Heat dissipation control method and device of charge and discharge equipment, electronic equipment and storage medium

Abstract

This application proposes a heat dissipation control method, device, electronic equipment, and storage medium for a charging and discharging device. The charging and discharging device includes multiple storage locations, a main air duct, a main fan, branch air ducts corresponding to each storage location, and branch air valves corresponding to each storage location. The branch air valves corresponding to each storage location are used to control the airflow of each storage location. The method includes: acquiring the actual measured temperature of a target storage location, which is any one of the multiple storage locations; determining a first temperature difference between the target storage location and a preset temperature of the target storage location; determining the adjustment amount of the target branch air valve corresponding to the target storage location based on the first temperature difference; and controlling the target branch air valve to adjust its opening to a target opening based on the adjustment amount of the target branch air valve, so as to deliver airflow to the target storage location at the target opening. The above technical solution can improve the temperature uniformity and stability of each storage location in the charging and discharging device.

Description

Technical Field

[0001] This application relates to the field of lithium battery production equipment technology, and in particular to a heat dissipation control method, device, electronic equipment and storage medium for charging and discharging equipment. Background Technology

[0002] In battery manufacturing, the formation process is a core step that determines the initial performance, consistency, and long-term reliability of the battery. During formation, complex electrochemical reactions occur inside the battery, releasing a large amount of Joule heat. If this heat cannot be dissipated in a timely and even manner, it will not only affect the stable formation of the SEI film but also lead to increased performance dispersion and even potential safety hazards. Existing centralized ventilation systems mostly use constant airflow or constant pressure differential control in the main air duct, resulting in uneven heat dissipation across different storage areas and posing safety risks. Therefore, how to achieve accurate heat dissipation control for charging and discharging equipment to ensure its safe and stable operation is an urgent problem to be solved. Summary of the Invention

[0003] This application provides a heat dissipation control method, device, electronic device, and storage medium for a charging and discharging device, which can achieve accurate heat dissipation control of each storage location in the charging and discharging device, enabling the charging and discharging device to operate safely and stably.

[0004] The first aspect of this application provides a heat dissipation control method for a charging and discharging device. The charging and discharging device includes multiple storage locations, a main air duct, a main fan, branch air ducts corresponding to each storage location, and branch air valves corresponding to each storage location. The main air duct is connected to the main fan, and the branch air ducts corresponding to each storage location are connected to both the main air duct and each storage location, so as to deliver the air volume generated by the main fan to each storage location through the branch air ducts corresponding to each storage location. The branch air valves corresponding to each storage location are installed on the branch air ducts corresponding to each storage location to control the air volume of each storage location. The method includes: Obtain the actual measured temperature of the target storage location, which is any one of the plurality of storage locations; The first temperature difference of the target storage location is determined based on the actual measured temperature of the target storage location and the preset temperature of the target storage location. Based on the pressure difference between the preset static pressure and the current static pressure of the main air duct, the operating frequency of the main fan is determined as the target operating frequency, and the main fan is controlled to operate at the target operating frequency so that the static pressure of the main air duct is maintained at the preset static pressure. Based on the first temperature difference, determine the adjustment amount of the target branch air valve corresponding to the target storage location; Based on the adjustment amount of the target branch air valve, control the target branch air valve to adjust its opening to the target opening, so as to deliver air volume to the target storage location at the target opening.

[0005] In some embodiments, determining the adjustment amount of the target branch damper corresponding to the target storage location based on the first temperature difference includes: Based on the first temperature difference and the first preset coefficient set, the adjustment amount of the target branch air valve corresponding to the target storage location is determined. The first preset coefficient set includes a first proportional coefficient, a first integral coefficient, and a first differential coefficient.

[0006] In some embodiments, the method further includes: Based on the voltage and current of the target storage location, the initial air volume of the target storage location is determined using a temperature rise prediction model. The opening degree of the target branch air valve corresponding to the initial air volume is the initial opening degree. The temperature rise prediction model is obtained based on the formation stage, current curve, and historical temperature rise rate of the target storage location. The step of controlling the target branch air valve to adjust its opening to a target opening based on the adjustment amount of the target branch air valve, so as to deliver air volume to the target storage location at the target opening, includes: In the case of the first adjustment of the target branch air valve, based on the initial opening and the adjustment amount, the target branch air valve is controlled to adjust the valve opening from the initial opening to the target opening, so as to deliver air volume to the target storage location at the target opening.

[0007] In some embodiments, determining the initial air volume of the target storage location using a temperature rise prediction model based on the voltage and current of the target storage location includes: The heat generation power of the target storage location is obtained based on the voltage and current of the target storage location. The temperature rise value of the target storage location is obtained based on the heat production power and the temperature rise prediction model. Based on the initial temperature of the target storage location and the temperature rise value, the actual predicted temperature of the target storage location is determined, and the actual predicted temperature corresponds to the actual measured temperature. Based on the actual predicted temperature, the initial air volume of the target storage location corresponding to the actual predicted temperature is determined from the first mapping relationship, wherein the first mapping relationship is used to indicate the correspondence between multiple temperatures and multiple air volumes.

[0008] In some embodiments, before determining the adjustment amount of the target branch damper corresponding to the target storage location based on the first temperature difference, the method further includes: The operating frequency of the main fan is determined based on the pressure difference between the preset static pressure and the current static pressure of the main air duct, so that the static pressure of the main air duct is maintained at the preset static pressure.

[0009] In some embodiments, determining the operating frequency of the main fan based on the pressure difference between the preset static pressure and the current static pressure of the main air duct includes: The operating frequency of the main fan is determined based on the pressure difference and the second preset coefficient set, wherein the second preset coefficient set includes a second proportional coefficient, a second integral coefficient, and a second differential coefficient.

[0010] In some embodiments, the method further includes: Obtain the temperature rise rate of the target storage location within a preset time period; If, among the multiple storage locations, the temperature rise rate of the first target storage location exceeds a temperature rise threshold, the opening degree of the air valve at the first target storage location is controlled to open to its maximum value; or, If the actual measured temperature of the second target storage location among the multiple storage locations is greater than the first temperature threshold, the operating frequency of the main fan is increased to isolate the second target storage location from the other storage locations among the multiple storage locations, and an alarm is output. The alarm is used to indicate that there is an anomaly in the second target storage location.

[0011] In some embodiments, the method further includes: The maximum temperature of the charging and discharging equipment and multiple second temperature differences between the temperatures of multiple storage locations are obtained; From the plurality of second temperature differences, at least one storage location corresponding to a second temperature difference greater than a second temperature threshold is determined. The adjustment priority of the at least one storage location is greater than the adjustment priority of other storage locations. The adjustment time of the storage location with higher adjustment priority is earlier than the adjustment time of the storage location with lower adjustment priority. The other storage locations are storage locations other than the at least one storage location among the plurality of storage locations. The step of controlling the target branch damper to adjust its opening to the target opening based on the adjustment amount of the target branch damper includes: According to the adjustment priority of the target storage location, the target branch air valve is controlled according to the adjustment amount of the target branch air valve corresponding to the target storage location.

