A method, system and storage medium for temperature control of backup power supply of distribution network

Abstract

Embodiments of the present invention provide a method, system, and storage medium for temperature control of a backup power supply in a power distribution network. The method includes: obtaining a first refrigerant temperature located above a lithium battery module via a first temperature sensing unit; determining a first heating power of a heating module based on the first refrigerant temperature and a preset temperature; obtaining a refrigerant temperature difference at various locations along the height of the lithium battery module via a second temperature sensing unit; correcting the first heating power based on the refrigerant temperature difference and the first refrigerant temperature to obtain a second heating power; and controlling the heating module to heat the refrigerant located below the lithium battery module at the second heating power. When the backup power supply is activated, the lithium battery module is preheated to reduce the battery's internal resistance, thereby reducing the voltage difference during a cold start, avoiding triggering battery low-voltage protection, and ensuring stable operation of related equipment.

Description

Technical Field

[0001] The present invention relates to, but is not limited to, the field of electric energy storage technology, and in particular to a method, system, and storage medium for temperature control of a backup power supply of a distribution network. Background Art

[0002] In the distribution network, submerged batteries are widely used in various grid equipment, such as distribution transformers and reactive power compensation devices. They can provide stable voltage support, improve the operating efficiency and reliability of equipment, reduce power outages, and enhance user experience.

[0003] Existing backup power sources, such as submerged batteries, experience a large inrush current during startup due to the sudden start-up of the device, causing a sudden drop in battery voltage. In some special application scenarios, such as outdoor locations with low ambient temperatures, the battery's temperature is relatively low, and its internal resistance increases accordingly. In these cases, the voltage differential during startup can become even greater, easily triggering the battery's low-voltage protection mechanism. Once the low-voltage protection mechanism is triggered, the battery will experience a power failure, affecting the normal operation of the entire backup power system. It will not be able to perform its backup function at critical moments, posing a risk to the continued operation of related equipment. Summary of the Invention

[0004] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0005] The main purpose of the embodiments of the present invention is to propose a temperature control method, system and storage medium for a backup power supply of a distribution network, which can effectively avoid low-voltage protection failures when the backup power supply is started, thereby ensuring the stable operation of related equipment.

[0006] In a first aspect, an embodiment of the present invention provides a backup power supply temperature control method for a distribution network, which is applied to a backup power supply temperature control system for a distribution network. The backup power supply temperature control system for the distribution network includes a backup energy storage device, the backup energy storage device includes a battery housing and multiple groups of lithium battery modules arranged in the battery housing, an immersion refrigerant is filled between the multiple lithium battery modules, a heating module is provided between a first surface in the battery housing and the lithium battery module, a first temperature sensing unit is provided between a second surface in the battery housing and the lithium battery module, the first surface and the second surface in the battery housing are opposite, and a second temperature sensing unit is provided along the height direction of the lithium battery module; the backup power supply temperature control method for the distribution network includes:

[0007] obtaining a first refrigerant temperature above the lithium battery module through the first temperature sensing unit;

[0008] determining a first heating power of the heating module according to the first refrigerant temperature and a preset temperature;

[0009] Obtaining the refrigerant temperature difference at various locations in the height direction of the lithium battery module through a second temperature sensing unit;

[0010] Correcting the first heating power according to the refrigerant temperature difference and the first refrigerant temperature to obtain a second heating power;

[0011] The heating module is controlled to heat the refrigerant below the lithium battery module at the second heating power.

[0012] In some optional embodiments, at least one magnetic field generator and a guide plate array are further provided in the battery housing, the immersion refrigerant includes vegetable oil and magnetic nanoparticles, and the guide plate array is arranged along the arrangement direction of the lithium battery modules. When the refrigerant temperature difference is greater than a preset temperature difference value, the method further includes:

[0013] Acquire a target spatial area where the refrigerant temperature difference is greater than a preset temperature difference value;

[0014] Determining a target generator according to the target space region and the arrangement direction of the lithium battery module, wherein the target generator represents the magnetic field generator for driving the immersion refrigerant in the target space region to move along the arrangement direction of the lithium battery module;

[0015] The magnetic field generator is controlled according to the refrigerant temperature difference, so that the magnetic field generator drives the immersed refrigerant to flow along the guide plate array.

[0016] In some optional embodiments, determining the first heating power of the heating module according to the first refrigerant temperature and a preset temperature includes:

[0017] When the first refrigerant temperature is lower than the preset temperature, the temperature difference between the first refrigerant temperature and the preset temperature is configured as the temperature difference to be heated;

[0018] Obtaining first parameters of the immersion refrigerant, the first parameters including refrigerant density, refrigerant specific heat capacity, refrigerant thermal conductivity, and refrigerant volume;

[0019] determining a first amount of heat by using the temperature difference to be heated and the first parameter, wherein the first amount of heat represents the amount of heat required to heat the immersion refrigerant to the preset temperature;

[0020] Acquiring environmental parameters, wherein the environmental parameters include temperature and humidity, wind speed, and heat transfer medium, wherein the environmental parameters represent parameters of the environment in which the backup energy storage device is located, and the heat transfer medium represents a medium that performs heat exchange with the backup energy storage device;

[0021] Obtaining a heat dissipation coefficient between the immersion refrigerant and the battery housing;

[0022] determining a heat loss coefficient according to the heat dissipation coefficient and the environmental parameters;

[0023] Get the preset heating time;

[0024] The first heating power is determined according to the preset heating time, the first amount of heat, and the heat loss coefficient.

[0025] In some optional embodiments, the correcting the first heating power according to the refrigerant temperature difference and the first refrigerant temperature to obtain the second heating power includes:

[0026] When the refrigerant temperature difference is greater than a preset temperature difference value, obtaining a temperature difference change curve of the refrigerant temperature difference within a preset time;

[0027] When the temperature difference variation curve indicates that the refrigerant temperature difference increases or remains unchanged over time, configuring the second heating power to zero;

[0028] When the temperature difference variation curve indicates that the refrigerant temperature difference decreases over time, the second heating power is obtained by configuring a power curve of the first heating power varying over time according to the temperature difference variation curve and the first refrigerant temperature;

[0029] When the refrigerant temperature difference is less than or equal to a preset temperature difference value, obtaining a power change value corresponding to the refrigerant temperature difference;

[0030] The second heating power is calculated according to the power change value, the refrigerant temperature difference and the first heating power.

