Operation control method and device of energy storage system

Abstract

The invention relates to an operation control method and device of an energy storage system. The method comprises the following steps: judging whether the duration of the energy storage system in a standby working state is greater than a preset standing threshold value or not; if yes, judging whether the energy storage system is in a first target time range or a second target time range of the location; when in the first target time range, performing a first operation control mode: controlling the energy storage system to enter a preset target low power consumption mode or a starting operation mode according to a working mode and PV power set by a user; when in a second target time range, performing a second operation control mode: according to the working mode set by the user, controlling the energy storage system to enter a preset target low-power-consumption mode or a starting operation mode; whether the energy storage system enters the first target time range or not is detected in real time; the method can improve the performance of the energy storage system.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, and particularly to an operation control method and device for an energy storage system. Background Art

[0002] Energy storage systems are widely used in various fields and have three states: charging, discharging, and standby. The reasons for standby include external power supply problems, system self-faults and protection mechanisms, operation strategies, and user operations. To reduce standby power consumption, the common solution is to automatically shut down after a certain period of standby. This solution has many problems: Energy storage systems without photovoltaic (PV) or grid activation functions need to be manually turned on, with slow response and inability to charge and discharge in a timely manner; Energy storage systems with PV or grid activation functions may turn on and off frequently, resulting in hardware damage and reducing system stability and efficiency. These problems seriously reduce the performance of energy storage systems and urgently need to be solved. Summary of the Invention

[0003] Based on this, it is necessary to provide an operation control method and device for an energy storage system that can improve the performance of the energy storage system in view of the above technical problems.

[0004] In a first aspect, the present application provides an operation control method for an energy storage system, including:

[0005] Determine whether the continuous duration of the energy storage system in the standby working state is greater than a preset static threshold;

[0006] If so, determine whether the energy storage system is in a first target time range or a second target time range of its location;

[0007] When in the first target time range, perform a first operation control mode: control the energy storage system to enter a preset target low-power consumption mode or start the operation mode according to the working mode set by the user and the PV power;

[0008] When in the second target time range, perform a second operation control mode: control the energy storage system to enter a preset target low-power consumption mode or start the operation mode according to the working mode set by the user; and real-time detect whether the energy storage system enters the first target time range.

[0009] In a second aspect, the present application further provides an operation control device for an energy storage system, including:

[0010] A judgment module, configured to determine whether the continuous duration of the energy storage system in the standby working state is greater than a preset static threshold; if so, determine whether the energy storage system is in a first target time range or a second target time range of its location;

[0011] The operation control module is used to perform the first operation control mode when it is within the first target time range: according to the working mode set by the user and the PV power, control the energy storage system to enter the preset target low-power mode or start the operation mode; when it is within the second target time range, perform the second operation control mode: according to the working mode set by the user, control the energy storage system to enter the preset target low-power mode or start the operation mode; and detect in real time whether the energy storage system enters the first target time range.

[0012] In a third aspect, the present application also provides a computer device, including a storage module and a processing module. The storage module stores a computer program, and when the processing module executes the computer program, the method described in the first aspect is implemented.

[0013] In a fourth aspect, the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by the processing module, the method described in the first aspect is implemented.

[0014] In a fifth aspect, the present application also provides a computer program product, including a computer program. When the computer program is executed by the processing module, the method described in the first aspect is implemented.

[0015] For the above operation control method and device of the energy storage system, the method includes: determining whether the continuous duration of the energy storage system in the standby working state is greater than a preset static threshold; if so, determining whether the energy storage system is within the first target time range or the second target time range of its location; when it is within the first target time range, perform the first operation control mode: according to the working mode set by the user and the PV power, control the energy storage system to enter the preset target low-power mode or start the operation mode; when it is within the second target time range, perform the second operation control mode: according to the working mode set by the user, control the energy storage system to enter the preset target low-power mode or start the operation mode; and detect in real time whether the energy storage system enters the first target time range. Through this solution, the operation control method of the energy storage system effectively solves the problems of high standby loss, untimely response, and hardware damage caused by frequent switching on and off of the energy storage system through segmented control and intelligent activation strategies. It can flexibly switch between the preset target low-power mode or the operation mode according to the time range after the standby duration exceeds the preset static threshold, and at the same time, perform precise control in combination with the photovoltaic power and the working mode set by the user, avoiding the hardware damage and efficiency reduction caused by delayed manual intervention or frequent switching on and off in the traditional solution, and saving unnecessary energy consumption of the system. This method not only significantly reduces the standby loss, but also improves the response speed and stability of the system, and enhances the overall performance and economy of the energy storage system. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, the 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 drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic flow chart of the operation control method of an energy storage system in an embodiment;

[0018] Figure 2 It is a schematic flow chart of the operation control method of the energy storage system corresponding to the first operation control mode in an embodiment;

[0019] Figure 3 It is a schematic flow chart of the operation control method of the energy storage system corresponding to the second operation control mode in an embodiment;

[0020] Figure 4 It is a structural block diagram of an operation control device of an energy storage system in an embodiment;

[0021] Figure 5 It is the internal structure diagram of the operation control device of the energy storage system in an embodiment. Specific embodiments

[0022] In order to make the purpose, technical solutions and advantages of the present application clearer, the following further details the present application in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] The energy storage system has three basic states: charging, discharging and standby.

[0024] There are various reasons for the energy storage system to enter the standby state. From the perspective of external power supply, when there is a grid fault or power outage, to avoid being impacted, the energy storage system will automatically disconnect from the grid and enter standby; a charging device failure will cause the energy storage system to be unable to receive the charging current and enter standby; some specific energy storage systems can only be in the standby state due to the lack of a suitable charging power source. Internal system faults or the triggering of protection mechanisms will also trigger standby. For example, when the battery management system fails, to prevent the battery from overcharging, over-discharging, abnormal temperature, etc., the system will stop charging and discharging; when there is an internal short circuit or open circuit in the battery or an inverter failure causes abnormal charging and discharging, the system will also enter standby. In addition, operation strategies and user operations will also make the system enter standby. Users can set the system to standby at specific times through software or the panel according to their needs. Small portable energy storage devices may also enter standby for a long time because users forget to switch the mode. At the same time, the system control strategy will also automatically adjust the system to enter the standby state according to the grid operation and load demand.

