An automated control method, system and medium for a graphitization furnace

Abstract

An embodiment of the present application provides an automatic control method, system and medium for a graphitization furnace. The method includes: obtaining material property parameters, analyzing based on the material property parameters and corresponding processing technologies, and generating standard temperature information; obtaining graphitization furnace control parameters, collecting real-time temperature information of the graphitization furnace according to the graphitization furnace control parameters, comparing the real-time temperature information with the standard temperature information to obtain a temperature deviation rate; determining whether the temperature deviation rate is greater than or equal to a set temperature deviation rate threshold; if it is greater than or equal to, dynamically adjusting the graphitization furnace control parameters based on correction information; if it is less than, determining that the temperature of the graphitization furnace conforms to the processing technology of the material properties; different materials with different properties correspond to different processing technologies and corresponding standard temperature controls. By obtaining the temperature information of the graphitization furnace in real time to determine whether it conforms to the standard temperature control and dynamically adjusting the control parameters, the temperature control accuracy of the graphitization furnace is improved.

Description

Technical Field

[0001] The present application relates to the field of automatic control technology, and more particularly, to an automatic control method, system and medium for a graphitization furnace. Background Art

[0002] The graphitization furnace is a key facility in the process production of the negative electrode material of lithium-ion batteries. The energy consumption during the operation of the graphitization furnace accounts for more than 60% of the negative electrode material. The graphitization process of carbon materials is an important link affecting the finished product quality of the negative electrode material. Since the graphitization furnace needs to reach a super-high temperature state of 3000 °C, its power supply heating curve has so far been entirely operated by humans based on experience and feeling, resulting in relevant production safety risks, product quality uncertainties, and excessively high production costs. Currently, battery negative electrode material manufacturers, research institutes, and related technology companies at home and abroad generally pay attention to or participate in the research and improvement of problems existing in graphitization furnace production; there are many research approaches, but no systematic results have emerged so far.

[0003] The existing temperature control method uses a thermocouple to detect the working state of the temperature inside the furnace not exceeding 1300 °C, and a hand-held infrared temperature gun near the outer edge of the furnace core is used for intermittent detection. The control parameters are adjusted according to the detection results. The above method optimizes the heating experience of manually controlling the graphitization furnace, cannot detect the real-time temperature information inside the furnace during the heating process, cannot obtain the automatic control relationship between the temperature inside the furnace and the control parameters, and cannot realize the automatic control of the graphitization furnace heating. In view of the above problems, an effective technical solution is urgently needed at present. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide an automatic control method, system and medium for a graphitization furnace, which determine whether the temperature information of the graphitization furnace meets the standard temperature control by obtaining the temperature information of the graphitization furnace in real time, and thus dynamically adjust the control parameters according to the temperature difference to improve the temperature control accuracy of the graphitization furnace.

[0005] The embodiments of the present application also provide an automatic control method for a graphitization furnace, including:

[0006] Obtain the material property parameters, analyze based on the material property parameters and the corresponding processing technology, and generate standard temperature information, where the material property parameters include material particle size, material specific heat capacity, and material thermal conductivity;

[0007] Obtain the control parameters of the graphitization furnace, collect the real-time temperature information of the graphitization furnace according to the control parameters of the graphitization furnace, and compare the real-time temperature information with the standard temperature information to obtain a temperature deviation rate, where the control parameters of the graphitization furnace include operating current, operating voltage, material input and output volume, and temperature controller parameters;

[0008] Judge whether the temperature deviation rate is greater than or equal to the set temperature deviation rate threshold;

[0009] If it is greater than or equal to, correction information is generated, and the control parameters of the graphitization furnace are dynamically adjusted based on the correction information;

[0010] If it is less than, it is determined that the temperature of the graphitization furnace meets the processing technology of the material properties.

[0011] Optionally, in the automatic control method of the graphitization furnace described in the embodiments of the present application, material property parameters are obtained, analyzed based on the material property parameters and the corresponding processing technology, and standard temperature information is generated, specifically including:

[0012] Obtain material property parameters;

[0013] Obtain the corresponding processing technology according to the material property parameters, and obtain the process configuration temperature information according to the processing technology;

[0014] Generate a compensation coefficient of the material based on the material particle size, the specific heat capacity of the material, and the thermal conductivity of the material;

[0015] Generate standard temperature information by multiplying the compensation coefficient of the material by the process configuration temperature information.

