Synchronously deactivating control method and device for energy storage equipment

Abstract

The present application provides a method and device for synchronously deactivating energy storage devices, including: obtaining historical charge-discharge data of an energy storage system; determining a first mapping relationship and a second mapping relationship according to the historical charge-discharge data; obtaining the initial state of health (SOH) and initial energy of each energy storage device in the current charge-discharge cycle; determining a plurality of target mapping relationships according to the first mapping relationship, the second mapping relationship, and the initial SOH and initial energy of each energy storage device; updating the plurality of target mapping relationships after each charge-discharge cycle, and adjusting the corresponding operating state and target charge-discharge power of each energy storage device in the next charge-discharge cycle according to the latest determined plurality of target mapping relationships and a preset balanced control optimization model, so that after multiple adjustments, multiple energy storage devices simultaneously reach a preset limit SOH, thereby achieving synchronous deactivation. The present application can improve the operating efficiency and operating benefits of the energy storage system.

Description

Technical Field

[0001] This application relates to the field of energy storage device control, and particularly to a method and device for synchronously deactivating energy storage devices. Background Art

[0002] In actual operation, energy storage systems usually adopt a constant power charge-discharge mode. Due to the limitations of transformer capacity and load power, there are fluctuations in the charge-discharge power of energy storage systems. In this case, the power of all energy storage devices is usually synchronously increased or decreased to complete. However, due to the battery consistency problem among multiple energy storage devices, at the end of the life cycle of energy storage devices (usually when the state of health SOH drops to 70% or 60% is regarded as the end of the life of energy storage devices), multiple energy storage devices will face the problem of inconsistent SOH, resulting in the need for energy storage devices to stop using at different times for retirement, which will increase time and economic costs. Moreover, in some projects with minimum power requirements, it will further lead to the inability to fully utilize the economy of energy storage devices and reduce project benefits.

[0003] Existing synchronous deactivation control schemes for energy storage devices usually set the same operating conditions and configuration parameters for multiple energy storage devices, such as setting the same charge-discharge power, the same temperature control, and the same charge-discharge time, etc., to minimize the difference in attenuation rates among multiple energy storage devices. However, in actual applications, it is difficult for multiple energy storage devices to achieve exactly the same operating conditions and configuration parameters. Therefore, the existing schemes cannot optimize control according to the actual operating state of energy storage devices and cannot meet the control requirements for multiple energy storage devices to reach the end of their life cycles simultaneously. Summary of the Invention

[0004] This application provides a method and device for synchronously deactivating energy storage devices. The controller can determine the corresponding relationship between the state of health SOH of each energy storage device and the number of charge-discharge cycles by obtaining the historical charge-discharge data of the energy storage system and the initial state of health SOH and initial energy of each energy storage device in the current charge-discharge cycle. Then, after each charge-discharge cycle, update this corresponding relationship, and adjust the charge-discharge power and operating state of each energy storage device in the next charge-discharge cycle according to the updated corresponding relationship and a preset model, so as to gradually reduce the SOH difference among multiple energy storage devices, and finally achieve that multiple energy storage devices reach the end of their life cycles simultaneously, thereby realizing synchronous deactivation, which is beneficial to improving the stability and operating efficiency of the energy storage system.

[0005] In a first aspect, this application provides a method for synchronously deactivating energy storage devices, which is applied to a controller of an energy storage system. The energy storage system includes multiple energy storage devices, and the method includes:

[0006] Obtain the historical charge-discharge data of the energy storage system;

[0007] Determine a first mapping relationship and a second mapping relationship according to the historical charge and discharge data. The first mapping relationship includes a plurality of first sub-mapping relationships. A single first sub-mapping relationship represents the corresponding relationship between the charge and discharge power of the corresponding energy storage device and time. The second mapping relationship represents the corresponding relationship between the charge and discharge time of the energy storage system and the number of charge and discharge cycles;

[0008] Obtain the initial state of health SOH and initial energy of each energy storage device among a plurality of energy storage devices in the current charge and discharge cycle;

[0009] Determine the target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial state of health SOH and initial energy of each energy storage device in the current charge and discharge cycle, and obtain a plurality of target mapping relationships. The target mapping relationship is used to predict the corresponding relationship between the state of health SOH of the energy storage device and the number of charge and discharge cycles;

[0010] Update the plurality of target mapping relationships after each charge and discharge cycle, and adjust the operating state and target charge and discharge power corresponding to each energy storage device in the next charge and discharge cycle according to the latest determined plurality of target mapping relationships and a preset balanced control optimization model, so that after multiple adjustments, the plurality of energy storage devices simultaneously reach a preset limit state of health SOH, and then achieve synchronous deactivation.

[0011] In a second aspect, the present application provides a control device for synchronous deactivation of energy storage devices, which is applied to a controller of an energy storage system. The energy storage system includes a plurality of the energy storage devices. The device includes:

[0012] A first acquisition unit for acquiring the historical charge and discharge data of the energy storage system;

[0013] A first determination unit for determining a first mapping relationship and a second mapping relationship according to the historical charge and discharge data. The first mapping relationship includes a plurality of first sub-mapping relationships. A single first sub-mapping relationship represents the corresponding relationship between the charge and discharge power of the corresponding energy storage device and time. The second mapping relationship represents the corresponding relationship between the charge and discharge time of the energy storage system and the number of charge and discharge cycles;

[0014] A second acquisition unit for acquiring the initial state of health SOH and initial energy of each energy storage device among a plurality of energy storage devices in the current charge and discharge cycle;

[0015] A second determination unit, configured to determine a target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial state of health (SOH) and initial energy of each energy storage device in the current charge-discharge cycle, so as to obtain a plurality of target mapping relationships, where the target mapping relationship is used to predict the corresponding relationship between the SOH of the energy storage device and the number of charge-discharge cycles;

[0016] A processing unit, configured to update the plurality of target mapping relationships after each charge-discharge cycle, and adjust the operating state and target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle according to the latest determined plurality of target mapping relationships and a preset balanced control optimization model, so that after multiple adjustments, the plurality of energy storage devices simultaneously reach a preset limit SOH, thereby achieving synchronous deactivation.

[0017] In a third aspect, the present application provides an energy storage system, including a controller and a plurality of energy storage devices, where the controller is configured to execute the step instructions in the method according to any one of the first aspect.

[0018] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program / instructions is stored, and the computer program / instructions is executed by a processor to implement the steps of the method described in the first aspect above.