[0025] To reduce the power consumption of the energy storage system during standby, the commonly adopted method is to automatically shut down after a period of standby. However, this method has obvious defects. For an energy storage system without PV activation or grid activation function, users need to manually operate to turn it on, which may lead to untimely response and inability to quickly provide emergency power in case of an emergency in the power grid; it is difficult to accurately grasp the peak and valley periods of the power grid for charging and discharging, and the peak shaving and valley filling function of the energy storage system cannot be fully utilized; special personnel need to be arranged to be responsible for the switching operation, increasing the labor cost and management difficulty; and in the intelligent power grid environment, it cannot be effectively integrated with other intelligent power grid devices.

[0026] For an energy storage system with PV activation or grid activation function, after automatic shutdown, a cycle state of "activation and startup - standby and shutdown - activation and startup" will occur, resulting in frequent startup and shutdown of the system. Frequent startup and shutdown will not only cause damage to hardware devices, such as irreversible changes in the structure of the electrode materials of lithium-ion batteries and damage to electronic components due to current and voltage shocks, but also reduce the system stability and efficiency, making it possible that self-check and initialization operations may not be completed normally, additional energy is consumed during device startup, and the energy conversion efficiency of devices such as inverters will also be reduced.

[0027] To solve the above defects and improve the performance of the energy storage system, the embodiments of the present application propose an operation control method and device for the energy storage system. The operation control method of the energy storage system effectively solves the problems of high standby loss, untimely response, and hardware damage caused by frequent startup and shutdown of the energy storage system through time-division control and intelligent activation strategies. It can flexibly switch to a preset target low-power mode or operation mode according to the time range after the standby duration exceeds the preset static threshold, and at the same time, combined with the photovoltaic power and the working mode set by the user for precise control, avoiding the hardware damage and efficiency reduction caused by human intervention delay or frequent startup and shutdown in the traditional scheme. This method not only significantly reduces the standby loss, but also improves the response speed and stability of the system, and enhances the overall performance and economy of the energy storage system.

[0028] In the above preset target low-power mode, part of the power supply inside the energy storage system is cut off, reducing unnecessary energy consumption. Exemplarily, in the preset target low-power mode, it is controlled that the power supply of the 1.8V part inside the energy storage system is cut off. This part of the power supply usually provides energy for some internal circuit modules. After the power supply is cut off, these modules stop working, further reducing the power consumption. The voltage regulator is turned off. The function of the voltage regulator is to stabilize the voltage of the system. Turning it off can avoid its own energy consumption. Through these measures, the system can reach a power consumption of less than 10uA at the lowest, greatly reducing the power waste in the standby state.

[0029] The operation control method of the energy storage system provided by the embodiments of the present application can be applied to the operation control device of the energy storage system. The operation control device of the energy storage system can be a functional module or functional entity for implementing the above-mentioned operation control method of the energy storage system.

[0030] In practical applications, the above-mentioned operation control device of the energy storage system varies in many ways. Taking the intelligent home energy storage system as an example, it may be an intelligent energy management terminal with powerful computing and control capabilities. This terminal device is usually equipped with a high-performance processor (similar to a microcontroller unit MCU), which can monitor the status of the energy storage battery in the home in real time, such as parameters like the remaining battery power, voltage, and temperature. It can interact with the power grid to obtain the current electricity price information and the load situation of the power grid. When it detects that the energy storage system is in the standby state and the continuous duration exceeds the preset static threshold, the terminal will determine different operation control modes according to the current time range to achieve the efficient and intelligent operation of the home energy storage system.

[0031] In an exemplary embodiment, as Figure 1 shown, a schematic flowchart of an operation control method of an energy storage system is provided. The execution subject of the method can be the operation control device of the energy storage system. The above method includes the following steps 101 to step 105:

[0032] 101. Obtain the continuous duration of the energy storage system in the standby working state.

[0033] Among them, the above-mentioned energy storage system can be a system capable of storing electrical energy and releasing electrical energy when needed, and can be used to balance power supply and demand, improve the stability of the power system, etc.

[0034] The above standby working state refers to the state where the energy storage system is neither charging nor discharging, and at this time the system is in a state of waiting for instructions or waiting for suitable conditions for charging and discharging operations.

[0035] In some embodiments, a timer can be set in the energy storage system. When the system enters the standby state, the timer starts timing. The microcontroller (MCU) can regularly read the value of the timer to obtain the continuous duration of the standby state.

[0036] In some embodiments, the log recording function of the system can be used to record the timestamps when the system enters and exits the standby state. By calculating the difference between the current time and the timestamp when entering the standby state, the continuous duration of the standby working state is obtained.

[0037] 102. Determine whether the continuous duration is greater than the preset static threshold.

[0038] Among them, the above preset standby threshold can be a pre-set time threshold. When the continuous duration of the energy storage system in the standby state exceeds this threshold, the system will consider whether to enter the preset target low-power mode to reduce energy loss.

[0039] In some embodiments, if the continuous duration is greater than the preset standby threshold, then perform the next step 103; otherwise, continue to monitor the standby duration, that is, return to execute the above step 101.

[0040] 103. Determine whether the energy storage system is in the first target time range or the second target time range of the location.

