Energy storage management device, energy storage system, and energy storage management method

Abstract

The embodiment of the invention provides an energy storage management device, an energy storage system and an energy storage management method. The device comprises an application server and at least one coordination controller, the coordination controller is used for acquiring first state data of the plurality of battery clusters in the corresponding energy storage converter circuit and data of the converter, and generating first start-stop control signals of the plurality of battery clusters in the corresponding energy storage converter circuit according to the acquired first state data and the data of the converter; and the application server is used for acquiring second state data of the plurality of battery clusters, acquiring the first state data acquired by the coordination controller, and determining whether to send the first start-stop control signal to the corresponding energy storage converter circuit based on a comparison result of the first state data and the second state data. By adding the application server, the cooperative control of the application server and the coordination controller is realized, the energy storage system is prevented from being controlled when the state data acquired by the coordination controller is abnormal, and the start-stop control accuracy of the energy storage system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage systems, and in particular to an energy storage management device, an energy storage system, and an energy storage management method. Background Art

[0002] Energy storage systems are used to store electrical energy and release it when needed. As energy storage systems develop, their capacities are increasing, meaning they can store and / or release more and more electrical energy. This increased capacity requires more sophisticated control and management of energy storage systems to ensure their safe and efficient operation.

[0003] Currently, energy storage systems typically include a controller that uses data collected from the battery cluster's status to control the start and stop of the battery cluster, ensuring efficient energy utilization. However, harsh environments, abnormal communication links, and hardware failures in the controller can all lead to anomalies in the status data collected by the controller, resulting in incorrect control strategies and impacting the operation and performance of the energy storage system. Summary of the Invention

[0004] The embodiments of the present application provide an energy storage management device, an energy storage system, and an energy storage management method. By using an application server to collaboratively control the energy storage system with a coordination controller, the energy storage system is avoided from being controlled based on abnormal status data, the accuracy of the energy storage system control is improved, and the safety of the energy storage system is thereby improved.

[0005] In a first aspect, an embodiment of the present application provides an energy storage management device, which is applied to an energy storage system, wherein the energy storage system is further provided with at least one energy storage conversion circuit, each energy storage conversion circuit including a converter and multiple battery clusters; the energy storage management device includes an application server and at least one coordination controller; the coordination controller is used to obtain first status data of multiple battery clusters and converter data in the corresponding energy storage conversion circuit, and generate first start-stop control signals for multiple battery clusters in the corresponding energy storage conversion circuit based on the obtained first status data and converter data; the application server is used to obtain second status data of multiple battery clusters, and obtain first status data obtained by at least one coordination controller, and determine whether to send the first start-stop control signal to the corresponding energy storage conversion circuit based on a comparison result of the first status data and the second status data.

[0006] In one possible embodiment, the application server is specifically used to: if the absolute value of the difference between the first state data and the second state data is greater than a first threshold, determine the second start-stop control signal of the corresponding energy storage converter circuit based on the converter data, and the first state data and / or the second state data; and send the second start-stop control signal to the corresponding energy storage converter circuit.

[0007] In one possible implementation, the application server is specifically used to: generate a second start-stop control signal based on the first state data and the second state data if the absolute value of the difference between the first state data and the second state data is greater than the first threshold and less than or equal to the second threshold; generate a stop operation signal if the absolute value of the difference between the first state data and the second state data is greater than the second threshold, and send the stop operation signal to the energy storage conversion circuit corresponding to the first state data.

[0008] In a possible implementation, the application server is further configured to: if the absolute value of the difference between the first state data and the second state data is less than or equal to a first threshold, send a first start / stop control signal to the energy storage conversion circuit corresponding to the first state data.

[0009] In a possible implementation, the application server is further configured to control the start and stop of at least one energy storage and power conversion circuit, so as to control the start and stop of multiple battery clusters in the corresponding energy storage and power conversion circuit through the coordination controller.

[0010] In one possible embodiment, the coordination controller is specifically used to: if the change between the first state data obtained at a historical time and the first state data currently obtained is less than a third threshold, then generate the first start-stop control signals of multiple battery clusters in the corresponding energy storage conversion circuit based on the currently obtained first state data and the data of the converter.

[0011] In one possible embodiment, the coordination controller is also used to: generate a takeover request if the change between the first state data obtained at a historical time and the first state data currently obtained is greater than or equal to a third threshold; the application server is also used to: shut down the coordination controller in response to the takeover request, and generate start and stop control signals for the multiple battery clusters in the energy storage conversion circuit corresponding to the first state data based on the second state data of the multiple battery clusters in the energy storage conversion circuit corresponding to the obtained first state data and the data of the converter.

[0012] In a possible implementation, the first state data and the second state data of the battery cluster include the voltage, current, and temperature of the battery cluster.

[0013] In a second aspect, an embodiment of the present application provides an energy storage system, comprising at least one energy storage conversion circuit, a communication device, and the energy storage management device provided in the first aspect above; each energy storage conversion circuit comprises a converter and multiple battery clusters; the energy storage conversion circuit is connected to the energy storage management device via the communication device; the energy storage management device is used to control the operation of at least one energy storage conversion circuit.

[0014] In a third aspect, an embodiment of the present application provides an energy storage management method, which is applied to the energy storage system provided in the second aspect above, the method comprising: obtaining first status data of multiple battery clusters and converter data in a corresponding energy storage conversion circuit, and generating first start-stop control signals for multiple battery clusters in the corresponding energy storage conversion circuit based on the obtained first status data and converter data; obtaining second status data of multiple battery clusters, and obtaining first status data obtained by at least one coordination controller, and determining whether to send the first start-stop control signal to the corresponding energy storage conversion circuit based on a comparison result of the first status data and the second status data.

[0015] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the method provided in the third aspect above.

[0016] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which implements the method provided in the third aspect above when executed by a processor.