[0012] A second aspect of this application provides a heat dissipation control device for a charging and discharging device. The charging and discharging device includes multiple storage locations, a main air duct, a main fan, branch air ducts corresponding to each storage location, and branch air valves corresponding to each storage location. The main air duct is connected to the main fan, and the branch air ducts corresponding to each storage location are connected to both the main air duct and each storage location, so as to deliver the airflow generated by the main fan to each storage location through the branch air ducts corresponding to each storage location. The branch air valves corresponding to each storage location are installed on the branch air ducts corresponding to each storage location to control the airflow at each storage location. The device includes: The acquisition module is used to acquire the actual measured temperature of the target storage location, which is any one of the plurality of storage locations; The determining module is used to determine a first temperature difference of the target storage location based on the actual measured temperature of the target storage location and the preset temperature of the target storage location; and to determine the adjustment amount of the target branch air valve corresponding to the target storage location based on the first temperature difference. The control module is used to control the target branch air valve to adjust its opening to a target opening based on the adjustment amount of the target branch air valve, so as to deliver air volume to the target storage location at the target opening.

[0013] A third aspect of this application provides an electronic device including a processor and a memory, the memory storing a computer program, wherein the processor executes the computer program to implement the steps of any of the methods described in the first aspect of this application.

[0014] A fourth aspect of this application provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the steps of any of the methods described in the first aspect of this application.

[0015] The technical solutions provided in this application have at least the following beneficial effects: This application proposes a heat dissipation control method, device, electronic device, and storage medium for charging and discharging equipment. The method involves acquiring the actual measured temperature of a target storage location (each of multiple storage locations), determining the adjustment amount of the branch air valve corresponding to each storage location based on a first temperature difference between the actual measured temperature and the preset temperature of the target storage location, prior to this, determining the operating frequency of the main fan as the target operating frequency based on the pressure difference between the preset static pressure and the current static pressure of the main air duct, and controlling the main fan to operate at the target operating frequency to maintain the static pressure of the main air duct at the preset static pressure. Based on this, the opening degree of the corresponding branch air valve is adjusted according to the adjustment amount of the branch air valve corresponding to each storage location, thereby achieving precise and accurate independent control of the air supply volume for each storage location. Furthermore, before adjusting the branch air valves of each storage location, priority is given to adjusting the preset static pressure... The pressure difference between the main air duct pressure and the actual static pressure of the main air duct is used to adjust the operating frequency of the main fan, ensuring that the static pressure of the main air duct remains stable at the preset static pressure. This eliminates, to some extent, the crosstalk effect caused by the pressure fluctuation of the main air duct on the air volume distribution of each storage location. This ensures that when each storage location independently adjusts its branch air valve, the air volume obtained depends only on its own valve opening, and is no longer affected by the valve position changes of other storage locations. This solves the coupling problem of fluctuations in the entire storage location caused by adjusting the air valve of one storage location in a traditional centralized air duct. Secondly, the stable static pressure significantly improves the linearity and predictability of the branch air valve adjustment, making the valve position adjustment calculated based on the first temperature difference more accurate. This avoids adjustment lag or over-adjustment caused by unstable static pressure, thereby eliminating temperature differences between storage locations and improving the temperature uniformity and stability of each storage location in the charging and discharging equipment, enabling the charging and discharging equipment to operate safely and stably. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the charging and discharging device proposed in the embodiments of this application; Figure 2 This is a schematic flowchart of a heat dissipation control method for a charging and discharging device according to an embodiment of this application; Figure 3 This is a flowchart illustrating how to adjust the target branch air valve in a heat dissipation control method for a charging and discharging device according to an embodiment of this application. Figure 4 This is a flowchart illustrating the prediction of the initial air volume of a target storage location in a heat dissipation control method for a charging and discharging device according to an embodiment of this application. Figure 5 This is a schematic diagram of the process of controlling the branch air valve according to the adjustment priority in a heat dissipation control method for a charging and discharging device proposed in an embodiment of this application. Figure 6 This is a flowchart illustrating the framework of a heat dissipation control method for a charging and discharging device proposed in an embodiment of this application. Figure 7This is a schematic flowchart illustrating another heat dissipation control method for a charging and discharging device proposed in an embodiment of this application. Figure 8 This is a schematic diagram of the heat dissipation control structure of a charging and discharging device according to an embodiment of this application; Figure 9 This is a schematic diagram of the structure of an electronic device proposed in an embodiment of this application. Detailed Implementation

[0017] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0018] To facilitate a clear description of the technical solutions in the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. For example, "first instruction" and "second instruction" are used to distinguish different user instructions and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0019] It should be noted that in the embodiments of this application, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplarily" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the words "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0020] Furthermore, "at least one" refers to one or more, while "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can mean: a, or b, or c, or a and b, or a and c, or b and c, or a, b, and c, where a, b, and c can be single or multiple.

[0021] It should be noted that, in the embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0022] In battery manufacturing, the formation process is a core step that determines the initial performance, consistency, and long-term reliability of the battery. During formation, complex electrochemical reactions occur inside the battery, releasing a large amount of Joule heat. If this heat cannot be dissipated in a timely and uniform manner, it will not only affect the stable formation of the SEI film (Solid Electrolyte Interphase), but also lead to increased performance dispersion and even potential safety hazards. The SEI film is a critical protective layer in lithium-ion battery production. During battery formation (first charge activation), the electrolyte undergoes a chemical reaction on the surface of the negative electrode, forming an extremely thin and stable solid film.

[0023] Existing centralized ventilation systems mostly use constant airflow or constant pressure differential control in the main air duct, resulting in uneven heat dissipation across different storage locations and posing safety hazards. Therefore, how to achieve accurate heat dissipation control for charging and discharging equipment, ensuring its safe and stable operation, is an urgent problem to be solved.

[0024] In view of this, embodiments of this application propose a heat dissipation control method, device, electronic device, and storage medium for a charging and discharging device. The charging and discharging device includes multiple storage locations, a main air duct, a main fan, branch air ducts corresponding to each storage location, and branch air valves corresponding to each storage location. The main air duct is connected to the main fan, and the branch air ducts corresponding to each storage location are connected to both the main air duct and each storage location, so as to deliver the air volume generated by the main fan to each storage location through the branch air ducts corresponding to each storage location. The branch air valves corresponding to each storage location are installed on the branch air ducts corresponding to each storage location to control the air volume of each storage location. The method includes: obtaining the actual measured temperature of the target storage location. The target storage location is any one of multiple storage locations; based on the actual measured temperature of the target storage location and the preset temperature of the target storage location, the first temperature difference of the target storage location is determined; based on the pressure difference between the preset static pressure and the current static pressure of the main air duct, the operating frequency of the main fan is determined as the target operating frequency, and the main fan is controlled to operate at the target operating frequency so that the static pressure of the main air duct is maintained at the preset static pressure; based on the first temperature difference, the adjustment amount of the target branch air valve corresponding to the target storage location is determined; based on the adjustment amount of the target branch air valve, the target branch air valve is controlled to adjust its opening to the target opening so as to deliver air volume to the target storage location at the target opening. The above technical solution obtains the actual measured temperature of the target storage location (each of multiple storage locations), and determines the adjustment amount of the corresponding branch air valve for each storage location based on the first temperature difference between the actual measured temperature and the preset temperature of the target storage location. This adjusts the opening of the air valve, thereby achieving precise and accurate independent control of the air supply volume for each storage location. This eliminates temperature differences between storage locations, thereby improving the uniformity and stability of the temperature of each storage location in the charging and discharging equipment, enabling the charging and discharging equipment to operate safely and stably.