[0016] Optionally, in the automatic control method of the graphitization furnace described in the embodiments of the present application, the control parameters of the graphitization furnace are obtained, and the real-time temperature information of the graphitization furnace is collected according to the control parameters of the graphitization furnace, specifically including:

[0017] Obtain the size parameters of the graphitization furnace, divide the internal space of the graphitization furnace into multiple regions based on the size parameters, and generate multiple sub-regions;

[0018] Obtain the control parameters of the graphitization furnace;

[0019] Collect the temperature information of each sub-region based on the control parameters of the graphitization furnace, calculate the average value of the temperature information of each sub-region, and obtain the average temperature of each sub-region;

[0020] Generate the real-time temperature information of the graphitization furnace for each sub-region by multiplying the average temperature of each sub-region by the weight value of different sub-regions.

[0021] Optionally, in the automatic control method of the graphitization furnace described in the embodiments of the present application, the real-time temperature information is compared with the standard temperature information to obtain a temperature deviation rate, specifically including:

[0022] Obtain the temperature information at the current time node, generate real-time temperature information, and generate a real-time temperature curve based on the temperature information at different time nodes;

[0023] Generate a standard temperature control curve based on the standard temperature information;

[0024] Fit the real-time temperature curve with the standard temperature control curve to determine the temperature difference between the real-time temperature and the standard temperature at the same time node;

[0025] Add the standard temperature and the real-time temperature to obtain the total temperature value;

[0026] Divide the temperature difference by the total temperature value to generate a temperature deviation rate.

[0027] Optionally, in the automatic control method of the graphitization furnace described in the embodiments of the present application, if it is greater than or equal to, correction information is generated, and the control parameters of the graphitization furnace are dynamically adjusted based on the correction information, specifically including:

[0028] Compare the temperature deviation rate with the set temperature deviation rate thresholds. The set temperature deviation rate thresholds include a first deviation rate threshold and a second deviation rate threshold, and the first deviation rate threshold is less than the second deviation rate threshold;

[0029] If the temperature deviation rate is greater than the first deviation rate threshold and less than the second deviation rate threshold, correction information is generated, and the operating current and operating voltage are dynamically adjusted according to the correction information;

[0030] If the temperature deviation rate is greater than or equal to the second deviation rate threshold, warning information is generated, and an alarm alert is generated according to the warning information.

[0031] Optionally, in the automatic control method of the graphitization furnace described in the embodiments of the present application, obtaining the control parameters of the graphitization furnace and collecting the real-time temperature information of the graphitization furnace according to the control parameters of the graphitization furnace further includes:

[0032] Obtain the temperature information of multiple sub-regions, and analyze the temperature field of the internal space of the graphitization furnace based on the temperature information of the multiple sub-regions;

[0033] Analyze the temperature fields at different time nodes to obtain temperature field fluctuation information;

[0034] Generate a temperature adjustment coefficient based on the temperature field fluctuation information, and adjust the temperature information of the sub-region based on the temperature adjustment coefficient to obtain the real-time temperature information.

[0035] In a second aspect, an embodiment of the present application provides an automatic control system for a graphitization furnace. The system includes: a memory and a processor. The memory includes a program for the automatic control method of the graphitization furnace. When the program for the automatic control method of the graphitization furnace is executed by the processor, the following steps are implemented:

[0036] Obtain the material property parameters, analyze based on the material property parameters and the corresponding processing technology, and generate standard temperature information;

[0037] Obtain the control parameters of the graphitization furnace, collect the real-time temperature information of the graphitization furnace according to the control parameters of the graphitization furnace, compare the real-time temperature information with the standard temperature information, and obtain the temperature deviation rate;

[0038] Judge whether the temperature deviation rate is greater than or equal to the set temperature deviation rate threshold;

[0039] If it is greater than or equal to, generate correction information and dynamically adjust the control parameters of the graphitization furnace based on the correction information;

[0040] If it is less than, it is determined that the temperature of the graphitization furnace meets the processing technology of the material properties.

[0041] Optionally, in the automatic control system of the graphitization furnace described in the embodiments of the present application, obtain the material property parameters, analyze based on the material property parameters and the corresponding processing technology, and generate the standard temperature information, specifically including:

[0042] Obtain the material property parameters;

[0043] Obtain the corresponding processing technology according to the material property parameters, and obtain the process configuration temperature information according to the processing technology;

[0044] Generate the compensation coefficient of the material based on the material particle size, the specific heat capacity of the material and the thermal conductivity of the material;

[0045] Generate the standard temperature information by multiplying the compensation coefficient of the material by the process configuration temperature information.

[0046] Optionally, in the automatic control system of the graphitization furnace described in the embodiments of the present application, obtain the control parameters of the graphitization furnace, and collect the real-time temperature information of the graphitization furnace according to the control parameters of the graphitization furnace, specifically including:

[0047] Obtain the size parameters of the graphitization furnace, divide the internal space of the graphitization furnace into multiple regions based on the size parameters, and generate multiple sub-regions;

[0048] Obtain the control parameters of the graphitization furnace, where the control parameters of the graphitization furnace include the operating current, the operating voltage, the material input and output volume, and the temperature controller parameters;

[0049] Collect the temperature information of each sub-region based on the control parameters of the graphitization furnace, calculate the average value of the temperature information of each sub-region, and obtain the average temperature of each sub-region;

[0050] Generate the real-time temperature information of the graphitization furnace based on the average temperature of each sub-region.