[0017] The energy storage management device, energy storage system and energy storage management method provided in the embodiments of the present application, wherein the energy storage management device provided realizes the collaborative control of the energy storage system by using the coordination controller and the application server. Specifically, the application server and the coordination controller respectively obtain the status data of the battery cluster in the energy storage system, and realize the abnormal detection of the data obtained by the coordination controller through the comparison results of the two sets of status data obtained. When there is no abnormality, the coordination controller is allowed to perform the start and stop control of the energy storage converter circuit. Otherwise, the start and stop control signal output by the coordination controller is prohibited from being sent to the energy storage converter circuit. The status data obtained by the application server verifies whether the status data obtained by the coordination controller is accurate, avoids the problem of erroneous start and stop control signals sent to the energy storage converter system when the status data obtained by the coordination controller is abnormal, and improves the accuracy of the start and stop control of the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] Figure 1 A schematic diagram of an application scenario provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of an energy storage system provided in an embodiment of the present application;

[0021] Figure 3 A schematic structural diagram of an energy storage and current conversion circuit provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the structure of an energy storage management device provided in an embodiment of the present application;

[0023] Figure 5a A schematic diagram of the operation process of the energy storage management device 210 when the absolute value of the difference between the first state data and the second state data provided in an embodiment of the present application is greater than a first threshold;

[0024] Figure 5b A schematic diagram of the operation process of the energy storage management device 210 when the absolute value of the difference between the first state data and the second state data provided in an embodiment of the present application is less than or equal to the first threshold;

[0025] Figure 6 A schematic diagram of the structure of an energy storage system provided in an embodiment of the present application;

[0026] Figure 7 A flowchart of an energy storage management method provided in an embodiment of the present application.

[0027] Reference numerals:

[0028] 200-Energy storage system;

[0029] 210-Energy storage management device; 211-Application server; 212-Coordination controller;

[0030] 220-Energy storage conversion circuit; 221-Converter; 222-Battery cluster.

[0031] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0032] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0033] An energy storage system is a system that can store electrical energy and release it when needed. To ensure the safe operation of an energy storage system, an energy storage management device (also known as an energy management system) is required to accurately monitor and control the energy storage system.

[0034] Figure 1This is a schematic diagram of an application scenario provided by an embodiment of the present application. Figure 1 As shown, the energy storage management device can interact with various components in the energy storage system, such as battery clusters and converters, to obtain the operating status of each component and control the energy storage system according to the operating status.

[0035] For example, for an energy storage system that releases electric energy, when the energy storage system receives the power demand of an electric device, the energy storage management device obtains the converter corresponding to the power demand, and according to the monitored current operating conditions of the battery cluster, such as capacity, health status, etc., multiple battery clusters that meet the capacity required by the converter are connected to the converter, so that each battery cluster starts working and inputs electric energy into the converter. The converter receives the electric energy and converts the electric energy into another form to supply power to the electric device, such as converting direct current into alternating current.

[0036] In addition to controlling the start of operation of each battery cluster, the energy storage management device can also avoid potential dangers such as overcharging, over-discharging, overheating and short circuit in the energy storage system based on the monitored operating conditions of the current battery cluster.

[0037] For the above scenarios, the energy storage management device can ensure that the energy storage system can effectively respond to electricity demand and provide reliable power output while ensuring the safety of the energy storage system.

[0038] However, current energy storage management devices typically control the energy storage system through a single controller. This controller, typically a card, primarily controls the energy storage system through hardware. When a controller malfunctions (e.g., due to environmental interference or component aging or damage), the energy storage management device struggles to identify the fault and may generate erroneous control instructions, leading to improper power distribution and damage to the energy storage system. In severe cases, this can lead to other safety hazards, such as fire. This is particularly true for gigawatt-hour (GWh) energy storage systems, as erroneous control instructions can pose a significant safety risk due to their high capacity.

[0039] The energy storage management device provided in the embodiments of the present application can be applied to various energy storage systems, such as household energy storage systems, industrial and commercial energy storage systems, grid-level energy storage systems, and other scenarios. The energy storage management device monitors and controls the operation of the energy storage system.

[0040] The energy storage management device provided in this application realizes the coordinated control of the energy storage system by the application server and the coordination controller by setting up an application server. Specifically, the application server and the coordination controller respectively obtain the status data of each battery cluster in the energy storage system. Based on the comparison results of the status data respectively obtained, and on the premise that it is determined that the status data obtained by the coordination controller is normal, the control signal generated by the coordination controller is sent to the energy storage system. The status data obtained by the application server verifies whether the status data obtained by the coordination controller is accurate, improves the accuracy of the control instructions issued by the coordination controller, and thus improves the safety of the operation of the energy storage system.

[0041] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0042] Figure 2 This is a schematic diagram of the structure of an energy storage system provided in an embodiment of the present application. Figure 2 As shown, the energy storage system 200 is provided with at least one energy storage and current conversion circuit 220 , and each energy storage and current conversion circuit 220 includes a converter 221 and a plurality of battery clusters 222 .

[0043] The energy storage converter circuit 220 consists of a converter 221 and a battery cluster 222. When the energy storage system 200 is discharging, the converter 221 converts the DC power from the battery cluster 222 into AC power for output. When the energy storage system 200 is charging, the converter 221 converts external AC power into DC power for input into the battery cluster 222.

[0044] Converter 221 is an electronic device that converts electrical energy from one form to another, such as direct current to alternating current or alternating current to direct current. Battery cell 222 is a combination of battery cells arranged and connected in a specific manner to provide higher voltage, capacity, or power.

[0045] Figure 2 Two energy storage and conversion circuits 220 are used as an example. Each energy storage and conversion circuit 220 can be connected to an electrical device or charging device. For example, the output end of the converter 221 in each energy storage and conversion circuit 220 can be connected to the electrical device or charging device to complete the connection between the energy storage and conversion circuit 220 and the electrical device or charging device.

[0046] Continue to refer to Figure 2The input end of the converter 221 is connected to multiple battery clusters 222, which provide power to the power-consuming devices through the converter 221 to meet the power needs of the power-consuming devices. The output end of the converter 221 is connected to the power-consuming devices or charging devices. For example, assuming that the number of battery clusters 222 in the current energy storage converter circuit 220 is n, and the capacity of each battery cluster 222 is e, then the energy storage converter circuit 220 can provide a maximum of n power to the connected power-consuming devices. e's electrical energy.

