Domain controller, energy storage system and control method of energy storage system

Abstract

The embodiment of the application provides a domain controller for an energy storage system, the energy storage system comprising an energy storage unit and a non-energy storage unit, the non-energy storage unit being used for assisting the energy storage unit; the domain controller integrates a management module of the energy storage unit and a management module of the non-energy storage unit, and is used for managing the energy storage unit and the non-energy storage unit. The technical scheme of the application can intelligently adjust the management strategy of the energy storage system, and realizes efficient and energy-saving management of the energy storage system.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a domain controller, an energy storage system, and a control method for the energy storage system. Background Technology

[0002] Against the backdrop of national power reform and a significant increase in the installed capacity of renewable energy power generation, energy storage technology will play an important role in the five major links of power system: generation, transmission, transformation, distribution and consumption. Battery energy storage systems are being used more and more widely in the fields of new energy, smart grids and energy-saving technologies.

[0003] With the development of the energy storage industry, the working efficiency, safety performance and cycle life of battery energy storage systems have become the focus of attention. How to manage battery energy storage systems reasonably and improve their performance is an urgent problem to be solved. Summary of the Invention

[0004] This application provides a domain controller, an energy storage system, and a control method for the energy storage system, which can intelligently adjust the management strategy of the energy storage system to achieve efficient energy-saving management of the energy storage system.

[0005] In a first aspect, a domain controller is provided for an energy storage system, the energy storage system including energy storage units and non-energy storage units, the non-energy storage units being used to assist the energy storage units; the domain controller integrates management modules for the energy storage units and management modules for the non-energy storage units, for managing the energy storage units and the non-energy storage units.

[0006] In this embodiment, the management module of the energy storage unit and the management module of the non-energy storage unit are integrated into a domain controller. Compared with the existing scheme where the management modules of the energy storage unit and the non-energy storage unit are set up separately, the solution of integrating the management modules of the energy storage unit and the non-energy storage unit into the domain controller can centrally control the management modules of the energy storage unit and the non-energy storage unit through the domain controller. This enables smooth and rapid information interaction between the management modules of the energy storage unit and the non-energy storage unit, improves system management efficiency, and allows for integrated processing of information from the management modules of the energy storage unit and the non-energy storage unit, avoiding the waste of system resources caused by multiple information processing.

[0007] In one possible implementation, the management module of the energy storage unit includes at least one of a Battery Management System (BMS), a Power Converter System (PCS), and an Energy Management System (EMS).

[0008] The Battery Management System (BMS), Power Conversion System (PCS), and Energy Management System (EMS) can manage and control the entire battery energy storage system based on the status information of the energy storage units.

[0009] In one possible implementation, the management module of the energy storage unit includes multiple control nodes, and the domain controller integrates the multiple control nodes.

[0010] Domain controllers integrate multiple control nodes of the energy storage unit's management module, which can improve the integration of the energy storage unit's management module and reduce hardware costs.

[0011] In one possible implementation, the non-energy storage unit includes a thermal management unit or a fire suppression unit.

[0012] The thermal management unit and the fire protection unit can perform thermal management on the energy storage unit, cooling it down when the temperature is too high and heating it up when the temperature is too low.

[0013] In one possible implementation, the thermal management unit integrates the thermal management unit of the energy storage unit and the thermal management unit of the PCS.

[0014] The thermal management unit of the energy storage unit and the thermal management unit of the PCS are integrated together, and energy can be converted between the two thermal management units to improve the system's energy utilization rate.

[0015] In one possible implementation, the domain controller is used to manage the non-energy storage units based on the status information of the energy storage units.

[0016] The domain controller manages the non-energy storage units based on the status information of the energy storage units, so that the non-energy storage units can adjust the operating conditions of the energy storage units to the required operating conditions.

[0017] In one possible implementation, the state information of the energy storage unit includes at least one of temperature, voltage, state of charge (SOC), state of health (SOH), and charge / discharge state.

[0018] Temperature, voltage, state of charge (SOC), state of health (SOH), and charge / discharge status of an energy storage unit are all state information related to the unit's operating status. Obtaining this state information allows us to understand the unit's real-time operating conditions.

[0019] In one possible implementation, the domain controller is configured to: obtain the intelligent management strategy of the non-energy storage unit based on the status information of the energy storage unit; and manage the non-energy storage unit according to the intelligent management strategy.

[0020] The domain controller obtains the intelligent management strategy for non-energy storage units based on the status information of the energy storage units. In this way, the management strategy for non-energy storage units can be flexibly adjusted according to the status information of the energy storage units, and the non-energy storage units can be managed according to the intelligent management strategy so that the non-energy storage units can adjust the working conditions of the energy storage units to the required working conditions.

[0021] In one possible implementation, the intelligent management strategy is a management strategy associated with the user behavior of the energy storage unit.

[0022] Intelligent management strategies are linked to user behavior of energy storage units, enabling efficient management of non-energy storage units and allowing them to adjust the operating conditions of energy storage units to the required operating conditions.

[0023] In one possible implementation, the domain controller is configured to: obtain the intelligent management strategy of the non-energy storage unit from the energy storage cloud server based on the status information of the energy storage unit.

[0024] Energy storage cloud servers are simple, efficient, safe, reliable, and have elastically scalable processing capabilities. They can store large amounts of information and facilitate information exchange within the energy storage system, resulting in high efficiency and speed and improved system management efficiency.

[0025] In one possible implementation, the domain controller is configured to: acquire the status information of the energy storage unit and send the status information to the energy storage cloud server; and receive the intelligent management strategy sent by the energy storage cloud server.

[0026] The domain controller obtains intelligent management policies for non-energy storage units through the energy storage cloud server, which is simple, efficient, safe and reliable, and improves the management efficiency of the system.

[0027] In one possible implementation, the domain controller is configured to: acquire first status information of the energy storage unit and send the first status information to the energy storage cloud server; receive a first instruction sent by the energy storage cloud server, acquire second status information of the energy storage unit according to the first instruction, and send the second status information to the energy storage cloud server, wherein the second status information includes more information than the first status information, and the second status information is used by the energy storage cloud server to determine the intelligent management strategy; and receive the intelligent management strategy sent by the energy storage cloud server.

[0028] The domain controller obtains the first status information of the energy storage unit and sends it to the energy storage cloud server. Then, according to the first instruction sent by the energy storage cloud server, it obtains the second status information of the energy storage unit and sends it to the energy storage cloud server. The energy storage cloud server obtains the first and second status information and finally determines the intelligent management strategy for the non-energy storage unit. The domain controller obtains the intelligent management strategy from the energy storage cloud server and manages the non-energy storage unit according to the intelligent management strategy so that the non-energy storage unit adjusts the working conditions of the energy storage unit to the required working conditions.

[0029] In one possible implementation, the domain controller is configured to: determine the intelligent management strategy for the non-energy storage unit based on the status information of the energy storage unit.

[0030] The domain controller determines the intelligent management strategy for non-energy storage units based on the status information of the energy storage units. This eliminates the need for information interaction and data calculation by other processing units, allowing the domain controller to determine the intelligent management strategy for non-energy storage units on its own. This reduces information interaction and saves system resources.

[0031] In one possible implementation, the intelligent management strategy includes: before the energy storage unit starts its working mode, activating the non-energy storage unit to adjust the working conditions of the energy storage unit, so that the energy storage unit is in a preset working condition when the working mode is started.

[0032] Before the energy storage unit starts working, the non-energy storage units adjust the working conditions of the energy storage unit so that the energy storage unit is in the preset working conditions when it starts working. In this way, the energy storage unit can be in the appropriate working conditions when it starts working, thus improving the working efficiency of the energy storage unit.

[0033] Secondly, an energy storage system is provided, comprising: an energy storage unit; a non-energy storage unit, the non-energy storage unit being used to assist the energy storage unit; and a domain controller, the domain controller integrating the management module of the energy storage unit and the management module of the non-energy storage unit, for managing the energy storage unit and the non-energy storage unit.

[0034] In one possible implementation, the management module of the energy storage unit includes at least one of a battery management system (BMS), a power conversion system (PCS), and an energy management system (EMS).

