Method, apparatus and device for controlling liquid-cooled lines in a battery energy storage system

Abstract

To provide a control method, an apparatus and a device for a liquid cooling pipeline of a battery energy storage system.SOLUTION: A method comprises: monitoring a battery energy storage system to obtain a working mode of the battery energy storage system and a first temperature of a plurality of battery cells of any one of battery clusters in the battery energy storage system; determining a thermal management mode to be turned on for the battery energy storage system and judging whether the battery energy storage system needs to perform a startup of flow control, based on the first temperature and the working mode of the plurality of battery cells in each one of the battery clusters; and in response to a fact that the battery energy storage system needs to perform the startup of the flow control, determining a target battery cluster based on the first temperature and the thermal management mode of the plurality of battery cells in each one of the battery clusters, and opening a flow control valve of a liquid cooling pipeline branch corresponding to the target battery cluster.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to the field of computer technology, and more particularly to a method, apparatus and device for controlling liquid-cooled lines in a battery energy storage system. [Background technology]

[0002] As the economics of energy storage technology improves, the role of energy storage technology in renewable energy power generation, smart power grids, and energy Internet construction becomes increasingly important. Battery energy storage systems are currently the mainstream products for realizing energy storage technology. Summary of the Invention [Problem to be solved by the invention]

[0003] A battery energy storage system is generally composed of a number of individual batteries, and the individual batteries in the battery energy storage system have the characteristics of large capacity and high power, so that a high power density can be achieved. However, due to the advantage of high power density, the battery energy storage system has high requirements for heat dissipation, but there is a problem that the individual batteries are prone to heat generation inside the battery energy storage system. By effectively controlling the temperature of the battery energy storage system, the service life and safety performance of the battery energy storage system can be improved.

[0004] In the related art, the flow rate of the cooling liquid in the liquid-cooled pipes of the battery energy storage system can be distributed to help control the demand for the temperature of the multiple individual batteries in the battery energy storage system to reach an average temperature. How to control the liquid-cooled pipes of the battery energy storage system is very important. [Means for solving the problem]

[0005] The present disclosure aims to solve at least one of the technical problems in the related art to some extent.

[0006] The present disclosure proposes a method, apparatus, and device for controlling a liquid-cooled pipe of a battery energy storage system, which can automatically identify a target battery cluster that requires flow control based on the operating mode of the battery energy storage system and the first temperature of each individual battery, and which can effectively control the flow rate of the liquid-cooled pipe branch corresponding to the target battery cluster, thereby effectively improving the temperature difference between the battery clusters.

[0007] An embodiment of the first aspect of the present disclosure includes: monitoring the battery energy storage system to obtain an operating mode of the battery energy storage system and a first temperature of a plurality of individual batteries of any one of the battery clusters of the battery energy storage system; Determine a thermal management scheme to be turned on by the battery energy storage system according to a first temperature of each of the plurality of individual batteries of the battery cluster and the operation mode, and determine whether the battery energy storage system needs to perform a flow control; A method for controlling a liquid-cooled pipe of a battery energy storage system is proposed, which includes: determining a target battery cluster based on a first temperature of a plurality of individual batteries in each of the battery clusters and the thermal management method in response to the need for the battery energy storage system to perform flow control on; and opening a flow control valve of a liquid-cooled pipe branch corresponding to the target battery cluster.

[0008] The liquid-cooled pipe control method of the battery energy storage system of the embodiment of the present disclosure includes: monitoring the battery energy storage system to obtain the operation mode of the battery energy storage system and the first temperature of the multiple individual batteries of any one of the battery clusters of the battery energy storage system; determining a thermal management method to be turned on by the battery energy storage system according to the first temperature and the operation mode of the multiple individual batteries of each battery cluster; determining whether the battery energy storage system needs to turn on the flow control; determining a target battery cluster according to the first temperature and the thermal management method of the multiple individual batteries of each battery cluster according to the need to turn on the flow control; and opening the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster. Thus, the target battery cluster requiring the flow control can be automatically identified according to the operation mode of the battery energy storage system and the first temperature of each individual battery, and the flow rate of the liquid-cooled pipe branch corresponding to the target battery cluster can be effectively controlled, and the temperature difference between the battery clusters can be effectively improved.

[0009] An embodiment of the second aspect of the present disclosure includes: a first monitoring module that monitors the battery energy storage system to obtain an operating mode of the battery energy storage system and a first temperature of a plurality of individual batteries of any one of the battery clusters of the battery energy storage system; a processing module that determines a thermal management scheme to be turned on for the battery energy storage system based on a first temperature of each of the plurality of individual batteries of the battery cluster and the operating mode; a first determination module for determining whether the battery energy storage system needs to perform flow control on; A control device for a liquid-cooled pipe of a battery energy storage system is proposed, which includes a processing module that determines a target battery cluster based on a first temperature of a plurality of individual batteries of each of the battery clusters and the thermal management method in response to the need for the battery energy storage system to perform flow control on, and opens a flow control valve of a liquid-cooled pipe branch corresponding to the target battery cluster.

[0010] The control device of the liquid-cooled pipe of the battery energy storage system of the embodiment of the present disclosure monitors the battery energy storage system to obtain the operation mode of the battery energy storage system and the first temperature of the multiple individual batteries of any one of the battery clusters of the battery energy storage system, determines the thermal management method to be turned on by the battery energy storage system based on the first temperature and the operation mode of the multiple individual batteries of each battery cluster, judges whether the battery energy storage system needs to execute the flow control on, and determines a target battery cluster based on the first temperature and the thermal management method of the multiple individual batteries of each battery cluster according to the need to execute the flow control on, and opens the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster. Thus, the target battery cluster requiring the flow control can be automatically identified based on the operation mode of the battery energy storage system and the first temperature of each individual battery, and the flow rate of the liquid-cooled pipe branch corresponding to the target battery cluster can be effectively controlled, and the temperature difference between the battery clusters can be effectively improved.

[0011] An embodiment of a third aspect of the present disclosure proposes an electronic device including a memory, a processor, and a computer program stored in the memory and executable by the processor, the processor, when executing the program, realizing the method for controlling a liquid-cooled pipe of a battery energy storage system proposed in the embodiment of the first aspect of the present disclosure.

[0012] An embodiment of a fourth aspect of the present disclosure proposes a non-transitory computer-readable storage medium storing a computer program which, when executed by a processor, realizes the method for controlling a liquid-cooled pipe of a battery energy storage system proposed in the embodiment of the first aspect of the present disclosure.

[0013] An embodiment of a fifth aspect of the present disclosure proposes a computer program product which, when instructions therein are executed by a processor, performs the method for controlling a liquid-cooled line of a battery energy storage system proposed in the embodiment of the first aspect of the present disclosure.

[0014] Additional aspects and advantages of the disclosure will be set forth in part in the description that follows, and in part will be obvious from the following description, or may be learned by practice of the disclosure. [Brief description of the drawings]

[0015] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following detailed description of the embodiments based on the accompanying drawings.

[0016] [Figure 1] 1 is a flowchart of a control method for a liquid-cooled pipe of a battery energy storage system provided in Example 1 of the present disclosure.

[0017] [Diagram 2] FIG. 2 is a schematic diagram of the liquid-cooled piping of the battery energy storage system provided in the present disclosure.

[0018] [Diagram 3] 1 is a flowchart of a control method for a liquid-cooled pipe of a battery energy storage system provided in Example 2 of the present disclosure.

[0019] [Figure 4] 1 is a flowchart of a control method for a liquid-cooled pipe of a battery energy storage system provided in Example 3 of the present disclosure.

[0020] [Diagram 5] 1 is a flowchart of a control method for a liquid-cooled pipe of a battery energy storage system provided in Example 4 of the present disclosure.

