Balanced control method and device for multi-module liquid cooling unit, unit and storage medium

By collecting and analyzing the refrigeration status parameters of the multi-module liquid chiller, identifying and adjusting unbalanced modules, dynamic balance control of the multi-module liquid chiller was achieved, solving the problem of operational imbalance between modules and improving operational coordination and stability.

CN121739652APending Publication Date: 2026-03-27GREE ELECTRIC APPLIANCE INC OF ZHUHAI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-19
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

Existing multi-module liquid cooling units lack control over individual modules, which can easily lead to imbalances in the operating status of each module. Some modules may be continuously overloaded or underloaded, affecting overall coordination and operational stability.

Method used

By collecting the cooling status parameters of each module, the actual cooling capacity and cooling imbalance are determined, the unbalanced module is identified, and the load operation parameters of the unbalanced module are adjusted according to the load status parameters to achieve dynamic balance control.

Benefits of technology

It effectively solves the problem of unbalanced cooling capacity between modules and improves the operational coordination, stability and reliability of multi-module liquid chiller units.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a balance control method and device for a multi-module liquid cooling unit, the unit and a storage medium. The method comprises the steps that refrigeration state parameters corresponding to all modules in the multi-module liquid cooling unit are collected; for each module, the actual refrigerating capacity corresponding to the module is determined according to the refrigerating state parameter corresponding to the module; according to the actual refrigerating capacity corresponding to each module, the refrigerating unbalance degree corresponding to the multi-module liquid cooling unit is determined; under the condition that the refrigeration unbalance degree is larger than a preset refrigeration unbalance threshold value, an unbalance module is determined in all the modules according to the refrigeration unbalance degree and the actual refrigerating capacity corresponding to all the modules; according to the load state parameters corresponding to all the modules, the operation parameters corresponding to the loads in the unbalance module are regulated and controlled. According to the method, the module individuals are managed and controlled, and the problem that whether the refrigerating capacity between the modules is in a balanced state or not cannot be sensed, and overload or underload of part of the modules is likely to be caused is solved.
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Description

Technical Field

[0001] This application relates to the field of refrigeration technology, and in particular to a balanced control method, device, unit, and storage medium for a multi-module liquid chiller. Background Technology

[0002] Multi-module liquid chillers are widely used in large-scale cooling scenarios such as data centers and energy storage power stations due to their advantages of flexible expansion and high reliability. Currently, multi-module liquid chillers typically consist of multiple identical modules connected in parallel. By monitoring the overall inlet and outlet water temperatures of the multi-module chiller, the operation of multiple modules is coordinated to meet the overall cooling demand. However, existing multi-module liquid chillers lack individual module control, leading to potential imbalances in the operating states of the modules.

[0003] Specifically, due to differences in pipeline resistance and uneven distribution of load operating frequency, the cooling capacity of each module will inevitably differ during actual operation. Existing control methods only adjust the total cooling capacity based on the total inlet and outlet water temperatures of the multi-module liquid chiller unit, which cannot detect these differences in operating status between modules in real time. This can lead to some modules operating under continuous overload and others operating under continuous underload, thus restricting the overall coordination and operational stability of the multi-module liquid chiller unit. Summary of the Invention

[0004] This application provides a balanced control method, device, unit, and storage medium for a multi-module liquid chiller unit, in order to solve the problem that existing multi-module liquid chiller units lack control over individual modules, which leads to an imbalance in the operating status between modules.

[0005] To address the aforementioned technical problems, the technical solution of this application is provided through the following embodiments: This application provides a balanced control method for a multi-module liquid chiller unit, comprising: collecting cooling state parameters corresponding to each module in the multi-module liquid chiller unit; for each module, determining the actual cooling capacity corresponding to the module based on the cooling state parameters; determining the cooling imbalance degree corresponding to the multi-module liquid chiller unit based on the actual cooling capacity corresponding to each module; if the cooling imbalance degree is greater than a preset cooling imbalance threshold, determining the unbalanced module among the modules based on the cooling imbalance degree and the actual cooling capacity corresponding to each module; and adjusting the operating parameters corresponding to the load in the unbalanced module based on the load state parameters corresponding to each module.

[0006] The step of determining the cooling imbalance degree of the multi-module liquid chiller unit based on the actual cooling capacity of each module includes: determining the average cooling capacity based on the actual cooling capacity of each module; and determining the cooling imbalance degree of the multi-module liquid chiller unit based on the actual cooling capacity of each module and the average cooling capacity.

[0007] The step of determining the unbalanced module in each module based on the cooling imbalance degree and the actual cooling capacity corresponding to each module includes: determining the average cooling capacity based on the actual cooling capacity corresponding to each module; determining the difference between the actual cooling capacity and the average cooling capacity for each module; and determining the cooling offset degree corresponding to the module based on the difference in cooling capacity and the cooling imbalance degree; and determining the module whose absolute value of the cooling offset degree is greater than a preset cooling offset threshold as the unbalanced module.

[0008] The step of adjusting the load-corresponding operating parameters in the unbalanced module based on the load state parameters corresponding to each of the modules includes: for each module, obtaining the fan frequency corresponding to the module from the load state parameters corresponding to the module; determining a first average fan frequency based on the fan frequencies corresponding to each module; determining a first fan frequency imbalance degree corresponding to the multi-module liquid-cooled unit based on the fan frequencies corresponding to each module and the first average fan frequency; for the unbalanced module, determining the fan frequency difference between the fan frequency corresponding to the unbalanced module and the first average fan frequency; and determining the fan frequency offset degree corresponding to the unbalanced module based on the fan frequency difference and the first fan frequency imbalance degree; determining the target load in the unbalanced module based on the fan frequency offset degree; and determining the target operating frequency corresponding to the target load based on the load state parameters corresponding to the other modules besides the unbalanced module; and controlling the target load in the unbalanced module to adjust from the current operating frequency to the target operating frequency.

[0009] The step of determining the target load in the imbalance module based on the fan frequency offset corresponding to the imbalance module includes: determining the target load in the imbalance module as a fan when the fan frequency offset is greater than a preset frequency offset threshold; and determining the target load in the imbalance module as a compressor when the fan frequency offset is less than or equal to the frequency offset threshold.