[0035] In one possible implementation, the management module of the energy storage unit includes multiple control nodes, and the domain controller integrates the multiple control nodes.

[0036] In one possible implementation, the non-energy storage unit includes a thermal management unit or a fire suppression unit.

[0037] In one possible implementation, the thermal management unit integrates the thermal management unit of the energy storage unit and the thermal management unit of the PCS.

[0038] In one possible implementation, the domain controller is used to manage the non-energy storage units based on the status information of the energy storage units.

[0039] In one possible implementation, the state information of the energy storage unit includes at least one of temperature, voltage, state of charge (SOC), state of health (SOH), and charge / discharge state.

[0040] In one possible implementation, the domain controller is configured to: obtain the intelligent management strategy of the non-energy storage unit based on the status information of the energy storage unit; and manage the non-energy storage unit according to the intelligent management strategy.

[0041] In one possible implementation, the intelligent management strategy is a management strategy associated with the user behavior of the energy storage unit.

[0042] In one possible implementation, the energy storage system further includes an energy storage cloud server, and the domain controller is configured to: obtain the intelligent management strategy of the non-energy storage unit from the energy storage cloud server based on the status information of the energy storage unit.

[0043] In one possible implementation, the domain controller is configured to: acquire the status information of the energy storage unit and send the status information to the energy storage cloud server; the energy storage cloud server is configured to: determine the intelligent management strategy based on the status information and send the intelligent management strategy to the domain controller.

[0044] In one possible implementation, the energy storage cloud server is used to: extract first user behavior data of the energy storage unit based on the status information; and determine the intelligent management strategy corresponding to the first user behavior data based on the first user behavior data.

[0045] The energy storage cloud server extracts the first user's usage behavior data of the energy storage unit based on the status information and determines the intelligent management strategy corresponding to the first user's usage behavior data. In this way, the management strategy of non-energy storage units can be flexibly adjusted according to the status information of the energy storage unit.

[0046] In one possible implementation, the domain controller is configured to: acquire first status information of the energy storage unit and send the first status information to the energy storage cloud server; the energy storage cloud server is configured to: send a first instruction to the domain controller based on the first status information, the first instruction being used to instruct the domain controller to send second status information of the energy storage unit, wherein the second status information includes more information than the first status information; the domain controller is further configured to: acquire the second status information of the energy storage unit based on the first instruction and send the second status information to the energy storage cloud server; the energy storage cloud server is further configured to: determine the intelligent management strategy based on the second status information and send the intelligent management strategy to the domain controller.

[0047] In one possible implementation, the energy storage cloud server is configured to: extract second user behavior data of the energy storage unit based on the first status information; and, if it is determined that the second user behavior data has application characteristics corresponding to the intelligent management strategy, send the first instruction to the domain controller.

[0048] The energy storage cloud server first extracts the second user behavior data of the energy storage unit based on the first status information. If it is determined that the second user behavior data has the application characteristics corresponding to the intelligent management strategy, it then sends a first instruction to the domain controller, instructing the domain controller to send the second status information of the energy storage unit. The second status information contains more information than the first status information. Therefore, the energy storage cloud server can determine the intelligent management strategy of the non-energy storage unit based on the second status information and manage the non-energy storage unit according to the intelligent management strategy, so that the non-energy storage unit adjusts the working conditions of the energy storage unit to the required working conditions.

[0049] In one possible implementation, the domain controller is configured to: determine the intelligent management strategy for the non-energy storage unit based on the status information of the energy storage unit.

[0050] In one possible implementation, the intelligent management strategy includes: before the energy storage unit starts its working mode, activating the non-energy storage unit to adjust the working conditions of the energy storage unit, so that the energy storage unit is in a preset working condition when the working mode is started.

[0051] Thirdly, a control method for an energy storage system is provided. The energy storage system includes an energy storage unit, a non-energy storage unit, and a domain controller. The non-energy storage unit is used to assist the energy storage unit. The domain controller integrates the management modules of the energy storage unit and the non-energy storage unit. The method includes: the domain controller managing the energy storage unit and the non-energy storage unit.

[0052] In one possible implementation, the management module of the energy storage unit includes at least one of a battery management system (BMS), a power conversion system (PCS), and an energy management system (EMS).

[0053] In one possible implementation, the management module of the energy storage unit includes multiple control nodes, and the domain controller integrates the multiple control nodes.

[0054] In one possible implementation, the non-energy storage unit includes a thermal management unit or a fire suppression unit.

[0055] In one possible implementation, the thermal management unit integrates the thermal management unit of the energy storage unit and the thermal management unit of the PCS.

[0056] In one possible implementation, the domain controller manages the energy storage unit and the non-energy storage unit, including: the domain controller manages the non-energy storage unit based on the status information of the energy storage unit.

[0057] In one possible implementation, the state information of the energy storage unit includes at least one of temperature, voltage, state of charge (SOC), state of health (SOH), and charge / discharge state.

[0058] In one possible implementation, the domain controller manages the non-energy storage unit based on the status information of the energy storage unit, including: the domain controller obtaining an intelligent management strategy for the non-energy storage unit based on the status information of the energy storage unit; and the domain controller managing the non-energy storage unit according to the intelligent management strategy.

[0059] In one possible implementation, the intelligent management strategy is a management strategy associated with the user behavior of the energy storage unit.

[0060] In one possible implementation, the energy storage system further includes an energy storage cloud server, and the domain controller obtains the intelligent management strategy of the non-energy storage unit based on the status information of the energy storage unit, including: the domain controller obtains the intelligent management strategy of the non-energy storage unit from the energy storage cloud server based on the status information of the energy storage unit.

[0061] In one possible implementation, the domain controller obtains the intelligent management strategy for the non-energy storage unit from the energy storage cloud server based on the status information of the energy storage unit, including: the domain controller obtains the status information of the energy storage unit and sends the status information to the energy storage cloud server, so that the energy storage cloud server determines the intelligent management strategy based on the status information and sends the intelligent management strategy to the domain controller.

[0062] In one possible implementation, the energy storage cloud server determines the intelligent management strategy based on the status information, including:

[0063] The energy storage cloud server extracts the first user usage behavior data of the energy storage unit based on the status information, and determines the intelligent management strategy corresponding to the first user usage behavior data based on the first user usage behavior data.

[0064] In one possible implementation, the domain controller obtains the intelligent management strategy for the non-energy storage unit from the energy storage cloud server based on the status information of the energy storage unit, including: the domain controller obtaining first status information of the energy storage unit and sending the first status information to the energy storage cloud server, so that the energy storage cloud server sends a first instruction to the domain controller based on the first status information, the first instruction being used to instruct the domain controller to send second status information of the energy storage unit, wherein the second status information includes more information than the first status information; the domain controller obtaining the second status information of the energy storage unit based on the first instruction and sending the second status information to the energy storage cloud server, so that the energy storage cloud server determines the intelligent management strategy based on the second status information and sends the intelligent management strategy to the domain controller.

[0065] In one possible implementation, the energy storage cloud server sends a first instruction to the domain controller based on the first status information, including: the energy storage cloud server extracts second user usage behavior data of the energy storage unit based on the first status information, and sends the first instruction to the domain controller when it is determined that the second user usage behavior data has application characteristics corresponding to the intelligent management strategy.

[0066] In one possible implementation, the domain controller obtains the intelligent management strategy of the non-energy storage unit based on the status information of the energy storage unit, including: the domain controller determines the intelligent management strategy of the non-energy storage unit based on the status information of the energy storage unit.

[0067] In one possible implementation, the intelligent management strategy includes: before the energy storage unit starts its working mode, activating the non-energy storage unit to adjust the working conditions of the energy storage unit, so that the energy storage unit is in a preset working condition when the working mode is started.

[0068] Fourthly, a control device for an energy storage system is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to invoke the computer program to enable the device to implement the method described in the third aspect or any possible implementation thereof.

[0069] Fifthly, a readable storage medium is provided, the readable storage medium storing a computer program, which, when executed by a computing device, causes the computing device to implement the method described in the third aspect or any possible implementation thereof.