[0021] [Figure 6] 1 is a schematic diagram of a control system for the liquid-cooled lines of the battery energy storage system provided in the present disclosure.

[0022] [Figure 7]FIG. 11 is a structural schematic diagram of the control device of the liquid-cooled pipe of the battery energy storage system provided in Example 5 of the present disclosure.

[0023] [Figure 8] FIG. 1 is a schematic block diagram illustrating an example electronic device that can be used to implement embodiments of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, the embodiments of the present disclosure will be described in detail. The examples of the present disclosure are illustrated in the drawings in which the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are illustrative for explaining the present disclosure and cannot be understood as limitations to the present disclosure.

[0025] The inside of the battery energy storage system is configured with multiple battery clusters in parallel, and each battery cluster is configured with multiple battery modules. When controlling the liquid cooling pipe of the battery energy storage system, the coolant flow rate of the liquid cooling pipe is usually distributed in the liquid cooling pipe according to the requirement of the average temperature of the battery. However, since the liquid cooling pipe of the battery energy storage system is designed for average temperature based on the complete arrangement of the battery modules and the matching of the battery state, when faced with the customized requirements for the capacity of the battery energy storage system of different users, such as the need to reduce the arrangement of one or more battery modules for a certain battery cluster, or the need to expand the battery energy storage system, the requirements for cooling or heat dissipation of each battery cluster will not match, and the flow rate distribution in the designed liquid cooling pipe will affect the average temperature of the single battery.

[0026] In response to the above problems, the present disclosure proposes a method, apparatus and device for controlling the liquid-cooled lines of a battery energy storage system.

[0027] Hereinafter, with reference to the drawings, a method, apparatus, and device for controlling a liquid-cooled pipe of a battery energy storage system according to an embodiment of the present disclosure will be described.

[0028] FIG. 1 is a flowchart of a control method for a liquid-cooled pipe of a battery energy storage system provided in Example 1 of the present disclosure.

[0029] The embodiments of the present disclosure are described by taking as an example that the control method for the liquid-cooled pipe of a battery energy storage system is disposed in a control device for the liquid-cooled pipe of the battery energy storage system, and this control device for the liquid-cooled pipe of the battery energy storage system can be applied to any electronic device so that the electronic device can perform the control function of the liquid-cooled pipe of the battery energy storage system.

[0030] Here, the electronic device may be any device having computing capabilities, such as a personal computer (abbreviated as PC), a mobile terminal, a server, etc., and the mobile terminal may be a hardware device equipped with various operating systems, touch screens, and / or displays, such as a mobile phone, a tablet, a personal digital assistant, a wearable device, etc.

[0031] As shown in FIG. 1, the control method for the liquid-cooled pipe of the battery energy storage system may include the following steps.

[0032] In step 101, the battery energy storage system is monitored to obtain an operation mode of the battery energy storage system and a first temperature of a plurality of individual batteries in any one battery cluster of the battery energy storage system.

[0033] In the embodiments of the present disclosure, the number of battery clusters in the battery energy storage system is not limited to one, but the present disclosure is not limited thereto.

[0034] In an embodiment of the present disclosure, each battery cluster in the battery energy storage system may include multiple battery cells, and the number of battery cells included in each battery cluster may be the same or different, but the present disclosure is not limited thereto.

[0035] In the embodiment of the present disclosure, the operation mode may include a stationary mode, a charging mode, and a discharging mode. Thus, the operation mode of the battery energy storage system may be a stationary mode, a charging mode, or a discharging mode.

[0036] In an embodiment of the present disclosure, by monitoring the battery energy storage system, an operating mode of the battery energy storage system can be obtained, and a first temperature of any one of the individual batteries in any one of the battery clusters of the battery energy storage system can be obtained.

[0037] In step 102, based on the first temperatures and operating modes of the multiple individual batteries in each battery cluster, determine a thermal management scheme to be turned on by the battery energy storage system, and determine whether the battery energy storage system needs to perform flow control on.

[0038] In an embodiment of the present disclosure, based on the first temperature and operating mode of the multiple individual batteries in each battery cluster, the thermal management scheme to be turned on by the battery energy storage system can be determined, and whether the battery energy storage system needs to perform flow control on can be determined.

[0039] In step 103, according to the need of the battery energy storage system to perform flow control on, a target battery cluster is determined based on the first temperature and thermal management method of the multiple batteries in each battery cluster, and the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster is opened.

[0040] In the embodiments of the present disclosure, any one of the battery clusters may have a flow control valve for a corresponding liquid-cooled pipe branch.

[0041] As an example, the liquid-cooled pipeline of a battery energy storage system is shown in Figure 2. As shown in Figure 2, 21 in the figure is a liquid-cooled unit, 22 in the figure is a liquid-cooled outflow pipeline, 23 in the figure is a liquid-cooled return water pipeline, 24 in the figure is a battery module (each battery module includes multiple individual batteries), 25 in the figure is the 1# battery cluster, 26 in the figure is the 2# battery cluster, 27 in the figure is the 3# battery cluster, 28 in the figure is the 4# battery cluster, and 29 in the figure is a flow control valve for the liquid-cooled pipeline branch corresponding to the 4# battery cluster.

[0042] In an embodiment of the present disclosure, when the battery energy storage system needs to perform flow control on, a target battery cluster requiring flow control can be determined based on the first temperature and thermal management method of the multiple individual batteries in each battery cluster, and the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster can be opened.

[0043] The liquid-cooled pipe control method of the battery energy storage system of the embodiment of the present disclosure includes: monitoring the battery energy storage system to obtain the operation mode of the battery energy storage system and the first temperature of the multiple individual batteries of any one of the battery clusters of the battery energy storage system; determining a thermal management method to be turned on by the battery energy storage system according to the first temperature and the operation mode of the multiple individual batteries of each battery cluster; determining whether the battery energy storage system needs to turn on the flow control; determining a target battery cluster according to the first temperature and the thermal management method of the multiple individual batteries of each battery cluster according to the need to turn on the flow control; and opening the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster. Thus, the target battery cluster requiring the flow control can be automatically identified according to the operation mode of the battery energy storage system and the first temperature of each individual battery, and the flow rate of the liquid-cooled pipe branch corresponding to the target battery cluster can be effectively controlled, and the temperature difference between the battery clusters can be effectively improved.

[0044] In the above embodiments of the present disclosure, in order to clearly explain how the battery energy storage system determines the thermal management method to be turned on based on the first temperature and operating mode of the multiple individual batteries in each battery cluster, the present disclosure also proposes a control method for the liquid-cooled pipes of the battery energy storage system.

[0045] FIG. 3 is a flowchart of a control method for a liquid-cooled pipe of a battery energy storage system provided in Example 2 of the present disclosure.

[0046] As shown in FIG. 3, the control method for the liquid-cooled pipe of the battery energy storage system may include the following steps.

[0047] In step 301, the battery energy storage system is monitored to obtain an operation mode of the battery energy storage system and a first temperature of the plurality of individual batteries in any one battery cluster of the battery energy storage system.

[0048] The execution process of step 301 can refer to the execution process of any one of the embodiments of the present disclosure, so the description will be omitted here.

[0049] In step 302, a first target characteristic of the battery energy storage system is obtained based on first temperatures of the multiple individual batteries in each battery cluster, the first target characteristic including at least one of a first individual battery maximum temperature, a first individual battery minimum temperature, a first battery system average temperature, and a battery system minimum temperature difference.

[0050] In an embodiment of the present disclosure, the first maximum battery unit temperature may indicate the maximum value of the first temperature of the battery unit in the battery energy storage system.

[0051] In an embodiment of the present disclosure, the first minimum battery temperature may indicate the minimum value of the first temperature of the battery in the battery energy storage system.

