Liquid cooling control method, electronic equipment and storage medium

Abstract

The invention provides a liquid cooling control method, electronic equipment and a storage medium. The liquid cooling control method comprises the following steps: acquiring a current operation mode of a liquid cooling device of the energy storage system; when the current operation mode is the refrigeration mode, the highest battery temperature and the average battery temperature in the energy storage system are obtained; and if the highest temperature of the battery is greater than or equal to a preset first refrigeration temperature threshold value and the average temperature of the battery is greater than or equal to a preset first average temperature threshold value, reducing a target liquid cooling temperature of a refrigeration mode, so that the liquid cooling device performs refrigeration according to the reduced target liquid cooling temperature. When the current operation mode of the liquid cooling device is the refrigeration mode, if the maximum temperature of the battery and the average temperature of the battery are relatively high, the target liquid cooling temperature of the liquid cooling device is further reduced to enhance the refrigeration effect, so that the battery can be better maintained in a relatively good operation temperature interval, and the service life of the battery is prolonged. Therefore, the service life of the battery and the overall efficiency and economic benefits of the energy storage system are improved.

Description

Technical Field

[0001] The present application relates to the field of liquid cooling technology, and in particular to a liquid cooling control method, electronic equipment and storage medium. Background Art

[0002] In the core operating mechanism of the energy storage system, the liquid cooling system plays a vital role. It precisely monitors and responds to the temperature status of the batteries in the energy storage system, and intelligently performs cooling or heating operations to maintain the delicate balance of the internal temperature of the energy storage system. The optimization of this process not only significantly improves the energy conversion efficiency of the energy storage system, but also greatly enhances the reliability and durability of the energy storage products, ensuring the long-term stable operation of the energy storage system.

[0003] In related technologies, the control strategy of the liquid cooling system is often rough and cannot be adjusted in time, which makes it impossible for the battery to maintain an optimal operating temperature range, resulting in reduced battery life and reduced overall efficiency and economic benefits of the energy storage system. Summary of the invention

[0004] The embodiments of the present application provide a liquid cooling control method, an electronic device, and a storage medium, which are intended to enable the battery to be better maintained in an optimal operating temperature range, thereby improving the battery life, the overall performance and economic benefits of the energy storage system.

[0005] In a first aspect, an embodiment of the present application provides a liquid cooling control method, the liquid cooling control method comprising:

[0006] Obtaining the current operation mode of the liquid cooling device of the energy storage system;

[0007] When the current operating mode is a cooling mode, obtaining a maximum temperature and an average temperature of batteries in the energy storage system;

[0008] If the maximum battery temperature is greater than or equal to a preset first cooling temperature threshold, and the average battery temperature is greater than or equal to a preset first average temperature threshold, the target liquid cooling temperature of the cooling mode is reduced so that the liquid cooling device performs cooling according to the reduced target liquid cooling temperature.

[0009] In one embodiment, if the maximum temperature of the battery is greater than or equal to a preset first cooling temperature threshold, and the average temperature of the battery is greater than or equal to a preset first average temperature threshold, lowering the target liquid cooling temperature of the cooling mode includes:

[0010] If the maximum battery temperature is greater than or equal to the first cooling temperature threshold and less than a preset second cooling temperature threshold, and the average battery temperature is greater than or equal to the first average temperature threshold, lowering the target liquid cooling temperature of the cooling mode to a first preset value;

[0011] After obtaining the maximum temperature of the battery in the energy storage system, the method further includes:

[0012] If the maximum battery temperature is greater than or equal to the second cooling temperature threshold, the target liquid cooling temperature of the cooling mode is reduced to a second preset value, wherein the second preset value is less than the first preset value.

[0013] In one embodiment, after obtaining the maximum temperature and the average temperature of the batteries in the energy storage system, the method further includes:

[0014] If the maximum temperature of the battery is lower than a preset third cooling temperature threshold, or the average temperature of the battery is lower than a preset second average temperature threshold, the liquid cooling device is controlled to exit the cooling mode, wherein the third cooling temperature threshold is lower than the first cooling temperature threshold, and the second average temperature threshold is lower than the first average temperature threshold.

[0015] In one embodiment, after obtaining the current operation mode of the liquid cooling device of the energy storage system, the method further includes:

[0016] When the current operating mode is the standby mode, obtaining a maximum temperature difference of a battery in the energy storage system;

[0017] If the maximum temperature difference of the battery is greater than or equal to a preset first temperature difference threshold, the liquid cooling device is controlled to switch from the standby mode to the self-circulation mode.