[0041] Among them, the above first target time range and second target time range can be different time periods of a day. Exemplarily, the above first target time range can be the daytime time range, and the above second target time range can be the nighttime time range. For example, the time period from 6 pm to 5 am the next morning is the nighttime time range, and the rest of the time is the daytime time range, but it is not limited to this, and the first target time range and the second target time range can be set according to the actual situation.

[0042] 104. When in the first target time range, perform the first operation control mode: Control the energy storage system to enter the preset target low-power mode or start the operation mode according to the working mode set by the user and the PV power.

[0043] Exemplarily, taking the first target time range as the daytime time range as an example, when currently in the daytime time range, the energy storage system can be controlled to enter the preset target low-power mode or start the operation mode according to the working mode set by the user and the PV power.

[0044] 105. When in the second target time range, perform the second operation control mode: Control the energy storage system to enter the preset target low-power mode or start the operation mode according to the working mode set by the user; and continuously detect whether the energy storage system enters the first target time range.

[0045] Exemplarily, taking the second target time range as the nighttime time range as an example, when currently in the nighttime time range, the energy storage system can be controlled to enter the preset target low-power mode or start the operation mode according to the working mode set by the user and the PV power.

[0046] The working mode set by the user in the above steps 104 and 105 can include: peak shaving and valley filling mode, or non-peak shaving and valley filling mode.

[0047] In the above-mentioned peak shaving and valley filling mode, according to the peak and valley periods of power consumption of the power grid, charging can be carried out during the valley period to store electric energy; discharging can be carried out during the peak period to transmit electric energy to the power grid, so as to balance the load of the power grid and reduce the electricity cost. In contrast, the non-peak shaving and valley filling mode is a mode of charging and discharging not according to the peak and valley periods of the power grid, and the charging and discharging operations may be carried out according to the specific needs of users or other factors.

[0048] Among them, controlling the energy storage system to enter the preset target low-power mode is to perform corresponding configuration and control on each component of the energy storage system. For example, closing unnecessary function modules, reducing the operating frequency of some components, adjusting the power management strategy, etc., to achieve low-power operation. At the same time, the system can also set a corresponding wake-up mechanism so that it can be woken up from the preset target low-power mode in time when needed and enter the startup operation mode to resume normal charging and discharging operations.

[0049] Exemplarily, in the above-mentioned preset target low-power mode, the power supply of the 1.8V part inside the energy storage system is cut off, and the voltage regulator is turned off, and the power consumption can be as low as below 10uA.

[0050] Among them, the power supply of the 1.8V part inside the energy storage system usually provides energy for some internal circuit modules. After the power supply is cut off, these modules stop working, which can reduce the power consumption; the function of turning off the voltage regulator is to stabilize the voltage of the system. Turning it off can avoid its own energy loss. Through these measures, the power consumption of the system can be as low as below 10uA, greatly reducing the power waste in the standby state.

[0051] The above-mentioned operation control method of the energy storage system effectively solves the problems of high standby loss, untimely response and hardware damage caused by frequent on-off of the energy storage system through time-sharing control and intelligent activation strategy. It can flexibly switch between the preset target low-power mode or the operation mode according to the time range after the standby duration exceeds the preset static threshold, and at the same time, combined with the photovoltaic power and the working mode set by the user for precise control, avoiding the hardware damage and efficiency reduction caused by delayed manual intervention or frequent on-off in the traditional scheme, and saving unnecessary energy consumption of the system. This method not only significantly reduces the standby loss, but also improves the response speed and stability of the system, and enhances the overall performance and economy of the energy storage system.

[0052] In some embodiments, in the above first operation control mode, it can be determined whether the system is in the peak shaving and valley filling mode set by the user; if so, the first wake-up interval time is obtained according to the current time and the grid charging time set by the user, the second wake-up interval time is obtained according to the current PV power of the energy storage system connected at the current moment, and the energy storage system is controlled to enter the preset target low-power mode or the startup operation mode according to the first wake-up interval time and the second wake-up interval time; if not, the third wake-up interval time is obtained according to the current PV power, and the energy storage system is controlled to enter the preset target low-power mode or the startup operation mode according to the third wake-up interval time.

[0053] In some embodiments, in the first operation control mode and the second operation control mode, when the energy storage system receives an external activation signal, the energy storage system is controlled to enter the startup operation mode.

[0054] Among them, the above externally input activation signal can be a signal indicating to enter the startup operation mode input by the user. For example, the activation signal can be a key input signal received by the MCU of the energy storage system. When receiving such a signal input externally, it is necessary to give priority to the response.

[0055] In the above embodiments, controlling the startup operation of the energy storage system according to the external activation signal increases the flexibility of the system response, can respond to external demands in a timely manner, avoids delays in startup due to the preset time not arriving, better meets the usage requirements in emergencies or special situations, and improves the practicality and adaptability of the energy storage system.

[0056] In an exemplary embodiment, Figure 2 is a schematic flowchart of the operation control method of the energy storage system corresponding to the first operation control mode in an embodiment. The execution subject of this method can be the operation control device of the energy storage system, such as Figure 2 As shown, the method includes the following steps 201 to step 208:

[0057] 201. Obtain the continuous duration of the energy storage system in the standby working state.

[0058] 202. Determine whether the continuous duration is greater than the preset static threshold.

[0059] 203. Determine the first target time range where the energy storage system is located.

[0060] For the above steps 201 to 203, reference can be made to the relevant descriptions of the above steps 101 to 103, which will not be elaborated here.

[0061] 204. Determine whether the system is in the peak shaving and valley filling mode set by the user.

[0062] In the embodiments of the present application, it can be determined whether the working mode set by the user is the peak shaving and valley filling mode. If it is in the peak shaving and valley filling mode, the following steps 205 and 206 are executed; if it is in a non-peak shaving and valley filling mode, the following steps 207 and 208 are executed.

