Energy storage battery device based on immersed cooling air duct and thermal management method

Abstract

The invention relates to the technical field of energy storage batteries, in particular to an energy storage battery device based on an immersed cooling air duct and a heat management method, and the energy storage battery device comprises a data acquisition module which is used for acquiring real-time operation state information and environment temperature of an energy storage battery module; the heat prediction module predicts the heat production of the energy storage battery module based on the real-time operation state information; the control module is used for sending a control instruction to the immersed cooling air duct module; and the immersed cooling air duct module is used for cooling the energy storage battery module based on the control instruction. The heat production of the energy storage battery is accurately predicted through the heat prediction module, heat dissipation preparation is made in advance, and accurate heat management of the energy storage battery is achieved. And the immersed cooling air duct module can make cooling gas fully contact with the battery, so that the heat dissipation efficiency is improved. Compared with a traditional heat dissipation mode, heat generated by the battery can be taken away more quickly, and the temperature of the battery is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage batteries, and in particular to an energy storage battery device based on an immersion cooling air duct and a thermal management method. Background Art

[0002] As the global demand for clean energy continues to grow, energy storage technology, as a key link in achieving efficient energy utilization and stable supply, is welcoming opportunities for rapid development. As a core component of energy storage technology, energy storage batteries are increasingly being used in the energy field, covering many important areas such as power systems, renewable energy generation, and electric vehicles.

[0003] During the operation of energy storage batteries, a large amount of heat will inevitably be generated. This is mainly due to chemical reactions inside the battery and resistance loss. If this heat cannot be effectively managed and dissipated, it will cause many serious problems for energy storage batteries.

[0004] Traditional thermal management methods gradually reveal their limitations when dealing with high-power density energy storage batteries. Although the simple air cooling method has the advantages of simple structure and low cost, the heat dissipation efficiency is relatively low. When faced with high-power density energy storage batteries, air cooling often cannot quickly take away the heat, causing the battery temperature to continue to rise. Although the liquid cooling system has a better heat dissipation effect, the system is complex and requires special cooling pipes, pumps and other equipment, which not only increases the cost, but also has the risk of leakage. Once a leak occurs, it may cause serious damage to the battery and even cause a safety accident.

[0005] How to effectively manage the temperature of energy storage batteries, improve the reliability and stability of energy storage batteries, and meet the growing demand for high-performance thermal management technology in the energy storage market is a current research direction. Summary of the invention

[0006] (I) Purpose of the invention

[0007] The object of the present invention is to provide an energy storage battery device and a thermal management method based on an immersion cooling air duct, which can more quickly remove the heat generated by the energy storage battery and reduce the temperature of the energy storage battery.

[0008] (II) Technical solution

[0009] To solve the above problems, the present invention provides an energy storage battery device based on an immersion cooling air duct, comprising an energy storage battery module, a data acquisition module, a heat prediction module, a control module and an immersion cooling air duct module;

[0010] The data acquisition module is used to collect real-time operating status information and ambient temperature of the energy storage battery module;

[0011] The heat prediction module is used to receive the real-time operating status information of the energy storage battery module, and predict the heat generation of the energy storage battery based on the real-time operating status information;

[0012] The control module is used to receive the predicted heat generation of the energy storage battery module and the ambient temperature, and send a control instruction to the immersion cooling air duct module;

[0013] The submerged cooling air duct module is used to dissipate heat from the energy storage battery module based on the control instruction.

[0014] In another aspect of the present invention, preferably, the submerged cooling air duct module comprises a cooling unit and a wind speed regulating unit;

[0015] The cooling unit is used to adjust its own temperature based on the control instruction;

[0016] The wind speed regulating unit is used to adjust the wind speed based on the control instruction.