[0031] In some optional embodiments, the heating module is monitored in real time while the heating module is heating. The method for monitoring the heating module includes:

[0032] Obtaining the resistance change rate of the heating module in real time;

[0033] When the resistance change rate is less than a preset change rate, configuring the heating module as an aging module and generating aging warning information;

[0034] determining a first aging coefficient of the heating module according to the resistance change rate and the preset change rate;

[0035] determining a maximum heating power of the heating module according to the first aging coefficient;

[0036] determining a backup heating power of the backup heating component according to the maximum heating power and the second heating power;

[0037] The heating module is controlled to perform heating at the maximum heating power, and the backup heating component is controlled to perform heating at the backup heating power.

[0038] In some optional embodiments, before obtaining the first refrigerant temperature above the lithium battery module through the first temperature sensing unit, the method further includes:

[0039] Predict low and peak periods of electricity consumption based on historical electricity consumption data of the distribution network;

[0040] The time between the electricity consumption low period and the electricity consumption peak period is configured as the preset heating time.

[0041] In some optional embodiments, obtaining the first refrigerant temperature above the lithium battery module by the first temperature sensing unit includes:

[0042] Acquiring the temperature to be corrected above the lithium battery module through the first temperature sensing unit;

[0043] Acquire historical working information of the first temperature sensing unit, wherein the historical working information includes historical working duration information, historical working number information, single working state information, and single working environment information;

[0044] determining a second aging coefficient of the first temperature sensing unit according to the historical working information and a preset aging model;

[0045] The first refrigerant temperature is obtained by correcting the temperature to be corrected according to the second aging coefficient and an aging correction curve, wherein the aging correction curve represents a relationship curve between the second aging coefficient and the temperature correction value.

[0046] In some optional embodiments, determining the second aging coefficient of the first temperature sensing unit according to the historical operating information and a preset aging model includes:

[0047] Inputting the historical working time information, the historical working number information, the single working state information and the single working environment information through the input layer of the preset aging model;

[0048] Processing the historical operating time information through the first intermediate layer of the preset aging model to obtain a first intermediate aging degree of the first temperature sensing unit;

[0049] After processing the historical working times information through the second intermediate layer of the preset aging model, the first intermediate aging degree is corrected to obtain a second intermediate aging degree;

[0050] After processing the single working state information through the third intermediate layer of the preset aging model, correcting the second intermediate aging degree to obtain a third intermediate aging degree;

[0051] After processing the single working environment information through the fourth intermediate layer of the preset aging model, the third intermediate aging degree is corrected to obtain a fourth intermediate aging degree;

[0052] The second aging coefficient is obtained by outputting the fourth intermediate aging degree through the output layer of the preset aging model.

[0053] In a second aspect, an embodiment of the present invention provides a controller comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for temperature control of a backup power supply of a distribution network as described in the first aspect is implemented.

[0054] In a third aspect, an embodiment of the present invention provides a backup power supply temperature control system for a distribution network, comprising the controller involved in the second aspect above.

[0055] In a fourth aspect, a computer storage medium stores computer-executable instructions, wherein the computer-executable instructions are used to execute the standby power supply temperature control method for the distribution network described in the first aspect.

[0056] The beneficial effects of the present invention include: when the backup battery is started, the first temperature sensing unit obtains the first refrigerant temperature above the lithium battery module; the first heating power of the heating module is determined based on the first refrigerant temperature and a preset temperature; the second temperature sensing unit obtains the refrigerant temperature difference at each location in the height direction of the lithium battery module; the first heating power is corrected based on the refrigerant temperature difference and the first refrigerant temperature to obtain a second heating power; and the heating module is controlled to heat the refrigerant below the lithium battery module with the second heating power. By detecting the refrigerant temperature above the lithium battery module, the heating module is controlled to perform heating, and when the refrigerant temperature above the lithium battery module reaches the preset temperature, the temperature of other areas also reaches the preset temperature, thereby avoiding frequent activation of the heating module or inaccurate heating. At the same time, the heating power of the heating module is corrected by the refrigerant temperature difference, avoiding excessive refrigerant temperature difference and local high temperature damage to the lithium battery module. Therefore, the present application can preheat the lithium battery module when the backup power supply is activated, reduce the battery internal resistance, thereby reducing the voltage difference during cold start, avoiding triggering battery low voltage protection, and ensuring stable operation of related equipment.

[0057] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purposes and other advantages of the present invention can be realized and obtained through the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 This is a flowchart of the steps of a method for controlling the temperature of a standby power supply of a distribution network provided by an embodiment of the present invention;

[0059] Figure 2 is a schematic structural diagram of a backup energy storage device provided by an embodiment of the present invention;

[0060] Figure 3 Schematic diagram of the valve of the backup energy storage device provided by an embodiment of the present invention;

[0061] Figure 4 Schematic diagram of a controller provided by one embodiment of the present invention.

[0062] Reference numerals: controller 1000 , processor 1100 , memory 1200 ;

[0063] Lithium battery module 100 , groove frame 200 , battery housing 300 , explosion-proof valve 310 , breathing valve 320 , heating plate 400 . DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be 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 the present invention and are not intended to limit the present invention.

[0065] It should be noted that although the device schematics illustrate functional module divisions and the flowcharts illustrate logical sequences, in certain circumstances, the steps shown or described may be performed in a sequence that differs from the module divisions in the device or the sequence in the flowcharts. The terms "first," "second," and the like in the specification, claims, or accompanying drawings are used to distinguish similar items and are not necessarily used to describe a specific sequence or precedence.

[0066] In the distribution network, submerged batteries are widely used in various grid equipment, such as distribution transformers and reactive power compensation devices. They can provide stable voltage support, improve the operating efficiency and reliability of equipment, reduce power outages, and enhance user experience.

[0067] Existing backup power sources, such as submerged batteries, experience a large inrush current during startup due to the sudden start-up of the device, causing a sudden drop in battery voltage. In some special application scenarios, such as outdoor locations with low ambient temperatures, the battery's temperature is relatively low, and its internal resistance increases accordingly. In these cases, the voltage differential during startup can become even greater, easily triggering the battery's low-voltage protection mechanism. Once the low-voltage protection mechanism is triggered, the battery will experience a power failure, affecting the normal operation of the entire backup power system. It will not be able to perform its backup function at critical moments, posing a risk to the continued operation of related equipment.

