Method and device for controlling refrigeration process of liquid cooling equipment and liquid cooling equipment

Abstract

The invention relates to a control method and device for the refrigeration process of liquid cooling equipment and the liquid cooling equipment, and the method comprises the steps: obtaining a first temperature change rate of a load and a second temperature change rate around the load; fitting a first calorific value curve about time on the basis of the first temperature change rate, and fitting a second calorific value curve about time on the basis of the second temperature change rate; target time is obtained based on the first calorific value curve, and the operation frequency of the load is determined based on the target time, the last moment of the target time, the first calorific value curve and the second calorific value curve; and determining the calorific value of the load according to the operation frequency of the load, determining the operation frequency of the liquid cooling equipment based on the calorific value of the load, and controlling the liquid cooling equipment to perform refrigeration operation based on the operation frequency. Through the liquid cooling equipment, the problem that in the prior art, due to the fact that a part of a circuit is exposed outside the liquid cooling equipment through a temperature sensing bulb or a temperature sensor, refrigeration adjustment of the liquid cooling equipment is abnormal is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of control of liquid cooling equipment, and particularly relates to a control method and device for a refrigeration process of liquid cooling equipment and the liquid cooling equipment. BACKGROUND

[0002] In the prior art, the refrigeration capacity of liquid cooling equipment is adjusted by using temperature sensing bags and temperature sensors to obtain the inlet and outlet water temperature values of the load side, and then adjusting the operating state of the liquid cooling equipment. However, the use of temperature sensing bags and temperature sensors has certain disadvantages: they need to be installed at the inlet and outlet water positions of the load side, and then the data is returned to the liquid cooling equipment through the connecting line. Therefore, part of the line is exposed outside the liquid cooling equipment, which is easily disturbed by external equipment, thereby affecting the operation of the liquid cooling equipment.

[0003] In view of the above technical problems in the prior art, there is currently no effective solution. SUMMARY

[0004] The present application provides a control method and device for a refrigeration process of liquid cooling equipment and the liquid cooling equipment, to solve the problem that in the prior art, part of the line is exposed outside the liquid cooling equipment through temperature sensing bags or temperature sensors, which can cause abnormal refrigeration adjustment of the liquid cooling equipment.

[0005] In a first aspect, the present application provides a control method for a refrigeration process of liquid cooling equipment, comprising: obtaining a first temperature change rate of a load and a second temperature change rate around the load; wherein the load is an object to be refrigerated by the liquid cooling equipment; fitting a first heat generation curve about time based on the first temperature change rate, and fitting a second heat generation curve about time based on the second temperature change rate; obtaining a target time based on the first heat generation curve, and determining an operating frequency of the load based on the target time and the moment before the target time, and the first heat generation curve and the second heat generation curve, wherein the target time represents the moment when the temperature of the load no longer changes; determining the heat generation of the load according to the operating frequency of the load, and determining the operating frequency of the liquid cooling equipment based on the heat generation of the load, and controlling the liquid cooling equipment to perform refrigeration operation based on the operating frequency.

[0006] In a second aspect, the present application provides a control device for a refrigeration process of a liquid cooling device, comprising: an acquisition module configured to acquire a first temperature change rate of a load and a second temperature change rate around the load, wherein the load is an object to be refrigerated by the liquid cooling device; a first processing module configured to fit a first heat generation curve with respect to time based on the first temperature change rate, and fit a second heat generation curve with respect to time based on the second temperature change rate; a second processing module configured to obtain a target time based on the first heat generation curve, and determine a running frequency of the load based on the target time and a moment before the target time, and the first heat generation curve and the second heat generation curve, wherein the target time represents a moment when the temperature of the load stops changing; and a control module configured to determine a heat generation of the load according to the running frequency of the load, determine a running frequency of the liquid cooling device based on the heat generation of the load, and control the liquid cooling device to perform refrigeration operation based on the running frequency.

[0007] In a third aspect, the present application provides a liquid cooling device, comprising: 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 the control method for the refrigeration process of the liquid cooling device according to the first aspect of the present application.

[0008] In a fourth aspect, the present application further provides a computer storage medium storing computer executable instructions for executing the control method for the refrigeration process of the liquid cooling device according to the first aspect of the present application.