[0018] In one embodiment, before obtaining the current operation mode of the liquid cooling device of the energy storage system, the method further includes:

[0019] Obtaining an average battery temperature and a maximum battery temperature difference in the energy storage system;

[0020] If the average battery temperature is greater than or equal to a preset third average temperature threshold and less than the first average temperature threshold, and the maximum battery temperature difference is less than or equal to a preset second temperature difference threshold, the current operating mode is set to standby mode, wherein the second temperature difference threshold is less than the first temperature difference threshold.

[0021] In one embodiment, before obtaining the current operation mode of the liquid cooling device of the energy storage system, the method further includes:

[0022] Obtaining the minimum temperature and average temperature of the batteries in the energy storage system;

[0023] If the lowest battery temperature is lower than a preset first heating temperature threshold, and the average battery temperature is lower than a preset third average temperature threshold, the current operating mode is set to a heating mode.

[0024] In one embodiment, after obtaining the maximum temperature and the average temperature of the batteries in the energy storage system, the method further includes:

[0025] Obtaining a data verification model associated with the energy storage system;

[0026] Using the data verification model, verifying the data accuracy of at least one of the maximum temperature of the battery and the average temperature of the battery to obtain a data verification result;

[0027] If the data verification result is verification passed, execute the step of lowering the target liquid cooling temperature of the cooling mode if the maximum battery temperature is greater than or equal to the preset first cooling temperature threshold and the average battery temperature is greater than or equal to the preset first average temperature threshold.

[0028] In one embodiment, the data verification model is generated by the following steps:

[0029] Get the preset machine learning model;

[0030] Using historical operating data in the energy storage system to perform model training on the machine learning model to obtain a trained model, wherein the historical operating data includes historical temperature data in the energy storage system;

[0031] The trained model is subjected to model performance verification using a cross-validation algorithm, and after the model performance verification passes, the trained model is used as the data verification model.

[0032] In a second aspect, an embodiment of the present application provides a liquid cooling control device, the liquid cooling control device comprising:

[0033] A first acquisition module is used to acquire the current operation mode of the liquid cooling device of the energy storage system;

[0034] A second acquisition module, used for acquiring a maximum temperature and an average temperature of a battery in the energy storage system when the current operation mode is a cooling mode;

[0035] A parameter adjustment module is used to reduce the target liquid cooling temperature of the cooling mode if the maximum temperature of the battery is greater than or equal to a preset first cooling temperature threshold and the average temperature of the battery is greater than or equal to a preset first average temperature threshold, so that the liquid cooling device performs cooling according to the reduced target liquid cooling temperature.

[0036] In a third aspect, an embodiment of the present application provides an electronic device, comprising a processor and a memory, wherein the memory stores a computer program, and the computer program is configured to be executed by the processor to implement the liquid cooling control method as described in any one of the above items.

[0037] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is configured to be executed by a processor to implement the liquid cooling control method as described in any one of the above items.

[0038] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program or instructions, which are executed by a processor to implement the liquid cooling control method as described in any one of the above items.

[0039] Beneficial effects of the embodiments of the present application:

[0040] In an embodiment of the present application, when the current operating mode of the liquid cooling device is the cooling mode, if the maximum battery temperature and the average battery temperature are both high, the target liquid cooling temperature of the liquid cooling device is further reduced to enhance the cooling effect, so that the battery can be better maintained in an optimal operating temperature range, thereby improving the battery life, the overall performance and economic benefits of the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 It is a schematic flow chart of an embodiment of a liquid cooling control method provided in an embodiment of the present application;

[0043] Figure 2 is a flow chart of another embodiment of the liquid cooling control method provided in the embodiment of the present application;

[0044] Figure 3 is a flow chart of another embodiment of the liquid cooling control method provided in the embodiment of the present application;

[0045] Figure 4 It is a flow chart of another embodiment of the liquid cooling control method provided in the embodiment of the present application;

[0046] Figure 5 It is a schematic diagram of the structure of an embodiment of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0048] In the description of this application, the meaning of "plurality" is two or more, unless otherwise expressly and specifically defined. In addition, in the description of this application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0049] In order to better maintain the battery in an optimal operating temperature range, the embodiment of the present application provides a liquid cooling control method, an electronic device and a storage medium. When the current operating mode of the liquid cooling device is the cooling mode, if the maximum temperature of the battery and the average temperature of the battery are both high, the target liquid cooling temperature of the liquid cooling device is further reduced to enhance the cooling effect, so that the battery can be better maintained in an optimal operating temperature range, thereby improving the battery life, the overall performance and economic benefits of the energy storage system. For specific solutions, please refer to the following specific description.

[0050] In a first aspect, an embodiment of the present application provides a liquid cooling control method. Specifically, referring to Figure 1 , Figure 1 FIG. 1 is a flow chart of an embodiment of a liquid cooling control method. Figure 1 In the liquid cooling control method, the liquid cooling control method may include:

[0051] 101. Obtain the current operating mode of the liquid cooling device of the energy storage system.