[0019] It can be seen that in the embodiment of the present application, the controller obtains the historical charge-discharge data of the energy storage system; determines the first mapping relationship and the second mapping relationship according to the historical charge-discharge data; obtains the initial SOH and initial energy of each energy storage device in the plurality of energy storage devices in the current charge-discharge cycle; determines the target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial SOH and initial energy of each energy storage device in the current charge-discharge cycle, so as to obtain a plurality of target mapping relationships; updates the plurality of target mapping relationships after each charge-discharge cycle, and adjusts the operating state and target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle according to the latest determined plurality of target mapping relationships and a preset balanced control optimization model, so that after multiple adjustments, the plurality of energy storage devices simultaneously reach a preset limit SOH, thereby achieving synchronous deactivation. Thus, compared with the existing multi-energy storage device synchronous deactivation control scheme that sets the same operating conditions and configuration parameters for multiple energy storage devices, in the present application, optimization control can be performed according to the actual operating state of the energy storage device, which is beneficial to improving the accuracy of multi-energy storage device synchronous deactivation control, as well as improving the operating efficiency and operating revenue of the energy storage system. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0021] Figure 1 is the system architecture diagram of an energy storage system provided by an embodiment of the present application;

[0022] Figure 2 is the step flowchart of a method for synchronously deactivating energy storage devices provided by an embodiment of the present application;

[0023] Figure 3 is the overall flowchart of a method for synchronously deactivating energy storage devices provided by an embodiment of the present application;

[0024] Figure 4 is the block diagram of the functional units of a device for synchronously deactivating energy storage devices provided by an embodiment of the present application;

[0025] Figure 5 is the structural schematic diagram of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0026] To enable those skilled in the art to better understand the solutions of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0027] The terms "first", "second", etc. in the specification and claims of the present application and the above accompanying drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0028] References herein to "embodiments" mean that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0029] The "and / or" in the embodiments of the present application describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone; A and B exist simultaneously; B exists alone. Among them, A and B can be singular or plural.

[0030] In the embodiments of the present application, the symbol " / " can indicate that the associated objects before and after are in an "or" relationship. Additionally, the symbol " / " can also represent a division sign, that is, perform a division operation. For example, A / B can represent A divided by B.

[0031] The "at least one (item)" or its similar expression in the embodiments of the present application refers to any combination of these items, including any combination of a single item (item) or multiple items (items), and refers to one or more, where multiple refers to two or more. For example, at least one (item) of a, b, or c can represent the following seven situations: a, b, c, a and b, a and c, b and c, a, b, and c. Among them, each of a, b, and c can be an element or a set containing one or more elements.

[0032] The "equal to" in the embodiments of the present application can be used in conjunction with "greater than" and is applicable to the technical solutions adopted when it is greater than, or can also be used in conjunction with "less than" and is applicable to the technical solutions adopted when it is less than. When "equal to" is used in conjunction with "greater than", it is not used in conjunction with "less than"; when "equal to" is used in conjunction with "less than", it is not used in conjunction with "greater than".

[0033] Currently, the existing synchronous deactivation control schemes for energy storage devices usually set the same operating conditions and configuration parameters for multiple energy storage devices, such as setting the same charge and discharge power, the same temperature control, and the same charge and discharge time, etc., to minimize the difference in the attenuation rates between multiple energy storage devices. However, in actual applications, it is very difficult for multiple energy storage devices to achieve exactly the same operating conditions and configuration parameters. As a result, the existing schemes cannot perform optimized control based on the actual operating status of the energy storage devices and cannot meet the control requirements for multiple energy storage devices to reach the end of their service life synchronously.

[0034] In view of the above problems, the embodiments of the present application provide a method and device for synchronous deactivation control of energy storage devices, which will be introduced in detail below with reference to the accompanying drawings.

[0035] Please refer toFigure 1 , Figure 1 is a system architecture diagram of an energy storage system provided by an embodiment of the present application. As Figure 1 shown, the energy storage system includes a controller, multiple energy storage devices, and a power grid.

[0036] Among them, the multiple energy storage devices may include a first energy storage device, a second energy storage device, and a tenth energy storage device. The energy storage devices are connected to the controller to facilitate data interaction between the energy storage devices and the controller. It can be understood that the capacity, power, discharge efficiency, number, and type of the energy storage devices in the energy storage system can be set according to actual needs, and specific limitations are not made here. For example, the energy storage device can be an integrated energy storage cabinet or an energy storage container.

[0037] Furthermore, the energy storage devices are connected to the power grid through power interfaces to achieve energy storage and release.

[0038] Among them, the controller can specifically include a controller responsible for data processing on the side of the network platform, which can implement functions such as data transmission and data processing. It can be a physical controller or a controller cluster or distributed system composed of multiple physical controllers. In this embodiment, the number of controllers is not specifically limited. Or, it can also be a cloud controller that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, Content Delivery Network (CDN), and big data and artificial intelligence platforms. It should be understood that when the application client runs on the controller, it can Figure 1 perform data interaction with the

[0039] shown energy storage devices.

[0040] Please refer to Figure 2 , Figure 2 is a step flowchart of a method for synchronously deactivating energy storage devices provided by an embodiment of the present application, which is applied to the controller of the energy storage system. As Figure 2 shown, the method includes the following steps:

[0041] Step S201, obtain the historical charge and discharge data of the energy storage system.

[0042] Among them, the historical charge-discharge data includes, but is not limited to, the historical charge-discharge cycle times, as well as data related to the operation of the energy storage system such as the time stamp, device identifier, charge / discharge power, charge / discharge state, charge / discharge voltage, charge / discharge current, ambient temperature, charge / discharge start / end time, and charge / discharge cycle start / end time of each energy storage device in each historical charge-discharge cycle. The controller obtains the historical charge-discharge data by interacting with the energy storage devices for data.

[0043] Exemplarily, before obtaining the historical charge-discharge data of the energy storage system, the basic parameters of multiple energy storage devices are initialized and defined. For example, assume there are 5 energy storage devices numbered from 1 to 5, with initial energies of 100 kWh, 120 kWh, 90 kWh, 110 kWh, and 130 kWh respectively; efficiencies of 0.9, 0.85, 0.92, 0.88, and 0.95 respectively; initial state of health (SOH) of 90%, 85%, 92%, 88%, and 95% respectively; powers of 50 kW, 40 kW, 60 kW, 45 kW, and 55 kW respectively; the total power of the energy storage system is the sum of the powers of these 5 energy storage devices, which is 250 kW; the power lower limits of each energy storage device are 20 kW, 15 kW, 25 kW, 20 kW, and 22 kW respectively, and the power upper limits are 60 kW, 50 kW, 70 kW, 55 kW, and 65 kW respectively. Through such numbering and parameter definition, it provides a basis for subsequent calculations and controls.

[0044] Step S202, determine a first mapping relationship and a second mapping relationship according to the historical charge-discharge data. The first mapping relationship includes multiple first sub-mapping relationships, and a single first sub-mapping relationship represents the corresponding relationship between the charge-discharge power and time of the corresponding energy storage device. The second mapping relationship represents the corresponding relationship between the charge-discharge time and the charge-discharge cycle times of the energy storage system.