[0025] The charging and discharging devices mentioned in the embodiments of this application are described below, such as... Figure 1 As shown, the charging and discharging equipment includes multiple storage locations 101, a main air duct 102, a main fan 103, branch air ducts corresponding to each storage location, and branch air valves corresponding to each storage location. The main air duct 102 is connected to the main fan 103. The branch air ducts corresponding to each storage location are connected to the main air duct and each storage location respectively, so as to deliver the air volume generated by the main fan to each storage location through the branch air ducts corresponding to each storage location. The branch air valves corresponding to each storage location are installed on the branch air ducts corresponding to each storage location to control the air volume of each storage location.

[0026] For example, the charging and discharging equipment can be a formation equipment, which is a key process equipment in lithium battery production. It is used to perform the first charge and discharge activation of the battery after liquid injection, so as to promote the formation of a stable solid SEI film on the surface of the negative electrode, thereby determining the battery's capacity, cycle life, safety and consistency.

[0027] The following embodiments illustrate a heat dissipation control method for a charging and discharging device proposed in this application. This method independently controls the opening degree of the branch air valve of each storage location, enabling the actual measured temperature of each storage location to independently and quickly approach its respective preset temperature. Figure 2 As shown, the method includes the following steps: Step 201: Obtain the actual measured temperature of the target storage location, which can be any one of multiple storage locations.

[0028] The charging and discharging equipment includes multiple storage locations, and the target storage location is any one of the multiple storage locations. In this embodiment of the application, taking the target storage location as an example, the actual measured temperature of the target storage location can be measured by a storage location temperature sensor.

[0029] For example, each storage location may include multiple storage location temperature sensors, such as 2-6. The measured temperature of the target storage location may be the average of the multiple measured temperatures.

[0030] Step 202: Determine the first temperature difference of the target storage location based on the actual measured temperature of the target storage location and the preset temperature of the target storage location.

[0031] The first temperature difference of the target storage location is obtained by calculating the difference between the actual measured temperature and the preset temperature. In this embodiment, the preset temperature for different storage locations can be the same.

[0032] When the air volume of each storage location is controlled separately, adjusting the opening of the air valve of one storage location will adjust the corresponding air volume of that storage location, which may interfere with the air volume of other storage locations. In order to avoid the problem of crosstalk between the air ducts of each storage location during the process of adjusting each storage location separately, the embodiment of this application adjusts the air volume of each storage location while keeping the static pressure of the main air duct stable.

[0033] Step 203: Based on the pressure difference between the preset static pressure and the current static pressure of the main air duct, determine the operating frequency of the main fan as the target operating frequency, and control the main fan to operate at the target operating frequency so that the static pressure of the main air duct is maintained at the preset static pressure.

[0034] For example, the current static pressure can be obtained in real time by a static pressure sensor at the target storage location.

[0035] For example, closed-loop control of a PID controller can be used to maintain the stability of the static pressure in the main air duct. Alternatively, a simplified mathematical model describing the dynamic response of the static pressure in the main air duct (such as a first-order inertial plus pure time delay model) can be established. In each control cycle, based on the current pressure difference and the model, the static pressure change trajectory under different frequency sequences in the next few steps can be predicted. Then, an optimal frequency sequence can be selected to minimize the future pressure difference and energy consumption. Alternatively, a simplified part of the PID control, such as proportional P control, can be directly used.

[0036] For example, maintaining the static pressure of the main air duct at the preset static pressure does not necessarily mean that the current static pressure of the main air duct is equal to the preset static pressure. It could mean that the difference between the current static pressure and the preset static pressure is very small or that the current static pressure is close to the preset static pressure.

[0037] Step 204: Based on the first temperature difference, determine the adjustment amount of the target branch air valve corresponding to the target storage location.

[0038] Based on the first temperature difference calculated from the target storage location, the adjustment amount of the target branch air valve corresponding to the target storage location is calculated.

[0039] For example, the adjustment amount of the target branch damper can be calculated by a PID controller, or it can be obtained by finding the adjustment amount of the target branch damper through the first temperature difference from the pre-set mapping relationship between the temperature difference and the adjustment amount, or it can be completed by a trained neural network. This application embodiment does not limit this.

[0040] Step 205: Based on the adjustment amount of the target branch air valve, control the target branch air valve to adjust the valve opening to the target opening, so as to deliver air volume to the target storage location at the target opening.

[0041] The adjustment amount calculated in the previous step, such as "increase by 15%", is sent as a control command to the actuator of the target branch damper corresponding to the target storage location. The target branch damper is then controlled to adjust its opening to the target opening, and at this target opening, the corresponding air volume is delivered to the target storage location.

[0042] For example, after completing one control operation on a target storage location through the above steps, the process can switch to processing the next storage location in one go, or the entire process can be executed in parallel on each of multiple storage locations. The actual measured temperature of all storage locations is continuously collected at a preset sampling frequency. The temperature difference of each storage location is calculated independently, and its corresponding branch air valve is controlled independently, thereby achieving precise control of the airflow in each storage location.

[0043] The above technical solution obtains the actual measured temperature of the target storage location (each of multiple storage locations), determines the adjustment amount of the branch air valve corresponding to each storage location based on the first temperature difference between the actual measured temperature and the preset temperature of the target storage location, and before that, determines the operating frequency of the main fan as the target operating frequency based on the pressure difference between the preset static pressure and the current static pressure of the main air duct, and controls the main fan to operate at the target operating frequency so that the static pressure of the main air duct is maintained at the preset static pressure. On this basis, the opening degree of the corresponding branch air valve is adjusted according to the adjustment amount of the branch air valve corresponding to each storage location, so as to achieve fine and accurate independent control of the air supply volume of each storage location. Furthermore, before adjusting the branch air valves of each storage location, the adjustment is based on the pressure difference between the preset static pressure and the actual static pressure of the main air duct. The operating frequency of the main fan ensures that the static pressure in the main air duct remains stable at the preset static pressure. This eliminates, to some extent, the crosstalk caused by pressure fluctuations in the main air duct affecting the airflow distribution to each storage location. This means that when each storage location independently adjusts its branch valve, the airflow it receives depends only on its own valve opening, and is no longer affected by changes in the valve positions of other storage locations. This solves the coupling problem of fluctuations across the entire storage location caused by adjusting the valve in one storage location in traditional centralized air duct systems. Secondly, the stable static pressure significantly improves the linearity and predictability of branch valve adjustments, making the valve adjustment calculated based on the first temperature difference more accurate. This avoids adjustment lag or over-adjustment caused by unstable static pressure, thereby eliminating temperature differences between storage locations and improving the temperature uniformity and stability of each storage location in the charging and discharging equipment, enabling the charging and discharging equipment to operate safely and stably.

[0044] The following examples illustrate how to determine the adjustment amount of the target branch air valve corresponding to the target storage location based on the first temperature difference.