[0009] Compared with the prior art, the above technical solution provided by the embodiments of the present application has the following advantages: the first heat generation curve corresponding to the first temperature change rate of the load is determined by the obtained first temperature change rate, and the second heat generation curve corresponding to the second temperature change rate around the load is determined by the obtained second temperature change rate, then the target time is obtained based on the first heat generation curve, the running frequency of the load is determined based on the target time, the moment before the target time, the first heat generation curve and the second heat generation curve, finally the heat generation of the load is determined according to the running frequency of the load, and the running frequency of the liquid cooling device is determined based on the heat generation of the load, and the liquid cooling device is controlled to run refrigeration based on the running frequency; it can be seen that in the embodiments of the present application, the temperature change rate curve of the heat generating body about time is fitted, so that the moment when the load temperature no longer changes is determined based on the curve, and then the running frequency of the load at this moment can be determined, and the running frequency of the liquid cooling device at this moment is determined, so it can be seen that in the embodiments of the present application, the refrigeration control of the liquid cooling device can be performed without temperature sensing bag or temperature sensor, avoiding the problem that in the prior art, the temperature sensing bag or temperature sensor is partially exposed outside the liquid cooling device, which can cause abnormal refrigeration adjustment of the liquid cooling device, and ensuring the normal operation of the liquid cooling device. BRIEF DESCRIPTION OF DRAWINGS

[0010] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and obviously, other drawings can also be obtained by those skilled in the art without creative labor under the premise of not paying creative labor.

[0012] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings, which do not constitute a limitation on the embodiments, and the elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified, and the drawings do not constitute a proportional limitation.

[0013] Figure 1 A structural schematic diagram of a liquid cooling system provided by the embodiments of the present application;

[0014] Figure 2 A flowchart of a control method of a liquid cooling device refrigeration process provided by the embodiments of the present application;

[0015] Figure 3 A control method flowchart of a liquid cooling device rapid refrigeration provided by the embodiments of the present application;

[0016] Figure 4A structural schematic diagram of a control device for a refrigeration process of a liquid cooling device is provided in the embodiments of the present application.

[0017] Figure 5 A structural schematic diagram of a liquid cooling device is provided in the embodiments of the present application. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0019] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplicity, the components and arrangements of the examples that are described herein are shown in block diagram form. It will be readily apparent to those skilled in the art that the embodiments responded in this manner are merely a few of the numerous possible designs that can be made to the present application. Of course, the intent is not to limit the present application to these designs. Additionally, any examples in the present application that are described as having a feature are not limited to only that feature. Rather, the feature can be combined with any of the other features described in the present application. Finally, no limitations are intended to the components of the embodiments of the present application based on the spatially relative terms used in this description, such as "beneath", "below", "lower", "above", "upper", etc. Such terms are only used to describe the relative location and / or orientation of the illustrated embodiments with respect to one another.

[0020] To solve the problem that the temperature sensing bag or the temperature sensor part line is exposed outside the liquid cooling device in the prior art, causing abnormal refrigeration adjustment of the liquid cooling device, the present application provides a control method for a refrigeration process of a liquid cooling device. In the embodiments of the present application, a liquid cooling system composed of a liquid cooling device and a load is as shown in FIG. 1, the liquid cooling device delivers cooling liquid to the load side through a pipeline to cool the load; a thermal imaging device is installed on the liquid cooling device as close to the load as possible; the thermal imaging device is used to irradiate a heat generating body in the load to monitor the temperature change of the heat generating body. Based on this, as shown in FIG. 2, the control method for the refrigeration process of the liquid cooling device in the embodiments of the present application includes the following steps. Figure 1 Figure 2

[0021] Step 201, obtaining a first temperature change rate of the load and a second temperature change rate around the load; wherein the load is an object cooled by the liquid cooling device;

[0022] Generally, the liquid cooling device is used to cool the heat generating body in the load, so in some cases, the load can be equivalent to the heat generating body. In addition, the first temperature change rate and the second temperature change rate in the embodiments of the present application both refer to the temperature change over time, which can be determined as the temperature change rate by the ratio of the temperature difference in a preset time period to the length of the preset time period. Of course, other ways can also be used to determine the temperature change over time. ​​

[0023] In step 202, a first heat generation curve about time is fitted based on the first temperature change rate, and a second heat generation curve about time is fitted based on the second temperature change rate.

[0024] In this regard, in the embodiment of the present application, the data fitting process can be data sampling first, that is, N times of data collection are performed with time △t as a period, then a suitable mathematical model is selected according to the temperature change rate, and the least square method or other algorithm is used to solve the model parameters. In a specific example, the mathematical model can be a linear regression model. It should be noted that the least square method finds the best fitting parameters by minimizing the sum of squares of errors between model predicted values and actual observed values.

[0025] In step 203, a target time is obtained based on the first heat generation curve, and a running frequency of the load is determined based on the target time and a moment before the target time, and the first heat generation curve and the second heat generation curve, wherein the target time represents a moment when the temperature of the load no longer changes.