[0017] In another aspect of the present invention, preferably, the immersion cooling air duct module further comprises a support unit, an air duct unit and a fan drive unit;

[0018] The support unit is used to place the energy storage battery module;

[0019] The air duct unit is evenly arranged on the inner peripheral wall of the support unit, and the air duct unit is provided with an air outlet in a direction toward the energy storage battery module;

[0020] The air duct unit, the cooling unit and the fan driving unit are connected in sequence;

[0021] The wind speed regulating unit is connected to the fan driving unit;

[0022] The fan driving unit adjusts the amount of air sucked in according to the wind speed regulating unit;

[0023] The wind sucked in by the fan driving unit passes through the cooling unit and the air duct unit and then blows toward the energy storage battery module through the air outlet.

[0024] In another aspect of the present invention, preferably, the support unit comprises a support frame and a support partition;

[0025] The support partition is arranged in the support frame, and the top surface of the support partition is used to place the energy storage battery module;

[0026] The air duct unit includes a first air duct and a second air duct;

[0027] The air outlet comprises a first air outlet and a second air outlet;

[0028] The first air duct is arranged on the inner peripheral wall of the support frame, and the first air duct is provided with a first air outlet in the direction toward the energy storage battery module;

[0029] The second air duct is arranged on the bottom surface of the supporting partition, and a second air outlet is arranged in the direction of the second air duct toward the energy storage battery module.

[0030] In another aspect of the present invention, preferably, a thermal management method for an energy storage battery device based on an immersion cooling air duct is provided, wherein the thermal management method is used to control the energy storage battery device based on an immersion cooling air duct as described above, and the thermal management method comprises:

[0031] Collect the real-time operating status information of the energy storage battery module in the current time period;

[0032] Predicting the heat generation of the energy storage battery module in the current time period according to the real-time operating status information of the energy storage battery module;

[0033] Calculating the current heat dissipation according to the preset ideal temperature value of the energy storage battery module, the predicted heat generation of the energy storage battery module and the ambient temperature;

[0034] The submerged cooling air duct module is controlled according to the current heat dissipation.

[0035] In another aspect of the present invention, preferably, controlling the immersion cooling air duct module according to the current heat dissipation comprises:

[0036] Acquire the first cooling temperature of the cooling unit and the first wind speed of the wind speed regulating unit in the previous time period;

[0037] According to the current heat dissipation, the first cooling temperature and the first wind speed, taking the minimum adjustment amount as the objective function, calculating the adjustment temperature of the cooling unit and the adjustment wind speed of the wind speed adjustment unit;

[0038] The cooling unit is controlled according to the adjusted temperature, and the wind speed regulating unit is controlled according to the adjusted wind speed.

[0039] In another aspect of the present invention, preferably, the heat generation of the energy storage battery module in the current time period is predicted using the following formula:

[0040] Q 产 =(α p ·j p ·η·P+R·I 2 )·m·Δt

[0041] Among them, Q 产 represents the predicted heat generation of the energy storage battery module, α pRepresents a constant related to the type of energy storage battery module, j p represents the polarization current density of the energy storage battery module, η represents the overpotential, P represents the power of the energy storage battery module, m represents the mass of the energy storage battery module, R represents the internal resistance of the energy storage battery module, I represents the current of the energy storage battery module, and Δt represents the duration of the time period.

[0042] In another aspect of the present invention, preferably, the current heat dissipation is calculated using the following formula:

[0043] Q 散 =m·c·(T 环 -T 理 )+Q 产

[0044] Among them, Q represents the current heat dissipation, m represents the mass of the energy storage battery module, c represents the specific heat capacity of the energy storage battery module, T 环 Indicates the ambient temperature of the energy storage battery module, T 理 Indicates the ideal temperature value.

[0045] In another aspect of the present invention, preferably, according to the current heat dissipation, the first cooling temperature and the first wind speed, taking the minimum adjustment amount as the objective function, calculating the adjustment temperature of the cooling unit and the adjustment wind speed of the wind speed adjustment unit includes:

[0046] Calculating the original heat dissipation in the current time period at the first cooling temperature and the first wind speed;

[0047] Calculating the difference between the current heat dissipation and the original heat dissipation;

[0048] Obtaining the heat dissipation capacity of the cooling unit and the heat dissipation capacity of the wind speed regulating unit;

[0049] According to the difference, the heat dissipation capacity of the cooling unit and the heat dissipation capacity of the wind speed regulating unit, the adjusted temperature of the cooling unit and the adjusted wind speed of the wind speed regulating unit are calculated with the minimum adjustment amount as the objective function.

