Liquid cooling unit control method, system and device and nonvolatile storage medium

Abstract

The invention provides a liquid cooling unit control method, system and device and a nonvolatile storage medium. The liquid cooling unit control method comprises the steps that the working environment temperature value of a liquid cooling unit is obtained; determining a corresponding environment temperature interval according to the environment temperature value; and determining a corresponding adjustment target value according to the environment temperature interval, and adjusting the operation condition of a compressor and / or a fan of the liquid cooling unit according to the adjustment target value. Through the technical scheme provided by the invention, the technical problem that the energy efficiency of an energy storage liquid cooling unit in the prior art is relatively low can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid cooling units, and in particular to a liquid cooling unit control method, system, device and non-volatile storage medium. Background Art

[0002] At present, in order to improve the energy efficiency of energy storage liquid cooling units, common improvement methods include using high-efficiency compressors and increasing the heat exchanger area.

[0003] However, these common energy efficiency improvement methods increase the cost of the unit while improving the unit's energy efficiency. At the same time, the control method of the conventional energy storage liquid cooling unit usually only performs a single adjustment in the frequency adjustment of the compressor, focusing only on the control of the compressor load, while ignoring the joint control with other structural components in the liquid cooling unit, making it impossible for the overall unit to maintain the optimal energy efficiency state. Summary of the invention

[0004] The main purpose of the present invention is to provide a liquid cooling unit control method, system, device and non-volatile storage medium to solve the technical problem of low energy efficiency of energy storage liquid cooling units in the prior art.

[0005] In order to achieve the above object, according to one aspect of the present invention, a liquid cooling unit control method is provided, comprising:

[0006] Get the ambient temperature value of the liquid cooling unit;

[0007] Determine the corresponding ambient temperature range according to the ambient temperature value;

[0008] The corresponding adjustment target value is determined according to the ambient temperature range, and the operation of the compressor and / or fan of the liquid cooling unit is adjusted according to the adjustment target value.

[0009] Further, the adjustment target value includes a target frequency value of a compressor of the liquid cooling unit and / or a target speed value of a fan of the liquid cooling unit; and adjusting the operation of the compressor and / or the fan of the liquid cooling unit according to the adjustment target value includes:

[0010] adjusting the operating frequency of the compressor according to the target frequency value of the compressor; and / or,

[0011] adjusting the speed of the fan according to the target speed value of the fan; and / or,

[0012] The current condensing temperature value is determined according to the target frequency value of the compressor, and the speed of the fan is adjusted according to the current condensing temperature value.

[0013] Furthermore, the adjustment target value includes a target frequency value of a compressor of the liquid cooling unit; and the corresponding adjustment target value is determined according to the ambient temperature range, including:

[0014] Determine the operating frequency range of the compressor according to the ambient temperature range;

[0015] A target frequency value is determined within the operable frequency range of the compressor.

[0016] Further, determining the target frequency value as the adjustment target value within the operable frequency range of the compressor includes:

[0017] Obtain the energy efficiency ratio corresponding to each frequency value within the operable frequency range;

[0018] Compare each energy efficiency ratio with a preset energy efficiency ratio, and obtain a preferred frequency value whose energy efficiency ratio is greater than the preset energy efficiency ratio;

[0019] The target frequency value is determined according to the preferred frequency value.

[0020] Further, determining the adjustment target value according to the preferred frequency value includes:

[0021] In the case where the preferred frequency value is one, determining the preferred frequency value to be a target frequency value; and / or,

[0022] When there are multiple preferred frequency values, obtaining the actual operating frequency value of the compressor;

[0023] The actual operating frequency value is compared with the preferred frequency value greater than the actual operating frequency value among the preferred frequency values ​​to obtain a first preferred frequency value with the smallest difference from the actual operating frequency value; the actual operating frequency value is compared with the preferred frequency value less than the actual operating frequency value among the preferred frequency values ​​to obtain a second preferred frequency value with the smallest difference from the actual operating frequency value;

[0024] When the operating frequency of the compressor needs to be increased, the first preferred frequency value is determined as the target frequency value; when the operating frequency of the compressor needs to be reduced, the second preferred frequency value is determined as the target frequency value.

[0025] Furthermore, the control method further includes:

[0026] Obtain the actual liquid supply temperature value of the liquid cooling unit, and obtain the temperature difference between the actual liquid supply temperature value and the preset liquid supply temperature value;

[0027] Adjust the operating frequency of the compressor according to the temperature difference;

[0028] The temperature difference includes the size of the temperature difference and the rate of change of the temperature difference.

[0029] Furthermore, the operating frequency of the compressor is adjusted according to the temperature difference, including:

[0030] When the temperature difference value is greater than or equal to the preset temperature difference value, and the difference between the temperature difference value and the preset temperature difference value increases and / or the rate of change of the temperature difference value decreases, the operating frequency of the compressor is increased;

[0031] When the temperature difference value is greater than or equal to the preset temperature difference value, and the difference between the temperature difference value and the preset temperature difference value decreases and / or the rate of change of the temperature difference value increases, the operating frequency of the compressor is reduced;

[0032] When the temperature difference is less than the preset temperature difference, the compressor is turned off.

[0033] Furthermore, the control method further includes:

[0034] When T h1 ≤T h <T h2 When the ambient temperature is T h In the first ambient temperature range, the operating frequency range corresponding to the first ambient temperature range is [F min , F max1 ];

[0035] When T h2 ≤T h <T h3 When the ambient temperature is T h In the second ambient temperature range, the operating frequency range corresponding to the second ambient temperature range is [F min , F max2 ];

[0036] When T h3 ≤T h <T h4 When the ambient temperature is T h In the third ambient temperature range, the operating frequency range corresponding to the third ambient temperature range is [F min , F max3 ];

[0037] When T h4 ≤T h <T h5 When the ambient temperature is T h In the fourth ambient temperature range, the operating frequency range corresponding to the fourth ambient temperature range is [F min , F max4 ];

[0038] When T h5 ≤T h <T h6 When the ambient temperature is T hIn the fifth ambient temperature range, the operating frequency range corresponding to the fifth ambient temperature range is [F min , F max5 ];

[0039] Among them, F max1 <F max2 <F max3 <F max4 <F max5 ; T h1 is the first preset ambient temperature value, T h2 is the second preset ambient temperature value, T h3 is the third preset ambient temperature value, T h4 is the fourth preset ambient temperature value, T h5 is the fifth preset ambient temperature value, T h6 It is the sixth preset ambient temperature value.

[0040] Furthermore, the adjustment target value includes a target speed value of a fan of the liquid cooling unit; and the corresponding adjustment target value is determined according to the ambient temperature range, including:

[0041] Obtain the pressure value at the outlet of the compressor of the liquid cooling unit;

[0042] Get the current condensation temperature value T1 corresponding to the pressure value;

[0043] Determine the corresponding target condensation temperature value T0 according to the ambient temperature range;

[0044] Obtain the condensation temperature difference ΔT between the current condensation temperature value T1 and the target condensation temperature value T0, ΔT = T1 - T0;

[0045] The target speed value is determined according to the condensing temperature difference ΔT.