[0052] In an embodiment of the present application, the energy storage system may be, for example, an energy storage cabinet or other equipment. A battery module is provided in the energy storage system, and the battery module includes a plurality of batteries. The energy storage function is realized by charging and discharging the batteries. A liquid cooling device is also provided in the energy storage system, and the liquid cooling device is used to adjust the temperature of the batteries in the energy storage system to ensure that the batteries in the energy storage system are in a suitable operating temperature range when working. The liquid cooling device has a variety of operating modes, such as cooling mode, heating mode, self-circulation mode, standby mode, etc. Among them, self-circulation means that the condenser, compressor and heat exchanger in the liquid cooling device are not working, but the liquid cooling medium in the liquid cooling device is driven to circulate by a water pump to achieve the purpose of heat dissipation or heating of the battery. The liquid cooling medium may be water, for example.

[0053] In an embodiment of the present application, step 101 may be executed periodically, for example, step 101 may be executed once every 30 seconds, so that the execution of subsequent steps of step 101 is triggered by the execution of step 101 .

[0054] 102. When the current operating mode is the cooling mode, obtain the maximum temperature and average temperature of the batteries in the energy storage system.

[0055] In an embodiment of the present application, when the current operating mode is the cooling mode, the liquid cooling device cools the battery. At this time, the maximum temperature and average temperature of the battery in the energy storage system can be obtained to determine whether the current cooling effect of the liquid cooling device can meet the current operating conditions of the energy storage system.

[0056] In an embodiment of the present application, a plurality of temperature collection points are provided in the energy storage system, and the plurality of temperature collection points are respectively located at a plurality of positions of a plurality of batteries, so as to collect a plurality of battery temperatures. The maximum battery temperature refers to the maximum value among the plurality of battery temperatures, and the average battery temperature refers to the average value of the plurality of battery temperatures.

[0057] 103. If the maximum battery temperature is greater than or equal to a preset first cooling temperature threshold, and the average battery temperature is greater than or equal to a preset first average temperature threshold, reduce the target liquid cooling temperature of the cooling mode so that the liquid cooling device performs cooling according to the reduced target liquid cooling temperature.

[0058] In an embodiment of the present application, the first refrigeration temperature threshold and the first average temperature threshold can be preset based on actual needs, for example, the first refrigeration temperature threshold can be set to 35° C., and the first average temperature threshold can be set to 25° C. The target liquid cooling temperature refers to the target value of the temperature that the liquid cooling device needs to reach, for example, the target liquid cooling temperature can be the target value of the temperature of the liquid cooling medium in the liquid cooling device.

[0059] In an embodiment of the present application, if the maximum battery temperature is greater than or equal to the preset first cooling temperature threshold (e.g., 35°C), and the average battery temperature is greater than or equal to the preset first average temperature threshold (e.g., 25°C), it indicates that the maximum battery temperature is high and the average battery temperature is also high, so it can be determined that the current cooling effect of the liquid cooling device cannot meet the current working conditions of the energy storage system. At this time, the target liquid cooling temperature of the cooling mode can be lowered so that the liquid cooling device can be cooled according to the lowered target liquid cooling temperature, thereby enhancing the current cooling effect of the liquid cooling device.

[0060] It can be seen that in the above-mentioned embodiment of the present application, when the current operating mode of the liquid cooling device is the cooling mode, if the maximum temperature of the battery and the average temperature of the battery are both high, the target liquid cooling temperature of the liquid cooling device is further reduced to enhance the cooling effect, so that the battery can be better maintained in a better operating temperature range, thereby improving the battery life, the overall performance and economic benefits of the energy storage system.

[0061] In some embodiments of the present application, in step 103, the situation where the maximum temperature of the battery is greater than or equal to the preset first cooling temperature threshold, and the average temperature of the battery is greater than or equal to the preset first average temperature threshold can be further subdivided. Specifically, step 103 may include: if the maximum temperature of the battery is greater than or equal to the first cooling temperature threshold (for example, 35°C) and less than the preset second cooling temperature threshold (for example, 40°C), and the average temperature of the battery is greater than or equal to the first average temperature threshold (for example, 25°C), the target liquid cooling temperature of the cooling mode can be reduced to a first preset value. Among them, the second cooling temperature threshold is greater than the first cooling temperature threshold, for example, the second cooling temperature threshold can be set to 40°C, and the first preset value can be set based on actual needs, for example, the first preset value can be set to 15°C.