[0010] The step of determining the target operating frequency corresponding to the target load based on the load state parameters corresponding to the remaining modules (excluding the imbalance module) includes: when the target load is a fan, determining a second average fan frequency based on the fan frequencies corresponding to the remaining modules; determining a second fan frequency imbalance degree based on the fan frequencies corresponding to the remaining modules and the second average fan frequency; and determining the target operating frequency corresponding to the fan based on a preset frequency offset threshold, the second average fan frequency, and the second fan frequency imbalance degree; when the target load is a compressor, determining a second average compressor frequency based on the compressor frequencies corresponding to the remaining modules; determining a second compressor frequency imbalance degree based on the compressor frequencies corresponding to the remaining modules and the second average compressor frequency; and determining the target operating frequency corresponding to the compressor based on a preset frequency offset threshold, the second average compressor frequency, and the second compressor frequency imbalance degree.

[0011] The method further includes: performing a module balancing prompt operation when the determined cooling imbalance degree is less than or equal to the cooling imbalance threshold; and performing a module imbalance prompt operation based on module control information when the determined cooling imbalance degree is greater than the cooling imbalance threshold for a consecutive preset number of times. The module control information includes: the imbalanced module controlled each time in the consecutive preset number of times, the load controlled each time, and the operating parameters before and after the control.

[0012] This application embodiment also provides a balancing control device for a multi-module liquid chiller unit, comprising: a data acquisition module for acquiring refrigeration status parameters corresponding to each module in the multi-module liquid chiller unit; a first determination module for determining the actual cooling capacity of each module based on the refrigeration status parameters corresponding to the module; a second determination module for determining the refrigeration imbalance degree of the multi-module liquid chiller unit based on the actual cooling capacity corresponding to each module; a third determination module for determining an unbalanced module among the modules based on the refrigeration imbalance degree and the actual cooling capacity corresponding to each module when the refrigeration imbalance degree is greater than a preset refrigeration imbalance threshold; and a balancing control module for adjusting the load-corresponding operating parameters in the unbalanced module based on the load status parameters corresponding to each module.

[0013] This application embodiment also provides a multi-module liquid cooling unit, including: at least one communication interface; at least one bus connected to the at least one communication interface; at least one processor connected to the at least one bus; and at least one memory connected to the at least one bus, wherein the processor is configured to: execute a balanced control program for the multi-module liquid cooling unit stored in the memory to implement the balanced control method for the multi-module liquid cooling unit described in any of the above claims.

[0014] This application also provides a computer-readable storage medium storing computer-executable instructions, which are executed to implement the balanced control method for the multi-module liquid-cooled unit described in any of the above claims.

[0015] Compared with the prior art, the technical solution provided in this application has the following advantages: The method provided in this application can collect the refrigeration status parameters corresponding to each module in a multi-module liquid chiller unit; for each module, the actual cooling capacity corresponding to the module is determined according to the refrigeration status parameters corresponding to the module; the refrigeration imbalance degree corresponding to the multi-module liquid chiller unit is determined according to the actual cooling capacity corresponding to each module; when the refrigeration imbalance degree is greater than a preset refrigeration imbalance threshold, the imbalanced module is determined in each module according to the refrigeration imbalance degree and the actual cooling capacity corresponding to each module; the load corresponding to the load in the imbalanced module is adjusted according to the load status parameters corresponding to each module. This application embodiment can independently collect the refrigeration status parameters of each module, quantitatively evaluate the overall refrigeration imbalance degree of the unit, and locate the imbalanced module that causes each module to be in an unbalanced operating state. Finally, by dynamically adjusting the load operating parameters in the imbalanced module, the modules can be made to operate in a balanced manner. This application embodiment effectively solves the problem that multi-module liquid chiller units cannot detect whether the cooling capacity between modules is in a balanced state during actual operation, which can easily lead to overload or underload of some modules by controlling individual modules. This improves the operation coordination, operation stability and reliability of multi-module liquid chiller units. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0019] Figure 1 This is an architectural diagram of a multi-module liquid-cooled unit according to an embodiment of this application; Figure 2 This is a flowchart of a balanced control method for a multi-module liquid-cooled unit according to an embodiment of this application; Figure 3 This is a flowchart illustrating the steps for determining an imbalance module according to an embodiment of this application. Figure 4 This is a flowchart illustrating the steps of equilibrium control according to an embodiment of this application; Figure 5 This is a flowchart of the equalization control prompting steps according to an embodiment of this application; Figure 6 This is a timing diagram of the balanced control of a multi-module liquid-cooled unit according to an embodiment of this application; Figure 7 This is a structural diagram of a balanced control device for a multi-module liquid-cooled unit according to an embodiment of this application; Figure 8 This is a structural diagram of a multi-module liquid-cooled unit according to an embodiment of this application. Detailed Implementation

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

[0021] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0022] This application provides a multi-module liquid-cooled unit. For example... Figure 1 The diagram shown is an architecture diagram of a multi-module liquid-cooled unit according to an embodiment of this application.

[0023] This multi-module liquid chiller unit includes: a control unit (not shown in the figure), circulation piping, and multiple modules. All modules in the multi-module liquid chiller unit have the same specifications.

[0024] The control unit connects to multiple modules and is used to regulate the load corresponding to each module.

[0025] Multiple modules are connected in parallel on a shared circulation pipeline.

[0026] Multiple modules have cooling capacity. Refrigerant in the circulation pipeline can flow into each module, and after flowing through the module, the refrigerant flows back into the circulation pipeline.

[0027] Based on the aforementioned multi-module liquid-cooled chiller unit, this application provides a method for balanced control of the multi-module liquid-cooled chiller unit. The executing entity in this application embodiment can be the aforementioned control unit. For example... Figure 2 The diagram shown is a flowchart of a balanced control method for a multi-module liquid-cooled unit according to an embodiment of this application.

[0028] Step S210: Collect the refrigeration status parameters corresponding to each module in the multi-module liquid chiller unit.

[0029] Cooling status parameters refer to the parameters corresponding to the cooling performance of the module. These parameters include, but are not limited to, the module's inlet water temperature, outlet water temperature, and refrigerant flow rate.

