Control method of energy storage system, energy storage system, power utilization device, and electronic device

Abstract

The present application relates to the technical field of energy storage, and discloses a control method of an energy storage system, the energy storage system, a power utilization device and an electronic device.In the present application, the energy storage system comprises a battery compartment, an environment sensor and an environment control device arranged in the battery compartment, and the method comprises the following steps: in the charging and discharging process of the energy storage system, a first environment parameter collected by the environment sensor is acquired; in the case that the first environment parameter exceeds a first environment parameter range, a second environment parameter collected by the environment control device and a battery management parameter of the energy storage system are acquired; the battery management parameter at least comprises one of a battery cell temperature and an insulation resistance value; in the case that the second environment parameter exceeds a second environment parameter range and the battery management parameter exceeds a normal battery management parameter range, the energy storage system is controlled to stop charging and discharging, so as to solve the problem that the energy storage system is unnecessarily stopped due to abnormal monitoring data of environment parameters in the related art.

Description

Technical Field

[0001] This invention relates to the field of energy storage technology, and in particular to a control method for an energy storage system, an energy storage system, electrical equipment, and electronic equipment. Background Technology

[0002] With the advancement of new power system construction, energy storage systems based on electrochemical batteries are widely used on the power supply side, grid side, and user side. Energy storage systems are typically deployed in the form of containers or cabins, with battery clusters and related electrical components centrally arranged inside the battery compartment. Environmental sensors are installed inside the battery compartment to collect environmental parameters. The energy storage system executes operational protection based on the monitoring data of environmental parameters, stopping charging and discharging when the monitoring data exceeds the limit.

[0003] In actual operation, the situation where the monitoring data of environmental parameters exceeds the limit does not completely correspond to the actual abnormal situation of the environment inside the battery compartment. When the monitoring data exceeds the limit but the environment inside the battery compartment is in a normal state, the energy storage system will also stop charging and discharging, resulting in unnecessary shutdowns. The charging and discharging process of the energy storage power station is frequently interrupted, and the availability and operating benefits of the energy storage system are affected. Summary of the Invention

[0004] The purpose of this invention is to provide a control method for an energy storage system, an energy storage system, electrical equipment, and electronic equipment to solve the problem of unnecessary shutdowns caused by abnormal monitoring data of environmental parameters in energy storage systems in related technologies.

[0005] To address the aforementioned technical problems, this invention provides a control method for an energy storage system. The energy storage system includes a battery compartment, an environmental sensor installed within the battery compartment, and an environmental control device. The method includes: during the charging and discharging process of the energy storage system, acquiring a first environmental parameter collected by the environmental sensor; if the first environmental parameter exceeds the range of the first environmental parameter, acquiring a second environmental parameter collected by the environmental control device and battery management parameters of the energy storage system; the battery management parameters include at least one of cell temperature and insulation resistance value; if the second environmental parameter exceeds the range of the second environmental parameter and the battery management parameters exceed the normal range of battery management parameters, controlling the energy storage system to stop charging and discharging.

[0006] The present invention also provides an energy storage system for performing the control method of the energy storage system described above.

[0007] The present invention also provides an electrical device, which includes the energy storage system described above.

[0008] The present invention also provides an electronic device connected to an energy storage system for executing the control method of the energy storage system described above.

[0009] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the control method of the energy storage system described above.

[0010] In this invention, after the first environmental parameter collected by the environmental sensor exceeds its range, a second environmental parameter and battery management parameters collected by the environmental control device are further acquired. This ensures that the shutdown protection is triggered based on the joint confirmation of evidence from multiple sources: the second environmental parameter is collected by a device different from the environmental sensor, and the cell temperature and insulation resistance values ​​are from the battery itself. When the environment inside the battery compartment is truly abnormal, the actual effect of the environment on the battery will be reflected in the cell temperature or insulation resistance value. When both the second environmental parameter and the battery management parameter exceed their respective ranges, it indicates that the environmental abnormality has been confirmed by evidence from different sources, and only then is the energy storage system controlled to stop charging and discharging. Thus, abnormal readings from the environmental sensor can be distinguished from actual environmental abnormalities inside the battery compartment. The energy storage system reduces unnecessary shutdowns while maintaining its shutdown protection function, ensuring the availability and operational benefits of the energy storage system. Attached Figure Description

[0011] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0012] Figure 1 This is a schematic diagram of the battery compartment structure of an energy storage system provided in one embodiment of the present invention; Figure 2 A flowchart illustrating a control method for an energy storage system according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of an electronic device provided in one embodiment of the present invention.

[0013] Figure label: Battery compartment-100, hatch-110, environmental sensor-200, environmental control equipment-300, ventilation device-400, energy storage converter-500, battery cluster-600, battery management system-700. Detailed Implementation

[0014] Energy storage systems are typically deployed in the form of containers or cabins, with battery clusters and related electrical components housed within a relatively enclosed battery compartment. The environmental conditions within the battery compartment, such as temperature and humidity, directly affect the operational safety of the battery cells: excessively high temperatures worsen heat dissipation, and excessively high humidity can even lead to condensation, forming a conductive water film on the surfaces of charged components and insulating media. Therefore, related technologies incorporate environmental sensors within the battery compartment to collect environmental parameters. When the monitored environmental parameters exceed certain limits, charging and discharging are stopped to isolate environmental risks.

[0015] The implicit assumption of the above protection logic is that the monitoring data from environmental sensors always accurately reflects the true environmental conditions within the battery compartment. When this assumption holds true, the out-of-limit shutdown mechanism can promptly isolate environmental risks.

[0016] However, analysis of the actual operating conditions of energy storage power stations revealed that environmental sensors are affected by factors such as condensation, zero-point drift, electromagnetic interference, and component aging during long-term operation, potentially causing their monitoring data to deviate from the actual environmental conditions inside the battery compartment. In such cases, if the monitoring data exceeds the limits while the environment inside the battery compartment remains normal, the shutdown protection will be triggered, interrupting the charging and discharging process of the energy storage system.