[0063] In an actual application scenario, the user can set the working mode through an operation interface associated with the energy storage system (such as a control panel, a mobile phone APP, etc.). The operation control device of the energy storage system will obtain this setting information of the user and compare it with the setting identifier of the peak shaving and valley filling mode. For example, when the user selects the "peak shaving and valley filling" option on the operation interface, the system will record this selection, and when executing this step, it will determine that the system is in the peak shaving and valley filling mode by reading the stored setting information; if other modes are selected, it is determined as a non-peak shaving and valley filling mode. This judgment is an important basis for the execution of different control strategies later, because there are differences in the charge and discharge strategies and timing selections of the energy storage system in the peak shaving and valley filling mode and the non-peak shaving and valley filling mode, which directly affect the system's management and utilization efficiency of energy.

[0064] It should be noted that in the first operation control mode, regardless of whether the energy storage system is in the peak shaving and valley filling mode or the non-peak shaving and valley filling mode, if an external activation signal is received during operation, then the energy storage system can be controlled to enter the startup operation mode. In this way, the energy storage system can quickly respond to external instructions, get rid of the limitation of the preset time, and start operations such as charging in a timely manner, improving the system's response ability to different scenarios and energy utilization efficiency. The external activation signal can be but is not limited to a key signal. For example, when the user presses the startup button set on the energy storage system, the energy storage system starts immediately.

[0065] 205. Obtain the first wake-up interval time according to the current time and the grid charging time set by the user, and obtain the second wake-up interval time according to the current PV power connected to the energy storage system at the current moment.

[0066] Among them, the grid charging time set by the user refers to the time period during which the energy storage system is pre-set to charge from the grid. The first wake-up interval time Δt1 is equal to the time interval between the current time and the grid charging time set by the user. After obtaining the current time and the grid charging time set by the user, the time interval between the two can be calculated, and this interval is the first wake-up interval time.

[0067] Exemplarily, if the user sets the grid charging time from 10:00 am to 3:00 pm and the current time is 8:00 am, then the first wake-up interval is 2 hours. In this way, the system can reasonably arrange the wake-up time in the preset target low-power mode according to the distance from the grid charging time, so as to make preparations in advance when approaching the charging time, ensure that the charging operation can be carried out in time, make full use of the low grid price period, and reduce the electricity cost.

[0068] Among them, the current PV power refers to the real-time power generated when the photovoltaic power generation system is connected to the energy storage system, which reflects the real-time state of photovoltaic power generation. The PV power can be monitored in real time through sensors or related circuits.

[0069] In one embodiment, the second wake-up interval is obtained according to the current PV power connected to the energy storage system at the current moment, as follows:

[0070] Judge whether the current PV power connected to the energy storage system at the current moment is greater than or equal to the start threshold;

[0071] If so, the second wake-up interval Δt2 is 0;

[0072] Otherwise, obtain the PV power stored when the energy storage system started running last time, denoted as the reference power; when the current PV power is less than or equal to the reference power, initialize the time interval Δt of the RTC timed wake-up 初始 As the second wake-up interval Δt2; when the current PV power is greater than the reference power, estimate the second wake-up interval Δt2 when the PV power connected to the energy storage system reaches the start threshold according to the change rate of the current PV power.

[0073] Among them, the above-mentioned initialized timed wake-up time interval is a fixed time period set in advance.

[0074] In one embodiment, estimating the second wake-up interval when the PV power connected to the energy storage system reaches the start threshold according to the change rate of the current PV power includes: estimating the change rate of the current PV power according to the reference power, the current PV power and the initialized RTC timed wake-up time interval: the change rate of the current PV power Rate = (P C -P ref ) / (Δt 初始 ); estimating the second wake-up interval Δt2 according to the start threshold, the current PV power and the change rate of the current PV power: Δt2 = (P o -P C ) / Rate.

[0075] In the above embodiment, P C is the current PV power, P ref is the reference power, Δt初始 Used to represent the time interval for initializing the RTC timed wake-up, P o Represents the start threshold. When obtaining the second wake-up interval Δt2, if the current PV power P C has already exceeded the set start threshold, directly set the second wake-up interval Δt2 to 0, which means that the energy storage system can be immediately started to enter the operating state. If the current PV power P C is relatively low and less than the start threshold, the energy storage system will calculate the change rate of the PV power based on the PV power data recorded during the previous system wake-up; then, based on the power change rate, and then based on the power change rate Rate, the start threshold, and the current PV power P C , to predict the time required for the PV to reach the start threshold, and this time is the second wake-up interval Δt2. By dynamically adjusting the wake-up interval in this way, the system can automatically estimate the second wake-up interval Δt2 when the PV power of the photovoltaic reaches the start threshold, and then reasonably plan when to enter the preset target low-power mode according to the second wake-up interval Δt2, so as to reasonably arrange the wake-up time in the low-power mode. Compared with the prior art, during the PV activation process, only whether the PV power is connected is considered, but whether the PV power reaches the required power for system startup is not considered. The above dynamic adjustment process of the present application avoids the problem of multiple frequent on-off operations caused by PV power wake-up, and saves the system energy consumption during multiple on-off operations.

[0076] 206. Control the energy storage system to enter the preset target low-power mode or the startup operation mode according to the first wake-up interval and the second wake-up interval.

[0077] In some embodiments, the above step 206 may include but is not limited to: taking the minimum value of the first wake-up interval Δt1 and the second wake-up interval Δt2 as the startup time interval for the energy storage system to start running at the current moment, and storing the startup time interval in the RTC counter of the energy storage system; when the RTC counter does not count up to the startup time, control the energy storage system to be in the preset target low-power mode; when the RTC counter counts up to the startup time, control the energy storage system to enter the startup operation mode.