[0030] Furthermore, the refrigeration status parameters corresponding to each operating module in the multi-module liquid chiller unit are collected. That is, the module in this embodiment refers to the module in operation.

[0031] This application embodiment independently monitors the operating status of each module in a multi-module system in order to determine whether the cooling capacity of each module is balanced, thus providing a data foundation for subsequent balanced control of each module.

[0032] Step S220: For each module, determine the actual cooling capacity corresponding to the module based on the cooling status parameters corresponding to the module.

[0033] Actual cooling capacity refers to the cooling output of the module.

[0034] Step S230: Determine the cooling imbalance degree corresponding to the multi-module liquid cooling unit based on the actual cooling capacity of each module.

[0035] Cooling imbalance refers to the degree of uneven distribution of cooling load among the modules in a multi-module liquid chiller unit. Specifically, cooling imbalance reflects whether each module is operating in an unbalanced state.

[0036] Step S240: If the cooling imbalance degree is greater than the preset cooling imbalance threshold, determine the imbalance module among the modules according to the cooling imbalance degree and the actual cooling capacity corresponding to each module.

[0037] The cooling imbalance threshold is used to determine whether equalization control of the modules in a multi-module liquid chiller unit is necessary. The cooling imbalance threshold can be an empirical value or a value obtained through experiments. For example, the cooling imbalance threshold can be set to 10%.

[0038] An unbalanced module refers to an abnormal module whose actual cooling capacity deviates from the overall average level. In other words, an unbalanced module is the root cause of the unbalanced operation of various modules.

[0039] In this embodiment, when the cooling imbalance degree is greater than a preset cooling imbalance threshold, it is determined that each module is in an unbalanced operating state. Based on the cooling imbalance degree and the actual cooling capacity of each module, the unbalanced module is identified among the modules, thereby accurately locating the module with an abnormal operating state compared to other modules. This avoids blindly adjusting all modules and only regulates the unbalanced module, achieving targeted and efficient balance control.

[0040] Step S250: Adjust the operating parameters corresponding to the load in the unbalanced module according to the load status parameters corresponding to each module.

[0041] Load status parameters refer to the operating parameters of the loads in the module. The types of loads include, but are not limited to, fans and compressors.

[0042] The operating parameter can be the operating frequency of the load. Specifically, when the load being regulated is a fan, the operating parameter can be the fan frequency; when the load being regulated is a compressor, the operating parameter can be the compressor frequency.

[0043] By adjusting the operating parameters corresponding to the load in the imbalance module, the actual cooling capacity of each module in the multi-module liquid chiller unit can be made more balanced.

[0044] This application embodiment can collect the refrigeration status parameters corresponding to each module in a multi-module liquid-cooled unit; for each module, determine the actual cooling capacity corresponding to the module based on the refrigeration status parameters; determine the refrigeration imbalance degree corresponding to the multi-module liquid-cooled unit based on the actual cooling capacity corresponding to each module; if the refrigeration imbalance degree is greater than a preset refrigeration imbalance threshold, determine the unbalanced module among the modules based on the refrigeration imbalance degree and the actual cooling capacity corresponding to each module; and adjust the load corresponding operating parameters in the unbalanced module based on the load status parameters corresponding to each module. This application embodiment can quantitatively evaluate the overall refrigeration imbalance degree of the unit by independently collecting the refrigeration status parameters of each module, and locate the unbalanced module that causes each module to be in an unbalanced operating state. Finally, by dynamically adjusting the load operating parameters in the unbalanced module, the modules can be made to operate in a balanced manner. This application embodiment effectively solves the problem that multi-module liquid chiller units cannot detect whether the cooling capacity between modules is in a balanced state during actual operation, which can easily lead to overload or underload of some modules by controlling individual modules. This improves the operation coordination, operation stability and reliability of multi-module liquid chiller units.

[0045] To make the embodiments of this application easier to understand, the equalization control method of the multi-module liquid-cooled unit of this application will be further described below.

[0046] In this embodiment, sensors for determining and detecting refrigeration status parameters can be installed on the piping of each module in the multi-module liquid chiller unit. Then, the refrigeration status parameters corresponding to each module can be collected using the sensors installed on the piping of each module.

[0047] Cooling status parameters include, but are not limited to: inlet water temperature, outlet water temperature, and refrigerant flow rate.

[0048] Specifically, temperature sensors can be installed at the inlet and outlet of the pipeline in each module, and a flow meter can be installed on the pipeline in each module. The temperature sensor at the inlet is used to detect the inlet water temperature, the temperature sensor at the outlet is used to detect the outlet water temperature, and the flow meter on the pipeline is used to detect the refrigerant flow rate.

[0049] Furthermore, the refrigeration status parameters of each module in the multi-module liquid chiller can be collected at preset collection time intervals. The collection time interval can be an empirical value or a value obtained through experiments. For example, if the collection time interval is 10 seconds, the refrigeration status parameters of each module in the multi-module liquid chiller can be collected periodically within 10 seconds.

[0050] In this embodiment of the application, after collecting the refrigeration status parameters corresponding to each module in the multi-module liquid cooling unit, the actual cooling capacity of each module can be determined based on the refrigeration status parameters corresponding to the module.

[0051] Specifically, for each module, the actual cooling capacity of the module can be determined based on the inlet water temperature, outlet water temperature, and refrigerant flow rate.

[0052] For example, the actual cooling capacity of the module can be determined using the following formula: ; ; in, Indicates the first The actual cooling capacity corresponding to each module; Indicates the density of the refrigerant; This indicates the specific heat capacity of the refrigerant; Indicates the first The refrigerant flow rate corresponding to each module; Indicates the first The inlet water temperature corresponding to each module; Indicates the first The outlet water temperature corresponds to each module. The density and specific heat capacity of the refrigerant can be preset values.

[0053] Furthermore, to improve the accuracy of the cooling status parameters and the accuracy of the actual cooling capacity of the modules, the cooling status parameters corresponding to each module can be collected multiple times consecutively. For each module, the average value of the parameter type is calculated from the multiple collected cooling status parameters. Based on the average value corresponding to each parameter type, the actual cooling capacity of the module is determined. Parameter types include, but are not limited to: inlet water temperature, outlet water temperature, and refrigerant flow rate.