[0052] In an embodiment of the present disclosure, the first battery system average temperature may indicate an average value of a first temperature of a single battery in the battery energy storage system.

[0053] In embodiments of the present disclosure, the battery system minimum temperature difference may refer to the minimum temperature difference between individual batteries in a battery energy storage system.

[0054] In an embodiment of the present disclosure, a first target characteristic of the battery energy storage system can be obtained based on first temperatures of the multiple individual batteries in each battery cluster, including at least one of the first individual battery maximum temperature, the first individual battery minimum temperature, the first battery system average temperature, and the battery system minimum temperature difference.

[0055] In step 303, it is determined whether the battery energy storage system needs to turn on thermal management based on the first target characteristic and the operation mode.

[0056] In an embodiment of the present disclosure, based on the first target characteristic and the operation mode, it can be determined whether the battery energy storage system needs to turn on thermal management.

[0057] As one possible embodiment, based on a first target characteristic and an operating mode, it can be determined whether the battery energy storage system meets a first set condition, and if the battery energy storage system meets the set condition, it can be determined that the battery energy storage system needs to turn on thermal management.

[0058] In the embodiment of the present disclosure, the first setting condition may be set in advance.

[0059] As an example, the first setting conditions in different operation modes are shown in Table 1.

[0060] [Table 1]

[0061] As shown in Table 1, when the operating mode of the battery energy storage system is a stationary mode, if the battery energy storage system meets the following: the minimum temperature of the first battery alone is below -20°C and the average temperature of the first battery system is below -10°C, or the maximum temperature of the first battery alone is above 45°C and the average temperature of the first battery system is above 35°C, or the minimum temperature difference of the battery system is above 15°C, the battery energy storage system can determine that thermal management needs to be turned on.

[0062] When the operating mode of the battery energy storage system is a charging mode, if the battery energy storage system satisfies that the minimum temperature of the first battery alone is below 10°C and the average temperature of the first battery system is below 20°C, or the maximum temperature of the first battery alone is above 45°C and the average temperature of the first battery system is above 35°C, or the minimum temperature difference of the battery system is above 15°C, it can determine that the battery energy storage system needs to turn on thermal management.

[0063] When the operating mode of the battery energy storage system is a discharge mode, if the battery energy storage system satisfies that the minimum temperature of the first battery alone is below 5°C and the average temperature of the first battery system is below 15°C, or the maximum temperature of the first battery alone is above 45°C and the average temperature of the first battery system is above 35°C, or the minimum temperature difference of the battery system is above 15°C, it can determine that the battery energy storage system needs to turn on thermal management.

[0064] It should be noted that the above-mentioned settings of the first setting conditions in different operating modes are merely exemplary, and in actual applications, the first setting conditions in different operating modes can be set as needed, and the present disclosure is not limited thereto.

[0065] In step 304, if the battery energy storage system determines that thermal management needs to be turned on, the battery energy storage system determines the thermal management scheme to turn on, and determines whether the battery energy storage system needs to perform flow control on.

[0066] It should be noted that in the present disclosure, the thermal management scheme can be heating management, or cooling management, or self-circulating management.

[0067] In an embodiment of the present disclosure, if the battery energy storage system determines that thermal management needs to be turned on, the battery energy storage system can determine which thermal management scheme to turn on.

[0068] As one possible embodiment, when the battery energy storage system determines that thermal management needs to be turned on, the battery energy storage system can determine the thermal management scheme to turn on based on a first set condition satisfied by the battery energy storage system and the operating mode of the battery energy storage system.

[0069] Taking the above example as an example, the thermal management schemes that the battery energy storage system will turn on under different operating modes and first set conditions are shown in Table 2.

[0070] [Table 2]

[0071] It should be noted that the examples of thermal management schemes that the battery energy storage system turns on under the above different operating modes and first setting conditions are merely illustrative, and in actual applications, the thermal management schemes to be turned on can be set as needed, and the present disclosure is not limited thereto.

[0072] In an embodiment of the present disclosure, it may also be possible to determine whether the battery energy storage system needs to implement flow control on.

[0073] In step 305, according to the need of the battery energy storage system to perform flow control on, a target battery cluster is determined based on the first temperature and thermal management method of the multiple batteries in each battery cluster, and the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster is opened.

[0074] The execution process of step 305 can refer to the execution process of any one of the embodiments of the present disclosure, and the description is omitted here.

[0075] A method for controlling a liquid-cooled pipe of a battery energy storage system according to an embodiment of the present disclosure includes obtaining a first target characteristic of the battery energy storage system based on a first temperature of a plurality of individual batteries in each battery cluster, the first target characteristic including at least one of a maximum temperature of the first individual battery, a minimum temperature of the first individual battery, an average temperature of the first battery system, and a minimum temperature difference of the battery system, determining whether the battery energy storage system needs to turn on thermal management based on the target characteristic and an operation mode, and determining a thermal management method to be turned on by the battery energy storage system if it is determined that the battery energy storage system needs to turn on thermal management. Thus, the thermal management method to be turned on by the battery energy storage system can be effectively determined based on the first target characteristic and the operation mode of the battery energy storage system.

[0076] In any one embodiment of the present disclosure, in order to clearly explain how to determine whether the battery energy storage system needs to execute flow control on, the present disclosure also proposes a control method for the liquid-cooled pipe of the battery energy storage system.

[0077] FIG. 4 is a flowchart of a control method for a liquid-cooled pipe of a battery energy storage system provided in Example 3 of the present disclosure.

[0078] As shown in FIG. 4, the control method for the liquid-cooled pipe of the battery energy storage system may include the following steps.

[0079] In step 401, the battery energy storage system is monitored to obtain an operation mode of the battery energy storage system and a first temperature of a plurality of individual batteries in any one battery cluster of the battery energy storage system.

[0080] In step 402, the battery energy storage system determines a thermal management scheme to be turned on based on a first temperature and an operation mode of the plurality of individual batteries in each battery cluster.

[0081] The execution process of steps 401 to 402 can refer to the execution process of any one of the embodiments of the present disclosure, and the description thereof will be omitted here.

[0082] In step 403, for any one battery cluster, a first average temperature of the battery cluster is determined based on first temperatures of the individual batteries of the battery cluster.

[0083] In an embodiment of the present disclosure, for any one battery cluster, a first average temperature of the battery cluster can be determined based on the first temperatures of the plurality of individual batteries of the battery cluster. For example, the first average temperature of the battery cluster can be obtained by taking a weighted average of the first temperatures of the plurality of individual batteries of the battery cluster.

[0084] In step 404, it is determined whether the battery energy storage system needs to perform flow control on based on the first average temperature of each battery cluster.

[0085] As one possible embodiment, based on the first average temperature of each battery cluster, it can be determined whether a first battery cluster pair exists in the battery energy storage system, in which a first temperature difference indicating a difference between the first average temperatures of the first battery clusters is greater than or equal to a first set value, and in response to the presence of the first battery cluster pair in the battery energy storage system, it can be determined that the battery energy storage system needs to perform flow control on.

[0086] In the embodiment of the present disclosure, the first set value may be preset, for example, 10° C., 11° C., etc., and the present disclosure is not limited thereto.

[0087] In an embodiment of the present disclosure, a first temperature difference of the first cell cluster in the first cell cluster pair may be greater than or equal to a first set value.

[0088] Here, the first battery cluster may be a battery cluster in the first battery cluster pair.

[0089] Here, the first temperature difference may indicate a difference between the first average temperatures of the first battery clusters. Note that the first temperature difference may be a difference between the first average temperatures of the first battery clusters, or an absolute value of the difference between the first average temperatures of the first battery clusters, and the present disclosure is not limited thereto.

