Method and device for controlling synchronous deactivation of energy storage equipment

Abstract

The invention provides a synchronous shutdown control method and device for energy storage equipment. The method comprises the following steps: acquiring historical charging and discharging data of an energy storage system; determining a first mapping relation and a second mapping relation according to the historical charging and discharging data; obtaining an initial health state SOH and initial energy of each energy storage device under 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 health state SOH and the initial energy of each energy storage device; and updating the plurality of target mapping relationships after each charge-discharge cycle, and adjusting the running state and the 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 balance control optimization model, therefore, after multiple times of adjustment, the plurality of energy storage devices reach the preset SOH at the same time, and then synchronous shutdown is realized. The operation efficiency and the operation benefit of the energy storage system can be improved.

Description

Technical Field

[0001] The present application relates to the field of energy storage device control, and in particular to a method and device for controlling synchronous deactivation of energy storage devices. Background Art

[0002] In actual operation, energy storage systems usually adopt a constant power charging and discharging mode. Due to the limitations of transformer capacity and load power, the charging and discharging power of the energy storage system fluctuates. In this case, it is usually completed by synchronously raising and lowering the power of all energy storage devices. However, due to the battery consistency problem between multiple energy storage devices, at the end of the life cycle of the energy storage device (usually the health state SOH is reduced to 70% or 60% as the end of the life of the energy storage device), multiple energy storage devices will face the problem of inconsistent SOH, resulting in the energy storage devices needing to be stopped at different times for retirement, which will increase time and economic costs. Moreover, in some projects with minimum power requirements, the economic benefits of the energy storage equipment cannot be fully utilized, reducing project benefits.

[0003] Existing control schemes for synchronous deactivation of 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 differences in attenuation rates between 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, existing schemes cannot optimize control according to 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 life synchronously. Summary of the invention The present application provides a method and device for controlling the synchronous deactivation of energy storage devices. The controller obtains the historical charging and discharging data of the energy storage system and the initial state of health SOH and initial energy of each energy storage device in the current charging and discharging cycle, and then determines the corresponding relationship between the state of health SOH of each energy storage device and the number of charging and discharging cycles. Then, the corresponding relationship is updated after each charging and discharging cycle, and the charging and discharging power and operating state of each energy storage device in the next charging and discharging cycle are adjusted according to the updated corresponding relationship and a preset model, so as to gradually reduce the SOH difference between multiple energy storage devices, and finally achieve multiple energy storage devices reaching the end of their life at the same time, thereby achieving synchronous deactivation, which is beneficial to improving the stability and operating efficiency of the energy storage system.

[0004] In a first aspect, the present application provides a method for controlling synchronous deactivation of an energy storage device, which is applied to a controller of an energy storage system, wherein the energy storage system includes a plurality of the energy storage devices, and the method includes: Acquiring historical charging and discharging data of the energy storage system; Determine a first mapping relationship and a second mapping relationship according to the historical charge and discharge data, wherein the first mapping relationship includes a plurality of first sub-mapping relationships, a single first sub-mapping relationship represents a corresponding relationship between the charge and discharge power and time of the corresponding energy storage device, and the second mapping relationship represents a corresponding relationship between the charge and discharge time and the number of charge and discharge cycles of the energy storage system; Obtaining the initial health state SOH and initial energy of each energy storage device in the current charge and discharge cycle of the multiple energy storage devices; Determine a target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial health state SOH and initial energy of each energy storage device under the current charge and discharge cycle, and obtain multiple target mapping relationships, wherein the target mapping relationship is used to predict the correspondence between the health state SOH of the energy storage device and the number of charge and discharge cycles; The multiple target mapping relationships are updated after each charge and discharge cycle, and the operating state and target charge and discharge power corresponding to each energy storage device in the next charge and discharge cycle are adjusted according to the latest determined multiple target mapping relationships and the preset balance control optimization model, so that after multiple adjustments, the multiple energy storage devices simultaneously reach the preset limit health state SOH, thereby achieving synchronous deactivation.

[0005] In a second aspect, the present application provides a synchronous deactivation control device for energy storage devices, which is applied to a controller of an energy storage system, wherein the energy storage system includes a plurality of the energy storage devices, and the device includes: A first acquisition unit, used to acquire historical charge and discharge data of the energy storage system; A first determining unit, configured to determine a first mapping relationship and a second mapping relationship according to the historical charge and discharge data, wherein the first mapping relationship includes a plurality of first sub-mapping relationships, a single first sub-mapping relationship represents a corresponding relationship between the charge and discharge power and time of a corresponding energy storage device, and the second mapping relationship represents a corresponding relationship between the charge and discharge time and the number of charge and discharge cycles of the energy storage system; A second acquisition unit is used to acquire the initial health state SOH and initial energy of each energy storage device in the current charge and discharge cycle of the multiple energy storage devices; A second determination unit is used 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 health state SOH and initial energy of each energy storage device under the current charge and discharge cycle, to obtain a plurality of target mapping relationships, wherein the target mapping relationship is used to predict the correspondence between the health state SOH of the energy storage device and the number of charge and discharge cycles; A processing unit is used to update the multiple 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 multiple target mapping relationships and the preset balance control optimization model, so that after multiple adjustments, the multiple energy storage devices simultaneously reach the preset extreme health state SOH, thereby achieving synchronous deactivation.

[0006] In a third aspect, the present application provides an energy storage system, comprising a controller and a plurality of energy storage devices, wherein the controller is used to execute the step instructions in the method as described in any one of the first aspects.

[0007] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program / instruction stored thereon, and the computer program / instruction is executed by a processor to implement the steps of the method described in the first aspect above.