[0026] In this regard, the target time refers to the moment when the temperature of the load no longer changes, but in a specific example, it can be difficult to determine the moment when the temperature of the load is completely unchanged, or in general, there is only a moment when the temperature of the load changes little, that is, the target moment can also refer to the moment when the load state is relatively stable.

[0027] In addition, in the embodiment of the present application, the running frequency of the load refers to the running frequency of the heat generating body in the load.

[0028] In step 204, the heat generation of the load is determined according to the running frequency of the load, the running frequency of the liquid cooling device is determined based on the heat generation of the load, and the liquid cooling device is controlled to perform refrigeration operation based on the running frequency.

[0029] Through the steps 201 to 204, the first heat generation curve corresponding to the first temperature change rate of the load is determined, and the second heat generation curve corresponding to the second temperature change rate around the load is determined, then the target time is obtained based on the first heat generation curve, and the running frequency of the load is determined based on the target time, the moment before the target time, the first heat generation curve and the second heat generation curve, and finally the heat generation of the load is determined according to the running frequency of the load, and the running frequency of the liquid cooling device is determined based on the heat generation of the load, and the liquid cooling device is controlled to run refrigeration based on the running frequency; it can be seen that in the embodiment of the application, the temperature change rate of the heat generating body about time is fitted, so that the moment when the load temperature no longer changes is determined based on the curve, and then the running frequency of the load at this time can be determined, and the running frequency of the liquid cooling device at this time is determined, so it can be seen that the refrigeration control of the liquid cooling device can be performed without temperature sensing bag or temperature sensor in the embodiment of the application, avoiding the problem that the existing technology exposes the temperature sensing bag or temperature sensor part line outside the liquid cooling device, which causes abnormal refrigeration adjustment of the liquid cooling device, and ensures the normal operation of the liquid cooling device.

[0030] In the optional implementation of the embodiment of the application, generally, the first temperature change rate of the load and the second temperature change rate around the load have corresponding historical data in the database, so the corresponding historical data can be directly found from the database to control the liquid cooling device, and the historical data includes the temperature change rate of the load and the load around, the running frequency of the liquid cooling device required when the load state is stable, and the corresponding relationship between the above parameters. Based on this, the way of obtaining the first temperature change rate of the load and the second temperature change rate around the load in the step 201 can further include:

[0031] Step 11, obtaining the first real-time temperature of the load and the second real-time temperature around the load by using the thermal imaging device;

[0032] Step 12, determining the temperature change rate of the load based on the first real-time temperature;

[0033] Step 13, in the case that the change rate exceeds the first preset threshold and the first real-time temperature and the second real-time temperature do not exist in the database, determining the first temperature change rate based on the first real-time temperature, and determining the second temperature change rate based on the second real-time temperature.

[0034] It can be seen that in the embodiment of the application, the first real-time temperature of the load and the second real-time temperature around the load can be obtained by the thermal imaging device; since the thermal imaging device obtains the temperature image of the measured object, and the temperature of the measured object is usually not uniform, the average temperature of the measured object at this time can be determined from the temperature image and taken as the real-time temperature.

[0035] Further, in the embodiment of the present application, if the temperature change rate of the load determined by the first real-time temperature is lower than the first preset threshold, it indicates that the running state of the load is relatively stable at this time, and it is not necessary to control the load by adjusting the liquid cooling device for refrigeration. If the temperature change rate of the load is higher than the first preset threshold, it indicates that the running state of the load is not stable at this time, and it is necessary to control the load by adjusting the liquid cooling device for refrigeration to make the running state stable. Further, if the change rate exceeds the first preset threshold, and there is no corresponding historical data in the database, it is necessary to obtain the corresponding heat generation curve based on the current real-time temperature change rate, and then determine the moment when the load running state is stable or the load temperature no longer changes based on the heat generation curve, so as to determine the running frequency of the load at this moment, so as to determine the current required running frequency of the liquid cooling device.

[0036] In the embodiment of the present application, for fitting of the heat generation curve, a plurality of temperature change rates need to be obtained, and then corresponding processing is performed to obtain the corresponding heat generation curve. Based on this, for the manner of fitting the first heat generation curve about time based on the first temperature change rate in step 202, further comprising:

[0037] Step 21, obtaining a plurality of first temperature change rates corresponding to a plurality of cycle lengths;

[0038] Step 22, for each first temperature change rate, determining a first result by differentiating a first ratio, wherein the first ratio is a ratio of the first temperature change rate and a second result, and the second result is a result of differentiating a time variable;

[0039] Step 23, fitting a first heat generation curve about time based on the first result.