[0047] In actual operation, the number and connection method of battery clusters 222 required to be connected to the converter 221 are not fixed. Depending on power demand, the energy storage converter circuit 220 can connect different numbers of battery clusters using different methods. For example, the series connection of battery clusters 222 is determined based on the voltage required by the device, while the parallel connection of battery clusters 222 is determined based on the capacity required by the device. For example, if the device requires a capacity of E from the converter 221, and the capacity of the battery clusters 222 connected to the converter is all equal to e, the energy storage converter circuit 220 can connect E / e battery clusters 222 in parallel to meet the device's power demand.

[0048] For example, Figure 3 This is a schematic diagram of the structure of an energy storage converter circuit provided in an embodiment of the present application. Figure 3 As shown, in the actual operation process, the energy storage converter circuit 220 is provided with a plurality of switches, each of which can connect the connected battery cluster 222 to the energy storage converter circuit 220, or disconnect it in the energy storage converter circuit 220. Figure 3 For ease of operation, a multi-level switch may be provided so that a higher-level switch can directly adjust the series or parallel connection of multiple battery clusters 222 to meet different voltage or capacity requirements.

[0049] Figure 4 This is a schematic diagram of the structure of an energy storage management device provided in an embodiment of the present application. Figure 4 As shown, the energy storage management device 210 provided in this embodiment can be applied to Figure 4 In the energy storage system 200 shown, the energy storage management device 210 includes an application server 211 and at least one coordination controller 212 .

[0050] The coordination controller 212 is used to obtain the first state data of multiple battery clusters 222 and the data of the converter 221 in the corresponding energy storage conversion circuit 220, and generate the first start-stop control signals of the multiple battery clusters 222 in the corresponding energy storage conversion circuit 220 based on the obtained first state data and the data of the converter 221; the application server 211 is used to obtain the second state data of the multiple battery clusters 222, and obtain the first state data obtained by at least one coordination controller 212, and based on the comparison result of the first state data and the second state data, determine whether to send the first start-stop control signal to the corresponding energy storage conversion circuit 220.

[0051] The status data of the battery clusters 222 refers to parameters of the current operating status of each battery cluster 222, including one or more of voltage, current, and capacity. The first status data refers to the status data of the battery clusters 222 acquired by the coordination controller 212, and the second status data refers to the status data of the battery clusters 222 acquired by the application server 211.

[0052] Converter 221 data refers to parameters used to describe and monitor the performance and status of converter 221. To ensure efficient and reliable operation of converter 221 and to match the power requirements of electrical devices, converter 221 typically has parameter ranges set, including but not limited to input voltage range, input current range, and output frequency.

[0053] The start / stop control signals corresponding to the multiple battery clusters 222 in the energy storage and conversion circuit 220 are used to control the start / stop of the multiple battery clusters 222 in the energy storage and conversion circuit 220. The start / stop control signals include the control signals for each battery cluster 222, and the corresponding battery cluster 222 is controlled to start or stop based on the control signals of each battery cluster 222. Starting the corresponding battery cluster 222 connects the energy storage and conversion circuit 220, while stopping the corresponding battery cluster 222 disconnects the battery cluster 222 or the branch corresponding to the battery cluster 222. The first start / stop control signal is the start / stop control signal for the energy storage and conversion circuit 220 corresponding to the first status data generated by the coordination controller 212.

[0054] The coordination controller 212 and the application server 211 are electronic devices used to monitor and control the operation of the energy storage system 200, and can be in the form of a host computer or a microcontroller board. Specifically, the coordination controller 212 and the application server 211 can be a terminal device where the host computer is located or a terminal device composed of a microcontroller board. The microcontroller board format has a faster response speed, can receive instructions more quickly, and quickly transmit them to the energy storage converter circuit 220; and the host computer format has greater processing power and more storage resources than the microcontroller board format, can run complex software applications and algorithms, and its operation is more stable and reliable. At the same time, the host computer format is lower in cost than the microcontroller board format.

[0055] Continue to refer to Figure 4 , Figure 4 In the example, multiple coordination controllers 212 are used. The coordination controllers 212 can be connected to the energy storage and conversion circuits 220, respectively, so that at least one coordination controller 212 obtains first status data of multiple battery clusters 222 and data of the converter 221 in the corresponding energy storage and conversion circuit 220, and controls the corresponding energy storage and conversion circuit 220 via a first start / stop control signal. The application server 211 can be connected to each energy storage and conversion circuit 220 to obtain second status data of multiple battery clusters 222 in each energy storage and conversion circuit 220. The application server 211 is also connected to the coordination controller 212 to obtain the first status data obtained by the coordination controller 212 and to control the coordination controller 212.

[0056] In this embodiment, the connection between the application server 211 and the coordination controller 212 and the energy storage conversion circuit 220 is a communication connection, such as Figure 4 As shown by the arrow in the middle, it can be wired or wireless. The application server 211 and the coordination controller 212 are located in the same space and are preferably set to be wired connected, such as Figure 4 Indicated by the center line segment.

[0057] For example, in this embodiment, the coordination controller 212 is primarily used to control the energy storage system 200, while the application server 211 focuses on monitoring and coordinating the energy storage system 200. Given the primary functions of the coordination controller 212 and the application server 211, the coordination controller 212 requires a faster response speed to quickly transmit start / stop control signals to the corresponding energy storage converter circuit 220. Therefore, the coordination controller 212 is preferably a microcontroller board. The application server 211, on the other hand, requires more accurate and reliable operation, and therefore, is preferably a host computer.

[0058] In addition to the application server 211 and the coordination controller 212, the energy storage management device 210 also includes a data storage module. This data storage module is used to store data generated during the operation of the energy storage system 200 and the energy storage management device 210, such as first state data, second state data, and data from the converter 221. The data storage module can be dynamic random access memory (DRAM) or static random access memory (SRAM).

[0059] In one example, the energy storage management device 210 also includes an isolation device and a firewall. The isolation device is used to restrict access to specific devices to authorized devices. For example, only certain devices (such as the application server 211) are allowed to access the data storage module. The firewall is used to ensure network security during the interaction between the energy storage management device 210 and the energy storage system 200.