[0008] It can be seen that in the embodiment of the present application, the controller obtains the historical charge and discharge data of the energy storage system; determines the first mapping relationship and the second mapping relationship according to the historical charge and discharge data; obtains the initial health state SOH and initial energy of each energy storage device in the current charge and discharge cycle of multiple energy storage devices; determines the target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial health state SOH and initial energy of each energy storage device in the current charge and discharge cycle, and obtains multiple target mapping relationships; updates multiple target mapping relationships after each charge and discharge cycle, and adjusts 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 multiple target mapping relationships and the preset balanced control optimization model, so that after multiple adjustments, multiple energy storage devices simultaneously reach the preset limit health state SOH, thereby achieving synchronous deactivation. Compared with the existing synchronous deactivation control scheme for multiple energy storage devices that sets the same operating conditions and configuration parameters for multiple energy storage devices, the present application can optimize the control according to the actual operating state of the energy storage device, which is conducive to improving the accuracy of the synchronous deactivation control of multiple energy storage devices, as well as improving the operating efficiency and operating benefits of the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0010] Figure 1 is a system architecture diagram of an energy storage system provided in an embodiment of the present application; Figure 2 It is a flowchart of the steps of a method for controlling synchronous deactivation of an energy storage device provided in an embodiment of the present application; Figure 3 It is an overall flow chart of a method for controlling synchronous deactivation of an energy storage device provided in an embodiment of the present application; Figure 4 It is a block diagram of the functional units of a synchronous deactivation control device for energy storage equipment provided in an embodiment of the present application; Figure 5 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0011] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0012] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. 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 includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0013] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0014] In the embodiments of the present application, "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent the following three situations: A exists alone; A and B exist at the same time; B exists alone. Among them, A and B can be singular or plural.

[0015] In the embodiment of the present application, the symbol " / " can indicate that the objects associated with each other are in an "or" relationship. In addition, the symbol " / " can also indicate a division sign, that is, performing a division operation. For example, A / B can indicate A divided by B.

[0016] In the embodiments of the present application, "at least one item" or similar expressions refer to any combination of these items, including any combination of single items or plural items, and refer to one or more, and 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.

[0017] In the embodiments of the present application, "equal to" can be used in conjunction with greater than, and is applicable to the technical solution adopted when greater than, and can also be used in conjunction with less than, and is applicable to the technical solution adopted when 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.

[0018] Currently, the existing control schemes for synchronous deactivation of 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 differences in attenuation rates between 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 the control according to 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 life synchronously.

[0019] In view of the above problems, an embodiment of the present application provides a method and device for controlling synchronous deactivation of an energy storage device. The embodiment of the present application is described in detail below in conjunction with the accompanying drawings.

[0020] See also Figure 1 , Figure 1 A system architecture diagram of an energy storage system provided in an embodiment of the present application, such as Figure 1 As shown, the energy storage system includes a controller, multiple energy storage devices and a power grid.

[0021] 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 device is connected to the controller to facilitate data interaction between the energy storage device and the controller. It is understandable that the capacity, power, discharge efficiency and number and type of energy storage devices in the energy storage system can be set according to actual needs, and there is no specific limitation here. For example, the energy storage device can be an integrated energy storage cabinet or an energy storage container.

[0022] Furthermore, the energy storage device is connected to the power grid through a power interface to achieve energy storage and release.

[0023] Among them, the controller may specifically include a controller that is applied to one side of the network platform and is responsible for data processing in the background that can realize functions such as data transmission and data processing. It may 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. Alternatively, it may 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 networks (CDN), as well as big data and artificial intelligence platforms. It should be understood that when the application client runs on the controller, it can communicate with Figure 1 Data interaction is performed between the energy storage devices shown.

[0024] Specifically, the controller is used to obtain historical charge and discharge data of multiple energy storage devices; and, to obtain the initial state of health SOH and initial energy of multiple energy storage devices in the current charge and discharge cycle; and, to adjust the operating state and target charge and discharge power of multiple energy storage devices in each charge and discharge cycle.

[0025] See also Figure 2 , Figure 2 is a flowchart of a method for controlling synchronous deactivation of an energy storage device provided in an embodiment of the present application, which is applied to a controller of an energy storage system, such as Figure 2 As shown, the method comprises the following steps: Step S201, obtaining historical charging and discharging data of the energy storage system.

[0026] The historical charge and discharge data includes but is not limited to the number of historical charge and discharge cycles, as well as the timestamp, device identification, charge / discharge power, charge / discharge state, charge / discharge voltage, charge / discharge current, ambient temperature, charge / discharge start / end time, charge / discharge cycle start / end time of each energy storage device in each historical charge / discharge cycle, which is equivalent to data related to the operation of the energy storage system. The controller obtains the historical charge and discharge data by exchanging data with the energy storage device.

[0027] Exemplarily, before obtaining the historical charge and discharge data of the energy storage system, the basic parameters of multiple energy storage devices are initialized and defined. For example, suppose there are 5 energy storage devices, numbered 1 to 5, with initial energies of 100kWh, 120kWh, 90kWh, 110kWh, and 130kWh, respectively; efficiencies of 0.9, 0.85, 0.92, 0.88, and 0.95, respectively; initial health states SOH of 90%, 85%, 92%, 88%, and 95%, respectively; powers of 50kW, 40kW, 60kW, 45kW, and 55kW, respectively; the total power of the energy storage system is the sum of the powers of these 5 energy storage devices, which is 250kW; the lower power limits of each energy storage device are 20kW, 15kW, 25kW, 20kW, and 22kW, respectively, and the upper power limits are 60kW, 50kW, 70kW, 55kW, and 65kW, respectively. Such numbering and parameter definitions provide a basis for subsequent calculations and controls.