[0070] This application provides a domain controller for an energy storage system. This domain controller integrates the management modules of the energy storage units and the management modules of non-energy storage units. Compared with the existing schemes where the management modules of the energy storage units and non-energy storage units are set up separately, the solution of integrating the management modules of the energy storage units and non-energy storage units into the domain controller can centrally control the management modules of the energy storage units and non-energy storage units through the domain controller. This enables smooth and rapid information interaction between the management modules of the energy storage units and non-energy storage units, improves system management efficiency, and allows for integrated processing of information from the management modules of the energy storage units and non-energy storage units, avoiding the waste of system resources caused by multiple information processing. Attached Figure Description

[0071] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0072] Figure 1 This is a schematic diagram of an energy storage system disclosed in an embodiment of this application;

[0073] Figure 2 This is a schematic diagram of an energy storage system disclosed in an embodiment of this application;

[0074] Figure 3 This is a schematic diagram of an energy storage system disclosed in an embodiment of this application;

[0075] Figure 4 This is a schematic flowchart of a control method for an energy storage system disclosed in an embodiment of this application;

[0076] Figure 5 This is a schematic flowchart of a control method for an energy storage system disclosed in an embodiment of this application;

[0077] Figure 6This is a schematic flowchart of a control method for an energy storage system disclosed in an embodiment of this application;

[0078] Figure 7 This is a schematic flowchart of a control method for an energy storage system disclosed in an embodiment of this application;

[0079] Figure 8 This is a schematic flowchart of a method for optimizing the thermal management strategy of peak shaving and valley filling application disclosed in an embodiment of this application;

[0080] Figure 9 This is a schematic diagram of the control device of an energy storage system disclosed in an embodiment of this application. Detailed Implementation

[0081] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0082] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0083] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0084] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0085] Against the backdrop of national power sector reform and a significant increase in installed capacity of renewable energy generation, energy storage technology will play a crucial role in all five stages of the power system: generation, transmission, transformation, distribution, and consumption. Battery energy storage systems are being used more and more widely in fields such as new energy, smart grids, and energy-saving technologies.

[0086] Battery energy storage systems are an indispensable component in distributed generation and microgrid systems, enabling functions such as energy storage, peak shaving and valley filling, and mitigating fluctuations in renewable energy output. With the continuous development of energy storage technology and strong global support for battery and new energy technologies, large-scale battery energy storage systems are increasingly being researched and applied.

[0087] With the development of the energy storage industry, the efficiency, safety, and cycle life of battery energy storage systems have become key concerns. These performance characteristics are closely related to the management of battery energy storage systems; proper management can effectively improve their performance. Currently, most battery energy storage system management methods are decentralized, meaning each unit or module is managed separately without integration. This leads to poor information exchange and delays between units or modules, failing to grasp the overall status of the battery energy storage system in a timely manner. This discrepancy between management and actual conditions results in a decline in battery energy storage system performance over time. Therefore, how to rationally manage battery energy storage systems and improve their performance is a pressing issue that needs to be addressed.

[0088] In view of this, embodiments of this application provide a domain controller for an energy storage system. This domain controller integrates the management modules for energy storage units and non-energy storage units. Compared to existing energy storage systems where the management modules for energy storage units and non-energy storage units are dispersed, this application's solution, integrating these modules into the domain controller, allows for centralized control of both modules, ensuring smooth and rapid information exchange and improving system management efficiency. Furthermore, it enables integrated processing of information from both modules, avoiding resource waste caused by multiple information processing steps.

[0089] Figure 1 This is a schematic diagram of an energy storage system 100 provided in this application.

[0090] The energy storage system 100 contains multiple battery clusters, such as Figure 1The battery clusters shown are 1 to m, where m can be a natural number greater than 1. In practical applications, the number of battery clusters can be flexibly adjusted according to the energy storage capacity. If the energy storage capacity is large, the number of battery clusters can be increased appropriately, and if the energy storage capacity is small, the number of battery clusters can be reduced appropriately.

[0091] Each battery cluster consists of at least two energy storage systems (ESS) connected in series, such as Figure 1 The system comprises energy storage modules 1 to j, where j can be a natural number greater than or equal to 2. Each energy storage module (ESS) consists of several energy storage elements connected in series or parallel, forming the smallest energy storage and management unit. To enable the detection and control of the energy storage system, each energy storage module and battery cluster is equipped with a battery management system (BMS) to monitor battery information such as state of charge (SOC), temperature, and current, and to exchange information in real time with the upper-level energy management system (EMS) or power conversion system (PCS) to achieve the management and control of the entire battery energy storage system.

[0092] The battery management system (BMS), energy management system (EMS), and power conversion system (PCS) of the aforementioned energy storage system are usually designed separately in the energy storage system, and there are problems such as delays in information exchange and poor communication between the systems.

[0093] This application provides a domain controller for an energy storage system, which can provide... Figure 1 The energy storage system 100 in the middle.

[0094] like Figure 2 As shown, the energy storage system 200 includes an energy storage unit 201 and a non-energy storage unit 202. The non-energy storage unit 202 is used to assist the energy storage unit 201. The non-energy storage unit 202 may include, for example, a thermal management unit or a fire suppression unit. The thermal management unit can cool down the battery pack of the energy storage unit 201 when the temperature is too high, and can heat up the battery pack when it needs to be heated to increase the charging and discharging rate. The fire suppression unit can extinguish fires when thermal runaway occurs in the battery energy storage system.

[0095] Domain controller 203 integrates the management module 2011 of energy storage unit 201 and the management module 2021 of non-energy storage unit 202 for managing energy storage unit 201 and non-energy storage unit 202. Domain controller 203 integrates the management module 2011 of energy storage unit 201 and the management module 2021 of non-energy storage unit 201 together to form a "domain". The various management modules within the domain are connected by communication lines to achieve centralized management. Because the management module 2011 of energy storage unit 201 and the management module 2021 of non-energy storage unit 202 are integrated, information exchange between the various management modules is smooth and rapid, and information from multiple management modules can be integrated and processed, avoiding the waste of system resources caused by multiple information processing steps.

[0096] In this embodiment, the management module 2011 of the energy storage unit 201 and the management module 2021 of the non-energy storage unit 202 are integrated into the domain controller 203. Compared with the existing scheme where the management modules 2011 of the energy storage unit 201 and the non-energy storage unit 202 of the energy storage system 200 are set up separately, the solution of integrating the management modules 2011 of the energy storage unit 201 and the non-energy storage unit 202 into the domain controller 203 can centrally control the management modules 2011 of the energy storage unit 201 and the non-energy storage unit 202 through the domain controller 203. This enables smooth and rapid information interaction between the management modules 2011 of the energy storage unit 201 and the non-energy storage unit 202, improving system management efficiency. Furthermore, it allows for integrated processing of information from the management modules 2011 of the energy storage unit 201 and the non-energy storage unit 202, avoiding the waste of system resources caused by multiple information processing steps.

[0097] Optionally, in this embodiment of the application, the management module 2011 of the energy storage unit 201 includes at least one of the battery management system (BMS), power conversion system (PCS), and energy management system (EMS).

[0098] A Battery Management System (BMS) monitors battery information such as State of Charge (SOC), temperature, and current, and interacts with the Power Conversion System (PCS) or Energy Management System (EMS) to manage and control the entire battery energy storage system. For example, the BMS estimates the SOC of each battery to ensure it remains within a reasonable range, preventing damage from overcharging or over-discharging. During charging and discharging, the BMS collects real-time data on the terminal voltage and temperature of each battery cell, the charging and discharging current, and the total voltage of the battery pack to prevent overcharging or over-discharging, thereby extending battery life.

[0099] It should be understood that the management module 2011 of the energy storage unit 201 described above is merely an exemplary example and does not constitute a limitation on this application. The management module 2011 of the energy storage unit 201 in the embodiments of this application may include any of the management modules described above, but is not limited to the management modules described above.

[0100] Optionally, in this embodiment, the management module 2011 of the energy storage unit 201 includes multiple control nodes. The domain controller 203 can also integrate the multiple control nodes of the management module 2011 of the energy storage unit 201. For example, it can integrate the control module, display module, and wireless communication module of the battery management system (BMS), and integrate the information receiving, information processing, and information sending of the battery management system (BMS) into one, thereby improving the speed of information interaction, improving the efficiency of information processing, and avoiding multi-layer information dispersion transmission, thus saving system resources.