[0078] After obtaining the first wake-up interval Δt1 and the second wake-up interval Δt2, the system will compare these two times. If the first wake-up interval Δt1 is shorter, it means that it is closer to the grid charging time set by the user. The system may give priority to waking up when approaching the charging time to perform the charging operation in a timely manner. At this time, the system may adjust the wake-up mechanism of the preset target low-power mode to ensure that it can wake up at the appropriate time and enter the startup operation mode for grid charging. If the second wake-up interval Δt2 is shorter, it indicates that the PV power is about to reach the startup threshold. The system will pay more attention to the PV power generation situation and make preparations in advance. When the PV power meets the conditions, it will quickly switch from the preset target low-power mode to the startup operation mode to charge using PV power generation.

[0079] In some embodiments, after taking the minimum value of the first wake-up interval and the second wake-up interval as the startup time interval of the energy storage system from the current moment and storing the startup time interval in the energy storage system, during the counting process of the RTC counter, when the energy storage system receives an externally input activation signal, it can control the energy storage system to enter the startup operation mode.

[0080] After taking the minimum value of the first wake-up interval and the second wake-up interval as the startup time interval and storing it in the energy storage system, it is allowed to control the startup operation of the energy storage system according to the externally activated signal during the counting of the RTC counter. This mechanism increases the flexibility of the system response, can respond to external demands in a timely manner, avoid delays in startup due to the preset time not yet reached, better meet the usage requirements in emergency or special situations, and improve the practicality and adaptability of the energy storage system.

[0081] 207. Obtain the third wake-up interval according to the current PV power.

[0082] When the system is in the non-peak shaving and valley filling mode, obtaining the third wake-up interval Δt3 is similar to obtaining the second wake-up interval Δt2 mentioned above, that is, the method of obtaining the third wake-up interval Δt3 is the same as the method of obtaining the second wake-up interval Δt2 according to the current PV power connected to the energy storage system at the current moment in step 205, which will not be elaborated here.

[0083] It should be noted that for steps 204 to 208, when the energy storage system is in the peak shaving and valley filling mode set by the user, it is necessary to consider the grid charging time and PV power situation set by the user to design the time when the energy storage system enters the preset low-power mode, that is, to control the time when the energy storage system enters the preset low-power mode according to the above-mentioned interval time Δt1 and interval time Δt2. When the energy storage system is not in the peak shaving and valley filling mode set by the user, only the PV power situation is considered to design the time when the energy storage system enters the preset low-power mode, that is, to control the time when the energy storage system enters the preset low-power mode according to the above-mentioned interval time Δt3.

[0084] 208. Control the energy storage system to enter the preset target low-power mode or start the operating mode according to the third wake-up interval time.

[0085] After obtaining the third wake-up interval time, the wake-up mechanism in the preset target low-power mode will be adjusted according to this time. If the third wake-up interval time is short, it means that the PV power can reach the start threshold quickly, and the system will make preparations in advance. When the PV power reaches the start threshold, the control device will send an instruction to the energy storage system to switch the system from the preset target low-power mode to the start operating mode and start charging using photovoltaic power generation. If the third wake-up interval time is long, the system will continue to maintain the preset target low-power mode to reduce standby power consumption, and at the same time continuously monitor the change of PV power and wait for the right time to perform the charging operation. Through this control method based on the third wake-up interval time, the system can reasonably plan when to enter the preset target low-power mode according to the third wake-up interval time in the non-peak shaving and valley filling mode. In this way, the wake-up time in the low-power mode can be reasonably arranged. Compared with the prior art, in the PV activation process, only whether the PV power is connected is considered, but whether the PV power reaches the required power for system startup is not considered. The above dynamic adjustment process of the present application avoids the problem of multiple frequent on-off operations caused by PV power wake-up and saves the system energy consumption during multiple on-off operations.

[0086] In some embodiments, the above step 208 may include but is not limited to: taking the third wake-up interval time as the start time interval between the current moment and the start of the operation of the energy storage system, and storing the start time interval in the RTC counter of the energy storage system. Among them, when the RTC counter does not count up to the start time, the energy storage system is controlled to be in the preset target low-power mode; when the RTC counter counts up to the start time, the energy storage system is controlled to enter the start operating mode.

[0087] In some embodiments, after using the third wake-up interval as the start-up time interval from the current moment when the energy storage system is about to start running and storing the start-up time interval in the RTC counter of the energy storage system, during the counting process of the RTC counter, when the energy storage system receives an externally input activation signal, the energy storage system can be controlled to enter the start-up operation mode.

[0088] After storing the third wake-up interval as the start-up time interval in the RTC counter as described above, if an external activation signal is received during the counting process, the energy storage system can be started. This setting method provides the system with a wake-up method, enabling the energy storage system to quickly respond to external instructions, break free from the limitation of the preset time, and start operations such as charging in a timely manner, improving the system's response ability to different scenarios and energy utilization efficiency.

[0089] In the above embodiments, through the time-division control and intelligent activation strategy, problems such as high standby loss, untimely response, and hardware damage caused by frequent switching on and off of the energy storage system are effectively solved. It can flexibly switch between the preset target low-power mode or the operation mode according to the time range, photovoltaic power, and user working mode, reducing standby loss, improving response speed and stability, and enhancing the overall performance of the energy storage system.

[0090] In an exemplary embodiment, Figure 3 is a schematic flowchart of the operation control method of the energy storage system corresponding to the second operation control mode in an embodiment. The execution subject of this method can be the operation control device of the energy storage system, such as Figure 3 as shown, this method includes the following steps 301 to step 308:

[0091] 301. Obtain the duration of the energy storage system in the standby working state.

[0092] 302. Determine whether the duration is greater than a preset static threshold.

[0093] 303. Determine the second target time range where the energy storage system is located.

[0094] For the above steps 301 to 303, reference can be made to the relevant descriptions of the above steps 101 to 103, which will not be elaborated here.

[0095] 304. Determine whether the system is in the peak shaving and valley filling mode set by the user.