[0068] To solve the above-mentioned problems, the present application provides a method, system and storage medium for temperature control of a backup power supply of a distribution network.

[0069] In this application, a method, system and storage medium for temperature control of a backup power supply of a distribution network are provided, which are described in detail one by one in the following embodiments.

[0070] like Figure 1 As shown, an embodiment of the present invention provides a backup power supply temperature control method for a distribution network, which is applied to a backup power supply temperature control system for a distribution network. The backup power supply temperature control system for the distribution network includes a backup energy storage device, which includes a battery housing 300 and multiple groups of lithium battery modules 100 arranged in the battery housing 300. An immersion refrigerant is filled between the multiple lithium battery modules 100. A heating module is provided between the first surface of the battery housing 300 and the lithium battery module 100, and a first temperature sensing unit is provided between the second surface of the battery housing 300 and the lithium battery module 100. The first surface and the second surface of the battery housing 300 are opposite, and a second temperature sensing unit is provided along the height direction of the lithium battery module 100. The backup power supply temperature control method for the distribution network includes:

[0071] S110, obtaining a first refrigerant temperature above the lithium battery module 100 through the first temperature sensing unit;

[0072] S120, determining a first heating power of the heating module according to the first refrigerant temperature and a preset temperature;

[0073] S130, obtaining the refrigerant temperature difference at various locations in the height direction of the lithium battery module 100 through a second temperature sensing unit;

[0074] S140, obtaining a second heating power by correcting the first heating power according to the refrigerant temperature difference and the first refrigerant temperature;

[0075] S150 , controlling the heating module to heat the refrigerant below the lithium battery module 100 at the second heating power.

[0076] Specifically, refer to Figure 2 and Figure 3 The backup energy storage device of this application includes a lithium battery module 100, a battery protection board, a heating module, a trough frame 200, an immersion refrigerant, and a housing. The lithium battery module 100 is composed of multiple lithium iron phosphate cells connected in series, with the cells tightly grouped side by side and separated by insulating pads. The total positive and negative power lines of the lithium battery module 100 are connected to the battery protection board. The cell voltage sampling line and temperature sampling line of the lithium battery module 100 are also connected to the battery protection board.

[0077] The battery protection board's power line inputs are the battery pack's total positive and negative terminals, while the power line outputs connect to the positive and negative terminals of the battery case. The sampling line inputs are the cell voltage and temperature sampling lines. On the battery protection board, the total positive terminal of the lithium battery module 100 is connected to the positive terminal of the battery case, while the total negative terminal of the lithium battery module 100 is connected to the negative terminal of the battery case via two sets of series-connected N-MOS transistors. The battery protection board controls the conduction and shutdown of the N-MOS transistors based on the cell voltage and temperature, preventing overcharging, over-discharging, overcurrent, or overheating, thereby ensuring battery protection.

[0078] The heating module consists of a heating plate 400, which is placed below and outside the lithium battery module 100 to heat the refrigerant medium. A first temperature sensing unit detects the temperature of the first refrigerant above the lithium battery module 100. When the first refrigerant temperature falls below a preset temperature (e.g., 15°C, the specific temperature value depends on the actual scenario and is not limited here), the heating plate 400 activates heating. When the temperature rises above a set threshold (e.g., 25°C), heating stops.

[0079] The ribbed frame 200 is placed between the outer casing and the lithium battery module 100 to secure the module and facilitate heat transfer. The refrigerant, a low-viscosity liquid with excellent insulation, thermal conductivity, and flame retardancy, fills the interior of the outer casing to maintain thermal uniformity in the battery pack and prevent fires caused by thermal runaway. Environmentally friendly vegetable oil is preferred. The outer casing is made of high-strength insulating material with excellent airtightness. It houses the positive and negative electrodes, internally connects to the battery protection board, and externally connects to the charger and load. A breathing valve 320 and an explosion-proof valve 310 are installed on the outer casing. When the air pressure inside the battery compartment changes slowly, the breathing threshold allows air to be drawn in or out of the battery compartment, maintaining consistent pressure inside and outside. When the air pressure inside the battery compartment rises rapidly and exceeds a set value (0.3-0.5 MPa), the explosion-proof valve 310 explodes.

[0080] By setting the first temperature sensing unit above the lithium battery module 100 and setting the heating module below the lithium battery module 100, the immersed refrigerant is heated from bottom to top. When the temperature of the first refrigerant reaches the preset temperature, other parts also reach the preset temperature. If the first temperature sensing unit is set in other areas, the temperature of other parts may not meet the standard. After heat exchange in other parts, the temperature of the first refrigerant drops, thereby repeatedly starting and stopping the heating module. The first heating power of the heating module is determined according to the first refrigerant temperature and the preset temperature, that is, if the first refrigerant temperature is low and the preset temperature is high, the corresponding first heating power is large, otherwise it is small, which will not be elaborated here. The second temperature sensing unit is set in the height direction of the lithium battery module 100, that is, it is set in the straight line area between the heating module and the first temperature sensing unit, and is used to detect the temperature difference between the preset height differences to obtain the corresponding refrigerant temperature difference at each location. If the refrigerant temperature difference is too large, surface heat transfer will be affected, and continued heating will cause localized high temperatures that will damage the battery. However, if the temperature difference is small, the surface temperature is balanced, and the heating power can be appropriately increased. This is corrected to obtain a corresponding second heating power, and the refrigerant is heated at the second heating power until the first refrigerant temperature reaches the preset temperature. This ensures that the backup power supply is at the appropriate temperature when starting, avoiding low-voltage protection failures caused by low battery temperatures.

[0081] In some optional embodiments, at least one magnetic field generator and a guide plate array are further provided in the battery housing 300, the immersion refrigerant includes vegetable oil and magnetic nanoparticles, and the guide plate array is arranged along the arrangement direction of the lithium battery module 100. When the refrigerant temperature difference is greater than a preset temperature difference value, the method further includes: obtaining a target spatial area where the refrigerant temperature difference is greater than the preset temperature difference value; determining a target generator based on the target spatial area and the arrangement direction of the lithium battery module 100, the target generator representing the magnetic field generator used to drive the immersion refrigerant in the target spatial area to move along the arrangement direction of the lithium battery module 100; controlling the magnetic field generator based on the refrigerant temperature difference so that the magnetic field generator drives the immersion refrigerant to flow along the guide plate array.

