Electrode sheet heating control method and system

Abstract

A battery electrode sheet heating control method and a system. The battery electrode sheet heating control method comprises: controlling a heating device to heat a battery electrode sheet in a heating region on the basis of a preset heating parameter; acquiring the thickness of the heated battery electrode sheet; and when the thickness of the heated battery electrode sheet does not meet a thickness requirement, adjusting the preset heating parameter on the basis of the thickness of the heated battery electrode sheet, so as to control the heating device to heat a following battery electrode sheet on the basis of the adjusted preset heating parameter. By means of the battery electrode sheet heating control method, the thickness of a battery electrode sheet in a heating process can be monitored online, and a preset heating parameter can be flexibly adjusted when it is determined that the thickness of the heated battery electrode sheet does not meet the thickness requirement, thereby correcting the thickness of the battery electrode sheet in a timely manner and improving the thickness uniformity of the heated battery electrode sheet.

Description

Pole piece heating control method and system

[0001] Cross-reference to related applications

[0002] This application refers to the Chinese Patent Application No. 2024112519573 entitled "Pole piece heating control method, system, device, equipment, medium and program product" filed on September 6, 2024, which is incorporated by reference in its entirety into this application. TECHNICAL FIELD

[0003] The present application relates to the technical field of pole piece processing, in particular to a pole piece heating control method and system. BACKGROUND

[0004] The thickness of a battery pole piece is an important parameter affecting battery packaging and performance.

[0005] In the related art, during the production process of a battery pole piece, heating treatment of the battery pole piece after rolling can be achieved through a heating process after the rolling process, so that the thickness of the battery pole piece rebounds to meet the process requirements.

[0006] However, the heating control process for the battery pole piece in the related art has poor flexibility, resulting in poor thickness uniformity of the heated battery pole piece. SUMMARY

[0007] Therefore, it is necessary to provide a pole piece heating control method and system to solve the above technical problems.

[0008] In a first aspect, an embodiment of the present application provides a pole piece heating control method, which comprises:

[0009] controlling a heating device to perform heating treatment on a battery pole piece in a heating area according to a preset heating parameter;

[0010] obtaining a heated pole piece thickness of the battery pole piece;

[0011] In the case where the heated pole piece thickness does not meet the thickness requirement, adjusting the preset heating parameter based on the heated pole piece thickness to control the heating device to perform heating treatment on subsequent battery pole pieces using the adjusted preset heating parameter.

[0012] In the embodiment of the present application, online monitoring of the thickness of the battery pole piece in the heating process is achieved to flexibly adjust the preset heating parameter in the case where the heated pole piece thickness does not meet the thickness requirement, so as to timely correct the pole piece thickness and improve the thickness uniformity of the heated battery pole piece.

[0013] In one of the embodiments, the above method further comprises:

[0014] obtaining a reference thickness of the battery pole piece;

[0015] According to the thickness of the pole piece after heating and the reference thickness, it is determined whether the thickness of the pole piece after heating meets the thickness requirement.

[0016] In the embodiments of the present application, the reference thickness of the battery pole piece is introduced, and the thickness of the pole piece after heating is comprehensively determined to improve the reliability of the pole piece thickness state determination.

[0017] In one of the embodiments, the reference thickness includes the thickness of the pole piece before heating; and according to the thickness of the pole piece after heating and the reference thickness, the state of the thickness of the pole piece after heating is determined, including:

[0018] The thickness difference between the thickness of the pole piece after heating and the thickness of the pole piece before heating is obtained;

[0019] In the case that the thickness difference is within the preset difference range, it is determined that the thickness of the pole piece after heating meets the thickness requirement;

[0020] In the case that the thickness difference is not within the preset difference range, it is determined that the thickness of the pole piece after heating does not meet the thickness requirement.

[0021] In the embodiments of the present application, whether the thickness of the pole piece after heating meets the thickness requirement is determined based on the thickness difference of the battery pole piece before and after heating, which realizes the rapid judgment of the thickness of the pole piece after heating, the judgment process is simple and easy to program, and the judgment efficiency and the timeliness of the entire pole piece heating control method are simultaneously improved.

[0022] In one of the embodiments, the reference thickness includes the expected thickness of the pole piece after heating; and according to the thickness of the pole piece after heating and the reference thickness, the state of the thickness of the pole piece after heating is determined, including:

[0023] The thickness of the pole piece after heating is compared with the expected thickness;

[0024] In the case that the thickness of the pole piece after heating matches the expected thickness, it is determined that the thickness of the pole piece after heating meets the thickness requirement;

[0025] In the case that the thickness of the pole piece after heating does not match the expected thickness, it is determined that the thickness of the pole piece after heating does not meet the thickness requirement.

[0026] In the embodiments of the present application, whether the thickness of the pole piece after heating meets the thickness requirement is determined based on the expected thickness of the battery pole piece, which realizes the intuitive judgment of the thickness of the pole piece after heating, does not need to rely on other parameters, is not only convenient and fast, but also has higher reliability.

[0027] In one of the embodiments, the preset heating parameter includes the proportion of combustible gas in the mixed gas, and the mixed gas includes the combustible gas provided by the heating device and the compressed air; and the preset heating parameter is adjusted based on the thickness of the pole piece after heating, including:

[0028] obtain thickness difference values between the post-heating electrode sheet thicknesses of the different position points and the pre-heating electrode sheet thickness of the battery electrode sheet;

[0029] determine an adjusted combustible gas proportion based on the output value influence coefficient of each position point, the thickness difference value of each position point, and the current combustible gas proportion of the heating device;

[0030] control the heating device to reach the adjusted combustible gas proportion.

[0031] In the embodiments of the present application, the thickness change of the battery electrode sheet in the heating process is monitored throughout the process, so as to adjust the combustible gas proportion subsequently, thereby improving the reliability and accuracy of the heating control.

