A method for regulating a power storage system and a device associated therewith

Abstract

The application provides a regulation method for an energy storage system and a related device. The method comprises: obtaining environmental monitoring data of a first environment in which the energy storage system is currently located, battery cell temperature data of a battery cell in the energy storage system, and a set time of pre-charging and pre-discharging of the energy storage system, the set time comprising a start time; if a time difference between a current time and the set time meets a preset time difference requirement, determining harshness data corresponding to the first environment according to the environmental monitoring data and the battery cell temperature data; and sending a control signal to a battery management system according to the harshness data and the set time, so that the battery management system controls an environmental adjustment system to adopt a corresponding regulation strategy to regulate the first environment, and the first environment is changed into a preset second environment when the start time is about to arrive or has arrived.

Description

Technical Field

[0001] This application relates to the field of energy storage system technology, specifically to a control method for energy storage systems and related equipment. Background Technology

[0002] With the technological development and widespread application of energy storage systems, their operating efficiency and usage environment are receiving increasing attention. Due to their strong heat dissipation capabilities and good temperature consistency, liquid-cooled energy storage products are gaining a larger market share.

[0003] However, in related technologies, when liquid cooling equipment is used to regulate the temperature of energy storage systems, there is a risk that the energy storage system may malfunction if the regulation strategy used for the energy storage system is not set properly, thus preventing the energy storage system from charging and discharging normally and efficiently. Summary of the Invention

[0004] The embodiments of this application provide a control method and related equipment for an energy storage system, which aims to ensure that the energy storage system can work normally and improve the efficiency of charging and discharging of the energy storage system.

[0005] In a first aspect, embodiments of this application provide a control method for an energy storage system, the method comprising:

[0006] The system acquires environmental monitoring data of the current first environment in which the energy storage system is located, cell temperature data of the cells in the energy storage system, and the pre-charge and discharge setting time of the energy storage system, the setting time including the start-up time;

[0007] If the time difference between the current time and the set time meets the preset time difference requirement, then the severity data corresponding to the first environment is determined based on the environmental monitoring data and the cell temperature data.

[0008] Based on the severity data and the set time, a control signal is sent to the battery management system to control the environmental adjustment system to adopt a corresponding regulation strategy to regulate the first environment. When the start-up time is about to arrive or has arrived, the first environment is transformed into a preset second environment.

[0009] Secondly, embodiments of this application provide a computer device, the computer device comprising:

[0010] One or more processors;

[0011] Memory; and

[0012] One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the control method for the energy storage system.

[0013] Thirdly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to execute steps in a control method for an energy storage system.

[0014] Fourthly, embodiments of this application provide a computer program product, including a computer program / instructions, which, when executed by a processor, implement the steps of the control method for an energy storage system.

[0015] The beneficial effects of the embodiments of this application are as follows:

[0016] In the embodiments of this application, when the time difference between the current time and the preset pre-charge / discharge time of the energy storage system meets the preset time difference requirement, the environmental monitoring data of the first environment in which the energy storage system is currently located and the cell temperature data of the cells in the energy storage system are analyzed to determine the severity data corresponding to the first environment. Based on the severity data and the preset time, a control signal is sent to the battery management system to control the environmental adjustment system to adopt the corresponding regulation strategy to regulate the first environment. When the start-up time is about to arrive or has arrived, the first environment is transformed into a preset second environment to ensure that the energy storage system can work normally and improve the charging and discharging efficiency of the energy storage system. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an application environment for a control method for an energy storage system provided in an embodiment of this application;

[0019] Figure 2 This is a schematic flowchart of an embodiment of the control method for an energy storage system provided in this application;

[0020] Figure 3 This is a schematic diagram of an embodiment of the computer device provided in this application. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0022] In related technologies, when using liquid cooling equipment to regulate the temperature of energy storage systems, improper settings of the regulation strategy can easily lead to malfunctions, preventing the energy storage system from charging and discharging efficiently. Therefore, this application provides a regulation method and related equipment for energy storage systems. When the time difference between the current time and the preset pre-charge / discharge time of the energy storage system meets a preset time difference requirement, environmental monitoring data of the energy storage system under a first environment and cell temperature data of the battery cells in the energy storage system are analyzed to determine the severity of the first environment. Based on the severity data and the preset time, a control signal is sent to the battery management system. The battery management system then controls the environmental adjustment system to adopt a corresponding regulation strategy to regulate the first environment. When the start-up time is about to arrive or has arrived, the first environment is transformed into a preset second environment to ensure the energy storage system can operate normally and improve the charging and discharging efficiency of the energy storage system. For details, please refer to the following description.

[0023] It should be noted that, in the following text, the terms “battery module,” “battery,” “battery element,” “cell,” and “battery pack” are used interchangeably and can refer to any of the various rechargeable battery chemistry and constructions, including but not limited to lithium-ion (e.g., lithium-ion phosphate, lithium cobalt oxide, lithium iron phosphate, other lithium oxide metals, etc.), lithium-ion polymer, nickel metal hydride, nickel cadmium, nickel-metal hydride, nickel-zinc, silver-zinc, or other battery types / constructions.