[0090] Therefore, in the present disclosure, based on the first average temperature of each battery cluster, it can be determined whether a first battery cluster pair is present in the battery energy storage system, and if the first battery cluster pair is present in the battery energy storage system, it can be determined that the battery energy storage system needs to perform flow control on.

[0091] In step 405, according to the need of the battery energy storage system to perform flow control on, a target battery cluster is determined based on the first temperature and thermal management method of the multiple batteries in each battery cluster, and the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster is opened.

[0092] The execution process of step 405 can refer to the execution process of any one of the embodiments of the present disclosure, so the description will be omitted here.

[0093] When it is determined that the thermal management method is heating management, in one possible embodiment of the embodiment of the present disclosure, according to the need for the battery energy storage system to perform flow control on, a target battery cluster with the largest first average temperature can be determined from each battery cluster based on the first average temperature of each battery cluster, and the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster can be opened.

[0094] As an example, when it is determined that the thermal management method is heating management, assuming that the battery energy storage system needs to perform flow control on, the battery energy storage system includes a battery cluster 1 having a first average temperature a, a battery cluster 2 having a first average temperature b, a battery cluster 3 having a first average temperature c, and a battery cluster 4 having a first average temperature d, and based on the first average temperature of each battery cluster, a target battery cluster having the highest first average temperature can be determined from each battery cluster. For example, when it is determined that the target battery cluster having the highest first average temperature is battery cluster 2, the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster, battery cluster 2, can be opened.

[0095] When it is determined that the thermal management method is cooling management, in one possible embodiment of the embodiment of the present disclosure, in response to the battery energy storage system needing to perform flow control on, based on the first average temperature of each battery cluster, a target battery cluster with the smallest first average temperature is determined from each battery cluster, and the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster is opened.

[0096] As an example, when it is determined that the thermal management method is cooling management, assuming that the battery energy storage system needs to perform flow control on, the battery energy storage system includes a battery cluster 1 having a first average temperature a, a battery cluster 2 having a first average temperature b, a battery cluster 3 having a first average temperature c, and a battery cluster 4 having a first average temperature d, and based on the first average temperature of each battery cluster, a target battery cluster having the smallest first average temperature can be determined from each battery cluster. For example, when it is determined that the target battery cluster having the smallest first average temperature is battery cluster 4, the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster, battery cluster 4, can be opened.

[0097] If it is determined that the thermal management method is self-cycling management, in one possible embodiment of the present disclosure, the battery energy storage system does not need to perform subsequent flow control.

[0098] This allows for effective control of the liquid cooling lines of the battery energy storage system.

[0099] The liquid-cooled pipe control method of the battery energy storage system of the embodiment of the present disclosure determines a first average temperature of the battery cluster for any one of the battery clusters based on a first temperature of a plurality of individual batteries in the battery cluster, and determines whether the battery energy storage system needs to turn on the flow control based on the first average temperature of each battery cluster, thereby realizing the determination of whether the battery energy storage system needs to turn on the flow control based on the first average temperature of each battery cluster.

[0100] It can also be understood that after the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster is opened, the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster of the battery energy storage system is determined to be closed based on the change in temperature of the battery cluster in the battery energy storage system. The above process will now be described in detail with reference to FIG. 4.

[0101] FIG. 5 is a flowchart of a control method for a liquid-cooled pipe of a battery energy storage system provided in Example 4 of the present disclosure.

[0102] As shown in FIG. 5, the control method for the liquid-cooled pipe of the battery energy storage system may include the following steps.

[0103] In step 501, the battery energy storage system is monitored to obtain an operation mode of the battery energy storage system and a first temperature of a plurality of individual batteries in any one battery cluster of the battery energy storage system.

[0104] In step 502, based on the first temperatures and operating modes of the multiple individual batteries in each battery cluster, determine a thermal management scheme to be turned on by the battery energy storage system, and determine whether the battery energy storage system needs to perform flow control on.

[0105] In step 503, according to the need of the battery energy storage system to perform flow control on, a target battery cluster is determined based on the first temperature and thermal management method of the multiple batteries in each battery cluster, and the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster is opened.

[0106] The execution process of steps 501 to 503 can refer to the execution process of any one of the embodiments of the present disclosure, and therefore a description thereof will be omitted here.

[0107] In step 504, the battery energy storage system continues to be monitored to obtain a second temperature of the individual batteries of any one of the battery clusters of the energy storage system.

[0108] In an embodiment of the present disclosure, the battery energy storage system can be continuously monitored to obtain a second temperature of the individual batteries of any one of the battery clusters of the battery energy storage system.

[0109] In step 505, it is determined whether the battery energy storage system needs to perform flow control off based on the second temperatures of the multiple individual batteries in each battery cluster.

[0110] When the thermal management method is heating management or cooling management, one possible embodiment is to determine, for any one of the battery clusters, a second average temperature of the battery cluster based on second temperatures of the multiple individual batteries in the battery cluster, and determine whether the battery energy storage system needs to perform turning off the flow control based on the second average temperature of each battery cluster.

[0111] In an embodiment of the present disclosure, for any one battery cluster, a second average temperature of the battery cluster can be determined based on the second temperatures of the multiple individual batteries in the battery cluster, for example, the second average temperature of the battery cluster can be obtained by taking a weighted average of the second temperatures of the multiple individual batteries in the battery cluster.

[0112] In an embodiment of the present disclosure, it can be determined whether the battery energy storage system needs to perform flow control off based on the second average temperature of each battery cluster.

[0113] As one possible embodiment, for any two battery clusters, a second temperature difference indicating a difference between the second average temperatures of any two battery clusters can be obtained based on the second average temperatures of any two battery clusters, and in response to each second temperature difference being less than or equal to a second set value, it is determined that the battery energy storage system needs to perform turning off of the flow control.

[0114] In addition, the second temperature difference may be the difference between the second average temperatures of any two battery clusters, or may be the absolute value of the difference between the second average temperatures of any two battery clusters, and the present disclosure is not limited thereto.

[0115] In an embodiment of the present disclosure, the second set value may be preset, for example, 5° C., 6° C., etc., and the present disclosure is not limited thereto.

[0116] In an embodiment of the present disclosure, for any two battery clusters, a second temperature difference can be obtained based on a second average temperature of any two battery clusters, and if each second temperature difference is less than or equal to a second set value, it can be determined that the battery energy storage system needs to perform turning off the flow control.

[0117] When it is determined that the thermal management method is self-cycling management, if the battery energy storage system does not need to perform flow control on, it can be understood that, correspondingly, the battery energy storage system also does not need to perform flow control off.

[0118] In step 506, according to the need for the battery energy storage system to perform turning off the flow control, close the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster, and determine whether the battery energy storage system needs to turn off the thermal management method.

[0119] In an embodiment of the present disclosure, when the battery energy storage system determines that it is necessary to perform turning off the flow control, the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster can be closed, and it can be determined whether the battery energy storage system needs to turn off the thermal management method.

[0120] To clearly explain how the battery energy storage system determines whether the thermal management method needs to be turned off, in one possible embodiment of the embodiment of the present disclosure, a second target characteristic of the battery energy storage system can be obtained based on the second temperatures of the multiple individual batteries in each battery cluster, including at least one of the second individual battery maximum temperature, the second individual battery minimum temperature, the second battery system average temperature, and the maximum battery system temperature difference, and based on the second target characteristic, the thermal management method, and the operating mode, it is determined whether the battery energy storage system needs to turn off the thermal management method.

[0121] In an embodiment of the present disclosure, the second maximum battery unit temperature may indicate the maximum value of the second temperature of the battery unit in the battery energy storage system.

[0122] In an embodiment of the present disclosure, the second minimum battery temperature may indicate the minimum value of the second temperature of the battery in the battery energy storage system.