[0060] The coordination controller 212 may obtain the first status data of the multiple battery clusters 222 in the corresponding energy storage conversion circuit 220 in a manner such that each battery cluster 222 in the energy storage system 200 may correspond to multiple sensors, and the data of the corresponding battery cluster 222 detected by each sensor is the status data of the battery cluster 222. The coordination controller 212 is in communication with each sensor, receives the data detected by each sensor, and generates the first status data.

[0061] Specifically, the sensors include, but are not limited to, voltage transformers (VTs) and current transformers (CTs). The coordination controller 212 acquires status data detected by each sensor via a communication protocol such as MODBUS (Modicon Bus) or MMS (Manufacturing Message Specification), and converts the status data into data recognizable by the coordination controller 212, namely, first status data. For example, if the status data detected by each sensor is an analog signal, the coordination controller 212 may convert the analog signal into a digital signal, i.e., perform analog-to-digital conversion, to facilitate subsequent data processing and storage.

[0062] In one example, a battery management system (BMS) can be provided for each battery cluster 222 in energy storage system 200. The BMS can monitor the status data of the corresponding battery cluster 222, such as voltage, current, temperature, and capacity. The BMS also includes communication interfaces, such as a CAN (Controller Area Network) bus, a UART (Universal Asynchronous Receiver / Transmitter), and an I2C (Inter-Integrated Circuit). The coordination controller 212 can connect to the communication interface of the BMS corresponding to each battery cluster 222 to obtain the status data of the battery cluster 222, i.e., first status data, through the BMS.

[0063] The data of the converter 221 can be fixed, that is, data that can be determined based on the specific model of the converter 221, such as the rated input voltage, rated input power, rated output current, and rated output power calibrated for electronic equipment. This data can be pre-stored in the coordination controller 212 or in a data storage module. The coordination controller 212 reads this data to obtain the data of the converter 221.

[0064] The data for converter 221 can also be determined based on the electrical equipment and its power demand. For example, the data range required to be output by converter 221 can be determined based on the internal resistance and power demand of the electrical equipment, thereby further determining the data range required to be input by converter 221. To address this issue, the data storage module can pre-store a correspondence between the input and output data of converter 221. When the energy storage management device 210 receives the power demand of the electrical equipment, the coordination controller 212 determines the output data based on the electrical equipment and power demand, and determines the input data of converter 221 based on the correspondence. The input and output data constitute the data for converter 221.

[0065] The data from the converter 221 also includes data actually received and output by the converter 221, such as actual input voltage and actual output frequency. This data can be used to verify whether the converter 221 is operating normally. In one example, the converter 221 may be equipped with a monitoring system to monitor its operating status. The coordination controller 212 can communicate with the monitoring system to obtain data from the converter 221. In another example, the converter 221 may be equipped with multiple sensors, such as a frequency meter and a voltage transformer. The coordination controller 212 can communicate with each sensor to obtain data from the converter 221.

[0066] After obtaining the first state data and the data of the converter 221, the power required by the converter 221 can be determined based on the data of the converter 221. Based on the first state data, a battery cluster 222 that meets the required power input is identified. Based on the battery cluster 222 that meets the required power input, a first start / stop control signal is generated to activate the corresponding battery cluster and deactivate the remaining battery clusters.

[0067] In one example, if the data for converter 221 includes an input voltage range and an input capacity range, and the first state data includes voltage and capacity, then the battery clusters 222 to be connected in series can be determined based on the input voltage range and the voltages in each piece of first state data, so that the output voltage of the series battery clusters 222 falls within the input voltage range; and the battery clusters 222 to be connected in parallel can be determined based on the input capacity and the capacities in each piece of first state data, so that the capacity of the parallel battery clusters 222 falls within the input capacity range. Coordination controller 212 generates a first start / stop control signal to activate the battery clusters 222 to be connected in series and the battery clusters 222 to be connected in parallel, and deactivate the remaining battery clusters 222.

[0068] In another example, during the operation of the energy storage converter circuit 220, the output frequency of the converter 221 can be monitored in real time. If the output frequency deviates from the rated value, it means that the electric energy output by the energy storage converter circuit 220 and the electrical equipment are unbalanced, and the coordination controller 212 can control the output power of the converter 221 by sending a first start-stop control signal to the energy storage converter circuit 220. Specifically, the output power of the converter 221 can be controlled by controlling the start or stop of each battery cluster 222. For example, when the output frequency decreases, the output power of the converter 221 can be increased by turning on more battery clusters 222; when the output frequency increases, the output power of the converter 221 can be reduced by stopping some battery clusters 222.

[0069] For example, continue to refer to Figure 3 The start and stop control of battery cluster 222 can be achieved by controlling the switch. The first start and stop control signal sent by coordination controller 212 can control the closing or closing of the switch connected to the corresponding battery cluster 222, thereby turning on the corresponding battery cluster 222 and stopping the remaining battery clusters 222. The other end of converter 221 is connected to the power consumption device, so that the battery cluster connected to converter 221 can supply power to the power consumption device.

[0070] The way in which the application server 211 obtains the second state data of the multiple battery clusters 222 is the same as the way in which the coordination controller 212 obtains the first state data, and will not be elaborated here. It should be noted that although the application server 211 and the coordination controller 212 obtain the second state data and the first state data in the same way, since the application server 211 and the coordination controller 212 belong to different electronic devices, the state data obtained may be different. For example, depending on the accuracy of the application server 211 and the coordination controller 212, there may be errors in the second state data and the first state data obtained. Alternatively, if there is a fault in the coordination controller 212 or the application server 211, for example, a component or device of the coordination controller 212 is aged and damaged, there will be a large difference between the first state data and the second state data finally obtained.

[0071] The application server 211 is in communication with the coordination controller 212 and can directly read the first status data acquired by the coordination controller 212 .

[0072] In one example, after acquiring the first state data, the coordination controller 212 may store the first state data in a data storage module, and the application server 211 may read the first state data acquired by the coordination controller 212 from the data storage module.

[0073] After acquiring the second state data and the first state data, the coordination controller 212 can determine whether there is an abnormality in the first state data acquired based on a comparison result of the first state data and the second state data. If there is no abnormality, the first start / stop control signal is sent to the corresponding energy storage converter circuit 220. If there is an abnormality, the first start / stop control signal is not sent to the corresponding energy storage converter circuit 220.