[0032] In one of the embodiments, the adjusted combustible gas proportion is determined based on the output value influence coefficient of each position point, the thickness difference value of each position point, and the current combustible gas proportion of the heating device, including:

[0033] determining a proportion parameter based on the thickness difference value of each position point;

[0034] obtaining a sum of products of the proportion parameter and the output value influence coefficient of each position point;

[0035] determining the adjusted combustible gas proportion based on the sum of products and the current combustible gas proportion.

[0036] In the embodiments of the present application, the adjusted combustible gas proportion is determined based on the thickness difference value, the output value influence coefficient, and the current combustible gas proportion of different position points, thereby improving the accuracy of the adjustment of the combustible gas proportion.

[0037] In one of the embodiments, the heating device includes a combustible gas adjusting valve and a compressed air adjusting valve; and the control of the heating device to reach the adjusted combustible gas proportion includes:

[0038] in the case where the adjusted combustible gas proportion is less than the current combustible gas proportion, at least one of decreasing the opening degree of the combustible gas adjusting valve and increasing the opening degree of the compressed air adjusting valve is controlled until the adjusted combustible gas proportion is reached.

[0039] In the embodiments of the present application, the heating device includes a combustible gas adjusting valve and a compressed air adjusting valve; in the case where the adjusted combustible gas proportion is less than the current combustible gas proportion, at least one of decreasing the opening degree of the combustible gas adjusting valve and increasing the opening degree of the compressed air adjusting valve is controlled to reduce the combustible gas proportion provided by the heating device until the adjusted combustible gas proportion is reached, thereby improving the convenience and flexibility of the control process of reducing the combustible gas proportion.

[0040] In one of the embodiments, the heating device comprises a combustible gas adjusting valve and a compressed air adjusting valve; the control of the heating device to reach the adjusted combustible gas proportion comprises:

[0041] In the case that the adjusted combustible gas proportion is greater than the current combustible gas proportion, at least one of the following is controlled: the opening degree of the combustible gas adjusting valve is increased and the opening degree of the compressed air adjusting valve is decreased, until the adjusted combustible gas proportion is reached.

[0042] In the embodiments of the present application, the heating device comprises a combustible gas adjusting valve and a compressed air adjusting valve, in the case that the adjusted combustible gas proportion is greater than the current combustible gas proportion, the opening degree of the combustible gas adjusting valve is increased and / or the opening degree of the compressed air adjusting valve is decreased, so as to increase the combustible gas proportion provided by the heating device, until the adjusted combustible gas proportion is reached, which accordingly improves the convenience and flexibility of the control process of increasing the combustible gas proportion.

[0043] In one of the embodiments, the preset heating parameter comprises a heating distance of the heating device to the battery tab; the adjustment of the preset heating parameter based on the tab thickness after heating comprises:

[0044] The thickness difference between the tab thickness after heating and the tab thickness before heating of the battery tab is obtained;

[0045] The adjusted heating distance is determined according to the thickness difference, the tab transportation speed, the initial reference heating distance and the current heating distance of the heating device.

[0046] In the embodiments of the present application, based on the accurate monitoring of the tab thickness after heating of the battery tab for subsequent adjustment of the heating distance, the reliability and accuracy of the heating control are also improved.

[0047] In one of the embodiments, in the case that the tab thickness after heating is greater than the expected thickness, the adjusted heating distance is greater than the current heating distance; in the case that the tab thickness after heating is less than the expected thickness, the adjusted heating distance is less than the current heating distance.

[0048] In the embodiments of the present application, the adjustment process of the heating distance is adapted to the influence of the heating process on the tab thickness, so the accuracy of the adjustment of the heating distance is improved.

[0049] In one of the embodiments, the above method further comprises:

[0050] The tab temperature after heating of the battery tab is obtained;

[0051] In the case that the tab temperature after heating meets the cooling condition, the subsequent battery tab is subjected to cooling treatment.

[0052] In the embodiment of the application, online monitoring of the temperature of the battery pole piece in the heating process is implemented, so that the cooling process is performed in time when the temperature of the battery pole piece after heating meets the cooling condition, and the monitoring comprehensiveness and the safety of the heating control are improved.

[0053] In one of the embodiments, the cooling condition comprises a preset temperature threshold, and the method further comprises:

[0054] In the case where the temperature of the battery pole piece after heating is greater than or equal to the preset temperature threshold, it is determined that the temperature of the battery pole piece after heating meets the cooling condition.

[0055] In the case where the temperature of the battery pole piece after heating is less than the preset temperature threshold, it is determined that the temperature of the battery pole piece after heating does not meet the cooling condition.

[0056] In the embodiment of the application, whether the temperature of the battery pole piece after heating meets the cooling condition is determined based on simple threshold judgment, the judgment process is simple and easy to program, and the judgment efficiency and the timeliness of the cooling process are simultaneously improved.

[0057] In one of the embodiments, the cooling device comprises a cooling roller and a cooling water regulating valve, and the surface of the cooling roller is in contact with the surface of the battery pole piece; the cooling device is controlled to perform the cooling process on the battery pole piece after the subsequent heating process, comprising:

[0058] obtaining a temperature difference between the temperature of the battery pole piece after heating and the preset temperature threshold;

[0059] determining an adjusted valve opening degree according to the temperature difference and the current valve opening degree of the cooling water regulating valve;

[0060] controlling the cooling water regulating valve to open at the adjusted valve opening degree, so as to change the cooling water flow entering the cooling roller, and perform the cooling process on the battery pole piece after the subsequent heating process.

[0061] In the embodiment of the application, the cooling process of the battery pole piece is realized based on the cooling roller and the cooling water regulating valve, and the process is safe, reliable and efficient.