[0051] In a third aspect, an embodiment of the present application further provides a computer-readable storage medium, which includes a program for the automated control method of a graphitization furnace. When the program for the automated control method of the graphitization furnace is executed by a processor, the steps of the automated control method of the graphitization furnace as described in any one of the above are implemented.

[0052] As can be seen from the above, an automated control method, system, and medium for a graphitization furnace provided by an embodiment of the present application obtain material attribute parameters, analyze based on the material attribute parameters and corresponding processing technologies, and generate standard temperature information; obtain graphitization furnace control parameters, collect real-time temperature information of the graphitization furnace according to the graphitization furnace control parameters, compare the real-time temperature information with the standard temperature information to obtain a temperature deviation rate; determine whether the temperature deviation rate is greater than or equal to a set temperature deviation rate threshold; if it is greater than or equal to, generate correction information and dynamically adjust the graphitization furnace control parameters based on the correction information; if it is less than, determine that the temperature of the graphitization furnace conforms to the processing technology of the material attributes; different materials with different attributes correspond to different processing technologies and corresponding standard temperature controls. By obtaining the temperature information of the graphitization furnace in real time to determine whether it conforms to the standard temperature control, the control parameters are dynamically adjusted according to the temperature difference, thereby improving the temperature control accuracy of the graphitization furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0054] Figure 1 It is a flowchart of the automated control method of the graphitization furnace provided by the embodiment of the present application;

[0055] Figure 2 It is a flowchart of the standard temperature information analysis method of the automated control method of the graphitization furnace provided by the embodiment of the present application;

[0056] Figure 3 It is a flowchart of the method for obtaining real-time temperature information of the graphitization furnace of the automated control method of the graphitization furnace provided by the embodiment of the present application;

[0057] Figure 4 It is a schematic diagram of the ultra-high temperature on-line temperature measuring device of the graphitization furnace of the automated control system of the graphitization furnace provided by the embodiment of the present application;

[0058] Figure 5 It is a schematic diagram of the layout of high-temperature temperature measuring points of the graphitization furnace of the automated control system of the graphitization furnace provided by the embodiment of the present application;

[0059] Figure 6 This is a schematic diagram of a graphitization furnace for the automatic control system of the graphitization furnace provided by the embodiments of the present application.

[0060] Reference numerals:

[0061] 1, truss; 2, thermocouple; 3, embedded optical temperature measuring tube; 4, infrared temperature measuring hole; 5, front temperature measuring section; 6, middle temperature measuring section; 7, rear temperature measuring section; 8, ventilation hole. Specific embodiments

[0062] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Usually, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application required to be protected, but only represents the selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0063] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0064] Please refer to Figure 1 , Figure 1 which is a flowchart of an automatic control method for a graphitization furnace in some embodiments of the present application. The automatic control method for the graphitization furnace is used in a terminal device. The automatic control method for the graphitization furnace includes the following steps:

[0065] S101, obtain material property parameters, analyze based on the material property parameters and the corresponding processing technology, and generate standard temperature information, where the material property parameters include material particle size, material specific heat capacity, and material thermal conductivity;

[0066] S102, obtain graphitization furnace control parameters, collect real-time temperature information of the graphitization furnace according to the graphitization furnace control parameters, compare the real-time temperature information with the standard temperature information, and obtain a temperature deviation rate; the graphitization furnace control parameters include operating current, operating voltage, material input and output volume, and temperature controller parameters;

[0067] S103, determine whether the temperature deviation rate is greater than or equal to the set temperature deviation rate threshold;

[0068] S104, if it is greater than or equal to, generate correction information and dynamically adjust the control parameters of the graphitization furnace based on the correction information;

[0069] S105, if it is less than, determine that the temperature of the graphitization furnace meets the processing technology of the material properties.

[0070] It should be noted that by analyzing the temperature information of the graphitization furnace at different times, comparing it with the standard temperature information, the temperature difference is judged, and the control parameters are dynamically adjusted according to the temperature difference to ensure that the temperature inside the graphitization furnace meets the requirements of the processing technology and improve the processing effect.