[0074] Specifically, if the first state data and the second state data are approximately equal, then the first state data obtained by the coordination controller 212 is normal. Therefore, the absolute value of the difference between the first state data and the second state data can be calculated. If the absolute value of the difference is less than or equal to a threshold, the first start / stop control signal is sent to the corresponding energy storage converter circuit 220. The threshold is a pre-set difference value and is a configurable parameter.

[0075] For example, if the first status data and the second status data include the capacity of the battery cluster 222, the absolute value of the difference between the capacity of each battery cluster 222 obtained by the coordination controller 212 and the capacity of each battery cluster 222 obtained by the application server 211 is calculated. If the absolute value of the difference is less than or equal to the capacity threshold, the first start-stop control signal is sent to the corresponding energy storage conversion circuit 220.

[0076] For example, if the first status data and the second status data include the voltage and current of the battery cluster 222, the absolute value of the difference between the voltage and current of each battery cluster 222 obtained by the coordination controller 212 and the voltage and current of each battery cluster 222 obtained by the application server 211 is calculated. If the absolute value of the voltage difference is less than or equal to the voltage threshold, and the absolute value of the current difference is less than or equal to the current threshold, a first start-stop control signal is sent to the corresponding energy storage conversion circuit 220.

[0077] In one example, if the absolute value of the difference is greater than a threshold, indicating that at least one state data is abnormal, the first start / stop control signal is not sent to the corresponding energy storage converter circuit 220. For the safety of the energy storage system 200, the operation of the energy storage converter circuit 220 may be suspended, and an alarm may be issued. For example, an audible or visual alarm may be issued, or an alarm message may be sent to a staff member's terminal device to prompt the staff member to check the corresponding energy storage converter circuit 220.

[0078] In another example, directly pausing the energy storage conversion circuit 220 will cause the power supply to the connected electrical equipment to be interrupted. To address this issue, it is possible to further determine whether correct status data exists in the first status data and the second status data. If so, a new start-stop control signal is generated based on the correct status data and sent to the corresponding energy storage conversion circuit 220.

[0079] For example, the coordination controller 212 and the application server 211 can be tested for normal status, such as line and current. If one device is abnormal and the other is normal, a new start / stop control signal is generated based on the status data obtained from the normal device. Alternatively, the first and second status data can be obtained again to determine whether the absolute value of the difference between the new first and second status data is still greater than a threshold. If the absolute value of the new difference is less than the threshold, a new start / stop control signal is generated based on the new first status data and the data from the converter 221 and sent to the corresponding energy storage converter circuit 220.

[0080] The energy storage management device 210 provided in the embodiment of the present application implements the coordinated control of the energy storage system 200 using the coordination controller 212 and the application server 211. Specifically, the application server 211 and the coordination controller 212 respectively obtain status data of the battery cluster 222 in the energy storage system 200. By comparing the two sets of status data obtained, the coordination controller 212 detects anomalies in the data obtained. When there are no anomalies, the coordination controller 212 is allowed to perform start and stop control of the energy storage converter circuit 220. Otherwise, the start and stop control signals output by the coordination controller 212 are prohibited from being sent to the energy storage converter circuit 220. The status data obtained by the application server 211 verifies the accuracy of the status data obtained by the coordination controller 212, avoids the problem of incorrect start and stop control signals being issued to the energy storage converter circuit 220 when the status data obtained by the coordination controller 212 is abnormal, and improves the accuracy of the start and stop control of the energy storage system 200.

[0081] Optionally, the first state data and the second state data of the battery cluster 222 include the voltage, current, and temperature of the battery cluster 222 .

[0082] As can be seen from the above embodiment, the battery clusters 222 connected in series or parallel in the energy storage and current conversion circuit 220 must match the data of the converter 221. For example, the output voltage of the battery clusters 222 connected in series or parallel must meet the input voltage range of the converter 221, the output current must meet the input current range of the converter 221, and the capacity of the battery clusters 222 connected in series or parallel must meet the capacity range of the converter 221.

[0083] The first and second state data include the voltages and currents of battery clusters 222, allowing for quick determination of how to combine battery clusters 222 to meet the requirements of converter 221. While the capacity of battery clusters 222 is difficult to measure directly using sensors, it can be estimated using the voltages of battery clusters 222. The voltages of battery clusters 222 included in the first state data allow for an estimate of the capacity of each battery cluster 222, allowing the selection of battery clusters 222 to be activated based on the required capacity to meet power demand.

[0084] At the same time, by detecting the voltage, current, and temperature included in the first state data and the second state data, overvoltage, undervoltage, overcurrent, and overtemperature protection can also be achieved to prevent the energy storage system 200 from the aforementioned failure risk.

[0085] By detecting the voltage and current of the battery cluster 222, the energy storage system 200 can quickly respond to power demand and optimize power resource allocation. At the same time, by detecting the voltage, current and temperature of the battery cluster 222, the failure risk of each battery cluster 222 can be identified, thereby improving the safety of the energy storage system 200.

[0086] In a possible implementation, based on the above embodiment, the function of the application server 211 may be further refined according to the comparison results of different first status data and second status data.

[0087] Optionally, the application server 211 is specifically used to: if the absolute value of the difference between the first state data and the second state data is greater than a first threshold, then based on the data of the converter 221, as well as the first state data and / or the second state data, determine the second start-stop control signal of the corresponding energy storage converter circuit 220; and send the second start-stop control signal to the corresponding energy storage converter circuit 220.

[0088] The first threshold is a preset parameter and is a configurable parameter.

[0089] Figure 5a Schematic diagram of the operation process of the energy storage management device 210 when the absolute value of the difference between the first state data and the second state data provided in the embodiment of the present application is greater than the first threshold. Figure 5aAs shown, taking an energy storage converter circuit 220 as an example, if the absolute value of the difference between the first state data and the second state data is greater than a first threshold, indicating that there is a significant difference between the state data obtained by the coordination controller 212 and the application server 211, the first start / stop control signal is not sent to the corresponding energy storage converter circuit 220. At the same time, based on the operating status of the coordination controller 212 and the application server 211, the state data obtained by the device in normal operating state can be determined from the first state data and the second state data, and the application server 211 generates a second start / stop control signal. The second start / stop control signal is then sent to the corresponding energy storage converter circuit 220 via the application server 211.