[0050] In another aspect of the present invention, preferably, the adjusted temperature of the cooling unit and the adjusted wind speed of the wind speed regulating unit are calculated using the following formula:

[0051] D unit ΔT+V unit ΔV=ΔQ

[0052] L=min|ΔT|+|ΔT

[0053] The solution is approximated by the following calculation formula:

[0054]

[0055]

[0056] Where L represents the objective function, ΔQ represents the difference between the current heat dissipation and the original heat dissipation; D unit Indicates the heat dissipation capacity of the cooling unit; V unit It indicates the heat dissipation capacity of the wind speed regulating unit; ΔV indicates the adjusted wind speed of the wind speed regulating unit; ΔT indicates the adjusted temperature of the cooling unit.

[0057] (III) Beneficial effects

[0058] The above technical solution of the present invention has the following beneficial technical effects:

[0059] The present invention collects the real-time operating status information and ambient temperature of the energy storage battery module through the data acquisition module, providing accurate basic data for the entire system. The heat prediction module can more accurately predict the heat generation of the energy storage battery module based on the operating status information, so that the control module can prepare for heat dissipation in advance and realize accurate thermal management of the energy storage battery module. The immersion cooling duct module can dissipate heat from the energy storage battery module according to the instructions of the control module. The immersion design allows the cooling medium to fully contact the battery, thereby improving the heat dissipation efficiency. Compared with traditional heat dissipation methods, the immersion cooling duct can take away the heat generated by the battery more quickly and reduce the battery temperature.

[0060] The present invention can accurately grasp the working condition of the battery by collecting the real-time operating status information of the energy storage battery module in real time, providing a reliable basis for heat generation prediction. The heat generation is predicted based on the operating status information, and the current heat dissipation is calculated in combination with the ambient temperature and the set ideal temperature value, thereby achieving an accurate assessment of the heat dissipation demand. Under the premise of meeting the heat dissipation demand, the present invention minimizes the adjustment range as much as possible to avoid excessive or insufficient heat dissipation, and also reduces the impact on the stability of the immersion cooling duct module caused by frequent and substantial adjustments to the heat dissipation parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0062] Figure 2 is a side view of the overall structure of an embodiment of the present invention;

[0063] Figure 3 is a side view of a support frame according to an embodiment of the present invention;

[0064] Figure 4 is a side view of a support partition according to an embodiment of the present invention;

[0065] Figure 5 It is an overall flow chart of an embodiment of the present invention. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0067] Obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0068] In the description of the present invention, it should be noted that the terms “first”, “second” and “third” are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0069] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0070] Embodiment 1

[0071] An energy storage battery device based on an immersion cooling air duct, Figure 1 FIG. 1 shows a schematic diagram of the overall structure of an embodiment of the present invention. Figure 1 As shown, including:

[0072] Energy storage battery module, data acquisition module, heat prediction module, control module and immersion cooling air duct module;

[0073] The data acquisition module is used to collect real-time operating status information and ambient temperature of the energy storage battery module;

[0074] The data acquisition module is the information source of the entire device. Through various types of sensors, the operating status information and ambient temperature of the energy storage battery module are collected in real time. The operating status information includes battery voltage, current, internal resistance and other parameters. The operating status information can reflect the working condition of the energy storage battery module; the ambient temperature will have a direct impact on the heat dissipation effect of the energy storage battery module.