[0046] Further, determining the target speed value as the adjustment target value according to the condensing temperature difference ΔT includes:

[0047] Get the actual speed value of the fan;

[0048] When ΔT ≥ T a1 When , the target speed value is greater than the actual speed value;

[0049] When T b1 ≤ΔT<T a1 When , the target speed value is equal to the actual speed value;

[0050] When ΔT<T b1 When the target speed is smaller than the actual speed.

[0051] Further, making the target speed value greater than the actual speed value includes: when T a1 ≤ΔT<Ta2 When T a2 ≤ΔT<T a3 When T a3 ≤ΔT<T a4 When ΔT≥T a4 When the target speed value is the sum of the actual speed value and the fourth preset speed-up value; wherein the fourth preset speed-up value is greater than the third preset speed-up value, the third preset speed-up value is greater than the second preset speed-up value, and the second preset speed-up value is greater than the first preset speed-up value; and / or,

[0052] Make the target speed value smaller than the actual speed value, including: when T b2 ≤ΔT<T b1 When ΔT<T b2 When the target speed value is the difference between the actual speed value and the second preset deceleration value; wherein the second preset deceleration value is greater than the first preset deceleration value; and / or,

[0053] Making the target speed value greater than the actual speed value includes: making the speed of the fan not exceed the maximum speed value; making the target speed value less than the actual speed value includes: making the speed of the fan not lower than the minimum speed value.

[0054] Furthermore, the adjustment target value includes a target speed value of a fan of the liquid cooling unit; there are at least two fans, and the control method further includes:

[0055] Obtaining target speed values ​​for each fan, comparing the target speed values ​​to obtain a maximum speed target value among at least two target speed values; adjusting the speeds of at least two fans to the maximum speed target value; and / or,

[0056] After the rotation speeds of the at least two fans are made consistent, the speeds of the at least two fans are adjusted simultaneously.

[0057] Furthermore, there are at least two fans, and the control method further includes:

[0058] Obtain the pressure value at the outlet of the compressor of the liquid cooling unit;

[0059] Get the current condensation temperature value corresponding to the pressure value;

[0060] Adjust the number of fans turned on according to the current condensing temperature value.

[0061] Furthermore, the liquid cooling unit further includes a condenser; the fan includes a middle fan arranged toward the middle of the condenser and a side fan located on one side of the middle fan; and the number of fans turned on is adjusted according to the current condensing temperature value, including:

[0062] When T1>T N When the fan is in the middle and side, both the fan and the side fan can operate normally;

[0063] When T1≤T N When the fan in the middle is turned on, make the fan in the middle run normally and turn off the fan in the side;

[0064] Among them, T N is the preset temperature value, and T1 is the current condensing temperature value.

[0065] Furthermore, when the current condensation temperature T1 is T1≤T N The situation changes to T1>T N During the situation, the control method also includes:

[0066] Make the side fans rotate at the minimum speed value and adjust the speed of the middle fans to the minimum speed value;

[0067] After the rotation speeds of the side fans and the middle fans are both at the minimum rotation speed values, the speeds of the middle fans and the side fans are adjusted simultaneously.

[0068] According to another aspect of the present invention, a liquid cooling unit system is provided, which is applicable to the liquid cooling unit control method provided above, and the liquid cooling unit system comprises:

[0069] Compressors and fans;

[0070] The temperature detection component is used to obtain the ambient temperature value of the liquid cooling unit.

[0071] Furthermore, the liquid cooling unit system further includes a pressure detection element arranged at the outlet of the compressor to obtain the pressure value at the outlet of the compressor; and / or,

[0072] The liquid cooling unit system also includes a condenser; the fan is arranged on one side of the condenser, and the air outlet end of the fan is arranged toward the condenser.

[0073] According to another aspect of the present invention, a liquid cooling unit control device is provided, which is used to execute the liquid cooling unit control method provided above, and the liquid cooling unit control device includes:

[0074] An acquisition unit, used to acquire the ambient temperature value of the liquid cooling unit;

[0075] A judgment unit, used to determine a corresponding ambient temperature range according to the ambient temperature value;

[0076] The regulating unit is used to determine the corresponding regulating target value according to the ambient temperature range and to regulate the operation of the compressor and / or fan of the liquid cooling unit according to the regulating target value.

[0077] According to another aspect of the present invention, a nonvolatile storage medium is provided, the nonvolatile storage medium including a stored program, wherein when the program is running, the device where the nonvolatile storage medium is located is controlled to execute the liquid cooling unit control method provided above.

[0078] By applying the technical solution of the present invention, it is possible to determine the ambient temperature interval corresponding to the ambient temperature value by detecting the ambient temperature of the liquid cooling unit, and determine the adjustment target value corresponding to the ambient temperature interval, so as to facilitate adjusting the operation of the compressor and / or fan of the liquid cooling unit according to the adjustment target value, so as to be able to fully adjust the compressor and / or fan adaptively according to the actual operating ambient temperature of the liquid cooling unit, thereby avoiding performance waste and effectively improving the operating energy efficiency of the liquid cooling unit. Therefore, the technical solution of the present invention can solve the technical problem of low energy efficiency of energy storage liquid cooling units in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0079] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0080] Figure 1 A schematic diagram showing the steps of a liquid cooling unit control method provided in accordance with Embodiment 1 of the present invention is shown;

[0081] Figure 2 A schematic structural diagram of a liquid cooling unit system provided according to the second embodiment of the present invention is shown.

[0082] The above drawings include the following reference numerals:

[0083] 10. Compressor;

[0084] 20. Fan; 21. Middle fan; 22. Side fan;

[0085] 30. Temperature detection parts;

[0086] 40. Heat exchanger;

[0087] 50. Condenser;

[0088] 61. first connection part; 62. second connection part; 63. third connection part;

[0089] 70. Pressure testing parts;

[0090] 80. Exhaust temperature detection component;

[0091] 90. Intake air temperature detection component;

[0092] 100. Low voltage switch;

[0093] 110. Filter;

[0094] 120. Electronic expansion valve;

[0095] 130. Liquid reservoir;

[0096] 140, liquid inlet;

[0097] 150. Liquid outlet. DETAILED DESCRIPTION

[0098] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0099] like Figure 1 As shown, embodiment 1 of the present invention provides a liquid cooling unit control method, which includes: obtaining the ambient temperature value of the liquid cooling unit; determining the corresponding ambient temperature range according to the ambient temperature value; determining the corresponding adjustment target value according to the ambient temperature range, and adjusting the operation of the compressor and / or fan of the liquid cooling unit according to the adjustment target value.