[0096] In the embodiments of the present application, if it is in the peak shaving and valley filling mode, the following steps 305 and 306 are executed; if it is in the non-peak shaving and valley filling mode, the following steps 307 and 308 are executed.

[0097] It should be noted that in the second operation control mode, regardless of whether the energy storage system is in the peak shaving and valley filling mode or not, if an external activation signal is received during operation, the energy storage system can be controlled to enter the start-up operation mode. In this way, the energy storage system can quickly respond to external instructions, get rid of the limitation of the preset time, and start operations such as charging in a timely manner, improving the system's ability to respond to different scenarios and energy utilization efficiency.

[0098] 305. Obtain the fourth wake-up interval time according to the current time and the grid charging time set by the user.

[0099] In the embodiments of the present application, the fourth wake-up interval time is equal to the fourth wake-up time interval between the current time and the grid charging time set by the user. The method for obtaining the fourth wake-up interval time is similar to the method for obtaining the first wake-up interval time described in the related description of step 205 above, and will not be elaborated here.

[0100] 306. Control the energy storage system to enter the preset target low-power mode or the start-up operation mode according to the fourth wake-up interval time.

[0101] In some embodiments, the fourth wake-up interval time can be taken as the start-up time interval for the energy storage system to start running at the current moment, and the start-up time interval is stored in the RTC counter of the energy storage system; when the RTC counter does not count up to the start-up time, the energy storage system is controlled to be in the preset target low-power mode; when the RTC counter counts up to the start-up time, the energy storage system is controlled to enter the start-up operation mode.

[0102] Among them, taking the fourth wake-up interval time as the start-up time interval and storing it in the RTC counter provides a clear timing mechanism, enabling the system to accurately switch from the preset target low-power mode to the start-up operation mode according to the preset time. When the RTC counter does not count up to the start-up time, controlling the energy storage system to be in the preset target low-power mode can significantly reduce the power consumption of the system in the standby state and reduce unnecessary energy waste. When the RTC counter counts up to the start-up time, controlling the energy storage system to enter the start-up operation mode ensures that the system can respond in a timely manner at the appropriate time point, meet the power supply or other operation requirements, and improve the operation efficiency and stability of the system. This time-based control method makes the operation of the energy storage system more orderly and efficient, and can better adapt to different application scenarios.

[0103] In some embodiments, after taking the fourth wake-up interval time as the start-up time interval for the energy storage system to start running at the current moment and storing the start-up time interval in the RTC counter of the energy storage system, when the energy storage system obtains an externally input activation signal during the counting process of the RTC counter, the energy storage system can be controlled to enter the start-up operation mode.

[0104] The above control of the energy storage system to start and operate based on an external activation signal increases the flexibility of the system response, can respond to external demands in a timely manner, avoids delays in starting due to the preset time not yet arriving, better meets the usage requirements in emergency or special situations, and improves the practicality and adaptability of the energy storage system.

[0105] 307. Determine the fifth wake-up interval time according to the time distance between the current time and the first target time range.

[0106] Among them, the fifth wake-up interval time is equal to the time interval between the current time and the first target time range. After obtaining the current time and the grid charging time set by the user, the time interval between the two can be calculated, and this interval is the fifth wake-up interval time. Exemplarily, if the first target time range is from 5 am to 7 pm and the current time is 12 am, then the fifth wake-up interval time is 5 hours.

[0107] 308. Control the energy storage system to enter a preset target low-power mode or a first operation control mode according to the fifth wake-up interval time.

[0108] In some embodiments, take the fifth wake-up interval time as the time interval from the first target time range, and store it in the RTC counter of the energy storage system; when the RTC counter does not count up to the start time, control the energy storage system to be in the preset target low-power mode; when the RTC counter counts up to the start time, control the energy storage system to enter the first operation control mode.

[0109] Since the fifth wake-up interval time is equal to the time interval between the current time and the first target time range, when the RTC counter counts up to the start time, it means that the current time has entered the first target time range. At this time, after entering the first operation control mode, it will continue to execute the operation control method of the energy storage system in the embodiments of the present application based on Figure 2 the method flow shown therein.

[0110] In some embodiments, after taking the above fifth wake-up interval time as the time interval to enter the first operation control mode and storing the fifth wake-up interval time in the RTC counter of the energy storage system, during the counting process of the RTC counter, when the energy storage system obtains an external input activation signal, control the energy storage system to enter the start-up operation mode.

[0111] The above control of the energy storage system to start and operate based on an external activation signal increases the flexibility of the system response, can respond to external demands in a timely manner, avoids delays in starting due to the preset time not yet arriving, better meets the usage requirements in emergency or special situations, and improves the practicality and adaptability of the energy storage system.

[0112] For the operation control method of the above energy storage system, in the second operation control mode, different strategies are adopted according to whether the user sets the peak shaving and valley filling mode. If it is the peak shaving and valley filling mode, the fourth wake-up interval time is obtained based on the current time and the grid charging time to control the operation; if it is not the peak shaving and valley filling mode, the fifth wake-up interval time is used to control the entry into the preset target low-power mode or the first operation control mode. At the same time, the RTC counter is used to achieve time control, reduce standby power loss, and increase the system response flexibility in combination with the external activation signal. The operation strategy can also be dynamically optimized to improve the overall performance of the energy storage system.

[0113] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least a part of other steps or steps in other steps.

[0114] Based on the same inventive concept, the embodiment of the present application also provides an operation control device for an energy storage system for implementing the operation control method of the energy storage system involved above. The solution provided by this device to solve the problem is similar to the solution described in the above method. Therefore, the specific limitations in one or more embodiments of the operation control device for the energy storage system provided below can refer to the limitations on the operation control method of the energy storage system in the above text, and will not be repeated here.