[0040] For steps 21 to 23, in a specific example, starting from t0 moment, continuously taking time △t as a period for N times, N heat generation body (heat generation body in the load) temperature change rates d△T1 / dt and heat generation body surrounding temperature change rates d△T2 / dt at different moments can be obtained. Further, a heat generation body temperature change rate curve about time t is fitted, which is denoted as f1 -1 (t); a heat generation body surrounding temperature change rate curve about time t is fitted, which is denoted as f2 -1 (t). Wherein, d is a differential symbol, indicating a differential operation on a variable or a function; dt is a differential of a time variable t, indicating an infinitesimal change of time.

[0041] In the embodiments of the present application, the second temperature change rate corresponding to each period length is obtained in a manner similar to the processing mode of steps 21 to 23 with respect to the second heat generation curve; for each second temperature change rate, a third result is determined by differentiating the second ratio, wherein the second ratio is the ratio of the second temperature change rate to a fourth result, and the fourth result is the result of differentiating the time variable; finally, a second heat generation curve with respect to time is fitted based on the third result.

[0042] In the embodiments of the present application, the manner of obtaining the target time based on the first heat generation curve involved in the above step 203 can further include:

[0043] Step 31, for the first heat generation curve, a first function of the temperature change of the load with respect to time is obtained by integration;

[0044] Step 32, for the second heat generation curve, a second function of the temperature change of the load with respect to time is obtained by integration;

[0045] Step 33, a third function is obtained by differentiating the first function, and the third function is set to 0 to obtain the target time.

[0046] In combination with the above specific examples, taking the first heat generation curve f1-1(t) and the second heat generation curve f2-1(t) as examples, the above steps 31 to 33 can be: by integration, f1(t) = ∫f1-1(t)dt and f2(t) = ∫f2-1(t)dt are solved; wherein f1(t) represents the expression of the temperature of the heat generating body with respect to time t; f2(t) represents the expression of the temperature around the heat generating body with respect to time t. It should be noted that indefinite integral is to find the original function of a function, that is, to inversely deduce the original function from the derivative. From the heat generating body temperature change rate f1-1(t), the heat generating body temperature change function f1(t) with respect to time is obtained by integration, so as to predict the heat generating body temperature at a certain time in the future.

[0047] Further, by differentiation, f1-2(t) is obtained by differentiating the fitted curve f1-1(t), and f1-2(t) = 0 is set to solve the equilibrium time t; the time is the time when the temperature of the heat generating body no longer changes, and is also the time when the load state is relatively stable. It should be noted that the derivative of a function is used to describe the linear approximation of the function near a certain point; from the heat generating body temperature change rate f1-1(t), the heat generating body temperature change rate change function f1-2(t) with respect to time is obtained by differentiation, and the equilibrium time t when the heat generating body temperature no longer changes significantly is found by differentiation, so as to determine the stable state of the system and provide a basis for subsequent liquid cooling parameter adjustment.

[0048] In an optional implementation of the embodiments of the present application, the manner of determining the operating frequency of the load based on the target time, the time immediately before the target time, and the first heat generation curve and the second heat generation curve in step 203 can further include:

[0049] Step 41, substituting the target time into the first function to obtain the first temperature of the load, and substituting the target time into the second function to obtain the second temperature around the load;

[0050] Step 42, substituting the time immediately before the target time into the first function to obtain the third temperature of the load;

[0051] Step 43, determining the operating frequency of the load based on the first temperature, the second temperature, and the third temperature.

[0052] It can be seen that in the embodiments of the present application, after the target time is determined, since the target time represents the time when the load operating state is stable or the load temperature no longer changes, substituting the target time into the first function and the second function can obtain the first temperature of the load and the second temperature around the load when the load is stable, and the third temperature of the load at the time immediately before the target time can also be determined, and then the operating frequency of the load at this time can be determined through the first temperature, the second temperature, and the third temperature. Further, the manner of determining the operating frequency of the load based on the first temperature, the second temperature, and the third temperature in step 43 can further include:

[0053] Step 51, substituting the first temperature, the second temperature, and the third temperature into the following equation to determine the operating frequency of the load:

[0054] d(T 1t -T 1t上一秒 )=[af+bf^2-K*(T 1t -T 2t )] / C

[0055] wherein T 1t is the first temperature, T 1t上一秒 is the third temperature, and T 2t is the second temperature, a and b are proportional coefficients associated with the load, f is the operating frequency of the load, K represents the heat dissipation coefficient, and C is the heat capacity of the load.

