend to dynamic balance more quickly.

[0099] Accordingly, in some embodiments, the step of controlling the operating state of the liquid pump in the main line according to the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, the average value of the liquid outlet temperature and the average value of the inlet and outlet liquid temperature difference (i.e., the step involved in step S120) may include the following steps: when the average value of the liquid outlet temperature is less than a preset liquid outlet temperature threshold and the average value of the inlet and outlet liquid temperature difference is less than a preset temperature difference threshold, controlling the operating frequency of the liquid pump to remain unchanged;

[0100] In the step of controlling the operating state of the communicating vessel in the communicating pipeline and the operating state of the liquid inlet valve in each of the liquid inlet pipelines according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference (i.e., the step S140 involved), the following steps may be included:

[0101] When the liquid level difference is greater than a second preset liquid level threshold, controlling the valve step of the regulating valve in the liquid inlet pipeline corresponding to the second liquid cooling cabinet to increase by a second preset number of steps;

[0102] When the liquid level difference is less than a first preset liquid level threshold, the valve step of the regulating valve in the liquid inlet pipeline corresponding to the first liquid cooling cabinet is controlled to increase by a second preset step number.

[0103] The outlet temperature of the first liquid cooling cabinet, the outlet temperature of the second liquid cooling cabinet, the average value of the outlet temperature and the average value of the inlet and outlet temperature difference are respectively expressed as: Tout1, Tout2, The preset liquid outlet temperature threshold and the preset temperature difference threshold are represented as T x , ΔT, when and When , it indicates that the load of the entire liquid cooling unit is normal, and the operating frequency of the liquid pump can be controlled to remain unchanged. As described above, in the control method of the liquid cooling unit provided in the embodiment of the present application, L1, L2, ΔL=L1-L2 will be further detected. Then, when it is determined that ΔL>X or ΔL<-X, the valve step of the regulating valve in the liquid inlet pipeline corresponding to the liquid cooling cabinet with a lower liquid level can be increased to speed up the liquid inlet speed of the liquid cooling cabinet with a lower liquid level, so that the liquid levels of the two liquid cooling cabinets tend to dynamic balance more quickly.

[0104] That is, when it is determined and When , the operating frequency of the control liquid pump remains unchanged, and then L1, L2, ΔL=L1-L2 are detected. If it is determined that ΔL>X, the valve step of the regulating valve in the liquid inlet pipeline corresponding to the first liquid cooling cabinet is reduced by the first preset step number to slow down the liquid inlet speed of the first liquid cooling cabinet, and the valve step of the regulating valve in the liquid inlet pipeline corresponding to the second liquid cooling cabinet is increased by the second preset step number to speed up the liquid inlet speed of the second liquid cooling cabinet, so that the liquid levels of the two liquid cooling cabinets tend to dynamic balance more quickly. When ΔL<-X, the valve step of the regulating valve in the liquid inlet pipeline corresponding to the second liquid cooling cabinet is reduced by the first preset step number to slow down the liquid inlet speed of the second liquid cooling cabinet, and the valve step of the regulating valve in the liquid inlet pipeline corresponding to the first liquid cooling cabinet is increased by the second preset step number to speed up the liquid inlet speed of the first liquid cooling cabinet, so that the liquid levels of the two liquid cooling cabinets tend to dynamic balance more quickly.

[0105] It should be noted that in the embodiment of the present application, if it is determined that and When analyzing the difference in the liquid levels of the two liquid cooling cabinets and the dynamic development trend, it is determined that ΔL>X or ΔL<-X. Then, there is no specific limitation on the first preset number of steps and the second preset number of steps, as long as the first preset number of steps is at least not less than the second preset number of steps. For example, the first preset number of steps and the second preset number of steps can be set to 100 steps and 50 steps respectively.

[0106] The above involves that the average value of the outlet temperature is less than the preset outlet temperature threshold and the average value of the inlet and outlet temperature difference is less than the preset temperature difference threshold, that is, and For the opposite situation, it means that the load condition of the entire liquid cooling unit is not good, and the operating state of the liquid pump needs to be controlled to drive the entire liquid cooling unit to achieve load balance.

[0107] Accordingly, in some embodiments, the operating state of the liquid pump in the main line (i.e., the step S120 involved) is controlled according to the ambient temperature, the outlet liquid temperature of the first liquid cooling cabinet, the outlet liquid temperature of the second liquid cooling cabinet, the average value of the outlet liquid temperature, and the average value of the inlet and outlet liquid temperature difference, such as Figure 5 As shown, the following steps may be included:

[0108] In step S310, when the average value of the liquid outlet temperature is greater than or equal to the preset liquid outlet temperature threshold and the average value of the inlet and outlet temperature difference is less than the preset temperature difference threshold, a target frequency control amount is determined according to the preset temperature difference threshold, the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, and a preset first algorithm;

[0109] In step S320, when the average value of the liquid outlet temperature is greater than or equal to the preset liquid outlet temperature threshold and the average value of the inlet and outlet temperature difference is greater than or equal to the preset temperature difference threshold, a target frequency control amount is determined according to the preset temperature difference threshold, the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, and a preset second algorithm;

[0110] In step S330, the operating frequency of the liquid pump is controlled according to the target frequency control amount.