[0062] In a further embodiment, after obtaining the maximum temperature of the battery in the energy storage system, it may also include: if the maximum temperature of the battery is greater than or equal to the second cooling temperature threshold (e.g., 40°C), it indicates that there is a serious high temperature situation in the energy storage system, so the target liquid cooling temperature of the cooling mode can be reduced to a second preset value instead of the first preset value. Wherein, the second preset value is less than the first preset value, for example, the second preset value can be set to 10°C, thereby further enhancing the cooling effect of the liquid cooling device, in order to quickly eliminate the serious high temperature situation in the energy storage system. In addition, since when the maximum temperature of the battery is greater than or equal to the second cooling temperature threshold (e.g., 40°C), the average temperature of the battery is usually greater than or equal to the first average temperature threshold (e.g., 25°C), the determination that the average temperature of the battery is greater than or equal to the first average temperature threshold (e.g., 25°C) is omitted at this time. Of course, this determination may not be omitted, that is, if the maximum temperature of the battery is greater than or equal to the second cooling temperature threshold (e.g., 25°C), and the average temperature of the battery is greater than or equal to the first average temperature threshold (e.g., 25°C), the target liquid cooling temperature of the cooling mode is reduced to the second preset value (e.g., 10°C).

[0063] In some embodiments of the present application, the triggering conditions for exiting the cooling mode are described. Specifically, when the current operating mode is the cooling mode, after obtaining the maximum battery temperature and the average battery temperature in the energy storage system, it may also include: if the maximum battery temperature is less than the preset third cooling temperature threshold, or the average battery temperature is less than the preset second average temperature threshold, it indicates that there is no risk of overheating in the energy storage system, so the liquid cooling device can be controlled to exit the cooling mode and return to the initial state (in the initial state, the liquid cooling device has not entered the cooling, heating, self-circulation, standby and other operating modes). Among them, the third cooling temperature threshold is less than the first cooling temperature threshold, for example, the third cooling temperature threshold can be set to 25°C, and the second average temperature threshold is less than the first average temperature threshold, for example, the third cooling temperature threshold can be set to 22°C.

[0064] In some embodiments of the present application, the triggering conditions for entering the cooling mode are described. Specifically, before obtaining the current operating mode of the liquid cooling device of the energy storage system, it can also include: obtaining the maximum temperature of the battery and the average temperature of the battery in the energy storage system; if the maximum temperature of the battery is greater than or equal to the third cooling temperature threshold (e.g., 25°C), and the average temperature of the battery is greater than or equal to the first average temperature threshold (e.g., 25°C), it indicates that the energy storage system is at risk of overheating, so the liquid cooling device can be controlled to enter the cooling mode, and the target liquid cooling temperature of the cooling mode is set to the third preset value, in order to reduce the battery temperature in the energy storage system. Among them, the third preset value is greater than the first preset value, for example, the third preset value can be set to 20°C, so as to facilitate the subsequent reduction of the target liquid cooling temperature. It can be seen that if the maximum temperature of the battery is greater than or equal to the third cooling temperature threshold (e.g., 25°C) and less than the first cooling temperature threshold (e.g., 35°C), and the average temperature of the battery is greater than or equal to the first average temperature threshold (e.g., 25°C), step 103 will not be executed to reduce the target liquid cooling temperature, but the target liquid cooling temperature will be maintained at the third preset value (e.g., 20°C).

[0065] In some embodiments of the present application, Figure 2 As shown, in Figure 1 On the basis of the illustrated embodiment, after obtaining the current operation mode of the liquid cooling device of the energy storage system, the following may also be included:

[0066] 201. When the current operating mode is the standby mode, obtain the maximum temperature difference of the batteries in the energy storage system.

[0067] In the embodiment of the present application, the maximum temperature difference of the battery refers to the difference between the maximum and minimum values ​​of the multiple battery temperatures in the energy storage system. When the current operating mode is the standby mode, it indicates that the battery temperature in the energy storage system is already in a more suitable operating temperature range. At this time, the maximum temperature difference of the battery in the energy storage system can be obtained to determine the uniformity of the battery temperature in the energy storage system.

[0068] 202. If the maximum temperature difference of the battery is greater than or equal to a preset first temperature difference threshold, control the liquid cooling device to switch from the standby mode to the self-circulation mode.

[0069] In an embodiment of the present application, if the first temperature difference threshold can be set based on actual needs, for example, the first temperature difference threshold can be set to 6°C. If the maximum temperature difference of the battery is greater than or equal to the first temperature difference threshold (for example, 6°C), it is determined that the uniformity of the battery temperature in the energy storage system is not ideal, so the liquid cooling device can be controlled to switch from the standby mode to the self-circulation mode, so as to utilize the self-circulation to make the temperature distribution in the energy storage system more uniform.