[0082] It should be noted that the magnetic field generator in the embodiments of the present invention can be located outside the battery housing 300 or inside the battery housing 300 as needed, with no specific limitation on the specific location. Multiple magnetic field generators can be provided to control the magnetic field strength and direction in different regions within the lithium battery. For example, the magnetic field generator utilizes a Helmholtz coil array, each with a maximum power of 50W and an adjustable magnetic field strength range of 0-500mT. These generators are distributed on the bottom and sides of the battery housing 300. Magnetic nanoparticles (such as ferroferric oxide magnetic nanoparticles) are added to the vegetable oil at a suitable concentration, imparting magnetic properties to the resulting immersion refrigerant, making it capable of being driven by a magnetic field. The magnetic field generator generates an alternating magnetic field, driving the directional movement of the magnetic nanoparticles, which in turn creates controlled convection within the immersion refrigerant. The deflector guides the fluid through the module gaps, forming a serpentine flow path, enhancing heat transfer efficiency, thereby balancing temperature differences and preventing heat accumulation in localized areas that could damage the lithium battery module 100. The guide plate array is arranged along the arrangement direction of the lithium battery modules 100; the shape, size and spacing of the guide plates are designed according to needs to guide the immersion refrigerant to flow along a specific path and enhance the heat exchange efficiency of the refrigerant between the battery modules.

[0083] Specifically, the immersion refrigerant is composed of vegetable oil and magnetic nanoparticles. The vegetable oil, as a base carrier, has excellent insulation and certain thermal conductivity properties. The magnetic nanoparticles are evenly dispersed in the vegetable oil, enabling the refrigerant to generate directional flow under the influence of a magnetic field. When the refrigerant temperature difference detected by the second temperature sensing unit exceeds a preset value, the system first identifies the specific area with the excessive temperature difference, namely the target spatial region. This process uses the distribution of the temperature sensing units and the collected temperature data to perform spatial mapping and analysis to accurately locate the abnormal temperature area. Based on the location of the target spatial region and the arrangement of the lithium battery modules 100, the system determines the magnetic field generator most suitable for driving the immersion refrigerant flow in that area, namely the target generator. The position of the magnetic field generator, its magnetic field coverage, and its relative relationship to the target spatial region are considered to ensure that the magnetic field effectively affects the refrigerant in the target area. The control system precisely controls the magnetic field strength and direction of the target generator based on the refrigerant temperature difference. Under the influence of the magnetic field, the immersion refrigerant containing magnetic nanoparticles flows along the deflector array, forming a regular convection. Directed flow can accelerate the transfer of heat from high-temperature areas to low-temperature areas, effectively reduce the temperature difference of the refrigerant, and make the temperature distribution in the entire battery housing 300 more uniform, so that the refrigerant can continue to be heated, thereby improving the working efficiency and safety of the lithium battery module 100 and also improving the heating efficiency of the lithium battery.

[0084] In some embodiments, determining the first heating power of the heating module based on the first refrigerant temperature and the preset temperature includes: when the first refrigerant temperature is less than the preset temperature, configuring the temperature difference between the first refrigerant temperature and the preset temperature as the temperature difference to be heated; obtaining the first parameter of the immersion refrigerant, the first parameter including the refrigerant density, the refrigerant specific heat capacity, the refrigerant thermal conductivity and the refrigerant volume; determining the first heat through the temperature difference to be heated and the first parameter, the first heat representing the heat required to heat the immersion refrigerant to the preset temperature; obtaining environmental parameters, the environmental parameters including temperature and humidity, wind speed and heat transfer medium, the environmental parameters representing the parameters of the environment in which the backup energy storage device is located, the heat transfer medium representing the medium that exchanges heat with the backup energy storage device; obtaining the heat dissipation coefficient between the immersion refrigerant and the battery housing 300; determining the heat loss coefficient based on the heat dissipation coefficient and the environmental parameters; obtaining a preset heating time; determining the first heating power based on the preset heating time, the first heat and the heat loss coefficient.

[0085] Specifically, when the first refrigerant temperature detected by the first temperature sensing unit is lower than the preset temperature, the control system of the present application calculates the difference between the two and defines the difference as the temperature difference to be heated. For example, if the preset temperature is 25°C and the current first refrigerant temperature is 15°C, then the temperature difference to be heated is 10°C. Obtain the specific parameters of the immersion refrigerant. Among them, the refrigerant density reflects the mass of the refrigerant per unit volume; the refrigerant specific heat capacity refers to the amount of heat required to raise the unit temperature of the refrigerant per unit mass. The larger the specific heat capacity, the more heat is required to heat the same mass of refrigerant to the target temperature; the refrigerant thermal conductivity measures the refrigerant's ability to conduct heat. Refrigerants with high thermal conductivity can transfer heat to the lithium battery module 100 faster, improving heat exchange efficiency; the refrigerant volume is the total volume of refrigerant filled in the battery housing 300. The refrigerant volume determines the total amount of refrigerant that needs to be heated. Based on the temperature difference to be heated and the first parameter obtained, the system uses thermodynamic formulas to calculate the amount of heat required to heat the immersion refrigerant from the current temperature to the preset temperature, i.e., the first heat amount.

[0086] The control system collects relevant parameters of the environment in which the backup energy storage device is located through external temperature and humidity sensors, wind speed sensors and pre-stored medium parameters, and determines the heat loss during the transfer process based on the environmental parameters.

[0087] Among them, the ambient temperature and humidity will affect the heat exchange rate between the battery casing 300 and the surrounding environment. For example, in a high temperature environment, heat dissipation will become more difficult; and a high humidity environment may affect the thermal conductivity of certain materials. The ambient wind speed will affect the convective heat dissipation on the surface of the battery casing 300. The greater the wind speed, the higher the heat dissipation rate is generally. The heat conduction medium refers to the surrounding medium that exchanges heat with the backup energy storage device, such as air, soil, etc. Different heat conduction media have different thermal conductivities, which will have a significant impact on heat transfer. The system will analyze the heat transfer characteristics between the immersed refrigerant and the battery casing 300 to determine the heat dissipation coefficient. The heat dissipation coefficient reflects the ability of the refrigerant to dissipate heat to the surrounding environment through the battery casing 300, and its size is related to factors such as the material properties, contact area, and interface state of the refrigerant and the battery casing 300.