[0045] In some embodiments, determining the adjustment amount of the target branch damper corresponding to the target storage location based on the first temperature difference includes: Based on the first temperature difference and the first preset coefficient set, the adjustment amount of the target branch air valve corresponding to the target storage location is determined. The first preset coefficient set includes a first proportional coefficient, a first integral coefficient, and a first differential coefficient.

[0046] For example, the first temperature difference between the actual measured temperature and the preset temperature is e1(t) = T - Tset.

[0047] Based on the first temperature difference and the first preset coefficient set, the adjustment amount of the target branch air valve corresponding to the target storage location is determined. The first proportional coefficient is the coefficient corresponding to the proportional term in the PID controller, the first integral coefficient is the coefficient corresponding to the integral term, and the first derivative coefficient is the coefficient corresponding to the derivative term.

[0048] For example, the formula for calculating this adjustment amount using a PID controller can be as follows: (1) Where Output1 is the adjustment amount of the target branch damper, Kp1 is the first proportional coefficient, Ki1 is the first integral coefficient, and Kd1 is the first differential coefficient. Kp1×e1(t) is the proportional term. The integral term is Kd1×de1(t) / dt, and the differential term is Kd1×de1(t) / dt.

[0049] The above calculation method ensures that the adjustment quantity Output1 simultaneously considers the current, past, and future error trends. Specifically, the proportional term Kp1×e1(t) is responsible for quickly responding to the first temperature difference at the current moment. The larger the temperature difference, the larger the output of this term, driving the damper to open rapidly to enhance heat dissipation; when the temperature difference approaches zero, the contribution of this term also approaches zero. However, the proportional term alone cannot completely eliminate the temperature difference, often leaving a fixed steady-state error.

[0050] Integral term This is responsible for eliminating residual temperature differences accumulated over time. As long as a temperature difference exists, the integral term continues to accumulate and increase the output, gradually pushing the air valve to open further until the temperature difference is completely zero, ensuring the accuracy of the storage temperature.

[0051] The differential term Kd1×de1(t) / dt is responsible for predicting the future trend of temperature difference. When the actual measured temperature rapidly approaches the preset temperature (the rate of change of temperature difference is large and negative), the differential term will generate a reverse suppression signal to reduce the opening increment of the air valve in advance, thereby effectively preventing temperature "overshoot" (i.e., the temperature exceeds the preset value and then drops sharply) caused by excessive air valve action.

[0052] By summing the outputs of these three items according to their respective coefficients, the final result is a target branch damper adjustment amount that can ensure response speed, eliminate static error, and suppress oscillation.

[0053] The above technical solution achieves rapid, accurate, and stable closed-loop control of the storage temperature at the target storage location by using a proportional term to quickly respond to the current temperature difference, an integral term to eliminate historical accumulated static error, and a differential term to suppress future overshoot trends, and by using these three terms in conjunction to calculate the adjustment amount of the air valve.

[0054] To achieve predictive feedforward control, the initial air volume of the target storage location is predicted before adjusting the damper opening, and further adjustments are made based on this prediction. This will be discussed in detail in the following embodiments.

[0055] In some embodiments, such as Figure 3 As shown, the method also includes: Step 301: Based on the voltage and current of the target storage location, the initial air volume of the target storage location is determined using a temperature rise prediction model. The opening degree of the target branch damper corresponding to the initial air volume is the initial opening degree. The temperature rise prediction model is obtained based on the formation stage, current curve, and historical temperature rise rate of the target storage location.

[0056] In this step, for example, the voltage and current of the target storage location can be obtained through sensors in the voltage and current acquisition unit. Based on the voltage and current of the target storage location, the initial air volume of the target storage location is determined using a temperature rise prediction model.

[0057] The temperature rise prediction model is derived from the formation stage, current curve, and historical temperature rise rate of the target storage location.

[0058] For example, the formation stage refers to the specific process of charging and discharging the battery in the storage location, which is usually divided into different stages such as constant current charging, constant voltage charging, resting, and discharging. The heat generation characteristics of each stage are significantly different. For example, the heat generation is relatively stable in the constant current stage, while the heat generation gradually decreases in the constant voltage stage. The current curve records the change of current over time throughout the entire formation process, including the magnitude, direction, and rate of change of the current. Since the battery's heat generation power is approximately proportional to the square of the current, the current curve directly determines the heat generation per unit time. The historical temperature rise rate is data obtained by repeatedly measuring the temperature rise over time in the same or similar storage locations under the same formation conditions, reflecting the comprehensive thermal response characteristics under actual heat transfer and dissipation conditions.

[0059] For example, a temperature rise prediction model can be obtained by training the model multiple times based on the formation stage, current curve, and historical temperature rise rate.

[0060] After obtaining the temperature rise prediction model, the initial air volume is obtained by using the temperature rise prediction model based on the voltage and current of the target storage location.

[0061] Based on the adjustment amount of the target branch damper, control the target branch damper to adjust its opening to the target opening, so as to deliver air volume to the target storage location at the target opening, including: Step 302: After the first adjustment of the target branch air valve, based on the initial opening and the adjustment amount, control the target branch air valve to adjust the valve opening from the initial opening to the target opening, so as to deliver air volume to the target storage location at the target opening.

[0062] When adjusting the target branch damper for the first time, the adjustment amount can be added to the initial opening to obtain the final target opening, so as to deliver air volume to the target storage location at the target opening.

[0063] The above technical solution obtains a temperature rise prediction model based on the formation stage, temperature rise rate, and current curve. According to the current and voltage of the target storage location and the obtained temperature rise prediction model, the initial air volume of the target storage location is input in advance, rather than adjusting after the temperature exceeds the limit, which reduces temperature overshoot and improves the temperature consistency between different storage locations.

[0064] In another embodiment, based on the adjustment amount of the target branch damper, the target branch damper is controlled to adjust its opening to a target opening, so as to deliver airflow to the target storage location at the target opening, including: After the charging and discharging equipment is started, the initial opening degree of the branch air valve is 50%, and the main fan runs at 50% of the rated speed. After obtaining the adjustment amount of the target branch air valve, the target branch air valve is controlled to adjust the air valve opening from the initial opening degree to the target opening degree, so as to deliver air volume to the target storage location at the target opening degree.

[0065] The following examples illustrate how to determine the initial air volume of a target storage location using a temperature rise prediction model based on the voltage and current of the target storage location.

[0066] In some embodiments, the initial air volume of the target storage location is determined using a temperature rise prediction model based on the voltage and current of the target storage location, such as... Figure 4 As shown, it includes: Step 401: Obtain the heat generation power of the target storage location based on the voltage and current of the target storage location.

[0067] For example, the heat generation power of the target storage location can consist of two parts: a basic heat generation power Qdx and a heat generation power Qtq of a single module of the cutting plate.

[0068] For example, Qdx = K × I 2 Where I is the current, K is the reaction heat coefficient, Qtq=UI×γ / (1-γ), U is the voltage, and γ is the efficiency of the cutting plate (90-97%). Assuming that each storage location has n batteries charging and discharging, then each storage location corresponds to n cutting plate modules. Therefore, the heat generation power of the target storage location is Q=n(Qdx+Qtq).

[0069] Step 402: Obtain the temperature rise value of the target storage location based on the heat production power and temperature rise prediction model.