[0075] The heat prediction module is used to receive the real-time operating status information of the energy storage battery module, and predict the heat generation of the energy storage battery module based on the real-time operating status information; the heat prediction module receives the real-time operating status information of the energy storage battery from the data acquisition module, and uses the corresponding algorithm or model to predict the heat generation of the energy storage battery. By analyzing the operating status parameters of the energy storage battery, the heat generation of the battery under different working conditions can be predicted more accurately.

[0076] The control module is used to receive the predicted heat generation and ambient temperature of the energy storage battery module, and send control instructions to the immersion cooling air duct module; the control module receives the predicted heat generation from the predicted heat module and the ambient temperature collected by the data acquisition module, and accurately controls the immersion cooling air duct module based on this information. The control module can formulate the best heat dissipation strategy according to different situations. For example, when the predicted heat generation is high and the ambient temperature is also high, the control module can increase the wind speed and lower the temperature of the cooling unit to improve the heat dissipation effect. The control module dynamically adjusts the heat dissipation parameters to ensure that the battery always operates within a safe temperature range.

[0077] The submerged cooling air duct module is used to dissipate heat from the energy storage battery module based on the control instructions; the submerged cooling air duct module is a key part to achieve the heat dissipation function, and based on the instructions sent by the control module, the energy storage battery module is efficiently dissipated. The submerged cooling air duct allows the cooling air to fully contact the battery surface, improving the heat dissipation efficiency. The structural design of the cooling air duct needs to take into account the principles of fluid mechanics to ensure that the cooling medium can form a uniform flow around the battery to avoid local overheating.

[0078] Further, in this embodiment, Figure 2 FIG. 2 shows a side view of the overall structure of an embodiment of the present invention, as shown in FIG. Figure 2 As shown, the immersion cooling air duct module includes a cooling unit 1 and a wind speed adjustment unit 2;

[0079] The cooling unit 1 is used to adjust its own temperature based on the control instruction; when the control module determines that the heat generation of the energy storage battery module is high and a stronger heat dissipation effect is required, it will send an instruction to the cooling unit to reduce its temperature. When the heat generation is low or the ambient temperature is low, the control module can instruct the cooling unit to appropriately increase the temperature or not operate to avoid energy waste and system instability caused by excessive cooling.

[0080] The wind speed regulating unit 2 is used to adjust the wind speed based on the control instruction. In the immersion cooling air duct, the wind speed directly affects the air flow speed and the heat dissipation effect. When the heat generation of the energy storage battery module is large, the control module will instruct the wind speed regulating unit to increase the wind speed. Increasing the wind speed can speed up the flow speed of the air in the air duct, thereby improving the heat dissipation efficiency.

[0081] further, Figure 3 A side view of a support frame showing an embodiment of the present invention is shown. Figure 4 A side view of a supporting partition according to an embodiment of the present invention is shown. Figure 3 and Figure 4 As shown, the immersion cooling air duct module also includes a support unit 3, an air duct unit 4 and a fan drive unit;

[0082] The support unit 3 is used to place the energy storage battery module; the support unit 3 has sufficient strength and stability to ensure that the energy storage battery module can be safely placed therein.

[0083] The air duct unit 4 is evenly arranged on the inner peripheral wall of the support unit, and the air duct unit 4 is provided with an air outlet 5 in the direction toward the energy storage battery module; the air duct unit is a channel for cooling air to flow, and is arranged on the inner peripheral wall of the support unit, and is provided with an air outlet in the direction toward the energy storage battery module; it can ensure that the cooling air can be evenly blown to various parts of the energy storage battery module to avoid local overheating. The position and number of the air outlets are not limited.

[0084] The air duct unit 4, the cooling unit 1 and the fan driving unit are connected in sequence;

[0085] The wind speed regulating unit 2 is connected to the fan driving unit;

[0086] The wind sucked in by the fan drive unit passes through the cooling unit 1 and the air duct unit 4 and then blows toward the energy storage battery module through the air outlet. The fan drive unit works in coordination with the cooling unit and the air duct unit. The cooling unit cools the sucked wind to reduce the temperature of the wind, and then the wind blows toward the energy storage battery module through the air duct unit to take away the heat generated by the battery. The efficient operation of the fan drive unit can ensure that the cooling wind can continuously dissipate the heat for the energy storage battery module and ensure that the temperature of the battery is always kept within a safe range.