[0101] Domain controller 203 integrates multiple control nodes of management module 2011 of energy storage unit 201, which can improve the integration of management module 2011 of energy storage unit 201 and reduce hardware costs.

[0102] Optionally, in this embodiment, the thermal management unit integrates the thermal management unit of the energy storage unit 201 and the thermal management unit of the power conversion system (PCS). Thus, when the temperature of the PCS is too high, the thermal management unit of the PCS can transfer heat from the PCS to the battery's thermal management unit; simultaneously, heat from the battery can also be transferred from the battery's thermal management unit to the PCS's thermal management unit. Because the thermal management units of the battery and the PCS are integrated, the energy transfer between them is centrally controlled by the domain controller 203, ensuring timely and rapid energy transfer between the two units.

[0103] The thermal management unit of the energy storage unit 201 and the thermal management unit of the PCS are integrated together, and energy can be converted between the two thermal management units to improve the system energy utilization rate.

[0104] Optionally, in this embodiment, the domain controller 203 is used to manage the non-energy storage unit 202 based on the status information of the energy storage unit 201.

[0105] Domain controller 203 manages non-energy storage unit 202 based on the status information of energy storage unit 201, so that non-energy storage unit 202 adjusts the operating conditions of energy storage unit 201 to the required operating conditions.

[0106] Furthermore, in this embodiment, the domain controller 203 can obtain the intelligent management strategy of the non-energy storage unit 202 based on the status information of the energy storage unit 201, and manage the non-energy storage unit 202 according to the intelligent management strategy.

[0107] Domain controller 203 obtains the intelligent management strategy of non-energy storage unit 202 based on the status information of energy storage unit 201. In this way, the management strategy of non-energy storage unit 202 can be flexibly adjusted according to the status information of energy storage unit 201, and non-energy storage unit 202 can be managed according to the intelligent management strategy so that non-energy storage unit 202 adjusts the working conditions of energy storage unit 201 to the required working conditions.

[0108] Optionally, in this embodiment, the intelligent management strategy is a management strategy associated with the user behavior of the energy storage unit 201.

[0109] The intelligent management strategy is linked to the user behavior of the energy storage unit 201, which can efficiently manage the non-energy storage unit 202 and enable the non-energy storage unit 202 to adjust the working conditions of the energy storage unit 201 to the required working conditions.

[0110] Optionally, in this embodiment of the application, the state information of the energy storage unit 201 includes at least one of temperature, voltage, state of charge (SOC), state of health (SOH), and charge / discharge state.

[0111] Battery temperature is a crucial factor affecting battery aging. A suitable operating temperature can slow down battery aging and maximize battery performance. Therefore, it is necessary to monitor battery temperature in real time to ensure that the battery maintains a suitable operating temperature.

[0112] The state of charge (SOC) of a battery is a physical quantity that reflects the remaining capacity of the battery. It represents the ratio of the remaining capacity of the battery after a period of use or long-term storage to its capacity when fully charged.

[0113] The State of Health (SOH) of a battery is a quality factor comparing the battery to its ideal state. Typically, the SOH decreases with increased usage time and number of charge / discharge cycles. It is usually determined by variations in electrical parameters such as internal resistance, capacity, voltage, self-discharge rate, charging capability, and the number of charge / discharge cycles.

[0114] It should be understood that the status information of the energy storage unit 201 described above is merely an exemplary example and does not constitute a limitation on this application. The status information of the energy storage unit 201 in the embodiments of this application may include any of the status information described above, but is not limited to the status information described above.

[0115] The temperature, voltage, state of charge (SOC), state of health (SOH), and charge / discharge status of the energy storage unit 201 are all state information related to the working state of the energy storage unit 201. Obtaining this state information of the energy storage unit 201 allows us to understand the real-time working conditions of the energy storage unit 201.

[0116] Optionally, in this embodiment of the application, the domain controller 203 is used to: determine the intelligent management strategy of the non-energy storage unit 202 based on the status information of the energy storage unit 201.

[0117] The domain controller 203 determines the intelligent management strategy of the non-energy storage unit 202 based on the status information of the energy storage unit 201. Without the need for information interaction and data calculation through other processing units, the domain controller 203 can determine the intelligent management strategy of the non-energy storage unit 202 on its own, reducing information interaction and saving system resources.

[0118] It should be understood that after obtaining the status information of the energy storage unit 201, the domain controller 203 can determine the intelligent management strategy for the non-energy storage unit 202 based on the status information; alternatively, after obtaining the status information of the energy storage unit 201, the domain controller 203 can send the status information to other processing units, which can then determine the intelligent management strategy for the non-energy storage unit 202 based on the status information and send the intelligent management strategy to the domain controller 203.

[0119] Optionally, in this embodiment, the domain controller 203 is used to: obtain the intelligent management strategy of the non-energy storage unit 202 from the energy storage cloud server based on the status information of the energy storage unit 201.

[0120] Energy storage cloud servers are simple, efficient, secure, reliable, and have elastically scalable processing capabilities. They can store large amounts of information and facilitate information exchange between energy storage systems, improving system management efficiency.

[0121] Optionally, in this embodiment, the domain controller 203 is used to: acquire the status information of the energy storage unit 201 and send the status information to the energy storage cloud server; and receive the intelligent management strategy sent by the energy storage cloud server.

[0122] Domain controller 203 obtains the intelligent management strategy of non-energy storage unit 202 through energy storage cloud server, which is simple, efficient, safe and reliable, and improves the management efficiency of the system.

[0123] It should be understood that the energy storage cloud server can determine the intelligent management strategy of non-energy storage unit 202 by analyzing the status information once; after receiving the status information of energy storage unit 201, it can first perform a preliminary analysis to determine whether the user behavior data has the application characteristics corresponding to the intelligent management strategy, and then proceed with subsequent steps to determine the intelligent management strategy of non-energy storage unit 202.

[0124] Optionally, in this embodiment, the domain controller 203 is configured to: acquire first status information of the energy storage unit 201 and send the first status information to the energy storage cloud server; receive a first instruction sent by the energy storage cloud server, acquire second status information of the energy storage unit 201 according to the first instruction, and send the second status information to the energy storage cloud server, wherein the second status information includes more information than the first status information, and the second status information is used by the energy storage cloud server to determine the intelligent management strategy; and receive the intelligent management strategy sent by the energy storage cloud server.

[0125] Domain controller 203 obtains the first status information of energy storage unit 201 and sends it to the energy storage cloud server. Then, according to the first instruction sent by the energy storage cloud server, it obtains the second status information of energy storage unit 201 and sends it to the energy storage cloud server. By obtaining the first and second status information, the energy storage cloud server finally determines the intelligent management strategy of non-energy storage unit 202. Domain controller 203 obtains the intelligent management strategy from the energy storage cloud server and manages non-energy storage unit 202 according to the intelligent management strategy, so that non-energy storage unit 202 adjusts the working conditions of energy storage unit 201 to the required working conditions.

[0126] Optionally, in this embodiment of the application, the intelligent management strategy includes: before the energy storage unit 201 starts working mode, turning on the non-energy storage unit 202 to adjust the working conditions of the energy storage unit 201 so that the energy storage unit 201 is in a preset working condition when starting working mode.

[0127] The preset operating conditions described here refer to the optimal or superior operating conditions of the energy storage unit 201, determined based on its historical operating states. These preset operating conditions can be adjusted according to different states of the energy storage unit 201.

[0128] Before the energy storage unit 201 starts working, the non-energy storage unit 202 adjusts the working conditions of the energy storage unit 201 so that the energy storage unit 201 is in the preset working conditions when starting working. In this way, the energy storage unit 201 can be in the appropriate working conditions when it starts working, thereby improving the working efficiency of the energy storage unit 201.

[0129] It should be understood that the above-described intelligent management strategy is merely an exemplary example and does not constitute a limitation of this application. The intelligent management strategy in the embodiments of this application may include, but is not limited to, the above-described intelligent management strategy. For example, the intelligent management strategy in the embodiments of this application may also include shutting down the non-energy storage unit 202 when the energy storage unit 201 stops working, in order to save power consumption. In addition, during the operation of the energy storage unit 201, the status information of the energy storage unit 201 can be monitored in real time, and the intelligent management strategy of the non-energy storage unit 202 can be adjusted in a timely manner according to the status information, so as to achieve efficient energy-saving management of the energy storage system 200.