[0071] Please refer to Figure 2 , Figure 2 is a flowchart of the standard temperature information analysis method for an automatic control method of a graphitization furnace in some embodiments of the present application. According to the embodiments of the present invention, material property parameters are obtained, analyzed based on the material property parameters and the corresponding processing technology, and standard temperature information is generated, specifically including:

[0072] S201, obtain material property parameters;

[0073] S202, obtain the corresponding processing technology according to the material property parameters, and obtain the process configuration temperature information according to the processing technology;

[0074] S203, generate a compensation coefficient of the material based on the material particle size, specific heat capacity of the material, and thermal conductivity of the material;

[0075] S204, generate standard temperature information by multiplying the compensation coefficient of the material by the process configuration temperature information.

[0076] It should be noted that by analyzing the material properties, the material particle size can be understood as the size and distribution of particles in the material, the specific heat capacity of the material can be understood as the heat absorbed or released when the temperature of a unit mass of the material is increased or decreased by 10 degrees Celsius, and the thermal conductivity of the material can be understood as the thermal conductivity, that is, the ability of the material to directly conduct heat. Different material properties will have a certain impact on the temperature inside the graphitization furnace, so a temperature compensation coefficient is generated to dynamically compensate the temperature inside the graphitization furnace and improve the control accuracy.

[0077] Please refer to Figure 3 , Figure 3 is a flowchart of the method for obtaining the real-time temperature information of the graphitization furnace for an automatic control method of a graphitization furnace in some embodiments of the present application. According to the embodiments of the present invention, the control parameters of the graphitization furnace are obtained, and the real-time temperature information of the graphitization furnace is collected according to the control parameters of the graphitization furnace, specifically including:

[0078] S301, Obtain the size parameters of the graphitization furnace, divide the internal space of the graphitization furnace into multiple regions based on the size parameters to generate multiple sub-regions;

[0079] S302, Obtain the control parameters of the graphitization furnace;

[0080] S303, Collect the temperature information of each sub-region based on the control parameters of the graphitization furnace, calculate the average value of the temperature information of each sub-region to obtain the average temperature of each sub-region;

[0081] S304, Multiply the average temperature of each sub-region by the weight value of different sub-regions to generate the real-time temperature information of the graphitization furnace for each sub-region.

[0082] It should be noted that according to the graphitization furnaces of different sizes, the internal space area is divided to obtain multiple sub-regions, the different sub-regions are analyzed separately, and the weight values of the importance are generated according to the functions of different sub-regions, so as to accurately obtain the real-time temperature of the graphitization furnace.

[0083] According to the embodiments of the present invention, comparing the real-time temperature information with the standard temperature information to obtain the temperature deviation rate specifically includes:

[0084] Obtain the temperature information of the current time node to generate real-time temperature information, and generate a real-time temperature curve based on the temperature information of different time nodes;

[0085] Generate a standard temperature control curve based on the standard temperature information;

[0086] Fit the real-time temperature curve with the standard temperature control curve to judge the temperature difference between the real-time temperature and the standard temperature at the same time node;

[0087] Add the standard temperature and the real-time temperature to obtain the total temperature value;

[0088] Divide the temperature difference by the total temperature value to generate the temperature deviation rate.

[0089] It should be noted that by analyzing the coincidence comparison between the change curve of the real-time temperature and the standard temperature curve corresponding to the processing process, the temperature difference is judged, so as to obtain the temperature deviation rate at the same time node.

[0090] According to the embodiments of the present invention, if it is greater than or equal to, generate correction information, and dynamically adjust the control parameters of the graphitization furnace based on the correction information, specifically including:

[0091] Compare the temperature deviation rate with the set temperature deviation rate threshold. The set temperature deviation rate threshold includes a first deviation rate threshold and a second deviation rate threshold, and the first deviation rate threshold is less than the second deviation rate threshold;

[0092] If the temperature deviation rate is greater than the first deviation rate threshold and less than the second deviation rate threshold, correction information is generated, and the operating current and operating voltage are dynamically adjusted according to the correction information;

[0093] If the temperature deviation rate is greater than or equal to the second deviation rate threshold, warning information is generated, and an alarm alert is generated according to the warning information.

[0094] It should be noted that different temperature deviation rates are used to adjust different material properties. When the temperature deviation rate is small, only the operating current and operating voltage need to be adjusted to accurately control the temperature fluctuation of the graphitization furnace. When the temperature deviation rate is large, it is necessary to control the material inlet and outlet volume and the parameters of the temperature controller to control the temperature fluctuation from the source and improve the temperature control accuracy.

[0095] According to an embodiment of the present invention, obtaining the control parameters of the graphitization furnace, and collecting the real-time temperature information of the graphitization furnace according to the control parameters of the graphitization furnace, further includes:

[0096] Obtaining the temperature information of multiple sub-regions, and analyzing the temperature field of the internal space of the graphitization furnace based on the temperature information of the multiple sub-regions;

[0097] Analyzing the temperature fields at different time nodes to obtain temperature field fluctuation information;

[0098] Generating a temperature adjustment coefficient based on the temperature field fluctuation information, and adjusting the temperature information of the sub-region based on the temperature adjustment coefficient to obtain real-time temperature information.