[0087] Further, the support unit 3 includes a support frame 3-1 and a support partition 3-2;

[0088] The support partition 3-2 is arranged in the support frame 3-1, and the top surface of the support partition 3-2 is used to place the energy storage battery module; the support partition is arranged in the support frame, and its top surface is used to place the energy storage battery module. The support partition plays the role of isolating and supporting the battery, ensuring that the battery can be stably placed in the specified position;

[0089] The air duct unit 4 includes a first air duct 4-1 and a second air duct 4-2;

[0090] The air outlet 5 includes a first air outlet 5-1 and a second air outlet 5-2;

[0091] The first air duct 4-1 is arranged on the inner peripheral wall of the support frame 3-1, and a first air outlet is arranged in the direction of the first air duct toward the energy storage battery module; the first air duct is arranged on the inner peripheral wall of the support frame, and this position design allows cooling air to blow toward the energy storage battery module from the side. The first air duct is arranged in the direction of the first air duct toward the energy storage battery module to improve heat dissipation efficiency.

[0092] The second air duct 4-2 is arranged on the bottom surface of the supporting partition 3-2, and the second air duct 4-2 is provided with a second air outlet 5-2 in the direction toward the energy storage battery module. The supporting partition 3-2 includes a back plate and a placement plate, one back plate is connected to a plurality of placement plates in parallel, and a plurality of placement plates are spaced apart from each other. The back plate is a hollow structure and is connected to the second air duct 4-2. The back plate is a hollow structure and is connected to the cooling unit 1 and the fan drive unit in sequence.

[0093] The present invention collects the real-time operating status information and ambient temperature of the energy storage battery module through the data acquisition module, providing accurate basic data for the entire system. The heat prediction module can more accurately predict the heat generation of the energy storage battery module based on the real-time operating status information, so that the control module can prepare for heat dissipation in advance and realize accurate thermal management of the energy storage battery module. The immersion cooling duct module can dissipate heat from the energy storage battery module according to the instructions of the control module. The immersion design allows the cooling medium to fully contact the battery, thereby improving the heat dissipation efficiency. Compared with traditional heat dissipation methods, the immersion cooling duct can take away the heat generated by the battery more quickly and reduce the battery temperature.

[0094] Embodiment 2

[0095] A thermal management method for an energy storage battery device based on an immersion cooling air duct, the thermal management method is used to control the energy storage battery device based on the immersion cooling air duct as described above, Figure 5 FIG. 1 shows an overall flow chart of an embodiment of the present invention, as shown in FIG. Figure 5 As shown, the thermal management method includes:

[0096] Collect the real-time operating status information of the energy storage battery module in the current time period; through various sensors and monitoring equipment, collect the real-time operating status information of the energy storage battery module in the current time period. This information may include the battery's voltage, current, internal resistance, charge and discharge status, etc. These parameters can reflect the battery's working condition and load level, which is crucial for accurately predicting heat generation. The frequency and accuracy of the collection should be adjusted according to actual needs to ensure that accurate real-time operating status information can be obtained in a timely manner.

[0097] According to the real-time operating status information of the energy storage battery module, the heat generation of the energy storage battery module in the current time period is predicted; the purpose of predicting the heat generation is to understand the heat dissipation requirements of the battery in advance so as to adjust the working parameters of the immersion cooling duct module in time.