[0130] This application also provides an energy storage system 300, such as Figure 3 As shown, the energy storage system 300 includes an energy storage unit 301, a non-energy storage unit 302, and a domain controller 303.

[0131] Non-energy storage unit 302 is used to assist energy storage unit 301; for example, it adjusts the operating temperature of energy storage unit 301 according to its operating state to keep it at a suitable operating temperature. Non-energy storage unit 302 may include, for example, a thermal management unit or a fire suppression unit. The thermal management unit can cool down the battery pack of energy storage unit 301 when the temperature is too high, and can heat up the battery pack when it needs to be heated to increase the charging and discharging rate. The fire suppression system can extinguish fires when thermal runaway occurs in the battery energy storage system.

[0132] Domain controller 303 integrates the management module of energy storage unit 301 and the management module of non-energy storage unit 302, and is used to manage energy storage unit 301 and non-energy storage unit 302.

[0133] In this embodiment, the management module of energy storage unit 301 and the management module of non-energy storage unit 302 are integrated into domain controller 303. Compared with the existing scheme where the management modules of energy storage unit 301 and non-energy storage unit 302 are set up separately in energy storage system 300, the solution of integrating the management modules of energy storage unit 301 and non-energy storage unit 302 into domain controller 303 can centrally control the management modules of energy storage unit 301 and non-energy storage unit 302 through domain controller 303. This enables smooth and rapid information interaction between the management modules of energy storage unit 301 and non-energy storage unit 302, improves system management efficiency, and allows for integrated processing of information from the management modules of energy storage unit 301 and non-energy storage unit 302, avoiding the waste of system resources caused by multiple information processing.

[0134] Optionally, in this embodiment of the application, the management module of the energy storage unit 301 includes at least one of the battery management system (BMS), power conversion system (PCS), and energy management system (EMS).

[0135] A Battery Management System (BMS) monitors battery information such as State of Charge (SOC), temperature, and current, and interacts with the Power Conversion System (PCS) or Energy Management System (EMS) to manage and control the entire battery energy storage system. For example, the BMS estimates the SOC of each battery to ensure it remains within a reasonable range, preventing damage from overcharging or over-discharging. During charging and discharging, the BMS collects real-time data on the terminal voltage and temperature of each battery cell, the charging and discharging current, and the total voltage of the battery pack to prevent overcharging or over-discharging, thereby extending battery life.

[0136] It should be understood that the management module of the energy storage unit 301 described above is merely an exemplary example and does not constitute a limitation on this application. The management module of the energy storage unit 301 in the embodiments of this application may include any of the management modules described above, but is not limited to the management modules described above.

[0137] Optionally, in this embodiment, the management module of the energy storage unit 301 includes multiple control nodes. The domain controller 303 can also integrate the multiple control nodes of the management module of the energy storage unit 301. For example, it can integrate the control module, display module, and wireless communication module of the battery management system (BMS), and integrate the information reception, information processing, and information transmission of the BMS into one, thereby improving the speed of information interaction, improving the efficiency of information processing, and avoiding multi-layer information dispersion transmission, thus saving system resources.

[0138] Domain controller 303 integrates multiple control nodes of the management module of energy storage unit 301, which can improve the integration of the management module of energy storage unit 301 and reduce hardware costs.

[0139] Optionally, in this embodiment, the thermal management unit integrates the thermal management unit of the energy storage unit 301 and the thermal management unit of the power conversion system (PCS). Thus, when the temperature of the PCS is too high, the PCS's thermal management unit can transfer heat from the PCS to the battery's thermal management unit; simultaneously, the battery's heat can also be transferred from the battery's thermal management unit to the PCS's thermal management unit. Because the battery's thermal management unit and the PCS's thermal management unit are integrated, the energy transfer between them is centrally controlled by the domain controller 303, ensuring timely and rapid energy transfer between them.

[0140] The thermal management unit of the energy storage unit 301 and the thermal management unit of the PCS are integrated together, and energy can be converted between the two thermal management units to improve the system energy utilization rate.

[0141] Optionally, in this embodiment, the domain controller 303 is used to manage the non-energy storage unit 302 based on the status information of the energy storage unit 301.

[0142] The domain controller 303 manages the non-energy storage unit 302 according to the status information of the energy storage unit 301, so that the non-energy storage unit 302 adjusts the operating conditions of the energy storage unit 301 to the required operating conditions.

[0143] Furthermore, in this embodiment, the domain controller 303 can obtain the intelligent management strategy of the non-energy storage unit 302 based on the status information of the energy storage unit 301, and manage the non-energy storage unit 302 according to the intelligent management strategy.

[0144] Domain controller 303 obtains the intelligent management strategy of non-energy storage unit 302 based on the status information of energy storage unit 301. In this way, the management strategy of non-energy storage unit 302 can be flexibly adjusted according to the status information of energy storage unit 301, and non-energy storage unit 302 can be managed according to the intelligent management strategy so that non-energy storage unit 302 can adjust the working conditions of energy storage unit 301 to the required working conditions.

[0145] Optionally, in this embodiment, the intelligent management strategy is a management strategy associated with the user behavior of the energy storage unit 301.

[0146] The intelligent management strategy is linked to the user behavior of the energy storage unit 301, which can efficiently manage the non-energy storage unit 302, enabling the non-energy storage unit 302 to adjust the operating conditions of the energy storage unit 301 to the required operating conditions.

[0147] Optionally, in this embodiment of the application, the state information of the energy storage unit 301 includes at least one of temperature, voltage, state of charge (SOC), state of health (SOH), and charge / discharge state.

[0148] Battery temperature is a crucial factor affecting battery aging. A suitable operating temperature can slow down battery aging and maximize battery performance. Therefore, it is necessary to monitor battery temperature in real time to ensure that the battery maintains a suitable operating temperature.

[0149] The state of charge (SOC) of a battery is a physical quantity that reflects the remaining capacity of the battery. It represents the ratio of the remaining capacity of the battery after a period of use or long-term storage to its capacity when fully charged.

[0150] The State of Health (SOH) of a battery is a quality factor comparing the battery to its ideal state. Typically, the SOH decreases with increased usage time and number of charge / discharge cycles. It is usually determined by variations in electrical parameters such as internal resistance, capacity, voltage, self-discharge rate, charging capability, and the number of charge / discharge cycles.

[0151] It should be understood that the status information of the energy storage unit 301 described above is merely an exemplary example and does not constitute a limitation on this application. The status information of the energy storage unit 301 in the embodiments of this application may include any of the status information described above, but is not limited to the status information described above.

[0152] The temperature, voltage, state of charge (SOC), state of health (SOH), and charge / discharge status of the energy storage unit 301 are all state information related to the working state of the energy storage unit 301. Obtaining this state information of the energy storage unit 301 allows us to understand the real-time working conditions of the energy storage unit 301.

[0153] Optionally, in this embodiment, the domain controller 303 is used to: determine the intelligent management strategy of the non-energy storage unit 302 based on the status information of the energy storage unit 301.

[0154] The domain controller 303 determines the intelligent management strategy of the non-energy storage unit 302 based on the status information of the energy storage unit 301. Without the need for information interaction and data calculation through other processing units, the domain controller 303 can determine the intelligent management strategy of the non-energy storage unit 302 on its own, reducing information interaction and saving system resources.

[0155] It should be understood that after obtaining the status information of the energy storage unit 301, the domain controller 303 can determine the intelligent management strategy for the non-energy storage unit 302 based on the status information; alternatively, after obtaining the status information of the energy storage unit 301, the domain controller 303 can send the status information to other processing units, which can then determine the intelligent management strategy for the non-energy storage unit 302 based on the status information and send the intelligent management strategy to the domain controller 303.

[0156] Optionally, in this embodiment of the application, the energy storage system 300 further includes an energy storage cloud server 304, and the domain controller 303 is used to: obtain the intelligent management strategy of the non-energy storage unit 302 from the energy storage cloud server 304 according to the status information of the energy storage unit 301.