[0115] In an exemplary embodiment, as Figure 4 shown, a structural block diagram of an operation control device for an energy storage system is provided, including:

[0116] A judgment module 401, configured to judge whether the continuous duration of the energy storage system in the standby working state is greater than a preset static threshold; if so, judge whether the energy storage system is in the first target time range or the second target time range of the location.

[0117] The operation control module 402 is used to perform a first operation control mode when in a first target time range: control the energy storage system to enter a preset target low-power consumption mode or start an operation mode according to the working mode set by the user and the PV power; perform a second operation control mode when in a second target time range: control the energy storage system to enter a preset target low-power consumption mode or start an operation mode according to the working mode set by the user; and detect in real time whether the energy storage system enters the first target time range.

[0118] In some embodiments, in the first operation control mode, the operation control module 402 is specifically configured to: determine whether the system is in the peak shaving and valley filling mode set by the user; if so, obtain a first wake-up interval time according to the current time and the grid charging time set by the user, obtain a second wake-up interval time according to the current PV power connected to the energy storage system at the current moment, and control the energy storage system to enter a preset target low-power consumption mode or start an operation mode according to the first wake-up interval time and the second wake-up interval time; if not, obtain a third wake-up interval time according to the current PV power, and control the energy storage system to enter a preset target low-power consumption mode according to the third wake-up interval time.

[0119] In some embodiments, the first target interval time includes the second wake-up interval time or the third wake-up interval time, and the operation control module 402 is specifically configured to: determine whether the current PV power connected to the energy storage system at the current moment is greater than the start threshold; if so, the first target interval time is 0;

[0120] Otherwise, obtain the PV power stored when the energy storage system started running last time, denoted as the reference power; when the current PV power is less than or equal to the reference power, use the time interval of the initialized RTC timed wake-up as the first target interval time; when the current PV power is greater than the reference power value, estimate the target interval time for the PV power connected to the energy storage system to reach the start threshold according to the change rate of the current PV power.

[0121] In some embodiments, the operation control module 402 is specifically configured to: estimate the change rate of the current PV power according to the reference power, the current PV power, and the time interval of the initialized RTC timed wake-up;

[0122] Estimate the first target interval time according to the start threshold, the current PV power, and the change rate of the current PV power.

[0123] In some embodiments, the operation control module 402 is specifically configured to: take the minimum value of the first wake-up interval and the second wake-up interval as the start time interval for the energy storage system to start running at the current moment, store the start time interval in the RTC counter of the energy storage system; when the RTC counter does not count up to the start time, control the energy storage system to be in the preset target low-power mode; when the RTC counter counts up to the start time, control the energy storage system to enter the start running mode.

[0124] In some embodiments, the operation control module 402 is specifically configured to: take the third wake-up interval as the start time interval for the energy storage system to start running at the current moment, store the start time interval in the RTC counter of the energy storage system; when the RTC counter does not count up to the start time, control the energy storage system to be in the preset target low-power mode; when the RTC counter counts up to the start time, control the energy storage system to enter the start running mode.

[0125] In some embodiments, in the second operation control mode, the operation control module 402 is specifically configured to: determine whether the system is in the peak shaving and valley filling mode set by the user; if so, obtain the fourth wake-up interval according to the current time and the grid charging time set by the user, and control the energy storage system to enter the preset target low-power mode or the start running mode according to the fourth wake-up interval; if not, determine the fifth wake-up interval according to the time distance between the current time and the first target time range; control the energy storage system to enter the preset target low-power mode or the first operation control mode according to the fifth wake-up interval.

[0126] In some embodiments, the first wake-up interval or the fourth wake-up interval is represented by a second target interval, and the second target interval is equal to the time interval between the current time and the grid charging time set by the user.

[0127] In some embodiments, the operation control module 402 is specifically configured to: take the fourth wake-up interval as the start time interval for the energy storage system to start running at the current moment, store the start time interval in the RTC counter of the energy storage system; when the RTC counter does not count up to the start time, control the energy storage system to be in the preset target low-power mode; when the RTC counter counts up to the start time, determine whether the current time is within the first target time range, if so, control the energy storage system to enter the preset target low-power mode or the start running mode according to the working mode set by the user and the PV power; if not, re-determine the fourth wake-up interval.

[0128] In some embodiments, a third target interval represents the third wake-up interval or the fourth wake-up interval. The operation control module 402 is specifically configured to:

[0129] Use the third target interval as the start time interval of the energy storage system from the current moment to startup operation, and store the start time interval in the RTC counter of the energy storage system;

[0130] When the count of the RTC counter has not reached the start time, control the energy storage system to be in the preset target low-power mode;

[0131] When the count of the RTC counter reaches the start time, control the energy storage system to enter the startup operation mode.

[0132] In some embodiments, the operation control module 402 is specifically configured to: in the first operation control mode and the second operation control mode, when the energy storage system receives an external activation signal, control the energy storage system to enter the startup operation mode.

[0133] Each module in the above operation control device of the energy storage system can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in the processing module in the computer device in hardware form or be independent of it, or can be stored in the storage module in the computer device in software form, so that the processing module can call and execute the operations corresponding to the above modules.

[0134] In an exemplary embodiment, an operation control device for an energy storage system is provided. The internal structure diagram of the device can be as Figure 5 shown. The device includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O), and a communication interface. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the operation control device of the energy storage system is used to store data. The input / output interface of the operation control device of the energy storage system is used for the processor to exchange information with external devices. The communication interface of the operation control device of the energy storage system is used for communication with an external terminal through a network connection. When the operation control device of the energy storage system is executed by the processor, it implements an operation control method for an energy storage system.

[0135] Those skilled in the art can understand, Figure 5The structure shown is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0136] In an exemplary embodiment, an operation control device for an energy storage system is provided, including: a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it implements the operation control method of the energy storage system as shown in the method embodiment.

[0137] In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processing module, it implements the operation control method of the energy storage system as shown in the method embodiment.