[0111] It can be understood that step S310 involves and In the case of and In the case of and When and When the load of the entire liquid cooling unit is extremely overloaded, it means that the load of the entire liquid cooling unit is extremely overloaded. In both cases, the target frequency control amount needs to be determined, and then the operating frequency of the liquid pump is controlled according to the target frequency control amount. The difference is that the target frequency control amount obtained by using the preset second algorithm is greater than the target frequency control amount obtained by using the preset first algorithm.

[0112] Accordingly, in some embodiments, the preset first algorithm includes the following formula (3):

[0113]

[0114] The preset second algorithm includes the following formula (4):

[0115]

[0116] In formulas (3) and (4), F2 represents the target frequency control amount, Round(…) represents the rounding function, ΔT represents the preset temperature difference threshold, the value range of A is (2°C, 6°C), Th represents the ambient temperature, Tout1 represents the outlet temperature of the first liquid cooling cabinet, Tout2 represents the outlet temperature of the second liquid cooling cabinet, T set Indicates preset calibration amount.

[0117] In some embodiments, in the step of controlling the operating state of the liquid pump in the main line according to the ambient temperature, the outlet liquid temperature of the first liquid cooling cabinet, the outlet liquid temperature of the second liquid cooling cabinet, the average value of the outlet liquid temperature, and the average value of the inlet and outlet liquid temperature difference (i.e., involved in step S120), as Figure 6 As shown, the following steps may also be included:

[0118] In step S410, when the average value of the liquid outlet temperature is less than the preset liquid outlet temperature threshold and the average value of the inlet and outlet temperature difference is greater than or equal to the preset temperature difference threshold, the valve step of the regulating valve in the liquid pump is controlled to its maximum value.

[0119] It can be understood that step S410 involves and When and When , it indicates that there is an abnormality in the load of the entire liquid cooling unit. In this case, the valve step of the regulating valve in the liquid pump needs to be controlled to its maximum value, that is, the regulating valve in the liquid pump needs to be opened to 100% to drive the entire liquid cooling unit to achieve load balance.

[0120] As described above, in the control method of the liquid cooling unit provided in the embodiment of the present application, the load condition of the entire liquid cooling unit is first analyzed, which is divided into the following four conditions: 1. and 2. and 3. and 4. and Further analysis of the difference in the liquid level and the dynamic development trend of the two liquid cooling cabinets is divided into the following three situations: a, -X≤ΔL=L1-L2≤X; b, ΔL>X; c, ΔL<-X. For the four situations 1, 2, 3, and 4, if situation a occurs in the subsequent analysis of the difference in the liquid level and the dynamic development trend of the two liquid cooling cabinets, it is necessary to control the connection amplitude of the communicating vessel to a preset amplitude (involved in steps S210-S240), and the preset amplitudes are different at this time. If situations b and c occur in the subsequent analysis of the difference in the liquid level and the dynamic development trend of the two liquid cooling cabinets, it is necessary to reduce the valve step of the regulating valve in the liquid inlet pipeline corresponding to the first liquid cooling cabinet or the second liquid cooling cabinet by a first preset number of steps (involved in steps S250-S260), and the preset first number of steps is different at this time.

[0121] Since the load level of the entire liquid cooling unit is increasing in the four cases 1, 2, 3, and 4, the preset amplitude corresponding to case 1, the preset amplitude corresponding to case 2, the preset amplitude corresponding to case 3, and the preset amplitude corresponding to case 4 are also increasing in general, and the preset first step number corresponding to case 2, the preset first step number corresponding to case 3, and the preset first step number corresponding to case 4 are also increasing in general. It can be understood that for case 1, since the valve step of the regulating valve in the liquid inlet pipeline corresponding to the liquid cooling cabinet with a lower liquid level is also increased, the corresponding preset first step number can be greater than the preset first step number corresponding to case 2, the preset first step number corresponding to case 3, and the preset first step number corresponding to case 4.

[0122] For example, the preset amplitude corresponding to situation 1, the preset amplitude corresponding to situation 2, the preset amplitude corresponding to situation 3, and the preset amplitude corresponding to situation 4 can be 50%, 70%, 90%, and 100%, respectively; the preset first number of steps corresponding to situation 1, the preset first number of steps corresponding to situation 2, the preset first number of steps corresponding to situation 3, and the preset first number of steps corresponding to situation 4 can be 100 steps, 50 steps, 100 steps, and 200 steps, respectively.