[0090] The method of generating the second start-stop control signal is the same as the method of generating the first start-stop control signal by the coordination controller 212 provided in the aforementioned embodiment, except that the state data is replaced, which will not be described in detail here.

[0091] For example, if the absolute value of the difference between the first state data and the second state data is greater than a first threshold, and the operating state of coordination controller 212 is abnormal, for example, an abnormal line connection is detected, or the current of coordination controller 212 changes significantly, a second start / stop control signal is generated based on the second state data obtained by application server 211, which is operating normally. Application server 211 sends the second start / stop control signal to energy storage converter circuit 220 corresponding to the first state data.

[0092] For example, if the absolute value of the difference between the first state data and the second state data is greater than a first threshold, and both coordination controller 212 and application server 211 are operating normally, a second start / stop control signal may be generated based on the statistical values of the first state data and the second state data within a preset time period. Application server 211 transmits the second start / stop control signal to energy storage converter circuit 220 corresponding to the first state data.

[0093] The preset time period may refer to the first state data and the second state data acquired within a preset time before or after the moment when the power demand is received. The statistical value may be an average value, a mode, a median, or the like.

[0094] In one example, the application server 211 is specifically used to: if the absolute value of the difference between the first state data and the second state data is greater than the first threshold and less than or equal to the second threshold, then generate a second start-stop control signal based on the first state data and the second state data; if the absolute value of the difference between the first state data and the second state data is greater than the second threshold, then generate a stop operation signal, and send the stop operation signal to the energy storage conversion circuit 220 corresponding to the first state data.

[0095] Specifically, to improve the response speed of the energy storage management device 210, a second start / stop control signal can be generated based on a statistical value, such as an average, of the first and second state data when the absolute value of the difference between the first and second state data is greater than a first threshold and less than or equal to a second threshold. The second threshold is a pre-set, configurable parameter that balances control accuracy and response speed.

[0096] If the absolute value of the difference between the first state data and the second state data is greater than the second threshold, it indicates that there is a high probability of an abnormality in the coordination controller 212 or the application server 211, and a stop operation signal is generated to stop the energy storage conversion circuit 220 that receives the stop operation signal.

[0097] In one example, after the corresponding energy storage conversion circuit 220 is stopped, an alarm message may be sent to a staff member to prompt the staff member to inspect the energy storage conversion circuit 220 and the corresponding energy storage management device 210 .

[0098] By further dividing the interval greater than the first threshold into two intervals: greater than the first threshold and less than or equal to the second threshold, and greater than the second threshold, different measures can be formulated according to different intervals to more effectively control the energy storage system 200. While ensuring the accuracy of the generated start-stop control signal, response speed is also taken into account.

[0099] Optionally, the application server 211 is further configured to: if the absolute value of the difference between the first state data and the second state data is less than or equal to a first threshold, send a first start / stop control signal to the energy storage conversion circuit 220 corresponding to the first state data.

[0100] Figure 5b This is a schematic diagram of the operation process of the energy storage management device 210 when the absolute value of the difference between the first state data and the second state data provided in the embodiment of the present application is less than or equal to the first threshold. If the absolute value of the difference between the first state data and the second state data is less than or equal to the first threshold, it means that the first state data and the second state data are relatively accurate, and the difference is only caused by factors such as equipment differences, environmental factors, electromagnetic interference, etc., and can be ignored. Figure 5b As shown, the first start-stop control signal generated by the coordination controller 212 can be directly sent to the corresponding energy storage conversion circuit 220.

[0101] In this embodiment, the accuracy of the status data is determined by the absolute value of the difference between the first status data and the second status data. The determination method is simple, and abnormal changes or errors can be quickly identified, thereby improving the response speed of the energy storage management device 210.

[0102] In a possible implementation, the application server 211 is further configured to control the start and stop of at least one energy storage and conversion circuit 220 , thereby controlling the start and stop of multiple battery clusters 222 in the corresponding energy storage and conversion circuit 220 through the coordination controller 212 .

[0103] In this embodiment, the application server 211 can implement a one-button start / stop control function for the energy storage and conversion circuit 220 .

[0104] Specifically, the application server 211 can set a flag or button for each energy storage converter circuit 220 to control the start or stop of the corresponding energy storage converter circuit 220. If the flag or button is set to start the energy storage converter circuit 220, the coordination controller 212 can control the start and stop of the multiple battery clusters 222 in the corresponding energy storage converter circuit 220; if the flag or button is set to stop the energy storage converter circuit 220, the coordination controller 212 cannot control the multiple battery clusters 222 in the corresponding energy storage converter circuit 220.

[0105] In one example, the energy storage management device 210 further includes a remote server. The remote server can be installed in a terminal device that is remotely connected to the energy storage management device 210 for controlling the energy storage management device 210, thereby controlling the energy storage system 200. For example, the remote server can set a flag corresponding to each energy storage converter circuit 220 in the application server 211 to implement a one-button start / stop control function for the energy storage converter circuit 220.

[0106] In another example, the application server 211 and the coordination control 212 are further configured to display the acquired second state data, the first state data, and the data of the converter 221 , as well as the generated start / stop control instructions.

[0107] In this embodiment, in order to facilitate viewing of data from the application server 211 and each coordination controller 212 , the energy storage management device 210 further includes a KVM (Keyboard, Video, Mouse) switch for communicating with the application server 211 and the coordination controller 212 to display data in the application server 211 or the coordination controller 212 .

[0108] By starting or stopping the energy storage conversion circuit 220 through the application server 211, the time required to stop the energy storage conversion circuit 220 is simplified, and efficiency is improved. At the same time, by adding a layer of startup steps, the possibility of misoperation of the energy storage management device 210 can also be reduced, thereby improving the safety of the energy storage system 200.