[0054] In this embodiment of the application, after determining the actual cooling capacity corresponding to each of the modules, the cooling imbalance corresponding to the multi-module liquid cooling unit can be determined based on the actual cooling capacity corresponding to each of the modules.

[0055] Specifically, the average cooling capacity can be determined based on the actual cooling capacity of each module; and the cooling imbalance of the multi-module liquid chiller can be determined based on the actual cooling capacity of each module and the average cooling capacity.

[0056] For example, the refrigeration imbalance of a multi-module liquid chiller unit can be determined using the following formula: ; ; in, This indicates the degree of refrigeration imbalance corresponding to a multi-module liquid chiller unit; Indicates the number of modules in a multi-module liquid chiller unit; Indicates the first The actual cooling capacity corresponding to each module; This indicates the average cooling capacity of a multi-module liquid chiller unit.

[0057] In this embodiment, after determining the refrigeration imbalance degree corresponding to the multi-module liquid cooling unit, the refrigeration imbalance degree can be compared with a preset refrigeration imbalance threshold. If the refrigeration imbalance degree is less than or equal to the refrigeration imbalance threshold, it is determined that each module is in a balanced operating state. If the refrigeration imbalance degree is greater than the refrigeration imbalance threshold, it is determined that each module is in an unbalanced operating state. At this time, it is necessary to determine the unbalanced module in each module based on the refrigeration imbalance degree and the actual cooling capacity corresponding to each module.

[0058] Figure 3 This is a flowchart of the steps for determining the imbalance module according to an embodiment of this application.

[0059] Step S310: Determine the average cooling capacity based on the actual cooling capacity corresponding to each module.

[0060] Average cooling capacity refers to the arithmetic mean of the actual cooling capacity of all modules in a multi-module liquid chiller unit.

[0061] Step S320: For each module, determine the difference between the actual cooling capacity and the average cooling capacity corresponding to the module; and determine the cooling offset corresponding to the module based on the difference in cooling capacity and the cooling imbalance.

[0062] The differential cooling capacity represents the deviation of the module's actual cooling capacity from the average cooling capacity.

[0063] Cooling offset measures the relative deviation of a module's actual cooling capacity from its average cooling capacity. A cooling offset greater than 0 indicates that the module's actual cooling capacity is higher than the average level, suggesting a potential overload issue; a cooling offset less than 0 indicates that the module's actual cooling capacity is lower than the average level, suggesting a potential underload issue.

[0064] For example, the cooling offset of the module can be determined using the following formula: ; in, Indicates the first The cooling offset corresponding to each module; Indicates the first The actual cooling capacity corresponding to each module; This indicates the average cooling capacity of a multi-module liquid chiller unit. This indicates the degree of refrigeration imbalance corresponding to a multi-module liquid chiller unit.

[0065] Step S330: In each of the modules, the module whose absolute value of the cooling offset is greater than a preset cooling offset threshold is determined as an unbalanced module.

[0066] The cooling offset threshold is used to measure whether the module's cooling performance fluctuates normally or deviates abnormally. The cooling offset threshold can be an empirical value or a value obtained through experimentation. For example, the cooling offset threshold can be set to 2.5.

[0067] An unbalanced module refers to an abnormal module whose actual cooling capacity deviates from the overall average level.

[0068] The embodiments of this application can quantify whether the cooling capacity between each module is balanced, and when the cooling capacity between each module is unbalanced, the cooling offset threshold can be used to locate the unbalanced module in each module.

[0069] In this embodiment of the application, after determining the unbalanced module, the load-corresponding operating parameters in the unbalanced module can be adjusted according to the load state parameters corresponding to each module, so as to achieve balanced control for each module.

[0070] Furthermore, the number of imbalance modules can be one or more, and the following equilibrium control operation is performed for each imbalance module.

[0071] Figure 4 This is a flowchart of the steps for balance control according to an embodiment of this application.

[0072] Step S410: For each module, obtain the corresponding fan frequency from the load status parameters of the module.

[0073] Fan frequency refers to the operating frequency of the fan within the module.

[0074] Step S420: Determine the first average fan frequency based on the fan frequency corresponding to each of the modules.

[0075] The first average fan frequency refers to the arithmetic average of the fan frequencies of all modules in a multi-module liquid chiller unit.

[0076] For example, the first average fan frequency can be determined using the following formula: ; in, This represents the first average fan frequency corresponding to the multi-module liquid-cooled unit; Indicates the number of modules in a multi-module liquid chiller unit; Indicates the first The actual cooling capacity corresponding to each module.

[0077] Step S430: Determine the first fan frequency imbalance degree corresponding to the multi-module liquid cooling unit based on the fan frequency corresponding to each module and the first average fan frequency.

[0078] The first fan frequency imbalance refers to the degree of frequency imbalance among the fans in each module of a multi-module liquid chiller unit. Specifically, the first fan frequency imbalance reflects whether the fan frequencies of each module are operating in a balanced manner.

[0079] For example, the frequency imbalance of the first fan can be determined using the following formula: ; in, This indicates the frequency imbalance of the first fan corresponding to a multi-module liquid-cooled unit. This represents the first average fan frequency corresponding to the multi-module liquid-cooled unit; Indicates the number of modules in a multi-module liquid chiller unit; Indicates the first The actual cooling capacity corresponding to each module.

[0080] Step S440: For the imbalance module, determine the fan frequency offset corresponding to the imbalance module based on the difference between the fan frequency corresponding to the imbalance module and the first average fan frequency; and determine the fan frequency offset corresponding to the imbalance module by using the difference fan frequency and the imbalance degree of the first fan frequency.

[0081] The differential fan frequency represents the offset of the fan frequency of the imbalance module relative to the first average fan frequency.

[0082] The fan frequency offset is used to measure the relative deviation of the fan frequency of the unbalanced module from the first average fan frequency. A fan frequency offset greater than 0 indicates that the fan frequency of the unbalanced module is higher than the average level; a fan frequency offset less than 0 indicates that the fan frequency of the unbalanced module is lower than the average level.