[0028] Step S202, determining a first mapping relationship and a second mapping relationship according to the historical charge and discharge data, wherein the first mapping relationship includes a plurality of first sub-mapping relationships, a single first sub-mapping relationship represents a corresponding relationship between the charge and discharge power and time of the corresponding energy storage device, and the second mapping relationship represents a corresponding relationship between the charge and discharge time and the number of charge and discharge cycles of the energy storage system.

[0029] The first mapping relationship and the second mapping relationship can be represented by a functional relationship, such as the first mapping relationship is represented by a formula including charge and discharge power and time, and the second mapping relationship is represented by a formula including charge and discharge time and charge and discharge cycle number. In addition, the first mapping relationship and the second mapping relationship can also be represented by a one-to-one mapping relationship.

[0030] For example, the charge and discharge power of each energy storage device in different time periods can be counted and plotted into a curve graph to obtain the corresponding relationship between the charge and discharge power of the device and time. Specifically, linear regression, polynomial regression, neural network and other methods or other machine learning algorithms can be used for fitting to obtain the corresponding relationship between the charge and discharge power of each energy storage device and time.

[0031] Exemplarily, the number of cycles of each energy storage device at different charge and discharge times can be counted and plotted into a scatter plot to obtain the corresponding relationship between the charge and discharge time and the number of cycles. Specifically, linear regression, exponential regression and other methods can be used for fitting to obtain the corresponding relationship between the charge and discharge time and the number of cycles. For example, after analysis, it was found that in the first 500 cycles, the charge and discharge time of each cycle increased roughly linearly, and as the number of cycles increased, the growth rate gradually slowed down, etc. The charge and discharge time in the first charge and discharge cycle can be 5h, including 2h of discharge time and 3h of charging time.

[0032] It can be understood that in this embodiment, a machine learning algorithm is used to predict the subsequent usage of the energy storage device based on the relationship between the charging and discharging power and time of the energy storage system in the past. The relationship between the charging and discharging time and the number of cycles can also be predicted. At the same time, to ensure the accuracy of the prediction, multiple charging and discharging cycles can be performed in the energy storage system, such as starting the prediction after 1,000 cycles, which is conducive to accurately predicting the operation of the energy storage device.

[0033] Step S203, obtaining the initial state of health SOH and initial energy of each energy storage device in the current charge and discharge cycle of the multiple energy storage devices.

[0034] Exemplarily, the current power level and health status SOH of each energy storage device are recorded after each charge and discharge cycle. For example, after the 10th cycle, the current energy Q1 of the first energy storage device is 50 kWh, and the current health status SOH1 is 88%; the current energy Q2 of the second energy storage device is 40 kWh, and the current health status SOH2 is 82%. And so on, the actual discharge conditions and current health status of all energy storage devices are recorded. If the current charge and discharge cycle is the 11th charge and discharge cycle, the current energy and current health status SOH of each energy storage device recorded after the 10th cycle can be used as the initial energy and initial health status SOH of the 11th charge and discharge cycle.

[0035] Specifically, the energy storage device can 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 through the equipped power metering device, such as a power meter, and send it to the controller of the energy storage system through data interaction; in addition, the controller can also calculate the charging energy and discharging energy in each charge and discharge cycle in real time, and obtain the real-time energy and real-time health status SOH of the energy storage device through a preset model or algorithm.

[0036] Step S204, 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 initial energy of each energy storage device in the current charge and discharge cycle, and obtaining multiple target mapping relationships, wherein the target mapping relationship is used to predict the correspondence between the state of health SOH of the energy storage device and the number of charge and discharge cycles.

[0037] In a possible embodiment, the charge and discharge power includes charging power and discharging power, and the charge and discharge time includes charging time and discharging time; the target mapping relationship corresponding to each energy storage device is determined according to the first mapping relationship, the second mapping relationship, and the initial health state SOH and initial energy of each energy storage device in the current charge and discharge cycle, and multiple target mapping relationships are obtained, including: Determine the discharge time corresponding to the current charge-discharge cycle according to the second mapping relationship; Perform the following operations for each of the multiple energy storage devices to obtain the multiple target mapping relationships: Determine the discharge power of the energy storage device in the current charge and 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 and discharge cycle according to the discharge power and the discharge time; and Determining the final health state SOH of the energy storage device in the current charge and discharge cycle according to the discharge energy, the initial health state SOH of the energy storage device in the current charge and discharge cycle, and the initial energy; and, Determine the final health state SOH of the energy storage device in the next charge and discharge cycle according to the first mapping relationship, the second mapping relationship, the final health state SOH and the initial energy in the next charge and discharge cycle, so as to obtain the final health state SOH of the energy storage device in each charge and discharge cycle; The target mapping relationship corresponding to the energy storage device is determined according to the final health state SOH of the energy storage device in each charge and discharge cycle.

[0038] In a possible embodiment, the discharge time corresponding to the current charge-discharge cycle includes multiple discharge sub-times, each discharge sub-time is a preset duration, and the discharge energy under the current charge-discharge cycle includes the discharge energy within each discharge sub-time; the discharge energy of the energy storage device under the current charge-discharge cycle is calculated by the following formula:

[0039] in, is the discharge energy of the i-th energy storage device in the m-th charge and discharge cycle, is the discharge time corresponding to the mth charge-discharge cycle, m is a positive integer, n is the total number of energy storage devices, and j is The amount of discharge time included, The preset duration of the electronic discharge time is is the jth electron discharge time, is the discharge power of the i-th energy storage device during the j-th discharge time.

[0040] In a possible embodiment, the final health state SOH of the energy storage device in the current charge and discharge cycle is determined according to the discharge energy, the initial health state SOH of the energy storage device in the current charge and discharge cycle, and the initial energy, and is calculated by the following formula:

[0041] in, is the final health state SOH of the i-th energy storage device in the m-th charge and discharge cycle, is the initial energy of the i-th energy storage device in the m-th charge-discharge cycle, is the initial health state SOH of the ith energy storage device under the mth charge and discharge cycle.