[0123] As a second aspect of the embodiments of the present application, an electronic device is provided, wherein: Figure 7 As shown, the electronic device includes:

[0124] One or more processors 101;

[0125] The memory 102 stores one or more computer programs. When the one or more computer programs are executed by the one or more processors 101, the one or more processors 101 implement the control method of the liquid cooling unit provided in the first aspect of the embodiment of the present application.

[0126] The electronic device may further include one or more I / O interfaces 103 connected between the processor 101 and the memory 102 and configured to implement information interaction between the processor 101 and the memory 102 .

[0127] Among them, the processor 101 is a device with data processing capabilities, including but not limited to a central processing unit (CPU), etc.; the memory 102 is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory (FLASH); the I / O interface (read-write interface) is connected between the processor and the memory, and can realize information exchange between the processor and the memory, including but not limited to a data bus (Bus), etc.

[0128] In some embodiments, the processor 101 , the memory 102 , and the I / O interface 103 are connected to each other via a bus 104 , and further connected to other components of the computing device.

[0129] As a third aspect of the embodiment of the present application, Figure 8 As shown, a computer-readable medium is provided, on which a computer program is stored, wherein when the computer program is executed by a processor, the control method of the liquid cooling unit provided in the first aspect of the embodiment of the present application is implemented.

[0130] It can be understood by a person of ordinary skill in the art that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program. Accordingly, the computer program can be stored in a non-volatile computer-readable storage medium, and the computer program can implement the method of any of the above-mentioned embodiments when executed. Among them, any reference to memory, storage, database or other media used in the embodiments provided in the embodiments of the present application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0131] The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Those skilled in the art should understand that the present application includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present application will be included in the scope of the claims.

Claims

1. A control method for a liquid cooling unit, the liquid cooling unit comprising a first liquid cooling cabinet, a second liquid cooling cabinet, a liquid supply ring network pipeline, a liquid return ring network pipeline, a main pipeline connecting the liquid supply ring network pipeline and the liquid return ring network pipeline, a liquid inlet pipeline connecting the liquid cooling cabinet and the liquid supply ring network pipeline, and a liquid outlet pipeline connecting the liquid cooling cabinet and the liquid return ring network pipeline, characterized in that: The liquid cooling unit further includes a connecting pipeline connecting the first liquid cooling cabinet and the second liquid cooling cabinet, the lengths of the liquid inlet pipeline and the liquid outlet pipeline corresponding to the first liquid cooling cabinet match the lengths of the liquid inlet pipeline and the liquid outlet pipeline corresponding to the second liquid cooling cabinet, and the method is performed periodically, and the method includes: Detecting the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, and the average value of the liquid outlet temperature and the average value of the inlet and outlet temperature difference between the first liquid cooling cabinet and the second liquid cooling cabinet; Controlling the operating state of the liquid pump in the main line according to the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, the average value of the liquid outlet temperature and the average value of the inlet and outlet liquid temperature difference; Detecting a liquid level of the first liquid-cooling cabinet, a liquid level of the second liquid-cooling cabinet, and a liquid level difference between the liquid level of the first liquid-cooling cabinet and the liquid level of the second liquid-cooling cabinet; According to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference, the operating state of the communicating vessel in the communicating pipeline and the operating state of the liquid inlet valve in each of the liquid inlet pipelines are controlled.

2. The method according to claim 1, characterized in that The controlling the operating state of the communicating vessel in the communicating pipeline and the operating state of the liquid inlet valve in each of the liquid inlet pipelines according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference comprises: When the liquid level difference is greater than or equal to a first preset liquid level threshold and less than or equal to a second preset liquid level threshold, determining a liquid level measurement error and a liquid level balance coefficient according to the liquid level of the first liquid cooling cabinet and the liquid level of the second liquid cooling cabinet; When the liquid level balance coefficient is less than a preset balance threshold, controlling the communication range of the communicating vessel to a preset range; When the liquid level balance coefficient is greater than or equal to a preset balance threshold, the communication amplitude of the communicating vessel is controlled to be a preset amplitude, and a target valve step control amount is determined according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference; According to the target valve step control amount, the valve step of the liquid inlet valve in each of the liquid inlet pipelines is controlled.