[0099] It should be noted that by analyzing the changes and fluctuations of the temperature fields of multiple sub-regions, the temperature of the sub-regions is dynamically corrected to ensure the accuracy of obtaining real-time temperature information and improve the temperature control effect of the graphitization furnace.

[0100] According to an embodiment of the present invention, it further includes: obtaining the inlet temperature information and outlet temperature information of the graphitization furnace at different time nodes;

[0101] Calculating the difference between the outlet temperature information and the inlet temperature information to obtain a temperature difference;

[0102] Analyzing the temperature delay information based on the temperature difference, and generating feedback information based on the temperature delay information;

[0103] Controlling the operating parameters of the temperature controller based on the feedback information.

[0104] It should be noted that by analyzing the inlet temperature and outlet temperature at different time nodes, analyzing the time node when the outlet temperature meets the inlet temperature requirement, and calculating the temperature delay time based on this time node and the time node of the inlet temperature, the operating parameters of the temperature controller can be accurately adjusted, reducing the temperature control delay time and improving the control effect.

[0105] In a second aspect, an embodiment of the present application provides an automated control system for a graphitization furnace. The system includes: a memory and a processor. The memory includes a program for the automated control method of the graphitization furnace. When the program for the automated control method of the graphitization furnace is executed by the processor, the following steps are implemented:

[0106] Obtain material property parameters, analyze based on the material property parameters and the corresponding processing technology, and generate standard temperature information. Among them, the material property parameters include material particle size, material specific heat capacity, and material thermal conductivity;

[0107] Obtain the graphitization furnace control parameters, collect the real-time temperature information of the graphitization furnace according to the graphitization furnace control parameters, compare the real-time temperature information with the standard temperature information, and obtain the temperature deviation rate; the graphitization furnace control parameters include operating current, operating voltage, material input and output volume, and temperature controller parameters;

[0108] Judge whether the temperature deviation rate is greater than or equal to the set temperature deviation rate threshold;

[0109] If it is greater than or equal to, generate correction information, and dynamically adjust the graphitization furnace control parameters based on the correction information;

[0110] If it is less than, it is determined that the temperature of the graphitization furnace meets the processing technology of the material properties.

[0111] It should be noted that by analyzing the temperature information of the graphitization furnace at different times, comparing it with the standard temperature information, the temperature difference is judged, and the control parameters are dynamically adjusted according to the temperature difference, so as to ensure that the temperature inside the graphitization furnace meets the requirements of the processing technology and improve the processing effect.

[0112] According to an embodiment of the present invention, obtaining material property parameters, analyzing based on the material property parameters and the corresponding processing technology, and generating standard temperature information specifically includes:

[0113] Obtain material property parameters;

[0114] Obtain the corresponding processing technology according to the material property parameters, and obtain the process configuration temperature information according to the processing technology;

[0115] Generate a compensation coefficient for the material based on the material particle size, material specific heat capacity, and material thermal conductivity;

[0116] Generate standard temperature information based on multiplying the compensation coefficient of the material by the process configuration temperature information.

[0117] It should be noted that by analyzing the material properties, different material properties will have a certain impact on the temperature inside the graphitization furnace, so as to generate a temperature compensation coefficient to dynamically compensate the temperature inside the graphitization furnace and improve the control accuracy.

[0118] According to an embodiment of the present invention, obtain the control parameters of the graphitization furnace, and collect the real-time temperature information of the graphitization furnace according to the control parameters of the graphitization furnace, which specifically includes:

[0119] Obtain the size parameters of the graphitization furnace, divide the internal space of the graphitization furnace into multiple regions based on the size parameters, and generate multiple sub-regions;

[0120] Obtain the control parameters of the graphitization furnace;

[0121] Collect the temperature information of each sub-region based on the control parameters of the graphitization furnace, calculate the average value of the temperature information of each sub-region, and obtain the average temperature of each sub-region;

[0122] Generate the real-time temperature information of the graphitization furnace based on the average temperature of each sub-region.

[0123] It should be noted that according to the graphitization furnaces of different sizes, the internal space is divided into multiple sub-regions, each sub-region is analyzed separately, and the weight value of the importance is generated according to the functions of different sub-regions, so as to accurately obtain the real-time temperature of the graphitization furnace.

