Air cooling control method and device for energy storage system, energy storage system and electrical equipment

Abstract

The present application relates to the technical field of energy storage systems, and proposes a method, device, energy storage system, and electrical equipment for controlling air cooling of an energy storage system. The method includes: obtaining the concentration of tiny particles smaller than a first size in the air where the energy storage system is located, the concentration of large particles larger than a second size in the air where the energy storage system is located, and the concentration of medium particles larger than or equal to the first size and smaller than or equal to the second size in the air where the energy storage system is located; and controlling the opening or closing of at least one first-class air inlet, at least one second-class air inlet, at least one third-class air inlet, and / or at least one fourth-class air inlet based on the concentration of tiny particles smaller than the first size in the air where the energy storage system is located, the concentration of large particles larger than the second size in the air where the energy storage system is located, and the concentration of medium particles larger than or equal to the first size and smaller than or equal to the second size in the air where the energy storage system is located, to ensure the cleanliness of the cooling air entering the energy storage system.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to an air cooling control method and device for an energy storage system, an energy storage system, and electrical equipment. Background Art

[0002] Energy storage systems store energy through media or devices and release it when needed. They help address temporal and spatial variations in energy supply and demand, improving the stability of power systems.

[0003] In related technologies, cooling the energy storage system is one of the important research topics of the energy storage system. Since the energy storage container is exposed to the outdoors, how to reduce the dust input into the energy storage system while ensuring the amount of cold air used for cooling is one of the technical problems that relevant technicians urgently need to solve. Summary of the Invention

[0004] Based on this, it is necessary to provide an air cooling control method, device, energy storage system and electrical equipment for an energy storage system to address the above technical problems, which can at least control the air cooling device to open different air inlets according to the size and concentration of particles in the air to accurately and effectively filter the particles, reduce the particles input into the energy storage system, and ensure that the cooling air entering the energy storage system is clean.

[0005] In a first aspect, the present application provides an air cooling control method for an energy storage system, wherein multiple air inlets of an air cooling device in the energy storage system are connected to the interior of the energy storage system through an air balancing chamber, wherein a liquid cooling unit inlet fan is disposed in the air balancing chamber, and the multiple air inlets include at least one first-type air inlet for filtering fine particles, at least one second-type air inlet for filtering medium-sized particles, at least one third-type air inlet for filtering large particles, and at least one fourth-type air inlet that does not perform filtering;

[0006] Among them, the air cooling control method of the energy storage system includes:

[0007] Obtaining the concentration of tiny particles smaller than a first size, the concentration of large particles larger than a second size, and the concentration of medium particles larger than or equal to the first size and smaller than or equal to the second size in the air in which the energy storage system is located;

[0008] According to the concentration of small particles, the concentration of medium particles, and the concentration of large particles, the target air inlet is controlled to be opened or closed, and the target air inlet is selected from at least one first-class air inlet, at least one second-class air inlet, at least one third-class air inlet, at least one fourth-class air inlet and a combination thereof.

[0009] In some embodiments, at least one first-type air inlet is controlled to open by at least the following steps:

[0010] If the concentration of tiny particles in the air in which the energy storage system is located is greater than a first preset concentration, at least one first-type air inlet is controlled to be opened, and at least one second-type air inlet, at least one third-type air inlet, and at least one fourth-type air inlet are controlled to be closed.

[0011] In some embodiments, at least one second-type air inlet is controlled to open by at least the following steps:

[0012] If the concentration of fine particles in the air in which the energy storage system is located is less than or equal to a first preset concentration, the concentration of large particles is greater than a second preset concentration, and the concentration of medium particles is less than or equal to a third preset concentration, at least one second-class air inlet is controlled to be opened, and at least one first-class air inlet, at least one third-class air inlet, and at least one fourth-class air inlet are controlled to be closed.

[0013] In some embodiments, further comprising:

[0014] If the concentration of fine particles in the air in which the energy storage system is located is less than or equal to a first preset concentration, and the concentration of medium particles is greater than a third preset concentration, at least one third-type air inlet is controlled to be opened, and at least one first-type air inlet, at least one second-type air inlet, and at least one fourth-type air inlet are controlled to be closed.

[0015] In some embodiments, an air conditioning air inlet is further provided in the air averaging chamber of the air cooling device, and the air cooling control method of the energy storage system further includes:

[0016] After controlling multiple air inlets to open or close in sequence according to a preset combination sequence, control and detect the derating of the liquid cooling unit and air conditioner;

[0017] If the liquid cooling unit and air conditioner are derated, it is determined that the air cooling device is blocked.