[0157] The energy storage cloud server 304 is simple, efficient, safe, reliable, and has elastically scalable processing capabilities. It can store a large amount of information and facilitate information exchange between the energy storage system 300 and the energy storage cloud server 304, which is efficient and rapid, thus improving the system's management efficiency.

[0158] Optionally, in this embodiment, the domain controller 303 is used to: obtain the status information of the energy storage unit 301 and send the status information to the energy storage cloud server 304; the energy storage cloud server 304 is used to: determine the intelligent management strategy based on the status information and send the intelligent management strategy to the domain controller 303.

[0159] Domain controller 303 obtains the intelligent management strategy of non-energy storage unit 302 through energy storage cloud server 304, which is simple, efficient, safe and reliable, and improves the management efficiency of the system.

[0160] It should be understood that the energy storage cloud server 304 can determine the intelligent management strategy of the non-energy storage unit 302 by analyzing the status information once; after receiving the status information of the energy storage unit 301, it can first perform a preliminary analysis to determine whether the user behavior data has the application characteristics corresponding to the intelligent management strategy, and then proceed with subsequent steps to determine the intelligent management strategy of the non-energy storage unit 302.

[0161] Optionally, in this embodiment of the application, the energy storage cloud server 304 is used to: extract first user behavior data of the energy storage unit 301 based on status information; and determine the intelligent management strategy corresponding to the first user behavior data based on the first user behavior data.

[0162] The energy storage cloud server 304 extracts the first user behavior data of the energy storage unit 301 based on the status information and determines the intelligent management strategy corresponding to the first user behavior data. In this way, the management strategy of the non-energy storage unit 302 can be flexibly adjusted according to the status information of the energy storage unit 301.

[0163] Optionally, in this embodiment, the domain controller 303 is configured to: acquire first status information of the energy storage unit 301 and send the first status information to the energy storage cloud server 304; the energy storage cloud server 304 is configured to: send a first instruction to the domain controller 303 according to the first status information, the first instruction being used to instruct the domain controller 303 to send second status information of the energy storage unit 301, wherein the second status information includes more information than the first status information; the domain controller 303 is further configured to: acquire the second status information of the energy storage unit 301 according to the first instruction and send the second status information to the energy storage cloud server 304; the energy storage cloud server 304 is further configured to: determine an intelligent management strategy according to the second status information and send the intelligent management strategy to the domain controller 303.

[0164] Domain controller 303 obtains the first status information of energy storage unit 301 and sends it to energy storage cloud server 304. Then, according to the first instruction sent by energy storage cloud server 304, it obtains the second status information of energy storage unit 301 and sends it to energy storage cloud server 304. Energy storage cloud server 304 determines the intelligent management strategy of non-energy storage unit 302 by obtaining the first and second status information. Domain controller 303 obtains the intelligent management strategy from energy storage cloud server 304 and manages non-energy storage unit 302 according to the intelligent management strategy so that non-energy storage unit 302 adjusts the working conditions of energy storage unit 301 to the required working conditions.

[0165] Optionally, in this embodiment of the application, the energy storage cloud server 304 is used to: extract second user behavior data of the energy storage unit 301 based on the first status information; and send the first instruction to the domain controller 303 when it is determined that the second user behavior data has application characteristics corresponding to the intelligent management strategy.

[0166] The energy storage cloud server 304 first extracts the second user behavior data of the energy storage unit 301 based on the first status information. If it is determined that the second user behavior data has the application characteristics corresponding to the intelligent management strategy, it then sends a first instruction to the domain controller 303, instructing the domain controller 303 to send the second status information of the energy storage unit 301. The second status information includes more information than the first status information. Therefore, the energy storage cloud server 304 can determine the intelligent management strategy of the non-energy storage unit 302 based on the second status information, and manage the non-energy storage unit 302 according to the intelligent management strategy, so that the non-energy storage unit 302 adjusts the working conditions of the energy storage unit 301 to the required working conditions.

[0167] Optionally, in this embodiment of the application, the intelligent management strategy includes: before the energy storage unit 301 starts working mode, the non-energy storage unit 302 is activated to adjust the working conditions of the energy storage unit 301 so that the energy storage unit 301 is in a preset working condition when starting working mode.

[0168] The preset operating conditions described here refer to the optimal or superior operating conditions of the energy storage unit 301, determined based on its historical operating states. These preset operating conditions can be adjusted according to different states of the energy storage unit 301.

[0169] Before the energy storage unit 301 starts working, the non-energy storage unit 302 adjusts the working conditions of the energy storage unit 301 so that the energy storage unit 301 is in the preset working conditions when starting working. In this way, the energy storage unit 301 can be in the appropriate working conditions when it starts working, thereby improving the working efficiency of the energy storage unit 301.

[0170] It should be understood that the above-described intelligent management strategy is merely an exemplary example and does not constitute a limitation of this application. The intelligent management strategy in the embodiments of this application may include, but is not limited to, the above-described intelligent management strategy. For example, the intelligent management strategy in the embodiments of this application may also include shutting down the non-energy storage unit 302 when the energy storage unit 301 stops working, in order to save power consumption. In addition, during the operation of the energy storage unit 301, the status information of the energy storage unit 301 can be monitored in real time, and the intelligent management strategy of the non-energy storage unit 302 can be adjusted in a timely manner according to the status information, so as to achieve efficient energy-saving management of the energy storage system 300.

[0171] It should be understood that in this embodiment, the domain controller 303 obtains the intelligent management strategy of the non-energy storage unit 302 based on the status information of the energy storage unit 301, and manages the non-energy storage unit 302 according to the intelligent management strategy, so that the non-energy storage unit 302 can flexibly and efficiently assist the energy storage unit 301, so that the energy storage unit 301 is in a suitable working condition. That is, based on the status information of the energy storage unit 301, the strategy of the non-energy storage unit 302 assisting the energy storage unit 301 to achieve a suitable working condition is flexibly adjusted to avoid unnecessary energy waste and realize the efficient energy-saving management of the energy storage system 300.

[0172] The energy storage system of the present application embodiment has been described above. The control method of the energy storage system of the present application embodiment is described below. For the parts not described in detail, please refer to the foregoing embodiments.

[0173] Figure 4 A schematic flowchart of a control method for an energy storage system disclosed in an embodiment of this application is shown.

[0174] 401, Domain controllers manage energy storage units and non-energy storage units.

[0175] Optionally, in this embodiment, the domain controller can manage non-energy storage units based on the status information of the energy storage units. The status information of the energy storage units may include at least one of temperature, voltage, state of charge (SOC), state of health (SOH), and charge / discharge status. The temperature, voltage, SOC, SOH, and charge / discharge status of the energy storage units are all status information related to the operating state of the energy storage units. Obtaining this status information allows for understanding the real-time operating conditions of the energy storage units.

[0176] Figure 5 This is a schematic flowchart of a control method for an energy storage system disclosed in another embodiment of this application.

[0177] 501, The domain controller obtains the intelligent management strategy for non-energy storage units based on the status information of the energy storage units.

[0178] 502. The domain controller manages non-energy storage units according to intelligent management strategies.

[0179] Optionally, in this embodiment of the application, after obtaining the status information of the energy storage unit, the domain controller can determine the intelligent management strategy for the non-energy storage unit based on the status information.

[0180] Optionally, in this embodiment, the energy storage system further includes an energy storage cloud server. After obtaining the status information of the energy storage unit, the domain controller sends the status information to the energy storage cloud server. The energy storage cloud server then determines the intelligent management strategy for the non-energy storage units based on the status information and sends the intelligent management strategy to the domain controller. (See reference...) Figure 6 , Figure 6 This is a schematic flowchart of a control method for an energy storage system disclosed in an embodiment of this application.

[0181] 601. The domain controller obtains the status information of the energy storage unit and sends the status information to the energy storage cloud server.

[0182] 602, The energy storage cloud server extracts the first user behavior data of the energy storage unit based on the status information.

[0183] 603. The energy storage cloud server determines the intelligent management policy corresponding to the first user's usage behavior data based on the first user's usage behavior data, and sends the intelligent management policy to the domain controller.