[0070] For example, the temperature rise prediction model can be ΔT=f(Q,t), where the heat generation power of the target storage location is input into the temperature rise prediction model to obtain the corresponding temperature rise value of the target storage location after a preset time period.

[0071] Step 403: Determine the actual predicted temperature of the target storage location based on the initial temperature and temperature rise value. The actual predicted temperature corresponds to the actual measured temperature.

[0072] Based on the sum of the initial temperature obtained at the first moment and the predicted temperature rise, the actual predicted temperature at the second moment after the first moment is obtained. The prediction time of the actual predicted temperature mentioned here can correspond to the measurement time of the actual measured temperature mentioned above. For example, the two times can be the same. Here, the initial air volume at the second moment is obtained. Based on the adjustment amount obtained from the actual measured temperature at the second moment and the initial air volume, the opening degree of the branch air valve is adjusted to obtain the target air volume of the target storage location at the second moment.

[0073] Step 404: Based on the actual predicted temperature, determine the initial air volume of the target storage location corresponding to the actual predicted temperature from the first mapping relationship. The first mapping relationship is used to indicate the correspondence between multiple temperatures and multiple air volumes.

[0074] In the above steps, the actual predicted temperature is obtained, and the initial air volume of the target storage location corresponding to the actual predicted air volume is found in the first mapping relationship. The first mapping relationship is the correspondence between the predicted temperature of multiple storage locations and multiple air volumes.

[0075] The above technical solution calculates the heat generation power of the target storage location using current and voltage. Based on this, Q is input into the temperature rise prediction model ΔT=f(Q,t) to obtain the temperature rise value after a preset time period. This value is then superimposed with the initial temperature to obtain the actual predicted temperature corresponding to the actual measurement time. Finally, the initial air volume is quickly determined by looking up a table using a pre-calibrated temperature-airflow mapping relationship. On the one hand, this avoids the inherent response delay of traditional over-temperature adjustment methods, ensuring the storage location temperature remains stable. On the other hand, since each storage location calculates its initial airflow based on the voltage, current, and temperature rise prediction model, and uses the same mapping relationship, temperature consistency between different storage locations can be improved.

[0076] In another embodiment, the first mapping relationship may also refer to the correspondence between multiple different temperature ranges and multiple air volumes. The air volume corresponding to the temperature range that the actual predicted temperature matches is selected as the initial air volume of the target storage location.

[0077] When controlling the airflow of each storage location separately, adjusting the opening of the air valve in one storage location will adjust the corresponding airflow, which may interfere with the airflow of other storage locations. In order to avoid crosstalk between the air ducts of each storage location during the process of adjusting each storage location separately, the following example describes how to maintain the static pressure of the main air duct at the preset static pressure using a PID controller.

[0078] In some embodiments, determining the operating frequency of the main fan based on the pressure difference between a preset static pressure and the current static pressure of the main air duct includes: The operating frequency of the main fan is determined based on the pressure difference and the second preset coefficient set, which includes the second proportional coefficient, the second integral coefficient, and the second differential coefficient.

[0079] For example, the pressure difference e2(t) = P - Pset, where P is the current static pressure and Pset is the preset static pressure.

[0080] For example, the preset static pressure Pset can be a predetermined value in the range of 80–120 Pa, or it can be selected as 1 / 3 of the maximum wind pressure of the main fan based on the relationship between wind pressure and air volume in the fan's performance curve.

[0081] Based on the pressure difference and the second preset coefficient set, the adjustment amount of the target branch air valve corresponding to the target storage location is determined. The second proportional coefficient is the coefficient corresponding to the proportional term in the PID controller, the second integral coefficient is the coefficient corresponding to the integral term, and the second derivative coefficient is the coefficient corresponding to the derivative term.

[0082] Based on the pressure difference e2(t) = P - Pset, this pressure difference is used as the input to the PID controller, and the output value is the operating frequency of the main fan.

[0083] For example, the formula for determining the operating frequency of the main fan using a PID controller can be as follows: (2) Where Output2 is the operating frequency of the main fan, Kp2 is the second proportional coefficient, Ki2 is the second integral coefficient, and Kd2 is the second differential coefficient. Kp2×e2(t) is the proportional term. The integral term is Kd2×de2(t) / dt, and the differential term is Kd2×de2(t) / dt.

[0084] The proportional term Kp²×e²(t) is used to provide an immediate response to the current pressure difference. When the actual static pressure deviates from the preset static pressure, this term generates a frequency adjustment that is proportional to the magnitude of the deviation. The larger the deviation, the larger the adjustment, thus achieving rapid correction. The integral term... To eliminate long-term accumulated static deviations, even if the proportional term has brought the static pressure close to the preset value, there may still be a small, persistent deviation. The integral term accumulates historical deviations and continuously increases the output until the steady-state deviation is completely eliminated, thereby ensuring that the static pressure in the main air duct can be maintained at the preset static pressure. The derivative term Kd2×de2(t) / dt makes advance adjustments based on the changing trend of the pressure difference. When the pressure difference is rapidly increasing or decreasing, the derivative term can predict this changing trend and output a reverse correction amount in advance, suppressing the violent fluctuations of static pressure and playing a role in increasing system stability and reducing overshoot.

[0085] For example, the three coefficients Kp2, Ki2, and Kd2 (i.e., the second preset coefficient set) need to be determined to have appropriate values ​​through on-site debugging or engineering tuning methods. Finally, the PID controller superimposes these three calculation results and continuously and dynamically adjusts the operating frequency of the main fan: when the current static pressure is lower than the preset static pressure (e2(t) is negative), the output frequency increases and the fan accelerates to increase the static pressure; when the current static pressure is higher than the preset static pressure (e2(t) is positive), the output frequency decreases and the fan decelerates to reduce the static pressure, thereby stabilizing the static pressure of the main air duct.

[0086] The above technical solution achieves stable closed-loop control of the main air duct by using a proportional term to quickly respond to pressure difference, an integral term to eliminate historical accumulated static error, and a differential term to suppress future overshoot trends, with the three terms working together to calculate the operating frequency of the main fan.

[0087] In other embodiments, a simplified mathematical model describing the dynamic response of static pressure in the main air duct can be established. In each control cycle, based on the current pressure difference and the model, the static pressure change trajectory under different frequency sequences in the next few steps is predicted. Then, an optimal frequency sequence is selected so that the future pressure difference is minimized and the energy consumption is minimized.

[0088] At the beginning of each control cycle, the actual static pressure of the main duct, the current operating frequency of the main fan, and the total equivalent opening of each branch damper (reflecting overall resistance characteristics) are collected. Based on these state variables, a discrete state-space model or a first-order inertial plus time-delay model is constructed to express the dynamic relationship between fan frequency changes and static pressure response. Subsequently, the model predictive controller enumerates or optimizes a series of candidate main fan frequency sequences within a preset prediction time domain (e.g., the next 5-10 control cycles). For each sequence, the above mathematical model is used to recursively predict the static pressure change trajectory for each future step, and the corresponding predicted pressure difference (i.e., the difference between the preset static pressure and the predicted static pressure) and fan energy consumption (usually proportional to the square or cube of the frequency) are calculated. By defining a cost function that comprehensively considers the cumulative sum of the absolute values ​​of the pressure difference and energy consumption, the controller selects the optimal frequency sequence that minimizes this cost function from all candidate sequences and applies the first frequency value in the sequence as the control output of the current cycle to the main fan. In the next cycle, the actual static pressure is remeasured and the above rolling optimization process is repeated. This effectively reduces unnecessary frequency increase energy consumption of the fan while suppressing crosstalk caused by the adjustment of the air valves in each storage location and maintaining the stability of the static pressure in the main air duct. This achieves static pressure control that balances anti-interference performance and economy.