[0083] For example, the frequency offset of the unbalanced module can be determined using the following formula: ; in, This indicates the frequency imbalance of the first fan corresponding to a multi-module liquid-cooled unit. Indicates the fan frequency corresponding to the imbalance module; This represents the first average fan frequency corresponding to the multi-module liquid-cooled unit; This indicates the frequency imbalance of the first fan corresponding to the multi-module liquid-cooled unit.

[0084] The embodiments of this application quantify the imbalance contribution of the imbalance module at the wind turbine load level, which can provide a basis for subsequent selection of control targets (wind turbine or compressor) and target operating frequencies.

[0085] Step S450: Determine the target load in the imbalance module based on the wind turbine frequency offset corresponding to the imbalance module, and determine the target operating frequency corresponding to the target load based on the load state parameters corresponding to the other modules besides the imbalance module.

[0086] The target load refers to the load to be adjusted in the unbalanced module. The target operating frequency refers to the operating frequency of the application to be applied under the target load.

[0087] The method for determining the target load and its target operating frequency will be described later.

[0088] Step S460: Control the target load in the imbalance module to adjust from the current operating frequency to the target operating frequency.

[0089] The imbalance control module adjusts the target load to the target operating frequency; and after the target load reaches the target operating frequency, it maintains the target load at that frequency for a preset operating time period. The duration of this operating time period can be an empirical value or a value obtained through experimentation. Different types of loads can correspond to different operating time periods. For example, the operating time period for a fan could be 30 seconds, and the operating time period for a compressor could be 60 seconds.

[0090] In this embodiment of the application, determining the target load in the imbalance module includes: determining the target load in the imbalance module as a fan when the fan frequency offset is greater than a preset frequency offset threshold; and determining the target load in the imbalance module as a compressor when the fan frequency offset is less than or equal to the frequency offset threshold.

[0091] The frequency offset threshold is used to measure whether the module's load frequency fluctuates normally or deviates abnormally. The frequency offset threshold can be an empirical value or a value obtained through experimentation. For example, the frequency offset threshold can be set to 2.5.

[0092] If the frequency deviation of the fan corresponding to the imbalance module is greater than the frequency deviation threshold, it means that the fan frequency of the imbalance module has deviated from the average fan frequency level of each module. This is very likely the reason for the deviation in the cooling capacity of the imbalance module. Therefore, the fan in the imbalance module can be identified as the target load that needs to be controlled.

[0093] If the fan frequency deviation of the imbalance module is less than or equal to the frequency deviation threshold, it means that although the fan frequency of the imbalance module deviates from the average fan frequency of each module, it is acceptable. This indicates that the fan frequency of the imbalance module is not the cause of the deviation in the module's cooling capacity. If the main loads in the imbalance module are the fan and the compressor, then the compressor frequency in the imbalance module is the cause of the deviation in the module's cooling capacity. Therefore, the compressor in the imbalance module is identified as the target load that needs to be adjusted.

[0094] In this embodiment of the application, determining the target operating frequency corresponding to the target load includes: when the target load is a wind turbine, determining a second average wind turbine frequency based on the wind turbine frequencies corresponding to the other modules respectively; determining a second wind turbine frequency imbalance based on the wind turbine frequencies corresponding to the other modules respectively and the second average wind turbine frequency; and determining the target operating frequency corresponding to the wind turbine based on a preset frequency offset threshold, the second average wind turbine frequency, and the second wind turbine frequency imbalance.

[0095] When the target load is a fan, the outlier value of the fan frequency of the imbalance module can be isolated. The fan frequency of the other modules can be used to redetermine the average fan frequency and the fan frequency imbalance. Then, the target operating frequency of the fan can be deduced by using the frequency offset threshold.

[0096] For example, the target operating frequency of the wind turbine can be determined using the following formula: ; ; ; in, Indicates the second average fan frequency; This indicates the number of modules in a multi-module liquid chiller unit, excluding the currently unbalanced module. Indicates the first in the remaining modules The fan frequency corresponding to each module; Indicates the frequency imbalance of the second fan; The value is assigned to the frequency offset threshold; This indicates the target operating frequency corresponding to the fan in the unbalanced module.

[0097] In this embodiment of the application, determining the target operating frequency corresponding to the target load includes: when the target load is a compressor, determining a second average compressor frequency based on the compressor frequencies corresponding to the other modules respectively; determining a second compressor frequency imbalance based on the compressor frequencies corresponding to the other modules respectively and the second average compressor frequency; and determining the target operating frequency corresponding to the compressor based on a preset frequency offset threshold, the second average compressor frequency and the second compressor frequency imbalance.

[0098] When the target load is a compressor, the abnormal value of the compressor frequency of the imbalance module can be isolated, and the compressor frequency of the other modules can be used to redetermine the average compressor frequency and the compressor frequency imbalance. Then, the target operating frequency of the compressor can be deduced by using the frequency offset threshold.

[0099] For example, the target operating frequency of the compressor can be determined using the following formula: ; ; ; in, Indicates the second average compressor frequency; This indicates the number of modules in a multi-module liquid chiller unit, excluding the currently unbalanced module. Indicates the first in the remaining modules The compressor frequency corresponding to each module; Indicates the frequency imbalance of the second compressor; The value is assigned to the frequency offset threshold; This indicates the target operating frequency of the compressor corresponding to the imbalance module.

[0100] In this embodiment of the application, in order to enable users to know whether the multi-module liquid cooling unit is in a balanced operating state, a prompting operation can be performed after determining whether the multi-module liquid cooling unit is in a balanced operating state or an unbalanced operating state.

[0101] If the determined cooling imbalance degree is less than or equal to the cooling imbalance threshold, a module balancing prompt operation is performed; if the determined cooling imbalance degree is greater than the cooling imbalance threshold for a consecutive preset number of times, a module imbalance prompt operation is performed according to the module control information; wherein, the module control information includes, but is not limited to: the imbalanced module controlled each time in the consecutive preset number of times, the load controlled each time, and the operating parameters before and after the control.

[0102] like Figure 5 The diagram shown is a flowchart of the equalization control prompting steps according to an embodiment of this application.

[0103] Step S510: After determining the refrigeration imbalance degree corresponding to the multi-module liquid cooling unit, the refrigeration imbalance degree is compared with the preset refrigeration imbalance threshold.

[0104] Step S520: Determine whether the cooling imbalance degree is greater than the cooling imbalance threshold; if yes, proceed to step S530; if no, proceed to step S570.