[0088] Based on the heat dissipation coefficient and acquired environmental parameters, the system calculates the heat loss coefficient. The heat loss coefficient indicates the proportion of heat lost to the surrounding environment during the heating process. For example, a heat loss coefficient of 0.2 means that 20% of the heat is lost to the environment during the heating process. This coefficient is typically calculated based on empirical formulas or experimental data and is dynamically adjusted based on real-time environmental parameters.

[0089] According to the working requirements of the lithium battery module 100 and the response characteristics of the temperature control system, a reasonable preset heating time is set. The preset heating time determines how long it takes to heat the refrigerant to the preset temperature, and it is inversely proportional to the heating power. Finally, the first heating power required by the heating module is calculated by combining the preset heating time, the first heat and the heat loss coefficient. Through precise calculation methods, the temperature control system can dynamically adjust the heating power according to actual working conditions and environmental conditions to ensure that the lithium battery module 100 can be maintained within an appropriate operating temperature range under various circumstances while avoiding energy waste.

[0090] In some embodiments, the second heating power is obtained after correcting the first heating power according to the refrigerant temperature difference and the first refrigerant temperature, including: when the refrigerant temperature difference is greater than a preset temperature difference value, obtaining a temperature difference change curve of the refrigerant temperature difference within a preset time; when the temperature difference change curve represents that the refrigerant temperature difference increases or remains unchanged over time, configuring the second heating power to zero; when the temperature difference change curve represents that the refrigerant temperature difference decreases over time, obtaining the second heating power after configuring a power curve of the first heating power changing with time according to the temperature difference change curve and the first refrigerant temperature; when the refrigerant temperature difference is less than or equal to a preset temperature difference value, obtaining a power change value corresponding to the unit refrigerant temperature difference; and calculating the second heating power based on the power change value, the refrigerant temperature difference and the first heating power.

[0091] Specifically, when the refrigerant temperature difference detected by the second temperature sensing unit exceeds a preset value, it indicates that a localized overtemperature condition has occurred within the battery. By recording the refrigerant temperature difference over a preset period of time, a temperature difference curve is generated, which reflects the evolution of temperature unevenness over time.

[0092] If the temperature difference curve shows that the refrigerant temperature difference increases or remains constant over time, it means that the current heating strategy is exacerbating the uneven temperature distribution. In this case, set the secondary heating power to zero to suspend heating to prevent the problem from worsening. At the same time, other cooling mechanisms can be triggered to balance the temperature.

[0093] If the temperature difference curve shows that the refrigerant temperature difference decreases over time, the current heating strategy is improving the temperature distribution. Based on the temperature difference curve and the first refrigerant temperature, a time-varying power curve for the first heating power is configured to derive the second heating power. Dynamic adjustment aligns the heating power with the temperature trend, achieving more precise temperature control.

[0094] When the refrigerant temperature difference is less than or equal to a preset value, a linear correction method is used: the power change value corresponding to a unit refrigerant temperature difference is pre-set or obtained through a learning algorithm. This value represents the required adjustment in heating power for every 1°C change in the refrigerant temperature difference. The linear correction method is simple and efficient, and can quickly adjust heating power to accommodate small temperature changes while maintaining a relatively uniform temperature distribution, thereby maintaining internal stability of the lithium battery.

[0095] In some optional embodiments, obtaining the second heating power after configuring a power curve of the first heating power varying with time according to the temperature difference variation curve and the first refrigerant temperature includes:

[0096] By taking the derivative of the temperature difference curve, we can calculate the refrigerant temperature difference change rate at different time points. The change rate reflects the speed at which the temperature distribution unevenness is improving. For example, a large negative change rate indicates that the temperature distribution is rapidly becoming uniform.

[0097] Detect inflection points in the temperature difference curve, where the rate of change changes significantly. Inflection points mark a transition in the temperature distribution, such as a transition from rapid improvement to slow improvement.

[0098] Based on historical data and temperature difference change curve characteristics, the time series analysis method is used to predict the temperature difference change trend within the next preset time period.

[0099] The difference between the first refrigerant temperature and the preset temperature is calculated, and this difference determines the basic heating demand.

[0100] Evaluate the impact of heating power changes on temperature distribution at the current first refrigerant temperature. For example, in a low-temperature environment, the same power change may have a greater impact on temperature distribution.

[0101] Based on the characteristics of the temperature difference change curve and the evaluation results of the first refrigerant temperature, the following strategy is adopted to configure the power curve: when the temperature difference change curve shows that the refrigerant temperature difference is decreasing, but the change rate is small, and the first refrigerant temperature is much lower than the preset temperature, the heating power is appropriately increased in the initial stage to accelerate the uniformity of the temperature distribution; near the inflection point of the temperature difference change curve, the slope of the power curve is smoothly adjusted to avoid temperature fluctuations caused by sudden changes in heating power; when the temperature difference change curve shows that the refrigerant temperature difference is close to the preset temperature difference value, and the first refrigerant temperature is close to the preset temperature, the power adjustment amplitude is reduced for fine control.

[0102] The secondary heating power is dynamically generated based on the configured power curve. The entire heating process is divided into time slices, such as every minute or every 30 seconds. For each time slice, the corresponding heating power value is determined based on the power curve. These power values ​​form a time-varying sequence of the secondary heating power. The power curve is fine-tuned based on the real-time monitored refrigerant temperature difference and the primary refrigerant temperature to ensure that the secondary heating power always matches the actual operating conditions.

[0103] In some embodiments, the heating module is monitored in real time while the heating module is heating, and the monitoring method of the heating module includes: obtaining the resistance change rate of the heating module in real time; when the resistance change rate is less than a preset change rate, configuring the heating module as an aging module and generating aging warning information; determining a first aging coefficient of the heating module based on the resistance change rate and the preset change rate; determining a maximum heating power of the heating module based on the first aging coefficient; determining a standby heating power of a standby heating component based on the maximum heating power and the second heating power; and controlling the heating module to heat at the maximum heating power and the standby heating component to heat at the standby heating power.

[0104] Specifically, the aging status of the heating module is assessed by real-time monitoring of the resistance change rate. The resistance change rate is the percentage change in resistance per unit time. If the monitored resistance change rate is less than a preset rate, it indicates that the resistance of the heating module is changing abnormally slowly, possibly indicating aging. In this case, the aging module is marked for special management, and an aging warning message is sent to the system administrator, prompting timely inspection or replacement of the heating module.