[0056] It should be noted that f at this time can specifically refer to the operating frequency of the heat generating body in the load. Moreover, the frequency f of the heat generating body is related to the operating state or the load of the heat generating body; the higher the frequency, the greater the operating state or the load of the heat generating body, resulting in an increase in heat generation, thereby causing temperature rise.

[0057] In the embodiment of the present application, the operating frequency of the load is associated with the heat generation of the load, that is, only the operating frequency of the load needs to be determined to determine the heat generation of the load, and then the operating frequency of the liquid cooling device at this time can be determined based on the heat generation of the load. Therefore, the method of determining the heat generation of the load according to the operating frequency of the load and determining the operating frequency of the liquid cooling device based on the heat generation of the load in the above step 204 can further include:

[0058] Step 61, determining the heat generation corresponding to the operating frequency from the database;

[0059] Step 62, determining the operating frequency Q of the liquid cooling device by the following formula:

[0060] Q = η * Q 液冷额定 *f 液冷目标 / f 液冷额定

[0061] Wherein, η is the refrigeration efficiency of the liquid cooling device; f 液冷额定 is the rated frequency of the liquid cooling device; Q 液冷额定 represents the rated refrigeration capacity of the liquid cooling device at the rated frequency f 液冷额定 ; f 液冷目标 is the operating frequency of the liquid cooling device.

[0062] As can be seen, in the embodiment of the present application, the corresponding load heat generation Q can be found in the database according to the operating frequency f. It can be seen that the database stores the corresponding relationship between the frequency (f) and the load heat generation (Q); the heat generator model database has considered the influence of the temperature T 2 around the heat generator (the relationship between Q and f under different T 2) through experiments; the experimental data in the database can also be dynamically updated through the running data after the stable operation of the liquid cooling device. That is, the database in the embodiment of the present application not only stores historical temperature data, but also stores operating frequency and heat generation, and the correlation between various parameters, so that subsequent liquid cooling device refrigeration process control can be directly performed through historical data in the database. In the case where the current real-time detected data does not exist in the database, the final operating frequency required by the liquid cooling device at present can be obtained by the fitting curve method through the method of the present application.

[0063] The application is explained in the following with reference to the specific embodiments of the application. The specific embodiments provide a control method for quick refrigeration of a liquid cooling device. Specifically, the liquid cooling device acquires temperature changes of a load heat source by a thermal imaging device; then, a change rate of the heat source temperature is calculated, and a heat source temperature change rate curve and a load heat quantity curve are fitted; finally, after calculating a relative balance time of the liquid cooling device and the load, a heat quantity of the load is solved, i.e., a target frequency of the liquid cooling device is solved. Therefore, the running state of the liquid cooling device can be adjusted in advance, and the purpose of quick refrigeration is achieved. Based on this, as shown in the specific embodiments, the method includes the following steps. Figure 3

[0064] In step 301, the thermal imaging device acquires temperature changes T1 of a load heat source and temperature changes T2 of ambient temperature around the heat source, and calculates AT1 and AT2.

[0065] In step 302, it is judged whether AT1 is greater than a threshold value. If not, step 301 is executed; if yes, step 303 is executed.

[0066] In step 303, it is judged whether there are the same AT1 and AT2 in a database. If yes, step 304 is executed; if not, step 305 is executed.

[0067] As can be seen, in the embodiments of the application, the liquid cooling device acquires temperature T1 of a load heat source and temperature T2 of ambient temperature around the heat source by a thermal imaging device, and stores the temperature data in the memory of the liquid cooling device at all times, so as to facilitate subsequent retrieval. The temperature change of the heat source is related to the state of the load, and the data can be tested in advance to improve the database. Then, the heat source temperature T1 上一秒 , T2 上一秒 of the previous second is read from the memory, and the change rate AT1 of the heat source temperature and the change rate AT2 of the ambient temperature around the heat source at the current time are calculated; and recorded in the database. T1 上一秒 represents the heat source temperature T1 of the previous second at the current time; T2 上一秒 represents the ambient temperature T2 around the heat source of the previous second at the current time. Every second is judged, when AT1 is greater than a threshold value, the current time is recorded as t0, and it is judged whether there are the same data of the change rate AT1 of the heat source temperature and the change rate AT2 of the ambient temperature around the heat source in the historical database; if yes, the historical state is directly called for adjustment; otherwise, a state prediction module is entered. The historical running data of the unit are stored in the database, and it can be queried that under the conditions of AT1 and AT2, the liquid cooling device unit should run in what state. When AT1 is less than or equal to the threshold value, the above steps are returned and repeatedly executed.