[0024] To better understand the control method and related equipment for energy storage systems provided in the embodiments of this application, the application environment applicable to the embodiments of this application is described below.

[0025] Please see Figure 1 , Figure 1This diagram illustrates an application environment for a control method for an energy storage system provided in an embodiment of this application. As one implementation, the control method for an energy storage system provided in this embodiment can be applied to a computer device. The computer device can be, for example,... Figure 1 The server 110 shown can be connected to the terminal device 120 via a network. The network serves as a medium for providing a communication link between the server 110 and the terminal device 120. The network can include various connection types, such as wired communication links, wireless communication links, etc., and this embodiment does not limit this.

[0026] It should be understood that Figure 1 The server 110, network, and terminal device 120 shown are merely illustrative. Depending on implementation needs, any number of energy management systems, networks, and terminal devices can be included. It is understood that embodiments of this application may also allow multiple terminal devices 120 to access the server 110 simultaneously.

[0027] In some embodiments, server 110 may include an energy management system, and terminal device 120 may include a battery management system and other data acquisition devices. Terminal device 120 can acquire data, such as cell temperature data and environmental monitoring data, and send sensor data to server 110 via a network. After receiving the sensor data, server 110 can process the sensor data using the control method for energy storage systems in the embodiments of this application.

[0028] Next, we will introduce the control method for energy storage systems provided in the embodiments of this application.

[0029] In the embodiments of this application for the regulation method of an energy storage system, a computer device is used as the execution subject. For simplification and ease of description, this execution subject will be omitted in subsequent method embodiments. The method includes: acquiring environmental monitoring data of the first environment in which the energy storage system is currently located, cell temperature data of the cells in the energy storage system, and a pre-set pre-charge and discharge time of the energy storage system, wherein the set time includes a start time; if the time difference between the current time and the time to reach the set time meets a preset time difference requirement, then determining the severity data corresponding to the first environment based on the environmental monitoring data and the cell temperature data; sending a control signal to the battery management system based on the severity data and the set time, so as to control the environmental adjustment system to use a corresponding regulation strategy to regulate the first environment through the battery management system, and when the start time is about to be reached or has been reached, changing the first environment to a preset second environment.

[0030] The regulation method for energy storage systems described in this application will be described in detail below with reference to the accompanying drawings. Although this application provides method operation steps as shown in the following embodiments or drawings, the method may include more or fewer operation steps based on conventional or non-inventive methods. For steps where there is no logically necessary causal relationship, the execution order of these steps is not limited to the execution order provided in the embodiments of this application. In actual object processing or device execution, the method may be executed sequentially according to the embodiments or drawings, or in parallel (e.g., in a parallel processor or multi-threaded processing environment).

[0031] For details, please refer to Figure 2 , Figure 2 This is a schematic flowchart of an embodiment of the control method for an energy storage system provided in the embodiments of this application. The method specifically includes: steps 201 to 203.

[0032] 201. Obtain environmental monitoring data of the first environment in which the energy storage system is currently located, cell temperature data of the cells in the energy storage system, and the pre-charge and discharge setting time of the energy storage system, wherein the setting time includes the start-up time.

[0033] The first environment refers to the environment of the energy storage system before environmental regulation is carried out. For example, if the current weather is snowing, the first environment of the energy storage system is that the container of the energy storage system is covered with snow or frozen on all sides and the top, and the temperature reaches minus 40°C. The temperature of the battery cell is also minus 40°C.

[0034] Energy storage systems can include the following key components:

[0035] Batteries: Batteries are the core component of energy storage systems, responsible for storing and releasing energy. Common battery types include lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries.

[0036] Battery Management System (BMS): The BMS is responsible for monitoring and managing the battery's status, including parameters such as voltage, current, and temperature, to ensure battery safety and efficiency. It also sends the collected cell temperature data from the energy storage system to the energy management system.

[0037] Power Conversion System (PCS): A PCS controls the charging and discharging process of a battery, enabling the conversion and management of electrical energy. It typically includes an inverter and a rectifier, capable of AC-DC conversion.

[0038] Energy Management System (EMS): The EMS is responsible for the energy scheduling and management of the entire system, including data acquisition, network monitoring, and energy optimization.

[0039] Thermal management system: Used to control the temperature of the system and ensure its operation within a safe range. Common thermal management technologies include air cooling and liquid cooling.

[0040] Fire protection system: Used to prevent and control fires and ensure system safety.

[0041] Electrical components and mechanical supports: These include various electrical equipment and mechanical structures used to support the overall operation of the system.

[0042] Auxiliary equipment, such as transformers, cables, and containers, is used for system integration and connection.

[0043] These components are scientifically arranged and connected to form a complete energy storage system to achieve energy storage and release.