[0123] In an embodiment of the present disclosure, the second battery system average temperature may indicate an average value of the second temperature of the individual batteries in the battery energy storage system.

[0124] In embodiments of the present disclosure, the battery system maximum temperature difference may refer to the maximum temperature difference between individual batteries in a battery energy storage system.

[0125] Therefore, in the present disclosure, a second target characteristic of the battery energy storage system can be obtained based on the second temperatures of the multiple battery units in each battery cluster, including at least one of the second battery unit maximum temperature, the second battery unit minimum temperature, the second battery system average temperature, and the battery system maximum temperature difference.

[0126] In an embodiment of the present disclosure, based on the second target characteristic, the thermal management scheme and the operation mode, it can be determined whether the battery energy storage system needs to turn off the thermal management scheme.

[0127] As one possible example, a second setting condition corresponding to the thermal management method and the operating mode can be determined based on the thermal management method and the operating mode, and it can be determined whether the battery energy storage system satisfies the second setting condition corresponding to the thermal management method and the operating mode based on the second target characteristic, and if the battery energy storage system satisfies the second setting condition corresponding to the thermal management method and the operating mode, it can be determined that the battery energy storage system needs to turn off the thermal management method.

[0128] In an embodiment of the present disclosure, the second setting condition may be set in advance.

[0129] In an embodiment of the present disclosure, the thermal management method and the operating mode have corresponding second setting conditions, and a correspondence relationship between the thermal management method, the operating mode, and the second setting conditions can be established in advance. Therefore, after determining the thermal management method and the operating mode, the second setting conditions corresponding to the thermal management method and the operating mode can be determined by consulting the above correspondence relationship.

[0130] As an example, the second setting conditions corresponding to the thermal management methods and operation modes are shown in Table 3.

[0131] [Table 3]

[0132] It should be noted that the above examples of second setting conditions corresponding to the thermal management methods and operating modes are merely illustrative, and in actual applications, second setting conditions corresponding to the thermal management methods and operating modes can be set as necessary, and the present disclosure is not limited thereto.

[0133] As an example, assuming that the operating mode is a charging mode and the thermal management mode is cooling management, based on the above operating mode and thermal management mode, it can be determined that the corresponding second setting condition is that the maximum temperature of the second battery alone is not more than 35°C and the average temperature of the second battery system is not more than 25°C, and if it is determined based on the second target characteristic that the battery energy storage system meets this second setting condition, it can be determined that the battery energy storage system needs to turn off the thermal management method.

[0134] In step 507, in response to the battery energy storage system requiring the thermal management scheme to be turned off, the thermal management scheme is turned off.

[0135] In an embodiment of the present disclosure, if the battery energy storage system requires the thermal management scheme to be turned off, the thermal management scheme can be turned off.

[0136] The liquid-cooled pipe control method of the battery energy storage system of the embodiment of the present disclosure continues to monitor the battery energy storage system to obtain the second temperature of the multiple individual batteries of any one of the battery clusters of the battery energy storage system, and judges whether the battery energy storage system needs to execute the flow control off according to the second temperature of the multiple individual batteries of each battery cluster, turns off the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster according to the battery energy storage system needs to execute the flow control off, judges whether the battery energy storage system needs to turn off the thermal management method, and turns off the thermal management method according to the battery energy storage system needs to turn off the thermal management method. Thus, the flow rate of the liquid-cooled pipe branch of the battery energy storage system can be effectively controlled according to the operation mode, the thermal management method, and the second temperature of each individual battery of the battery energy storage system.

[0137] In order to clearly explain the above embodiments of the present disclosure, detailed descriptions are given below based on examples.

[0138] As an application scenario, the control method for liquid-cooled pipes of a battery energy storage system disclosed herein is exemplified by being applied to a control system for liquid-cooled pipes of a battery energy storage system, which may include a liquid cooling unit, a BAU (Battery Array Unit), a BCU (Battery Control Unit), and a BMU (Battery Management Unit), as shown in FIG. 6.

[0139] First, the control system of the liquid-cooled pipe of the battery energy storage system can obtain a first temperature of the plurality of individual batteries in any one of the battery clusters of the battery energy storage system through the BAU, and calculate T max1 (In this disclosure, this is referred to as the maximum temperature of the first battery alone), T min1 (In this disclosure, this is referred to as the minimum temperature of the first battery alone), T avg1 (In this disclosure, this will be referred to as the first battery system average temperature), T diff-min (referred to as the battery system minimum temperature difference in this disclosure) is determined.

[0140] Next, the above T max1 , T min1 , T avg1 , T diff-min Based on this, it can be determined whether the battery energy storage system satisfies the first set condition, and if the first set condition is satisfied, as shown in Table 1, it can be determined that the battery energy storage system needs to turn on thermal management, and based on the operating mode of the battery energy storage system and the first set condition being satisfied, it can be determined which thermal management scheme to turn on, as shown in Table 2.

[0141] In the process of turning on the thermal management, for any one battery cluster, the T c-avg1 (referred to as the first average temperature in this disclosure) can be obtained, and T c-avg1Based on the battery energy storage system, the first battery cluster T c-avg1 It can be determined whether a first battery cluster pair exists in which a first temperature difference indicating a difference between them is equal to or greater than a first set value (e.g., 10°C), and in response to the first battery cluster pair being present in the battery energy storage system, it can be determined that the battery energy storage system needs to perform flow control on.

[0142] And when it is determined that the thermal management method is heating management, the BAU determines that the battery energy storage system needs to perform flow control on, and accordingly, the T c-avg1 Based on this, T c-avg1 A target battery cluster having the largest flow rate can be determined, and a controller area network (CAN) command can be sent to the BCU to open the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster. If it is determined that the thermal management method is cooling management, the BAU determines the T of each battery cluster according to the need for the battery energy storage system to perform flow control on. c-avg1 Based on this, T c-avg1 A target battery cluster having the smallest flow rate can be determined, and a CAN command can be sent to the BCU to open the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster.

[0143] If the thermal management method is determined to be self-cycling management, the battery energy storage system does not need to perform subsequent flow control.

[0144] In response to the above, after opening the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster, the battery energy storage system can be continuously monitored to obtain a second temperature of the plurality of individual batteries in any one of the battery clusters of the battery energy storage system. For any one of the battery clusters, a T c-avg2(referred to as the second average temperature in this disclosure) can be obtained, and for any two battery clusters, T c-avg2 Based on the T of any two battery clusters c-avg2 A second temperature difference indicating the difference between the first and second temperature differences can be obtained, and if each second temperature difference is less than or equal to a second set value (e.g., 5°C), it can be determined that the battery energy storage system needs to perform flow control off.

[0145] Then, according to the need for the battery energy storage system to perform turning off the flow control, the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster can be closed to determine whether the battery energy storage system needs to turn off the thermal management method.

[0146] Specifically, T is calculated by BAU calculation based on the second temperatures of the multiple individual batteries in each battery cluster. max2 (In this disclosure, this is referred to as the maximum temperature of the second battery alone), T min2 (In this disclosure, this is referred to as the lowest temperature of the second battery alone), T avg2 (In this disclosure, this will be referred to as the second battery system average temperature), T diff-max (referred to as the maximum temperature difference of the battery system in this disclosure), and based on the thermal management method and the operating mode, determine a second setting condition corresponding to the thermal management method and the operating mode. As shown in Table 3, based on the second target characteristic, it can be determined whether the battery energy storage system satisfies the second setting condition corresponding to the thermal management method and the operating mode, and if the battery energy storage system satisfies the second setting condition corresponding to the thermal management method and the operating mode, it can be determined that the battery energy storage system needs to turn off the thermal management method.

[0147] Finally, in response to the battery energy storage system needing the thermal management scheme to be turned off, the thermal management scheme is turned off.