[0017] Further analysis revealed that simply adding similar environmental monitoring points and comparing them with each other cannot fundamentally solve the above problems. Similar monitoring points share similar acquisition principles, power supply and calibration processes, and failure mechanisms. Factors such as condensation and common-mode electromagnetic interference can simultaneously contaminate multiple similar monitoring points, causing the readings at each point to consistently deviate from the true value. Furthermore, comparisons between monitoring points can only answer whether the individual points are consistent, not whether an environmental anomaly has actually occurred. Weighting and fusing readings from multiple similar monitoring points into a single environmental value for environmental control only dilutes the error when a single point of inaccuracy occurs, failing to diagnose the inaccuracy itself.

[0018] The essence of the above problem lies in the fact that the evidence used to determine environmental anomalies is of the same origin and type as the environmental sensor being assessed, lacking independent evidence that does not share the same source of failure as the environmental sensor. Based on this, the present invention proposes the following implementation: after the environmental sensor reports exceeding limits, the data collection resources originally existing in the energy storage system for other purposes are reused as a reference for environmental verification. First, the second environmental parameter collected by the environmental control equipment within its own control closed loop is taken; this parameter belongs to the same type of physical quantity as the environmental sensor but comes from different devices and channels. Then, the existing cell temperature rise and insulation resistance values ​​from the battery management system are taken; these are physical quantities different from the environmental parameters and can reflect the battery's response characteristics after the environment acts on the battery itself. Only when the results of both of these verifications point to an anomaly is the charging and discharging of the energy storage system stopped. All data used for verification is taken from the existing equipment's data collection capabilities within the energy storage system, allowing implementation on the existing hardware foundation.

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention 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 the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] The "environmental sensor" referred to in this invention refers to a sensor device installed inside the battery compartment for collecting environmental parameters characterizing the environmental state inside the battery compartment, including but not limited to temperature and humidity sensors, temperature sensors, humidity sensors, dust concentration sensors, salt spray sensors, etc.

[0021] The "environmental control equipment" referred to in this invention refers to devices that regulate the environment inside the battery compartment and have the ability to collect environmental parameters, including but not limited to dehumidifiers, temperature control units, and fresh air filters with dust concentration detection functions. The data collection channels of the environmental control equipment originally serve its own control loop and belong to different devices, wiring, and calibration stages from environmental sensors. The environmental control equipment being located inside the battery compartment means that its environmental parameter collection points are located inside the battery compartment; the equipment itself can be located inside or outside the battery compartment. For example, the body of a fresh air unit or temperature control unit may be located outside the compartment, while its collection points are located inside the compartment via air ducts or pipelines.

[0022] In this invention, the "first environmental parameter" refers to the environmental parameter collected by the environmental sensor, and the "second environmental parameter" refers to the environmental parameter collected by the environmental control equipment. The types of environmental parameters include, but are not limited to, temperature, humidity, and dust concentration. The verification basis is the independent data collected by the environmental control equipment's built-in acquisition channel. The operating load and operating level of the environmental control equipment are responses to control commands. When the environmental control equipment is controlled by the readings of the environmental sensor, its operating load and the reading being verified are on the same control loop. Therefore, this invention uses the independent data collected by the environmental control equipment, rather than its operating load, as the verification basis.

[0023] In this invention, "battery management parameters" refer to parameters collected or maintained by the battery management system that characterize the operating state of the battery. Battery management parameters include at least one of cell temperature and insulation resistance value; that is, battery management parameters may include cell temperature, insulation resistance value, or both. They may also further include other parameters such as cell voltage and state of charge. Cell temperature corresponds to evidence of consequences of temperature-related environmental anomalies, while insulation resistance value corresponds to evidence of consequences of humidity-related environmental anomalies. Implementations that include both cell temperature and insulation resistance value can simultaneously cover the verification of both types of environmental anomalies and are therefore preferred implementations. The following examples are described using the configuration that includes both.

[0024] The "cell temperature" referred to in this invention is determined by the cell temperature measurement data of the battery management system. When a battery cluster comprises multiple cells, the cell temperature can be the highest value among the collected cell temperature values, the average value of the collected cell temperature values, or the temperature of each cell can be determined individually. The cell temperature is obtained based on the cell temperature measurement data of the battery management system itself, and its value is independent of the readings of environmental sensors, thus decoupling the second-level verification evidence from the environmental sensors being verified.

[0025] The "insulation resistance value" referred to in this invention is detected by the insulation monitoring unit of the battery management system. The detection object can be the entire DC circuit of the energy storage system or a single battery cluster. The insulation resistance value can be expressed in a voltage-normalized form, with units of Ω / V, that is, the ratio of insulation resistance to a reference voltage, such as the highest operating voltage of the energy storage system. The insulation resistance value can also be expressed as the absolute value of the insulation resistance. Insulation monitoring can employ conventional detection methods such as signal injection and bridge methods. This invention does not limit the specific implementation method of insulation monitoring.

[0026] The terms "first" and "second" used in this invention are only used to distinguish different objects and should not be construed as indicating or implying relative importance, or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0027] The control method, energy storage system, electrical equipment, and electronic equipment provided by the embodiments of the present invention can be applied to various energy storage scenarios with relatively enclosed battery compartments, such as containerized energy storage power stations, energy storage cabinets, and energy storage racks.

[0028] In a specific application scenario, refer to Figure 1 , Figure 1 This is a schematic diagram of the battery compartment structure of an energy storage system according to an embodiment of the present invention. The energy storage system includes a battery compartment 100, an environmental sensor 200 disposed within the battery compartment 100, and an environmental control device 300.

[0029] The battery compartment 100 is a sealable compartment with a door 110. The battery compartment 100 contains a battery cluster 600, which includes multiple battery modules, and each battery module includes multiple battery cells.

[0030] The energy storage system also includes a battery management system 700, which monitors parameters such as voltage, current, cell temperature, insulation resistance and state of charge of the battery cluster 600.

[0031] The energy storage system also includes an energy storage converter 500, which is electrically connected to the battery cluster 600 and is used to perform power conversion for charging and discharging. The energy storage converter 500 can be installed inside the battery compartment 100 or in an equipment compartment adjacent to the battery compartment 100.

[0032] The battery compartment 100 may also be equipped with a ventilation device 400, which is used for air exchange inside and outside the battery compartment 100.

[0033] exist Figure 1 In the example shown, the environmental sensor 200 is located in the top area of ​​the battery compartment 100, and the environmental control device 300 is located in the bottom area of ​​the battery compartment 100.