[0044] In addition, the energy storage system of this application may also include an environmental monitoring data acquisition system connected to the energy management system. The environmental monitoring data acquisition system includes an ambient temperature sensor and a pressure sensor installed on the container. The pressure sensor is configured to collect pressure sensing data generated by snow accumulation on the container, and the ambient temperature sensor is configured to collect ambient temperature data outside the container. The environmental monitoring data includes the pressure sensing data and the ambient temperature data. The environmental monitoring data acquisition system is configured to transmit the collected environmental monitoring data to the energy management system.

[0045] The number and placement of pressure sensors and ambient temperature sensors can be configured according to actual needs. For example, there can be one or more pressure sensors, which can be positioned at the top of the container exterior. A single pressure sensor can be placed in the central area of ​​the top of the container exterior, while multiple pressure sensors can be evenly spaced at different intervals along the top of the container exterior. Similarly, there can be one or more ambient temperature sensors.

[0046] In some implementations, when multiple pressure sensors are available, the method may further include: acquiring multiple initial pressure sensing data collected by each pressure sensor; and determining target pressure sensing data based on the multiple initial pressure sensing data, wherein the pressure sensing data has higher accuracy.

[0047] The process of determining the target pressure sensing data based on the initial pressure sensing data may include: identifying abnormal pressure sensing data from the initial pressure sensing data; removing the abnormal pressure sensing data to obtain processed pressure sensing data; and taking the average value of the processed pressure sensing data as the target pressure sensing data.

[0048] In some implementations, when multiple ambient temperature sensors are available, the method may further include: acquiring multiple initial ambient temperature sensors collected by each ambient temperature sensor; and determining a target ambient temperature sensor with higher accuracy based on the multiple initial ambient temperature sensors.

[0049] The process of determining the target ambient temperature sensor based on the initial ambient temperature sensor may include: identifying abnormal ambient temperature sensors among the initial ambient temperature sensors; removing the abnormal ambient temperature sensors to obtain processed ambient temperature sensors; and taking the average value of the processed ambient temperature sensors as the target ambient temperature sensor.

[0050] The pre-charge and pre-discharge settings for the energy storage system can be preset within the energy management system. Pre-charge and pre-discharge can include pre-charging and pre-discharging, corresponding to the charging and discharging processes of the energy storage system. Users can pre-set the start and stop times for both pre-charging and pre-discharging; therefore, the setting time can be a time period, including both start and stop times. The length of the setting time and the timing of setting the start and stop times can be customized according to user needs.

[0051] In one embodiment, to effectively ensure the effectiveness of the solution, the method further includes: if the pre-charge / discharge setting time is obtained, then the current time is obtained, and based on the start time in the current time and the setting time, it is determined whether to generate reminder data. The reminder data may include reminder content reminding the user that the interval is too short and to reset the start time; if the interval between the current time and the setting time is less than a preset interval threshold, then reminder data is generated, and the reminder data is used to remind the user that the interval is too short and to reset the start time.

[0052] In this embodiment of the application, the above-mentioned reminder method can provide a reasonable control time for the control process of the energy storage system.

[0053] 202. If the time difference between the current time and the set time meets the preset time difference requirement, then the severity data corresponding to the first environment is determined based on the environmental monitoring data and the cell temperature data.

[0054] To ensure that the energy storage system can operate normally when it is about to reach or has reached its start-up time, the preset time difference should provide sufficient adjustment time for the environmental adjustment system. The specific adjustment time depends on the adjustment capability of the environmental adjustment system and the environmental difference between the first and second environments. Therefore, the time difference requirement can be obtained based on actual experience or through simulation.

[0055] In some embodiments, the step of determining the severity data corresponding to the first environment based on the environmental monitoring data and the cell temperature data includes: obtaining a cell temperature reference threshold corresponding to the cell temperature data and an environmental monitoring reference threshold corresponding to the environmental monitoring data; classifying the severity level of the first environment based on a first comparison result between the cell temperature and the cell temperature reference threshold and a second comparison result between the environmental monitoring data and the corresponding environmental monitoring reference threshold, so as to determine the severity data corresponding to the first environment.

[0056] In some embodiments, before obtaining the cell temperature reference threshold corresponding to the cell temperature data and the environmental monitoring reference threshold corresponding to the environmental monitoring data, the method may further include: setting the cell temperature reference threshold corresponding to the cell temperature data and the environmental monitoring reference threshold corresponding to the environmental monitoring data; and storing the cell temperature reference threshold corresponding to the cell temperature data and the environmental monitoring reference threshold corresponding to the environmental monitoring data into a preset target storage object.

[0057] The target storage object can be configured according to actual needs, such as a database, a specified storage medium, or cloud storage.

[0058] The reference threshold for cell temperature corresponding to the cell temperature data and the reference threshold for environmental monitoring corresponding to the environmental monitoring data can be set according to the analysis results of the attributes of each system device and past usage experience. It should be noted that the reference threshold for cell temperature and the reference threshold for environmental monitoring can be a numerical range or a single value, and can be set according to actual needs.