[0089] The following examples illustrate how to ensure the safety of charging equipment when there are anomalies in the target storage location.

[0090] In some embodiments, the method further includes: Obtain the temperature rise rate of the target storage location within a preset time period; Obtain the temperature rise rate of the target storage location within a preset time. The target storage location can be any one of multiple storage locations. In this step, the temperature rise rate of each storage location within the preset time is obtained. If the temperature rise rate of the target storage location is less than or equal to the preset safe temperature rise threshold, the target branch air valve of the target storage location is adjusted.

[0091] If the temperature rise rate of the first target storage location exceeds the temperature rise threshold among multiple storage locations, the opening degree of the air valve of the first target storage location is controlled to be opened to the maximum opening degree. If the temperature rise rate of one or more target storage locations (first target storage location) exceeds the temperature rise threshold, in order to accelerate heat dissipation, the opening degree of the air valve of the first target storage location is controlled to open to the maximum opening degree. For example, the air valve opening degree can be opened to 100% to enhance the exhaust of the storage location.

[0092] Alternatively, if the actual measured temperature of the second target storage location is greater than the first temperature threshold among multiple storage locations, the operating frequency of the main fan is increased to isolate the second target storage location from other storage locations among the multiple storage locations, and an alarm is output to indicate that there is an anomaly in the second target storage location.

[0093] If the actual measured temperature of the target storage location is less than or equal to the first temperature threshold, adjust the target branch air valve of the target storage location.

[0094] If, among multiple storage locations, the actual measured temperature of a second target storage location (one or more target storage locations) exceeds a first temperature threshold, the temperature of this second target storage location is considered excessively high, resulting in an anomaly. Therefore, to ensure safety, the operating frequency of the main fan is increased to isolate the abnormal second target storage location from the other storage locations among the multiple storage locations, and an alarm is output to notify operators to intervene promptly. For example, the alarm could be an audible and visual alarm.

[0095] After the above-mentioned anomalies are resolved, the charging equipment continues to operate normally. If the anomaly is not resolved, the shutdown protection is triggered.

[0096] The above technical solution establishes a tiered safety protection and fault response mechanism by real-time monitoring of the temperature rise rate and actual measured temperature of each storage location within a preset time period. Specifically, when the temperature rise rate of a target storage location is less than or equal to a preset temperature rise threshold, its branch dampers are finely adjusted to achieve precise temperature control. If the temperature rise rate of the first target storage location exceeds the temperature rise threshold, it indicates an abnormally aggravated overheating at that location. Its damper opening should be immediately forced open to its maximum value to maximize the exhaust and heat dissipation capacity of that location, thereby rapidly dissipating heat before the temperature rises further. Furthermore, if the actual measured temperature of a second target storage location exceeds a higher first temperature threshold, it is determined that the location has entered an abnormally high-temperature state. At this point, higher-level protection measures are immediately implemented: the operating frequency of the main fan is increased to enhance the exhaust capacity of the charging and discharging equipment; the abnormal storage location is isolated from other normal storage locations in the charging and discharging system to prevent heat diffusion or potential thermal runaway risks from affecting adjacent storage locations; and audible and visual alarms are output to notify operators to intervene promptly. Once the above-mentioned anomaly is successfully eliminated, the charging and discharging equipment can continue to operate normally; if the anomaly is not eliminated, the final shutdown protection will be triggered to ensure the absolute safety of the charging and discharging equipment and the battery.

[0097] The following examples illustrate the tiered adjustment after calculating the adjustment amount for multiple storage locations.

[0098] In some embodiments, such as Figure 5 As shown, the method also includes: Step 501: Obtain the maximum temperature of the charging and discharging equipment and multiple second temperature differences between multiple storage locations.

[0099] For example, the temperature of the charging and discharging equipment can be obtained by an ambient temperature sensor that is evenly distributed throughout the charging and discharging equipment (factory), and the ambient temperature sensor can cover different layers of height.

[0100] Calculate the maximum temperature of the charging equipment (factory) and multiple second temperature differences for the temperature of each of the multiple storage locations.

[0101] Step 502: Determine at least one storage location from the multiple second temperature differences that corresponds to a second temperature difference greater than the second temperature threshold. The adjustment priority of at least one storage location is higher than the adjustment priority of other storage locations. The adjustment time of storage locations with higher adjustment priority is earlier than the adjustment time of storage locations with lower adjustment priority. Other storage locations are storage locations other than at least one storage location among the multiple storage locations.

[0102] From multiple second temperature differences, determine at least one storage location corresponding to a second temperature difference greater than a second temperature threshold. This at least one storage location can be considered as the storage location corresponding to the high-temperature area within the charging and discharging equipment, and should be adjusted preferentially.

[0103] The adjustment priority of at least one storage location is higher than that of other storage locations. The higher the adjustment priority, the more likely the control branch air valve will adjust the air valve opening to the target opening, thereby achieving priority adjustment of the storage location corresponding to the high temperature area.

[0104] Based on the adjustment amount of the target branch damper, control the target branch damper to adjust its opening to the target opening, including: Step 503: According to the adjustment priority of the target storage location, control the target branch air valve according to the adjustment amount of the target branch air valve corresponding to the target storage location.

[0105] The charging equipment executes the adjustment amount of the branch air valve corresponding to each target storage location one by one, in descending order of adjustment priority.

[0106] The above technical solution ensures that when heat dissipation resources (such as total air volume and main fan static pressure capacity) are limited or multiple storage locations need to make significant adjustments to their air valves in a short period of time, the storage location that is most urgent and in need of cooling can obtain priority in air volume adjustment. This avoids competition caused by the simultaneous operation of multiple valves, ensuring both rapid response capability of temperature control and stability of charging and discharging storage locations, ultimately achieving independent and orderly precise control of multiple storage locations.

[0107] In another embodiment, when the second temperature difference of at least one storage location is greater than the second temperature threshold, the speed of the main fan is adjusted by the main air volume of the main air duct to ensure that the pressure difference of the main air duct is stable at <100Pa.

[0108] The following embodiments provide a comprehensive overview of the control methods mentioned in the embodiments of this application, such as... Figure 6 As shown, it includes: The system includes a data acquisition layer 601, a predictive feedforward module 602, a static pressure stabilization benchmark module 603, independent decoupling modules for each storage location 604, and a hierarchical safety linkage module 605.

[0109] In the data acquisition layer 601, the current (I) of each storage location, the temperature (T) of the storage location temperature sensor, the voltage (U) of the pressure sensor, and the static pressure (P) of the main air duct are collected to provide data support for predictive control and independent decoupling.