[0062] In a second aspect, the embodiment of the application further provides a pole piece heating control system, which comprises:

[0063] a host computer, a heating device and a first thickness gauge; the host computer is connected with the heating device and the first thickness gauge respectively;

[0064] the heating device is used for performing the heating process on the battery pole piece in the heating area according to preset heating parameters;

[0065] the first thickness gauge is located behind the heating device and is used for measuring the thickness of the battery pole piece after heating;

[0066] The host computer is configured to control the heating device to perform the heating process, obtain the thickness of the heated battery pole piece, and adjust the preset heating parameter according to the thickness of the heated battery pole piece when the thickness of the heated battery pole piece does not meet the thickness requirement, so as to control the heating device to perform the heating process on the subsequent battery pole piece by using the adjusted preset heating parameter.

[0067] In the embodiment, the first thickness gauge in the pole piece heating control system is configured to monitor the thickness of the battery pole piece after the heating process, so as to adjust the preset heating parameter flexibly when the thickness of the heated battery pole piece does not meet the thickness requirement, thereby correcting the thickness of the pole piece in time and improving the thickness uniformity of the heated battery pole piece.

[0068] In one of the embodiments, the system further includes a transmission device connected to the host computer.

[0069] The transmission device is configured to carry the battery pole piece and transmit the battery pole piece under the control of the host computer.

[0070] In the embodiment, the pole piece heating control system controls the automatic transmission of the battery pole piece by using the transmission device, thereby improving the transmission efficiency of the battery pole piece and the automation degree of the heating process.

[0071] In one of the embodiments, the system further includes a second thickness gauge connected to the host computer.

[0072] The second thickness gauge is located before the heating device and is configured to measure the thickness of the battery pole piece before the heating process.

[0073] In the embodiment, the pole piece heating control system measures the thickness of the battery pole piece before and after the heating process by using the second thickness gauge and the first thickness gauge, thereby monitoring the thickness change of the battery pole piece during the heating process, so as to adjust the heating parameter subsequently and improve the reliability of the heating control.

[0074] In one of the embodiments, the heating device includes a gas transmission pipeline, a combustible gas regulating valve, and a compressed air regulating valve arranged in the transmission pipeline.

[0075] The combustible gas regulating valve is configured to adjust the flow of the combustible gas passing through the gas transmission pipeline under the control of the host computer.

[0076] The compressed air regulating valve is configured to adjust the flow of the compressed air passing through the gas transmission pipeline under the control of the host computer.

[0077] In the embodiment of the present application, the pole piece heating control system provided by the present application controls the flow of combustible gas and compressed gas through combustible gas regulating valve and compressed air regulating valve respectively to accurately adjust the proportion of combustible gas, thereby improving the accuracy of heating control.

[0078] In one of the embodiments, the heating device comprises an ignition head and a servo motor connected to the ignition head.

[0079] The ignition head is used to ignite the gas to generate a flame under the control of the host computer.

[0080] The servo motor is used to adjust the distance between the ignition head and the battery pole piece under the control of the host computer.

[0081] In the embodiment of the present application, the pole piece heating control system provided by the present application controls the distance between the ignition head and the battery pole piece through the servo motor to accurately adjust the heating distance of the battery pole piece, thereby improving the accuracy of heating control.

[0082] In one of the embodiments, the system further comprises a temperature measuring instrument connected to the host computer.

[0083] The temperature measuring instrument is located behind the heating device and is used to measure the temperature of the battery pole piece after heating.

[0084] In the embodiment of the present application, the pole piece heating control system provided by the present application realizes online monitoring of the temperature of the battery pole piece after heating in the heating process, thereby improving the comprehensiveness of monitoring and the safety of heating control.

[0085] In one of the embodiments, the system further comprises a cooling device, which comprises a cooling roller and a cooling water regulating valve, the cooling roller and the cooling water regulating valve are connected through a cooling pipeline, and the cooling roller is arranged in close contact with the battery pole piece.

[0086] The cooling water regulating valve is used to open under the control of the host computer to increase the flow of cooling water from the water supply device into the cooling roller through the cooling pipeline.

[0087] In the embodiment of the present application, the pole piece heating control system provided by the present application realizes the cooling process of the battery pole piece through the cooling roller and the cooling water regulating valve, which is safe, reliable and efficient.

[0088] In a third aspect, the embodiment of the present application further provides a pole piece heating control device, which comprises:

[0089] The heating response module is used to control the heating device to perform heating treatment on the battery pole piece in the heating area according to the preset heating parameters.

[0090] The thickness determination module is used to obtain the thickness of the battery pole piece after heating.

[0091] The parameter adjustment module is configured to adjust the preset heating parameter according to the thickness of the heated pole piece, so as to control the heating device to heat the subsequent battery pole piece by using the adjusted preset heating parameter, in the case that the thickness of the heated pole piece does not meet the thickness requirement.

[0092] In a fourth aspect, an embodiment of the present application further provides a computer device, including a memory and a processor, the memory stores a computer program, and the processor executes the computer program to realize the steps in the pole piece heating control method provided in any one of the embodiments of the first aspect.

[0093] In a fifth aspect, an embodiment of the present application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the steps in the pole piece heating control method provided in any one of the embodiments of the first aspect.

[0094] In a sixth aspect, an embodiment of the present application further provides a computer program product, including a computer program, and the computer program is executed by a processor to realize the steps in the pole piece heating control method provided in any one of the embodiments of the first aspect.