[0068] In step 304, historical data is directly called, and the liquid cooling device is controlled to run. ​

[0069] Step 305, starting from t0, continuously with time △t as a period of N times, can be obtained at N different time of the heat source and the heat source around the temperature rate of change;

[0070] Step 306, fitting out the heat source temperature rate of change about time t curve, fitting out the heat source around the temperature rate of change about time t curve;

[0071] Specifically, starting from t0, continuously with time △t as a period of N times, can be obtained at N different time of the heat source temperature rate of change d△T1 / dt, the heat source around the temperature rate of change d△T2 / dt; Therefore, fitting out the heat source temperature rate of change about time t curve, which is recorded as f1-1(t); Fitting out the heat source around the temperature rate of change about time t curve, which is recorded as f2-1(t).

[0072] Step 307, solving the heat source temperature about time t function f1(t), solving the heat source around the temperature about time t function f2(t);

[0073] Specifically, by using integral, solving f1(t) = ∫f1-1(t)dt, f2(t) = ∫f2-1(t)dt; f1(t) represents the expression of the heat source temperature about time t; f2(t) represents the expression of the heat source around the temperature about time t.

[0074] Step 308, derivative is carried out to solve the balance time t;

[0075] Specifically, the fitted curve f1 -1 (t) can be differentiated to get f1 -2 (t), let f1 -2 (t) = 0, solve the balance time t; The time is the time when the heat source temperature no longer changes, which is also the time when the load state is relatively stable.

[0076] Step 309, substituting the balance time t into f1(t), f2(t) can be solved t time predicted heat source temperature T1 t , heat source around the temperature T2 t ; Similarly, the heat source temperature T1 t上一秒 , heat source around the temperature T2 t上一秒 of the previous second of the balance time t can also be obtained;

[0077] Step 310, using the formula △T t = d(T1 t -T1 t上一秒 ) = [af+bf^2-K*(T1 t -T2 t)] / C; solve the frequency f of the heat source at the balance time t;

[0078] Wherein, △T t represents the heat source temperature change rate at time t; T1 t represents the heat source temperature T1 at time t; T1 t上一秒 represents the heat source temperature T1 at the previous second before time t; a, b are proportional coefficients related to the heat source; f represents the operating frequency of the heat source; T2 t represents the heat source ambient temperature T2 at time t; K represents the heat dissipation coefficient, which represents the heat dissipation capacity of the heat source to the environment; C represents the heat capacity of the heat source.

[0079] Step 311, according to the frequency f, the corresponding load heat Q can be found in the heat source model database, according to Q=η*Q 液冷额定 *f 液冷目标 / f 液冷额定 Solve the target operating frequency of the liquid cooling equipment;

[0080] Wherein, wherein, η represents the refrigeration efficiency of the liquid cooling equipment; f represents the rated frequency of the liquid cooling equipment; Q represents the rated refrigeration capacity of the liquid cooling equipment at the rated frequency f.

[0081] Step 312, store this set of data in the history database, which is convenient for comparison and calling next time.

[0082] It can be seen that in the embodiment of the present application, the heat source temperature change on the load side can be accurately and real-timely obtained through the thermal imaging technology, and the possibility of temperature data being disturbed by external interference is reduced; therefore, the operating state of the liquid cooling equipment can be calculated, and the operating state of the liquid cooling equipment is adjusted in advance, so as to achieve the purpose of rapid refrigeration. Compared with the prior art in which the refrigeration process of the liquid cooling equipment is adjusted after temperature detection by the temperature sensing bag or the temperature sensor, the efficiency is higher through the method in the embodiment of the present application, and the accuracy is also higher, which can ensure the stable operation of the liquid cooling equipment.

[0083] Corresponding to the above Figure 2 , the embodiment of the present application provides a control device for the refrigeration process of the liquid cooling equipment, as shown in Figure 4 , the device comprises:

[0084] The acquisition module 402 is used to acquire the first temperature change rate of the load and the second temperature change rate of the load surrounding; wherein, the load is the object refrigerated by the liquid cooling equipment;

[0085] The first processing module 404 is used to fit the first heat quantity curve about time based on the first temperature change rate, and fit the second heat quantity curve about time based on the second temperature change rate;

[0086] The second processing module 406 is configured to obtain a target time based on the first heat quantity curve, and determine the running frequency of the load based on the target time, a time point immediately before the target time, the first heat quantity curve, and the second heat quantity curve, where the target time represents a time point at which the temperature of the load no longer changes.

[0087] The control module 408 is configured to determine the heat quantity of the load according to the running frequency of the load, determine the running frequency of the liquid cooling device based on the heat quantity of the load, and control the liquid cooling device to perform refrigeration operation based on the running frequency.