[0018] In some embodiments, a battery compartment inlet fan is further provided in the air distribution chamber, and the air cooling control method of the energy storage system further includes:

[0019] Get the current ambient temperature and battery compartment temperature of the energy storage system;

[0020] If the current ambient temperature is lower than the battery compartment temperature, the battery compartment air intake fan is turned on.

[0021] In some embodiments, the air averaging chamber includes a sub-air averaging chamber, the battery compartment inlet fan is arranged in the sub-air averaging chamber, and a dehumidifier is also arranged in the sub-air averaging chamber;

[0022] The air cooling control method of the energy storage system also includes:

[0023] Obtain the current relative humidity of the energy storage system, the current relative humidity in the battery compartment, the current ambient temperature, and the target temperature of the liquid cooling unit;

[0024] Determine the ambient dew point temperature and the battery compartment dew point temperature based on the current ambient relative humidity, the current relative humidity in the battery compartment, the current ambient temperature, and the target temperature of the liquid cooling unit;

[0025] Determine whether there is a condensation risk based on the battery compartment temperature, liquid cooling unit target temperature, ambient dew point temperature, and battery compartment dew point temperature;

[0026] If there is a risk of condensation, the dehumidifier will be turned on.

[0027] In some embodiments, the energy storage system calculates the ambient dew point temperature using the following formula:

[0028] ;

[0029] in, for:

[0030] ;

[0031] in, for:

[0032] ;

[0033] in, is the ambient dew point temperature, is the first intermediate calculated value, is the second intermediate calculated value, is the current ambient temperature, The current ambient humidity.

[0034] In some embodiments, determining whether there is a condensation risk includes:

[0035] If the ambient dew point temperature is greater than or equal to the target temperature of the liquid cooling unit, it is determined that there is a condensation risk.

[0036] In some embodiments, further comprising:

[0037] If the ambient dew point temperature is greater than or equal to the battery compartment dew point temperature, it is determined that there is a condensation risk.

[0038] In some embodiments, further comprising:

[0039] If the ambient dew point temperature is lower than the target temperature of the liquid cooling unit and the dew point temperature of the battery compartment, it is determined that there is no condensation risk.

[0040] In a second aspect, the present application further provides an air cooling control device for an energy storage system, wherein multiple air inlets of an air cooling device in the energy storage system are connected to the interior of the energy storage system through an air balancing chamber, a liquid cooling unit inlet fan is provided in the air balancing chamber, and the multiple air inlets include at least one first-type air inlet for filtering fine particles, at least one second-type air inlet for filtering medium-sized particles, at least one third-type air inlet for filtering large particles, and at least one fourth-type air inlet that does not perform filtering;

[0041] Among them, the air cooling control device of the energy storage system includes:

[0042] a particle concentration acquisition module, configured to acquire the concentration of tiny particles smaller than a first size, the concentration of large particles larger than a second size, and the concentration of medium particles larger than or equal to the first size and smaller than or equal to the second size in the air in which the energy storage system is located;

[0043] An air inlet control module is used to control the opening or closing of a target air inlet according to the concentration of fine particles, the concentration of medium particles, and the concentration of large particles. The target air inlet is selected from at least one first-class air inlet, at least one second-class air inlet, at least one third-class air inlet, at least one fourth-class air inlet, and a combination thereof.

[0044] In a third aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0045] Obtaining the concentration of tiny particles smaller than a first size, the concentration of large particles larger than a second size, and the concentration of medium particles larger than or equal to the first size and smaller than or equal to the second size in the air in which the energy storage system is located;

[0046] According to the concentration of small particles, the concentration of medium particles, and the concentration of large particles, the target air inlet is controlled to be opened or closed, and the target air inlet is selected from at least one first-class air inlet, at least one second-class air inlet, at least one third-class air inlet, at least one fourth-class air inlet and a combination thereof.

[0047] In a fourth aspect, the present application further provides an energy storage system, comprising: a battery pack;

[0048] Management subsystem;

[0049] Energy storage converter;

[0050] The thermal management subsystem is used to execute the steps of the air cooling control method for the energy storage system in any of the above embodiments.

[0051] In a fifth aspect, the present application further provides an electrical device, which includes the air cooling control device of the energy storage system in any of the above embodiments.

[0052] The air cooling control method, device, energy storage system, and electrical equipment of the energy storage system described above can at least filter particles through different air inlets according to the size and concentration of particles in the air through the setting of the air cooling device to ensure the cleanliness of the cooling air entering the energy storage system and reduce the dust input into the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0054] Figure 1 1 is a flow chart of an air cooling control method for an energy storage system according to an embodiment;

[0055] Figure 2 A schematic flow chart of an air cooling control method for an energy storage system in another embodiment;

[0056] Figure 3 A schematic diagram of a flow chart for determining blockage of an air cooling device in an air cooling control method for an energy storage system according to one embodiment;

[0057] Figure 4 A schematic diagram of a flow chart for preventing condensation in a battery compartment in an air cooling control method for an energy storage system according to one embodiment;

[0058] Figure 5 is a schematic diagram of an air cooling device of an energy storage system in one embodiment;

[0059] Figure 6 This is a structural block diagram of an air cooling control device for an energy storage system in one embodiment;

[0060] Figure 7 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment.