[0045] Among them, the first mapping relationship and the second mapping relationship can be represented by a functional relationship. For example, the first mapping relationship is characterized by a formula including charge-discharge power and time, and the second mapping relationship is characterized by a formula including charge-discharge time and charge-discharge cycle times. In addition, the first mapping relationship and the second mapping relationship can also be characterized by a one-to-one mapping relationship.

[0046] Exemplarily, the charge-discharge powers of each energy storage device in different time periods can be statistically analyzed and plotted as a curve graph, so as to obtain the corresponding relationship between the charge-discharge power and time of the device. Specifically, various methods such as linear regression, polynomial regression, neural network, or other machine learning algorithms can be used for fitting to obtain the corresponding relationship between the charge-discharge power and time of each energy storage device.

[0047] Exemplarily, the number of cycles of each energy storage device at different charge and discharge times can be counted and plotted as a scatter plot to obtain the corresponding relationship between the charge and discharge time and the number of cycles. Specifically, methods such as linear regression and exponential regression can be used for fitting to obtain the corresponding relationship between the charge and discharge time and the number of cycles. For example, through analysis, it is found that in the first 500 cycles, the charge and discharge time of each cycle roughly increases linearly, and as the number of cycles increases, the growth rate gradually slows down, etc. The charge and discharge time within the first charge and discharge cycle can be 5h, including 2h of discharge time and 3h of charge time.

[0048] It can be understood that in this embodiment, according to the relationship between the charge and discharge power and time of the past operation of the energy storage system, a machine learning algorithm is used to predict the usage situation of the energy storage device in the subsequent time, and at the same time, the relationship between the charge and discharge time and the number of cycles can also be predicted. At the same time, to ensure the accuracy of the prediction, multiple charge and discharge cycles, such as 1000 cycles, can be carried out in the energy storage system before starting the prediction, which is beneficial to accurately predicting the operation situation of the energy storage device.

[0049] Step S203: Obtain the initial state of health SOH and initial energy of each energy storage device in each energy storage device in the current charge and discharge cycle.

[0050] Exemplarily, the current power and state of health SOH of each energy storage device are recorded after each charge and discharge cycle. For example, after the end of the 10th cycle, the current energy Q1 of the first energy storage device is 50 kWh, and the current state of health SOH1 is 88%; the current energy Q2 of the second energy storage device is 40 kWh, and the current state of health SOH2 is 82%, and so on. Record the actual discharge situation and current state of health of all energy storage devices. If the current charge and discharge cycle is the 11th charge and discharge cycle, the current energy and current state of health SOH of each energy storage device recorded after the end of the 10th cycle above can be used as the initial energy and initial state of health SOH of the 11th charge and discharge cycle.

[0051] Specifically, the energy storage device can be equipped with an electricity metering device, such as an electricity meter, etc., to obtain the energy of the energy storage device in real time after the end of each charge and discharge cycle or at the beginning of the current charge and discharge cycle, and send it to the controller of the energy storage system through data interaction; in addition, the controller can also calculate the charge energy and discharge energy in each charge and discharge cycle in real time, and obtain the real-time energy and real-time state of health SOH of the energy storage device through a preset model or algorithm.

[0052] Step S204: Determine the target mapping relationship corresponding to each energy storage device based on the first mapping relationship, the second mapping relationship, and the initial state of health (SOH) and initial energy of each energy storage device in the current charge-discharge cycle, to obtain multiple target mapping relationships, where the target mapping relationship is used to predict the corresponding relationship between the SOH of the energy storage device and the number of charge-discharge cycles.

[0053] In a possible embodiment, the charge-discharge power includes charging power and discharging power, and the charge-discharge time includes charging time and discharging time; the determining the target mapping relationship corresponding to each energy storage device based on the first mapping relationship, the second mapping relationship, and the initial SOH and initial energy of each energy storage device in the current charge-discharge cycle to obtain multiple target mapping relationships includes:

[0054] Determine the discharging time corresponding to the current charge-discharge cycle according to the second mapping relationship;

[0055] Perform the following operations for each energy storage device among the multiple energy storage devices to obtain the multiple target mapping relationships:

[0056] Determine the discharging power of the energy storage device in the current charge-discharge cycle according to the first sub-mapping relationship corresponding to the energy storage device; and,

[0057] Determine the discharging energy of the energy storage device in the current charge-discharge cycle according to the discharging power and the discharging time; and,

[0058] Determine the final SOH of the energy storage device in the current charge-discharge cycle according to the discharging energy, the initial SOH of the energy storage device in the current charge-discharge cycle, and the initial energy; and,

[0059] Determine the final SOH of the energy storage device in the next charge-discharge cycle according to the first mapping relationship, the second mapping relationship, the final SOH, and the initial energy in the next charge-discharge cycle, so as to obtain the final SOH of the energy storage device in each charge-discharge cycle;

[0060] Determine the target mapping relationship corresponding to the energy storage device according to the final SOH of the energy storage device in each charge-discharge cycle.

[0061] In a possible embodiment, the discharging time corresponding to the current charge-discharge cycle includes multiple sub-discharging times, each sub-discharging time being a preset duration, and the discharging energy in the current charge-discharge cycle includes the discharging energy within each sub-discharging time; the discharging energy of the energy storage device in the current charge-discharge cycle is calculated by the following formula:

[0062]

[0063] wherein, is the discharge energy of the i-th energy storage device in the m-th charge-discharge cycle, is the discharge time corresponding to the m-th charge-discharge cycle, m is a positive integer, n is the total number of energy storage devices, and j is the number of sub-discharge times included, is the preset duration of the sub-discharge time, is the j-th sub-discharge time, is the discharge power of the i-th energy storage device within the j-th sub-discharge time.

[0064] In a possible embodiment, the final state of health SOH of the energy storage device in the current charge-discharge cycle is determined according to the discharge energy, the initial state of health SOH and the initial energy of the energy storage device in the current charge-discharge cycle, and is calculated by the following formula:

[0065]

[0066] wherein, is the final state of health SOH of the i-th energy storage device in the m-th charge-discharge cycle, is the initial energy of the i-th energy storage device in the m-th charge-discharge cycle, is the initial state of health SOH of the i-th energy storage device in the m-th charge-discharge cycle.

[0067] Among them, when predicting the target mapping relationship between the SOH of the energy storage device and the number of cycles, the power demand of the load for the energy storage device is preferentially guaranteed, and the total power requirement of the energy storage system is used as a constraint condition during prediction. For example, the energy storage system of a community supplies power to devices such as elevators, lighting, and air conditioners in the community. The total power demand of these devices during the peak electricity consumption period is 800 kW. When predicting the functional relationship between the SOH of the energy storage device and the number of cycles, it is necessary to ensure that even if the energy storage device ages with the increase in the number of cycles, it can always provide at least 800 kW of power during the peak electricity consumption period. This is to preferentially guarantee the power demand of the load for the energy storage device, and at the same time, this 800 kW is the total power constraint condition during prediction.