[0070] In some embodiments of the present application, after step 201, it may also include: if the maximum temperature difference of the battery is less than the first temperature difference threshold (for example, 6°C), it is determined that the uniformity of the battery temperature in the energy storage system is good, so the liquid cooling device may not be controlled to switch from the standby mode to the self-circulation mode, but maintained in the standby mode to reduce the energy consumption of the liquid cooling device.

[0071] In some embodiments of the present application, the triggering conditions for exiting the self-circulation mode are described. Specifically, after obtaining the current operating mode of the liquid cooling device of the energy storage system, it can also include: when the current operating mode is the self-circulation mode, obtaining the maximum temperature difference of the battery in the energy storage system; if the maximum temperature difference of the battery is less than or equal to the preset second temperature difference threshold, it is determined that the uniformity of the battery temperature in the energy storage system has been restored to a better state, so the liquid cooling device can be controlled to exit the self-circulation mode and return to the initial state. Among them, the second temperature difference threshold is less than the first temperature difference threshold, for example, the second temperature difference threshold can be set to 3°C.

[0072] In some embodiments of the present application, Figure 3 As shown, in Figure 1 or Figure 2 On the basis of the illustrated embodiment, after obtaining the current operation mode of the liquid cooling device of the energy storage system, the following may also be included:

[0073] 301. Obtain the average temperature of the batteries and the maximum temperature difference of the batteries in the energy storage system.

[0074] 302. If the battery average temperature is greater than or equal to a preset third average temperature threshold and less than the first average temperature threshold, and the battery maximum temperature difference is less than or equal to a preset second temperature difference threshold, set the current operating mode to the standby mode.

[0075] In an embodiment of the present application, if the average battery temperature is greater than or equal to the third average temperature threshold (for example, 15°C) and less than the first average temperature threshold (for example, 25°C), and the maximum battery temperature difference is less than or equal to the second temperature difference threshold (for example, 3°C), it indicates that the battery temperature in the energy storage system is already in a more suitable operating temperature range, and the battery temperature in the energy storage system has good uniformity, so the current operating mode can be set to standby mode to reduce the energy consumption of the liquid cooling device.

[0076] In some embodiments of the present application, the triggering conditions for entering the heating mode are described. Specifically, before obtaining the current operating mode of the liquid cooling device of the energy storage system, it can also include: obtaining the minimum battery temperature and the average battery temperature in the energy storage system, wherein the minimum battery temperature refers to the minimum value of multiple battery temperatures in the energy storage system; if the minimum battery temperature is less than the preset first heating temperature threshold (e.g., 12°C), and the average battery temperature is less than the preset third average temperature threshold (e.g., 15°C), it indicates that the battery temperature in the energy storage system is too low, which may affect the product performance of the energy storage system. Therefore, the current operating mode can be set to the heating mode, and the target liquid cooling temperature of the heating mode can be set to the third preset value (e.g., 20°C) to increase the battery temperature in the energy storage system.

[0077] In some embodiments of the present application, the triggering conditions for exiting the heating mode are described. Specifically, after obtaining the current operating mode of the liquid cooling device of the energy storage system, it can also include: when the current operating mode is the heating mode, obtaining the minimum battery temperature and the average battery temperature in the energy storage system; if the minimum battery temperature is greater than or equal to the preset second heating temperature threshold (for example, 20°C), or the average battery temperature is greater than the preset fourth average temperature threshold (for example, 23°C), it indicates that the battery temperature in the energy storage system is not too low and will not affect the product performance of the energy storage system. Therefore, the liquid cooling device can be controlled to exit the heating mode and return to the initial state. Among them, the second heating temperature threshold is greater than the first heating temperature threshold, for example, the second heating temperature threshold can be set to 20°C, and the fourth average temperature threshold is greater than the third average temperature threshold, for example, the fourth average temperature threshold can be set to 23°C.

[0078] It can be seen that in the above embodiments of the present application, through the fine control of the cooling mode, heating mode, self-circulation mode, and standby mode, the liquid cooling device can flexibly respond to various battery temperature conditions in the energy storage system, ensure that the battery operates within an optimal operating temperature range, achieve efficient and precise operation of the liquid cooling device, and improve the efficiency, stability and safety of the energy storage system.

[0079] In some embodiments of the present application, Figure 4 As shown, in Figures 1 to 3 Based on any of the embodiments shown, after obtaining the maximum temperature and average temperature of the batteries in the energy storage system, the following may also be included:

[0080] 401. Obtain a data verification model associated with the energy storage system;

[0081] In an embodiment of the present application, a data verification model refers to an algorithm model used to verify the accuracy of relevant data in an energy storage system. For example, the data verification model may be a machine learning model. The machine learning model may be, for example, a deep learning model such as a convolutional neural network (CNN) or a recurrent neural network (RNN).