[0061] Reference numerals and descriptions:

[0062] 20. Particle concentration acquisition module; 30. Air inlet control module; 401. Air inlet; 402. Sub-averaging air chamber. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0064] Please refer to Figure 1 In an exemplary embodiment, a method for controlling air cooling of an energy storage system is provided, including the following steps S101 to S102.

[0065] Step S101 , obtaining the concentration of tiny particles smaller than a first size, the concentration of large particles larger than a second size, and the concentration of medium particles larger than or equal to the first size and smaller than or equal to the second size in the air where the energy storage system is located.

[0066] Step S102, controlling the target air inlet to be opened or closed according to the concentration of fine particles, the concentration of medium particles, and the concentration of large particles, where the target air inlet is selected from at least one first-class air inlet, at least one second-class air inlet, at least one third-class air inlet, at least one fourth-class air inlet, and combinations thereof.

[0067] The energy storage system includes an air cooling device, please refer to Figure 5 The air cooling device includes multiple air inlets located at the top of the energy storage system, and the multiple air inlets are connected to the interior of the energy storage system through an air balancing chamber. A liquid cooling unit inlet fan is provided in the air balancing chamber. The multiple air inlets include at least one first-class air inlet, at least one second-class air inlet, at least one third-class air inlet, and at least one fourth-class air inlet. The first-class air inlet is used to filter tiny particles, the second-class air inlet is used to filter medium-sized particles, the third-class air inlet is used to filter large particles, and the fourth-class air inlet does not filter. Each air inlet is provided with an air inlet switch device.

[0068] For example, filter cottons of models G4 and M5 can be installed at the first type of air inlet. The G4 filter cotton serves as the first line of defense for primary filtration and is arranged in front of the M5 filter cotton to protect subsequent medium and high efficiency filters from being blocked by medium particulate matter. The M5 filter cotton belongs to medium efficiency filtration and is mostly used for secondary filtration. It is installed after the primary filter G4.

[0069] For example, a filter cotton of model G1 may be installed at the second type of air inlet to filter large particles.

[0070] For example, a G4 filter cotton can be installed at the third type of air inlet to filter medium particulate matter.

[0071] Here, shutters can be used to control the opening and closing angles of the air inlets.

[0072] The air cooling control method for the energy storage system in the above embodiment can at least control the air cooling device to open different air inlets according to the size and concentration of particles in the air to accurately and effectively filter the particles, thereby reducing the particles input into the energy storage system and ensuring that the cooling air entering the energy storage system is clean.

[0073] Specifically, the following steps may be used to control the opening of at least one first-type air inlet:

[0074] If the concentration of tiny particles in the air in which the energy storage system is located is greater than a first preset concentration, at least one first-type air inlet is controlled to be opened, and at least one second-type air inlet, at least one third-type air inlet, and at least one fourth-type air inlet are controlled to be closed.

[0075] Specifically, at least one second-class air inlet can be controlled to open by the following steps: if the concentration of fine particles in the air in which the energy storage system is located is less than or equal to a first preset concentration, the concentration of large particles is greater than a second preset concentration, and the concentration of medium particles is less than or equal to a third preset concentration, then at least one second-class air inlet is controlled to open, and at least one first-class air inlet, at least one third-class air inlet, and at least one fourth-class air inlet are closed.

[0076] Here, the number of different types of air inlets needs to be selected based on the environment in which the energy storage system is located. The number of air inlets of each type can be 2-5. For example, the number of air inlets of each type can be 2, 3, 4, or 5. Specifically, the air cooling control method for the energy storage system further includes: if the concentration of fine particles in the air in which the energy storage system is located is less than or equal to a first preset concentration, and the concentration of medium particles is greater than a third preset concentration, then controlling at least one third type of air inlet to open, and closing at least one first type of air inlet, at least one second type of air inlet, and at least one fourth type of air inlet.

[0077] As an example, see Figure 2 , Figure 2 FIG. 1 is a flow chart of an air cooling control method for an energy storage system according to another embodiment. Figure 2 As shown in , when air cooling control is performed, step S201 is first executed to obtain the concentration of small particles in the air where the energy storage system is located, the concentration of large particles in the air where the energy storage system is located, and the concentration of medium particles in the air where the energy storage system is located.