[0098] In this embodiment, the heat generation of the energy storage battery module in the current time period is predicted using the following formula:

[0099] Q 产 =(αp ·j p ·η·P+R·I 2 )·m·Δt

[0100] Among them, Q 产 represents the predicted heat generation of the energy storage battery module, α p Represents a constant related to the type of energy storage battery module, j p represents the polarization current density of the energy storage battery module, η represents the overpotential, P represents the power of the energy storage battery module, m represents the mass of the energy storage battery module, R represents the internal resistance of the energy storage battery module, I represents the current of the energy storage battery module, and Δt represents the duration of the time period. The polarization current density reflects the polarization phenomenon inside the battery, which is closely related to the charge and discharge state of the battery. Through the polarization current density, the heat generation of the battery under different charge and discharge conditions can be more accurately predicted. During high-rate charge and discharge, the polarization current density is usually large, and the heat generation will also increase accordingly; the overpotential reflects the energy loss of the battery during the charge and discharge process. The larger the overpotential, the more energy loss inside the battery, and the more heat generation. By considering the overpotential, the heat generation of the battery can be more comprehensively evaluated, providing a more accurate prediction of heat generation for the thermal management system.

[0101] The ideal temperature value of the energy storage battery module is set; the temperature value is as close as possible to the optimal operating temperature range of the battery under the premise of ensuring the battery performance and life.

[0102] The current heat dissipation is calculated based on the ideal temperature value of the energy storage battery module, the predicted heat generation of the energy storage battery module and the ambient temperature; the heat that needs to be dissipated currently is determined by a specific calculation method in combination with the ideal temperature value of the energy storage battery module, the predicted heat generation and the current ambient temperature.

[0103] In this embodiment, the current heat dissipation is calculated using the following formula:

[0104] Q 散 =m·c·(T 环 -T 理 )+Q 产

[0105] Among them, Q represents the current heat dissipation, m represents the mass of the energy storage battery module, c represents the specific heat capacity of the energy storage battery module, T 环 Indicates the ambient temperature of the energy storage battery module, T 理 Indicates the ideal temperature value.

[0106] The immersion cooling air duct module is controlled according to the current heat dissipation. The control method may include adjusting the temperature of the cooling unit, adjusting the wind speed of the wind speed adjustment unit, etc.

[0107] In this embodiment, controlling the immersion cooling air duct module according to the current heat dissipation includes:

[0108] Obtain the first cooling temperature of the cooling unit and the first wind speed of the wind speed regulating unit in the previous time period; when controlling the immersion cooling air duct module, first obtain the first cooling temperature of the cooling unit and the first wind speed of the wind speed regulating unit in the previous time period, because the parameters of the previous time period can provide a basis for the current control decision. By understanding the cooling temperature and wind speed conditions of the previous period, the current system status and trend can be better judged, so that adjustments can be made more reasonably. For example, if the cooling temperature of the previous time period is already low, and the current heat dissipation is not very large, then when calculating the adjustment temperature, you can consider appropriately increasing the temperature to avoid energy waste caused by excessive cooling.

[0109] According to the current heat dissipation, the first cooling temperature and the first wind speed, the adjustment temperature of the cooling unit and the adjustment wind speed of the wind speed adjustment unit are calculated with the minimum adjustment amount as the objective function; with the minimum adjustment amount as the objective function, the adjustment range of the cooling unit and the wind speed adjustment unit is minimized on the premise of meeting the heat dissipation demand. Frequent and large adjustments of the cooling temperature and wind speed will consume more energy. By taking the minimum adjustment amount as the goal, the energy consumption of the system can be reduced while ensuring the heat dissipation effect, and the energy utilization efficiency can be improved. Frequent and large adjustments will cause greater pressure on equipment such as the cooling unit and the wind speed adjustment unit, and reduce the service life of the cooling unit and the wind speed adjustment unit. Taking the minimum adjustment amount as the goal can reduce wear and tear and extend the service life.

[0110] The cooling unit is controlled according to the adjusted temperature, and the wind speed regulating unit is controlled according to the adjusted wind speed.