[0059] The reference threshold for cell temperature corresponding to the cell temperature data and the reference threshold for environmental monitoring corresponding to the environmental monitoring data can be obtained by reading from the target storage object.

[0060] In some embodiments, the cell temperature reference threshold includes a first cell low temperature reference threshold, a second cell low temperature reference threshold, a third cell low temperature reference threshold, a fourth cell low temperature reference threshold, a fifth cell low temperature reference threshold, a sixth cell high temperature reference threshold, a seventh cell high temperature reference threshold, an eighth cell high temperature reference threshold, and a ninth cell high temperature reference threshold, and the environmental monitoring reference threshold includes a snow accumulation and freezing alarm threshold;

[0061] The step of classifying the severity level of the first environment based on a first comparison result between the cell temperature and a cell temperature reference threshold, and a second comparison result between the environmental monitoring data and the corresponding environmental monitoring reference threshold, includes:

[0062] If the environmental monitoring data is within the snow accumulation and freezing alarm threshold, then the severity data corresponding to the first environment is determined to be Level 1 Severity Level; wherein, the first environment corresponding to Level 1 Severity Level may be a situation where snow accumulates around and on the top of the container of the energy storage system (causing the container's ventilation openings to freeze) and the liquid medium in the liquid cooling equipment of the energy storage system solidifies, causing the energy storage system to be unable to start or work.

[0063] If the environmental monitoring data is not within the snow accumulation and freezing alarm threshold, and the cell temperature data is within the first cell low temperature reference threshold, then the severity data corresponding to the first environment is determined to be a level 2 severity level; the first environment corresponding to the second severity level may be that there is no snow accumulation and freezing around and on the top of the container of the energy storage system, but the liquid medium in the liquid cooling equipment of the energy storage system has solidified, causing the energy storage system to fail to start or work.

[0064] If the environmental monitoring data is not within the snow accumulation and freezing alarm threshold, and the cell temperature data is within the second cell low temperature reference threshold or the cell temperature data is within the ninth cell high temperature reference threshold, then the severity of the first environment is determined to be Level 3. The first environment corresponding to Level 3 severity is that the liquid medium in the liquid cooling device of the energy storage system has not solidified, but the difference between the cell temperature and the target temperature of the cell's operating range is very large, which still causes the energy storage system to fail to start or work.

[0065] If the environmental monitoring data is not within the snow accumulation and freezing alarm threshold, and the cell temperature data is within the third cell low temperature reference threshold or the cell temperature data is within the eighth cell high temperature reference threshold, then the severity of the first environment is determined to be Level 4. The first environment corresponding to Level 4 severity is that the liquid medium in the liquid cooling equipment of the energy storage system has not solidified, but the difference between the cell temperature and the target temperature of the cell's operating range is large, which still causes the energy storage system to fail to start or work.

[0066] If the environmental monitoring data is not within the snow accumulation and freezing alarm threshold, and the cell temperature data is within the fourth cell low temperature reference threshold or the cell temperature data is within the seventh cell high temperature reference threshold, then the severity level of the first environment is determined to be Level 5. The first environment corresponding to Level 5 severity is when the liquid medium in the liquid cooling equipment of the energy storage system has not solidified, and the cell temperature is within the target temperature of the cell's operating range, but the temperature difference from the suitable temperature of the cell is large.

[0067] If the environmental monitoring data is not within the snow accumulation and freezing alarm threshold, and the cell temperature data is within the fifth cell low-temperature reference threshold or the cell temperature data is within the sixth cell high-temperature reference threshold, then the severity level of the first environment is determined to be Level 6. The first environment corresponding to Level 6 severity is when the liquid medium in the liquid cooling equipment of the energy storage system has not solidified, and the cell temperature is within the target temperature range of the cell's operable operation, but has not yet reached the cell's optimal temperature.

[0068] In one specific embodiment, the low temperature reference threshold T1 of the first cell is (-∞, -40℃], the low temperature reference threshold T2 of the second cell is (-40℃, -20℃], the low temperature reference threshold T3 of the third cell is (-20℃, -10℃], the low temperature reference threshold T41 of the fourth cell is (-10℃, -0℃], the low temperature reference threshold T5 of the fifth cell is (0℃, 15℃], the high temperature reference threshold T6 of the sixth cell is [30℃, 35℃], the high temperature reference threshold T7 of the seventh cell is [35℃, 40℃], the high temperature reference threshold T8 of the eighth cell is [40℃, 55℃], and the high temperature reference threshold T9 of the ninth cell is [55℃, -∞).