[0105] Step S530: If the cooling imbalance degree is greater than the cooling imbalance threshold, read the number of imbalance cycles.

[0106] Step S540: Determine whether the number of imbalance cycles is greater than the preset number; if yes, proceed to step S550; if no, proceed to step S560.

[0107] The preset number of attempts is used as a threshold. The preset number of attempts can be an empirical value or a value obtained through experiments. For example, a preset number of attempts of 3 is used to determine whether the cooling imbalance has been determined to be greater than the cooling imbalance threshold for 3 consecutive times.

[0108] Step S550: If the cooling imbalance degree determined by a preset number of consecutive times is greater than the cooling imbalance threshold, execute the module imbalance prompt operation according to the module control information.

[0109] The module control information includes, but is not limited to: the unbalanced module in each of the consecutive preset number of controls, the load in each control, and the operating parameters before and after the control.

[0110] Furthermore, based on the module control information, a module imbalance prompt is generated; wherein the module imbalance prompt includes the module control information; the module imbalance prompt is sent to a preset terminal; the terminal displays the module control information in the module imbalance prompt.

[0111] Furthermore, the log data of the multi-module liquid chiller unit can record timestamped data and the action response data of each module. The timestamped data includes, but is not limited to, module control information.

[0112] For example: at 8:30:00 on November 19, 2025, a target operating frequency is issued to the wind turbine. The timestamp of the issued command, the wind turbine to be controlled by the command, the target operating frequency, and the current status of the wind turbine are recorded in the log data. At 8:30:35 on November 19, 2025, the wind turbine reaches the target frequency value. The time of the wind turbine's response completion, the current operating frequency of the wind turbine, and the current status of the wind turbine are recorded in the log data.

[0113] Step S560: Accumulate the current number of imbalance cycles and jump to step S510.

[0114] Step S570: If the cooling imbalance degree is less than or equal to the cooling imbalance threshold, perform a module balancing prompt operation.

[0115] Based on the module control information, the module balancing prompt operation can be performed.

[0116] The module control information may also include: the actual cooling capacity of each module determined each time, and the cooling imbalance of the multi-module liquid chiller unit.

[0117] Furthermore, based on the module control information, a module balance prompt is generated; wherein the module balance prompt includes the module control information; the module balance prompt is sent to a preset terminal; the terminal displays the module control information in the module balance prompt.

[0118] Step S580: Reset the current number of unbalanced cycles to zero.

[0119] To make the embodiments of this application easier to understand, an application process of an embodiment of this application is given below. Figure 6 This is a timing diagram for the balanced control of a multi-module liquid-cooled unit according to an embodiment of this application.

[0120] In the equalization control timing diagram, the horizontal axis represents time, and the vertical axis represents the sequence and duration of multiple key events and control actions.

[0121] The imbalance state on the vertical axis: a high level indicates that the system is balanced, that is, all modules are operating in a balanced state; a low level indicates that the system is unbalanced, that is, all modules are operating in an unbalanced state.

[0122] The wind turbine frequency on the vertical axis corresponds to the wind turbine frequency of the imbalance module.

[0123] The compressor frequency on the vertical axis corresponds to the compressor frequency of the unbalanced module.

[0124] When the imbalance is at a high level "1", that is, when all modules are balanced, the fans and compressors in each module do not make any adjustments, and the refrigeration status parameters are collected periodically.

[0125] If the cooling imbalance of the multi-module liquid chiller is determined to be greater than 10% (cooling imbalance threshold) based on the cooling status parameters collected within 50 consecutive seconds, the imbalance status changes from "1" to "0", indicating that each module is in an unbalanced operating state.

[0126] At this point, it is necessary to identify the module causing the imbalance among all modules. Specifically, identify the imbalanced module among all modules and determine that the fan frequency of the imbalanced module is abnormal. After giving the target operating frequency of the fan, control the fan in the imbalanced module to adjust to the target operating frequency (the calculation process is not shown in the diagram).

[0127] Subsequently, the fan in the imbalance module gradually increases its frequency, and after reaching the target operating frequency, it maintains it for 30 seconds, during which time the compressor does not make any adjustments; since the frequency increase takes a certain amount of time, the overall time for adjusting the fan frequency is greater than 30 seconds.

[0128] When the wind turbine maintains the target operating frequency for 30 seconds, the number of imbalance cycles is incremented by 1.

[0129] Then, the refrigeration status parameters are collected for 50 seconds. If the refrigeration imbalance of the multi-module liquid chiller is determined to be greater than 10% based on the refrigeration status parameters collected within 50 consecutive seconds, it indicates that the balance control has failed, and the imbalance state remains "0", meaning that each module is still unbalanced.

[0130] At this point, it is necessary to identify the module causing the imbalance among all modules. Specifically, identify the imbalanced module among all modules and determine that the compressor frequency in the imbalanced module is abnormal. After giving the target operating frequency of the compressor, control the compressor in the imbalanced module to adjust to the target operating frequency.

[0131] Subsequently, the compressor in the imbalance module gradually increases its frequency. After reaching the target operating frequency, it remains at that frequency for 60 seconds. During this period, the fan in the imbalance module does not make any adjustments. Since it takes a certain amount of time for the compressor to increase its frequency, the total time for adjusting the compressor frequency is greater than 60 seconds.

[0132] While the compressor maintains the target operating frequency for 60 seconds, the number of imbalance cycles accumulates to 1.

[0133] Then, the refrigeration status parameters are collected for 50 seconds. If the refrigeration imbalance of the multi-module liquid chiller is determined to be less than 10% based on the refrigeration status parameters collected within 50 consecutive seconds, it indicates that the balance control is successful, and the imbalance state changes from "0" to "1", that is, all modules are balanced.

[0134] When the balance control is successfully determined, that is, when the cooling imbalance of the multi-module liquid chiller is less than 10%, the imbalance cycle count is reset to zero, and the module balance prompt operation can be performed at this time.

[0135] For the above process, the following data can be recorded in the log data: 1. The log data can record the generation time of the imbalance signal, the corresponding imbalance module number, and the degree of cooling imbalance corresponding to the imbalance module.