[0042] 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 prioritized, and the total power requirement of the energy storage system is used as a constraint during the prediction. For example, the energy storage system of a community needs to supply power to elevators, lighting, air conditioning and other equipment in the community. The total power demand of these devices during peak power consumption is 800kW. 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 as the number of cycles increases, it can always provide at least 800kW of power during peak power consumption. This is to prioritize the power demand of the load for the energy storage device, and at the same time, this 800kW is the total power constraint during the prediction.

[0043] 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 discharge sub-times, each discharge sub-time is a preset duration of 1h, the initial energy can be 100kWh, and the initial health state SOH can be 90%. According to the first sub-mapping relationship, the discharge power of the first energy storage device in the first discharge sub-time is 40kW, and the discharge power in the second discharge sub-time is 45kW. Then, the discharge energy of the first energy storage device in the 10th charge-discharge cycle can be obtained to be 85kWh. Then, the final health state corresponding to the first energy storage device in the 10th charge-discharge cycle can be obtained by the following formula: It is 76.5%.

[0044]

[0045] Furthermore, 76.5% is used as the initial health state of the first energy storage device in the 11th charge and discharge cycle, and the initial energy of the first energy storage device in the 11th charge and discharge cycle is obtained. Then, the final health state SOH corresponding to the energy storage device in the 11th charge and discharge cycle can be determined in combination with the first sub-mapping relationship and the second mapping relationship. Similarly, the target mapping relationship corresponding to the first energy storage device can be obtained, and then the above operation is performed for each energy storage device to obtain multiple target mapping relationships.

[0046] It can be seen that in the embodiment of the present application, by acquiring the charge and discharge cycle data and historical charge and discharge data of multiple energy storage devices in real time, the functional relationship between the health state SOH of each energy storage device and the number of charge and discharge cycles can be obtained, and then the change and attenuation of the health state SOH of each energy storage device in the future can be accurately predicted, which is conducive to timely adjustment and optimization, and effectively suppressing the increase in the difference in the health state SOH of multiple energy storage devices.

[0047] Step S205, updating the multiple target mapping relationships after each charge and discharge cycle, and adjusting 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 multiple target mapping relationships and the preset balance control optimization model, so that after multiple adjustments, the multiple energy storage devices simultaneously reach the preset limit health state SOH, thereby achieving synchronous deactivation.

[0048] In a possible embodiment, the operating state includes normal operation and suspended operation; the adjusting 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 multiple target mapping relationships and the preset balance control optimization model includes: Determine, according to the preset balanced control optimization model, a plurality of first target mapping relationships and a plurality of second target mapping relationships among the plurality of target mapping relationships that are most recently determined, wherein a decreasing speed of the health state SOH in a single first target mapping relationship is greater than a preset speed, and a decreasing speed of the health state SOH in a single second target mapping relationship is less than the preset speed; 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; The usage frequency of each of the first reference energy storage devices and / or the charge and discharge power in the current charge and discharge cycle are reduced through the balanced control optimization model, and / or the usage frequency of each of the second reference energy storage devices and / or the charge and discharge power in the current charge and discharge cycle are increased through the balanced control optimization model, so as to determine the corresponding operating state and target charge and discharge power of each energy storage device in the next charge and discharge cycle.

[0049] Among them, when adjusting the charging and discharging power of the energy storage equipment, the impact of the expected total benefit of the energy storage system caused by it and the efficiency is considered.

[0050] Among them, the balancing control optimization model is constructed based on multiple historical charging and discharging data of the energy storage system and related data such as the configuration parameters of multiple energy storage devices, and is obtained through multiple training of complex machine learning algorithms. It can optimize and determine the operating parameters of multiple energy storage devices in the entire energy storage system, such as operating status, charging and discharging power, and charging and discharging time.

[0051] For example, the preset limit health state SOH can be 60%, the current number of charge and discharge cycles can be 10 times, the final health state SOH corresponding to the first energy storage device can be 80%, and the number of charge and discharge cycles corresponding to the health state SOH of 60% in the target mapping relationship corresponding to the first energy storage device is 50 times. Then, in the current charge and discharge cycle, the decline rate of the health state SOH corresponding to the first energy storage device = (final health state SOH-limit health state SOH) / remaining number of charge and discharge cycles = (80%-60%) / 40=1.5%, and so on, the decline rate of the health state SOH corresponding to each energy storage device in the current charge and discharge cycle can be obtained. In addition, the balanced control optimization model can also obtain the decline rate of the health state SOH of each energy storage device through a variety of algorithm analysis such as curve slope and curve fitting.

[0052] It can be understood that the controller reduces the charge and discharge power of the energy storage device whose SOH decreases faster to reduce the deep discharge DOD of each cycle or suspends the use of this energy storage device, and / or increases the charge and discharge power and use frequency of the energy storage device whose SOH decreases slower, so that the SOH of multiple energy storage devices gradually tends to be consistent. After multiple adjustments, multiple energy storage devices finally reach the preset extreme health state SOH at the same time, thereby achieving synchronous deactivation. In a possible embodiment, updating the multiple target mapping relationships after each charge and discharge cycle includes: After each charge-discharge cycle, a final health state SOH corresponding to each energy storage device in the multiple energy storage devices is obtained, and the final health state SOH corresponding to each energy storage device is used as the initial health state SOH in the next charge-discharge cycle; and, Acquire the current energy of each of the multiple energy storage devices, and use the current energy of each of the energy storage devices as the initial energy in the next charge and discharge cycle; Determine a target charge and discharge power corresponding to each of the multiple energy storage devices in the next charge and discharge cycle; The multiple target mapping relationships are updated 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.