[0069] The energy storage system includes a container and an environmental monitoring data acquisition system. The environmental monitoring data acquisition system is connected to the energy management system. The environmental monitoring data acquisition system includes an ambient temperature sensor and a pressure sensor installed on the container. The pressure sensor is configured to collect pressure sensing data generated by snow accumulation on the container. The ambient temperature sensor is configured to collect ambient temperature data outside the container. The environmental monitoring data includes the pressure sensing data and the ambient temperature data. The snow accumulation and freezing alarm threshold includes a pressure sensing alarm threshold and an ambient temperature alarm threshold. The step of determining the severity level of the first environment as Level 1 severity data if the environmental monitoring data is within the snow accumulation and freezing alarm threshold includes: if the pressure sensing reference threshold is within the pressure sensing alarm threshold and the ambient temperature data is within the ambient temperature alarm threshold, then the severity level of the first environment is determined to be Level 1 severity data.

[0070] The methods for obtaining and setting the thresholds of sensor parameters are similar; please refer to the previous section on other thresholds for details, which will not be repeated here.

[0071] 203. Based on the severity data and the set time, a control signal is sent to the battery management system to control the environmental adjustment system to use a corresponding regulation strategy to regulate the first environment. When the start-up time is about to arrive or has arrived, the first environment is changed to a preset second environment.

[0072] The second environment refers to the environment of the energy storage system after the first environment has been regulated by the environmental adjustment system. For example, if the first environment is snowy weather, the first environment in which the energy storage system is located is that there is snow or ice around and on the top of the container of the energy storage system, and the temperature reaches -40°C. The temperature of the battery cell is also -40°C. After the first environment has been regulated by the environmental adjustment system, the second environment is that the snow or ice around and on the top of the container has been removed, the temperature inside the container is above 0°C, and the temperature of the battery cell reaches 20°C.

[0073] In some embodiments, the step of sending a control signal to the battery management system based on the severity data and the set time, so as to control the environmental adjustment system through the battery management system to adopt a corresponding regulation strategy to regulate the first environment, and to change the first environment to a preset second environment when the start-up time is about to arrive or has arrived, includes: obtaining the current time; subtracting the start-up time from the current time to obtain a time difference value; determining a corresponding regulation strategy based on the time difference value and the severity data; and sending a control signal based on the regulation strategy to the battery management system, so as to control the environmental adjustment system through the battery management system to adopt a corresponding regulation strategy to regulate the first environment, and to change the first environment to a preset second environment when the start-up time is about to arrive or has arrived.

[0074] The severity data includes a first-level severity level, a second-level severity level, a third-level severity level, a fourth-level severity level, a fifth-level severity level, and a sixth-level severity level. The environmental adjustment system includes snow removal and defrosting equipment, refrigeration equipment, and liquid cooling equipment. The liquid cooling equipment is configured to heat or cool the battery cell.

[0075] In some embodiments, the step of determining the corresponding control strategy based on the time difference and the severity data includes: obtaining a time difference threshold corresponding to the time difference, wherein the time difference threshold includes a first time difference threshold, a second time difference threshold, a third time difference threshold, a fourth time difference threshold, a fifth time difference threshold, and a sixth time difference threshold;

[0076] If the time difference is within the first time difference threshold and the severity data is at level one severity, a corresponding first control strategy is determined. The first control strategy is to activate the snow removal and defrosting function of the snow removal and defrosting equipment. The snow removal and defrosting equipment is configured to remove snow from the air inlet of the liquid cooling equipment and defrost the liquid cooling equipment. The power supply for the snow removal and defrosting equipment can be mains power or other backup power, not the energy storage system. Furthermore, the power supply for the equipment in the environmental adjustment system can be mains power, other backup power, or the energy storage system itself. However, it should be noted that the energy storage system can only supply power to the environmental adjustment system when the environment in which the energy storage system is located is a preset suitable target environment. The defrosting device can be a resistor, which can be placed in the area of ​​the container that needs to be defrosted, such as near the air outlet or on the surface of the battery cells.

[0077] If the time difference is within the second time difference threshold and the severity data is at level two severity, then a corresponding second control strategy is determined. The second control strategy is to activate the defrosting function of the snow removal and defrosting equipment or to activate the refrigeration function of the refrigeration equipment.

[0078] If the time difference is within the third time difference threshold and the severity data is at level three severity, then a corresponding third control strategy is determined, wherein the third control strategy is to enable the heating function of the liquid cooling device or enable the heat dissipation function of the liquid cooling device.

[0079] If the time difference is within the fourth time difference threshold and the severity data is at level four severity, then the corresponding fourth control strategy is determined, and the fourth control strategy is to turn on the heating function of the liquid cooling device or turn on the heat dissipation function of the liquid cooling device.

[0080] If the time difference is within the fifth time difference threshold and the severity data is at level five severity, then the corresponding fifth control strategy is determined, and the fifth control strategy is to enable the heating function of the liquid cooling device or enable the heat dissipation function of the liquid cooling device.

[0081] If the time difference is within the sixth time difference threshold and the severity data is at level six severity, then the corresponding sixth control strategy is determined, which is to enable the heating function of the liquid cooling device or enable the heat dissipation function of the liquid cooling device.