[0082] In some embodiments of the present application, the data verification model can be obtained based on the historical operation data of the energy storage system using a deep profiling algorithm. The historical operation data may include, for example, historical temperature data of the energy storage system (e.g., the highest battery temperature, the lowest battery temperature, the average battery temperature, the maximum battery temperature difference, etc. during the historical charging and discharging process and the historical static process of the energy storage system), as well as the current and voltage of the energy storage system during the historical charging and discharging process and the historical static process.

[0083] The deep profiling algorithm mainly uses advanced machine learning technology, especially deep learning models, to conduct in-depth mining of historical operating data in energy storage systems. The algorithm can automatically identify and extract key features in historical operating data, such as temperature change patterns and temperature fluctuations during historical charging and discharging processes.

[0084] The following describes the generation process of the data verification model, which specifically includes: obtaining a preset machine learning model (e.g., an untrained initial deep learning model); using the historical operating data in the energy storage system to train the machine learning model to obtain a trained model, for example, the historical operating data can be used as a training data set, or the data obtained after preprocessing such as data cleaning and normalization of the historical operating data can be used as a training data set, and used for model training of the machine learning model; using a cross-validation algorithm to verify the model performance of the trained model; after the model performance verification is passed, the trained model is used as the data verification model.

[0085] Among them, the cross-validation algorithm is used to evaluate the stability and generalization ability of the trained model. In the cross-validation algorithm, the training data set is divided into multiple subsets, and through multiple training and testing processes, it is ensured that the trained model can show good performance on different subsets. In the cross-validation algorithm, the K-fold cross-validation method is specifically adopted: first, the training data set is randomly divided into K subsets of equal size, and then K-1 subsets are selected as training sets each time, and the remaining subset is used as the test set. Finally, this process is repeated K times, and different K-1 subsets are selected as test sets each time. By calculating the average error of the K-times process, the stability and generalization ability of the model can be evaluated. For example, when the average error of the K-times process is less than the preset error threshold, it is determined that the model performance verification of the trained model has passed.

[0086] In addition, for the generated data verification model, the data verification model can be continuously optimized and improved by continuously collecting new operating data from the energy storage system.

[0087] 402. Using the data verification model, verify the data accuracy of at least one of the maximum temperature of the battery and the average temperature of the battery to obtain a data verification result;

[0088] In the embodiment of the present application, by inputting at least one of the maximum battery temperature and the average battery temperature into the data verification model, the data verification model can output a corresponding data verification result. The data verification result can be, for example, verification passed, verification failed, etc.

[0089] In some embodiments of the present application, when using a data verification model to verify the accuracy of at least one of the battery maximum temperature and the battery average temperature, at least one of the current battery maximum temperature, battery minimum temperature, battery average temperature, battery maximum temperature difference, current, voltage and other data of the energy storage system can also be input into the data verification model, and the data verification model can output the corresponding data verification result.

[0090] 403. If the data verification result is verification passed, execute the step of lowering the target liquid cooling temperature of the cooling mode if the maximum temperature of the battery is greater than or equal to a preset first cooling temperature threshold, and the average temperature of the battery is greater than or equal to a preset first average temperature threshold.

[0091] In the embodiment of the present application, if the data verification result is verification passed, it indicates that the current battery maximum temperature, battery minimum temperature, battery average temperature, battery maximum temperature difference, current, voltage and other data of the energy storage system are accurate and reliable, so the control steps for the liquid cooling device (such as step 102 and subsequent steps) can be executed. When the data verification result is verification failed, it indicates that at least one of the current battery maximum temperature, battery minimum temperature, battery average temperature, battery maximum temperature difference, current, voltage and other data of the energy storage system is not accurate and reliable, and there may be data errors or anomalies, so any control step for the liquid cooling device (such as step 102 and subsequent steps) is not executed to avoid errors in the control of the liquid cooling device and ensure the safety and reliability of the liquid cooling device.

[0092] In the second aspect, based on the liquid cooling control method of the above-mentioned embodiment, an embodiment of the present application provides a liquid cooling control device, which is used to execute the steps in any embodiment of the above-mentioned liquid cooling control method. For example, the liquid cooling control device may be a BMS (Battery Management System) device or an EMS (Energy Management System) device. In addition, the liquid cooling control device can also be used to continuously determine in real time whether the liquid cooling device is faulty, and output a warning message when the liquid cooling device fails, and stop controlling the liquid cooling device. Specifically, the liquid cooling control device may include:

[0093] A first acquisition module is used to acquire the current operation mode of the liquid cooling device of the energy storage system;

[0094] The second acquisition module is used to obtain the maximum temperature and the average temperature of the batteries in the energy storage system when the current operation mode is the cooling mode;

[0095] The parameter adjustment module is used to reduce the target liquid cooling temperature of the cooling mode if the maximum battery temperature is greater than or equal to a preset first cooling temperature threshold and the average battery temperature is greater than or equal to a preset first average temperature threshold, so that the liquid cooling device performs cooling according to the reduced target liquid cooling temperature.