[0088] In an optional implementation of the embodiments of the present application, the acquisition module in the embodiments of the present application can further include: a second acquisition unit configured to acquire the first real-time temperature of the load and the second real-time temperature around the load by using the thermal imaging device; a first determination unit configured to determine the temperature change rate of the load based on the first real-time temperature; and a second determination unit configured to, in a case where the temperature change rate exceeds the first preset threshold and the first real-time temperature and the second real-time temperature do not exist in the database, determine the first temperature change rate based on the first real-time temperature and determine the second temperature change rate based on the second real-time temperature.

[0089] In an optional implementation of the embodiments of the present application, the first processing module in the embodiments of the present application can further include: a second acquisition unit configured to acquire a plurality of first temperature change rates corresponding to a plurality of cycle durations; a third determination unit configured to, for each first temperature change rate, determine a first result obtained by differentiating a first ratio, where the first ratio is a ratio result of the first temperature change rate and a second result, and the second result is a result obtained by differentiating a time variable; and a first processing unit configured to fit the first heat quantity curve about time based on the first result.

[0090] In an optional implementation of the embodiments of the present application, the second processing module in the embodiments of the present application can further include: a second processing unit configured to, for the first heat quantity curve, obtain a first function of the temperature of the load changing with time by integration; a third processing unit configured to, for the second heat quantity curve, obtain a second function of the temperature of the load changing with time by integration; and a fourth processing unit configured to obtain a third function by differentiating the first function, and obtain the target time by setting the third function to be equal to 0.

[0091] In an optional implementation of the embodiments of the present application, the second processing module in the embodiments of the present application can further include: a fifth processing unit configured to obtain a first temperature of the load by substituting the target time into the first function, and obtain a second temperature around the load by substituting the target time into the second function; a sixth processing unit configured to obtain a third temperature of the load by substituting a time point immediately before the target time into the first function; and a seventh processing unit configured to determine the running frequency of the load based on the first temperature, the second temperature, and the third temperature.

[0092] In an optional implementation manner of the embodiment of the present application, the seventh processing unit in the embodiment of the present application is further configured to perform the following steps: substituting the first temperature, the second temperature, and the third temperature into the following equation to determine the operating frequency of the load: d(T 1t -T 1t上一秒 )=[af+bf^2-K*(T 1t -T 2t )] / C

[0093] Among them, T 1t is the first temperature, T 1t上一秒 is the third temperature, T 2t is the second temperature, a and b are proportional coefficients associated with the load, f is the operating frequency of the load, K represents the heat dissipation coefficient, and C is the heat capacity of the load.

[0094] In an optional embodiment of the embodiment of the present application, the control module in the embodiment of the present application may further include: a third determination unit for determining the heat output corresponding to the operating frequency from the database; a control unit for determining the operating frequency Q of the liquid cooling device by the following formula: Q = η * Q 液冷额定 *f 液冷目标 / f 液冷额定

[0095] Where η is the cooling efficiency of the liquid cooling equipment; f 液冷额定 is the rated frequency of the liquid cooling equipment; Q 液冷额定 Indicates that the liquid cooling equipment is at rated frequency f 液冷额定 Rated cooling capacity under 液冷目标 The operating frequency of the liquid cooling device.

[0096] like Figure 5 As shown, the embodiment of the present application provides a liquid cooling device, including a processor 511, a communication interface 512, a memory 513 and a communication bus 514, wherein the processor 511, the communication interface 512, and the memory 513 communicate with each other through the communication bus 514.

[0097] Memory 513, for storing computer programs;

[0098] In one embodiment of the present application, the processor 511 is used to execute the program stored in the memory 513 to implement the control method of the refrigeration process of the liquid cooling equipment provided by any of the aforementioned method embodiments. The role it plays is similar and will not be repeated here.

[0099] The embodiment of the present application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the steps of the control method of the refrigeration process of the liquid cooling device provided by any one of the preceding method embodiments.

[0100] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place or distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0101] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be realized by means of software plus a general hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions or the part that contributes to the related art can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0102] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0103] The above description is merely one specific implementation of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present 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 disclosed herein.

Claims

1. A method for controlling the refrigeration process of a liquid cooling device, characterized in that: include: Obtaining a first temperature change rate of a load and a second temperature change rate around the load; wherein the load is an object cooled by the liquid cooling device; fitting a first heating value curve with respect to time based on the first temperature change rate, and fitting a second heating value curve with respect to time based on the second temperature change rate; Obtaining a target time based on the first heating value curve, and determining an operating frequency of the load based on the target time and a moment before the target time, as well as the first heating value curve and the second heating value curve, wherein the target time represents a moment when the load temperature no longer changes; The heat generation of the load is determined according to the operating frequency of the load, the operating frequency of the liquid cooling device is determined based on the heat generation of the load, and the liquid cooling device is controlled to perform cooling operation based on the operating frequency.