[0105] A first aging coefficient is determined based on the ratio of the resistance change rate to a preset resistance change rate. This first aging coefficient reflects the degree of aging of the heating module, with a smaller coefficient indicating more severe aging. Based on this first aging coefficient, the maximum heating power of the heating module is dynamically adjusted. This reduces the maximum heating power of an aging heating module, thereby reducing the risk of overheating due to aging, extending the life of the heating module, and ensuring the safety of the lithium battery.

[0106] When a heating module ages, enabling a backup heating component to supplement heating capacity ensures that the system's total heating power meets temperature control requirements while preventing overloaded operation of the aging heating module. Simultaneously control the aging heating module and the backup heating component for collaborative heating: limit the power of the aging heating module to no more than its maximum heating power to ensure safe operation; control the backup heating component to provide additional heating capacity based on the calculated backup heating power. During the heating process, temperature changes are monitored in real time, and the heating power of the two modules is dynamically adjusted to maintain a stable heating effect. By providing early warning of aging issues, preventive maintenance is achieved and the risk of system failure is reduced. Limiting the power of the aging heating module avoids safety hazards caused by overheating. By supplementing the backup heating component, the system can continue to operate normally even when the heating module ages.

[0107] In some embodiments, before obtaining the first refrigerant temperature located above the lithium battery module 100 through the first temperature sensing unit, the method further includes: predicting the electricity consumption valley period and the electricity consumption peak period based on the historical electricity consumption data of the distribution network; and configuring the time between the electricity consumption valley period and the electricity consumption peak period as the preset heating time.

[0108] Specifically, time series analysis is performed using historical distribution network electricity consumption data to predict future peak and valley periods. This involves collecting distribution network load data from the past few weeks or months, cleaning it, and standardizing it. Using methods such as Fourier transforms and wavelet analysis, cyclical patterns in load, such as daily and weekly cycles, are identified. This is then combined with appropriate machine learning algorithms to predict future load trends and identify potential valley and peak periods.

[0109] Based on the predicted peak and valley periods of electricity consumption, the time period between the valley period and the peak period is configured as the preset heating time: the valley period of electricity consumption usually corresponds to a period of lower electricity prices, and heating at this time can reduce operating costs. Heating is completed before the peak period of electricity consumption arrives to ensure that the lithium battery module 100 is at the optimal operating temperature during high load demand. According to the predicted time difference between the peak and valley periods, the length of the preset heating time is dynamically adjusted to ensure that cost-effectiveness is maximized without affecting the response of the system. Utilizing valley period electricity for heating reduces peak period electricity demand and reduces the pressure on the power grid. By heating during low electricity price periods, the operating cost of the system is significantly reduced. Optimize the charge and discharge cycle of the energy storage device to improve battery life and overall system efficiency.

[0110] In some embodiments, the obtaining of the first refrigerant temperature located above the lithium battery module 100 through the first temperature sensing unit includes: obtaining the temperature to be corrected located above the lithium battery module 100 through the first temperature sensing unit; obtaining historical working information of the first temperature sensing unit, the historical working information including historical working time information, historical working times information, single working status information and single working environment information; determining the second aging coefficient of the first temperature sensing unit according to the historical working information and a preset aging model; obtaining the first refrigerant temperature after correcting the temperature to be corrected according to the second aging coefficient and an aging correction curve, the aging correction curve representing a relationship curve between the second aging coefficient and the temperature correction value.

[0111] Specifically, the first temperature sensing unit directly collects the refrigerant temperature above the lithium battery module 100 to obtain the temperature to be corrected. This original measurement value is affected by the aging of the sensing unit itself and may have deviations. Therefore, by calculating the aging coefficient of the first temperature sensing unit, the required first refrigerant temperature is obtained after correcting the temperature to be corrected. By continuously recording the historical working information of the first temperature sensing unit: Historical working hours: cumulative working time, reflecting the long-term aging effect. Historical working times: number of start / shutdown cycles, which affects the stability of the sensor. Single working status: temperature range, working time and other parameters of each operation. Single working environment: external conditions such as ambient temperature, humidity, vibration, etc. during each operation.

[0112] Based on historical operating information and a preset aging model, the system calculates the aging degree of the sensor unit to obtain a second aging coefficient. An aging correction curve reflects the relationship between the second aging coefficient and the temperature correction value. The first refrigerant temperature is obtained by correcting the target temperature using the second aging coefficient and the aging correction curve.

[0113] In some optional embodiments, determining the second aging coefficient of the first temperature sensing unit based on the historical working information and the preset aging model includes: inputting the historical working time information, the historical working number information, the single working status information and the single working environment information through the input layer of the preset aging model; processing the historical working time information through the first intermediate layer of the preset aging model to obtain a first intermediate aging degree of the first temperature sensing unit; processing the historical working number information through the second intermediate layer of the preset aging model, and correcting the first intermediate aging degree to obtain a second intermediate aging degree; processing the single working status information through the third intermediate layer of the preset aging model, and correcting the second intermediate aging degree to obtain a third intermediate aging degree; processing the single working environment information through the fourth intermediate layer of the preset aging model, and correcting the third intermediate aging degree to obtain a fourth intermediate aging degree; and outputting the fourth intermediate aging degree through the output layer of the preset aging model to obtain the second aging coefficient.

[0114] Specifically, the input layer of the preset aging model receives historical operating information, including historical operating hours, historical operating times, single operating status information, and single operating environment information. This historical operating information is input into the model in the appropriate data format (e.g., numbers, vectors, etc.). For example, historical operating hours can be expressed as a numerical value in hours; historical operating times can be expressed as specific times; single operating status information, including parameters such as speed and current, is organized into a vector; and single operating environment information, including temperature and humidity, can also be represented as a vector.

[0115] The first intermediate layer processes the input historical working hours information and has built-in corresponding functions or algorithms to describe the relationship between working hours and the first intermediate aging level.

[0116] The second intermediate layer analyzes and processes the historical operating times information, and then uses the processing results to correct the first intermediate aging degree. Each start and stop of the first temperature sensing unit will cause a certain impact and wear on its internal mechanical and electrical components, so the operating times are also an important factor affecting aging. The second intermediate layer uses a corresponding function to describe the impact of the operating times on aging, and then uses a correction formula to correct the first aging degree to obtain the second intermediate aging degree.