[0100] The liquid cooling unit control method provided in the first embodiment of the present invention can determine the ambient temperature range corresponding to the ambient temperature value by detecting the ambient temperature of the liquid cooling unit, and determine the adjustment target value corresponding to the ambient temperature range, so as to facilitate adjusting the operation of the compressor 10 and / or the fan 20 of the liquid cooling unit according to the adjustment target value, so as to be able to fully adjust the compressor 10 and / or the fan 20 adaptively according to the actual operating ambient temperature of the liquid cooling unit, thereby avoiding performance waste and effectively improving the operating energy efficiency of the liquid cooling unit. Therefore, the liquid cooling unit control method provided in this embodiment can solve the technical problem of low energy efficiency of energy storage liquid cooling units in the prior art.

[0101] Specifically, the relationship between the ambient temperature range and the compressor frequency range ensures the efficient operation of the compressor 10 under different temperature conditions. At lower ambient temperatures, the compressor 10 is prevented from maintaining a high frequency when it does not need to operate at a high frequency, thereby reducing unnecessary energy consumption and wear. On the contrary, at higher ambient temperatures, the refrigeration effect under high load demand can be ensured, and the overall energy efficiency of the system is maintained by selecting the optimal energy efficiency frequency point for operation. The adjustment of the speed of the fan 20 also responds to changes in the ambient temperature. When the ambient temperature rises, increasing the speed of the fan 20 can accelerate the air flow, thereby accelerating the heat dissipation, reducing the condensation temperature, and improving the working efficiency of the refrigeration system. On the contrary, when the ambient temperature is low, appropriately reducing the speed of the fan 20 not only reduces the energy consumption of the fan 20, but also maintains the high and low pressure difference of the system, ensuring the stability and energy efficiency of the refrigeration cycle. The joint control of the compressor 10 and the fan 20 enables the operating states of the two at different ambient temperatures to match and optimize each other, avoiding the problems of low system energy efficiency and excessive equipment loss that may exist under a single control strategy. This control strategy can automatically adjust according to real-time environmental conditions, ensuring that the system can operate at the best energy efficiency in a wide range of ambient temperatures, thereby significantly reducing energy consumption while meeting cooling requirements, and improving the economy and environmental protection of the entire energy storage liquid cooling unit. In addition, by preventing the compressor 10 and the fan 20 from operating at inefficient points, the service life of the equipment is extended, maintenance costs are further reduced, and the reliability and stability of the system are enhanced.

[0102] Specifically, the liquid cooling unit applicable to this embodiment is an integrated unit, which is arranged in a cabinet and placed outdoors. Specifically, the ambient temperature value of the liquid cooling unit is the ambient temperature value of the outdoor environment where the liquid cooling unit is located.

[0103] Specifically, the adjustment target value includes the target frequency value of the compressor 10 of the liquid cooling unit. The method for adjusting the operation of the compressor 10 of the liquid cooling unit according to the adjustment target value includes: adjusting the operating frequency of the compressor 10 according to the target frequency value of the compressor 10. With such a method, this adjustment mechanism ensures that the compressor 10 operates at an appropriate frequency, avoiding energy efficiency degradation and equipment protection problems caused by excessively high or low frequencies. The compressor 10 operates at the target frequency value point, which can maximize the refrigeration efficiency while reducing energy consumption, especially when the ambient temperature changes, it can adapt quickly and maintain a high energy efficiency ratio. The dynamic adjustment of the operating frequency of the compressor 10 can maintain the stable operation of the system according to the actual refrigeration demand and environmental conditions, and avoid the mismatch between the cooling capacity and the heat load.

[0104] Specifically, the adjustment target value includes a target speed value of the fan 20 of the liquid cooling unit. The method for adjusting the operation of the fan 20 of the liquid cooling unit according to the adjustment target value includes: adjusting the speed of the fan 20 according to the target speed value of the fan 20. With such a method, efficient management of the heat dissipation process of the liquid cooling unit is achieved by determining its target speed value and adjusting the speed accordingly. The automatic adjustment of the speed of the fan 20 reduces unnecessary energy consumption and improves the overall energy efficiency of the system. The adjustment of the speed of the fan 20 directly responds to changes in the ambient temperature, ensuring that the fan 20 can effectively dissipate heat under different ambient temperatures and heat loads, maintain the condensation temperature within the target range, and ensure the efficiency of the refrigeration cycle. In addition, when high-intensity heat dissipation is not required, the target speed value can also be adjusted to reduce the fan speed, thereby reducing noise and improving the comfort of the operating environment.

[0105] Specifically, the adjustment target value includes the target frequency value of the compressor 10 of the liquid cooling unit and the target speed value of the fan 20 of the liquid cooling unit. The method for adjusting the operating conditions of the compressor 10 and the fan 20 of the liquid cooling unit according to the adjustment target value includes: determining the current condensing temperature value according to the target frequency value of the compressor 10, and adjusting the speed of the fan 20 according to the current condensing temperature value. By adopting such a method, the operating efficiency and economy of the liquid cooling unit are further improved, the operating states of the compressor 10 and the fan 20 match each other, and after the frequency of the compressor 10 is adjusted, the speed of the fan 20 is dynamically adjusted by the feedback condensing temperature value, so as to achieve the coordinated optimization of the refrigeration system and the heat dissipation system and improve the overall energy efficiency. In this way, when the ambient temperature changes rapidly, the adjustment of the frequency of the compressor 10 can respond quickly, and the immediate response of the speed of the fan 20 ensures the stability of the condensing temperature and improves the system's adaptability to environmental changes. This joint adjustment mechanism can comprehensively consider the operating efficiency of the compressor 10 and the fan 20, maximize the cooling effect by adjusting the frequency of the compressor 10, and at the same time ensure the heat dissipation efficiency by adjusting the speed of the fan 20, thereby achieving a significant improvement in energy efficiency overall, reducing operating costs, and extending the service life of the unit.

[0106] Specifically, the method for determining the current condensing temperature value according to the target frequency value of the compressor 10 includes: setting the operating frequency of the compressor 10 to the target frequency value; obtaining the pressure value at the outlet of the compressor 10; and obtaining the current condensing temperature value corresponding to the pressure value. By adopting such a method, it is easy to realize the joint control of the compressor 10 and the fan 20, thereby improving the operating energy efficiency of the liquid cooling unit.

[0107] In the present embodiment, the adjustment target value includes the target frequency value of the compressor 10 of the liquid cooling unit. The method for determining the corresponding adjustment target value according to the ambient temperature range includes: determining the operable frequency range of the compressor 10 according to the ambient temperature range; determining the target frequency value within the operable frequency range of the compressor 10. By adopting such a method, by setting a reasonable operable frequency range of the compressor 10 corresponding to different ambient temperature ranges, the situation of protective shutdown during the operation of the compressor 10 can be greatly reduced, and the service life of the compressor 10 can be further extended, while taking into account the refrigeration effect of the energy storage liquid cooling unit. In addition, the determined operable frequency range of the compressor 10 takes into account the performance characteristics and safe operation requirements of the compressor 10 under different ambient temperatures, avoids the protective shutdown or abnormal state that may be caused by the operation of the compressor 10 at extreme frequencies, and enhances the stability and reliability of the system.