[0095] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the following will be based on the content of the description to be implemented, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below. DETAILED DESCRIPTION BRIEF DESCRIPTION OF DRAWINGS

[0096] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the drawings. In the drawings:

[0097] Fig. 1 is a structural schematic diagram of a pole piece heating control system in an embodiment;

[0098] Fig. 2 is a partial structural schematic diagram of a pole piece heating control system in an embodiment;

[0099] Fig. 3 is a flow schematic diagram of a pole piece heating control method in an embodiment;

[0100] Fig. 4 is a flow schematic diagram of a pole piece heating control method in another embodiment;

[0101] Fig. 5 is a flow schematic diagram of determining whether the thickness of the heated pole piece meets the thickness requirement in an embodiment;

[0102] FIG. 6 is a flowchart illustrating a method for determining whether the thickness of the electrode sheet after heating meets the thickness requirement in another embodiment;

[0103] FIG. 7 is a flowchart illustrating a method for adjusting the proportion of combustible gas in one embodiment;

[0104] FIG. 8 is a flowchart illustrating a method for adjusting the proportion of combustible gas in another embodiment;

[0105] FIG. 9 is a flowchart illustrating a method for adjusting the heating distance in one embodiment;

[0106] FIG. 10 is a flowchart illustrating a method for cooling the electrode sheet in one embodiment;

[0107] FIG. 11 is a flowchart illustrating a method for determining whether the temperature of the electrode sheet after heating meets the cooling condition in one embodiment;

[0108] FIG. 12 is a flowchart illustrating a method for cooling the electrode sheet in another embodiment;

[0109] FIG. 13 is a flowchart illustrating a method for controlling the heating of the electrode sheet in another embodiment;

[0110] FIG. 14 is a block diagram illustrating the structure of a device for controlling the heating of the electrode sheet in one embodiment;

[0111] FIG. 15 is a diagram illustrating the internal structure of a computer device in one embodiment.

[0112] BRIEF DESCRIPTION OF THE DRAWINGS 100 - electrode sheet heating control system; 110 - host computer; 120 - heating device; 121 - gas transmission pipeline; 122 - combustible gas regulating valve; 123 - compressed air regulating valve; 124 - ignition head; 125 - servo motor; 130 - first thickness gauge; 140 - transmission device; 150 - second thickness gauge; 160 - temperature gauge; 170 - cooling device; 171 - cooling roller; 172 - cooling water regulating valve. DETAILED DESCRIPTION

[0113] To make the objects, technical solutions, and advantages of the present application clearer, the present application will be described in further detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the present application and should not be used to limit the present application.

[0114] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the description and claims of the present application as well as the above abstract are intended to cover any and all adaptations or variations of well known methods, articles, materials, compositions, and

[0115] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0116] In the description of the embodiments of the present application, the term "and / or" is merely used to describe associated objects, and can represent the three conditions of three objects, for example, 3 and / or 4 can represent the three conditions of 3, 3 and 4, and 4. In the description of the embodiments of the present application, the term "multiple" means more than two (including two), unless otherwise explicitly and specifically defined.

[0117] The thickness of the battery pole piece is an important parameter affecting the packaging and performance of the battery. If the thickness of the battery pole piece is too thick, it will cause difficulty in later packaging, and if the thickness of the battery pole piece is too thin, it will reduce the performance of the battery. Therefore, the thickness control of the battery pole piece needs to be focused on in the production process of the battery pole piece.

[0118] The production process of the battery pole piece includes multiple processes, which generally include five processes of homogenization, coating, rolling, slitting and heating. The heating process (also referred to as "baking process") is located after the rolling process. The heating process after the rolling process can achieve heating treatment of the battery pole piece after rolling, so that the thickness of the battery pole piece rebounds to meet the process requirements. Therefore, the thickness control of the battery pole piece is essentially the heating control of the battery pole piece.

[0119] The related art generally uses an infrared radiation device that can radiate thermal energy to radiate infrared rays to the battery pole piece to achieve heating treatment of the battery pole piece, but this method cannot achieve structure solidification of the battery pole piece, and the flame heating method can take into account the heating treatment and structure solidification of the battery pole piece.

[0120] However, in the related art, whether the heating control method based on infrared radiation or flame heating is implemented, the heating control method is performed by using fixed parameters set in advance, and the actual change of the battery pole piece in the heating process is ignored, resulting in poor flexibility of the heating control process of the battery pole piece, and accordingly resulting in poor thickness uniformity of the heated battery pole piece.

[0121] Therefore, in the embodiment of the present application, a pole piece heating control method is provided. The pole piece heating control method comprises the following steps: obtaining a heated pole piece thickness of a battery pole piece; and in a case where the heated pole piece thickness does not meet a thickness requirement, adjusting preset heating parameters based on the heated pole piece thickness, so as to control a heating device to heat a subsequent battery pole piece by using the adjusted preset heating parameters, thereby realizing online monitoring of the thickness of the battery pole piece in the heating process, so as to flexibly adjust the preset heating parameters in a case where the heated pole piece thickness does not meet the thickness requirement, and timely correct the pole piece thickness, so as to improve the thickness uniformity of the battery pole piece.

[0122] The pole piece heating control method provided in the embodiment of the present application can be applied to a pole piece heating control system. Therefore, before the pole piece heating control method is described in detail, the pole piece heating control system provided in the embodiment of the present application is described first.

[0123] As shown in FIG. 1, in one embodiment, the pole piece heating control system 100 provided in the embodiment of the present application comprises:

[0124] a host computer 110, a heating device 120, and a first thickness gauge 130.

[0125] The host computer 110 is connected with the heating device 120 and the first thickness gauge 130 respectively.

[0126] The heating device 120 is configured to heat a battery pole piece in a heating area according to preset heating parameters; the first thickness gauge 130 is located behind the heating device 120, and is configured to measure a heated pole piece thickness of the battery pole piece; and the host computer 110 is configured to control the heating device 120 to heat, obtain the heated pole piece thickness of the battery pole piece, and in a case where the heated pole piece thickness does not meet a thickness requirement, adjust the preset heating parameters according to the heated pole piece thickness, so as to control the heating device 120 to heat a subsequent battery pole piece by using the adjusted preset heating parameters.

[0127] The preset heating parameters are working parameters of the heating device 120 set in advance. For example, the preset heating parameters can include at least one of a heating level, a heating temperature, a combustible gas proportion, or a heating distance.

[0128] Optionally, the heating device 120 can include a light heating device, which realizes the heating treatment of the battery tab by means of radiating heat energy through light, or a flame heating device, which realizes the heating treatment of the battery tab by means of generating flame through ignition. The heating coverage area formed by the heating device 120 is the heating area of the heating device 120. Exemplarily, the heating area can be the position area corresponding to the position of the light source or the ignition head in the heating device 120.