[0034] The control method of the energy storage system in the embodiments of the present invention can be executed by the controller of the energy storage system. The controller is, for example, a control unit in the energy management system or battery management system 700 of the energy storage system, or an independently set control unit. It can also be executed by an electronic device connected to the energy storage system.

[0035] In this embodiment of the invention, the energy storage system includes a battery compartment, environmental sensors and environmental control equipment disposed within the battery compartment, and the method includes: during the charging and discharging process of the energy storage system, acquiring a first environmental parameter collected by the environmental sensors; if the first environmental parameter exceeds the range of the first environmental parameter, acquiring a second environmental parameter collected by the environmental control equipment and battery management parameters of the energy storage system; the battery management parameters include at least one of cell temperature and insulation resistance value; if the second environmental parameter exceeds the range of the second environmental parameter and the battery management parameters exceed the normal range of battery management parameters, controlling the energy storage system to stop charging and discharging. By confirming the anomaly reported by the environmental sensors through two different sources of evidence, the abnormal readings of the environmental sensors are distinguished from the actual environmental anomalies within the battery compartment, and the energy storage system reduces unnecessary shutdowns while maintaining shutdown protection functions.

[0036] The implementation details of the control method of the energy storage system according to the embodiments of the present invention will be described in detail below. The following implementation details are provided for ease of understanding only and are not necessary for implementing this solution.

[0037] Reference Figure 2 , Figure 2 This is a flowchart of a control method for an energy storage system according to an embodiment of the present invention. The method includes steps S100 to S300.

[0038] Step S100: During the charging and discharging process of the energy storage system, acquire the first environmental parameters collected by the environmental sensor.

[0039] In a specific example, the environmental sensor 200 is a temperature and humidity sensor, and the first environmental parameters include the first temperature and the first humidity inside the battery compartment 100. The controller periodically reads the output of the environmental sensor 200 according to a set acquisition period, which can be from 1 second to 60 seconds, for example, 1 second, 5 seconds, 10 seconds, 30 seconds or 60 seconds. The value of the acquisition period only needs to meet the timeliness requirements for monitoring changes in environmental conditions.

[0040] Therefore, the controller continuously monitors the environmental status inside the battery compartment 100 during charging and discharging. The first environmental parameter is used to initiate the subsequent false alarm identification process.

[0041] Step S200: If the first environmental parameter exceeds the range of the first environmental parameter, acquire the second environmental parameter collected by the environmental control device and the battery management parameter of the energy storage system; the battery management parameter includes at least one of the cell temperature and insulation resistance value.

[0042] In a specific example, the first environmental parameter range is the range of parameters that defines whether the environmental state within the battery compartment 100 is normal. When the first environmental parameter is within its range, the controller controls the energy storage system to maintain the current charging and discharging process and returns to step S100 to continue monitoring. When the first environmental parameter exceeds its range, the controller enters a verification process: acquiring the second environmental parameter collected by the environmental control device 300, and the battery management parameter provided by the battery management system 700.

[0043] It should be noted that the cell temperature and insulation resistance values ​​in this embodiment of the invention are not used to directly determine battery abnormalities, but rather to verify whether the environmental conditions indicated by the readings of the environmental sensor 200 actually occur. The physical basis for this is the unidirectional nature of cause and effect: when the ambient temperature inside the battery compartment 100 actually rises, the heat dissipation conditions of the cell deteriorate, and the cell temperature will inevitably rise. Therefore, if the cell temperature does not rise, the determination of high ambient temperature can be negated. When the environment inside the battery compartment 100 is truly humid, or even condensing, a conductive water film forms on the surface of the insulating medium, and the insulation resistance value decreases accordingly. Therefore, if the insulation resistance value does not decrease, the determination of high ambient humidity can be negated.

[0044] The embodiments of this invention utilize these two parameters precisely in the direction of falsification; an anomaly is only confirmed when neither of these two criteria can negate it. Temperature-related anomalies and humidity-related anomalies leave criteria on cell temperature and insulation resistance values, respectively. When battery management parameters include both cell temperature and insulation resistance values, the verification coverage of these two types of environmental anomalies is the most comprehensive. In scenarios where environmental risks are predominantly of a single type, battery management parameters can also include only one parameter corresponding to that risk type. For example, in dry areas where high temperature risk is predominant, cell temperature can be used; in scenarios where high humidity condensation risk is predominant, insulation resistance values ​​can be used.

[0045] Optionally, the first environmental parameter includes a first temperature and a first humidity, the range of which is defined by a first temperature threshold and a first humidity threshold; the second environmental parameter includes a second temperature and a second humidity, the range of which is defined by a second temperature threshold and a second humidity threshold; the first environmental parameter exceeding the first environmental parameter range includes: the first temperature being greater than or equal to the first temperature threshold, or the first humidity being greater than or equal to the first humidity threshold; the second environmental parameter exceeding the second environmental parameter range includes: the second temperature being greater than or equal to the second temperature threshold, or the second humidity being greater than or equal to the second humidity threshold. In other words, exceeding the limit for either temperature or humidity is considered as the corresponding environmental parameter exceeding the range, which helps avoid missing detections of a single risk type.

[0046] Optionally, both the first temperature threshold and the second temperature threshold can be selected within the range of 50°C to 60°C, for example, 50°C, 55°C or 60°C. As an example, both the first temperature threshold and the second temperature threshold are 55°C.

[0047] Optionally, both the first humidity threshold and the second humidity threshold can be selected within the range of 90%RH to 98%RH, such as 90%RH, 95%RH or 98%RH. As an example, both the first humidity threshold and the second humidity threshold are 95%RH.

[0048] The temperature threshold is set slightly below the upper limit of the ambient temperature that the battery cell can operate in, and the humidity threshold is set close to the high humidity level before condensation occurs, so that the review process is triggered early in the environmental risk process. The two thresholds can be the same value, or they can be different values ​​depending on the installation position of the environmental sensor 200 and the environmental control device 300. The configuration method of using different values ​​is described later in the implementation method of the first distance and the second distance. The specific value of the threshold can satisfy the aforementioned considerations, and this invention does not limit it.

[0049] In some embodiments, after the first environmental parameter exceeds the range of the first environmental parameter, the controller first waits for a set time and then re-collects the first environmental parameter. If the re-collected first environmental parameter still exceeds the range of the first environmental parameter, then the controller performs the action of acquiring the second environmental parameter and the battery management parameter.