[0108] Specifically, after the main control board of the energy storage liquid cooling unit issues a start-up command, the compressor 10 first runs at the initial frequency for a preset time, and then determines the operating frequency range of the compressor 10 according to the ambient temperature, giving priority to ensuring that the compressor 10 will not be protected or abnormal due to excessively high or low operating frequency. Specifically, the preset time is 2 minutes.

[0109] Specifically, the method for determining the target frequency value as the adjustment target value within the operable frequency range of the compressor 10 includes: obtaining the energy efficiency ratio corresponding to each frequency value within the operable frequency range; comparing each energy efficiency ratio with the preset energy efficiency ratio, obtaining the preferred frequency value whose energy efficiency ratio is greater than the preset energy efficiency ratio; and determining the target frequency value according to the preferred frequency value. With this method, since the energy efficiency of the compressor 10 is different at different operating frequencies, the conventional frequency control method of the variable frequency compressor 10 is to allow the compressor 10 to freely adjust the frequency according to the load change within the operable range. This method cannot make the compressor 10 operate at the frequency point with the highest energy efficiency for a long time. In this embodiment, by selecting the preferred frequency value from the operable frequency range of the compressor 10 under each ambient temperature range, it is possible to ensure that the load demand is met while improving the unit's operating energy efficiency while ensuring that the operating frequency of the compressor 10 is within the operable range.

[0110] Specifically, the method for determining the adjustment target value according to the preferred frequency value includes: when there is only one preferred frequency value, determining the preferred frequency value as the target frequency value. In this way, there is no need for comparison and selection, which can improve the convenience of adjusting the operating frequency of the compressor 10.

[0111] Specifically, the method for determining the adjustment target value according to the preferred frequency value includes: when there are multiple preferred frequency values, obtaining the actual operating frequency value of the compressor; comparing the actual operating frequency value with the preferred frequency value greater than the actual operating frequency value among the preferred frequency values ​​to obtain the first preferred frequency value with the smallest difference from the actual operating frequency value; comparing the actual operating frequency value with the preferred frequency value less than the actual operating frequency value among the preferred frequency values ​​to obtain the second preferred frequency value with the smallest difference from the actual operating frequency value; when it is necessary to increase the operating frequency of the compressor, determining the first preferred frequency value as the target frequency value; when it is necessary to reduce the operating frequency of the compressor, determining the second preferred frequency value as the target frequency value. By adopting such a method, it is convenient to select the most suitable target frequency value among multiple preferred frequency values ​​to reduce frequency modulation consumption and improve operating energy efficiency. When it is necessary to adjust the operating frequency of the compressor 10, whether it is increasing or decreasing the frequency, the method can quickly find the preferred frequency value closest to the current operating frequency, avoid the system impact caused by the sudden and large frequency adjustment, realize the smooth transition of frequency regulation, and enhance the stability and comfort of the system.

[0112] Specifically, the energy efficiency ratio is the ratio of the cooling capacity to the operating power. Specifically, there are at least four preferred frequency values ​​within each operable frequency range. In this way, the number of selectable preferred frequency values ​​can be guaranteed, so that the actual operating frequency can be adjusted to a preferred frequency value close thereto. Specifically, when the operating frequency of the compressor 10 is at the preferred frequency value, the operating energy efficiency improvement rate of the liquid cooling unit is greater than or equal to 5%.

[0113] In this embodiment, the control method also includes: obtaining the actual liquid supply temperature value of the liquid cooling unit, obtaining the temperature difference between the actual liquid supply temperature value and the preset liquid supply temperature value; adjusting the operating frequency of the compressor 10 according to the temperature difference value; wherein the temperature difference value includes the size of the temperature difference value and the rate of change of the temperature difference value. Specifically, the temperature difference value is the absolute value of the difference between the actual liquid supply temperature value and the preset liquid supply temperature value. With such a method, it is possible to determine whether the frequency of the compressor 10 needs to be increased or decreased based on the temperature difference between the set liquid supply temperature and the actual liquid supply temperature and the rate of change of the temperature difference, thereby ensuring that the unit can meet the required cooling capacity and the cooling effect of the liquid cooling unit. Specifically, the actual liquid supply temperature value of the cooling unit refers to the liquid temperature at the liquid outlet 150 of the liquid cooling unit.

[0114] Specifically, the method for adjusting the operating frequency of the compressor 10 according to the temperature difference includes: when the temperature difference is greater than or equal to the preset temperature difference, and the difference between the temperature difference and the preset temperature difference increases and / or the rate of change of the temperature difference decreases, the operating frequency of the compressor 10 is increased; when the temperature difference is greater than or equal to the preset temperature difference, and the difference between the temperature difference and the preset temperature difference decreases and / or the rate of change of the temperature difference increases, the operating frequency of the compressor 10 is reduced; when the temperature difference is less than the preset temperature difference, the compressor 10 is turned off. With such a method, the operating frequency of the compressor 10 can be accurately adjusted according to the size of the temperature difference and the rate of change of the temperature difference, thereby reducing energy consumption while ensuring the cooling capacity, and further improving the energy efficiency of the liquid cooling unit.

[0115] Specifically, the preset temperature difference value may be 2°C.

[0116] In this embodiment, the control method further includes: when T h1 ≤T h <T h2 When the ambient temperature is T h In the first ambient temperature range, the operating frequency range corresponding to the first ambient temperature range is [F min , F max1 ]; when T h2 ≤T h <T h3 When the ambient temperature is T h In the second ambient temperature range, the operating frequency range corresponding to the second ambient temperature range is [F min , F max2 ]; when T h3 ≤T h <T h4 When the ambient temperature is T h In the third ambient temperature range, the operating frequency range corresponding to the third ambient temperature range is [F min , F max3 ]; when T h4 ≤T h <T h5 When the ambient temperature is T h In the fourth ambient temperature range, the operating frequency range corresponding to the fourth ambient temperature range is [F min , F max4 ]; when T h5 ≤T h <T h6 When the ambient temperature is T h In the fifth ambient temperature range, the operating frequency range corresponding to the fifth ambient temperature range is [F min , F max5 ]; among them, F max1 <F max2<F max3 <F max4 <F max5 ; T h1 is the first preset ambient temperature value, T h2 is the second preset ambient temperature value, T h3 is the third preset ambient temperature value, T h4 is the fourth preset ambient temperature value, T h5 is the fifth preset ambient temperature value, T h6 is the sixth preset ambient temperature value. Specifically, the working ambient temperature of the liquid cooling unit in this embodiment is usually between -15°C and 30°C (including -15°C and 30°C). By setting five ambient temperature intervals, this method can better adapt to the refrigeration needs under different ambient temperatures by setting the operating frequency range of the compressor 10 in sections, and further can better adapt the operating frequency of the compressor 10 to the ambient temperature, so as to improve the energy efficiency ratio of the liquid cooling unit.