[0096] In a third aspect, an embodiment of the present application provides an electronic device that integrates any one of the liquid cooling control devices provided in the embodiments of the present application. The electronic device includes a processor and a memory, the memory stores a computer program, and the computer program is configured to be executed by the processor to implement the liquid cooling control method described in any of the above embodiments, for example:

[0097] The current operating mode of the liquid cooling device of the energy storage system is obtained; when the current operating mode is the cooling mode, the maximum temperature of the battery and the average temperature of the battery in the energy storage system are obtained; if the maximum temperature of the battery is greater than or equal to a preset first cooling temperature threshold, and the average temperature of the battery is greater than or equal to a preset first average temperature threshold, the target liquid cooling temperature of the cooling mode is reduced so that the liquid cooling device performs cooling according to the reduced target liquid cooling temperature.

[0098] In a fourth aspect, an embodiment of the present application provides an electronic device that integrates any one of the liquid cooling control devices provided in the embodiments of the present application. Figure 5 As shown, it shows a schematic diagram of the structure of the electronic device involved in the embodiment of the present application, specifically:

[0099] The electronic device may include components such as a processor 501 with one or more processing cores, a storage unit 502 with one or more computer-readable storage media, a power supply 503, and an input unit 504. Those skilled in the art will appreciate that Figure 5 The electronic device structure shown in the figure does not constitute a limitation on the electronic device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0100] The processor 501 is the control center of the electronic device. It uses various interfaces and lines to connect various parts of the entire electronic device. By running or executing software programs and / or modules stored in the storage unit 502 and calling data stored in the storage unit 502, it executes various functions of the electronic device and processes data, thereby monitoring the electronic device as a whole. Optionally, the processor 501 may include one or more processing cores; preferably, the processor 501 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 501.

[0101] The storage unit 502 can be used to store software programs and modules. The processor 501 executes various functional applications and data processing by running the software programs and modules stored in the storage unit 502. The storage unit 502 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the electronic device, etc. In addition, the storage unit 502 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the storage unit 502 may also include a memory controller to provide the processor 501 with access to the storage unit 502.

[0102] The electronic device also includes a power supply 503 for supplying power to each component. Preferably, the power supply 503 can be logically connected to the processor 501 through a power management system, so as to manage charging, discharging, power consumption and other functions through the power management system. The power supply 503 can also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators and other arbitrary components.

[0103] The electronic device may further include an input unit 504, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0104] Although not shown, the electronic device may further include a display unit, etc., which will not be described in detail herein. Specifically, in the embodiment of the present application, the processor 501 in the electronic device will load the executable file corresponding to the process of one or more application programs into the storage unit 502 according to the following instructions, and the processor 501 will run the application program stored in the storage unit 502, thereby realizing various functions, such as:

[0105] The current operating mode of the liquid cooling device of the energy storage system is obtained; when the current operating mode is the cooling mode, the maximum temperature of the battery and the average temperature of the battery in the energy storage system are obtained; if the maximum temperature of the battery is greater than or equal to a preset first cooling temperature threshold, and the average temperature of the battery is greater than or equal to a preset first average temperature threshold, the target liquid cooling temperature of the cooling mode is reduced so that the liquid cooling device performs cooling according to the reduced target liquid cooling temperature.

[0106] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, which may include: a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc. The computer-readable storage medium stores a computer program, and the computer program is configured to be executed by a processor to implement the liquid cooling control method as described in any one of the above items, for example:

[0107] The current operating mode of the liquid cooling device of the energy storage system is obtained; when the current operating mode is the cooling mode, the maximum temperature of the battery and the average temperature of the battery in the energy storage system are obtained; if the maximum temperature of the battery is greater than or equal to a preset first cooling temperature threshold, and the average temperature of the battery is greater than or equal to a preset first average temperature threshold, the target liquid cooling temperature of the cooling mode is reduced so that the liquid cooling device performs cooling according to the reduced target liquid cooling temperature.

[0108] In a sixth aspect, an embodiment of the present application provides a computer program product or a computer program, the computer program product or the computer program including computer instructions, the computer instructions being stored in a computer-readable storage medium. A processor of an electronic device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the electronic device executes to implement any of the above liquid cooling control methods, for example:

[0109] The current operating mode of the liquid cooling device of the energy storage system is obtained; when the current operating mode is the cooling mode, the maximum temperature of the battery and the average temperature of the battery in the energy storage system are obtained; if the maximum temperature of the battery is greater than or equal to a preset first cooling temperature threshold, and the average temperature of the battery is greater than or equal to a preset first average temperature threshold, the target liquid cooling temperature of the cooling mode is reduced so that the liquid cooling device performs cooling according to the reduced target liquid cooling temperature.