[0148] Furthermore, when it is determined that the thermal management method is self-circulating management, the battery energy storage system does not need to turn on the flow control, and correspondingly, the battery energy storage system does not need to turn off the flow control. Only when the battery energy storage system determines that it is necessary to turn off the thermal management method, does it need to turn off the corresponding thermal management method.

[0149] The control method of the liquid-cooled pipes of the battery energy storage system disclosed herein can effectively solve the problem of temperature difference between different battery clusters, and can shorten the on-time of thermal management, help improve thermal management efficiency, reduce the power consumption of the battery energy storage system, and improve the energy conversion efficiency.

[0150] As described above, the liquid-cooled pipe control method of the battery energy storage system disclosed herein can determine a target battery cluster whose temperature rises too quickly during heating or whose temperature drops too quickly during freezing through real-time control of the flow rate distribution of the liquid-cooled pipe branches, and can reduce the flow rate of the liquid-cooled pipe branch corresponding to the target battery cluster, improve the temperature difference between battery clusters in the entire battery system, and effectively shorten the thermal management time.

[0151] Corresponding to the control method of the liquid-cooled pipe of the battery energy storage system provided in the embodiment of Figure 1 to Figure 5 above, the present disclosure further provides a control device of the liquid-cooled pipe of the battery energy storage system. The control device of the liquid-cooled pipe of the battery energy storage system provided in the embodiment of the present disclosure corresponds to the control method of the liquid-cooled pipe of the battery energy storage system provided in the embodiment of Figure 1 to Figure 5 above, so the embodiment of the control method of the liquid-cooled pipe of the battery energy storage system can also be applied to the control device of the liquid-cooled pipe of the battery energy storage system provided in the embodiment of the present disclosure, and will not be described in detail in the embodiment of the present disclosure.

[0152] FIG. 7 is a structural schematic diagram of the control device of the liquid-cooled pipe of the battery energy storage system provided in Example 5 of the present disclosure.

[0153] As shown in FIG. 7 , the control device 700 of the liquid-cooled line of the battery energy storage system may include a first monitoring module 701, a determination module 702, a first judgment module 703, and a processing module 704.

[0154] Here, the first monitoring module 701 monitors the battery energy storage system to obtain the operation mode of the battery energy storage system and the first temperature of the multiple individual batteries of any one battery cluster of the battery energy storage system.

[0155] The determining module 702 is for determining a thermal management scheme to be turned on by the battery energy storage system based on the first temperature and the operation mode of the multiple individual batteries of each battery cluster.

[0156] The first determination module 703 determines whether the battery energy storage system needs to perform flow control on.

[0157] The processing module 704 determines a target battery cluster based on a first temperature and a thermal management method of the multiple batteries in each battery cluster according to the battery energy storage system needing to perform flow control on, and opens the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster.

[0158] In one possible embodiment of the present disclosure, the determination module 702 obtains a first target characteristic of the battery energy storage system, including at least one of the first battery individual maximum temperature, the first battery individual minimum temperature, the first battery system average temperature, and the battery system minimum temperature difference, based on the first target characteristic and the operating mode, determines whether the battery energy storage system needs to turn on thermal management, and if it determines that the battery energy storage system needs to turn on thermal management, determines a thermal management scheme to be turned on by the battery energy storage system.

[0159] In one possible embodiment of the present disclosure, the judgment module 703 determines, for any one battery cluster, a first average temperature of the battery cluster based on a first temperature of the multiple individual batteries in the battery cluster, and determines whether the battery energy storage system needs to perform flow control on based on the first average temperature of each battery cluster.

[0160] In one possible embodiment of the present disclosure, the judgment module 702 determines whether a first battery cluster pair is present in the battery energy storage system, based on the first average temperature of each battery cluster, in which a first temperature difference indicating a difference between the first average temperatures of the first battery clusters is greater than or equal to a first set value, and determines that the battery energy storage system needs to perform flow control on in response to the first battery cluster pair being present in the battery energy storage system.

[0161] In one possible embodiment of the present disclosure, the thermal management scheme includes heating management, and the processing module 704 opens a flow control valve of a liquid-cooled pipe branch corresponding to a target battery cluster to determine a target battery cluster among the battery clusters that has the highest first average temperature based on the first average temperature of each battery cluster.

[0162] In one possible embodiment of the present disclosure, the thermal management scheme includes cooling management, and the processing module 704 determines a target battery cluster from each battery cluster that has the smallest first average temperature based on the first average temperature of each battery cluster, and opens a flow control valve of a liquid-cooled pipe branch corresponding to the target battery cluster.

[0163] In one possible embodiment of the present disclosure, the control device 700 for the liquid cooling lines of the battery energy storage system comprises: a second monitoring module that continues to monitor the battery energy storage system to obtain a second temperature of the plurality of individual batteries in any one of the battery clusters of the battery energy storage system; A second determination module that determines whether the battery energy storage system needs to perform a flow control off based on a second temperature of the plurality of individual batteries of each battery cluster; A first off module for closing a flow control valve of a liquid-cooled pipe branch corresponding to a target battery cluster according to the battery energy storage system needing to perform a flow control off; a third determination module for determining whether the battery energy storage system needs to turn off a thermal management scheme; The battery may further include a second off module for turning off the thermal management scheme in response to a need for the battery energy storage system to turn off the thermal management scheme.

[0164] In one possible embodiment of the present disclosure, the thermal management scheme includes heating management or cooling management, and the second judgment module determines, for any one of the battery clusters, a second average temperature of the battery cluster based on second temperatures of the multiple individual batteries in the battery cluster, and determines whether the battery energy storage system needs to perform turning off the flow control based on the second average temperature of each battery cluster.

[0165] In one possible embodiment of the present disclosure, the second judgment module obtains, for any two battery clusters, a second temperature difference indicating a difference between the second average temperatures of any two battery clusters based on a second average temperature of any two battery clusters, and determines that the battery energy storage system needs to perform turning off the flow control in response to each second temperature difference being less than or equal to a second set value.

[0166] In one possible embodiment of the present disclosure, the second judgment module obtains second target characteristics of the battery energy storage system based on second temperatures of the multiple battery units in each battery cluster, including at least one of the second battery unit maximum temperature, the second battery unit minimum temperature, the second battery system average temperature, and the battery system maximum temperature difference, and determines whether the battery energy storage system needs to turn off the thermal management method based on the second target characteristics, the thermal management method, and the operating mode.

[0167] In one possible embodiment of the present disclosure, the thermal management scheme includes self-cycling management.

[0168] The control device of the liquid-cooled pipe of the battery energy storage system of the embodiment of the present disclosure monitors the battery energy storage system to obtain the operation mode of the battery energy storage system and the first temperature of the multiple individual batteries of any one of the battery clusters of the battery energy storage system, determines the thermal management method to be turned on by the battery energy storage system based on the first temperature and the operation mode of the multiple individual batteries of each battery cluster, judges whether the battery energy storage system needs to execute the flow control on, and determines a target battery cluster based on the first temperature and the thermal management method of the multiple individual batteries of each battery cluster according to the need to execute the flow control on, and opens the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster. Thus, the target battery cluster requiring the flow control can be automatically identified based on the operation mode of the battery energy storage system and the first temperature of each individual battery, and the flow rate of the liquid-cooled pipe branch corresponding to the target battery cluster can be effectively controlled, and the temperature difference between the battery clusters can be effectively improved.

[0169] In order to realize the above embodiments, the present invention proposes an electronic device further including a memory, a processor, and a computer program stored in the memory and executable by the processor, which, when executing the program, realizes the control method for a liquid-cooled pipe of a battery energy storage system proposed in any one of the above embodiments of the present invention.