[0068] Exemplarily, if the current charge-discharge cycle is the 10th charge-discharge cycle, then according to the second mapping relationship, the discharge time corresponding to the 10th charge-discharge cycle can be 2h, including 2 sub-discharge times, each sub-discharge time being a preset duration of 1h. The initial energy can be 100kWh, and the initial state of health (SOH) can be 90%. According to the first sub-mapping relationship, the discharge power of the first energy storage device within the 1st sub-discharge time is 40kW, and within the 2nd sub-discharge time is 45kW. Then, the discharge energy of the first energy storage device within the 10th charge-discharge cycle can be obtained as 85kWh. Furthermore, through the following formula, the final state of health of the first energy storage device corresponding to the 10th charge-discharge cycle can be obtained is 76.5%.

[0069]

[0070] Furthermore, taking 76.5% as the initial state of health of the first energy storage device under the 11th charge-discharge cycle, obtaining the initial energy of the first energy storage device in the 11th charge-discharge cycle, and then the final state of health SOH of the energy storage device corresponding to the 11th charge-discharge cycle can be determined by combining the first sub-mapping relationship and the second mapping relationship. By analogy, the target mapping relationship corresponding to the first energy storage device can be obtained. Then, the above operations are performed for each energy storage device to obtain multiple target mapping relationships.

[0071] It can be seen that in the embodiments of the present application, by obtaining the charge-discharge cycle data and historical charge-discharge data of multiple energy storage devices in real time, the functional relationship between the state of health SOH of each energy storage device and the number of charge-discharge cycles can be obtained. Furthermore, the change and decay conditions of the state of health SOH of each energy storage device in the future can be accurately predicted, which is beneficial to timely adjustment and optimization, and effectively inhibits the increase in the difference in the state of health SOH of multiple energy storage devices.

[0072] Step S205: Update the multiple target mapping relationships after each charge-discharge cycle, and adjust the operating state and target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle according to the latest determined multiple target mapping relationships and a preset balanced control optimization model, so that after multiple adjustments, the multiple energy storage devices simultaneously reach a preset limit state of health SOH, and then synchronous deactivation is achieved.

[0073] In a possible embodiment, the operating state includes normal operation and suspended operation; the adjusting the operating state and target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle according to the latest determined multiple target mapping relationships and a preset balanced control optimization model includes:[[]]

[0074] Determine a plurality of first target mapping relationships and a plurality of second target mapping relationships among the latest determined plurality of target mapping relationships according to the preset balance control optimization model, wherein the decline rate of the state of health (SOH) in a single first target mapping relationship is greater than the preset rate, and the decline rate of the state of health (SOH) in a single second target mapping relationship is less than the preset rate;

[0075] Determine a plurality of first reference energy storage devices corresponding to the plurality of first target mapping relationships and a plurality of second reference energy storage devices corresponding to the plurality of second target mapping relationships;

[0076] Reduce the usage frequency and / or the charge-discharge power of each first reference energy storage device in the current charge-discharge cycle through the balance control optimization model, and / or increase the usage frequency and / or the charge-discharge power of each second reference energy storage device in the current charge-discharge cycle through the balance control optimization model, so as to determine the operating state and the target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle.

[0077] Wherein, when adjusting the charge-discharge power of the energy storage device, the influence of the expected total revenue of the energy storage system jointly caused by it and the efficiency is considered.

[0078] Wherein, the balance control optimization model is constructed based on relevant data such as a plurality of historical charge-discharge data of the energy storage system and configuration parameters of a plurality of energy storage devices, and is obtained through multiple trainings by complex machine learning algorithms, and can optimize and determine the operating parameters of a plurality of energy storage devices in the entire energy storage system, such as operating state, charge-discharge power, charge-discharge duration, etc.

[0079] Exemplarily, the preset limit state of health (SOH) can be 60%, the current number of charge-discharge cycles can be 10 times, the final state of health (SOH) corresponding to the first energy storage device can be 80%, and the number of charge-discharge cycles corresponding to the state of health (SOH) of 60% in the target mapping relationship corresponding to the first energy storage device is 50 times. Then, in the current charge-discharge cycle, the decline rate of the state of health (SOH) corresponding to the first energy storage device = (final state of health (SOH) - limit state of health (SOH)) / remaining number of charge-discharge cycles = (80% - 60%) / 40 = 1.5%. By analogy, the decline rate of the state of health (SOH) corresponding to each energy storage device in the current charge-discharge cycle can be obtained. In addition, the balance control optimization model can also analyze the decline rate of the state of health (SOH) of each energy storage device through various algorithms such as curve slope and curve fitting.

[0080] It can be understood that the controller reduces the charge and discharge power of the energy storage device with a faster SOH decline to lower the depth of discharge (DOD) per cycle or suspend the use of this energy storage device, and / or increases the charge and discharge power and usage frequency of the energy storage device with a slower SOH decline, so that the SOHs of multiple energy storage devices gradually tend to be consistent. After multiple adjustments, the SOHs of multiple energy storage devices finally reach the preset limit health state SOH simultaneously, and then synchronous deactivation is achieved.

[0081] In a possible embodiment, updating the multiple target mapping relationships after each charge and discharge cycle includes:

[0082] After each charge and discharge cycle ends, obtain the final health state SOH corresponding to each energy storage device among the multiple energy storage devices, and use the final health state SOH corresponding to each energy storage device as the initial health state SOH in the next charge and discharge cycle; and,

[0083] Obtain the current energy of each energy storage device among the multiple energy storage devices, and use the current energy of each energy storage device as the initial energy in the next charge and discharge cycle;

[0084] Determine the target charge and discharge power corresponding to each energy storage device among the multiple energy storage devices in the next charge and discharge cycle;

[0085] Update the multiple target mapping relationships according to the second mapping relationship, the target charge and discharge power corresponding to each energy storage device in the next charge and discharge cycle, the initial health state SOH in the next charge and discharge cycle, and the initial energy in the next charge and discharge cycle.