2. The method according to claim 1, characterized in that Obtaining a first temperature change rate of a load and a second temperature change rate around the load, comprising: obtaining a first real-time temperature of the load and a second real-time temperature around the load using a thermal imaging device; determining a rate of change of the temperature of the load based on the first real-time temperature; When the change rate exceeds a first preset threshold and the first real-time temperature and the second real-time temperature do not exist in the database, the first temperature change rate is determined based on the first real-time temperature, and the second temperature change rate is determined based on the second real-time temperature.

3. The method according to claim 1, characterized in that Fitting a first heating value curve with respect to time based on the first temperature change rate includes: Obtaining multiple first temperature change rates corresponding to multiple cycle lengths; For each first temperature change rate, determine a first result obtained by differentiating a first ratio, wherein the first ratio is a ratio of the first temperature change rate to a second result, and the second result is a result of differentiating a time variable; A first heating value curve with respect to time is fitted based on the first result.

4. The method according to claim 1, wherein Obtaining a target time based on the first heating value curve includes: For the first heating value curve, obtaining a first function of the temperature of the load changing with time by integration; For the second heating value curve, a second function of the temperature of the load changing with time is obtained by integration; A third function is obtained by deriving the first function, and the third function is set equal to 0 to obtain the target time.

5. The method according to claim 4, characterized in that Determining the operating frequency of the load based on the target time and the moment before the target time, as well as the first heating value curve and the second heating value curve includes: Substituting the target time into the first function to obtain a first temperature of the load, and substituting the target time into the second function to obtain a second temperature around the load; Substituting the time immediately before the target time into the first function to obtain a third temperature of the load; An operating frequency of the load is determined based on the first temperature, the second temperature, and the third temperature.

6. The method according to claim 5, characterized in that Determining an operating frequency of the load based on the first temperature, the second temperature, and the third temperature includes: Substitute the first temperature, the second temperature, and the third temperature into the following equation to determine the operating frequency of the load: d(T 1t -T 1t上一秒 )=[af+bf^2-K*(T 1t -T 2t )] / C Among them, T 1t is the first temperature, T 1t上一秒 is the third temperature, T 2t is the second temperature, a and b are proportional coefficients associated with the load, f is the operating frequency of the load, K represents the heat dissipation coefficient, and C is the heat capacity of the load.

7. The method according to claim 1, characterized in that Determining the heat generation of the load according to the operating frequency of the load, and determining the operating frequency of the liquid cooling device based on the heat generation of the load, including: determining a heat value corresponding to the operating frequency from a database; The operating frequency Q of the liquid cooling device is determined by the following formula: Q=η*Q 液冷额定 *f 液冷目标 / f 液冷额定 Wherein, η is the cooling efficiency of the liquid cooling device; f 液冷额定 is the rated frequency of the liquid cooling equipment; Q 液冷额定 Indicates that the liquid cooling equipment is at rated frequency f 液冷额定 Rated cooling capacity under the f 液冷目标 is the operating frequency of the liquid cooling device.

8. A control device for the refrigeration process of a liquid cooling device, characterized in that: include: an acquisition module, configured to acquire a first temperature change rate of a load and a second temperature change rate around the load; wherein the load is an object to be cooled by the liquid cooling device; a first processing module, configured to fit a first heating value curve with respect to time based on the first temperature change rate, and to fit a second heating value curve with respect to time based on the second temperature change rate; a second processing module, configured to obtain a target time based on the first heating value curve, and determine an operating frequency of the load based on the target time and a moment before the target time, as well as the first heating value curve and the second heating value curve, wherein the target time represents a moment when the load temperature no longer changes; The control module is used to determine the heat generation of the load according to the operating frequency of the load, determine the operating frequency of the liquid cooling device based on the heat generation of the load, and control the liquid cooling device to perform cooling operation based on the operating frequency.

9. A liquid cooling device, 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 coupled to the at least one bus; At least one memory connected to the at least one bus, wherein the processor is configured to execute the method for controlling a cooling process of a liquid cooling device according to any one of claims 1 to 7.

10. A computer storage medium, characterized in that Computer-executable instructions are stored, and the computer-executable instructions are used to execute the control method for the refrigeration process of the liquid cooling equipment according to any one of claims 1 to 7.

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