[0053] In a possible embodiment, after updating the multiple target mapping relationships after each charge and discharge cycle, the method further includes: Determine a plurality of target charge and discharge cycle numbers corresponding to the plurality of energy storage devices after each charge and discharge cycle according to the plurality of target mapping relationships determined most recently and the preset limit health state SOH; Acquire the charging and discharging efficiency, charging electricity price and discharging electricity price of each of the multiple energy storage devices, and obtain multiple charging and discharging efficiencies, multiple charging electricity prices and multiple discharging electricity prices corresponding to the multiple energy storage devices one by one; The target revenue corresponding to each energy storage device is determined according to the multiple target charge and discharge cycle numbers, the multiple charge and discharge efficiencies, the multiple charging electricity prices, and the multiple discharging electricity prices, and the target total revenue of the energy storage system is determined according to the sum of the target revenues corresponding to each energy storage device.

[0054] In a possible embodiment, when the multiple energy storage devices simultaneously reach a preset extreme health state SOH and then achieve synchronous deactivation, the target total benefit of the energy storage system reaches a maximum value; the target benefit corresponding to each energy storage device is calculated by the following formula:

[0055] in, is the target profit of the i-th energy storage device after m charge and 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 and discharge cycles after the i-th energy storage device has undergone m charge and discharge cycles, is the charging and discharging 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.

[0056] It can be seen that in the embodiment of the present application, the relationship between the number of cycles of the energy storage device and the health state SOH is recalculated after each charge and discharge cycle, and the operating state and charge and discharge power of each energy storage device are adjusted in the next cycle, and the total benefit of the energy storage system is synchronously calculated based on the adjustment results. Multiple adjustments are made to maximize the total benefit of the energy storage system under the premise that each energy storage device is terminated at the same time. The ability to optimize control according to the actual operating state of the energy storage device is conducive to improving the accuracy of the synchronous deactivation control of multiple energy storage devices, as well as improving the operating efficiency and operating benefits of the energy storage system.

[0057] See also Figure 3 , Figure 3is an overall flow chart of a method for controlling synchronous deactivation of energy storage devices provided in an embodiment of the present application. The method is applicable to Figure 1 The energy storage system shown, combined with Figure 1 ,like Figure 3 As shown, the energy storage device synchronous deactivation control method includes the following steps: Step S301 : acquiring historical charge and discharge data of an energy storage system, and determining a first mapping relationship and a second mapping relationship according to the historical charge and discharge data.

[0058] Step S302, obtaining the initial state of health SOH and initial energy of each energy storage device in the current charge and discharge cycle of the multiple energy storage devices.

[0059] Step S303, 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 initial energy of each energy storage device in the current charge and discharge cycle, and obtaining multiple target mapping relationships.

[0060] Step S304, determining whether multiple energy storage devices have simultaneously reached a preset limit health state SOH after the current charge-discharge cycle is completed. If so, executing step S305, otherwise executing step S306.

[0061] Step S305, controlling the multiple energy storage devices to be synchronously deactivated.

[0062] Step S306, adjusting 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 multiple target mapping relationships and the preset balanced control optimization model. Further, the energy storage system performs the next charge and discharge cycle, repeatedly updating and calculating the multiple target mapping relationships corresponding to the multiple energy storage devices, until it is determined that the multiple energy storage devices simultaneously reach the limit health state SOH.

[0063] In some embodiments, the adjusting the operating state and target charge and discharge power corresponding to each energy storage device in the next charge and discharge cycle according to multiple target mapping relationships and a preset balanced control optimization model includes: determining multiple first target mapping relationships and multiple second target mapping relationships among the multiple target mapping relationships most recently determined according to the preset balanced control optimization model, wherein the decrease rate of the health state SOH in a single first target mapping relationship is greater than a preset rate, and the decrease rate of the health state SOH in a single second target mapping relationship is 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 of each of the first reference energy storage devices and / or the charge and discharge power in the current charge and discharge cycle through the balanced control optimization model, and / or increasing the usage frequency of each of the second reference energy storage devices and / or the charge and discharge power in the current charge and discharge cycle through the balanced control optimization model, so as to determine the operating state and target charge and discharge power corresponding to each energy storage device in the next charge and discharge cycle.

[0064] In some embodiments, the target mapping relationship corresponding to each energy storage device is determined according to the first mapping relationship, the second mapping relationship, and the initial health state SOH and initial energy of each energy storage device in the current charge and discharge cycle to obtain multiple target mapping relationships, including: determining the discharge time corresponding to the current charge and discharge cycle according to the second mapping relationship; performing the following operations for each of the multiple energy storage devices to obtain the multiple target mapping relationships: determining the discharge power of the energy storage device in the current charge and discharge cycle according to the first sub-mapping relationship corresponding to the energy storage device; and determining the discharge power and the discharge time of the energy storage device in the current charge and discharge cycle. The invention relates to a method for determining a target mapping relationship corresponding to the energy storage device according to the discharge energy, the initial health state SOH of the energy storage device in the current charge and discharge cycle, and the initial energy thereof; and a method for determining a target mapping relationship corresponding to the energy storage device according to the discharge energy, the initial health state SOH of the energy storage device in the current charge and discharge cycle, and the initial energy thereof; and a method for determining a target mapping relationship corresponding to the energy storage device according to the target mapping relationship of the energy storage device in the next charge and discharge cycle, and the first mapping relationship, the second mapping relationship, the final health state SOH and the initial energy in the next charge and discharge cycle, so as to obtain the final health state SOH of the energy storage device in each charge and discharge cycle.