[0111] In this embodiment, the objective function is expressed by the following formula:

[0112] D unit ΔT+V unit ΔV=ΔQ

[0113] L=min|ΔT|+|ΔT

[0114] When solving the adjustment temperature of the cooling unit and the adjustment wind speed of the wind speed adjustment unit in the above formula, the relationship between the adjustment temperature of the cooling unit and the adjustment wind speed of the wind speed adjustment unit is first approximated by the following calculation formula:

[0115]

[0116] Through the above approximation, the adjusted temperature of the cooling unit and the adjusted wind speed of the wind speed regulating unit are calculated using the following formula:

[0117]

[0118] Where L represents the objective function, ΔQ represents the difference between the current heat dissipation and the original heat dissipation; D unit Indicates the heat dissipation capacity of the cooling unit; V unit It indicates the heat dissipation capacity of the wind speed regulating unit; ΔV indicates the adjusted wind speed of the wind speed regulating unit; ΔT indicates the adjusted temperature of the cooling unit.

[0119] The present invention can accurately grasp the working condition of the battery by collecting the real-time operating status information of the energy storage battery in real time, providing a reliable basis for heat generation prediction. The heat generation is predicted based on the real-time operating status information, and the current heat dissipation is calculated in combination with the ambient temperature and the set ideal temperature value, thereby achieving an accurate assessment of the heat dissipation demand. Under the premise of meeting the heat dissipation demand, the present invention minimizes the adjustment range as much as possible to avoid excessive or insufficient heat dissipation, and also reduces the impact on the stability of the immersion cooling duct module caused by frequent and substantial adjustments to the heat dissipation parameters.

[0120] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

[0121] The present invention has been described above with reference to the embodiments of the present invention. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Without departing from the scope of the present invention, a person skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present invention.

[0122] Although the embodiments of the present invention have been described in detail, it should be understood that the various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the invention.

[0123] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An energy storage battery device based on an immersion cooling air duct, characterized in that: It includes energy storage battery module, data acquisition module, heat prediction module, control module and immersion cooling air duct module; The data acquisition module is used to collect real-time operating status information and ambient temperature of the energy storage battery module; The heat prediction module is used to receive the real-time operating status information of the energy storage battery module, and predict the heat generation of the energy storage battery module based on the real-time operating status information; The control module is used to receive the predicted heat generation of the energy storage battery module and the ambient temperature, and send a control instruction to the immersion cooling air duct module; The submerged cooling air duct module is used to dissipate heat from the energy storage battery module based on the control instruction.

2. The energy storage battery device based on the immersion cooling air duct according to claim 1 is characterized in that: The submerged cooling air duct module comprises a cooling unit (1) and a wind speed regulating unit (2); The cooling unit (1) is used to adjust its own temperature based on the control instruction; The wind speed regulating unit (2) is used to adjust the wind speed based on the control instruction.

3. The energy storage battery device based on the immersion cooling air duct according to claim 2 is characterized in that: The submerged cooling air duct module further comprises a support unit (3), an air duct unit (4) and a fan drive unit; The support unit (3) is used to place the energy storage battery module; The air duct unit (4) is evenly arranged on the inner peripheral wall of the support unit (3), and the air duct unit (4) is provided with an air outlet (5) in a direction toward the energy storage battery module; The air duct unit (4), the cooling unit (1) and the fan drive unit are connected in sequence; The wind speed adjustment unit (2) is connected to the fan driving unit; The fan driving unit adjusts the amount of air sucked in according to the wind speed regulating unit (2); The wind sucked in by the fan drive unit passes through the cooling unit (1) and the air duct unit (4) and then blows toward the energy storage battery module through the air outlet (5).

4. The energy storage battery device based on the immersion cooling air duct according to claim 3 is characterized in that: The support unit (3) comprises a support frame (3-1) and a support partition (3-2); The supporting partition (3-2) is arranged in the supporting frame (3-1), and the top surface of the supporting partition (3-2) is used for placing the energy storage battery module; The air duct unit (4) comprises a first air duct (4-1) and a second air duct (4-2); The air outlet (5) comprises a first air outlet (5-1) and a second air outlet (5-2); The first air duct (4-1) is arranged on the inner peripheral wall of the support frame (3-1), and the first air duct is provided with a first air outlet in a direction toward the energy storage battery module; The second air duct (4-2) is arranged on the bottom surface of the supporting partition (3-2), and the second air duct (4-2) is provided with a second air outlet (5-2) in a direction toward the energy storage battery module.