[0184] In the above control method, after receiving the status information of the energy storage unit, the energy storage cloud server can extract the first user's usage behavior data of the energy storage unit and determine the intelligent management strategy corresponding to the first user's usage behavior data. In other words, the energy storage cloud server only needs to analyze the status information once to determine the intelligent management strategy for non-energy storage units.

[0185] Optionally, in one embodiment of this application, after receiving the status information of the energy storage unit, the energy storage cloud server can first perform preliminary analysis to determine whether the user behavior data has application characteristics corresponding to the intelligent management strategy, and then proceed with subsequent steps to determine the intelligent management strategy for non-energy storage units. (See reference...) Figure 7 , Figure 7 This is a schematic flowchart of a control method for an energy storage system disclosed in an embodiment of this application.

[0186] 701. The domain controller obtains the first status information of the energy storage unit and sends the first status information to the energy storage cloud server.

[0187] 702, The energy storage cloud server extracts the second user behavior data of the energy storage unit based on the first status information.

[0188] 703, the energy storage cloud server determines whether the second user's behavior data has the application characteristics corresponding to the intelligent management strategy.

[0189] 704. When the second user's behavior data has application characteristics corresponding to the intelligent management strategy, the energy storage cloud server sends the first instruction to the domain controller.

[0190] 705. The domain controller obtains the second status information of the energy storage unit according to the first instruction and sends the second status information to the energy storage cloud server.

[0191] 706. The energy storage cloud server determines the intelligent management strategy based on the second state information and sends the intelligent management strategy to the domain controller.

[0192] The domain controller obtains the first status information of the energy storage unit and sends it to the energy storage cloud server. Then, according to the first instruction sent by the energy storage cloud server, it obtains the second status information of the energy storage unit and sends it to the energy storage cloud server. The energy storage cloud server obtains the first and second status information and finally determines the intelligent management strategy for the non-energy storage unit. The domain controller obtains the intelligent management strategy from the energy storage cloud server and manages the non-energy storage unit according to the intelligent management strategy so that the non-energy storage unit adjusts the working conditions of the energy storage unit to the required working conditions.

[0193] The control method of the energy storage system provided in this application embodiment is described below with reference to specific application scenarios of battery energy storage systems. Figure 8 As shown, the thermal management of peak shaving and valley filling in the power distribution network is illustrated as an example.

[0194] 801, the domain controller packages and compresses status information such as battery pack temperature and charging / discharging status, and uploads the compressed current status information to the energy storage cloud server.

[0195] Specifically, the domain controller can use wireless communication templates, such as 3G / 4G / 5G / ETH, to upload the battery pack's status information to the energy storage cloud server.

[0196] 802. The energy storage cloud server calculates and compares the status information over a period of time based on the current status information, and initially extracts user behavior data.

[0197] 803, determine whether user behavior data has temporal and spatial regularity, compare from the time and spatial dimensions, and determine whether the energy storage cloud server has peak shaving and valley filling application characteristics.

[0198] 804. When it is determined that the energy storage cloud server has peak shaving and valley filling application characteristics, the domain controller is required to send more detailed status information of the energy storage units and compare it with the template status information or historical status information.

[0199] 805. The energy storage cloud server determines whether a peak shaving and valley filling application is involved based on more detailed status information of the energy storage units.

[0200] 806. After determining that it belongs to the peak shaving and valley filling application, the energy storage cloud server schedules the peak shaving and valley filling application APP and sends it to the domain controller.

[0201] Specifically, the energy storage cloud server can use wireless communication templates, such as 3G / 4G / 5G / ETH, to distribute peak shaving and valley filling applications to the domain controller.

[0202] 807, the domain controller application uses a peak shaving and valley filling application APP to optimize and upgrade the thermal management strategy of peak shaving and valley filling.

[0203] In the aforementioned method for optimizing thermal management strategies for peak shaving and valley filling applications, the energy storage cloud server can determine the application characteristics and whether it falls under peak shaving and valley filling based on the battery pack's status information. Simultaneously, the domain controller can also determine the application characteristics and whether it falls under peak shaving and valley filling based on the battery pack's status information. Combining the judgments of the energy storage cloud server and the domain controller, the application characteristics of the battery pack and whether it falls under peak shaving and valley filling applications are determined.

[0204] The following example illustrates the specific thermal management strategy for this peak shaving and valley filling application. For instance, if the battery pack starts charging around 8:00 AM each day, the domain controller will activate the battery pack's thermal management unit before 8:00 AM to ensure that the battery pack's temperature is adjusted to the optimal charging range around 8:00 AM, guaranteeing that it can charge until approximately 3:30 PM. Simultaneously, during the charging process, based on the battery pack's temperature change rate, the battery pack's temperature window will be adjusted to the optimal range around 3:30 PM to ensure discharge capability between 3:30 PM and 8:00 PM. After discharge is complete, the battery pack's thermal management unit will be turned off until it is turned on again before 8:00 AM the next day.

[0205] In addition, during the peak shaving and valley filling application process, the domain controller will still monitor and upload the battery pack status information to the energy storage cloud server in real time, and determine whether to continue to execute the peak shaving and valley filling application in the next time period, so as to continuously update the thermal management strategy of the thermal management unit and realize the intelligent adjustment of the energy storage system.

[0206] This application embodiment also provides a control device 900 for an energy storage system, such as... Figure 9 As shown, the control device 900 includes a processor 901 and a memory 902, wherein the memory 902 is used to store computer programs, and the processor 901 is used to call the computer programs to enable the device to implement the methods of the various embodiments of the present application described above.

[0207] This application also provides a readable storage medium for storing a computer program, which, when executed by a computing device, causes the computing device to implement the methods described in the various embodiments of this application.

[0208] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A domain controller for an energy storage system, characterized in that, The energy storage system includes an energy storage unit and a non-energy storage unit, wherein the non-energy storage unit is used to assist the energy storage unit. The domain controller integrates the management module of the energy storage unit and the management module of the non-energy storage unit, and is used to manage the energy storage unit and the non-energy storage unit; The domain controller is configured to: obtain the intelligent management strategy for the non-energy storage unit based on the status information of the energy storage unit; and manage the non-energy storage unit according to the intelligent management strategy. The intelligent management strategy includes: before the energy storage unit starts its working mode, the non-energy storage unit is activated to adjust the working conditions of the energy storage unit so that the energy storage unit is in a preset working condition when the working mode is started.

2. The domain controller according to claim 1, characterized in that, The management module of the energy storage unit includes at least one of a battery management system (BMS), a power conversion system (PCS), and an energy management system (EMS).

3. The domain controller according to claim 1 or 2, characterized in that, The management module of the energy storage unit includes multiple control nodes, and the domain controller integrates the multiple control nodes.

4. The domain controller according to any one of claims 1 to 3, characterized in that, The non-energy storage unit includes a thermal management unit or a fire protection unit.

5. The domain controller according to claim 4, characterized in that, The thermal management unit integrates the thermal management unit of the energy storage unit and the thermal management unit of the PCS.

6. The domain controller according to any one of claims 1 to 5, characterized in that, The domain controller is used for: The non-energy storage units are managed based on the status information of the energy storage units.

7. The domain controller according to claim 6, characterized in that, The state information of the energy storage unit includes at least one of the following: temperature, voltage, state of charge (SOC), state of health (SOH), and charge / discharge state.

8. The domain controller according to claim 1, characterized in that, The intelligent management strategy is a management strategy associated with the user behavior of the energy storage unit.

9. The domain controller according to claim 1 or 8, characterized in that, The domain controller is used for: The intelligent management strategy for the non-energy storage unit is obtained from the energy storage cloud server based on the status information of the energy storage unit.

10. The domain controller according to claim 9, characterized in that, The domain controller is used for: Obtain the status information of the energy storage unit and send the status information to the energy storage cloud server; Receive the intelligent management strategy sent by the energy storage cloud server.

11. The domain controller according to claim 9, characterized in that, The domain controller is used for: Obtain the first status information of the energy storage unit and send the first status information to the energy storage cloud server; The system receives a first instruction from the energy storage cloud server, obtains the second status information of the energy storage unit according to the first instruction, and sends the second status information to the energy storage cloud server. The second status information includes more information than the first status information. The second status information is used by the energy storage cloud server to determine the intelligent management strategy. Receive the intelligent management strategy sent by the energy storage cloud server.