[0050] Optionally, the waiting time can be set from 5 seconds to 60 seconds, for example, 5 seconds, 15 seconds, 30 seconds, or 60 seconds; 15 seconds is used as an example. This waiting period is only used to wait for the environmental sensor 200 to re-acquire data, and no other decision-making actions are performed during this period. The re-acquisition filters out transient disturbances such as single-sample glitches, making the triggering of the review process more stable.

[0051] Optionally, the time difference between the acquisition time of the second environmental parameter and the acquisition time of the first environmental parameter shall not exceed a preset time window, and the duration of the preset time window shall be less than twice the acquisition cycle of the environmental control device. Only when the two environmental readings are sufficiently close in time do they correspond to the environmental state within the battery compartment 100 at the same time period, and only then does the verification and comparison have physical meaning. By constraining the preset time window to within twice the acquisition cycle of the environmental control device 300, it is ensured that the second environmental parameter and the first environmental parameter are at most separated by one acquisition cycle, avoiding the use of expired readings for verification.

[0052] Optionally, the time difference between acquiring the battery management parameters and acquiring the second environmental parameters is greater than the set observation duration. There is a conduction time for abnormal environmental conditions to affect the battery itself. That is, after an environmental anomaly occurs, the cell temperature and insulation resistance values ​​will only show corresponding changes after a certain conduction time. The set observation duration allows time for the manifestation of consequential evidence; it can be from 10s to 300s, for example, 10s, 30s, 60s, 120s, or 300s. The specific value can be calibrated based on the thermal capacity and heat dissipation structure of the battery compartment 100, ensuring that the consequential parameters can respond sufficiently.

[0053] In some embodiments, before acquiring the second environmental parameters collected by the environmental control device 300, an access verification is performed on the credibility of the environmental control device 300 itself as the reviewer. The function of this verification is essentially a self-verification of the review evidence chain, which can be achieved in various ways, such as verification based on the self-consistency of operational effects, verification based on the self-test signal of the acquisition channel, and verification based on the consistency of historical data. This embodiment will be described using verification based on the self-consistency of operational effects as an example.

[0054] Before acquiring the second environmental parameters collected by the environmental control equipment and the battery management parameters of the energy storage system, the method further includes: acquiring the amount of humidity decrease collected by the environmental control equipment during a set operating period when it is in operation; and controlling the energy storage system to stop charging and discharging when the amount of humidity decrease is less than the humidity decrease threshold.

[0055] In a specific example, this implementation method applies to situations where the environmental control device 300 has a dehumidification function, such as a dehumidifier. When the dehumidifier is running, its dehumidification effect causes the collected humidity to show a downward trend. If, within a set operating time, the decrease in humidity collected by the dehumidifier is less than the humidity decrease threshold, it indicates that the reading of its humidity collection channel is inconsistent with its own operating effect, and the reading of the environmental control device 300 is not suitable as a basis for verification. In cases where the credibility of the verification party is questionable, this implementation method directly controls the energy storage system to stop charging and discharging.

[0056] Optionally, the humidity reduction threshold is determined by the volume of the battery compartment 100 and the rated dehumidification capacity of the environmental control device 300. The volume of the battery compartment 100 determines the baseline of the total amount of water vapor in the compartment, and the rated dehumidification capacity determines the amount of water vapor that can be removed per unit time. Together, they define the reasonable range of humidity reduction within the set operating time.

[0057] Optionally, the running time can be set from 1 minute to 30 minutes, for example, 1 minute, 5 minutes, 10 minutes or 30 minutes, as long as the dehumidification effect can be stably displayed on the humidity reading.

[0058] Therefore, this embodiment verifies the reviewer, namely the environmental control equipment, before the review is initiated in step S200, so that the credibility of the review basis itself is confirmed in advance, avoiding the loophole that the review conclusion will be distorted due to the failure of the reviewer itself. At the same time, if the credibility of the reviewer is questionable, the system is shut down as a backup, ensuring the overall security of the false alarm identification process.

[0059] In some embodiments, the number of environmental sensors is multiple; when the first environmental parameter exceeds the range of the first environmental parameter, acquiring the second environmental parameter collected by the environmental control device and the battery management parameter of the energy storage system includes: when the first environmental parameter collected by at least one of the multiple environmental sensors exceeds the range of the first environmental parameter, acquiring the second environmental parameter collected by the environmental control device and the battery management parameter of the energy storage system.

[0060] In a specific example, multiple environmental sensors 200 are evenly arranged in the top area of ​​the battery compartment 100, and each environmental sensor 200 collects a first environmental parameter at its location. If the first environmental parameter collected by any environmental sensor 200 exceeds the range of the first environmental parameter, the verification process begins.

[0061] Therefore, the trigger sensitivity and downstream computing stability under the multi-sensor configuration can be balanced, which is beneficial to shorten the response time to anomalies in the real environment while maintaining the ability to identify false alarms.

[0062] Optionally, the environmental sensor is a temperature and humidity sensor, and the environmental control device is a humidity control device. The humidity control device is a device that regulates the humidity inside the battery compartment 100, including but not limited to dehumidifiers, temperature control units with dehumidification functions, etc. The present invention does not limit the specific form of the humidity control device.

[0063] In some embodiments, the environmental control device 300 is a dehumidifier, and the second environmental parameter is taken from the air inlet side of the dehumidifier. The air inlet side reading is the state of the air drawn into the battery compartment 100 by the dehumidifier, which has not been changed by its own dehumidification function. Compared with the method of taking the data after the machine is stopped, taking the air inlet side reading does not require interrupting the dehumidification function.

[0064] As an alternative implementation, for dehumidifier models that only have a collection point on the air outlet side, the dehumidifier can be stopped while it is running. After a set stabilization period, the collected temperature and humidity can be obtained. The set stabilization period can be from 1 minute to 10 minutes, for example, 1 minute, 3 minutes, 5 minutes or 10 minutes, as long as the air condition on the air outlet side returns to the true air condition inside the battery compartment 100.

[0065] Optionally, in an embodiment where the environmental sensor 200 is a temperature and humidity sensor, the verification action can be carried out according to the type of parameter that exceeds the limit: if the first temperature exceeds a first temperature threshold, the focus is on verifying the cell temperature; if the first humidity exceeds a first humidity threshold, the focus is on verifying the insulation resistance value. The environmental temperature and cell temperature, and the environmental humidity and insulation resistance are linked one-to-one according to their consequences, making the chain of evidence more focused; both types of parameters can also be verified simultaneously, and this invention does not limit the order of verification.