[0117] Single-session operating status information includes parameters such as temperature range, operating duration, current, and voltage. These parameters reflect the actual operating status of the first temperature sensing unit during operation. Different operating conditions have different effects on the aging of the first temperature sensing unit. For example, high temperature and high current operating conditions will accelerate the aging of the first temperature sensing unit. The third intermediate layer comprehensively processes the single-session operating status information, calculating statistics such as the average and maximum values ​​of these parameters. These statistics are then used to correct the aging level of the second intermediate layer.

[0118] The single operating environment information includes factors such as temperature, humidity, and vibration. These environmental conditions can significantly affect the aging of the first temperature sensing unit. For example, high temperatures can accelerate the aging of the first temperature sensing unit's insulation material, while humid environments can cause components to rust. The fourth intermediate layer processes the single operating environment information to derive an environmental correction factor. The fourth intermediate aging level is then corrected using the corresponding correction formula to determine the third intermediate aging level.

[0119] The output layer of the preset aging model outputs the fourth intermediate aging degree as the final result, which is the second aging coefficient of the first temperature sensing unit. This second aging coefficient intuitively reflects the degree of aging of the first temperature sensing unit over its historical operating history, thereby facilitating the determination of a temperature correction value for the first temperature sensing unit based on the aging degree.

[0120] The beneficial effects of the present invention include: when the backup battery is activated, the first temperature sensing unit is used to obtain a first refrigerant temperature above the lithium battery module 100; a first heating power of the heating module is determined based on the first refrigerant temperature and a preset temperature; a refrigerant temperature difference at various locations along the height of the lithium battery module 100 is obtained through a second temperature sensing unit; the first heating power is corrected based on the refrigerant temperature difference and the first refrigerant temperature to obtain a second heating power; and the heating module is controlled to heat the refrigerant below the lithium battery module 100 at the second heating power. By detecting the refrigerant temperature above the lithium battery module 100, the heating module is controlled to perform heating. When the refrigerant temperature above the lithium battery module 100 reaches the preset temperature, the temperature of other areas also reaches the preset temperature, thereby avoiding frequent activation of the heating module or inaccurate heating. At the same time, the heating power of the heating module is corrected by the refrigerant temperature difference to avoid excessive refrigerant temperature difference, which may cause local high temperature damage to the lithium battery module 100. Therefore, the present application can preheat the lithium battery module 100 when the backup power supply is enabled, reduce the internal resistance of the battery, and thus reduce the pressure difference during cold start, avoid triggering the battery low voltage protection, and ensure the stable operation of related equipment.

[0121] like Figure 4 As shown, Figure 41 shows a block diagram of a controller 1000 according to an embodiment of the present application. The components of the controller 1000 include, but are not limited to, a memory 1200 and a processor 1100. The processor 1100 and the memory 1200 are connected via a bus, and the memory 1200 is used to store data.

[0122] The controller 1000 also includes an access device that enables the controller 1000 to communicate via one or more networks. Examples of these networks include a public switched telephone network (PSTN), a local area network (LAN), a wide area network (WAN), a personal area network (PAN), or a combination of communication networks such as the Internet. The access device may include one or more of any type of network interface (e.g., a network interface card (NIC)) of wired or wireless, such as an IEEE 802.11 wireless local area network (WLAN) wireless interface, a World Wide Interoperability for Microwave Access (Wi-MAX) interface, an Ethernet interface, a universal serial bus (USB) interface, a cellular network interface, a Bluetooth interface, a near field communication (NFC) interface, and the like.

[0123] The controller 1000 may be any type of stationary or mobile electronic device, including a mobile computer or mobile electronic device (e.g., a tablet computer, a personal digital assistant, a laptop computer, a notebook computer, a netbook computer, etc.), a mobile phone (e.g., a smartphone), a wearable electronic device (e.g., a smartwatch, smart glasses, etc.), or other types of mobile devices, or a stationary electronic device such as a desktop computer or PC. The controller 1000 may also be a mobile or stationary server.

[0124] The processor 1100 is configured to execute computer executable instructions for a method for controlling the temperature of a backup power supply of a distribution network.

[0125] The above is a schematic diagram of a controller according to this embodiment. It should be noted that the technical solution of this controller is based on the same concept as the technical solution of the aforementioned method for controlling the temperature of a backup power supply for a distribution network. For details not described in detail in the technical solution of the controller, please refer to the description of the technical solution of the aforementioned method for controlling the temperature of a backup power supply for a distribution network.

[0126] According to an embodiment of the present application, a temperature control system for a backup power supply of a distribution network is also provided. The temperature control system for the backup power supply of the distribution network includes a backup energy storage device, in which a controller 1000 is installed, or the backup energy storage device and the controller 1000 are connected via communication, so that the backup energy storage device can adjust the temperature of the backup energy storage device through the controller 1000. It should be noted that the technical solution of the temperature control system for the backup power supply of the distribution network and the technical solution of the temperature control method for the backup power supply of the distribution network described above belong to the same concept. For details not described in detail in the technical solution of the computing device, please refer to the description of the technical solution of the temperature control method for the backup power supply of the distribution network described above.

[0127] An embodiment of the present application also provides a storage medium, which is a computer-readable storage medium. The storage medium stores a computer program, and when the computer program is executed by a processor, it implements the above-mentioned standby power supply temperature control method for the distribution network.