[0082] In some embodiments, in addition to using liquid cooling equipment for heat dissipation, a phase change material can also be disposed on the surface of the battery cell, and the battery cell can be cooled by the phase change material and the liquid cooling equipment together.

[0083] It should be noted that each level of control strategy includes both heating and cooling strategies. The choice of which strategy to use depends on the ambient temperature and the cell temperature. When both temperatures are higher than the cell's suitable target temperature range, the cooling strategy is selected. When both temperatures are lower than the cell's suitable target temperature range, the heating strategy is selected.

[0084] In some embodiments, before obtaining the time difference threshold corresponding to the time difference value, the method may further include: setting the time difference threshold corresponding to the time difference value; and storing the time difference threshold corresponding to the time difference value in a preset target storage object.

[0085] The target storage object can be configured according to actual needs, such as a database, a specified storage medium, or cloud storage.

[0086] The time difference threshold corresponding to the time difference value can be set according to the analysis results of the attributes of each system device and past usage experience. It should be noted that the time difference threshold can be a numerical range or a single value, and should be set according to actual needs.

[0087] The time difference threshold corresponding to the time difference value can be obtained by reading it from the target storage object.

[0088] In one specific implementation, the time difference threshold includes a first time difference threshold, a second time difference threshold, a third time difference threshold, a fourth time difference threshold, a fifth time difference threshold, and a sixth time difference threshold.

[0089] In one specific embodiment, the first time difference threshold t1 is [3h, +∞), the second time difference threshold t2 is [2.5h, 3h), the third time difference threshold t3 is [2h, 2.5h), the fourth time difference threshold t41 is [1.5h, 2h), the fifth time difference threshold t5 is [1h, 1.5h), and the sixth time difference threshold t6 is [0.5h, 1h).

[0090] The beneficial effects of this application are:

[0091] In this embodiment, when the time difference between the current time and the preset pre-charge / discharge time of the energy storage system meets the preset time difference requirement, the environmental monitoring data of the energy storage system under the current first environment and the cell temperature data of the cells in the energy storage system are analyzed to determine the severity data of the first environment. Based on the severity data and the preset time, a control signal is sent to the battery management system to control the environmental adjustment system to adopt the corresponding regulation strategy to regulate the first environment. When the start-up time is about to arrive or has arrived, the first environment is changed to the preset second environment to ensure that the energy storage system can work normally and improve the charging and discharging efficiency of the energy storage system.

[0092] In some embodiments, the environmental adjustment system includes a fan, and the method further includes: acquiring the ambient temperature data within the set time period; if the ambient temperature data meets preset control conditions, then starting the fan through the battery management system, wherein the fan is configured to blow external cold air into the battery cell for heat dissipation.

[0093] The control condition can be an ambient temperature below 10℃.

[0094] In this embodiment, by introducing a fan when the ambient temperature data meets the preset control conditions, the fan can dissipate heat from the battery cell, thereby effectively saving energy.

[0095] Based on the same inventive concept, this application also provides a computer device, which can be a server or a terminal device. The computer device includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps of the above-described control method. This enables various functions, such as:

[0096] The system acquires environmental monitoring data of the current first environment of the energy storage system, cell temperature data of the cells in the energy storage system, and a pre-set pre-charge / discharge time, including a start-up time. If the time difference between the current time and the set time meets a preset time difference requirement, the system determines the severity data corresponding to the first environment based on the environmental monitoring data and the cell temperature data. Based on the severity data and the set time, the system sends a control signal to the battery management system to control the environmental adjustment system to adopt a corresponding regulation strategy to regulate the first environment. When the start-up time is about to arrive or has arrived, the first environment is transformed into a preset second environment.

[0097] The scheme adopted in the application embodiment analyzes the environmental monitoring data of the first environment in which the energy storage system is currently located and the cell temperature data of the cells in the energy storage system when the time difference between the current time and the preset pre-charge / discharge time of the energy storage system meets the preset time difference requirement. This determines the severity data corresponding to the first environment. Based on the severity data and the preset time, a control signal is sent to the battery management system. The battery management system controls the environmental adjustment system to adopt the corresponding regulation strategy to regulate the first environment. When the start-up time is about to arrive or has arrived, the first environment is changed to the preset second environment to ensure that the energy storage system can work normally and improve the charging and discharging efficiency of the energy storage system.

[0098] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0099] In one embodiment, taking a terminal device as an example, its internal structure diagram can be as follows: Figure 3As shown, the computer device includes a processor, memory, input / output interfaces, a communication interface, a display unit, and an input device. The processor, memory, and input / output interfaces are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The input / output interfaces are used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a control method. The display unit of the computer device is used to form a visually visible image. It can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be an LCD screen or an e-ink screen. The input device of the computer device can be a touch layer covering the display screen, or buttons, trackballs, or touchpads set on the casing of the computer device, or external keyboards, touchpads, or mice, etc.