[0066] Step S300: When the second environmental parameter exceeds the range of the second environmental parameter and the battery management parameter exceeds the range of the normal battery management parameter, control the energy storage system to stop charging and discharging.

[0067] In a specific example, the controller compares the second environmental parameter with its range and the cell temperature and insulation resistance value with the normal battery management parameter range. The cell temperature and insulation resistance values ​​can be detected simultaneously or sequentially. If the second environmental parameter exceeds its range, it indicates that a second environmental reading from a different source also points to an environmental anomaly. If the battery management parameter exceeds its normal battery management parameter range, it indicates that the environmental anomaly has already manifested at the battery level. When both levels of evidence are valid, the environmental anomaly is confirmed as having occurred. The controller then stops the energy storage system from charging and discharging. For example, it may issue a shutdown command to the energy storage converter 500 to stop the power conversion during charging and discharging. It can also further disconnect the main circuit contactor to isolate the battery cluster 600 from the external circuit.

[0068] Optionally, the normal range of battery management parameters is limited by temperature thresholds and insulation resistance thresholds. Battery management parameters exceeding the normal range include: cell temperature greater than or equal to the temperature threshold, or insulation resistance value less than the insulation resistance threshold. In other words, if either cell temperature or insulation resistance value exceeds its limit, it is considered that the battery management parameter has exceeded the normal range. These two parameters correspond to the respective consequence-side evidence channels for temperature-related anomalies and humidity-related anomalies, facilitating independent confirmation of the consequences for each type of environmental anomaly.

[0069] Optionally, the temperature threshold can be selected within the range of 40°C to 50°C, for example, 40°C, 45°C, or 50°C; as an example, the temperature threshold is 45°C. The insulation resistance threshold can be selected within the range of 500Ω / V to 2000Ω / V, for example, 500Ω / V, 1000Ω / V, 1500Ω / V, or 2000Ω / V; as an example, 1000Ω / V. The temperature threshold is set below the upper limit of the cell's safe temperature and leaves a margin, allowing the shutdown protection to activate before the cell reaches a dangerous temperature. The insulation resistance threshold is set above the lower limit of the insulation failure alarm, allowing humidity-related anomalies to be confirmed by consequential evidence before significant insulation degradation.

[0070] In some embodiments, when the second environmental parameter is within its range, or when the battery management parameter is within its normal range, the controller determines that the first environmental parameter is a false alarm and controls the energy storage system to continue charging and discharging. In this case, the anomaly reported by the environmental sensor 200 is not supported by data from different sources: either the second environmental reading shows no anomaly, or the environmental anomaly leaves no corresponding consequences on the battery side; both scenarios indicate that the environmental anomaly has not actually occurred. The energy storage system maintains the charging and discharging process, and the charging and discharging benefits are not interrupted by the anomaly of a single reading.

[0071] Optionally, within a set period, when the number of times the first environmental parameter is determined to be false alarm data reaches a threshold, the controller generates a maintenance prompt message for the environmental sensor 200. In a specific example, the threshold can be 2 to 10 times, for example, 2, 3, 5, or 10 times. The repeated occurrence of false alarms indicates the degradation of the environmental sensor 200 itself. The maintenance prompt enables maintenance personnel to replace or calibrate the environmental sensor 200 in a targeted manner, forming a closed loop from false alarm identification to hardware maintenance; the threshold value only needs to meet the sensitivity requirements for identifying sensor degradation.

[0072] In some embodiments, within a set takeover period after determining that the first environmental parameter is a false alarm, the controller uses the second environmental parameter collected by the environmental control device 300 as the basis for environmental protection of the battery compartment 100. If the environmental sensor 200 and the environmental control device 300 are installed at different heights, the second environmental parameter can be used after position correction, with the correction method referring to the following description of vertical humidity distribution. Therefore, the energy storage system retains its environmental monitoring capability even when the environmental sensor 200 is inaccurate, and the environmental protection function remains in place until the sensor is repaired.

[0073] Optionally, during the period from acquiring the second environmental parameter to completing the verification of the cell temperature and insulation resistance values, the controller controls the energy storage system to operate at a set power lower than the current charging and discharging power. Reducing the charging and discharging power during the verification period decreases the heat generation and electromagnetic disturbance of the battery itself, and also narrows the risk exposure of the energy storage system before the anomaly is confirmed. After the verification is completed, the power is restored or the system is shut down according to the verification conclusion; the set power value only needs to meet the safety margin requirements of the energy storage system during the verification period.

[0074] In another example, environmental sensor 200 is a dust concentration sensor, and environmental control device 300 is a fresh air filter with dust concentration detection function. The first environmental parameter is the dust concentration inside the battery compartment 100. During the charging and discharging process of the energy storage system, the dust concentration sensor collects the dust concentration inside the battery compartment 100. When the dust concentration is greater than or equal to the dust concentration threshold, i.e., the first environmental parameter exceeds the range of the first environmental parameter, the controller obtains the dust concentration detected by the fresh air filter on its air inlet side as the second environmental parameter, and obtains the cell temperature and insulation resistance values ​​provided by the battery management system 700. Dust-related environmental anomalies will also have consequences on the battery body side: dust accumulation blocks the heat dissipation air duct, causing poor cell heat dissipation and increased cell temperature; conductive dust deposits on the surface of the insulating medium, causing a decrease in insulation resistance. If the dust concentration detected by the fresh air filtration device also exceeds the limit, and the battery management parameters are outside the normal range of battery management parameters, the dust anomaly is confirmed as a real occurrence, and the controller stops the energy storage system from charging and discharging. If both levels of evidence are not simultaneously established, the reading of the dust concentration sensor is determined to be false alarm data, and the energy storage system continues to charge and discharge. It should be noted that the two-level verification structure of this invention is also applicable to various environmental parameters such as temperature, humidity, and dust concentration. It relies on the decoupling of the evidence source and the causal relationship on the consequence side, rather than being decoupled from the specific physical type of the environmental parameter.