[0136] 2. The target load type, frequency regulation action type (e.g., increasing fan frequency or decreasing compressor frequency), and target operating frequency can be recorded in the log data.

[0137] 3. The trigger time of alarm events (balanced prompt operation) and the system status (balanced or unbalanced) can be recorded in the log data.

[0138] All records in the log data can be timestamped, with timestamps accurate to the millisecond level. Timeline playback can be performed based on the log data to reproduce the balancing control process of the multi-module liquid-cooled unit.

[0139] This application also provides a balanced control device for a multi-module liquid-cooled unit. This application embodiment can be incorporated into the aforementioned control unit. For example... Figure 7 The diagram shown is a structural diagram of a balanced control device for a multi-module liquid-cooled unit according to an embodiment of this application.

[0140] The equalization control device for the multi-module liquid chiller unit includes: The data acquisition module 710 is used to collect the refrigeration status parameters corresponding to each module in the multi-module liquid chiller unit; The first determining module 720 is used to determine the actual cooling capacity of each module based on the cooling status parameters corresponding to the module.

[0141] The second determining module 730 is used to determine the refrigeration imbalance degree corresponding to the multi-module liquid cooling unit based on the actual refrigeration capacity corresponding to each module.

[0142] The third determining module 740 is used to determine the unbalanced module among the modules based on the cooling imbalance degree and the actual cooling capacity corresponding to each module when the cooling imbalance degree is greater than the preset cooling imbalance threshold.

[0143] The balancing control module 750 is used to adjust the operating parameters corresponding to the load in the unbalanced module according to the load status parameters corresponding to each module.

[0144] The functions of the apparatus described in this application embodiment have been described in the above method embodiments. Therefore, for any parts not detailed in the description of this embodiment, please refer to the relevant descriptions in the foregoing embodiments, which will not be repeated here.

[0145] This application also provides a multi-module liquid-cooled unit, such as... Figure 8 The diagram shown is a structural diagram of a multi-module liquid-cooled unit according to an embodiment of this application.

[0146] The multi-module liquid cooling unit includes a processor 810, a communication interface 820, a memory 830, and a communication bus 840. The processor 810, communication interface 820, and memory 830 communicate with each other via the communication bus 840.

[0147] The memory 830 is used to store computer programs.

[0148] In one embodiment of this application, when the processor 810 executes the program stored in the memory 830, it implements the multi-module liquid cooling unit method provided in any of the foregoing method embodiments, including: collecting cooling status parameters corresponding to each module in the multi-module liquid cooling unit; for each module, determining the actual cooling capacity corresponding to the module based on the cooling status parameters corresponding to the module; determining the cooling imbalance degree corresponding to the multi-module liquid cooling unit based on the actual cooling capacity corresponding to each module; if the cooling imbalance degree is greater than a preset cooling imbalance threshold, determining the unbalanced module in each module based on the cooling imbalance degree and the actual cooling capacity corresponding to each module; and adjusting the load-corresponding operating parameters in the unbalanced module based on the load status parameters corresponding to each module.

[0149] The step of determining the cooling imbalance degree of the multi-module liquid chiller unit based on the actual cooling capacity of each module includes: determining the average cooling capacity based on the actual cooling capacity of each module; and determining the cooling imbalance degree of the multi-module liquid chiller unit based on the actual cooling capacity of each module and the average cooling capacity.

[0150] The step of determining the unbalanced module in each module based on the cooling imbalance degree and the actual cooling capacity corresponding to each module includes: determining the average cooling capacity based on the actual cooling capacity corresponding to each module; determining the difference between the actual cooling capacity and the average cooling capacity for each module; and determining the cooling offset degree corresponding to the module based on the difference in cooling capacity and the cooling imbalance degree; and determining the module whose absolute value of the cooling offset degree is greater than a preset cooling offset threshold as the unbalanced module.

[0151] The step of adjusting the load-corresponding operating parameters in the unbalanced module based on the load state parameters corresponding to each of the modules includes: for each module, obtaining the fan frequency corresponding to the module from the load state parameters corresponding to the module; determining a first average fan frequency based on the fan frequencies corresponding to each module; determining a first fan frequency imbalance degree corresponding to the multi-module liquid-cooled unit based on the fan frequencies corresponding to each module and the first average fan frequency; for the unbalanced module, determining the fan frequency difference between the fan frequency corresponding to the unbalanced module and the first average fan frequency; and determining the fan frequency offset degree corresponding to the unbalanced module based on the fan frequency difference and the first fan frequency imbalance degree; determining the target load in the unbalanced module based on the fan frequency offset degree; and determining the target operating frequency corresponding to the target load based on the load state parameters corresponding to the other modules besides the unbalanced module; and controlling the target load in the unbalanced module to adjust from the current operating frequency to the target operating frequency.

[0152] The step of determining the target load in the imbalance module based on the fan frequency offset corresponding to the imbalance module includes: determining the target load in the imbalance module as a fan when the fan frequency offset is greater than a preset frequency offset threshold; and determining the target load in the imbalance module as a compressor when the fan frequency offset is less than or equal to the frequency offset threshold.

[0153] The step of determining the target operating frequency corresponding to the target load based on the load state parameters corresponding to the remaining modules (excluding the imbalance module) includes: when the target load is a fan, determining a second average fan frequency based on the fan frequencies corresponding to the remaining modules; determining a second fan frequency imbalance degree based on the fan frequencies corresponding to the remaining modules and the second average fan frequency; and determining the target operating frequency corresponding to the fan based on a preset frequency offset threshold, the second average fan frequency, and the second fan frequency imbalance degree; when the target load is a compressor, determining a second average compressor frequency based on the compressor frequencies corresponding to the remaining modules; determining a second compressor frequency imbalance degree based on the compressor frequencies corresponding to the remaining modules and the second average compressor frequency; and determining the target operating frequency corresponding to the compressor based on a preset frequency offset threshold, the second average compressor frequency, and the second compressor frequency imbalance degree.