[0128] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may include a memory remotely located relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned networks include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof. The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and may be located in one place, or may be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0129] Those skilled in the art will appreciate that all or some of the steps and systems described above can be implemented as software, firmware, hardware, or any combination thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is well known to those skilled in the art, the term computer storage media encompasses volatile and non-volatile, removable, and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks (DVDs) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. Furthermore, as is well known to those skilled in the art, communication media typically includes computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0130] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the art can also make various equivalent modifications or substitutions under the shared conditions that do not violate the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A method for controlling the temperature of a backup power supply of a distribution network, characterized in that: A backup power supply temperature control system for a power distribution network includes a backup energy storage device, the backup energy storage device including a battery housing and multiple groups of lithium battery modules disposed within the battery housing, an immersion refrigerant filled between the multiple lithium battery modules, a heating module disposed between a first surface within the battery housing and the lithium battery module, a first temperature sensing unit disposed between a second surface within the battery housing and the lithium battery module, the first surface and the second surface within the battery housing facing each other, and a second temperature sensing unit disposed along the height direction of the lithium battery module; The standby power supply temperature control method of the distribution network includes: obtaining a first refrigerant temperature above the lithium battery module through the first temperature sensing unit; determining a first heating power of the heating module according to the first refrigerant temperature and a preset temperature; Obtaining the refrigerant temperature difference at various locations in the height direction of the lithium battery module through a second temperature sensing unit; The second heating power is obtained after the first heating power is corrected according to the refrigerant temperature difference and the first refrigerant temperature; specifically comprising: when the refrigerant temperature difference is greater than a preset temperature difference value, obtaining a temperature difference change curve of the refrigerant temperature difference within a preset time; when the temperature difference change curve represents that the refrigerant temperature difference increases or remains unchanged over time, configuring the second heating power to zero; when the temperature difference change curve represents that the refrigerant temperature difference decreases over time, configuring a power curve of the first heating power changing with time according to the temperature difference change curve and the first refrigerant temperature to obtain the second heating power; when the refrigerant temperature difference is less than or equal to a preset temperature difference value, obtaining a power change value corresponding to the refrigerant temperature difference per unit; and calculating the second heating power according to the power change value, the refrigerant temperature difference and the first heating power; The heating module is controlled to heat the refrigerant below the lithium battery module at the second heating power.

2. The method for controlling the temperature of a backup power supply of a distribution network according to claim 1, wherein: At least one magnetic field generator and a guide plate array are further provided in the battery housing, the immersion refrigerant includes vegetable oil and magnetic nanoparticles, and the guide plate array is arranged along the arrangement direction of the lithium battery modules. When the refrigerant temperature difference is greater than a preset temperature difference value, the method further includes: Acquire a target spatial area where the refrigerant temperature difference is greater than a preset temperature difference value; Determining a target generator according to the target space region and the arrangement direction of the lithium battery module, wherein the target generator represents the magnetic field generator for driving the immersion refrigerant in the target space region to move along the arrangement direction of the lithium battery module; The magnetic field generator is controlled according to the refrigerant temperature difference, so that the magnetic field generator drives the immersed refrigerant to flow along the guide plate array.

3. The method for controlling the temperature of a backup power supply of a distribution network according to claim 1, wherein: The determining the first heating power of the heating module according to the first refrigerant temperature and a preset temperature includes: When the first refrigerant temperature is lower than the preset temperature, the temperature difference between the first refrigerant temperature and the preset temperature is configured as the temperature difference to be heated; Obtaining first parameters of the immersion refrigerant, the first parameters including refrigerant density, refrigerant specific heat capacity, refrigerant thermal conductivity, and refrigerant volume; determining a first amount of heat by using the temperature difference to be heated and the first parameter, wherein the first amount of heat represents the amount of heat required to heat the immersion refrigerant to the preset temperature; Acquiring environmental parameters, wherein the environmental parameters include temperature and humidity, wind speed, and heat transfer medium, wherein the environmental parameters represent parameters of the environment in which the backup energy storage device is located, and the heat transfer medium represents a medium that performs heat exchange with the backup energy storage device; Obtaining a heat dissipation coefficient between the immersion refrigerant and the battery housing; determining a heat loss coefficient according to the heat dissipation coefficient and the environmental parameters; Get the preset heating time; The first heating power is determined according to the preset heating time, the first amount of heat, and the heat loss coefficient.

4. The method for controlling the temperature of a backup power supply of a distribution network according to claim 1, wherein: The heating module is monitored in real time while the heating module is heating. The monitoring method of the heating module comprises: Obtaining the resistance change rate of the heating module in real time; When the resistance change rate is less than a preset change rate, configuring the heating module as an aging module and generating aging warning information; determining a first aging coefficient of the heating module according to the resistance change rate and the preset change rate; determining a maximum heating power of the heating module according to the first aging coefficient; determining a backup heating power of the backup heating component according to the maximum heating power and the second heating power; The heating module is controlled to perform heating at the maximum heating power, and the backup heating component is controlled to perform heating at the backup heating power.

5. The method for temperature control of a backup power supply of a distribution network according to claim 3, characterized in that: Before acquiring the first refrigerant temperature above the lithium battery module through the first temperature sensing unit, the method further includes: Predict low and peak periods of electricity consumption based on historical electricity consumption data of the distribution network; The time between the electricity consumption low period and the electricity consumption peak period is configured as the preset heating time.

6. The method for temperature control of a backup power supply of a distribution network according to claim 1, characterized in that: The obtaining of the first refrigerant temperature above the lithium battery module by the first temperature sensing unit includes: Acquiring the temperature to be corrected above the lithium battery module through the first temperature sensing unit; Acquire historical working information of the first temperature sensing unit, wherein the historical working information includes historical working duration information, historical working number information, single working state information, and single working environment information; determining a second aging coefficient of the first temperature sensing unit according to the historical working information and a preset aging model; The first refrigerant temperature is obtained by correcting the temperature to be corrected according to the second aging coefficient and an aging correction curve, wherein the aging correction curve represents a relationship curve between the second aging coefficient and the temperature correction value.

7. The method for controlling the temperature of a backup power supply of a distribution network according to claim 6, wherein: The determining the second aging coefficient of the first temperature sensing unit according to the historical operating information and a preset aging model includes: Inputting the historical working time information, the historical working number information, the single working state information and the single working environment information through the input layer of the preset aging model; Processing the historical operating time information through the first intermediate layer of the preset aging model to obtain a first intermediate aging degree of the first temperature sensing unit; After processing the historical working times information through the second intermediate layer of the preset aging model, the first intermediate aging degree is corrected to obtain a second intermediate aging degree; After processing the single working state information through the third intermediate layer of the preset aging model, correcting the second intermediate aging degree to obtain a third intermediate aging degree; After processing the single working environment information through the fourth intermediate layer of the preset aging model, the third intermediate aging degree is corrected to obtain a fourth intermediate aging degree; The second aging coefficient is obtained by outputting the fourth intermediate aging degree through the output layer of the preset aging model.

8. A temperature control system for a backup power supply of a distribution network, characterized in that: The method comprises a controller, wherein the controller comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for temperature control of a standby power supply of a distribution network according to any one of claims 1 to 7 is implemented.

9. A computer storage medium, characterized in that The computer storage medium stores computer-executable instructions, and the computer-executable instructions are used to execute the standby power supply temperature control method for a distribution network according to any one of claims 1 to 7.

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