[0086] In a possible embodiment, after updating the multiple target mapping relationships after each charge and discharge cycle, the method further includes:

[0087] Determine the multiple target charge and discharge cycle times corresponding to the multiple energy storage devices one by one after each charge and discharge cycle according to the latest determined multiple target mapping relationships and the preset limit health state SOH;

[0088] Obtain the charge and discharge efficiency, charging electricity price, and discharging electricity price of each energy storage device among the multiple energy storage devices, and obtain multiple charge and discharge efficiencies, multiple charging electricity prices, and multiple discharging electricity prices corresponding to the multiple energy storage devices one by one;

[0089] Determine the target revenue corresponding to each energy storage device according to the multiple target charge and discharge cycle times, the multiple charge and discharge efficiencies, the multiple charging electricity prices, and the multiple discharging electricity prices, and determine the target total revenue of the energy storage system according to the sum of the target revenues corresponding to each energy storage device.

[0090] In a possible embodiment, when the multiple energy storage devices reach the preset limit state of health (SOH) simultaneously, and thus achieve synchronous deactivation, the total target revenue of the energy storage system reaches the maximum value; the target revenue corresponding to each energy storage device is calculated by the following formula:

[0091]

[0092] where is the target revenue of the i-th energy storage device after m charge-discharge cycles, is the discharge energy of the i-th energy storage device in the a-th charge-discharge cycle, is the target number of charge-discharge cycles of the i-th energy storage device after m charge-discharge cycles, is the charge-discharge efficiency of the i-th energy storage device, is the discharge electricity price of the i-th energy storage device, is the charge electricity price of the i-th energy storage device.

[0093] It can be seen that in the embodiments of the present application, the relationship between the number of charge-discharge cycles of the energy storage device and the state of health (SOH) is recalculated after each charge-discharge cycle, and the operating state and charge-discharge power of each energy storage device are adjusted in the next cycle. At the same time, the total revenue of the energy storage system is synchronously calculated according to the adjusted results. After multiple adjustments, the total revenue of the energy storage system is the highest on the premise that each energy storage device ends its use simultaneously. It can perform optimal control according to the actual operating state of the energy storage device, which is beneficial to improving the accuracy of the synchronous deactivation control of multiple energy storage devices, as well as the operating efficiency and operating revenue of the energy storage system.

[0094] Please refer to Figure 3 , Figure 3 which is the overall flowchart of a method for synchronously deactivating energy storage devices provided by the embodiments of the present application. This method is applicable to the energy storage system as shown in Figure 1 . Combining Figure 1 , as shown in Figure 3 , the method for synchronously deactivating energy storage devices includes the following steps:

[0095] Step S301: Obtain the historical charge-discharge data of the energy storage system, and determine the first mapping relationship and the second mapping relationship according to the historical charge-discharge data.

[0096] Step S302: Obtain the initial state of health (SOH) and the initial energy of each energy storage device in the multiple energy storage devices in the current charge-discharge cycle.

[0097] Step S303: Determine the target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial state of health (SOH) and initial energy of each energy storage device in the current charge-discharge cycle, to obtain a plurality of target mapping relationships.

[0098] Step S304: Determine whether multiple energy storage devices simultaneously reach a preset limit state of health (SOH) after the current charge-discharge cycle. Among them, if it is determined that they do, execute Step S305; otherwise, execute Step S306.

[0099] Step S305: Control the synchronous deactivation of the multiple energy storage devices.

[0100] Step S306: Adjust the operating state and target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle according to the plurality of target mapping relationships and a preset balanced control optimization model. Further, the energy storage system performs the next charge-discharge cycle, and repeatedly updates and calculates the plurality of target mapping relationships corresponding to the multiple energy storage devices until it is determined that the multiple energy storage devices simultaneously reach the limit state of health (SOH).

[0101] In some embodiments, the adjusting the operating state and target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle according to the plurality of target mapping relationships and a preset balanced control optimization model includes: determining a plurality of first target mapping relationships and a plurality of second target mapping relationships in the latest determined plurality of target mapping relationships according to the preset balanced control optimization model, where the decline rate of the state of health (SOH) in a single first target mapping relationship is greater than a preset rate, and the decline rate of the state of health (SOH) in a single second target mapping relationship is less than the preset rate; determining a plurality of first reference energy storage devices corresponding to the plurality of first target mapping relationships and a plurality of second reference energy storage devices corresponding to the plurality of second target mapping relationships; reducing the usage frequency and / or the charge-discharge power in the current charge-discharge cycle of each first reference energy storage device through the balanced control optimization model, and / or increasing the usage frequency and / or the charge-discharge power in the current charge-discharge cycle of each second reference energy storage device through the balanced control optimization model, to determine the operating state and target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle.

[0102] In some embodiments, determining the target mapping relationship corresponding to each energy storage device based on the first mapping relationship, the second mapping relationship, and the initial state of health (SOH) and initial energy of each energy storage device in the current charge-discharge cycle to obtain a plurality of target mapping relationships includes: determining the discharge time corresponding to the current charge-discharge cycle according to the second mapping relationship; performing the following operations for each energy storage device among the plurality of energy storage devices to obtain the plurality of target mapping relationships: determining the discharge power of the energy storage device in the current charge-discharge cycle according to the first sub-mapping relationship corresponding to the energy storage device; and determining the discharge energy of the energy storage device in the current charge-discharge cycle according to the discharge power and the discharge time; and determining the final SOH of the energy storage device in the current charge-discharge cycle according to the discharge energy, the initial SOH and the initial energy of the energy storage device in the current charge-discharge cycle; and determining the final SOH of the energy storage device in the next charge-discharge cycle according to the first mapping relationship, the second mapping relationship, the final SOH, and the initial energy in the next charge-discharge cycle, so as to obtain the final SOH of the energy storage device in each charge-discharge cycle; determining the target mapping relationship corresponding to the energy storage device according to the final SOH of the energy storage device in each charge-discharge cycle.

[0103] In some embodiments, after determining that the current charge-discharge cycle ends, determining whether multiple energy storage systems simultaneously reach a preset limit state of health (SOH) includes: determining the final SOH of each energy storage device in the current charge-discharge cycle according to the plurality of target mapping relationships to obtain a plurality of final SOHs; comparing the plurality of final SOHs with the limit SOH one by one to determine whether the plurality of final SOHs are all equal to the limit SOH.

[0104] It can be seen that in the embodiments of the present application, the correspondence relationship between the health state (SOH) of multiple energy storage devices and the number of charge-discharge cycles can be updated in real time, and the charge-discharge power and operating state of each energy storage device in the next charge-discharge cycle can be adjusted according to a preset model, so as to gradually reduce the SOH difference between multiple energy storage devices, and finally realize that multiple energy storage devices reach the end of their service lives simultaneously, thereby realizing synchronous deactivation, which is beneficial to improving the stability and operating efficiency of the energy storage system.

[0105] The above embodiments introduce the method for synchronously deactivating a control method for an energy storage device from the perspective of a method flow. Embodiments of the present application can divide functional units of an electronic device according to the method examples. For example, each functional unit can be divided corresponding to each function, or two or more functions can be integrated into one processing unit. The integrated unit can be implemented in the form of hardware or in the form of a software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, only a logical function division, and there can be other division methods in actual implementation.