[0078] Then, step S202 is executed to determine whether the concentration of the tiny particles is greater than a first preset concentration.

[0079] If the concentration of the tiny particles is greater than the first preset concentration, step S205 is executed to open at least one first-type air inlet and determine whether the filter cotton is clogged.

[0080] If the concentration of the fine particles is less than or equal to the first preset concentration, step S203 is executed to determine whether the concentration of the medium particles is greater than a third preset concentration.

[0081] If the concentration of the medium particles is greater than the third preset concentration, step S204 is executed to open at least one third type air inlet and determine whether the filter cotton is clogged.

[0082] If the concentration of medium particles is less than or equal to the third preset concentration, step S206 is executed to determine whether the concentration of large particles is greater than the second preset concentration.

[0083] If the concentration of large particles is greater than the second preset concentration, step S207 is executed to open at least one second type air inlet and determine whether the filter cotton is clogged.

[0084] If the concentration of large particles is less than or equal to the second preset concentration, step S208 is executed to open at least one fourth type air inlet.

[0085] Through Figure 2 By judging the steps shown in , the energy storage system can determine which type of air inlet should be opened in the current environment, so as to filter the dust in the cooling air without shortening the filter cotton life or causing particles to be transported into the air inlet due to the mismatch between the particle size and the air inlet type.

[0086] Here, the size definitions of fine particles, medium particles, and large particles can be determined based on the model of the selected filter cotton. For example, when selecting filter cotton models G4 and M5 for installation in the first type of air inlet, the first size can be 8μm-10μm, and the second size can be 10μm-15μm.

[0087] As an example, the first size may be 8 μm, 9 μm, or 10 μm, etc., and the second size may be 10 μm, 13 μm, or 15 μm, etc.

[0088] The selection of filter cotton model is related to the environmental characteristics of the location of the energy storage system and will not be elaborated here.

[0089] As an example, the first preset concentration may be 75 μg / m³-150 μg / m³, the second preset concentration may be 50 μg / m³-100 μg / m³, and the third preset concentration may be 75 μg / m³-150 μg / m³.

[0090] As an example, the first preset concentration may be 75 μg / m³, 100 μg / m³, 125 μg / m³, 150 μg / m³, and so on.

[0091] As an example, the second preset concentration may be 50 μg / m³, 175 μg / m³, 150 μg / m³, and so on.

[0092] As an example, the third preset concentration may be 75 μg / m³, 100 μg / m³, 125 μg / m³, 150 μg / m³, and so on.

[0093] For details, please refer to Figure 5The air-conditioning air inlet is also provided in the air-distributing chamber of the air-cooling device.

[0094] The air cooling control method for the energy storage system further includes: controlling the opening or closing of multiple air inlets in sequence according to a preset combination sequence, and then controlling and detecting the derating of the liquid cooling unit and the air conditioner; if the liquid cooling unit and the air conditioner are derating, it is determined that the air cooling device is blocked.

[0095] As an example, the preset combination may be opening the first air inlet, the second air inlet separately, or opening the first air inlet and the second air inlet simultaneously, and so on.

[0096] As an example, see Figure 3 , Figure 3 FIG. 1 is a flow chart of determining blockage of an air cooling device in an air cooling control method of an energy storage system in one embodiment. Figure 3 As shown in , step S301 is first executed to open the first air inlet separately.

[0097] Here, the first air inlet is not a first-class air inlet. The first air inlet can be an air inlet designated by the staff. Since the higher the filtration level of the filter cotton, the easier it is to get clogged, it should generally be tested in the order of first testing the first-class air inlet, then testing the third-class air inlet, and then testing the second-class air inlet.

[0098] Execute step S302 to determine whether the liquid cooling unit and the air conditioner are derated.

[0099] Here, the derating issue with liquid cooling units and air conditioners is caused by insufficient cooling air flow into the units and air conditioners. Therefore, by determining whether the liquid cooling units and air conditioners are derating, we can determine whether the air inlets and outlets are blocked.

[0100] If the liquid cooling unit and the air conditioner are not derated, then continue to step S301 and open the first air inlet alone.

[0101] If the liquid cooling unit and the air conditioner are derated, step S303 is executed to open the second air inlet alone.

[0102] After the second air inlet is opened alone, step S304 is executed to determine whether the liquid cooling unit and the air conditioner are derated.

[0103] If the liquid cooling unit and the air conditioner are not derated, the process continues with step S305 to determine that the first air inlet is blocked, and the energy storage system issues an air cooling device blockage alarm.

[0104] Here, the first air inlet and the second air inlet may be of the same type or of different types.