[0065] In some embodiments, the determining whether multiple energy storage systems simultaneously reach a preset limit health state SOH after the current charge and discharge cycle ends includes: determining the final health state SOH of each energy storage device under the current charge and discharge cycle according to the multiple target mapping relationships, and obtaining multiple final health state SOHs; comparing the multiple final health state SOHs with the limit health state SOHs one by one, and determining whether the multiple final health state SOHs are all equal to the limit health state SOH.

[0066] It can be seen that in the embodiment of the present application, the correspondence between the health status SOH of multiple energy storage devices and the number of charge and discharge cycles can be updated in real time, and the charge and discharge power and operating status of each energy storage device in the next charge and discharge cycle are adjusted according to the preset model, so as to gradually reduce the SOH difference between multiple energy storage devices, and finally achieve multiple energy storage devices reaching the end of life at the same time, and then achieve synchronous decommissioning, which is beneficial to improving the stability and operating efficiency of the energy storage system.

[0067] The above-mentioned embodiment introduces the synchronous deactivation control method of the energy storage device from the perspective of the method flow. The embodiment of the present application can divide the electronic device into functional units according to the method example. 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 embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation.

[0068] The following is an embodiment of the device of the present application, which is used to execute the method implemented by the method embodiment of the present application. Figure 4 , Figure 4 A functional unit composition block diagram of a synchronous deactivation control device for energy storage equipment provided in an embodiment of the present application, such as Figure 4 As shown, the energy storage device synchronous deactivation control device 4 includes: A first acquisition unit 401 is used to acquire historical charge and discharge data of the energy storage system; A first determining unit 402 is used to determine a first mapping relationship and a second mapping relationship according to the historical charge and discharge data, wherein the first mapping relationship includes a plurality of first sub-mapping relationships, a single first sub-mapping relationship represents a corresponding relationship between the charge and discharge power and time of the corresponding energy storage device, and the second mapping relationship represents a corresponding relationship between the charge and discharge time and the number of charge and discharge cycles of the energy storage system; The second acquisition unit 403 is used to acquire the initial health state SOH and initial energy of each energy storage device in the current charge and discharge cycle of the multiple energy storage devices; A second determining unit 404 is used 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 health state SOH and initial energy of each energy storage device under the current charge and discharge cycle, and obtain multiple target mapping relationships, wherein the target mapping relationship is used to predict the corresponding relationship between the health state SOH of the energy storage device and the number of charge and discharge cycles; The processing unit 405 is used to update the multiple 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 multiple target mapping relationships and the preset balance control optimization model, so that after multiple adjustments, the multiple energy storage devices simultaneously reach the preset extreme health state SOH, thereby achieving synchronous deactivation.

[0069] It can be seen that in the embodiment of the present application, the controller obtains the historical charge and discharge data of the energy storage system; determines the first mapping relationship and the second mapping relationship according to the historical charge and discharge data; obtains the initial health state SOH and initial energy of each energy storage device in the current charge and discharge cycle of multiple energy storage devices; determines the target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial health state SOH and initial energy of each energy storage device in the current charge and discharge cycle, and obtains multiple target mapping relationships; updates multiple target mapping relationships after each charge and discharge cycle, and adjusts 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 multiple target mapping relationships and the preset balanced control optimization model, so that after multiple adjustments, multiple energy storage devices simultaneously reach the preset limit health state SOH, thereby achieving synchronous deactivation. Therefore, in the present application, it is possible to optimize the control according to the actual operating state of the energy storage device, gradually reduce the difference in the health state SOH between multiple energy storage devices, which is conducive to improving the accuracy of the synchronous deactivation control of multiple energy storage devices, and improving the operating efficiency and operating benefits of the energy storage system.

[0070] In some embodiments, the processing unit 405 adjusts 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 multiple target mapping relationships and the preset balanced control optimization model, including: determining multiple first target mapping relationships and multiple second target mapping relationships among the latest determined multiple target mapping relationships according to the preset balanced control optimization model, the decline rate of the health state SOH in a single first target mapping relationship is greater than the preset speed, and the decline rate of the health state SOH in a single second target mapping relationship is less than the preset speed; 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 of each of the first reference energy storage devices and / or the charge and discharge power in the current charge and discharge cycle through the balanced control optimization model, and / or increasing the usage frequency of each of the second reference energy storage devices and / or the charge and discharge power in the current charge and discharge cycle through the balanced control optimization model, so as to determine the operating state and target charge and discharge power corresponding to each energy storage device in the next charge and discharge cycle.

[0071] In some embodiments, the second determination unit 404 determines the target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial health state SOH and initial energy of each energy storage device in the current charge and discharge cycle, and obtains multiple target mapping relationships, including: determining the discharge time corresponding to the current charge and discharge cycle according to the second mapping relationship; performing the following operations for each of the multiple energy storage devices to obtain the multiple target mapping relationships: determining the discharge power of the energy storage device in the current charge and discharge cycle according to the first sub-mapping relationship corresponding to the energy storage device; and determining the energy storage device in the current charge and discharge cycle according to the discharge power and the discharge time. The discharge energy under the current charge and discharge cycle; and, determining the final health state SOH of the energy storage device under the current charge and discharge cycle according to the discharge energy, the initial health state SOH of the energy storage device under the current charge and discharge cycle and the initial energy; and, determining the final health state SOH of the energy storage device under the next charge and discharge cycle according to the first mapping relationship, the second mapping relationship, the final health state SOH and the initial energy under the next charge and discharge cycle, so as to obtain the final health state SOH of the energy storage device under each charge and discharge cycle; determining the target mapping relationship corresponding to the energy storage device according to the final health state SOH of the energy storage device under each charge and discharge cycle.