[0110] After collecting the above data, data preprocessing can be performed. This includes removing interference from bathhouse data points, error correction, and data fusion. Specifically, when obtaining the temperature of the storage location, data fusion can be understood as averaging the temperatures obtained from multiple temperature sensors within that location to obtain the storage location temperature. In the predictive feedforward module 602, the initial air volume of the target storage location is determined by a temperature rise prediction model based on the voltage and current of the target storage location.

[0111] In the static pressure stabilization reference module 603, the operating frequency of the main fan is determined based on the pressure difference between the preset static pressure and the current static pressure of the main air duct, so that the static pressure of the main air duct is maintained at the preset static pressure.

[0112] In the storage location independent decoupling module 604, the target branch air valve is controlled to adjust its opening to the target opening based on the adjustment amount of the target branch air valve, so as to deliver air volume to the target storage location at the target opening. The target storage location can be any one of multiple storage locations.

[0113] In the graded safety linkage module 605, the first level is as follows: If the temperature rise rate of the first target storage location exceeds the temperature rise threshold among multiple storage locations, the opening degree of the air valve of the first target storage location is controlled to open to the maximum value. The second level is as follows: If the actual measured temperature of the second target storage location exceeds the first temperature threshold among multiple storage locations, the operating frequency of the main fan is increased, the second target storage location is isolated from the other storage locations among the multiple storage locations, and an alarm is output.

[0114] exist Figure 6 Based on the comprehensive introduction mentioned above, Figure 7 The control flowcharts in the embodiments of this application are described in detail below.

[0115] Step 701: Data Acquisition. Collect current (I), temperature (T), voltage (U), and static pressure (P) of the main air duct for each storage location to provide data support for predictive control and independent decoupling.

[0116] Step 702: Determine the initial air volume of the target storage location based on the voltage and current of the target storage location using a temperature rise prediction model.

[0117] Step 703: Determine the operating frequency of the main fan based on the pressure difference between the preset static pressure and the current static pressure of the main air duct. Step 704: Determine the adjustment amount of the target branch damper corresponding to the target storage location based on the first temperature difference between the actual measured temperature of the target storage location and the preset temperature of the target storage location. Step 705: Monitor for anomalies in the target storage location. Step 706: Classify and judge the anomaly. Step 707: Based on the adjustment amount of the target branch damper, control the target branch damper to adjust its opening to the target opening to deliver airflow to the target storage location at the target opening. Step 708: Increase the operating frequency of the main fan, isolate the second target storage location from other storage locations among the multiple storage locations, and output an alarm. Step 709: Control the damper opening of the first target storage location to its maximum opening value. Step 710: Eliminate the anomaly in the target storage location.

[0118] Step 702 predicts the initial airflow of the target storage location. Step 703 maintains the static pressure of the main air duct. With the main air duct static pressure stable, step 704 determines the adjustment amount of the target branch damper corresponding to the target storage location based on the first temperature difference between the actual measured temperature and the preset temperature of the target storage location. After obtaining the adjustment amount, step 705 monitors whether the target storage location is abnormal. If abnormal, the abnormality can be divided into two levels: if the temperature rise rate of the first target storage location exceeds the temperature rise threshold, it is a level one warning, and step 709 is executed; if the actual measured temperature of the second target storage location exceeds the first temperature threshold, it is a level two warning, and step 708 is executed. After the abnormality is resolved, the charging equipment continues to operate. If the target storage location is normal, step 707 controls the target branch damper to adjust its opening to the target opening based on the adjustment amount, so as to deliver airflow to the target storage location at the target opening. This process is repeated cyclically to adjust the airflow of each storage location.

[0119] In another embodiment, monitoring anomalies in the target storage location can be performed before calculating the adjustment amount in step 704. After an anomaly occurs, the anomaly can be directly eliminated. After the anomaly returns to normal, the adjustment amount of the target branch air valve corresponding to the target storage location can be calculated to reduce the amount of calculation and thus improve efficiency.

[0120] It should be understood that although the steps in the flowchart above are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowchart above may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0121] In some embodiments, a heat dissipation control device for a charging and discharging device is provided. The charging and discharging device includes multiple storage locations, a main air duct, a main fan, branch air ducts corresponding to each storage location, and branch air valves corresponding to each storage location. The main air duct is connected to the main fan, and the branch air ducts corresponding to each storage location are connected to both the main air duct and each storage location, so as to deliver the air volume generated by the main fan to each storage location through the branch air ducts corresponding to each storage location. The branch air valves corresponding to each storage location are installed on the branch air ducts corresponding to each storage location to control the air volume of each storage location. Figure 8 As shown, the device includes: an acquisition module 801, a determination module 802, and a control module 803, wherein: The acquisition module 801 is used to acquire the actual measured temperature of the target storage location, which can be any one of multiple storage locations.

[0122] The determining module 802 is used to determine the first temperature difference of the target storage location based on the actual measured temperature of the target storage location and the preset temperature of the target storage location; determine the operating frequency of the main fan as the target operating frequency based on the pressure difference between the preset static pressure and the current static pressure of the main air duct; control the main fan to operate at the target operating frequency so that the static pressure of the main air duct is maintained at the preset static pressure; and determine the adjustment amount of the target branch air valve corresponding to the target storage location based on the first temperature difference.

[0123] The control module 803 is used to control the target branch air valve to adjust its opening to the target opening based on the adjustment amount of the target branch air valve, so as to deliver air volume to the target storage location at the target opening.

[0124] Further limitations regarding the heat dissipation control device for charging and discharging equipment can be found in the above-mentioned limitations on the heat dissipation control device for charging and discharging equipment, and will not be repeated here. Each module in the aforementioned heat dissipation control device for charging and discharging equipment can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in hardware or independently of the processor in the terminal device, or stored in software in the memory of the terminal device, so that the processor can call and execute the operations corresponding to each module.

[0125] Another embodiment provides a computer-readable storage medium for storing a computer program. This computer program contains instructions for implementing the methods described in the embodiments of this application. By installing this computer program on a computer, the computer can execute the corresponding methods.

[0126] Another embodiment proposes a computer program product that includes computer program code. When this computer program code is run on a computer, it causes the computer to implement the methods proposed in the embodiments of this application. Thus, a user can implement these methods by using this computer program product.

[0127] In some embodiments, Figure 9 This is a schematic block diagram of the electronic device provided in the embodiments of this application.

[0128] Electronic device 900 may include: a memory 901 storing executable program code and a processor 902 coupled to the memory 901.

[0129] In this embodiment, processor 902 calls executable program code stored in memory to execute any of the methods disclosed in the embodiments of this application. Those skilled in the art will understand that... Figure 9 The electronic device structure shown does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0130] The processor 902 is the control center of the electronic device. It connects various parts of the electronic device via various interfaces and lines, and performs various functions and processes data by running or executing software programs and / or modules stored in the memory, and by calling data stored in the memory, thereby providing overall monitoring of the electronic device. Optionally, the processor may include one or more processing units; preferably, the processor may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications, and the modem processor mainly handles wireless communication. It is understood that the modem processor may also not be integrated into the processor.