[0129] Optionally, the first thickness gauge 130 can include an ultrasonic thickness gauge, which determines the thickness of the battery tab based on the propagation speed of ultrasonic waves, or an isotope thickness gauge, which determines the thickness of the battery tab based on the absorption and scattering of isotope rays.

[0130] Exemplarily, the ultrasonic thickness gauge can emit ultrasonic waves to the battery tab, a part of the ultrasonic waves is reflected back to the ultrasonic thickness gauge after hitting one side surface of the battery tab, and another part of the ultrasonic waves passes through the battery tab and is reflected after hitting the other surface. The ultrasonic thickness gauge can obtain the time difference t of the two times of receiving the reflected ultrasonic waves, and determine the thickness h of the battery tab according to the time difference t and the propagation speed v of the ultrasonic waves, h = v * t. The isotope thickness gauge includes a radiation end and a detection end arranged oppositely, and the battery tab can pass between the radiation end and the detection end. The radiation end can emit radioactive isotope rays to one side surface of the battery tab, and the detection end can obtain the intensity of the radioactive isotope on the other side surface of the battery tab, and determine the thickness corresponding to the intensity as the thickness of the battery tab according to the corresponding relationship between the intensity and the thickness.

[0131] The host computer 110 can control and manage other parts in the tab heating control system 100, such as the heating device 120 and the first thickness gauge 130. Exemplarily, the host computer 110 includes a programmable logic controller (PLC), and the control and management of the heating device 120 and the first thickness gauge 130 can be realized based on the PLC through proportion, integration, and differentiation (PID) control.

[0132] The arrangement positions of the parts in the tab heating control system 100 can be pre-set, so as to arrange the first thickness gauge 130 after the heating device 120, so that the battery tab passes through the heating device 120 first and then passes through the first thickness gauge 130. Generally, the front and back surfaces of the battery tab need to be heated, and the heating control system 100 accordingly includes two groups of heating devices 120, which are arranged at positions corresponding to the front and back surfaces of the battery tab.

[0133] In the case that the battery pole piece enters the heating process, the host computer 110 can start the heating device 120 to control the heating device 120 to read the preset heating parameters, to heat the battery pole piece passing through the heating area according to the preset heating parameters, and to start the first thickness gauge 130 to control the first thickness gauge 130 to measure the thickness of the battery pole piece after the heating treatment, to obtain the heated pole piece thickness.

[0134] After obtaining the heated pole piece thickness of the battery pole piece, the host computer 110 can determine whether the heated pole piece thickness meets the thickness requirement, so as to adjust the preset heating parameters according to the heated pole piece thickness in the case that the heated pole piece thickness does not meet the thickness requirement, thereby controlling the heating device 120 to heat the subsequent battery pole piece passing through the heating area by using the adjusted preset heating parameters.

[0135] Optionally, the host computer 110 can compare the measured heated pole piece thickness with the preset thickness range, and determine that the heated pole piece thickness meets the thickness requirement in the case that the heated pole piece thickness is within the preset thickness range; otherwise, in the case that the heated pole piece thickness is not within the preset thickness range, it is determined that the heated pole piece thickness does not meet the thickness requirement.

[0136] In the embodiment of the present application, the pole piece heating control system provided includes a host computer, a heating device and a first thickness gauge; the host computer is connected with the heating device and the first thickness gauge respectively; the heating device is used to heat the battery pole piece in the heating area according to the preset heating parameters; the first thickness gauge is located behind the heating device and is used to measure the heated pole piece thickness of the battery pole piece; the host computer is used to control the heating device to perform the heating treatment, to obtain the heated pole piece thickness of the battery pole piece, and to adjust the preset heating parameters according to the heated pole piece thickness in the case that the heated pole piece thickness does not meet the thickness requirement, so as to control the heating device to heat the subsequent battery pole piece by using the adjusted preset heating parameters. The first thickness gauge in the above pole piece heating control system realizes the online monitoring of the heated thickness of the battery pole piece in the heating process, so as to flexibly adjust the preset heating parameters in the case that the heated pole piece thickness does not meet the thickness requirement, thereby timely correcting the pole piece thickness and improving the thickness uniformity of the heated battery pole piece.

[0137] In order to improve the processing efficiency of the heating process, in one of the embodiments, as shown in FIG. 2, the pole piece heating control system 100 further includes a transmission device 140 connected with the host computer 110.

[0138] The transmission device 140 is used to carry the battery pole piece and to transmit the battery pole piece under the control of the host computer 110.

[0139] Optionally, the transmission device 140 can include a transmission belt and also include an over roller to carry and transmit the battery tab. The battery tab is sequentially passed through each part in the heating control system 100 under the driving of the transmission device 140. Exemplarily, the first thickness gauge 130 is arranged after the heating device 120, and the transmission device 140 can drive the battery tab to pass through the heating device 120 first and then pass through the first thickness gauge 130.

[0140] The host computer 110 starts the heating device 120, the first thickness gauge 130 and the transmission device 140 in response to the heating process driving instruction of the battery tab, controls the transmission device 140 to read the preset motion parameters, drives the battery tab to pass through the heating area of the heating device 120 according to the preset motion parameters, and controls the heating device 120 to read the preset heating parameters and perform heating treatment on the battery tab passing through the heating area according to the preset heating parameters. The transmission device 140 continuously drives the battery tab to be transmitted to the measurement area of the first thickness gauge 130, and the host computer 110 controls the first thickness gauge 130 to measure the thickness of the battery tab after the heating treatment to obtain the tab thickness after heating.

[0141] Exemplarily, the preset motion parameters of the transmission device 140 can include the belt speed of the transmission belt and also include the linear speed of the over roller. The preset motion parameters of the transmission device 140 and the preset heating parameters of the heating device are associated with the specification of the battery tab, and the preset motion parameters and the preset heating parameters corresponding to different specifications of the battery tab are different and can be scaled proportionally.