[0100] Those skilled in the art will understand that Figure 3 The structure shown is only a block diagram of a part of the structure related to the present application and does not constitute a limitation on the computer device on which the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0101] Based on the same inventive concept, embodiments of this application also provide a computer-readable storage medium, which may include: read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc.

[0102] Since the computer program stored in the computer-readable storage medium can execute any of the control methods provided in the embodiments of this application, it can achieve the beneficial effects that any of the control methods provided in the embodiments of this application can achieve, as detailed in the preceding embodiments, and will not be repeated here.

[0103] Based on the same inventive concept, embodiments of this application also provide a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the methods provided in the various optional implementations of the above embodiments.

[0104] It should be noted that the object data (including but not limited to user device information, user personal information, etc.) and dialogue data involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of related data must comply with the relevant laws, regulations and standards of relevant countries and regions. Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods.

[0105] Any reference to memory, database, or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0106] The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based control method logic devices, etc., but are not limited to these.

[0107] In the above embodiments of the control method, computer-readable storage medium, computer device, and computer program product, the descriptions of each embodiment have different focuses. Parts not described in detail in a particular embodiment can be referred to in the relevant descriptions of other embodiments. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes and beneficial effects of the control method, computer-readable storage medium, computer program product, computer device, and their corresponding units described above can be referred to the description of the control method in the above embodiments, and will not be repeated here.

[0108] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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, they should be considered to be within the scope of this specification.

[0109] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A control method for an energy storage system, characterized in that, The method includes: The system acquires environmental monitoring data of the current first environment in which the energy storage system is located, cell temperature data of the cells in the energy storage system, and the pre-charge and discharge setting time of the energy storage system, the setting time including the start-up time; If the time difference between the current time and the set time meets the preset time difference requirement, then the severity data corresponding to the first environment is determined based on the environmental monitoring data and the cell temperature data. Based on the severity data and the set time, a control signal is sent to the battery management system to control the environmental adjustment system to use a corresponding regulation strategy to regulate the first environment. When the start-up time is about to arrive or has arrived, the first environment is changed to a preset second environment. Each level of regulation strategy includes a heating strategy and a cooling strategy. When the ambient temperature and the cell temperature are higher than the target temperature range, the cooling strategy is selected, and when the ambient temperature and the cell temperature are lower than the target temperature range, the heating strategy is selected. The control strategy is determined based on the time difference and the severity data. The time difference is determined based on the start time and the current time. The severity data includes a first-level severity level. The environmental adjustment system includes snow removal and thawing equipment. Specifically, the time difference threshold corresponding to the time difference value is obtained, and the time difference threshold includes a first time difference threshold; if the time difference value is within the first time difference threshold and the severity data is at level one severity level, then a corresponding first control strategy is determined, and the first control strategy is to enable the snow removal and defrosting function of the snow removal and defrosting equipment, and the snow removal and defrosting equipment is configured to remove snow from the air inlet of the liquid cooling equipment and defrost the liquid cooling equipment; The time difference threshold includes a second time difference threshold; the environmental adjustment system also includes a refrigeration device; if the time difference value is within the second time difference threshold and the severity data is at level two severity, then a corresponding second control strategy is determined, the second control strategy being to activate the defrosting function of the snow removal and defrosting or to activate the refrigeration function of the refrigeration device.

2. The control method for an energy storage system according to claim 1, characterized in that, The step of determining the severity data corresponding to the first environment based on the environmental monitoring data and the cell temperature data includes: Obtain the cell temperature reference threshold corresponding to the cell temperature data and the environmental monitoring reference threshold corresponding to the environmental monitoring data; Based on the first comparison result between the cell temperature and the cell temperature reference threshold, and the second comparison result between the environmental monitoring data and the corresponding environmental monitoring reference threshold, the severity level of the first environment is divided to determine the severity data corresponding to the first environment.

3. The regulation method for an energy storage system according to claim 2, characterized in that, The cell temperature reference thresholds include a first cell low temperature reference threshold, a second cell low temperature reference threshold, a third cell low temperature reference threshold, a fourth cell low temperature reference threshold, a fifth cell low temperature reference threshold, a sixth cell high temperature reference threshold, a seventh cell high temperature reference threshold, an eighth cell high temperature reference threshold, and a ninth cell high temperature reference threshold. The environmental monitoring reference thresholds include a snow accumulation and freezing alarm threshold. The step of classifying the severity level of the first environment based on a first comparison result between the cell temperature and a cell temperature reference threshold, and a second comparison result between the environmental monitoring data and the corresponding environmental monitoring reference threshold, includes: If the environmental monitoring data is within the snow accumulation and freezing alarm threshold, then the severity of the first environment is determined to be at level one. If the environmental monitoring data is not within the snow accumulation and freezing alarm threshold, and the battery cell temperature data is within the first battery cell low temperature reference threshold, then the severity of the first environment is determined to be at level two. If the environmental monitoring data is not within the snow accumulation and freezing alarm threshold, and the cell temperature data is within the second cell low temperature reference threshold or the cell temperature data is within the ninth cell high temperature reference threshold, then the severity of the first environment is determined to be a level three severity level. If the environmental monitoring data is not within the snow accumulation and freezing alarm threshold, and the cell temperature data is within the third cell low temperature reference threshold or the cell temperature data is within the eighth cell high temperature reference threshold, then the severity data corresponding to the first environment is determined to be a level four severity level. If the environmental monitoring data is not within the snow accumulation and freezing alarm threshold, and the cell temperature data is within the fourth cell low temperature reference threshold or the cell temperature data is within the seventh cell high temperature reference threshold, then the severity of the first environment is determined to be a level 5 severity. If the environmental monitoring data is not within the snow accumulation and freezing alarm threshold, and the cell temperature data is within the fifth cell low temperature reference threshold or the cell temperature data is within the sixth cell high temperature reference threshold, then the severity level data corresponding to the first environment is determined to be a level six severity level.