[0131] The memory 901 can be used to store software programs and modules. The processor executes various functional applications and data processing of the electronic device by running the software programs and modules stored in the memory. The memory may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function, etc.; the data storage area may store data created according to the use of the electronic device, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0132] It should be understood that, in the embodiments of this application, the processor may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0133] In implementation, each step of the above method can be completed by integrated logic circuits in the processor's hardware or by instructions in software. The steps of the method disclosed in the embodiments of this application can be directly manifested as execution by a hardware processor, or as a combination of hardware and software modules within the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor executes the instructions in the memory, combining them with its hardware to complete the steps of the above method. To avoid repetition, detailed descriptions are omitted here.

[0134] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this application.

[0135] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0136] In the embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0137] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0138] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0139] If the aforementioned function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application embodiment, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0140] The above description is merely a specific implementation of the embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the embodiments of this application should be included within the protection scope of the embodiments of this application. Therefore, the protection scope of the embodiments of this application should be determined by the protection scope of the claims.

Claims

1. A heat dissipation control method for a charge-discharge device, characterized by, The charging and discharging equipment includes multiple storage locations, a main air duct, a main fan, branch air ducts corresponding to each storage location, and branch air valves corresponding to each storage location. The main air duct is connected to the main fan, and the branch air ducts corresponding to each storage location are connected to both the main air duct and each storage location, so as to deliver the air volume generated by the main fan to each storage location through the branch air ducts corresponding to each storage location. The branch air valves corresponding to each storage location are installed on the branch air ducts corresponding to each storage location to control the air volume of each storage location; the method includes: Obtain the actual measured temperature of the target storage location, which is any one of the plurality of storage locations; The first temperature difference of the target storage location is determined based on the actual measured temperature of the target storage location and the preset temperature of the target storage location. Based on the pressure difference between the preset static pressure and the current static pressure of the main air duct, the operating frequency of the main fan is determined as the target operating frequency, and the main fan is controlled to operate at the target operating frequency so that the static pressure of the main air duct is maintained at the preset static pressure. Based on the first temperature difference, determine the adjustment amount of the target branch air valve corresponding to the target storage location; Based on the adjustment amount of the target branch air valve, control the target branch air valve to adjust its opening to the target opening, so as to deliver air volume to the target storage location at the target opening.

2. The method according to claim 1, characterized in that, The step of determining the adjustment amount of the target branch air valve corresponding to the target storage location based on the first temperature difference includes: Based on the first temperature difference and the first preset coefficient set, the adjustment amount of the target branch air valve corresponding to the target storage location is determined. The first preset coefficient set includes a first proportional coefficient, a first integral coefficient, and a first differential coefficient.

3. The method according to claim 1, characterized in that, The method further includes: Based on the voltage and current of the target storage location, the initial air volume of the target storage location is determined using a temperature rise prediction model. The opening degree of the target branch air valve corresponding to the initial air volume is the initial opening degree. The temperature rise prediction model is obtained based on the formation stage, current curve, and historical temperature rise rate of the target storage location. The step of controlling the target branch air valve to adjust its opening to a target opening based on the adjustment amount of the target branch air valve, so as to deliver air volume to the target storage location at the target opening, includes: In the case of the first adjustment of the target branch air valve, based on the initial opening and the adjustment amount, the target branch air valve is controlled to adjust the valve opening from the initial opening to the target opening, so as to deliver air volume to the target storage location at the target opening.

4. The method according to claim 3, characterized in that, The step of determining the initial air volume of the target storage location using a temperature rise prediction model based on the voltage and current of the target storage location includes: The heat generation power of the target storage location is obtained based on the voltage and current of the target storage location. The temperature rise value of the target storage location is obtained based on the heat production power and the temperature rise prediction model. Based on the initial temperature of the target storage location and the temperature rise value, the actual predicted temperature of the target storage location is determined, and the actual predicted temperature corresponds to the actual measured temperature. Based on the actual predicted temperature, the initial air volume of the target storage location corresponding to the actual predicted temperature is determined from the first mapping relationship, wherein the first mapping relationship is used to indicate the correspondence between multiple temperatures and multiple air volumes.

5. The method according to claim 1, characterized in that, Determining the operating frequency of the main fan based on the pressure difference between the preset static pressure and the current static pressure of the main air duct includes: The operating frequency of the main fan is determined based on the pressure difference and the second preset coefficient set, wherein the second preset coefficient set includes a second proportional coefficient, a second integral coefficient, and a second differential coefficient.

6. The method according to claim 1, characterized in that, The method further includes: Obtain the temperature rise rate of the target storage location within a preset time period; If, among the multiple storage locations, the temperature rise rate of the first target storage location exceeds a temperature rise threshold, the opening degree of the air valve at the first target storage location is controlled to open to its maximum value; or, If the actual measured temperature of the second target storage location among the multiple storage locations is greater than the first temperature threshold, the operating frequency of the main fan is increased to isolate the second target storage location from the other storage locations among the multiple storage locations, and an alarm is output. The alarm is used to indicate that there is an anomaly in the second target storage location.

7. The method according to claim 1, characterized in that, The method further includes: The maximum temperature of the charging and discharging equipment and multiple second temperature differences between the temperatures of multiple storage locations are obtained; From the plurality of second temperature differences, at least one storage location corresponding to a second temperature difference greater than a second temperature threshold is determined. The adjustment priority of the at least one storage location is greater than the adjustment priority of other storage locations. The adjustment time of the storage location with higher adjustment priority is earlier than the adjustment time of the storage location with lower adjustment priority. The other storage locations are storage locations other than the at least one storage location among the plurality of storage locations. The step of controlling the target branch damper to adjust its opening to the target opening based on the adjustment amount of the target branch damper includes: According to the adjustment priority of the target storage location, the target branch air valve is controlled according to the adjustment amount of the target branch air valve corresponding to the target storage location.

8. A heat dissipation control device for a charging and discharging device, characterized in that, The charging and discharging equipment includes multiple storage locations, a main air duct, a main fan, branch air ducts corresponding to each storage location, and branch air valves corresponding to each storage location. The main air duct is connected to the main fan, and the branch air ducts corresponding to each storage location are connected to both the main air duct and each storage location, so as to deliver the air volume generated by the main fan to each storage location through the branch air ducts corresponding to each storage location. The branch air valves corresponding to each storage location are installed on the branch air ducts corresponding to each storage location to control the air volume of each storage location; the device includes: The acquisition module is used to acquire the actual measured temperature of the target storage location, which is any one of the plurality of storage locations; The determining module is used to determine a first temperature difference of the target storage location based on the actual measured temperature of the target storage location and the preset temperature of the target storage location; determine the operating frequency of the main fan as a target operating frequency based on the pressure difference between the preset static pressure and the current static pressure of the main air duct; control the main fan to operate at the target operating frequency so that the static pressure of the main air duct is maintained at the preset static pressure; and determine the adjustment amount of the target branch air valve corresponding to the target storage location based on the first temperature difference. The control module is used to control the target branch air valve to adjust its opening to a target opening based on the adjustment amount of the target branch air valve, so as to deliver air volume to the target storage location at the target opening.

9. An electronic device, characterized in that, It includes a processor and a memory, the memory storing a computer program, and the processor executing the computer program to implement the steps of the method according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The device stores computer instructions that, when executed by a processor, implement the steps of the method according to any one of claims 1-7.

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