[0109] In a possible implementation, the application server 211 may also serve as a backup device for the coordination controller 212. When the coordination controller 212 malfunctions, the energy storage and current conversion circuit 220 corresponding to the abnormal coordination controller 212 is controlled by the application server 211.

[0110] Optionally, the coordination controller 212 is specifically used to: if the change between the first state data obtained at a historical time and the first state data currently obtained is less than a third threshold, then generate the first start-stop control signal of the multiple battery clusters 222 in the corresponding energy storage conversion circuit 220 based on the currently obtained first state data and the data of the converter 221.

[0111] The data storage module also stores the first state data obtained by the coordination controller 212 in the historical time. The change between the first state data obtained in the historical time and the first state data obtained currently is less than the third threshold, indicating that the state data obtained by the coordination controller 212 in the historical time fluctuates little and the data is relatively accurate.

[0112] In this embodiment, a first start / stop control signal may be generated according to the regional status data and the data of the converter 221 , and the first start / stop control signal may be sent to the corresponding energy storage converter circuit 220 .

[0113] Optionally, the coordination controller 212 is further configured to generate a takeover request if a difference between the first state data acquired at a historical time and the first state data acquired currently is greater than or equal to a third threshold.

[0114] In this embodiment, the application server 211 is also used to: respond to a takeover request, shut down the coordination controller 212, and generate start-stop control signals for the multiple battery clusters 222 in the energy storage conversion circuit 220 corresponding to the first state data obtained based on the second state data of the multiple battery clusters 222 in the energy storage conversion circuit 220 corresponding to the first state data and the data of the converter 221.

[0115] If the difference between the first state data acquired in the past and the currently acquired first state data exceeds the third threshold, this indicates that the state data acquired by coordination controller 212 fluctuated significantly during the past, indicating an anomaly. In this case, instead of generating the first start / stop control signal, a takeover request can be directly generated to enable application server 211 to control energy storage converter circuit 220.

[0116] Specifically, in response to the takeover request generated by the coordination controller 212, the application server 211 generates start / stop control signals for the multiple battery clusters 222 in the energy storage conversion circuit 220 corresponding to the coordination controller 212 based on the second state data and the data of the converter 221 obtained from the coordination controller 212 or the data storage module. The method for generating the start / stop control signals is the same as the method for the coordination controller 212 to generate the first start / stop control signals in the aforementioned embodiment, with only the first state data being replaced by the second state data. This description will not be repeated here.

[0117] In this embodiment, when it is determined that the status data obtained by the coordination controller 212 is abnormal, the application server 211 is switched to control the energy storage conversion circuit 220, thereby avoiding the coordination controller 212 generating the first start-stop control signal based on the abnormal first status data, simplifying the process and improving the efficiency of the energy storage management device 210.

[0118] Figure 6 This is a schematic diagram of the structure of an energy storage system provided in an embodiment of the present application. Figure 6 As shown, the energy storage system provided in this embodiment includes at least one energy storage conversion circuit 220, a communication device 230 and the energy storage management device 210 provided in the above embodiment.

[0119] Continue to refer to Figure 2 Each energy storage conversion circuit 220 includes a converter 221 and multiple battery clusters 222; the energy storage conversion circuit 220 is connected to the energy storage management device 210 through the communication device 230; the energy storage management device 210 is used to control the operation of at least one energy storage conversion circuit 220.

[0120] In one example, the communication device 230 may be a cable, and the energy storage management device 210 is connected to the energy storage AC circuit 220 via the cable.

[0121] In another example, the communication device 230 may be an optoelectronic switch, which converts the electrical signal from the energy storage management device 210 into an optical signal for transmission, and converts the optical signal into an electrical signal before reaching the energy storage conversion circuit 220. This allows for long-distance and high-speed transmission.

[0122] The implementation principle and technical effects of the energy storage system provided in this embodiment can refer to the energy storage management device 210 and the energy storage system 200 provided in the above embodiments, and are not described in detail in this embodiment.

[0123] Figure 7 This is a flow chart of an energy storage management method provided in an embodiment of the present application. The energy storage management method provided in this embodiment is applied to the energy storage system provided in the above embodiment, such as Figure 7 As shown, the energy storage management method provided in this embodiment includes:

[0124] Step S701 , obtaining first status data of the plurality of battery clusters 222 in the corresponding energy storage and conversion circuit 220 and data of the converter 221 , and generating first start / stop control signals for the plurality of battery clusters 222 in the corresponding energy storage and conversion circuit 220 based on the obtained first status data and data of the converter 221 .

[0125] Step S702 , obtaining second status data of the plurality of battery clusters 222 and first status data obtained by at least one coordination controller 212 , and determining whether to send a first start / stop control signal to the corresponding energy storage conversion circuit 220 based on a comparison result of the first status data and the second status data.

[0126] Optionally, the energy storage management method also includes: if the absolute value of the difference between the first state data and the second state data is greater than a first threshold, then based on the data of the converter 221, as well as the first state data and / or the second state data, determining the second start-stop control signal of the corresponding energy storage converter circuit 220; and sending the second start-stop control signal to the corresponding energy storage converter circuit 220.

[0127] Optionally, if the absolute value of the difference between the first state data and the second state data is greater than the first threshold, the second start-stop control signal of the corresponding energy storage conversion circuit 220 is determined based on the data of the converter 221, as well as the first state data and / or the second state data, including: if the absolute value of the difference between the first state data and the second state data is greater than the first threshold and less than or equal to the second threshold, a second start-stop control signal is generated according to the first state data and the second state data; if the absolute value of the difference between the first state data and the second state data is greater than the second threshold, a stop operation signal is generated, and the stop operation signal is sent to the energy storage conversion circuit 220 corresponding to the first state data.

[0128] Optionally, based on the comparison result of the first state data and the second state data, determine whether to send the first start-stop control signal to the corresponding energy storage conversion circuit 220, including: if the absolute value of the difference between the first state data and the second state data is less than or equal to the first threshold, then send the first start-stop control signal to the energy storage conversion circuit 220 corresponding to the first state data.

[0129] Optionally, the energy storage management method further includes: controlling the start and stop of at least one energy storage conversion circuit 220 through the application server 211 , so as to control the start and stop of multiple battery clusters 222 in the corresponding energy storage conversion circuit 220 through the coordination controller 212 .