3. The method according to claim 2, characterized in that The liquid level measurement error and liquid level balance coefficient are determined by the following formula (1): The target valve step control amount is determined by the following formula (2): F1=Round(kp*(ΔL C 1-ΔL C 2)+ki*ΔL+kd*(ΔL C 1-2ΔL C 2+ΔL C 3))*θ*100% (2); In formulas (1) and (2), ΔL C 1 represents the liquid level measurement error, f′ represents the liquid level balance coefficient, L1 represents the liquid level of the first liquid cooling cabinet, L2 represents the liquid level of the second liquid cooling cabinet, F1 represents the target valve step control amount, Round(…) represents the rounding function, kp is the proportional coefficient and its value is 0.12, ΔL C 2 represents the level measurement error in the previous cycle, ki is the integral coefficient and its value is 0.15, ΔL represents the level difference, kd is the differential coefficient and its value is 0.2, ΔL C 3 represents the liquid level measurement error in the previous cycle, θ is the correction coefficient and its value is 0.

1.

4. The method according to claim 2, characterized in that: In the step of controlling the operating state of the communicating vessel in the communicating pipeline and the operating state of the liquid inlet valve in each of the liquid inlet pipelines according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference, the step further includes: When the liquid level difference is greater than a second preset liquid level threshold, controlling the valve step of the regulating valve in the liquid inlet pipeline corresponding to the first liquid cooling cabinet to be reduced by a first preset number of steps; When the liquid level difference is less than a first preset liquid level threshold, the valve step of the regulating valve in the liquid inlet pipeline corresponding to the second liquid cooling cabinet is controlled to be reduced by a first preset step number.

5. The method according to claim 4, characterized in that The step of controlling the operating state of the liquid pump in the main line according to the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, the average value of the liquid outlet temperature and the average value of the inlet and outlet liquid temperature difference includes: When the average value of the outlet liquid temperature is less than the preset outlet liquid temperature threshold, and the average value of the inlet and outlet liquid temperature difference is less than the preset temperature difference threshold, controlling the operating frequency of the liquid pump to remain unchanged; In the step of controlling the operating state of the communicating vessel in the communicating pipeline and the operating state of the liquid inlet valve in each of the liquid inlet pipelines according to the liquid level of the first liquid cooling cabinet, the liquid level of the second liquid cooling cabinet and the liquid level difference, the step further includes: When the liquid level difference is greater than a second preset liquid level threshold, controlling the valve step of the regulating valve in the liquid inlet pipeline corresponding to the second liquid cooling cabinet to increase by a second preset number of steps; When the liquid level difference is less than a first preset liquid level threshold, the valve step of the regulating valve in the liquid inlet pipeline corresponding to the first liquid cooling cabinet is controlled to increase by a second preset step number.

6. The method according to claim 1, characterized in that The controlling the operating state of the liquid pump in the main line according to the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, the average value of the liquid outlet temperature and the average value of the inlet and outlet liquid temperature difference comprises: When the average value of the liquid outlet temperature is greater than or equal to the preset liquid outlet temperature threshold and the average value of the inlet and outlet temperature difference is less than the preset temperature difference threshold, the target frequency control amount is determined according to the preset temperature difference threshold, the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, and a preset first algorithm; When the average value of the liquid outlet temperature is greater than or equal to the preset liquid outlet temperature threshold and the average value of the inlet and outlet temperature difference is greater than or equal to the preset temperature difference threshold, the target frequency control amount is determined according to the preset temperature difference threshold, the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, and a preset second algorithm; The operating frequency of the liquid pump is controlled according to the target frequency control amount.

7. The method according to claim 6, characterized in that The preset first algorithm includes the following formula (3): The preset second algorithm includes the following formula (4): In formulas (3) and (4), F2 represents the target frequency control amount, Round(…) represents the rounding function, ΔT represents the preset temperature difference threshold, the value range of A is (2°C, 6°C), Th represents the ambient temperature, Tout1 represents the outlet temperature of the first liquid cooling cabinet, Tout2 represents the outlet temperature of the second liquid cooling cabinet, T set Indicates preset calibration amount.

8. The method according to claim 6, characterized in that In the step of controlling the operating state of the liquid pump in the main line according to the ambient temperature, the liquid outlet temperature of the first liquid cooling cabinet, the liquid outlet temperature of the second liquid cooling cabinet, the average value of the liquid outlet temperature and the average value of the inlet and outlet liquid temperature difference, the step also includes: When the average value of the liquid outlet temperature is less than the preset liquid outlet temperature threshold and the average value of the inlet and outlet temperature difference is greater than or equal to the preset temperature difference threshold, the valve step of the regulating valve in the liquid pump is controlled to its maximum value.

9. An electronic device, characterized in that: The electronic device comprises: one or more processors; A memory having one or more computer programs stored thereon, wherein when the one or more computer programs are executed by the one or more processors, the one or more processors implement the control method of the liquid cooling unit according to any one of claims 1-8.

10. A computer readable medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, a control method for a liquid cooling unit according to any one of claims 1 to 8 is implemented.

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