[0124] According to an embodiment of the present invention, compare the real-time temperature information with the standard temperature information to obtain the temperature deviation rate, which specifically includes:

[0125] Obtain the temperature information at the current time node, generate the real-time temperature information, and generate a real-time temperature curve based on the temperature information at different time nodes;

[0126] Generate a standard temperature control curve based on the standard temperature information;

[0127] Fit the real-time temperature curve with the standard temperature control curve, and judge the temperature difference between the real-time temperature and the standard temperature at the same time node;

[0128] Add the standard temperature and the real-time temperature to obtain the total temperature value;

[0129] Divide the temperature difference by the total temperature value to generate the temperature deviation rate.

[0130] It should be noted that by analyzing the coincidence comparison between the change curve of the real-time temperature and the standard temperature curve corresponding to the processing technology, the temperature difference is judged, so as to obtain the temperature deviation rate at the same time node.

[0131] According to an embodiment of the present invention, if it is greater than or equal to, then generate correction information, and dynamically adjust the control parameters of the graphitization furnace based on the correction information, which specifically includes:

[0132] Compare the temperature deviation rate with the set temperature deviation rate thresholds. The set temperature deviation rate thresholds include a first deviation rate threshold and a second deviation rate threshold, and the first deviation rate threshold is less than the second deviation rate threshold.

[0133] If the temperature deviation rate is greater than the first deviation rate threshold and less than the second deviation rate threshold, generate correction information and dynamically adjust the operating current and operating voltage according to the correction information.

[0134] If the temperature deviation rate is greater than or equal to the second deviation rate threshold, generate warning information and generate an alarm alert according to the warning information.

[0135] It should be noted that different temperature deviation rates are used for different material property adjustments. When the temperature deviation rate is small, only the operating current and operating voltage need to be adjusted to accurately control the temperature fluctuation of the graphitization furnace. When the temperature deviation rate is large, it is necessary to control the material inlet and outlet volume and the parameters of the temperature controller to control the temperature fluctuation from the source and improve the temperature control accuracy.

[0136] According to an embodiment of the present invention, obtaining the control parameters of the graphitization furnace and collecting the real-time temperature information of the graphitization furnace according to the control parameters of the graphitization furnace further includes:

[0137] Obtain the temperature information of multiple sub-regions, and analyze the temperature field of the internal space of the graphitization furnace based on the temperature information of the multiple sub-regions.

[0138] Analyze the temperature fields at different time nodes to obtain temperature field fluctuation information.

[0139] Generate a temperature adjustment coefficient based on the temperature field fluctuation information, and adjust the temperature information of the sub-region based on the temperature adjustment coefficient to obtain the real-time temperature information.

[0140] It should be noted that by analyzing the changes and fluctuations of the temperature fields of multiple sub-regions, the temperature of the sub-regions is dynamically corrected to ensure the accuracy of obtaining the real-time temperature information and improve the temperature control effect of the graphitization furnace.

[0141] According to an embodiment of the present invention, it further includes: obtaining the inlet temperature information and the outlet temperature information of the graphitization furnace at different time nodes;

[0142] Subtract the outlet temperature information from the inlet temperature information to calculate the temperature difference.

[0143] Analyze the temperature delay information based on the temperature difference, and generate feedback information based on the temperature delay information.

[0144] Control the operating parameters of the temperature controller based on the feedback information.

[0145] It should be noted that by analyzing the inlet temperature and outlet temperature at different time nodes, the time node when the outlet temperature meets the inlet temperature requirement is analyzed, and the temperature delay time is calculated based on this time node and the time node of the inlet temperature, so as to accurately adjust the operating parameters of the temperature controller, reduce the temperature control delay time, and improve the control effect.

[0146] As Figure 4 shown, a super-high temperature on-line temperature measuring device for a graphitization furnace is inserted into the infrared temperature measuring hole on one side of the graphitization furnace. This device also includes a two-color infrared high-temperature thermometer that matches the double-channel graphite tube. The two-color infrared high-temperature thermometer is tightly attached to the lower channel port of the double-channel graphite tube by a sealing gasket, and is inserted into the core area of the graphitization furnace through the infrared temperature measuring hole to obtain continuous and on-line data of high-temperature measurement, which is collected by the PLC and then transmitted to the server by the PLC.

[0147] As Figure 5 shown, a truss 1 is provided on the top of the graphitization furnace, and a thermocouple 2 is arranged on the truss 1. Infrared temperature measuring holes are arranged in the front temperature measuring section 5, middle temperature measuring section 6, and rear temperature measuring section 7 of the graphitization furnace for graphitization furnace temperature field detection. A total of 6 infrared temperature measuring holes 4 are arranged on one side of the graphitization furnace, and 5 thermocouples 2 are arranged above the front temperature measuring section 5, middle temperature measuring section 6, and rear temperature measuring section 7 of the graphitization furnace. The insertion depth of the middle thermocouple 2 is 800 mm, and that of the two side thermocouples 2 is 1600 mm. A ventilation hole 8 is provided on the graphitization furnace, and a pre-buried optical temperature measuring tube 3 is arranged in the ventilation hole 8.