[0117] Specifically, when -15℃≤T h When the ambient temperature is less than 9℃, the ambient temperature value T h In the first ambient temperature range, the operating frequency range corresponding to the first ambient temperature range is [F min , F max1 ]; When 9℃≤T h When the ambient temperature is less than 30℃, the ambient temperature value T h In the second ambient temperature range, the operating frequency range corresponding to the second ambient temperature range is [F min , F max2 ]; When 30℃≤T h When the ambient temperature is less than 40℃, the ambient temperature value T h In the third ambient temperature range, the operating frequency range corresponding to the third ambient temperature range is [F min , F max3 ]; When 40℃≤T h When the ambient temperature is less than 49℃, the ambient temperature value T h In the fourth ambient temperature range, the operating frequency range corresponding to the fourth ambient temperature range is [F min , F max4 ]; When 49℃≤T h When the ambient temperature is less than 55℃, the ambient temperature value T h In the fifth ambient temperature range, the operating frequency range corresponding to the fifth ambient temperature range is [F min , F max5 ]; among them, F max1 <F max2 <F max3 <F max4 <F max5With this method, since the higher the ambient temperature, the greater the impact on the cooling effect of the liquid cooling unit, the cooling effect of the liquid cooling unit can be better guaranteed by setting such five ambient temperature intervals.

[0118] In this embodiment, the adjustment target value includes the target speed value of the fan 20 of the liquid cooling unit. The method for determining the corresponding adjustment target value according to the ambient temperature range includes: obtaining the pressure value at the outlet of the compressor 10 of the liquid cooling unit; obtaining the current condensation temperature value T1 corresponding to the pressure value; determining the corresponding target condensation temperature value T0 according to the ambient temperature range; obtaining the condensation temperature difference ΔT between the current condensation temperature value T1 and the target condensation temperature value T0, ΔT = T1-T0; determining the target speed value according to the condensation temperature difference ΔT. With such a method, since the fan 20 in the conventional energy storage liquid cooling unit is usually set to three speeds of high, medium and low, the adjustment of the fan 20 is relatively simple and difficult to adapt to changes in ambient temperature. Such a setting in this embodiment enables the fan 20 to adjust the speed accordingly according to changes in ambient temperature, thereby avoiding power waste and further improving the energy efficiency of the liquid cooling unit.

[0119] Specifically, there are multiple ambient temperature intervals and multiple target condensing temperature values, and the multiple ambient temperature intervals and the multiple target condensing temperature values ​​correspond one to one.

[0120] Specifically, the method for determining the target speed value as the adjustment target value according to the condensing temperature difference ΔT includes: obtaining the actual speed value of the fan 20; when ΔT≥T a1 When T b1 ≤ΔT<T a1 When ΔT<T b1 When ΔT≥T a1 When T b1 ≤ΔT<T a1 When ΔT<T b1 , the speed of the fan 20 is reduced. This setting can directly adjust the speed of the fan 20 according to the condensing temperature, and can quickly intervene in the operation status of the unit. When the external ambient temperature is high, the current condensing temperature value of the unit increases, and the speed of the fan 20 is increased, so that the current condensing temperature value can be reduced. At this time, the reduction of the current condensing temperature value will improve the energy efficiency of the refrigeration system; when the external ambient temperature is low, the current condensing temperature value of the unit is reduced, and the high and low pressure difference is small. By reducing the speed of the fan 20, it can be ensured that the high and low pressure difference meets the needs of the operation of the unit refrigeration system. The reduction of the speed of the fan 20 will also reduce the power, further improving the energy efficiency.

[0121] Specifically, the method of making the target speed value greater than the actual speed value includes: when T a1 ≤ΔT<T a2 When T a2 ≤ΔT<T a3 When T a3 ≤ΔT<T a4 When ΔT≥T a4 , the target speed value is the sum of the actual speed value and the fourth preset speed-up value; wherein the fourth preset speed-up value is greater than the third preset speed-up value, the third preset speed-up value is greater than the second preset speed-up value, and the second preset speed-up value is greater than the first preset speed-up value. With such a method, the speed of the fan 20 can be directly adjusted according to the condensing temperature, thereby quickly intervening in the operating state of the unit. When the external ambient temperature is high, the current condensing temperature value of the unit increases, and increasing the speed of the fan 20 can reduce the current condensing temperature value, thereby improving the energy efficiency of the unit's refrigeration system. When the difference ΔT between the condensing temperature and the target temperature is in different ranges, the method will adjust the speed of the fan 20 according to the preset speed-up value T a1 、T a2 、T a3 and T a4 , intelligently adjust the speed of the fan 20. This ensures that the adjustment of the speed of the fan 20 can accurately match the needs of the refrigeration system, quickly respond to changes in the condensing temperature, and maintain the thermal balance of the system. Especially when the ambient temperature changes sharply, it can quickly adjust to an appropriate speed to prevent the condensing temperature from deviating from the set value.

[0122] Specifically, the method of making the target speed value smaller than the actual speed value includes: when T b2 ≤ΔT<T b1 When ΔT<T b2 When the target speed value is the difference between the actual speed value and the second preset speed reduction value, wherein the second preset speed reduction value is greater than the first preset speed reduction value. With this method, when the ambient temperature is low, the current condensing temperature value of the unit is reduced, resulting in a smaller high and low pressure difference. By reducing the speed of the fan 20, it can be ensured that the high and low pressure difference meets the needs of the unit's refrigeration system operation, and the reduction in the speed of the fan 20 can bring about a decrease in power, thereby further improving the energy efficiency of the liquid cooling unit.

[0123] Specifically, for the normal operation of the fan 20, the method of making the target speed value greater than the actual speed value includes: making the speed of the fan not exceed the maximum speed value. The method of making the target speed value less than the actual speed value includes: making the speed of the fan not less than the minimum speed value. Specifically, the minimum speed value of the fan 20 is confirmed by a jumper cap.