[0170] In order to realize the above-mentioned embodiments, the present invention further proposes a non-transitory computer-readable storage medium storing a computer program which, when executed by a processor, realizes the control method for a liquid-cooled pipe of a battery energy storage system proposed in any one of the above-mentioned embodiments of the present invention.

[0171] In order to realize the above embodiment, the present invention further proposes a computer program product which, when instructions therein are executed by a processor, executes the method for controlling a liquid-cooled pipe of a battery energy storage system proposed in any one of the above embodiments of the present invention.

[0172] According to an embodiment of the present invention, the present invention further provides an electronic device, a non-transitory computer-readable storage medium, and a computer program product.

[0173] As shown in Figure 8, electronic device 12 is depicted as a general-purpose computing device. Components of electronic device 12 may include, but are not limited to, one or more processors or processing units 16, a system memory 28, and a bus 18 connecting different system components (including system memory 28 and processing units 16).

[0174] Bus 18 represents one or more of several classes of bus structures, including a memory bus or memory controller, a peripheral bus, a graphical acceleration port, a processor, or a local bus using any of a number of bus structures, including, but not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MAC) bus, an Enhanced ISA bus, a Video Electronics Standards Association (VESA) local bus, and a Peripheral Component Interconnect (PCI) bus.

[0175] The electronic device 12 typically includes a number of computer system readable media, which may be any available media that can be accessed by the electronic device 12, including volatile media, nonvolatile media, removable media and non-removable media.

[0176] The memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 30 and / or cache memory 32. The electronic device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. As an example, the storage system 34 may be used to read from and write to non-removable, non-volatile magnetic media (not shown in FIG. 8, but commonly referred to as a "hard disk drive"). Although not shown in FIG. 8, a disk drive for reading from and writing to a removable nonvolatile disk (e.g., a "floppy disk"), and an optical disk drive for reading from and writing to a removable nonvolatile optical disk (e.g., an optical disk read only memory (CD-ROM), a digital video disk read only memory (DVD-ROM) or other optical media) may be provided. In these cases, each drive may be connected to the bus 18 via one or more data media interfaces. The memory 28 may include at least one program product having a set (e.g., at least one) of program modules arranged to perform the functions of each embodiment of the present invention.

[0177] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more applications, other program modules, and program data. Each of these examples, or some combination thereof, may include the implementation of a network environment. The program modules 42 typically perform the functions and / or methods in the embodiments described herein.

[0178] The electronic device 12 can communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), one or more devices that allow a user to interact with the electronic device 12, and / or any device (e.g., network card, modem, etc.) that allows the electronic device 12 to communicate with one or more other computing devices. This communication can occur through an input / output (I / O) interface 22. The electronic device 12 can also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network (e.g., the Internet) through a network adapter 20. As shown in the drawings, the network adapter 20 communicates with other modules of the electronic device 12 through a bus 18. Although not shown, it should be understood that other hardware and / or software modules can be used in combination with the electronic device 12, including, but not limited to, microcode, device drives, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0179] The processing unit 16 executes programs stored in the system memory 28 to perform various functional applications and data processing, such as the methods described in the above embodiments.

[0180] In the description of this specification, the reference terms "one embodiment", "several embodiments", "examples", "specific examples", or "several examples" mean that the specific features, structures, materials, or characteristics described based on the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic expressions of the above terms do not necessarily refer to the same embodiment or example. And, the specific features, structures, materials, or characteristics described can be combined in an appropriate manner in any one or more embodiments or examples. Furthermore, if not inconsistent, a person skilled in the art can combine different embodiments or examples described herein and features of different embodiments or examples.

[0181] Furthermore, the terms "first" and "second" are used for descriptive purposes only and cannot be understood to indicate or imply a relative importance or number of the technical features depicted. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one feature. In the present description, "plurality" means at least two, e.g., two, three, etc., unless otherwise specifically limited.

[0182] Any process or method description depicted in a flow chart or otherwise described herein can be understood to represent modules, fragments or portions of code of executable instructions that include steps for implementing one or more custom logic functions or processes, and the scope of the preferred embodiments of the present invention includes alternative implementations that involve performing functions essentially simultaneously according to such functions, or in reverse order, rather than in the order shown or described, as would be understood by one of ordinary skill in the art of embodiments of the present invention.

[0183] The logic and / or steps shown in the flow charts or otherwise described herein, e.g., can be considered as a sequential listing of executable instructions used to realize logical functions, and can be tangibly embodied in any computer-readable medium for use in or in combination with an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that retrieves and executes instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" may be any device that contains a program for storing, communicating, propagating, or transmitting an instruction execution system, apparatus, or device, or for use in combination with such an instruction execution system, apparatus, or device. More specific examples (non-limiting list) of computer-readable media include an electrical connection having one or more wires (electronic devices), a portable computer disk box (magnetic devices), a random access memory (RAM), a read-only memory (ROM), an erasable editable read-only memory (EPROM or flash memory), a fiber optic device, and a portable optical disk read-only memory (CD-ROM). Additionally, the computer-readable medium may be paper or other suitable medium on which the program can be printed. This is because, for example, paper or other medium can be optically scanned and then edited, translated, or processed in any other suitable manner as necessary to obtain the program electronically and store it in computer memory.

[0184] It should be understood that each part of the present invention can be realized by hardware, software, firmware, or a combination thereof. In the above embodiment, a number of steps or methods can be realized using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, when realized by hardware, as in another embodiment, it can be realized by any or a combination of techniques well known in the art, such as a discrete logic circuit having logic gate circuits for implementing a logic function on a data signal, a dedicated integrated circuit having appropriate combinational logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0185] Those skilled in the art can understand that all or part of the steps for realizing the methods of the above embodiments can be completed by instructing relevant hardware by a program that can be stored in a computer-readable storage medium, and when executed, includes one or a combination of the steps of the method embodiments.

[0186] Furthermore, each functional unit in each embodiment of the present invention may be integrated into one processing module, each unit may exist physically alone, or two or more units may be integrated into one module. The integrated module may be realized in the form of hardware or in the form of a software functional module. When the integrated module is realized as a software functional module and sold or used as an independent product, it may be stored in a computer-readable storage medium.

[0187] The storage medium may be a read-only memory, a magnetic disk, an optical disk, etc. Although the embodiments of the present invention have been shown and described above, the embodiments are merely illustrative and should not be construed as limitations on the present invention, and those skilled in the art can understand that the embodiments can be changed, modified, substituted, and modified within the scope of the present invention.

Claims

1. 1. A method for controlling a liquid-cooled line of a battery energy storage system, comprising: monitoring the battery energy storage system to obtain an operating mode of the battery energy storage system and a first temperature of a plurality of individual batteries of any one of the battery clusters of the battery energy storage system; Determine a thermal management scheme to be turned on by the battery energy storage system according to a first temperature of the plurality of individual batteries of each of the battery clusters and the operation mode, and determine whether the battery energy storage system needs to perform a flow control on; According to the need of the battery energy storage system to perform flow control on, determining a target battery cluster according to a first temperature of a plurality of individual batteries of each of the battery clusters and the thermal management method, and opening a flow control valve of a liquid-cooled pipe branch corresponding to the target battery cluster; Determining whether the battery energy storage system needs to perform flow control on includes: determining a first average temperature of the battery cluster based on first temperatures of a plurality of individual batteries of the battery cluster for any one of the battery clusters; determining whether the battery energy storage system needs to perform flow control on based on a first average temperature of each of the battery clusters; Determining whether the battery energy storage system needs to perform flow control on based on the first average temperature of each of the battery clusters includes: determining whether there are any pairs of first battery clusters in the battery energy storage system, the pair having a first temperature difference indicative of a difference between the first average temperatures of the first battery clusters being equal to or greater than a first set value, based on the first average temperatures of each of the battery clusters; determining that the battery energy storage system needs to perform flow control on in response to the first battery cluster pair being present in the battery energy storage system; the thermal management scheme includes heating management; determining a target battery cluster based on a first temperature of the plurality of individual batteries in each of the battery clusters and the thermal management method, and opening a flow control valve of a liquid-cooled pipe branch corresponding to the target battery cluster; determining a target battery cluster from each of the battery clusters that has the highest first average temperature based on the first average temperature of each of the battery clusters; and opening a flow control valve of a liquid-cooled line branch corresponding to the target battery cluster. A method for controlling a liquid-cooled pipe in a battery energy storage system.