[0105] In this way, it can be determined that the reason for the derating of the liquid cooling unit and the air conditioner is not the blockage of the first and second air inlets, but the derating of the liquid cooling unit and the air conditioner is only due to the large wind resistance of the filter cotton of a single air inlet and the slow air flow rate.

[0106] If the liquid cooling unit and the air conditioner are derated, step S306 is executed to open the first air inlet and the second air inlet at the same time.

[0107] After executing step S306, step S307 is executed to determine whether the liquid cooling unit and the air conditioner are derated.

[0108] If the liquid cooling unit and the air conditioner are not derated, the process continues with step S306 , where the first air inlet and the second air inlet are opened simultaneously.

[0109] If the liquid cooling unit and the air conditioner are derated, step S308 is executed to open the third air inlet alone.

[0110] After executing step S308, step S309 is executed to determine whether the liquid cooling unit and the air conditioner are derated.

[0111] If the liquid cooling unit and the air conditioner are not derated, step S310 is executed to determine that the first air inlet and the second air inlet are blocked, and the energy storage system issues an air cooling device blockage alarm.

[0112] If the liquid cooling unit and the air conditioner are derated, step S311 is executed to open the first air inlet, the second air inlet and the third air inlet at the same time.

[0113] It should be noted that after executing step S311, the energy storage system also needs to execute steps such as opening the fourth air inlet separately and opening the first to fourth air inlets at the same time, and perform a derating judgment after each control to execute a different air inlet opening method until all air inlets are tested.

[0114] In this way, through Figure 3 The judgment process of air cooling device blockage can form a judgment on whether the air inlet is blocked, so as to avoid the air cooling device not receiving sufficient air volume due to air inlet blockage, which in turn leads to the derating of the liquid cooling unit and air conditioner, causing irreversible damage to the liquid cooling unit and air conditioner.

[0115] Optionally, after determining that one or more air inlets are blocked, before the staff replaces the filter cotton, it is also possible to determine the type of blocked air inlet and whether there is an unblocked air inlet of the same type as the blocked air inlet; if there is an unblocked air inlet of the same type as the blocked air inlet, the blocked air inlet can be closed when the air cooling system is working, and the unblocked air inlet can replace the blocked air inlet to intake air; if there is no unblocked air inlet of the same type as the blocked air inlet, the blocked air inlet can continue to be used to intake air, and at the same time, the fourth type of air inlet can be controlled to open an opening of an appropriate size to compensate for the air intake volume until there is no derating of the liquid cooling unit and the air conditioner.

[0116] Specifically, a battery compartment inlet fan is also provided in the air distribution chamber.

[0117] Among them, the air cooling control method of the energy storage system also includes: obtaining the current ambient temperature and the battery compartment temperature; judging whether the current ambient temperature is lower than the battery compartment temperature; if the current ambient temperature is lower than the battery compartment temperature, turning on the battery compartment inlet fan.

[0118] Specifically, a sub-evening air chamber is formed in the air averaging chamber, the battery compartment inlet fan is arranged in the sub-evening air chamber, and a dehumidifier is also arranged in the sub-evening air chamber.

[0119] Among them, the air cooling control method of the energy storage system also includes: obtaining the current ambient relative humidity, the current relative humidity in the battery compartment, the current ambient temperature and the target temperature of the liquid cooling unit; determining the ambient dew point temperature and the battery compartment dew point temperature based on the current ambient relative humidity, the current relative humidity in the battery compartment, the current ambient temperature and the target temperature of the liquid cooling unit; judging whether there is a condensation risk based on the battery compartment temperature of the energy storage system, the target temperature of the liquid cooling unit, the ambient dew point temperature and the battery compartment dew point temperature; if there is a condensation risk, turning on the dehumidifier.

[0120] Specifically, the energy storage system can calculate the ambient dew point temperature using the following formula:

[0121] ;

[0122] in, for:

[0123] ;

[0124] in, for:

[0125] ;

[0126] in, is the ambient dew point temperature, is the first intermediate calculated value, is the second intermediate calculated value, is the current ambient temperature, The current ambient humidity.

[0127] In some embodiments, the energy storage system can calculate the dew point temperature of the battery compartment using the following formula:

[0128] ;

[0129] in, for:

[0130] ;

[0131] in, for:

[0132] ;

[0133] in, is the dew point temperature of the battery compartment, is the third intermediate calculated value, is the fourth intermediate calculated value, is the target temperature of the liquid cooling unit, is the relative humidity inside the battery compartment.

[0134] Among them, whether there is a condensation risk is determined based on the battery compartment temperature of the energy storage system, the target temperature of the liquid cooling unit, the ambient dew point temperature and the battery compartment dew point temperature, including: determining whether the ambient dew point temperature is lower than the target temperature of the liquid cooling unit; if the dew point temperature is greater than or equal to the target temperature of the liquid cooling unit, it is determined that there is a condensation risk.