[0106] The following is an embodiment of the device of the present application. The embodiment of the device of the present application is used to execute the method implemented by the embodiment of the method of the present application. Please refer to Figure 4 , Figure 4 which is a block diagram of the functional units of a device for synchronously deactivating a control of an energy storage device provided by an embodiment of the present application. As Figure 4 shown, the device 4 for synchronously deactivating a control of an energy storage device includes:

[0107] A first acquisition unit 401, configured to acquire historical charge and discharge data of the energy storage system;

[0108] A first determination unit 402, configured to determine a first mapping relationship and a second mapping relationship according to the historical charge and discharge data. The first mapping relationship includes a plurality of first sub-mapping relationships, and a single first sub-mapping relationship represents the corresponding relationship between the charge and discharge power and time of the corresponding energy storage device. The second mapping relationship represents the corresponding relationship between the charge and discharge time and the charge and discharge cycle times of the energy storage system;

[0109] A second acquisition unit 403, configured to acquire the initial state of health SOH and the initial energy of each energy storage device in the current charge and discharge cycle among a plurality of energy storage devices;

[0110] A second determination unit 404, configured to determine a target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial state of health SOH and the initial energy of each energy storage device in the current charge and discharge cycle, and obtain a plurality of target mapping relationships. The target mapping relationship is used to predict the corresponding relationship between the state of health SOH of the energy storage device and the charge and discharge cycle times;

[0111] A processing unit 405, configured to update the plurality of target mapping relationships after each charge and discharge cycle, and adjust the operating state and the target charge and discharge power corresponding to each energy storage device in the next charge and discharge cycle according to the latest determined plurality of target mapping relationships and a preset balanced control optimization model, so that after multiple adjustments, the plurality of energy storage devices simultaneously reach a preset limit state of health SOH, thereby realizing synchronous deactivation.

[0112] It can be seen that in the embodiment of the present application, the controller acquires the historical charge-discharge data of the energy storage system; determines the first mapping relationship and the second mapping relationship according to the historical charge-discharge data; acquires the initial state of health SOH and the initial energy of each energy storage device in multiple energy storage devices in the current charge-discharge cycle; determines the target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial state of health SOH and the initial energy of each energy storage device in the current charge-discharge cycle, and obtains multiple target mapping relationships; updates the multiple target mapping relationships after each charge-discharge cycle, and adjusts the operating state and the target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle according to the latest determined multiple target mapping relationships and a preset balanced control optimization model, so that after multiple adjustments, multiple energy storage devices simultaneously reach a preset limit state of health SOH, thereby achieving synchronous deactivation. Therefore, in the present application, optimization control can be performed according to the actual operating state of the energy storage device, gradually reducing the difference in the state of health SOH between multiple energy storage devices, which is beneficial to improving the accuracy of synchronous deactivation control of multiple energy storage devices, as well as improving the operating efficiency and operating revenue of the energy storage system.

[0113] In some embodiments, the processing unit 405 adjusts the operating state and the target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle according to the latest determined multiple target mapping relationships and a preset balanced control optimization model, including: determining multiple first target mapping relationships and multiple second target mapping relationships in the latest determined multiple target mapping relationships according to the preset balanced control optimization model, the decrease rate of the state of health SOH in a single first target mapping relationship being greater than a preset rate, and the decrease rate of the state of health SOH in a single second target mapping relationship being less than the preset rate; determining multiple first reference energy storage devices corresponding to the multiple first target mapping relationships and multiple second reference energy storage devices corresponding to the multiple second target mapping relationships; reducing the usage frequency and / or the charge-discharge power in the current charge-discharge cycle of each first reference energy storage device through the balanced control optimization model, and / or increasing the usage frequency and / or the charge-discharge power in the current charge-discharge cycle of each second reference energy storage device through the balanced control optimization model, so as to determine the operating state and the target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle.

[0114] In some embodiments, the second determination unit 404 determines a target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial state of health (SOH) and initial energy of each energy storage device in the current charge-discharge cycle, to obtain a plurality of target mapping relationships, including: determining the discharge time corresponding to the current charge-discharge cycle according to the second mapping relationship; performing the following operations for each energy storage device among the plurality of energy storage devices to obtain the plurality of target mapping relationships: determining the discharge power of the energy storage device in the current charge-discharge cycle according to the first sub-mapping relationship corresponding to the energy storage device; and determining the discharge energy of the energy storage device in the current charge-discharge cycle according to the discharge power and the discharge time; and determining the final SOH of the energy storage device in the current charge-discharge cycle according to the discharge energy, the initial SOH and initial energy of the energy storage device in the current charge-discharge cycle; and determining the final SOH of the energy storage device in the next charge-discharge cycle according to the first mapping relationship, the second mapping relationship, the final SOH, and the initial energy in the next charge-discharge cycle, so as to obtain the final SOH of the energy storage device in each charge-discharge cycle; determining the target mapping relationship corresponding to the energy storage device according to the final SOH of the energy storage device in each charge-discharge cycle.

[0115] In some embodiments, the processing unit 405 updates the plurality of target mapping relationships after each charge-discharge cycle, including: obtaining the final SOH corresponding to each energy storage device among the plurality of energy storage devices after each charge-discharge cycle ends, and using the final SOH corresponding to each energy storage device as the initial SOH in the next charge-discharge cycle; and obtaining the current energy of each energy storage device among the plurality of energy storage devices, and using the current energy of each energy storage device as the initial energy in the next charge-discharge cycle; determining the target charge-discharge power corresponding to each energy storage device among the plurality of energy storage devices in the next charge-discharge cycle; updating the plurality of target mapping relationships according to the second mapping relationship, the target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle, the initial SOH in the next charge-discharge cycle, and the initial energy in the next charge-discharge cycle.

[0116] In some embodiments, after the processing unit 405 updates the multiple target mapping relationships after each charge-discharge cycle, the method further includes: determining, according to the latest determined multiple target mapping relationships and the preset limit state of health (SOH), the multiple target charge-discharge cycle numbers corresponding to the multiple energy storage devices one by one after each charge-discharge cycle; obtaining the charge-discharge efficiency, charging electricity price, and discharging electricity price of each energy storage device in the multiple energy storage devices, to obtain multiple charge-discharge efficiencies, multiple charging electricity prices, and multiple discharging electricity prices corresponding to the multiple energy storage devices one by one; determining the target revenue corresponding to each energy storage device according to the multiple target charge-discharge cycle numbers, the multiple charge-discharge efficiencies, the multiple charging electricity prices, and the multiple discharging electricity prices, and determining the target total revenue of the energy storage system according to the sum of the target revenues corresponding to each energy storage device.