5. A thermal management method for an energy storage battery device based on an immersion cooling air duct, characterized in that: The thermal management method is used to control the energy storage battery device based on the immersion cooling air duct according to any one of claims 1 to 4, and the thermal management method includes: Collect the real-time operating status information of the energy storage battery module in the current time period; Predicting the heat generation of the energy storage battery module in the current time period according to the real-time operating status information of the energy storage battery module; Calculating the current heat dissipation according to the preset ideal temperature value of the energy storage battery module, the predicted heat generation of the energy storage battery module and the ambient temperature; The submerged cooling air duct module is controlled according to the current heat dissipation.

6. The thermal management method according to claim 5, characterized in that: According to the current heat dissipation, controlling the immersion cooling air duct module includes: Acquire the first cooling temperature of the cooling unit and the first wind speed of the wind speed regulating unit in the previous time period; According to the current heat dissipation, the first cooling temperature and the first wind speed, taking the minimum adjustment amount as the objective function, calculating the adjustment temperature of the cooling unit and the adjustment wind speed of the wind speed adjustment unit; The cooling unit is controlled according to the adjusted temperature, and the wind speed regulating unit is controlled according to the adjusted wind speed.

7. The thermal management method according to claim 6, characterized in that: The heat generation of the energy storage battery module in the current time period is predicted using the following formula: Q 产 =(α p ·j p ·η·P+R·I 2 )·m·Δt Among them, Q 产 represents the predicted heat generation of the energy storage battery module, α p Represents a constant related to the type of energy storage battery module, j p represents the polarization current density of the energy storage battery module, η represents the overpotential, P represents the power of the energy storage battery module, m represents the mass of the energy storage battery module, R represents the internal resistance of the energy storage battery module, I represents the current of the energy storage battery module, and Δt represents the duration of the time period.

8. The thermal management method according to claim 7, characterized in that: The current heat dissipation is calculated using the following formula: Q 散 =m·c·(T 环 -T 理 )+Q 产 Among them, Q represents the current heat dissipation, m represents the mass of the energy storage battery module, c represents the specific heat capacity of the energy storage battery module, T 环 Indicates the ambient temperature of the energy storage battery module, T 理 Indicates the ideal temperature value.

9. The thermal management method according to claim 8, characterized in that: According to the current heat dissipation, the first cooling temperature and the first wind speed, taking the minimum adjustment amount as the objective function, calculating the adjustment temperature of the cooling unit and the adjustment wind speed of the wind speed adjustment unit includes: Calculating the original heat dissipation in the current time period at the first cooling temperature and the first wind speed; Calculating the difference between the current heat dissipation and the original heat dissipation; Obtaining the heat dissipation capacity of the cooling unit and the heat dissipation capacity of the wind speed regulating unit; According to the difference, the heat dissipation capacity of the cooling unit and the heat dissipation capacity of the wind speed regulating unit, the adjusted temperature of the cooling unit and the adjusted wind speed of the wind speed regulating unit are calculated with the minimum adjustment amount as the objective function.

10. The thermal management method according to claim 9, characterized in that: The adjusted temperature of the cooling unit and the adjusted wind speed of the wind speed regulating unit are calculated using the following formula: D unit ·ΔT+V unit ·ΔV=ΔQ L=min|ΔT|+|ΔT| The solution is approximated by the following calculation formula: Where L represents the objective function, ΔQ represents the difference between the current heat dissipation and the original heat dissipation; D unit Indicates the heat dissipation capacity of the cooling unit; V unit It indicates the heat dissipation capacity of the wind speed regulating unit; ΔV indicates the adjusted wind speed of the wind speed regulating unit; ΔT indicates the adjusted temperature of the cooling unit.

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