[0148] As Figure 6 shown, the thermal field of the graphitization furnace is analyzed by constructing a simulation digital model (CFD). The super-high temperature detection data of the graphitization furnace, the original operation data, the geometric dimensions of the graphitization furnace, the material characteristics and other comprehensive data are used as the input boundary conditions of the CFD and input into the CFD thermal field analysis model to form a preliminary temperature-power-furnace resistance curve of the graphitization furnace.

[0149] The CFD thermal field analysis involved in the present invention inputs the preliminary temperature-power-furnace resistance curve into the PLC, and then from the PLC to the server, and then the server guides the rectifier transformer to perform automatic power transmission operation through the PLC.

[0150] The CFD thermal field analysis involved in the present invention undergoes mathematical analysis and repeated corrections to form the electrothermal field of the graphitization furnace and the optimal temperature-power-furnace resistance curve of the graphitization furnace, which is used to guide the power transmission heating in the actual production of the graphitization furnace, and finally forms an intelligent controlled graphitization furnace.

[0151] The third aspect of the present invention provides a computer-readable storage medium, which includes a program for the automated control method of a graphitization furnace. When the program for the automated control method of the graphitization furnace is executed by a processor, the steps of the automated control method of the graphitization furnace as described in any one of the above are implemented.

[0152] An automated control method, system and medium for a graphitization furnace disclosed by the present invention obtain material attribute parameters, analyze based on the material attribute parameters and corresponding processing technologies, and generate standard temperature information; obtain graphitization furnace control parameters, collect real-time temperature information of the graphitization furnace according to the graphitization furnace control parameters, compare the real-time temperature information with the standard temperature information to obtain a temperature deviation rate; determine whether the temperature deviation rate is greater than or equal to a set temperature deviation rate threshold; if it is greater than or equal to, generate correction information and dynamically adjust the graphitization furnace control parameters based on the correction information; if it is less than, determine that the temperature of the graphitization furnace conforms to the processing technology of the material attributes; different materials with different attributes correspond to different processing technologies and corresponding standard temperature controls. By obtaining the temperature information of the graphitization furnace in real time to determine whether it conforms to the standard temperature control, the control parameters are dynamically adjusted according to the temperature difference, so as to improve the temperature control accuracy of the graphitization furnace.

[0153] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces. The indirect coupling or communication connection of devices or units can be electrical, mechanical, or other forms.

[0154] The units described above as separate components may or may not be physically separated. The components shown as units may or may not be physical units; they can be located in one place or distributed to multiple network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0155] In addition, each functional unit in the embodiments of the present invention can be all integrated in one processing unit, or each unit can be separately used as a unit, or two or more units can be integrated in one unit; the above integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

[0156] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a readable storage medium. When the program is executed, it performs the steps including those of the above method embodiments. The foregoing storage medium includes various media that can store program codes, such as removable storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs.

[0157] Alternatively, if the above integrated unit of the present invention is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a readable storage medium. Based on such an understanding, the technical solution of the embodiments of the present invention, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. The software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the various embodiments of the present invention. The foregoing storage medium includes various media that can store program codes, such as removable storage devices, ROM, RAM, magnetic disks, or optical discs.

Claims

1. An automated control method for a graphitization furnace, characterized in that, Including: Obtain material property parameters, analyze based on the material property parameters and the corresponding processing technology, and generate standard temperature information. The specific steps include: Obtain the corresponding processing technology according to the material property parameters, and obtain the process configuration temperature information according to the processing technology; Generate a compensation coefficient of the material based on the material particle size, the specific heat capacity of the material, and the thermal conductivity of the material; Generate standard temperature information by multiplying the compensation coefficient of the material by the process configuration temperature information; Among them, the material property parameters include the material particle size, the specific heat capacity of the material, and the thermal conductivity of the material; Obtain the graphite furnace control parameters, and collect the real-time temperature information of the graphite furnace according to the graphite furnace control parameters. The specific steps include: Obtain the size parameters of the graphite furnace, divide the internal space of the graphite furnace into multiple regions based on the size parameters, and generate multiple sub-regions; Collect the temperature information of each sub-region based on the graphite furnace control parameters, calculate the average value of the temperature information of each sub-region, and obtain the average temperature of each sub-region; Generate the weight value of the importance based on the functions of different sub-regions; Generate the real-time temperature information of each sub-region of the graphite furnace by multiplying the weight value of different sub-regions by the average temperature of each sub-region; Obtain the temperature information of multiple sub-regions, and analyze the temperature field of the internal space of the graphite furnace based on the temperature information of multiple sub-regions; Analyze the temperature fields at different time nodes to obtain temperature field fluctuation information; Generate a temperature adjustment coefficient based on the temperature field fluctuation information, and adjust the temperature information of the sub-region based on the temperature adjustment coefficient to obtain real-time temperature information; Compare the real-time temperature information with the standard temperature information to obtain a temperature deviation rate. Among them, the graphite furnace control parameters include the operating current, the operating voltage, the material input and output volume, and the temperature controller parameters; Judge whether the temperature deviation rate is greater than or equal to the set temperature deviation rate threshold; If it is greater than or equal to, generate correction information, and dynamically adjust the graphite furnace control parameters based on the correction information; If it is less than, it is determined that the temperature of the graphite furnace meets the processing technology of the material properties.