[0117] In some embodiments, the discharging time corresponding to the current charge-discharge cycle includes multiple sub-discharging times, each sub-discharging time being a preset duration, and the discharging energy in the current charge-discharge cycle includes the discharging energy within each sub-discharging time; the discharging energy of the energy storage device in the current charge-discharge cycle is calculated by the following formula:

[0118]

[0119] Wherein, is the discharging energy of the i-th energy storage device in the m-th charge-discharge cycle, is the discharging time corresponding to the m-th charge-discharge cycle, m is a positive integer, n is the total number of energy storage devices, and j is the number of sub-discharging times included, is the preset duration of the sub-discharging time, is the j-th sub-discharging time, is the discharging power of the i-th energy storage device within the j-th sub-discharging time.

[0120] In some embodiments, the final state of health (SOH) of the energy storage device in the current charge-discharge cycle is determined according to the discharging energy, the initial state of health (SOH) and the initial energy of the energy storage device in the current charge-discharge cycle, and is calculated by the following formula:

[0121]

[0122] Wherein, is the final state of health (SOH) of the i-th energy storage device in the m-th charge-discharge cycle, is the initial energy of the i-th energy storage device in the m-th charge-discharge cycle, is the initial state of health (SOH) of the i-th energy storage device in the m-th charge-discharge cycle.

[0123] In some embodiments, when the multiple energy storage devices reach the preset limit state of health (SOH) simultaneously, and thus achieve synchronous deactivation, the total target revenue of the energy storage system reaches the maximum value; the target revenue corresponding to each energy storage device is calculated by the following formula:

[0124]

[0125] wherein, is the target revenue of the i-th energy storage device after m charge-discharge cycles, is the discharge energy of the i-th energy storage device in the a-th charge-discharge cycle, is the target number of charge-discharge cycles of the i-th energy storage device after m charge-discharge cycles, is the charge-discharge efficiency of the i-th energy storage device, is the discharge electricity price of the i-th energy storage device, is the charge electricity price of the i-th energy storage device.

[0126] It should be noted that the specific implementation process of this embodiment can refer to the specific implementation process described in the above method embodiment, and will not be described herein again.

[0127] Consistent with the above Figure 2 shown embodiment, please refer to Figure 5 , Figure 5 which is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As shown in Figure 5 , the electronic device 50 includes a processor 51, a memory 53, a communication bus 40, a communication interface 52, and one or more programs 531. The one or more programs 531 are stored in the memory 53 and are configured to be executed by the processor 51. The above programs include those for executing the methods described in the above embodiments.

[0128] In the embodiment of the present application, the processor 51 included in the computer device may have the functions corresponding to any method step in this embodiment.

[0129] Those skilled in the art can understand that Figure 5 the computer device structure shown in

[0130] does not constitute a limitation to the computer device, and may include more or fewer components than shown in the figure, or combine some components, or have different component arrangements.

[0131] It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should understand that this application is not limited by the described action sequence, because according to this application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0132] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0133] In the several embodiments provided by this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the above division of units is only a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces. The indirect coupling or communication connection of the device or unit can be in an electrical or other form.

[0134] The units described as separate components above may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0135] In addition, in each embodiment of this application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0136] If the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on such understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the above methods in various embodiments of this application. The aforementioned memory includes: various media that can store program codes, such as USB flash drives, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), mobile hard disks, magnetic disks, or optical discs.

[0137] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing relevant hardware through a program. This program can be stored in a computer-readable memory, and the memory can include: flash drives, read-only memories (English: Read-Only Memory, abbreviated: ROM), random access memories (English: Random Access Memory, abbreviated: RAM), magnetic disks, or optical discs, etc.

[0138] The above has introduced the embodiments of this application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. A synchronous deactivation control method for an energy storage device, characterized in that, A controller applied to an energy storage system, the energy storage system including a plurality of the energy storage devices, the method comprising: Obtaining historical charge and discharge data of the energy storage system; Determining a first mapping relationship and a second mapping relationship according to the historical charge and discharge data, the first mapping relationship including a plurality of first sub-mapping relationships, a single first sub-mapping relationship characterizing the correspondence between the charge and discharge power of the corresponding energy storage device and time, and the second mapping relationship characterizing the correspondence between the charge and discharge time of the energy storage system and the number of charge and discharge cycles; Obtaining the initial state of health SOH and the initial energy of each energy storage device among the plurality of energy storage devices in the current charge and discharge cycle; Determining a target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial state of health SOH and the initial energy of each energy storage device in the current charge and discharge cycle, obtaining a plurality of target mapping relationships, the target mapping relationship being used to predict the correspondence between the state of health SOH of the energy storage device and the number of charge and discharge cycles, and the energy storage system guaranteeing the power demand of the load for the plurality of energy storage devices during the prediction; After each charge and discharge cycle ends, obtaining the final state of health SOH corresponding to each energy storage device among the plurality of energy storage devices, and using the final state of health SOH corresponding to each energy storage device as the initial state of health SOH in the next charge and discharge cycle; and, obtaining the current energy of each energy storage device among the plurality of energy storage devices, and using the current energy of each energy storage device as the initial energy in the next charge and discharge cycle; and, determining the target charge and discharge power corresponding to each energy storage device among the plurality of energy storage devices in the next charge and discharge cycle; and, updating the plurality of target mapping relationships according to the second mapping relationship, the target charge and discharge power corresponding to each energy storage device in the next charge and discharge cycle, the initial state of health SOH in the next charge and discharge cycle, and the initial energy in the next charge and discharge cycle; Adjusting the operating state and the target charge and discharge power corresponding to each energy storage device in the next charge and discharge cycle according to the latest determined plurality of target mapping relationships and a preset balanced control optimization model, so that after multiple adjustments, the plurality of energy storage devices simultaneously reach a preset limit state of health SOH, and the target total revenue of the energy storage system reaches the maximum value when synchronous shutdown is achieved.

2. The method according to claim 1, characterized in that The operating state includes normal operation and suspended operation; the adjusting the operating state and the target charge and discharge power corresponding to each energy storage device in the next charge and discharge cycle according to the latest determined plurality of target mapping relationships and a preset balanced control optimization model includes: Determining a plurality of first target mapping relationships and a plurality of second target mapping relationships in the latest determined plurality of target mapping relationships according to the preset balanced control optimization model, the decline rate of the state of health SOH in a single first target mapping relationship being greater than a preset rate, and the decline rate of the state of health SOH in a single second target mapping relationship being less than the preset rate; Determine a plurality of first reference energy storage devices corresponding to the plurality of first target mapping relationships and a plurality of second reference energy storage devices corresponding to the plurality of second target mapping relationships; Reduce the usage frequency and / or the charge-discharge power of each of the first reference energy storage devices during the current charge-discharge cycle through the equilibrium control optimization model, and / or increase the usage frequency and / or the charge-discharge power of each of the second reference energy storage devices during the current charge-discharge cycle through the equilibrium control optimization model, so as to determine the operating state and the target charge-discharge power corresponding to each energy storage device during the next charge-discharge cycle.