[0124] Specifically, when ΔT<-2℃, the target speed value is the difference between the actual speed value and the second preset deceleration value; when -2℃≤ΔT<-1℃, the target speed value is the difference between the actual speed value and the first preset deceleration value; when -1℃≤ΔT<0℃, the target speed value is equal to the actual speed value; when 0℃≤ΔT<1℃, the target speed value is the sum of the actual speed value and the first preset speed increase value; when 1℃≤ΔT<3℃, the target speed value is the sum of the actual speed value and the second preset speed increase value; when 3℃≤ΔT<5℃, the target speed value is the sum of the actual speed value and the third preset speed increase value; when ΔT≥5℃, the target speed value is the sum of the actual speed value and the fourth preset speed increase value. Specifically, the second preset deceleration value is greater than 0rpm and less than or equal to 100rpm. The first preset deceleration value is greater than 0rpm and less than or equal to 50rpm. The first preset speed increase value is greater than 0rpm and less than or equal to 50rpm. The second preset speed-up value is greater than 0 rpm and less than or equal to 100 rpm. The third preset speed-up value is greater than or equal to 50 rpm and less than or equal to 200 rpm. The fourth preset speed-up value is greater than or equal to 100 rpm and less than or equal to 300 rpm.

[0125] In this embodiment, the adjustment target value includes the target speed value of the fan 20 of the liquid cooling unit; there are at least two fans 20, and the control method also includes: obtaining the target speed value of each fan 20, comparing each target speed value to obtain the maximum speed target value of at least two target speed values; adjusting the speed of at least two fans 20 to the maximum speed target value. By adopting such a method, when there are at least two fans 20, the speed of at least two fans 20 can be synchronously increased or decreased according to the maximum speed target value, so as to ensure the effective intervention of the fan 20 on the current condensing temperature value, thereby further improving the energy efficiency of the liquid cooling unit. The uniform adjustment of the speed of the fan 20 reduces the system instability that may be caused by the speed difference between different fans 20, such as uneven airflow, local overheating and other problems. All fans 20 operate at the same maximum speed target value, which can ensure the uniformity and consistency of the surrounding air flow, maintain the thermal balance of the system, and enhance the stability and reliability of the system.

[0126] Specifically, the adjustment target value includes the target speed value of the fan 20 of the liquid cooling unit; there are at least two fans 20, and the control method also includes: after the speeds of at least two fans 20 are consistent, the speeds of at least two fans 20 are adjusted simultaneously. By adopting such a method, when there are at least two fans 20, the speeds of at least two fans 20 can be increased or decreased synchronously, which can avoid the uneven airflow caused by the difference in the speeds of different fans 20, thereby ensuring the effective intervention of the fan 20 on the current condensing temperature value, thereby further improving the energy efficiency of the liquid cooling unit. And unified speed regulation can avoid system vibration or noise problems caused by adjusting the speed of a certain fan 20 alone, ensure the stability and low noise of the system operation, and improve the comfort of the working environment. By treating multiple fans 20 as a unified control unit, the complexity of the control system is simplified, the requirements for the performance of the control system are reduced, the adjustment of the speed of the fan 20 is easier to achieve, the control error is reduced, and the controllability and reliability of the system are improved.

[0127] Specifically, there are at least two fans 20, and the control method further includes: obtaining the pressure value at the outlet of the compressor 10 of the liquid cooling unit; obtaining the current condensing temperature value corresponding to the pressure value; and adjusting the number of fans 20 to be turned on according to the current condensing temperature value. By adopting such a method, the number of fans 20 to be turned on can be adjusted according to the current condensing temperature value, thereby improving the adaptability between the number of fans 20 to be turned on and the ambient temperature, thereby further improving the energy efficiency of the liquid cooling unit.

[0128] In this embodiment, the liquid cooling unit further includes a condenser 50. The fan 20 includes a middle fan 21 disposed toward the middle of the condenser 50 and a side fan 22 located on one side of the middle fan 21. The method for adjusting the number of fans 20 to be turned on according to the current condensing temperature value includes: when T1>T N When T1≤T N When T N is the preset temperature value, and T1 is the current condensing temperature value. With this method, when the current condensing temperature value is less than or equal to the preset temperature value, only the middle fan 21 is turned on. Since the current condensing temperature value is not high at this time, this can ensure the cooling effect and save energy. When the current condensing temperature value is greater than the preset temperature value, the middle fan 21 and the side fan 22 are turned on at the same time, thereby effectively reducing the current condensing temperature value.

[0129] Specifically, T N =20℃.

[0130] Specifically, when the current condensation temperature T1 is T1≤T N The situation changes to T1>T NIn the process of the situation, the control method also includes: making the side fan 22 rotate at the minimum speed value and adjusting the speed of the middle fan 21 to the minimum speed value; after the speeds of the side fan 22 and the middle fan 21 are at the minimum speed value, the speeds of the middle fan 21 and the side fan 22 are adjusted at the same time. With this method, the speeds of the middle fan 21 and the side fan 22 can be increased or decreased synchronously, so as to ensure the effective intervention of the fan 20 on the current condensing temperature value, thereby further improving the energy efficiency of the liquid cooling unit. The coordinated speed regulation of the side fan 22 and the middle fan 21 ensures the uniformity of the airflow distribution inside the entire system, enhances the heat dissipation effect, and improves the overall heat exchange efficiency of the system. This collaborative working mode is particularly important when the condensing temperature changes, and can quickly restore the thermal equilibrium state of the system.

[0131] like Figure 2 As shown, embodiment 2 of the present invention provides a liquid cooling unit system, which is applicable to the liquid cooling unit control method provided in embodiment 1. The liquid cooling unit system includes a compressor 10, a fan 20 and a temperature detection component 30. The temperature detection component 30 is used to obtain the ambient temperature value of the liquid cooling unit.

[0132] By adopting the liquid cooling unit system provided by the second embodiment of the present invention, the ambient temperature of the liquid cooling unit can be detected by the temperature detection element 30, the ambient temperature interval corresponding to the ambient temperature value can be determined, and the adjustment target value corresponding to the ambient temperature interval can be determined, so as to facilitate the adjustment of the operation of the compressor 10 and / or the fan 20 of the liquid cooling unit according to the adjustment target value, so that the compressor 10 and / or the fan 20 can be adaptively adjusted according to the actual working ambient temperature of the liquid cooling unit, so as to avoid the situation of performance waste, thereby effectively improving the operation energy efficiency of the liquid cooling unit. The system dynamically adjusts the operating parameters of the compressor 10 and the fan 20 according to the ambient temperature value, which can avoid the problem of energy efficiency reduction caused by the traditional fixed control strategy when the ambient temperature changes. At a lower ambient temperature, the system can reduce the compressor frequency and the fan speed to reduce energy consumption; at a higher ambient temperature, the system can increase the compressor frequency and the fan speed to ensure efficient cooling effect, thereby improving the system energy efficiency as a whole. Therefore, the liquid cooling unit system provided by this embodiment can solve the technical problem of low energy efficiency of energy storage liquid cooling units in the prior art.

[0133] Specifically, the liquid cooling unit system further includes a pressure detection member 70 disposed at the outlet of the compressor 10 to obtain the pressure value at the outlet of the compressor 10. In this way, it is convenient to detect the pressure at the outlet of the compressor 10 by setting the pressure detection member 70. Specifically, the pressure detection member 70 is a high-pressure pressure sensor.