2. The automated control method of the graphitization furnace according to claim 1, characterized in that, Compare the real-time temperature information with the standard temperature information to obtain a temperature deviation rate, specifically including: Obtain the temperature information at the current time node, generate real-time temperature information, and generate a real-time temperature curve based on the temperature information at different time nodes; Generate a standard temperature control curve based on the standard temperature information; Fit the real-time temperature curve with the standard temperature control curve, and judge the temperature difference between the real-time temperature and the standard temperature at the same time node; Add the standard temperature and the real-time temperature to obtain the total temperature value; Divide the temperature difference by the total temperature value to generate a temperature deviation rate.

3. The automated control method of the graphitization furnace according to claim 1, characterized in that If it is greater than or equal to, generate correction information, and dynamically adjust the graphite furnace control parameters based on the correction information, specifically including: Compare the temperature deviation rate with the set temperature deviation rate threshold. The set temperature deviation rate threshold includes a first deviation rate threshold and a second deviation rate threshold, and the first deviation rate threshold is less than the second deviation rate threshold; If the temperature deviation rate is greater than the first deviation rate threshold and less than the second deviation rate threshold, generate correction information, and dynamically adjust the operating current and the operating voltage according to the correction information; If the temperature deviation rate is greater than or equal to the second deviation rate threshold, a warning message is generated, and an alarm alert is generated according to the warning message.

4. An automated control system for a graphitization furnace, characterized in that, The system includes: a memory and a processor. The memory includes a program of the automatic control method for the graphitization furnace. When the program of the automatic control method for the graphitization furnace is executed by the processor, the following steps are implemented: Obtain material property parameters, analyze based on the material property parameters and the corresponding processing technology, and generate standard temperature information. The specific steps include: Obtain the corresponding processing technology according to the material property parameters, and obtain the process configuration temperature information according to the processing technology; Generate a compensation coefficient for the material based on the material particle size, the specific heat capacity of the material, and the thermal conductivity of the material; Generate standard temperature information by multiplying the compensation coefficient of the material by the process configuration temperature information; Among them, the material property parameters include the material particle size, the specific heat capacity of the material, and the thermal conductivity of the material; Obtain the graphitization furnace control parameters, and collect the real-time temperature information of the graphitization furnace according to the graphitization furnace control parameters. The specific steps include: Obtain the size parameters of the graphitization furnace, divide the internal space of the graphitization furnace into multiple regions based on the size parameters, and generate multiple sub-regions; Collect the temperature information of each sub-region based on the graphitization furnace control parameters, calculate the average value of the temperature information of each sub-region, and obtain the average temperature of each sub-region; Generate a weight value of importance according to the functions of different sub-regions; Generate the real-time temperature information of each sub-region of the graphitization furnace by multiplying the weight value of different sub-regions by the average temperature of each sub-region; Obtain the temperature information of multiple sub-regions, and analyze the temperature field of the internal space of the graphitization furnace based on the temperature information of multiple sub-regions; Analyze the temperature fields at different time nodes to obtain temperature field fluctuation information; Generate a temperature adjustment coefficient based on the temperature field fluctuation information, and adjust the temperature information of the sub-region based on the temperature adjustment coefficient to obtain the real-time temperature information; Compare the real-time temperature information with the standard temperature information to obtain the temperature deviation rate. Among them, the graphitization furnace control parameters include the operating current, the operating voltage, the material input and output volume, and the temperature controller parameters; Judge whether the temperature deviation rate is greater than or equal to the set temperature deviation rate threshold; If it is greater than or equal to, generate a correction message, and dynamically adjust the graphitization furnace control parameters based on the correction message; If it is less than, it is determined that the temperature of the graphitization furnace conforms to the processing technology of the material properties.

5. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a program of the automatic control method for the graphitization furnace. When the program of the automatic control method for the graphitization furnace is executed by the processor, the steps of the automatic control method for the graphitization furnace described in any one of claims 1 to 3 are implemented.

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