[0154] The method further includes: performing a module balancing prompt operation when the determined cooling imbalance degree is less than or equal to the cooling imbalance threshold; and performing a module imbalance prompt operation based on module control information when the determined cooling imbalance degree is greater than the cooling imbalance threshold for a consecutive preset number of times. The module control information includes: the imbalanced module controlled each time in the consecutive preset number of times, the load controlled each time, and the operating parameters before and after the control. This application also provides a computer-readable storage medium storing a computer program thereon. When executed by a processor, the computer program implements the steps of the equalization control method for a multi-module liquid-cooled unit as provided in any of the foregoing method embodiments. Since the equalization control method for a multi-module liquid-cooled unit has been described in detail above, any omissions or deficiencies in this embodiment can be found in the relevant descriptions in the foregoing embodiments, and will not be repeated here.

[0155] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0156] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0157] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0158] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A balanced control method for a multi-module liquid-cooled unit, characterized in that, include: Collect the refrigeration status parameters corresponding to each module in the multi-module liquid chiller unit; For each module, the actual cooling capacity of the module is determined based on the cooling status parameters corresponding to the module. The refrigeration imbalance of the multi-module liquid chiller unit is determined based on the actual refrigeration capacity of each module. If the cooling imbalance degree is greater than the preset cooling imbalance threshold, the imbalance module is determined in each module according to the cooling imbalance degree and the actual cooling capacity corresponding to each module. Based on the load status parameters corresponding to each module, the operating parameters corresponding to the load in the unbalanced module are adjusted.

2. The method according to claim 1, characterized in that, The step of determining the refrigeration imbalance of the multi-module liquid chiller unit based on the actual refrigeration capacity of each module includes: The average cooling capacity is determined based on the actual cooling capacity of each module. The refrigeration imbalance of the multi-module liquid chiller is determined based on the actual refrigeration capacity of each module and the average refrigeration capacity.

3. The method according to claim 1, characterized in that, The step of determining the unbalanced module among the modules based on the cooling imbalance degree and the actual cooling capacity corresponding to each module includes: The average cooling capacity is determined based on the actual cooling capacity of each module. For each module, the difference between the actual cooling capacity and the average cooling capacity corresponding to the module is determined; and the cooling offset corresponding to the module is determined based on the difference in cooling capacity and the cooling imbalance. Among the various modules, the module whose absolute value of the cooling offset is greater than a preset cooling offset threshold is identified as an unbalanced module.

4. The method according to claim 1, characterized in that, The step of adjusting the operating parameters corresponding to the load in the unbalanced module based on the load status parameters corresponding to each module includes: For each module, the corresponding fan frequency is obtained from the load status parameters of the module. The first average fan frequency is determined based on the fan frequency corresponding to each of the modules. Based on the fan frequency corresponding to each module and the first average fan frequency, the first fan frequency imbalance degree corresponding to the multi-module liquid cooling unit is determined. For the imbalance module, the fan frequency is determined based on the difference between the fan frequency corresponding to the imbalance module and the first average fan frequency; and the fan frequency offset corresponding to the imbalance module is determined by the imbalance between the difference fan frequency and the first fan frequency. Based on the wind turbine frequency offset corresponding to the imbalance module, the target load in the imbalance module is determined, and based on the load state parameters corresponding to the other modules besides the imbalance module, the target operating frequency corresponding to the target load is determined. The target load in the imbalance module is adjusted from the current operating frequency to the target operating frequency.

5. The method according to claim 4, characterized in that, The step of determining the target load in the imbalance module based on the wind turbine frequency offset corresponding to the imbalance module includes: If the frequency deviation of the wind turbine is greater than a preset frequency deviation threshold, the target load in the imbalance module is determined to be the wind turbine. If the fan frequency offset is less than or equal to the frequency offset threshold, the target load in the imbalance module is determined to be the compressor.

6. The method according to claim 4, characterized in that, The step of determining the target operating frequency corresponding to the target load based on the load state parameters corresponding to the other modules besides the imbalance module includes: When the target load is a wind turbine, a second average wind turbine frequency is determined based on the wind turbine frequencies corresponding to the other modules respectively; a second wind turbine frequency imbalance is determined based on the wind turbine frequencies corresponding to the other modules respectively and the second average wind turbine frequency; and a target operating frequency corresponding to the wind turbine is determined based on a preset frequency offset threshold, the second average wind turbine frequency and the second wind turbine frequency imbalance. When the target load is a compressor, a second average compressor frequency is determined based on the compressor frequencies corresponding to the other modules respectively; a second compressor frequency imbalance is determined based on the compressor frequencies corresponding to the other modules respectively and the second average compressor frequency; and a target operating frequency corresponding to the compressor is determined based on a preset frequency offset threshold, the second average compressor frequency, and the second compressor frequency imbalance.

7. The method according to claim 1, characterized in that, The method further includes: If the determined cooling imbalance degree is less than or equal to the cooling imbalance threshold, a module balancing prompt operation will be performed. If the cooling imbalance degree determined by a consecutive preset number of times is greater than the cooling imbalance threshold, a module imbalance prompt operation is performed according to the module control information; wherein, the module control information includes: the unbalanced module controlled each time in the consecutive preset number of times, the load controlled each time, and the operating parameters before and after the control.

8. A balanced control device for a multi-module liquid-cooled unit, characterized in that, include: The data acquisition module is used to collect the refrigeration status parameters corresponding to each module in the multi-module liquid chiller unit; The first determining module is used to determine the actual cooling capacity of each module based on the cooling status parameters corresponding to the module. The second determining module is used to determine the refrigeration imbalance degree corresponding to the multi-module liquid cooling unit based on the actual refrigeration capacity corresponding to each module. The third determining module is used to determine the unbalanced module among the modules based on the cooling imbalance degree and the actual cooling capacity corresponding to each module when the cooling imbalance degree is greater than the preset cooling imbalance threshold. The balancing control module is used to adjust the operating parameters corresponding to the load in the unbalanced module according to the load status parameters corresponding to each module.

9. A multi-module liquid-cooled unit, characterized in that, include: At least one communication interface; At least one bus connected to the at least one communication interface; at least one processor connected to the at least one bus; At least one memory connected to the at least one bus, wherein the processor is configured to execute a balanced control program for a multi-module liquid-cooled unit stored in the memory to implement the balanced control method for a multi-module liquid-cooled unit according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which are executed to implement the balanced control method for the multi-module liquid-cooled unit according to any one of claims 1-7.