[0142] In the embodiment of the application, the tab heating control system provided also includes a transmission device. The transmission device is used to carry the battery tab and transmit the battery tab under the control of the host computer. The tab heating control system controls the automatic transmission of the battery tab through the transmission device, which not only improves the transmission efficiency of the battery tab but also synchronously improves the automation degree of the heating process.

[0143] In actual application, the tab heating parameter adjustment not only needs the tab thickness after heating of the battery tab but also needs the tab thickness before heating of the battery tab. Therefore, in one of the embodiments, as shown in FIG. 2, the tab heating control system 100 also includes a second thickness gauge 150.

[0144] The second thickness gauge 150 is connected with the host computer 110 and is arranged before the heating device 120 to measure the tab thickness before heating of the battery tab.

[0145] Optionally, the second thickness gauge 150 can be the same as or different from the first thickness gauge 130. For example, the second thickness gauge 150 can include an ultrasonic thickness gauge configured to determine the thickness of the battery pole piece based on the propagation distance of ultrasonic waves, or an isotope thickness gauge configured to determine the thickness of the battery pole piece based on the absorption and scattering of isotope rays.

[0146] The host computer 110 can synchronously control and manage the second thickness gauge 150.

[0147] As shown in FIG. 2, the arrangement positions of the parts in the pole piece heating control system 100 can be pre-set, so that the second thickness gauge 150 is arranged before the heating device 120, and the first thickness gauge 130 is arranged after the heating device 120, so that the battery pole piece sequentially passes through the second thickness gauge 150, the heating device 120 and the first thickness gauge 130 along the moving direction F.

[0148] When the battery pole piece enters the heating process, the host computer 110 can drive the heating device 120, the first thickness gauge 130 and the second thickness gauge 150 in response to the heating process driving instruction of the battery pole piece, so as to control the second thickness gauge 150 to measure the pre-heating pole piece thickness of the battery pole piece, control the heating device 120 to read the pre-set heating parameter, perform heating treatment on the battery pole piece passing through the heating area according to the pre-set heating parameter, and control the first thickness gauge 130 to measure the thickness of the battery pole piece after the heating treatment, so as to obtain the post-heating pole piece thickness.

[0149] After obtaining the post-heating pole piece thickness of the battery pole piece, the host computer 110 can determine whether the post-heating pole piece thickness meets the thickness requirement, so as to adjust the pre-set heating parameter according to the post-heating pole piece thickness and the pre-heating pole piece thickness in the case that the post-heating pole piece thickness does not meet the thickness requirement, so as to control the heating device 120 to perform heating treatment on the subsequent battery pole piece passing through the heating area by using the adjusted pre-set heating parameter.

[0150] Optionally, the host computer 110 can obtain the thickness difference between the pre-heating pole piece thickness and the post-heating pole piece thickness of the battery pole piece, and adjust the pre-set heating parameter according to the thickness difference. For example, the pre-set heating parameter includes a heating temperature, and the host computer 110 can decrease the heating temperature in the case that the thickness difference is greater than a pre-set difference, and increase the heating temperature in the case that the thickness difference is less than the pre-set difference.

[0151] In the embodiment, the provided pole piece heating control system further comprises a second thickness gauge. The second thickness gauge is connected with the host computer and located before the heating device, and is used for measuring the thickness of the pole piece before heating. The pole piece heating control system measures the thickness of the pole piece before and after heating treatment through the second thickness gauge and the first thickness gauge, realizes full-process monitoring of the thickness change of the pole piece in the heating process, and provides subsequent heating parameter adjustment, thereby improving the reliability of the heating control.

[0152] The preset heating parameter includes a combustible gas proportion. The combustible gas proportion is the proportion (such as the volume proportion) of the combustible gas in the mixed gas provided by the heating device 120 to support combustion. Based on this, in one of the embodiments, the heating device 120 can adjust the combustible gas proportion under the control of the host computer 110. As shown in FIG. 2, the heating device 120 includes a gas transmission pipeline 121, and a combustible gas adjusting valve 122 and a compressed air adjusting valve 123 arranged on the gas transmission pipeline.

[0153] The combustible gas adjusting valve 122 is used to adjust the flow of the combustible gas through the gas transmission pipeline 121 under the control of the host computer 110; and the compressed air adjusting valve 123 is used to adjust the flow of the compressed air through the gas transmission pipeline 121 under the control of the host computer 110.

[0154] Optionally, the host computer 110 can control the combustible gas adjusting valve 122 to increase the opening degree to increase the flow of the combustible gas, or control the combustible gas adjusting valve 122 to decrease the opening degree to decrease the flow of the combustible gas; similarly, the host computer 110 can control the compressed air adjusting valve 123 to increase the opening degree to increase the flow of the compressed air, or control the compressed air adjusting valve 123 to decrease the opening degree to decrease the flow of the compressed air.

[0155] The flow of the combustible gas and the flow of the compressed air jointly affect the combustible gas proportion. For example, increasing the flow of the combustible gas or decreasing the flow of the compressed air can increase the combustible gas proportion; conversely, decreasing the flow of the combustible gas or increasing the flow of the compressed air can decrease the combustible gas proportion.

[0156] Optionally, the host computer 110 can increase the flow of the combustible gas and / or decrease the flow of the compressed air when it is determined according to the thickness of the pole piece after heating that the combustible gas proportion needs to be increased; and the host computer 110 can decrease the flow of the combustible gas and / or increase the flow of the compressed air when it is determined according to the thickness of the pole piece after heating that the combustible gas proportion needs to be decreased.

[0157] In the pole piece heating control system provided in the embodiments of the present application, the heating device comprises a gas transmission pipeline, a combustible gas adjusting valve and a compressed air adjusting valve arranged on the transmission pipeline; the combustible gas adjusting valve is configured to adjust the flow of combustible gas passing through the gas transmission pipeline under the control of the upper computer; and the compressed air adjusting valve is configured to adjust the flow of compressed air passing through the gas transmission pipeline under the control of the upper computer. The pole piece heating control system adjusts the flow of combustible gas and the flow of compressed air respectively through the combustible gas adjusting valve and the compressed air adjusting valve, so as to accurately adjust the proportion of combustible gas and improve the accuracy of heating control.