[0075] In some embodiments, the specific method of controlling the energy storage system to stop charging and discharging in step S300 is further described. Before executing the shutdown, a physical constraint-based verification can be added to the shutdown decision. The function of this verification is essentially to verify whether the environmental readings are consistent with the physical state of the battery compartment 100. This can be achieved in various ways, such as verification based on water vapor conservation, verification based on heat source, verification based on phase change conditions, etc. This embodiment uses verification based on water vapor conservation as an example for explanation.

[0076] When the second environmental parameter exceeds the range of the second environmental parameter and the battery management parameter exceeds the range of the normal battery management parameter, the energy storage system is controlled to stop charging and discharging, including: when the second environmental parameter exceeds the range of the second environmental parameter and the battery management parameter exceeds the range of the normal battery management parameter, determining the water vapor content parameter of the battery compartment based on the first environmental parameter and obtaining the compartment status; when the water vapor content parameter is within the normal water vapor content range and the compartment status is sealed, the energy storage system is controlled to stop charging and discharging.

[0077] In a specific example, the water vapor content parameter is a parameter characterizing the absolute water vapor content in the air inside the battery compartment 100, such as dew point temperature, absolute humidity, or moisture content. Taking dew point temperature as an example, the dew point temperature can be obtained from the temperature and humidity in the first environmental parameter using conventional conversion methods such as the Magnus formula.

[0078] The battery compartment 100 is a relatively sealed chamber. When the door 110 is closed and the ventilation device 400 is off, the total amount of water vapor inside the battery compartment 100 remains constant. The absolute amount of water vapor in the air lacks a source for spontaneous increase, and the dew point temperature calculated from temperature and relative humidity also remains stable. An increase in relative humidity readings can only come from a decrease in temperature. Condensation on the probe surface of the environmental sensor 200 is a typical example of reading distortion: the water film causes the relative humidity reading to approach saturation, and the calculated dew point temperature abnormally approaches the air temperature, while the total water vapor in the compartment does not increase. In this case, the rate of increase in dew point temperature will significantly exceed the reasonable range under sealed conditions.

[0079] Correspondingly, if the water vapor content parameter is within the normal water vapor content range, it indicates that the environmental reading does not contradict the water vapor conservation constraint of the sealed chamber, and the evidence on which the shutdown decision is based is reliable; in this case, shutdown should be executed. If the water vapor content parameter exceeds the normal water vapor content range while the chamber is in a sealed state, it indicates that the reading contradicts the physical constraint, and the reliability of the reading is questionable. In this case, false alarm handling or re-collection and re-determination should be initiated. If the chamber is not in a sealed state, the water vapor conservation constraint does not hold, the verification in this implementation method is not applicable, and the controller can directly execute shutdown based on the conclusion of the two-level review.

[0080] Optionally, the water vapor content parameter is the rate of rise of the dew point temperature within the battery compartment, and the normal water vapor content range is limited by a dew point rise rate threshold. The water vapor content parameter falling within the normal water vapor content range includes cases where the rise rate is less than the dew point rise rate threshold. Using the rate of rise of the dew point temperature, rather than its absolute value, as the criterion allows the calibration to be independent of the humidity baseline levels in different seasons and regions, which is beneficial for maintaining consistent discrimination sensitivity under year-round operating conditions.

[0081] Optionally, the dew point rise rate threshold is determined by the volume of the battery compartment and the rated dehumidification capacity of the environmental control equipment. The volume of the battery compartment 100 determines the magnitude of the impact of a unit change in water vapor on the dew point, and the rated dehumidification capacity defines the magnitude of the rate of dew point change caused by the control action. Together, they define a reasonable upper limit for the dew point rise rate under sealed conditions. The specific value of the dew point rise rate threshold only needs to meet the definition requirements of this reasonable upper limit, and this invention does not impose any limitations on it.

[0082] Optionally, the energy storage system also includes a ventilation device; the compartment is in a sealed state, including: the battery compartment door is closed and the ventilation device is shut down. In a specific example, the state of the door 110 is obtained by a door status detection device such as a door magnetic switch or a limit switch, and the operating state of the ventilation device 400 is obtained by the controller's own control status record. In addition to the door 110 and the ventilation device 400, the determination of the sealed state can also be further combined with the state of other channels on the battery compartment 100, such as the pressure relief valve and the inspection port. When all channels are closed, it is determined to be a sealed state. This invention does not limit the range of channels covered by the sealed state.

[0083] Therefore, this implementation adds a physical constraint verification to the shutdown decision on top of the two-level verification: the water vapor conservation is guaranteed by the physical properties of the sealed chamber and is independent of the device status of the environmental sensor 200 and the environmental control equipment 300. Even if the two humidity measurement points are contaminated by common-mode factors such as condensation at the same time, the water vapor conservation verification can still identify the contradiction between the reading and the physical constraint, which is beneficial to maintaining the false alarm identification capability under common-mode failure conditions.

[0084] In some embodiments, the specific method of controlling the energy storage system to stop charging and discharging in step S300 is further described. All the aforementioned criteria are based on the premise that the readings are true measured values, and the readings may also be contaminated by electromagnetic interference during the acquisition and transmission process. Verification of the validity of the readings can be achieved in various ways, such as time alignment verification based on interference source operating conditions, verification based on signal chain quality indicators, etc. This embodiment uses time alignment verification based on energy storage converter operating conditions as an example for explanation.

[0085] The energy storage system also includes an energy storage converter; when the second environmental parameter exceeds the range of the second environmental parameter and the battery management parameter exceeds the range of the normal battery management parameter, the system is controlled to stop charging and discharging, including: when the second environmental parameter exceeds the range of the second environmental parameter and the battery management parameter exceeds the range of the normal battery management parameter, acquiring the power parameter of the energy storage converter at the time of acquiring the first environmental parameter; and when the power parameter is within the normal power range, controlling the energy storage system to stop charging and discharging.

[0086] In a specific example, the most powerful electromagnetic interference source within the battery compartment 100 is the energy storage converter 500, and its interference intensity on the signal chain of the environmental sensor 200 is related to its power variation. The key to this implementation lies in time alignment: the power parameter obtained corresponds to the time when the first environmental parameter is collected, thereby determining whether the collection time falls within a low-interference period. If the power parameter is within the normal power range, it indicates that the energy storage converter 500 is operating stably and electromagnetic interference is at a low level at the time the first environmental parameter was collected; the reading at this time is a valid measurement, and shutdown is performed. If the power parameter exceeds the normal power range, it indicates that the collection time is precisely during a period of strong interference with drastic power changes; the reading may be contaminated by interference, and the first environmental parameter can be re-collected after the operating conditions stabilize for further judgment.