[0134] Specifically, the liquid cooling unit system also includes a condenser 50. The fan 20 is arranged on one side of the condenser 50, and the air outlet end of the fan 20 is arranged toward the condenser 50. With such a structural arrangement, it is possible to facilitate the cooling treatment of the condenser 50 by the fan 20. Directly aligning the air outlet end of the fan 20 with the condenser 50 can ensure that the airflow generated by the fan directly acts on the heat dissipation surface of the condenser 50, improve the heat exchange efficiency between the air and the condenser 50, thereby more effectively reducing the condensation temperature and improving the overall refrigeration effect of the liquid cooling unit. Specifically, the condenser 50 can be a microchannel condenser. Specifically, the fan 20 includes a central fan 21 and a side fan 22, and the central fan 21 is arranged at a position corresponding to the middle of the condenser 50. The side fan 22 is arranged on the side of the central fan 21. Specifically, there are two side fans 22, and the two side fans 22 are respectively located on both sides of the central fan 21.

[0135] Specifically, the liquid cooling unit system also includes a heat exchanger 40. The heat exchanger 40 is connected to the compressor 10 through a first connection part 61, the compressor 10 is connected to the condenser 50 through a second connection part 62, and the condenser 50 is connected to the heat exchanger 40 through a third connection part 63. Specifically, the heat exchanger 40 can be a plate heat exchanger. Specifically, the temperature detection member 30 is arranged on the third connection part 63 and is located on the side of the third connection part 63 close to the condenser 50. Specifically, the liquid cooling unit system also includes an exhaust temperature detection member 80 and an intake temperature detection member 90, the exhaust temperature detection member 80 is arranged on the second connection part 62 to detect the exhaust temperature of the compressor 10, and the intake temperature detection member 90 is arranged on the first connection part 61 to detect the intake temperature of the compressor 10. Specifically, the liquid cooling unit system also includes a filter 110, a low pressure switch 100 and an electronic expansion valve 120, and the filter 110 is arranged on the third connection part 63 to filter out impurities and particulate matter in the liquid cooling unit system. The low pressure switch 100 is arranged on the first connection part 61 to prevent the compressor 10 from being damaged under too low pressure. The electronic expansion valve 120 is arranged on the third connection part 63 to adjust the liquid output of the liquid cooling unit system. Specifically, the liquid cooling unit system also includes a liquid reservoir 130, a liquid inlet 140 and a liquid outlet 150. The liquid reservoir 130 is arranged on the third connection part 63 to store the coolant. The liquid inlet 140 and the liquid outlet 150 are both connected to the heat exchanger 40 so that the coolant enters the heat exchanger 40 or flows out of the heat exchanger 40.

[0136] Embodiment three of the present invention provides a liquid cooling unit control device, which is used to execute the liquid cooling unit control method provided in embodiment one. The liquid cooling unit control device includes an acquisition unit, a judgment unit and an adjustment unit. The acquisition unit is used to acquire the ambient temperature value of the working environment of the liquid cooling unit, the judgment unit is used to determine the corresponding ambient temperature range according to the ambient temperature value, and the adjustment unit is used to determine the corresponding adjustment target value according to the ambient temperature range and adjust the operation of the compressor and / or fan of the liquid cooling unit according to the adjustment target value.

[0137] Embodiment 4 of the present invention provides a non-volatile storage medium, the non-volatile storage medium includes a stored program, wherein when the program is running, the device where the non-volatile storage medium is located is controlled to execute the liquid cooling unit control method provided in embodiment 1.

[0138] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: through the joint control of loads such as compressors and fans, the unit is ensured to be in the optimal energy efficiency state, effectively improving the energy efficiency ratio of the energy storage liquid cooling unit.

[0139] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0140] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0141] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0142] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0143] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0144] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A liquid cooling unit control method, characterized in that: include: Get the ambient temperature value of the liquid cooling unit; Determine a corresponding ambient temperature interval according to the ambient temperature value; A corresponding adjustment target value is determined according to the ambient temperature range, and the operation of the compressor and / or fan of the liquid cooling unit is adjusted according to the adjustment target value.

2. The control method according to claim 1, characterized in that: The adjustment target value includes a target frequency value of a compressor of the liquid cooling unit and / or a target speed value of a fan of the liquid cooling unit; The step of adjusting the operation of the compressor and / or fan of the liquid cooling unit according to the adjustment target value includes: adjusting the operating frequency of the compressor according to the target frequency value of the compressor; and / or, adjusting the speed of the fan according to the target speed value of the fan; and / or, A current condensing temperature value is determined according to a target frequency value of the compressor, and a rotation speed of the fan is adjusted according to the current condensing temperature value.

3. The control method according to claim 1, characterized in that: The adjustment target value includes a target frequency value of a compressor of the liquid cooling unit; and determining the corresponding adjustment target value according to the ambient temperature range includes: Determining an operable frequency range of the compressor according to the ambient temperature range; The target frequency value is determined within an operable frequency range of the compressor.

4. The control method according to claim 3, characterized in that: Determining the target frequency value as the adjustment target value within the operable frequency range of the compressor includes: Obtaining energy efficiency ratios corresponding to each frequency value within the operable frequency range; Compare each of the energy efficiency ratios with a preset energy efficiency ratio, and obtain a preferred frequency value at which the energy efficiency ratio is greater than the preset energy efficiency ratio; The target frequency value is determined according to the preferred frequency value.

5. The control method according to claim 4, characterized in that: The determining the adjustment target value according to the preferred frequency value comprises: In the case where the preferred frequency value is one, determining the preferred frequency value to be the target frequency value; and / or, In case that there are multiple preferred frequency values, obtaining the actual operating frequency value of the compressor; The actual operating frequency value is compared with the preferred frequency value greater than the actual operating frequency value among the preferred frequency values ​​to obtain a first preferred frequency value having the smallest difference with the actual operating frequency value; the actual operating frequency value is compared with the preferred frequency value less than the actual operating frequency value among the preferred frequency values ​​to obtain a second preferred frequency value having the smallest difference with the actual operating frequency value; When the operating frequency of the compressor needs to be increased, the first preferred frequency value is determined as the target frequency value; when the operating frequency of the compressor needs to be reduced, the second preferred frequency value is determined as the target frequency value.

6. The control method according to claim 1, characterized in that: The control method further comprises: Obtaining an actual liquid supply temperature value of the liquid cooling unit, and obtaining a temperature difference between the actual liquid supply temperature value and a preset liquid supply temperature value; adjusting the operating frequency of the compressor according to the temperature difference; The temperature difference condition includes the size of the temperature difference and the rate of change of the temperature difference.