[0158] The preset heating parameter comprises a heating distance. The heating distance is the distance between the ignition head in the heating device 120 and the battery pole piece. Therefore, in one of the embodiments, the heating device 120, which comprises the ignition head 124 and the servo motor 125, can adjust the heating distance under the control of the upper computer 110.

[0159] The ignition head 124 corresponds to the position of the battery pole piece passing through the heating area and is configured to ignite the gas to generate a flame under the control of the upper computer 110. The servo motor 125 is configured to adjust the distance between the ignition head 124 and the battery pole piece under the control of the upper computer 110. The flame generated by the ignition head 124 can heat the battery pole piece and simultaneously solidify the pole piece structure.

[0160] Optionally, the upper computer 110 can control the servo motor 125 to drive the ignition head 124 to move away from the battery pole piece to increase the heating distance, or control the servo motor 125 to drive the ignition head 124 to move close to the battery pole piece to decrease the heating distance.

[0161] Optionally, the upper computer 110 can control the servo motor 125 to drive the ignition head 124 to move away from the battery pole piece to increase the heating distance when it is determined according to the thickness of the heated pole piece that the heating distance needs to be increased, or control the servo motor 125 to drive the ignition head 124 to move close to the battery pole piece to decrease the heating distance when it is determined according to the thickness of the heated pole piece that the heating distance needs to be decreased.

[0162] In the pole piece heating control system provided in the embodiments of the present application, the heating device comprises an ignition head and a servo motor connected with the ignition head; the ignition head is configured to ignite the gas to generate a flame under the control of the upper computer; and the servo motor is configured to adjust the distance between the ignition head and the battery pole piece under the control of the upper computer. The pole piece heating control system adjusts the distance between the ignition head and the battery pole piece through the servo motor, so as to accurately adjust the heating distance for the battery pole piece and improve the accuracy of heating control.

[0163] In one of the embodiments, as shown in FIG. 2, the pole piece heating control system 100 further comprises a temperature measuring instrument 160.

[0164] The temperature measuring instrument 160 is connected to the host computer 110 and is located after the heating device 120, and is used to measure the temperature of the battery pole piece after heating. For example, the temperature measuring instrument 160 is a non-contact infrared temperature measuring instrument.

[0165] The arrangement positions of each part in the pole piece heating control system 100 can be pre-set, so that the temperature measuring instrument 160 is arranged after the heating device 120, so that the battery pole piece passes through the heating device 120 first and then passes through the temperature measuring instrument 160.

[0166] In the case that the battery pole piece enters the heating process, the host computer 110 can start the temperature measuring instrument 160 in response to the heating process driving instruction of the battery pole piece, so as to control the temperature measuring instrument 160 to measure the temperature of the battery pole piece after heating, i.e., the temperature of the pole piece after heating. After obtaining the temperature of the battery pole piece after heating, the host computer 110 can determine the state of the temperature of the pole piece after heating, so as to issue an alarm or an indication for adjusting the temperature of the pole piece in the case that the temperature of the pole piece after heating does not meet the thickness requirement.

[0167] Alternatively, the host computer 110 can compare the measured temperature of the pole piece after heating with a preset temperature range, and determine that the temperature of the pole piece after heating meets the thickness requirement in the case that the temperature of the pole piece after heating is in the preset temperature range; otherwise, in the case that the temperature of the pole piece after heating is not in the preset temperature range, it is determined that the temperature of the pole piece after heating does not meet the thickness requirement.

[0168] In the embodiment of the present application, the pole piece heating control system further includes a temperature measuring instrument. The temperature measuring instrument is connected to the host computer and is located after the heating device, and is used to measure the temperature of the battery pole piece after heating. The pole piece heating control system realizes online monitoring of the temperature of the battery pole piece after heating in the heating process, and improves the monitoring comprehensiveness and the safety of the heating control.

[0169] In order to realize the temperature reduction of the pole piece, in one of the embodiments, as shown in FIG. 2, the pole piece heating control system 100 further includes a cooling device 170.

[0170] The cooling device 170 is connected to the host computer 110 and is located after the heating device 120, and the cooling device 170 is used to perform the cooling treatment on the battery pole piece after heating under the control of the host computer 110. For example, the cooling device 170 can include a fan, or can include a cooling roller in contact with the surface of the battery pole piece.

[0171] As shown in FIG. 2, the arrangement positions of the parts in the tab heating control system 100 can be preset, so that the cooling device 170 is arranged after the heating device 120, and the battery tab passes through the heating device 120 first and then the cooling device 170 along the moving direction F. In the case that the temperature measuring instrument 160 is further included in the tab heating control system 100, the temperature measuring instrument 160 can be arranged between the first thickness gauge 130 and the cooling device 170, so that the battery tab passes through the heating device 120, the cooling device 170, the temperature measuring instrument 160 and the first thickness gauge 130 in sequence along the moving direction F.

[0172] In the case that the battery tab enters the heating process, the host computer 110 can start the temperature measuring instrument 160 to measure the temperature of the battery tab after the heating process, i.e., the post-heating tab temperature, in response to the heating process driving instruction of the battery tab. Then, the host computer 110 determines the state of the post-heating tab temperature according to the post-heating tab temperature, so that the cooling device 170 is started and controls the cooling process of the battery tab after the heating process in the case that the post-heating tab temperature does not meet the thickness requirement, such as the post-heating tab temperature being greater than the preset temperature threshold.

[0173] In the embodiment of the present application, the tab heating control system further includes a cooling device. The cooling device is connected with the host computer and arranged after the heating device, and is used to perform the cooling process of the battery tab after the heating process under the control of the host computer. The cooling device in the above-mentioned tab heating control system realizes the cooling process of the battery tab, and accordingly improves the safety of the heating control.