[0087] Optionally, the power parameter is the power change rate of the energy storage converter, and the normal power range is limited by a power change rate threshold. The power parameter being within the normal power range includes situations where the power change rate is less than the power change rate threshold. The power change rate directly corresponds to the severity of switching device operation and current surges, and is a conditional quantity characterizing the intensity of electromagnetic interference. Using the power change rate instead of the absolute power value allows for verification independent of the load level of the energy storage system; stable high-power operation also falls under low-interference conditions. The power change rate threshold can be calibrated based on the rated power of the 500 energy storage converter, for example, taking a change per second on the order of a few percent to tens of percent of the rated power, to match the measured interference level.

[0088] Optionally, the period when the power change rate is less than the power change rate threshold is defined as the time after a set shielding duration, starting from the moment when the power change rate drops from being greater than or equal to the power change rate threshold to being less than the power change rate threshold. Electromagnetic interference has a trailing characteristic; even after the power change rate drops back below the power change rate threshold, the signal chain of the environmental sensor 200 still requires a recovery time. The set shielding duration allows for a recovery margin for the signal chain, which can be from 0.5s to 10s, for example, 0.5s, 1s, 2s, 5s, or 10s, sufficient to ensure sufficient attenuation of the transient response of the signal chain.

[0089] Therefore, this embodiment incorporates whether the reading was obtained under electromagnetic interference into the shutdown decision-making process, and uses the known operating condition data of the energy storage converter 500 itself to complete the verification. This helps to eliminate the impact of distorted readings during periods of strong interference on the shutdown decision and reduce unnecessary shutdowns caused by electromagnetic interference.

[0090] In some embodiments, the arrangement of environmental sensors and environmental control equipment, and the threshold configuration are further described. (Refer to...) Figure 1 An environmental sensor 200 is located in the top area of ​​the battery compartment 100, and an environmental control device 300 is located in the bottom area of ​​the battery compartment 100.

[0091] The first distance from the environmental sensor to the bottom of the battery compartment is greater than the second distance from the environmental control device to the bottom of the battery compartment; the difference between the first humidity threshold and the second humidity threshold is determined by the difference between the first distance and the second distance.

[0092] In a specific example, the humidity within the battery compartment 100 exhibits a gradient along the vertical direction: condensation and liquid water accumulate towards the bottom of the compartment under gravity, resulting in higher humidity near the bottom compared to the top. When the environmental sensor 200 and the environmental control device 300 are located at different heights, an inherent humidity difference corresponding to the height difference exists between their readings. If the same humidity threshold is applied to both locations, the normal humidity gradient might be interpreted as a contradiction between the two readings. The difference between the first and second humidity thresholds is determined by the difference between the first and second distances, effectively incorporating the inherent humidity difference corresponding to the height difference into the threshold configuration. For example, the difference can be determined by calibrating the humidity baseline difference per unit height difference based on measured data of the vertical humidity distribution within the battery compartment 100, and then combining this with the height difference between the two devices. The difference can range from 1%RH to 10%RH, for example, 1%RH, 3%RH, 5%RH, or 10%RH.

[0093] Therefore, the humidity threshold configuration takes into account the difference in the positions of the two measuring points, so that the comparison of the two environmental readings is based on the same benchmark, which helps to improve the accuracy of the first-level verification.

[0094] The steps described above are for clarity only. In practice, they can be combined into one step or some steps can be split into multiple steps. As long as they include the same logical relationship, they are all within the protection scope of this invention. Adding insignificant modifications or introducing insignificant designs to the algorithm or process, without changing the core design of the algorithm and process, are also within the protection scope of this invention.

[0095] Furthermore, the examples mentioned in the above embodiments can be freely combined, and any combination can be understood as an implementation method. The terms "implementation method" or "example" appearing in various locations in the specification do not necessarily refer to the same implementation method, nor are they independent or alternative implementation methods mutually exclusive with other implementation methods. Those skilled in the art will understand that the implementation methods described herein can be combined with other implementation methods.

[0096] In summary, specific embodiments of this subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions described in the claims can be performed in a different order and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result.

[0097] This invention also provides an energy storage system for executing the control methods for energy storage systems as described in the above embodiments. The energy storage system provided in this invention corresponds to the control methods described above, and the descriptions of these methods are also applicable to this energy storage system; therefore, they will not be repeated here.

[0098] Reference Figure 1 The energy storage system includes a battery compartment 100, an environmental sensor 200 and an environmental control device 300 installed in the battery compartment 100, and may also include a ventilation device 400, an energy storage converter 500, a battery cluster 600 and a battery management system 700. The arrangement and function of each component are described above.

[0099] Energy storage systems can take many forms, including but not limited to residential energy storage cabinets, commercial energy storage cabinets, energy storage containers, energy storage racks, energy storage power stations, energy storage battery packs, or portable energy storage systems. Energy storage systems may also include an Energy Management System (EMS), and control methods can be implemented by the EMS, battery management system 700, or a separately configured control unit.

[0100] This invention also provides an electrical device, which includes the energy storage system described above. The electrical device is a device that operates using electrical energy provided by the energy storage system, including but not limited to mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc., and can also be industrial or commercial loads connected to the energy storage system for power supply. Electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc. The electrical device provided in this invention corresponds to the energy storage system described above, and the description of the energy storage system also applies to this electrical device, and will not be repeated here.

[0101] This invention also provides an electronic device connected to an energy storage system for executing the control method of the energy storage system described above. This electronic device corresponds to the control method of the energy storage system described above, implementing the method by loading and running a computer program. The description of the method section also applies to this electronic device and will not be repeated here.

[0102] Reference Figure 3 , Figure 3 This is a schematic diagram of an electronic device according to an embodiment of the present invention. The electronic device includes at least one processor and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the control method of the energy storage system described above.

[0103] This invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the control method for the energy storage system described above. This storage medium corresponds to the control method for the energy storage system described above, and the computer program it carries implements the method when executed by a processor.