7. The control method according to claim 6, characterized in that: The step of adjusting the operating frequency of the compressor according to the temperature difference value includes: When the temperature difference value is greater than or equal to a preset temperature difference value, and the difference between the temperature difference value and the preset temperature difference value increases and / or the rate of change of the temperature difference value decreases, increasing the operating frequency of the compressor; When the temperature difference value is greater than or equal to the preset temperature difference value, and the difference between the temperature difference value and the preset temperature difference value decreases and / or the rate of change of the temperature difference value increases, the operating frequency of the compressor is reduced; When the temperature difference is less than the preset temperature difference, the compressor is turned off.

8. The control method according to claim 3, characterized in that: The control method further comprises: When T h1 ≤T h <T h2 When the ambient temperature value T h In the first ambient temperature range, the operating frequency range corresponding to the first ambient temperature range is [F min , F max1 ]; When T h2 ≤T h <T h3 When the ambient temperature value T h In the second ambient temperature range, the operating frequency range corresponding to the second ambient temperature range is [F min , F max2 ]; When T h3 ≤T h <T h4 When the ambient temperature value T h In the third ambient temperature range, the operable frequency range corresponding to the third ambient temperature range is [F min , F max3 ]; When T h4 ≤T h <T h5 When the ambient temperature value T h In the fourth ambient temperature range, the operable frequency range corresponding to the fourth ambient temperature range is [F min , F max4 ]; When T h5 ≤T h <T h6 When the ambient temperature value T h In the fifth ambient temperature interval, the operable frequency range corresponding to the fifth ambient temperature interval is [F min , F max5 ]; Among them, F max1 <F max2 <F max3 <F max4 <F max5 ; T h1 is the first preset ambient temperature value, T h2 is the second preset ambient temperature value, T h3 is the third preset ambient temperature value, T h4 is the fourth preset ambient temperature value, T h5 is the fifth preset ambient temperature value, T h6 It is the sixth preset ambient temperature value.

9. The control method according to claim 1, characterized in that: The adjustment target value includes a target speed value of a fan of the liquid cooling unit; and determining the corresponding adjustment target value according to the ambient temperature range includes: Obtaining a pressure value at an outlet of a compressor of the liquid cooling unit; Obtaining a current condensation temperature value T1 corresponding to the pressure value; Determine the corresponding target condensation temperature value T0 according to the ambient temperature range; Obtain the condensation temperature difference ΔT between the current condensation temperature value T1 and the target condensation temperature value T0, Δ T = T1 - T0; The target speed value is determined according to the condensing temperature difference ΔT.

10. The control method according to claim 9, characterized in that: The step of determining the target speed value as the adjustment target value according to the condensing temperature difference ΔT comprises: Obtaining an actual rotation speed value of the fan; When ΔT ≥ T a1 When the target speed value is greater than the actual speed value; When T b1 ≤ΔT<T a1 When , the target speed value is made equal to the actual speed value; When ΔT<T b1 , the target speed value is made smaller than the actual speed value.

11. The control method according to claim 10, characterized in that: The step of making the target speed value greater than the actual speed value comprises: when T a1 ≤ΔT<T a2 When T a2 ≤ΔT<T a3 When T a3 ≤ΔT<T a4 When ΔT≥T a4 When the target speed value is set to the sum of the actual speed value and a fourth preset speed-up value; wherein the fourth preset speed-up value is greater than the third preset speed-up value, the third preset speed-up value is greater than the second preset speed-up value, and the second preset speed-up value is greater than the first preset speed-up value; and / or, The step of making the target speed value smaller than the actual speed value comprises: when T b2 ≤ΔT<T b1 When ΔT<T b2 When the target speed value is set to be the difference between the actual speed value and the second preset deceleration value; wherein the second preset deceleration value is greater than the first preset deceleration value; and / or, Making the target speed value greater than the actual speed value includes: making the speed of the fan not exceed a maximum speed value; making the target speed value less than the actual speed value includes: making the speed of the fan not lower than a minimum speed value.

12. The control method according to claim 1, characterized in that: The adjustment target value includes a target speed value of a fan of the liquid cooling unit; There are at least two fans, and the control method further includes: Obtaining target speed values ​​of each of the fans, comparing the target speed values ​​to obtain a maximum speed target value among at least two of the target speed values; adjusting the speeds of at least two of the fans to the maximum speed target value; and / or, After the rotational speeds of at least two fans are made consistent, the speeds of at least two fans are adjusted simultaneously.

13. The control method according to claim 1, characterized in that: There are at least two fans, and the control method further includes: Obtaining a pressure value at an outlet of a compressor of the liquid cooling unit; Obtaining a current condensation temperature value corresponding to the pressure value; The number of fans turned on is adjusted according to the current condensing temperature value.

14. The control method according to claim 13, characterized in that: The liquid cooling unit also includes a condenser; the fan includes a middle fan arranged toward the middle of the condenser and a side fan located on one side of the middle fan; The step of adjusting the number of fans to be turned on according to the current condensing temperature value includes: When T1>T N When the central fan and the side fan are both operated normally; When T1≤T N When the central fan is turned off, the central fan is operated normally and the side fan is turned off; Among them, T N is the preset temperature value, and T1 is the current condensing temperature value.

15. The control method according to claim 14, characterized in that: At the current condensing temperature value T1, T1≤T N The situation changes to T1>T N In the process of the situation, the control method further includes: The side fans are rotated at a minimum speed value and the speed of the middle fans is adjusted to the minimum speed value; After the rotation speeds of the side fans and the middle fan are both at the minimum rotation speed value, the speeds of the middle fan and the side fans are adjusted simultaneously.

16. A liquid cooling unit system, characterized in that: The liquid cooling unit control method according to any one of claims 1 to 15, wherein the liquid cooling unit system comprises: A compressor (10) and a fan (20); The temperature detection element (30) is used to obtain the ambient temperature value of the working environment of the liquid cooling unit.

17. The liquid cooling unit system according to claim 16, characterized in that: The liquid cooling unit system further comprises a pressure detection element (70) arranged at the outlet of the compressor (10) to obtain the pressure value at the outlet of the compressor (10); and / or, The liquid cooling unit system further comprises a condenser (50); the fan (20) is arranged on one side of the condenser (50), and the air outlet end of the fan (20) is arranged toward the condenser (50).

18. A liquid cooling unit control device, characterized in that: Used to execute the liquid cooling unit control method according to any one of claims 1 to 15, the liquid cooling unit control device comprises: An acquisition unit, used to acquire the ambient temperature value of the liquid cooling unit; A determination unit, configured to determine a corresponding ambient temperature interval according to the ambient temperature value; The regulating unit is used to determine a corresponding regulating target value according to the ambient temperature range and to regulate the operation of the compressor and / or fan of the liquid cooling unit according to the regulating target value.

19. A non-volatile storage medium, characterized in that: The non-volatile storage medium includes a stored program, wherein when the program is running, the device where the non-volatile storage medium is located is controlled to execute the liquid cooling unit control method according to any one of claims 1 to 15.

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