[0072] In some embodiments, the processing unit 405 updates the multiple target mapping relationships after each charge and discharge cycle, including: obtaining the final health state SOH corresponding to each of the multiple energy storage devices after each charge and discharge cycle, and using the final health state SOH corresponding to each energy storage device as the initial health state SOH under the next charge and discharge cycle; and obtaining the current energy of each of the multiple energy storage devices, and using the current energy of each energy storage device as the initial energy under the next charge and discharge cycle; determining the target charge and discharge power corresponding to each of the multiple energy storage devices in the next charge and discharge cycle; updating 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 under the next charge and discharge cycle, and the initial energy under the next charge and discharge cycle.

[0073] In some embodiments, after the processing unit 405 updates the multiple target mapping relationships after each charge and discharge cycle, the method further includes: determining multiple target charge and discharge cycle numbers corresponding to the multiple energy storage devices after each charge and discharge cycle according to the latest determined multiple target mapping relationships and the preset limit health state SOH; obtaining the charge and discharge efficiency, charging electricity price and discharging electricity price of each energy storage device in the multiple energy storage devices, and obtaining multiple charge and discharge efficiencies, multiple charging electricity prices and multiple discharging electricity prices corresponding to the multiple energy storage devices; determining the target benefit corresponding to each energy storage device according to the multiple target charge and discharge cycle numbers, the multiple charge and discharge efficiencies, the multiple charging electricity prices and the multiple discharging electricity prices, and determining the target total benefit of the energy storage system according to the sum of the target benefits corresponding to each energy storage device.

[0074] In some embodiments, the discharge time corresponding to the current charge-discharge cycle includes multiple discharge sub-times, each discharge sub-time is a preset duration, and the discharge energy under the current charge-discharge cycle includes the discharge energy within each discharge sub-time; the discharge energy of the energy storage device under the current charge-discharge cycle is calculated by the following formula:

[0075] in, is the discharge energy of the i-th energy storage device in the m-th charge and discharge cycle, is the discharge time corresponding to the mth charge-discharge cycle, m is a positive integer, n is the total number of energy storage devices, and j is The amount of discharge time included, The preset duration of the electronic discharge time is is the jth electron discharge time, is the discharge power of the i-th energy storage device during the j-th discharge time.

[0076] In some embodiments, the final health state SOH of the energy storage device in the current charge and discharge cycle is determined according to the discharge energy, the initial health state SOH of the energy storage device in the current charge and discharge cycle, and the initial energy, and is calculated by the following formula:

[0077] in, is the final health state SOH of the i-th energy storage device in the m-th charge and discharge cycle, is the initial energy of the i-th energy storage device in the m-th charge-discharge cycle, is the initial health state SOH of the ith energy storage device under the mth charge and discharge cycle.

[0078] In some embodiments, when the multiple energy storage devices simultaneously reach a preset extreme health state SOH and then achieve synchronous deactivation, the target total benefit of the energy storage system reaches a maximum value; the target benefit corresponding to each energy storage device is calculated by the following formula:

[0079] in, is the target profit of the i-th energy storage device after m charge and 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 and discharge cycles after the i-th energy storage device has undergone m charge and discharge cycles, is the charging and discharging 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.

[0080] 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, which will not be described here.

[0081] With the above Figure 2 For details on the embodiments shown in the drawings, please refer to Figure 5 , Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, 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-mentioned programs include methods for executing the methods described in the above-mentioned embodiments.

[0082] In the embodiment of the present application, the processor 51 included in the computer device may have the function corresponding to any method step in the embodiment.

[0083] Those skilled in the art will understand that Figure 5 The computer device structure shown in the figure does not constitute a limitation on the computer device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0084] An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps of any method described in the above method embodiments, and the above computer includes an electronic device.

[0085] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0086] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0087] In the several embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the above-mentioned units, which is only a logical function division. There may be other division methods in actual implementation, such as 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 mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0088] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0089] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0090] If the above-mentioned 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 this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a memory, including a number of instructions to enable a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the above-mentioned methods in each embodiment of the present application. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0091] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable memory, which may include a flash drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0092] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for controlling synchronous deactivation of energy storage equipment, characterized in that: A controller applied to an energy storage system, wherein the energy storage system comprises a plurality of the energy storage devices, and the method comprises: Acquiring historical charging and discharging data of the energy storage system; Determine a first mapping relationship and a second mapping relationship according to the historical charge and discharge data, wherein the first mapping relationship includes a plurality of first sub-mapping relationships, a single first sub-mapping relationship represents a corresponding relationship between the charge and discharge power and time of the corresponding energy storage device, and the second mapping relationship represents a corresponding relationship between the charge and discharge time and the number of charge and discharge cycles of the energy storage system; Obtaining the initial health state SOH and initial energy of each energy storage device in the current charge and discharge cycle of the multiple energy storage devices; Determine a target mapping relationship corresponding to each energy storage device according to the first mapping relationship, the second mapping relationship, and the initial health state SOH and initial energy of each energy storage device under the current charge and discharge cycle, and obtain multiple target mapping relationships, wherein the target mapping relationship is used to predict the correspondence between the health state SOH of the energy storage device and the number of charge and discharge cycles; The multiple target mapping relationships are updated after each charge and discharge cycle, and the operating state and target charge and discharge power corresponding to each energy storage device in the next charge and discharge cycle are adjusted according to the latest determined multiple target mapping relationships and the preset balance control optimization model, so that after multiple adjustments, the multiple energy storage devices simultaneously reach the preset limit health state SOH, thereby achieving synchronous deactivation.