3. The method according to claim 2, characterized in that, The charge-discharge power includes a charge power and a discharge power, and the charge-discharge time includes a charge time and a discharge time; determining the target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial state of health (SOH) and the initial energy of each energy storage device during the current charge-discharge cycle, and obtaining a plurality of target mapping relationships, including: Determine the discharge time corresponding to the current charge-discharge cycle according to the second mapping relationship; Perform the following operations for each energy storage device among the plurality of energy storage devices to obtain the plurality of target mapping relationships: Determine the discharge power of the energy storage device during the current charge-discharge cycle according to the first sub-mapping relationship corresponding to the energy storage device; and Determine the discharge energy of the energy storage device during the current charge-discharge cycle according to the discharge power and the discharge time; and Determine the final state of health (SOH) of the energy storage device during the current charge-discharge cycle according to the discharge energy, the initial state of health (SOH) and the initial energy of the energy storage device during the current charge-discharge cycle; and Determine the final state of health (SOH) of the energy storage device during the next charge-discharge cycle according to the first mapping relationship, the second mapping relationship, the final state of health (SOH), and the initial energy during the next charge-discharge cycle, so as to obtain the final state of health (SOH) of the energy storage device during each charge-discharge cycle; Determine the target mapping relationship corresponding to the energy storage device according to the final state of health (SOH) of the energy storage device during each charge-discharge cycle.

4. The method according to claim 3, wherein After updating the plurality of target mapping relationships after each charge-discharge cycle, the method further includes: Determine a plurality of target charge-discharge cycle times corresponding one by one to the plurality of energy storage devices after each charge-discharge cycle according to the latest determined plurality of target mapping relationships and the preset limit state of health (SOH); Obtain the charge-discharge efficiency, the charging electricity price, and the discharging electricity price of each energy storage device among the plurality of energy storage devices, and obtain a plurality of charge-discharge efficiencies, a plurality of charging electricity prices, and a plurality of discharging electricity prices corresponding one by one to the plurality of energy storage devices; Determine the target revenue corresponding to each energy storage device according to the plurality of target charge-discharge cycle times, the plurality of charge-discharge efficiencies, the plurality of charging electricity prices, and the plurality of discharging electricity prices, and determine the target total revenue of the energy storage system according to the sum of the target revenues corresponding to each energy storage device.

5. The method according to any one of claims 3-4, characterized in that, The discharge time corresponding to the current charge-discharge cycle includes multiple sub-discharge times, each sub-discharge time being a preset duration, and the discharge energy in the current charge-discharge cycle includes the discharge energy within each sub-discharge time; the discharge energy of the energy storage device in the current charge-discharge cycle is calculated by the following formula: Among them, is the discharge energy of the i-th energy storage device in the m-th charge-discharge cycle, is the discharge time corresponding to the m-th charge-discharge cycle, m is a positive integer, n is the total number of energy storage devices, and j is the number of sub-discharge times included, is the preset duration of the sub-discharge time, is the j-th sub-discharge time, is the discharge power of the i-th energy storage device within the j-th sub-discharge time.

6. The method according to claim 5, wherein The final state of health SOH of the energy storage device in the current charge-discharge cycle is determined based on the discharge energy, the initial state of health SOH and the initial energy of the energy storage device in the current charge-discharge cycle, and is calculated by the following formula: Wherein, is the final state of health (SOH) of the i-th energy storage device under the m-th charge-discharge cycle, is the initial energy of the i-th energy storage device under the m-th charge-discharge cycle, is the initial state of health (SOH) of the i-th energy storage device under the m-th charge-discharge cycle.

7. The method according to claim 4, wherein The target profit corresponding to each energy storage device is calculated by the following formula: Among them, is the target revenue of the i-th energy storage device after m charge-discharge cycles, is the discharge energy of the i-th energy storage device in the a-th charge-discharge cycle, is the target number of charge-discharge cycles of the i-th energy storage device after m charge-discharge cycles, is the charge-discharge efficiency of the i-th energy storage device, is the discharge electricity price of the i-th energy storage device, is the charging electricity price of the i-th energy storage device.

8. A synchronous deactivation control device for an energy storage device, characterized in that, A controller applied to an energy storage system, the energy storage system including a plurality of the energy storage devices, the device includes: A first acquisition unit, configured to acquire historical charge-discharge data of the energy storage system; A first determination unit, configured to determine a first mapping relationship and a second mapping relationship according to the historical charge-discharge data, the first mapping relationship including a plurality of first sub-mapping relationships, a single first sub-mapping relationship representing the corresponding relationship between the charge-discharge power and time of the corresponding energy storage device, and the second mapping relationship representing the corresponding relationship between the charge-discharge time and the number of charge-discharge cycles of the energy storage system; A second acquisition unit, configured to acquire the initial state of health SOH and the initial energy of each energy storage device among the plurality of energy storage devices in the current charge-discharge cycle; A second determination unit, configured to determine a target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial state of health SOH and the initial energy of each energy storage device in the current charge-discharge cycle, to obtain a plurality of target mapping relationships, the target mapping relationship being used to predict the corresponding relationship between the state of health SOH of the energy storage device and the number of charge-discharge cycles, and the energy storage system ensuring the power demand of the load for the plurality of energy storage devices during the prediction; A processing unit is configured to, after each charge-discharge cycle ends, obtain the final state of health (SOH) corresponding to each energy storage device among the multiple energy storage devices, and use the final SOH corresponding to each energy storage device as the initial SOH in the next charge-discharge cycle; and obtain the current energy of each energy storage device among the multiple energy storage devices, and use the current energy of each energy storage device as the initial energy in the next charge-discharge cycle; and determine the target charge-discharge power corresponding to each energy storage device among the multiple energy storage devices in the next charge-discharge cycle; and update the multiple target mapping relationships according to the second mapping relationship, the target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle, the initial SOH in the next charge-discharge cycle, and the initial energy in the next charge-discharge cycle; adjust the operating state and the target charge-discharge power corresponding to each energy storage device in the next charge-discharge cycle according to the latest determined multiple target mapping relationships and a preset balanced control optimization model, so that after multiple adjustments, the multiple energy storage devices simultaneously reach a preset limit SOH, and the target total revenue of the energy storage system reaches the maximum value when synchronous shutdown is achieved.

9. A energy storage system, characterized in that, It includes a controller and multiple energy storage devices, wherein the controller is configured to execute the steps of the method according to any one of claims 1-7.

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