[0135] Optionally, the air cooling control method of the energy storage system further includes: determining whether the ambient dew point temperature is lower than the battery compartment dew point temperature; if the ambient dew point temperature is higher than or equal to the battery compartment dew point temperature, determining that there is a condensation risk.

[0136] Optionally, the air cooling control method of the energy storage system further includes: if the ambient dew point temperature is lower than the target temperature of the liquid cooling unit and the ambient dew point temperature is lower than the dew point temperature of the battery compartment, determining that there is no condensation risk.

[0137] As an example, see Figure 4 , Figure 4 Schematic diagram of a flow chart for preventing condensation in a battery compartment in an air cooling control method for an energy storage system in one embodiment.

[0138] like Figure 4 As shown in , in the process of preventing condensation in the battery compartment, step S401 is first performed to obtain the current ambient temperature, the battery compartment temperature, the ambient dew point temperature, and the battery compartment dew point temperature.

[0139] Step S402 is executed to determine whether the current ambient temperature is lower than the battery compartment temperature.

[0140] If the current ambient temperature is lower than the battery compartment temperature, step S403 is executed to turn on the air intake fan.

[0141] If the current ambient temperature is greater than or equal to the battery compartment temperature, step S404 is executed to turn off the air intake fan.

[0142] In this way, when the external ambient temperature is low, by turning on the air intake fan, the temperature inside the battery compartment can be reduced, and the ambient temperature inside and outside the battery compartment can be balanced, reducing the risk of condensation.

[0143] After executing step S403, step S405 is executed to determine whether the ambient dew point temperature is lower than the target temperature of the liquid cooling unit.

[0144] If the ambient dew point temperature is greater than or equal to the target temperature of the liquid cooling unit, step S408 is executed to turn on the dehumidifier.

[0145] If the ambient dew point temperature is lower than the target temperature of the liquid cooling unit, step S406 is executed to determine whether the ambient dew point temperature is lower than the battery compartment dew point temperature.

[0146] If the ambient dew point temperature is lower than the battery compartment dew point temperature, step S407 is executed to turn off the dehumidifier.

[0147] If the ambient dew point temperature is greater than or equal to the battery compartment dew point temperature, step S408 is executed to turn on the dehumidifier.

[0148] In this way, when the ambient temperature is low, turning on the air intake fan can not only lower the battery temperature, but also balance the temperature difference between the inside and outside, avoiding the risk of condensation caused by excessive temperature difference; when the ambient humidity is too high, starting the dehumidifier can prevent the risk of condensation while avoiding overheating of the battery compartment.

[0149] The air cooling control method for the energy storage system in the above-mentioned embodiment, through the coordination of the provision of the air cooling device and the air cooling control method, can not only ensure the cleanliness of the cooling air entering the energy storage system, but also detect whether the air cooling device is blocked and avoid condensation in the battery compartment, thereby improving the performance of the air cooling device and further ensuring the normal operation of the energy storage system.

[0150] It should be understood that, although the steps in the flowcharts of the above embodiments are shown in sequence as indicated by the arrows, these steps are not necessarily performed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be performed in other orders. Moreover, at least a portion of the steps in the flowcharts of the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily performed at the same time, but can be performed at different times. The execution order of these steps or stages is not necessarily to be performed in sequence, but can be performed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0151] Based on the same inventive concept, embodiments of the present application further provide an energy storage system air cooling control device for implementing the aforementioned energy storage system air cooling control method. The solution provided by this energy storage system air cooling control device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more energy storage system air cooling control device embodiments provided below can be found in the aforementioned limitations of the energy storage system air cooling control method, and will not be further elaborated here.

[0152] Please refer to Figure 6 In an exemplary embodiment, an air cooling control device for an energy storage system is provided. Multiple air inlets of an air cooling device in the energy storage system are connected to the interior of the energy storage system via an air balancing chamber. A liquid cooling unit inlet fan is disposed in the air balancing chamber. The multiple air inlets include at least one first-type air inlet for filtering fine particles, at least one second-type air inlet for filtering medium-sized particles, at least one third-type air inlet for filtering large particles, and at least one fourth-type air inlet that does not perform filtering.

[0153] Among them, the air cooling control device of the energy storage system includes:

[0154] The particle concentration acquisition module 20 is used to acquire the concentration of small particles smaller than a first size, the concentration of large particles larger than a second size, and the concentration of medium particles larger than or equal to the first size and smaller than or equal to the second size in the air in which the energy storage system is located;

[0155] The air inlet control module 30 is used to control the opening or closing of the target air inlet according to the concentration of fine particles, the concentration of medium particles, and the concentration of large particles. The target air inlet is selected from at least one first-class air inlet, at least one second-class air inlet, at least one third-class air inlet, at least one fourth-class air inlet, and a combination thereof.