2. A method for controlling a liquid-cooled pipe in a battery energy storage system, comprising: monitoring the battery energy storage system to obtain an operating mode of the battery energy storage system and a first temperature of a plurality of individual batteries of any one of the battery clusters of the battery energy storage system; Determine a thermal management scheme to be turned on by the battery energy storage system according to a first temperature of the plurality of individual batteries of each of the battery clusters and the operation mode, and determine whether the battery energy storage system needs to perform a flow control on; According to the need of the battery energy storage system to perform flow control on, determining a target battery cluster according to a first temperature of a plurality of individual batteries of each of the battery clusters and the thermal management method, and opening a flow control valve of a liquid-cooled pipe branch corresponding to the target battery cluster; Determining whether the battery energy storage system needs to perform flow control on includes: determining a first average temperature of the battery cluster based on first temperatures of a plurality of individual batteries of the battery cluster for any one of the battery clusters; determining whether the battery energy storage system needs to perform flow control on based on a first average temperature of each of the battery clusters; Determining whether the battery energy storage system needs to perform flow control on based on the first average temperature of each of the battery clusters includes: determining whether there are any pairs of first battery clusters in the battery energy storage system, the pair having a first temperature difference indicative of a difference between the first average temperatures of the first battery clusters being equal to or greater than a first set value, based on the first average temperatures of each of the battery clusters; determining that the battery energy storage system needs to perform flow control on in response to the first battery cluster pair being present in the battery energy storage system; the thermal management scheme includes cooling management; determining a target battery cluster based on a first temperature of the plurality of individual batteries in each of the battery clusters and the thermal management method, and opening a flow control valve of a liquid-cooled pipe branch corresponding to the target battery cluster; determining a target battery cluster from each of the battery clusters that has the smallest first average temperature based on the first average temperature of each of the battery clusters; and opening a flow control valve of a liquid-cooled line branch corresponding to the target battery cluster. A method for controlling a liquid-cooled pipe in a battery energy storage system.

3. A method for controlling a liquid-cooled pipe of a battery energy storage system, comprising: monitoring the battery energy storage system to obtain an operating mode of the battery energy storage system and a first temperature of a plurality of individual batteries of any one of the battery clusters of the battery energy storage system; Determine a thermal management scheme to be turned on by the battery energy storage system according to a first temperature of the plurality of individual batteries of each of the battery clusters and the operation mode, and determine whether the battery energy storage system needs to perform a flow control on; According to the need of the battery energy storage system to perform flow control on, determining a target battery cluster according to a first temperature of a plurality of individual batteries of each of the battery clusters and the thermal management method, and opening a flow control valve of a liquid-cooled pipe branch corresponding to the target battery cluster; Determining whether the battery energy storage system needs to perform flow control on includes: determining a first average temperature of the battery cluster based on first temperatures of a plurality of individual batteries of the battery cluster for any one of the battery clusters; determining whether the battery energy storage system needs to perform flow control on based on a first average temperature of each of the battery clusters; Determining whether the battery energy storage system needs to perform flow control on based on the first average temperature of each of the battery clusters includes: determining whether there are any pairs of first battery clusters in the battery energy storage system, the pair having a first temperature difference indicative of a difference between the first average temperatures of the first battery clusters being equal to or greater than a first set value, based on the first average temperatures of each of the battery clusters; determining that the battery energy storage system needs to perform flow control on in response to the first battery cluster pair being present in the battery energy storage system; the thermal management scheme includes heating management; determining a target battery cluster based on a first temperature of the plurality of individual batteries in each of the battery clusters and the thermal management method, and opening a flow control valve of a liquid-cooled pipe branch corresponding to the target battery cluster; determining a target battery cluster from each of the battery clusters that has the highest first average temperature based on the first average temperature of each of the battery clusters; opening a flow control valve of a liquid-cooled line branch corresponding to the target battery cluster; the thermal management scheme includes cooling management; determining a target battery cluster based on a first temperature of the plurality of individual batteries in each of the battery clusters and the thermal management method, and opening a flow control valve of a liquid-cooled pipe branch corresponding to the target battery cluster; determining a target battery cluster from each of the battery clusters that has the smallest first average temperature based on the first average temperature of each of the battery clusters; and opening a flow control valve of a liquid-cooled line branch corresponding to the target battery cluster. A method for controlling a liquid-cooled pipe in a battery energy storage system.

4. determining, based on a first temperature of a plurality of individual batteries of each of the battery clusters and the operation mode, a thermal management scheme to be turned on by the battery energy storage system; obtaining a first target characteristic of the battery energy storage system based on first temperatures of a plurality of individual batteries in each of the battery clusters, the first target characteristic including at least one of a first individual battery maximum temperature, a first individual battery minimum temperature, a first battery system average temperature, and a battery system minimum temperature difference; determining whether the battery energy storage system needs to turn on thermal management based on the first target characteristic and the operating mode; if the battery energy storage system determines that thermal management needs to be turned on, determining a thermal management scheme to be turned on by the battery energy storage system; The method according to any one of claims 1 to 3.

5. After opening the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster, continuously monitoring the battery energy storage system to obtain a second temperature of the plurality of individual batteries of any one of the battery clusters of the energy storage system; determining whether the battery energy storage system needs to perform a flow control off based on a second temperature of each of the plurality of individual batteries of the battery cluster; According to the need of the battery energy storage system to perform turning off the flow control, close the flow control valve of the liquid-cooled pipe branch corresponding to the target battery cluster, and determine whether the battery energy storage system needs to turn off the thermal management method; and in response to a need for the battery energy storage system to turn off the thermal management scheme, turning off the thermal management scheme. The method according to any one of claims 1 to 3.

6. the thermal management method includes heating management or cooling management; Determining whether the battery energy storage system needs to perform a flow control off based on the second temperature of the plurality of individual batteries of each of the battery clusters includes: determining, for any one of the battery clusters, a second average temperature of the battery cluster based on second temperatures of the plurality of individual batteries of the battery cluster; and determining whether the battery energy storage system needs to perform a flow control off based on a second average temperature of each of the battery clusters.

6. The method of claim 5 .

7. Determining whether the battery energy storage system needs to perform a flow control off based on the second average temperature of each of the battery clusters includes: obtaining, for any two of the battery clusters, a second temperature difference indicating a difference between the second average temperatures of the any two of the battery clusters based on a second average temperature of the any two of the battery clusters; determining that the battery energy storage system needs to perform a flow control off in response to each of the second temperature differences being equal to or less than a second set value; 7. The method of claim 6.

8. Determining whether the battery energy storage system needs to turn off the thermal management scheme comprises: Obtaining a second target characteristic of the battery energy storage system based on second temperatures of the plurality of individual batteries of each of the battery clusters, the second target characteristic including at least one of a second individual battery maximum temperature, a second individual battery minimum temperature, a second battery system average temperature, and a battery system maximum temperature difference; determining whether the battery energy storage system needs to turn off the thermal management scheme based on the second target characteristic, the thermal management scheme, and the operating mode.

6. The method of claim 5 .

9. The thermal management method includes self-cycling management; The method according to any one of claims 1 to 3.

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