[0130] Optionally, the energy storage management method further includes: if the change between the first state data obtained at a historical time and the first state data currently obtained is less than a third threshold, then generating a first start-stop control signal for multiple battery clusters 222 in the corresponding energy storage conversion circuit 220 based on the currently obtained first state data and the data of the converter 221.

[0131] Optionally, the energy storage management method further includes: if the change between the first state data obtained at a historical time and the first state data currently obtained is greater than or equal to a third threshold, a takeover request is generated; according to the takeover request, the coordination controller 212 is turned off, and based on the second state data of the multiple battery clusters 222 in the energy storage conversion circuit 220 corresponding to the obtained coordination controller 212 and the data of the converter 221, a start-stop control signal of the multiple battery clusters 222 in the energy storage conversion circuit 220 corresponding to the first state data is generated.

[0132] Optionally, the first state data and the second state data of the battery cluster 222 include the voltage, current, and temperature of the battery cluster 222 .

[0133] The energy storage management method provided in the embodiment of the present application determines whether to send the first start-stop control signal to the corresponding energy storage conversion circuit 220 by comparing the acquired second state data with the first state data, verifies the accuracy of the first state data used when generating the first start-stop control signal, avoids errors in the first start-stop control signal, and improves the accuracy and safety of the control of the energy storage system 200.

[0134] The present application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0135] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the above method is implemented.

[0136] The readable storage medium may be implemented by any type of volatile or nonvolatile memory device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0137] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist in a device as discrete components.

[0138] The division of units is merely a logical functional division; actual implementations may employ alternative divisions, such as combining or integrating multiple units or components into another system, or omitting or disabling certain features. Furthermore, any direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units, either through an interface, electrical, mechanical, or other means.

[0139] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0140] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0141] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the method of the present invention. The aforementioned storage medium includes various media that can store program code, such as USB flash drives, mobile hard drives, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical disks.

[0142] Those skilled in the art will appreciate that all or part of the steps in the above-described method embodiments can be implemented using hardware associated with program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0143] Finally, it should be noted that those skilled in the art will readily identify other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The present invention is not limited to the precise structure described above and illustrated in the accompanying drawings, and various modifications and variations may be made without departing from the scope thereof. The scope of the present invention is limited solely by the appended claims.

Claims

1. An energy storage management device, characterized in that: Applied to an energy storage system, the energy storage system is provided with at least one energy storage conversion circuit, each of the energy storage conversion circuits includes a converter and multiple battery clusters; the energy storage management device includes an application server and at least one coordination controller; The coordination controller is configured to obtain first status data of a plurality of battery clusters in a corresponding energy storage and conversion circuit and converter data, and generate first start / stop control signals for the plurality of battery clusters in the corresponding energy storage and conversion circuit based on the obtained first status data and converter data; The application server is configured to obtain the second status data of the multiple battery clusters and the first status data obtained by the at least one coordination controller, and determine whether to send the first start-stop control signal to the corresponding energy storage conversion circuit based on a comparison result between the first status data and the second status data.

2. The device according to claim 1, characterized in that The application server is specifically used for: If the absolute value of the difference between the first state data and the second state data is greater than a first threshold, determining a second start / stop control signal of the corresponding energy storage converter circuit based on the data of the converter and the first state data and / or the second state data; The second start-stop control signal is sent to the corresponding energy storage conversion circuit.

3. The device according to claim 2, characterized in that The application server is specifically used for: If the absolute value of the difference between the first state data and the second state data is greater than a first threshold and less than or equal to a second threshold, generating the second start-stop control signal according to the first state data and the second state data; If the absolute value of the difference between the first state data and the second state data is greater than the second threshold, a stop operation signal is generated and sent to the energy storage conversion circuit corresponding to the first state data.

4. The device according to claim 2, characterized in that The application server is further configured to: if the absolute value of the difference between the first state data and the second state data is less than or equal to the first threshold, send the first start / stop control signal to the energy storage conversion circuit corresponding to the first state data.

5. The device according to any one of claims 1 to 4, characterized in that The application server is further configured to control the start and stop of the at least one energy storage and conversion circuit, so as to control the start and stop of multiple battery clusters in the corresponding energy storage and conversion circuit through the coordination controller.

6. The device according to claim 1, characterized in that The coordination controller is specifically used to: if the change between the first state data obtained at a historical time and the first state data currently obtained is less than a third threshold, then generate the first start-stop control signal of multiple battery clusters in the corresponding energy storage conversion circuit according to the currently obtained first state data and the data of the converter.

7. The device according to claim 6, characterized in that The coordination controller is further configured to: generate a takeover request if a difference between the first state data acquired at a historical time and the first state data acquired currently is greater than or equal to a third threshold; The application server is also used to: in response to the takeover request, shut down the coordination controller, and generate start-stop control signals for the multiple battery clusters in the energy storage conversion circuit corresponding to the first state data based on the second state data of the multiple battery clusters in the energy storage conversion circuit corresponding to the acquired first state data and the data of the converter.

8. The device according to any one of claims 1 to 4, characterized in that The first state data and the second state data of the battery cluster include voltage, current, and temperature of the battery cluster.

9. An energy storage system, characterized in that: comprising at least one energy storage conversion circuit, a communication device, and the energy storage management device according to any one of claims 1 to 8; Each of the energy storage and current conversion circuits includes a converter and a plurality of battery clusters; The energy storage conversion circuit is connected to the energy storage management device via the communication device; The energy storage management device is used to control the operation of the at least one energy storage conversion circuit.

10. A method for energy storage management, characterized in that: Applied to the energy storage system of claim 9, the method comprises: Acquire first state data of a plurality of battery clusters and converter data in a corresponding energy storage conversion circuit, and generate first start / stop control signals for the plurality of battery clusters in the corresponding energy storage conversion circuit based on the acquired first state data and converter data; Obtain the second status data of the multiple battery clusters, and obtain the first status data obtained by the at least one coordination controller, and determine whether to send the first start-stop control signal to the corresponding energy storage conversion circuit based on a comparison result of the first status data and the second status data.

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