[0138] In an embodiment, a computer program product is provided, including a computer program. When the computer program is executed by a processing module, it implements the operation control method of the energy storage system as shown in the method embodiment.

[0139] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a storage module, database, or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile storage modules. The non-volatile storage module can include a read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage module, high-density embedded non-volatile storage module, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene storage module, etc. The volatile storage module can include a random access memory (RAM) or an external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as a static random access memory (SRAM) or a dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in this application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on blockchain, etc., without limitation. The processing modules involved in the embodiments provided in this application can be a general-purpose processing module, a central processing module, a graphics processing module, a digital signal processing module, a programmable logic module, a data processing logic module based on quantum computing, etc., without limitation.

[0140] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0141] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A method for operating and controlling an energy storage system, characterized in that, The method includes: judging whether the duration for which the energy storage system is in the standby working state is greater than a preset static threshold; if so, judging whether the energy storage system is in a first target time range or a second target time range of the location where it is located; when in the first target time range, performing a first operation control mode: controlling the energy storage system to enter a preset target low power consumption mode or start an operation mode according to the working mode set by the user and the PV power; when in the second target time range, performing a second operation control mode: controlling the energy storage system to enter a preset target low power consumption mode or start an operation mode according to the working mode set by the user; and detecting in real time whether the energy storage system enters the first target time range.

2. The method according to claim 1, characterized in that In the first operation control mode, the controlling the energy storage system to enter a preset target low power consumption mode or start an operation mode according to the working mode set by the user and the PV power includes: judging whether the system is in the peak shaving and valley filling mode set by the user; if so, obtaining a first wake-up interval time according to the current time and the grid charging time set by the user, obtaining a second wake-up interval time according to the current PV power accessed to the energy storage system at the current moment, and controlling the energy storage system to enter a preset target low power consumption mode or start an operation mode according to the first wake-up interval time and the second wake-up interval time; if not, obtaining a third wake-up interval time according to the current PV power, and controlling the energy storage system to enter a preset target low power consumption mode or start an operation mode according to the third wake-up interval time.

3. The method according to claim 2, wherein The first target interval time includes the second wake-up interval time or the third wake-up interval time. Obtaining the first target interval time according to the current PV power accessed to the energy storage system at the current moment includes: judging whether the current PV power accessed to the energy storage system at the current moment is greater than or equal to a start threshold; if so, the first target interval time is 0; otherwise, obtaining the PV power stored when the energy storage system started to operate last time, denoted as the reference power; when the current PV power is less than or equal to the reference power, taking the time interval of initializing the RTC timed wake-up as the first target interval time; when the current PV power is greater than the reference power, estimating the first target interval time for the PV power accessed to the energy storage system to reach the start threshold according to the change rate of the current PV power.

4. The method according to claim 3, characterized in that The estimating the first target interval time for the PV power accessed to the energy storage system to reach the start threshold according to the change rate of the current PV power includes: estimating the change rate of the current PV power according to the reference power, the current PV power and the time interval of initializing the RTC timed wake-up; estimating the first target interval time according to the start threshold, the current PV power and the change rate of the current PV power.

5. The method according to claim 2, characterized in that, The controlling the energy storage system to enter a preset target low power consumption mode or start an operation mode according to the first wake-up interval time and the second wake-up interval time includes: Take the minimum value of the first wake-up interval time and the second wake-up interval time as the start-up time interval for the energy storage system to start running at the current moment, and store the start-up time interval in the RTC counter of the energy storage system; When the RTC counter has not counted up to the start-up time, control the energy storage system to be in the preset target low-power mode; When the RTC counter has counted up to the start-up time, control the energy storage system to enter the start-up operation mode.

6. The method according to claim 1, wherein In the second operation control mode, controlling the energy storage system to enter the preset target low-power mode or the start-up operation mode according to the working mode set by the user includes: Judge whether the system is in the peak shaving and valley filling mode set by the user; If so, obtain the fourth wake-up interval time according to the current time and the grid charging time set by the user, and control the energy storage system to enter the preset target low-power mode or the start-up operation mode according to the fourth wake-up interval time; If not, determine the fifth wake-up interval time according to the time distance between the current time and the first target time range; control the energy storage system to enter the preset target low-power mode or the first operation control mode according to the fifth wake-up interval time.

7. The method according to claim 2 or 6, characterized in that, Use the second target interval time to represent the first wake-up interval time or the fourth wake-up interval time, and the second target interval time is equal to the time interval between the current time and the grid charging time set by the user.

8. The method according to claim 2 or 6, characterized in that, Use the third target interval time to represent the third wake-up interval time or the fourth wake-up interval time, and controlling the energy storage system to enter the preset target low-power mode or the start-up operation mode according to the third target interval time includes: Take the third target interval time as the start-up time interval for the energy storage system to start running at the current moment, and store the start-up time interval in the RTC counter of the energy storage system; When the RTC counter has not counted up to the start-up time, control the energy storage system to be in the preset target low-power mode; When the RTC counter has counted up to the start-up time, control the energy storage system to enter the start-up operation mode.

9. The method according to any one of claims 1 to 6, characterized in that In the first operation control mode and the second operation control mode, when the energy storage system receives an external activation signal, control the energy storage system to enter the start-up operation mode.

10. An operating control device for an energy storage system, characterized in that, It includes: A judgment module, used to judge whether the continuous duration of the energy storage system in the standby working state is greater than a preset static threshold; If so, judge whether the energy storage system is in the first target time range or the second target time range of the location; An operation control module, used to perform the first operation control mode when in the first target time range: control the energy storage system to enter the preset target low-power mode or the start-up operation mode according to the working mode set by the user and the PV power; When in the second target time range, perform the second operation control mode: control the energy storage system to enter the preset target low-power mode or the start-up operation mode according to the working mode set by the user; and detect in real time whether the energy storage system enters the first target time range.

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