[0156] Each module in the air cooling control device for the energy storage system can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in hardware form, or stored in a computer device memory in software form, allowing the processor to call and execute the corresponding operations of each module.

[0157] In an exemplary embodiment, a computer device is provided, which may be a terminal. The computer device includes a processor, memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are connected to the system bus via the input / output interface. The processor of the computer device provides computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and computer program stored in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals via wired or wireless communication, which may be achieved via Wi-Fi, a mobile cellular network, near-field communication (NFC), or other technologies. When executed by the processor, the computer program implements a method for controlling air cooling of an energy storage system. The display unit of the computer device is used to produce a visual image and may be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device casing, or an external keyboard, touchpad or mouse.

[0158] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of 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 a different component arrangement.

[0159] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0160] Obtaining the concentration of tiny particles smaller than a first size, the concentration of large particles larger than a second size, and the concentration of medium particles larger than or equal to the first size and smaller than or equal to the second size in the air in which the energy storage system is located;

[0161] According to the concentration of small particles, the concentration of medium particles, and the concentration of large particles, the target air inlet is controlled to be opened or closed, and the target air inlet is selected from at least one first-class air inlet, at least one second-class air inlet, at least one third-class air inlet, at least one fourth-class air inlet and a combination thereof.

[0162] In one embodiment, an energy storage system is provided, comprising: a battery pack; a management subsystem; an energy storage converter; and a thermal management subsystem, wherein the thermal management subsystem is configured to execute the steps of the method for implementing any of the above embodiments.

[0163] In one embodiment, an electrical device is provided, and the electrical device includes the air cooling control device of the energy storage system in any embodiment.

[0164] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can 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 can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), quantum computing-based data processing logic devices, artificial intelligence (AI) processors, and the like.

[0165] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, 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 application.

[0166] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A method for controlling air cooling of an energy storage system, characterized in that: Multiple air inlets of the air cooling device in the energy storage system are connected to the interior of the energy storage system through an air balancing chamber, and a liquid cooling unit inlet fan is provided in the air balancing chamber. The multiple air inlets include at least one first-type air inlet for filtering fine particles, at least one second-type air inlet for filtering medium-sized particles, at least one third-type air inlet for filtering large particles, and at least one fourth-type air inlet that does not perform filtering; The air cooling control method of the energy storage system includes: Obtaining, in the air in which the energy storage system is located, a concentration of tiny particles smaller than a first size, a concentration of large particles larger than a second size, and a concentration of medium particles larger than or equal to the first size and smaller than or equal to the second size; Controlling the opening or closing of a target air inlet according to the concentration of the fine particles, the concentration of the medium particles, and the concentration of the large particles, wherein the target air inlet is selected from the group consisting of the at least one first-class air inlet, the at least one second-class air inlet, the at least one third-class air inlet, the at least one fourth-class air inlet, and combinations thereof; The at least one first-type air inlet is controlled to open by at least the following steps: If the concentration of the fine particles in the air in which the energy storage system is located is greater than a first preset concentration, controlling at least one of the first-type air inlets to open, and closing at least one of the second-type air inlet, at least one of the third-type air inlet, and at least one of the fourth-type air inlet; The at least one second-type air inlet is controlled to open by at least the following steps: If, in the air in which the energy storage system is located, the concentration of the fine particles is less than or equal to a first preset concentration, the concentration of the large particles is greater than a second preset concentration, and the concentration of the medium particles is less than or equal to a third preset concentration, then controlling at least one of the second-type air inlets to be opened, and closing the at least one first-type air inlet, the at least one third-type air inlet, and the at least one fourth-type air inlet; Among them, also include: If the concentration of the fine particles in the air in which the energy storage system is located is less than or equal to the first preset concentration, and the concentration of the medium particles is greater than the third preset concentration, then at least one of the third-type air inlets is controlled to be opened, and the at least one first-type air inlet, the at least one second-type air inlet, and the at least one fourth-type air inlet are closed.

2. The air cooling control method for the energy storage system according to claim 1, characterized in that: The air-cooling device is further provided with an air-conditioning air inlet in the air-distributing chamber. The air-cooling control method of the energy storage system further includes: After sequentially controlling the opening or closing of the plurality of air inlets according to a preset combination sequence, controlling and detecting the derating of the liquid cooling unit and the air conditioner; If the liquid cooling unit and the air conditioner are derated, it is determined that the air cooling device is blocked.