12. The domain controller according to claim 1 or 8, characterized in that, The domain controller is used for: The intelligent management strategy for the non-energy storage unit is determined based on the status information of the energy storage unit.

13. An energy storage system, characterized in that, include: Energy storage unit; A non-energy storage unit, which is used to assist the energy storage unit; and A domain controller, which integrates the management module of the energy storage unit and the management module of the non-energy storage unit, for managing the energy storage unit and the non-energy storage unit; The domain controller is configured to: obtain the intelligent management strategy for the non-energy storage unit based on the status information of the energy storage unit; and manage the non-energy storage unit according to the intelligent management strategy. The intelligent management strategy includes: before the energy storage unit starts its working mode, the non-energy storage unit is activated to adjust the working conditions of the energy storage unit so that the energy storage unit is in a preset working condition when the working mode is started.

14. The energy storage system according to claim 13, characterized in that, The management module of the energy storage unit includes at least one of a battery management system (BMS), a power conversion system (PCS), and an energy management system (EMS).

15. The energy storage system according to claim 13 or 14, characterized in that, The management module of the energy storage unit includes multiple control nodes, and the domain controller integrates the multiple control nodes.

16. The energy storage system according to claim 14 or 15, characterized in that, The non-energy storage unit includes a thermal management unit or a fire protection unit.

17. The energy storage system according to claim 16, characterized in that, The thermal management unit integrates the thermal management unit of the energy storage unit and the thermal management unit of the PCS.

18. The energy storage system according to any one of claims 13 to 17, characterized in that, The domain controller is used for: The non-energy storage units are managed based on the status information of the energy storage units.

19. The energy storage system according to claim 18, characterized in that, The state information of the energy storage unit includes at least one of the following: temperature, voltage, state of charge (SOC), state of health (SOH), and charge / discharge state.

20. The energy storage system according to claim 13, characterized in that, The intelligent management strategy is a management strategy associated with the user behavior of the energy storage unit.

21. The energy storage system according to claim 13 or 20, characterized in that, The energy storage system also includes an energy storage cloud server, and the domain controller is used for: The intelligent management strategy for the non-energy storage unit is obtained from the energy storage cloud server based on the status information of the energy storage unit.

22. The energy storage system according to claim 21, characterized in that, The domain controller is used to: acquire the status information of the energy storage unit and send the status information to the energy storage cloud server; The energy storage cloud server is used to: determine the intelligent management strategy based on the status information, and send the intelligent management strategy to the domain controller.

23. The energy storage system according to claim 22, characterized in that, The energy storage cloud server is used for: Extract the first user behavior data of the energy storage unit based on the status information; Based on the first user behavior data, determine the intelligent management strategy corresponding to the first user behavior data.

24. The energy storage system according to claim 21, characterized in that, The domain controller is used to: acquire first status information of the energy storage unit and send the first status information to the energy storage cloud server; The energy storage cloud server is used to: send a first instruction to the domain controller according to the first status information, wherein the first instruction is used to instruct the domain controller to send the second status information of the energy storage unit, wherein the second status information includes more information than the first status information; The domain controller is further configured to: obtain the second status information of the energy storage unit according to the first instruction, and send the second status information to the energy storage cloud server; The energy storage cloud server is also used to: determine the intelligent management strategy based on the second status information, and send the intelligent management strategy to the domain controller.

25. The energy storage system according to claim 24, characterized in that, The energy storage cloud server is used for: Extract the second user behavior data of the energy storage unit based on the first status information; If it is determined that the second user behavior data has application characteristics corresponding to the intelligent management strategy, the first instruction is sent to the domain controller.

26. The energy storage system according to claim 13 or 20, characterized in that, The domain controller is used for: The intelligent management strategy for the non-energy storage unit is determined based on the status information of the energy storage unit.

27. A control method for an energy storage system, characterized in that, The energy storage system includes an energy storage unit, a non-energy storage unit, and a domain controller. The non-energy storage unit is used to assist the energy storage unit, and the domain controller integrates the management module of the energy storage unit and the management module of the non-energy storage unit. The method includes: The domain controller manages the energy storage unit and the non-energy storage unit; The domain controller manages the energy storage unit and the non-energy storage unit, including: the domain controller obtaining the intelligent management strategy of the non-energy storage unit based on the status information of the energy storage unit; and the domain controller managing the non-energy storage unit according to the intelligent management strategy. The intelligent management strategy includes: before the energy storage unit starts its working mode, the non-energy storage unit is activated to adjust the working conditions of the energy storage unit so that the energy storage unit is in a preset working condition when the working mode is started.

28. The control method according to claim 27, characterized in that, The management module of the energy storage unit includes at least one of a battery management system (BMS), a power conversion system (PCS), and an energy management system (EMS).

29. The control method according to claim 27 or 28, characterized in that, The management module of the energy storage unit includes multiple control nodes, and the domain controller integrates the multiple control nodes.

30. The control method according to any one of claims 27 to 29, characterized in that, The non-energy storage unit includes a thermal management unit or a fire protection unit.

31. The control method according to claim 30, characterized in that, The thermal management unit integrates the thermal management unit of the energy storage unit and the thermal management unit of the PCS.

32. The control method according to any one of claims 27 to 31, characterized in that, The domain controller manages the energy storage unit and the non-energy storage unit, including: The domain controller manages the non-energy storage units based on the status information of the energy storage units.

33. The control method according to claim 32, characterized in that, The state information of the energy storage unit includes at least one of the following: temperature, voltage, state of charge (SOC), state of health (SOH), and charge / discharge state.

34. The control method according to claim 27, characterized in that, The intelligent management strategy is a management strategy associated with the user behavior of the energy storage unit.

35. The control method according to claim 27 or 34, characterized in that, The energy storage system also includes an energy storage cloud server. The domain controller obtains the intelligent management strategy for the non-energy storage units based on the status information of the energy storage units, including: The domain controller obtains the intelligent management strategy for the non-energy storage unit from the energy storage cloud server based on the status information of the energy storage unit.

36. The control method according to claim 35, characterized in that, The domain controller obtains the intelligent management strategy for the non-energy storage units from the energy storage cloud server based on the status information of the energy storage units, including: The domain controller acquires the status information of the energy storage unit and sends the status information to the energy storage cloud server, so that the energy storage cloud server determines the intelligent management strategy based on the status information and sends the intelligent management strategy to the domain controller.

37. The control method according to claim 36, characterized in that, The energy storage cloud server determines the intelligent management strategy based on the status information, including: The energy storage cloud server extracts the first user usage behavior data of the energy storage unit based on the status information, and determines the intelligent management strategy corresponding to the first user usage behavior data based on the first user usage behavior data.

38. The control method according to claim 35, characterized in that, The domain controller obtains the intelligent management strategy for the non-energy storage units from the energy storage cloud server based on the status information of the energy storage units, including: The domain controller acquires the first status information of the energy storage unit and sends the first status information to the energy storage cloud server, so that the energy storage cloud server sends a first instruction to the domain controller according to the first status information. The first instruction is used to instruct the domain controller to send the second status information of the energy storage unit, wherein the second status information includes more information than the first status information. The domain controller obtains the second status information of the energy storage unit according to the first instruction, and sends the second status information to the energy storage cloud server, so that the energy storage cloud server determines the intelligent management strategy according to the second status information and sends the intelligent management strategy to the domain controller.

39. The control method according to claim 38, characterized in that, The energy storage cloud server sends a first instruction to the domain controller based on the first status information, including: The energy storage cloud server extracts the second user behavior data of the energy storage unit based on the first status information. If it is determined that the second user behavior data has the application characteristics corresponding to the intelligent management strategy, the server sends the first instruction to the domain controller.

40. The control method according to claim 27 or 34, characterized in that, The domain controller obtains the intelligent management strategy for the non-energy storage unit based on the status information of the energy storage unit, including: The domain controller determines the intelligent management strategy for the non-energy storage unit based on the status information of the energy storage unit.

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