4. The control method for an energy storage system according to claim 3, characterized in that, The energy storage system includes a container and an environmental monitoring data acquisition system. The environmental monitoring data acquisition system is connected to the energy management system. The environmental monitoring data acquisition system includes an ambient temperature sensor and a pressure sensor installed on the container. The pressure sensor is configured to collect pressure sensing data generated by snow accumulation on the container. The ambient temperature sensor is configured to collect ambient temperature data outside the container. The environmental monitoring data includes the pressure sensing data and the ambient temperature data. The snow accumulation and freezing alarm threshold includes a pressure sensing alarm threshold and an ambient temperature alarm threshold. The step of determining the severity level of the first environment as Level 1 severity if the environmental monitoring data is within the snow and ice alarm threshold includes: If the pressure sensing reference threshold is within the pressure sensing alarm threshold and the ambient temperature data is within the ambient temperature alarm threshold, then the severity data corresponding to the first environment is determined to be a first-level severity level.

5. The control method for an energy storage system according to claim 4, characterized in that, The environmental conditioning system includes a fan, and the method further includes: Acquire the ambient temperature data within the set time period; If the ambient temperature data meets the preset control conditions, the fan is activated through the battery management system. The fan is configured to blow external cold air into the battery cell for heat dissipation.

6. The control method for an energy storage system according to claim 1, characterized in that, The step of sending a control signal to the battery management system based on the severity data and the set time, so as to control the environmental adjustment system through the battery management system to adjust the first environment using a corresponding regulation strategy, and to change the first environment to a preset second environment when the start-up time is about to arrive or has arrived, includes: Get the current time; The time difference is obtained by subtracting the startup time from the current time. Based on the time difference and the severity data, a corresponding control strategy is determined; The system sends a control signal based on the control strategy to the battery management system, so that the battery management system can control the environment adjustment system to adjust the first environment according to the corresponding control strategy, and when the start-up time is about to arrive or has arrived, the first environment is changed to a preset second environment.

7. The control method for an energy storage system according to claim 6, characterized in that, The severity data also includes a level 2 severity level, a level 3 severity level, a level 4 severity level, a level 5 severity level, and a level 6 severity level. The environmental adjustment system also includes a liquid cooling device, which is configured to heat or cool the battery cell. The step of determining the corresponding control strategy based on the time difference and the severity data includes: Obtain the time difference threshold corresponding to the time difference value, wherein the time difference threshold also includes a third time difference threshold, a fourth time difference threshold, a fifth time difference threshold, and a sixth time difference threshold; If the time difference is within the third time difference threshold and the severity data is at level three severity, then a corresponding third control strategy is determined, wherein the third control strategy is to enable the heating function of the liquid cooling device or enable the heat dissipation function of the liquid cooling device. If the time difference is within the fourth time difference threshold and the severity data is at level four severity, then the corresponding fourth control strategy is determined, and the fourth control strategy is to turn on the heating function of the liquid cooling device or turn on the heat dissipation function of the liquid cooling device. If the time difference is within the fifth time difference threshold and the severity data is at level five severity, then the corresponding fifth control strategy is determined, and the fifth control strategy is to enable the heating function of the liquid cooling device or enable the heat dissipation function of the liquid cooling device. If the time difference is within the sixth time difference threshold and the severity data is at level six severity, then the corresponding sixth control strategy is determined, which is to enable the heating function of the liquid cooling device or enable the heat dissipation function of the liquid cooling device.

8. A computer device, characterized in that, The computer device includes: One or more processors; Memory; and One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the control method for an energy storage system as described in any one of claims 1 to 7.

9. A computer-readable storage medium, characterized in that, It stores a computer program, which is loaded by a processor to execute the steps in the control method for an energy storage system according to any one of claims 1 to 7.

10. A computer program product, comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, they implement the steps of the control method for an energy storage system as described in any one of claims 1 to 7.

Images