[0110] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A liquid cooling control method, characterized in that: The liquid cooling control method comprises: Obtaining the current operating mode of the liquid cooling device of the energy storage system; When the current operating mode is a cooling mode, obtaining a maximum temperature and an average temperature of batteries in the energy storage system; If the maximum battery temperature is greater than or equal to a preset first cooling temperature threshold, and the average battery temperature is greater than or equal to a preset first average temperature threshold, the target liquid cooling temperature of the cooling mode is reduced so that the liquid cooling device performs cooling according to the reduced target liquid cooling temperature.

2. The liquid cooling control method according to claim 1, characterized in that: If the maximum temperature of the battery is greater than or equal to a preset first cooling temperature threshold, and the average temperature of the battery is greater than or equal to a preset first average temperature threshold, lowering the target liquid cooling temperature of the cooling mode includes: If the maximum battery temperature is greater than or equal to the first cooling temperature threshold and less than a preset second cooling temperature threshold, and the average battery temperature is greater than or equal to the first average temperature threshold, lowering the target liquid cooling temperature of the cooling mode to a first preset value; After obtaining the maximum temperature of the battery in the energy storage system, the method further includes: If the maximum battery temperature is greater than or equal to the second cooling temperature threshold, the target liquid cooling temperature of the cooling mode is reduced to a second preset value, wherein the second preset value is less than the first preset value.

3. The liquid cooling control method according to claim 1, characterized in that: After obtaining the maximum temperature and average temperature of the batteries in the energy storage system, the method further includes: If the maximum temperature of the battery is lower than a preset third cooling temperature threshold, or the average temperature of the battery is lower than a preset second average temperature threshold, the liquid cooling device is controlled to exit the cooling mode, wherein the third cooling temperature threshold is lower than the first cooling temperature threshold, and the second average temperature threshold is lower than the first average temperature threshold.

4. The liquid cooling control method according to claim 1, characterized in that: After obtaining the current operation mode of the liquid cooling device of the energy storage system, the method further includes: When the current operating mode is the standby mode, obtaining a maximum temperature difference of a battery in the energy storage system; If the maximum temperature difference of the battery is greater than or equal to a preset first temperature difference threshold, the liquid cooling device is controlled to switch from the standby mode to the self-circulation mode.

5. The liquid cooling control method according to claim 1, characterized in that: Before obtaining the current operation mode of the liquid cooling device of the energy storage system, the method further includes: Obtaining an average battery temperature and a maximum battery temperature difference in the energy storage system; If the average battery temperature is greater than or equal to a preset third average temperature threshold and less than the first average temperature threshold, and the maximum battery temperature difference is less than or equal to a preset second temperature difference threshold, the current operating mode is set to standby mode, wherein the second temperature difference threshold is less than the first temperature difference threshold.

6. The liquid cooling control method according to claim 1, characterized in that: Before obtaining the current operation mode of the liquid cooling device of the energy storage system, the method further includes: Obtaining the minimum temperature and average temperature of the batteries in the energy storage system; If the lowest battery temperature is lower than a preset first heating temperature threshold, and the average battery temperature is lower than a preset third average temperature threshold, the current operating mode is set to a heating mode.

7. The liquid cooling control method according to any one of claims 1 to 6, characterized in that: After obtaining the maximum temperature and average temperature of the batteries in the energy storage system, the method further includes: Obtaining a data verification model associated with the energy storage system; Using the data verification model, verifying the data accuracy of at least one of the maximum temperature of the battery and the average temperature of the battery to obtain a data verification result; If the data verification result is verification passed, execute the step of lowering the target liquid cooling temperature of the cooling mode if the maximum battery temperature is greater than or equal to the preset first cooling temperature threshold and the average battery temperature is greater than or equal to the preset first average temperature threshold.

8. The liquid cooling control method according to claim 7, characterized in that: The data verification model is generated by the following steps: Get the preset machine learning model; Using historical operating data in the energy storage system to perform model training on the machine learning model to obtain a trained model, wherein the historical operating data includes historical temperature data in the energy storage system; The trained model is subjected to model performance verification using a cross-validation algorithm, and after the model performance verification passes, the trained model is used as the data verification model.

9. An electronic device, characterized in that: The electronic device comprises a processor and a memory, wherein a computer program is stored in the memory, and the computer program is configured to be executed by the processor to implement the liquid cooling control method according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and the computer program is configured to be executed by a processor to implement the liquid cooling control method according to any one of claims 1 to 8.

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