[0104] That is, those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. This program is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0105] The control method, energy storage system, electrical equipment, and electronic equipment provided in this invention can be widely applied to various energy storage scenarios on the power supply side, grid side, and user side. This invention reduces unnecessary downtime of the energy storage system, ensures the continuity of the charging and discharging process, and can meet the needs of long-term energy storage, achieving long-term energy storage of 4 hours or more. For example, it can be applied to energy storage scenarios of 5 hours, 6 hours, and 8 hours. Long-term energy storage refers to the ability to continuously discharge at rated power for 4 hours or even longer, or to achieve large-scale, low-cost energy storage for several days or months.

[0106] Through the control methods of the energy storage system provided by the above embodiments, the basis for judging environmental anomalies has been expanded from a single reading of the environmental sensor to independent readings from the acquisition channel of the environmental control equipment and the existing cell temperature and insulation resistance values ​​of the battery management system. The shutdown protection has been upgraded from a single over-limit trigger to a trigger after joint confirmation by evidence from multiple sources. All data used for verification are taken from the acquisition capabilities of the existing equipment in the energy storage system, and can be implemented on the basis of the original hardware.

[0107] Those skilled in the art will understand that the above embodiments are specific embodiments for implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A control method for an energy storage system, characterized in that, The energy storage system includes a battery compartment, environmental sensors and environmental control equipment installed within the battery compartment, and the method includes: During the charging and discharging process of the energy storage system, the first environmental parameter collected by the environmental sensor is acquired; If the first environmental parameter exceeds the range of the first environmental parameter, the second environmental parameter collected by the environmental control device and the battery management parameter of the energy storage system are acquired; the battery management parameter includes at least one of cell temperature and insulation resistance value. If the second environmental parameter exceeds the range of the second environmental parameter and the battery management parameter exceeds the range of the normal battery management parameter, the energy storage system is controlled to stop charging and discharging.

2. The control method for the energy storage system according to claim 1, characterized in that, The first environmental parameter includes a first temperature and a first humidity, and the range of the first environmental parameter is defined by a first temperature threshold and a first humidity threshold; the second environmental parameter includes a second temperature and a second humidity, and the range of the second environmental parameter is defined by a second temperature threshold and a second humidity threshold. The first environmental parameter exceeds the range of the first environmental parameter, including: the first temperature is greater than or equal to the first temperature threshold, or the first humidity is greater than or equal to the first humidity threshold; The second environmental parameter exceeds the range of the second environmental parameter, including: the second temperature is greater than or equal to the second temperature threshold, or the second humidity is greater than or equal to the second humidity threshold.

3. The control method for the energy storage system according to claim 1, characterized in that, The range of normal battery management parameters is limited by temperature threshold and insulation resistance threshold; The battery management parameters exceeding the normal battery management parameter range include: the cell temperature being greater than or equal to the temperature threshold, or the insulation resistance value being less than the insulation resistance threshold.

4. The control method for the energy storage system according to any one of claims 1 to 3, characterized in that, When the second environmental parameter exceeds the range of the second environmental parameter and the battery management parameter exceeds the normal battery management parameter range, controlling the energy storage system to stop charging and discharging includes: If the second environmental parameter exceeds the range of the second environmental parameter and the battery management parameter exceeds the range of the normal battery management parameter, the water vapor content parameter of the battery compartment is determined according to the first environmental parameter, and the compartment status of the battery compartment is obtained. When the water vapor content parameter is within the normal water vapor content range and the cabin is in a sealed state, the energy storage system is controlled to stop charging and discharging.

5. The control method for the energy storage system according to claim 4, characterized in that, The energy storage system also includes a ventilation device; The cabin is in a sealed state, including: the door of the battery compartment is closed and the ventilation device is shut down.

6. The control method for the energy storage system according to any one of claims 1 to 3, characterized in that, The energy storage system also includes an energy storage converter; When the second environmental parameter exceeds the range of the second environmental parameter and the battery management parameter exceeds the normal battery management parameter range, controlling the energy storage system to stop charging and discharging includes: If the second environmental parameter exceeds the range of the second environmental parameter and the battery management parameter exceeds the range of the normal battery management parameter, the power parameter of the energy storage converter at the time of collecting the first environmental parameter is obtained. When the power parameters are within the normal power range, the energy storage system is controlled to stop charging and discharging.

7. The control method for the energy storage system according to claim 6, characterized in that, The power parameter is the power change rate of the energy storage converter, and the normal power range is limited by the power change rate threshold. The power parameter being within the normal power range includes: the power change rate being less than the power change rate threshold.

8. The control method for the energy storage system according to any one of claims 1 to 3, characterized in that, Before acquiring the second environmental parameters collected by the environmental control device and the battery management parameters of the energy storage system, the method further includes: The decrease in humidity collected by the environmental control device during a set operating period while it is in operation is obtained; If the decrease in humidity is less than the humidity decrease threshold, the energy storage system is controlled to stop charging and discharging.

9. The control method for the energy storage system according to claim 2, characterized in that, The first distance from the environmental sensor to the bottom of the battery compartment is greater than the second distance from the environmental control device to the bottom of the battery compartment; The difference between the first humidity threshold and the second humidity threshold is determined by the difference between the first distance and the second distance.

10. The control method for the energy storage system according to any one of claims 1 to 3, characterized in that, The time difference between the acquisition time of the battery management parameters and the acquisition time of the second environmental parameters is greater than the set observation duration.

11. The control method for an energy storage system according to any one of claims 1 to 3, characterized in that, The number of environmental sensors is multiple; When the first environmental parameter exceeds the range of the first environmental parameter, acquiring the second environmental parameter collected by the environmental control device and the battery management parameters of the energy storage system includes: If the first environmental parameter collected by at least one of the multiple environmental sensors exceeds the range of the first environmental parameter, the second environmental parameter collected by the environmental control device and the battery management parameter of the energy storage system are acquired.

12. The control method for the energy storage system according to any one of claims 1 to 3, characterized in that, The environmental sensor is a temperature and humidity sensor, and the environmental control device is a humidity control device.

13. An energy storage system, characterized in that, A control method for performing an energy storage system as described in any one of claims 1 to 12.

14. An electrical appliance, characterized in that, The electrical equipment includes the energy storage system as described in claim 13.

15. An electronic device, characterized in that, Connected to an energy storage system, for performing the control method of the energy storage system as described in any one of claims 1 to 12.

16. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the control method of the energy storage system as described in any one of claims 1 to 12.

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