3. The air cooling control method for the energy storage system according to claim 1, characterized in that: The air distribution chamber is further provided with a battery compartment inlet fan, and the air cooling control method of the energy storage system further includes: Obtaining the current ambient temperature and battery compartment temperature of the energy storage system; If the current ambient temperature is lower than the battery compartment temperature, the battery compartment inlet fan is controlled to be turned on.

4. The air cooling control method for the energy storage system according to claim 3, characterized in that: The air balancing chamber includes a sub-air balancing chamber, the battery compartment inlet fan is arranged in the sub-air balancing chamber, and the sub-air balancing chamber is also provided with a dehumidifier; The air cooling control method of the energy storage system further includes: Obtaining the current ambient relative humidity of the energy storage system, the current relative humidity in the battery compartment, the current ambient temperature, and the target temperature of the liquid cooling unit; Determining the ambient dew point temperature and the battery compartment dew point temperature according to the current ambient relative humidity, the current relative humidity in the battery compartment, the current ambient temperature, and the target temperature of the liquid cooling unit; Determining whether there is a condensation risk based on the battery compartment temperature, the target temperature of the liquid cooling unit, the ambient dew point temperature, and the battery compartment dew point temperature; If the condensation risk exists, the dehumidifier is controlled to be turned on.

5. The air cooling control method for the energy storage system according to claim 4, characterized in that: The energy storage system calculates the ambient dew point temperature using the following formula: ； in, for: ； in, for: ； in, is the ambient dew point temperature, is the first intermediate calculated value, is the second intermediate calculated value, is the current ambient temperature, The current ambient humidity.

6. The air cooling control method for the energy storage system according to claim 4, characterized in that: The determination of whether there is a condensation risk includes: If the ambient dew point temperature is greater than or equal to the target temperature of the liquid cooling unit, it is determined that there is a condensation risk.

7. The air cooling control method for the energy storage system according to claim 6, characterized in that: Also includes: If the ambient dew point temperature is greater than or equal to the battery compartment dew point temperature, it is determined that there is a condensation risk.

8. The air cooling control method for the energy storage system according to claim 7, characterized in that: Also includes: If the ambient dew point temperature is lower than the target temperature of the liquid cooling unit and the dew point temperature of the battery compartment, it is determined that there is no condensation risk.

9. An air cooling control device for an energy storage system, characterized in that: Multiple air inlets of the air cooling device in the energy storage system are connected to the interior of the energy storage system through an air balancing chamber, and a liquid cooling unit inlet fan is provided in the air balancing chamber. The multiple air inlets include at least one first-type air inlet for filtering fine particles, at least one second-type air inlet for filtering medium-sized particles, at least one third-type air inlet for filtering large particles, and at least one fourth-type air inlet that does not perform filtering; Wherein, the air cooling control device of the energy storage system includes: a particle concentration acquisition module, configured to acquire, in the air in which the energy storage system is located, a concentration of tiny particles smaller than a first size, a concentration of large particles larger than a second size, and a concentration of medium particles larger than or equal to the first size and smaller than or equal to the second size; an air inlet control module, configured to control the opening or closing of a target air inlet based on the concentration of the fine particles, the concentration of the medium particles, and the concentration of the large particles, wherein the target air inlet is selected from the group consisting of the at least one first-category air inlet, the at least one second-category air inlet, the at least one third-category air inlet, the at least one fourth-category air inlet, and combinations thereof; The air inlet control module is specifically configured to control at least one of the first-type air inlets to open, and to close at least one of the second-type air inlet, at least one of the third-type air inlet, and at least one of the fourth-type air inlet, if the concentration of the fine particles in the air in which the energy storage system is located is greater than a first preset concentration; The air inlet control module is further configured to control at least one of the second-type air inlets to open, and to close at least one of the first-type air inlet, at least one of the third-type air inlet, and at least one of the fourth-type air inlet, if the concentration of the fine particles in the air in which the energy storage system is located is less than or equal to a first preset concentration, the concentration of the large particles is greater than a second preset concentration, and the concentration of the medium particles is less than or equal to a third preset concentration. Among them, the air inlet control module is also used to control at least one of the third-type air inlets to open and close the at least one first-type air inlet, the at least one second-type air inlet, and the at least one fourth-type air inlet if the concentration of the fine particles in the air in which the energy storage system is located is less than or equal to the first preset concentration, and the concentration of the medium particles is greater than the third preset concentration.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the air cooling control method for the energy storage system according to any one of claims 1 to 8 are implemented.

11. An energy storage system, characterized in that: include: Battery pack; Management subsystem; Energy storage converter; A thermal management subsystem, the thermal management subsystem being used to execute the steps of the air cooling control method for the energy storage system according to any one of claims 1 to 8.

12. An electrical device, characterized in that: Including the air cooling control device of the energy storage system as claimed in claim 9.

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