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 target charge and discharge power corresponding to each energy storage device in the next charge and discharge cycle according to the latest determined multiple target mapping relationships and the preset balanced control optimization model includes: Determine, according to the preset balanced control optimization model, a plurality of first target mapping relationships and a plurality of second target mapping relationships among the plurality of target mapping relationships that are most recently determined, wherein a decreasing speed of the health state SOH in a single first target mapping relationship is greater than a preset speed, and a decreasing speed of the health state SOH in a single second target mapping relationship is less than the preset speed; 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; The usage frequency of each of the first reference energy storage devices and / or the charge and discharge power in the current charge and discharge cycle are reduced through the balanced control optimization model, and / or the usage frequency of each of the second reference energy storage devices and / or the charge and discharge power in the current charge and discharge cycle are increased through the balanced control optimization model, so as to determine the corresponding operating state and target charge and discharge power of each energy storage device in the next charge and discharge cycle.

3. The method according to claim 2, characterized in that The charge and discharge power includes the charge power and the discharge power, and the charge and discharge time includes the charge time and the discharge time; the target mapping relationship corresponding to each energy storage device is determined according to the first mapping relationship, the second mapping relationship, and the initial health state SOH and initial energy of each energy storage device in the current charge and discharge cycle, and multiple target mapping relationships are obtained, including: Determine the discharge time corresponding to the current charge-discharge cycle according to the second mapping relationship; Perform the following operations for each of the multiple energy storage devices to obtain the multiple target mapping relationships: Determine the discharge power of the energy storage device in the current charge and 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 and discharge cycle according to the discharge power and the discharge time; and Determining the final health state SOH of the energy storage device in the current charge and discharge cycle according to the discharge energy, the initial health state SOH of the energy storage device in the current charge and discharge cycle, and the initial energy; and, Determine the final health state SOH of the energy storage device in the next charge and discharge cycle according to the first mapping relationship, the second mapping relationship, the final health state SOH and the initial energy in the next charge and discharge cycle, so as to obtain the final health state SOH of the energy storage device in each charge and discharge cycle; The target mapping relationship corresponding to the energy storage device is determined according to the final health state SOH of the energy storage device in each charge and discharge cycle.

4. The method according to claim 3, characterized in that: The updating of the multiple target mapping relationships after each charge and discharge cycle includes: After each charge-discharge cycle, a final health state SOH corresponding to each energy storage device in the multiple energy storage devices is obtained, and the final health state SOH corresponding to each energy storage device is used as the initial health state SOH in the next charge-discharge cycle; and, Acquire the current energy of each of the multiple energy storage devices, and use the current energy of each of the energy storage devices as the initial energy in the next charge and discharge cycle; Determine a target charge and discharge power corresponding to each of the multiple energy storage devices in the next charge and discharge cycle; The multiple target mapping relationships are updated 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.

5. The method according to claim 4, characterized in that After updating the multiple target mapping relationships after each charge and discharge cycle, the method further includes: Determine a plurality of target charge and discharge cycle numbers corresponding to the plurality of energy storage devices after each charge and discharge cycle according to the plurality of target mapping relationships determined most recently and the preset limit health state SOH; Acquire the charging and discharging efficiency, charging electricity price and discharging electricity price of each of the multiple energy storage devices, and obtain multiple charging and discharging efficiencies, multiple charging electricity prices and multiple discharging electricity prices corresponding to the multiple energy storage devices one by one; The target revenue corresponding to each energy storage device is determined according to the multiple target charge and discharge cycle numbers, the multiple charge and discharge efficiencies, the multiple charging electricity prices, and the multiple discharging electricity prices, and the target total revenue of the energy storage system is determined according to the sum of the target revenues corresponding to each energy storage device.

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

7. The method according to claim 6, characterized in that The final health state SOH of the energy storage device in the current charge and discharge cycle is determined according to the discharge energy, the initial health state SOH of the energy storage device in the current charge and discharge cycle, and the initial energy, and is calculated by the following formula: in, is the final health state SOH of the i-th energy storage device in the m-th charge and discharge cycle, is the initial energy of the i-th energy storage device in the m-th charge-discharge cycle, is the initial health state SOH of the ith energy storage device under the mth charge and discharge cycle.

8. The method according to claim 7, characterized in that When the multiple energy storage devices simultaneously reach the preset extreme health state SOH and then achieve synchronous deactivation, the target total benefit of the energy storage system reaches the maximum value; the target benefit corresponding to each energy storage device is calculated by the following formula: in, is the target profit of the i-th energy storage device after m charge and 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 and discharge cycles after the i-th energy storage device has undergone m charge and discharge cycles, is the charging and discharging 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.

9. A synchronous deactivation control device for energy storage equipment, characterized in that: A controller applied to an energy storage system, wherein the energy storage system comprises a plurality of the energy storage devices, and the device comprises: A first acquisition unit, used to acquire historical charge and discharge data of the energy storage system; A first determining unit, configured to determine a first mapping relationship and a second mapping relationship according to the historical charge and discharge data, wherein the first mapping relationship includes a plurality of first sub-mapping relationships, a single first sub-mapping relationship represents a corresponding relationship between the charge and discharge power and time of a corresponding energy storage device, and the second mapping relationship represents a corresponding relationship between the charge and discharge time and the number of charge and discharge cycles of the energy storage system; A second acquisition unit is used to acquire the initial health state SOH and initial energy of each energy storage device in the current charge and discharge cycle of the multiple energy storage devices; A second determination unit is used 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 health state SOH and initial energy of each energy storage device under the current charge and discharge cycle, to obtain a plurality of target mapping relationships, wherein the target mapping relationship is used to predict the correspondence between the health state SOH of the energy storage device and the number of charge and discharge cycles; A processing unit is used to update the multiple 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 multiple target mapping relationships and the preset balance control optimization model, so that after multiple adjustments, the multiple energy storage devices simultaneously reach the preset extreme health state SOH, thereby achieving synchronous deactivation.

10. An energy storage system, characterized in that: It comprises a controller and a plurality of energy storage devices, wherein the controller is used to execute the steps of the method as claimed in any one of claims 1 to 8.

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