[0174] As shown in FIG. 2, the cooling device 170 includes a cooling roller 171 and a cooling water regulating valve 172.

[0175] The cooling roller 171 is connected with the cooling water regulating valve 172 through a cooling pipeline, and is arranged in contact with the battery tab. The cooling water regulating valve 172 is used to be opened under the control of the host computer 110 to increase the cooling water flow from the water supply device into the cooling roller 171 through the cooling pipeline.

[0176] Optionally, the host computer 110 can control the cooling water regulating valve 172 to be opened to increase the cooling water flow from the water supply device into the cooling roller 171 through the cooling pipeline in the case that the post-heating tab temperature is greater than the preset temperature threshold. The host computer 110 can also control the cooling water regulating valve 172 to be closed or the opening degree to be reduced to control the cooling water not to enter the cooling roller 171 or to reduce the cooling water flow into the cooling roller 171 in the case that the post-heating tab temperature is less than the preset temperature threshold and lasts for a preset time length.

[0177] In the pole piece heating control system provided in the embodiments of the present application, the cooling device comprises a cooling roller and a cooling water regulating valve, the cooling roller and the cooling water regulating valve are connected through a cooling pipeline, and the cooling roller is arranged in close contact with the battery pole piece; the cooling water regulating valve is used to be opened under the control of the upper computer to increase the flow of cooling water from the water supply device into the cooling roller through the cooling pipeline. The pole piece heating control system realizes the cooling process of the battery pole piece through the cooling roller and the cooling water regulating valve, and the process is safe, reliable and efficient.

[0178] Those skilled in the art can understand that the structures shown in FIGS. 1 and 2 are only block diagrams of part of the structures related to the embodiments of the present application, and do not constitute a limitation on the pole piece heating control system to which the embodiments of the present application are applied. The specific pole piece heating control system can comprise more or fewer components than those shown in the figures, or combine certain components, or have a different component arrangement.

[0179] Next, the pole piece heating control method provided by the embodiments of the present application will be described in detail. Taking the upper computer in FIG. 1 as an example, in one embodiment, as shown in FIG. 3, the pole piece heating control method comprises the following steps:

[0180] S310, controlling the heating device to perform heating treatment on the battery pole piece in the heating area according to the preset heating parameters.

[0181] The heating process is located after the rolling process, and the battery pole piece is heated after being compacted by the rolling process, so as to realize the thickness rebound of the battery pole piece.

[0182] Optionally, after the operator triggers the heating process start instruction for the battery pole piece by operating the upper computer, the upper computer responds to the heating process control instruction and controls the heating device to perform heating treatment on the battery pole piece in the heating area according to the preset heating parameters. The battery pole piece can be a segmented battery pole piece after being cut, or a continuous battery pole piece without being cut.

[0183] S320, obtaining the heated pole piece thickness of the battery pole piece.

[0184] The heated pole piece thickness is the thickness of the battery pole piece after the heating treatment.

[0185] Optionally, the first thickness gauge is arranged after the heating device. After the upper computer controls the heating device to perform heating treatment on the battery pole piece, the upper computer controls the first thickness gauge to measure the thickness of the battery pole piece after the heating treatment, i.e. the heated pole piece thickness.

[0186] S330, in a case where the thickness of the heated electrode sheet does not meet the thickness requirement, adjusting the preset heating parameter based on the thickness of the heated electrode sheet to control the heating device to heat a subsequent battery electrode sheet using the adjusted preset heating parameter.

[0187] The thickness of the heated electrode sheet not meeting the thickness requirement means that the thickness of the battery electrode sheet after the heating treatment does not meet the process requirement. Exemplarily, the thickness of the heated electrode sheet can be too large, or the thickness of the heated electrode sheet can be too small. The preset heating parameter is a preset working parameter of the heating device. Exemplarily, the preset heating parameter can include at least one of a heating level, a heating temperature, a combustible gas proportion, or a heating distance.

[0188] Optionally, the host computer can obtain the thickness of the heated electrode sheet measured by the first thickness gauge, determine whether the thickness of the heated electrode sheet meets the thickness requirement according to the thickness of the heated electrode sheet, and in a case where the thickness of the heated electrode sheet does not meet the thickness requirement, adjust the preset heating parameter based on the thickness of the heated electrode sheet to control the heating device to heat a subsequent battery electrode sheet using the adjusted preset heating parameter.

[0189] In a case where the host computer determines that the thickness of the heated electrode sheet meets the thickness requirement, the host computer can maintain the preset heating parameter to control the heating device to continue to heat a subsequent battery electrode sheet using the preset heating parameter.

[0190] There are various ways to determine whether the thickness of the heated electrode sheet meets the thickness requirement according to the thickness of the heated electrode sheet. Exemplarily, the host computer can compare the measured thickness of the heated electrode sheet with a preset thickness range, and in a case where the thickness of the heated electrode sheet is within the preset thickness range, determine that the thickness of the heated electrode sheet meets the thickness requirement; otherwise, in a case where the thickness of the heated electrode sheet is not within the preset thickness range, determine that the thickness of the heated electrode sheet does not meet the thickness requirement.

[0191] The heating temperature is positively correlated with the thickness rebound degree of the battery electrode sheet, and the preset heating parameter includes the heating temperature. When the thickness of the heated electrode sheet is greater than the upper limit of the thickness in the preset thickness range, it indicates that the thickness rebound degree of the battery electrode sheet after the heating treatment is too large, and the host computer can reduce the heating temperature to reduce the thickness rebound degree of the subsequent battery electrode sheet after the heating treatment, so that the thickness of the heated electrode sheet of the subsequent battery electrode sheet is correspondingly reduced. When the thickness of the heated electrode sheet is less than the lower limit of the thickness in the preset thickness range, it indicates that the thickness rebound degree of the battery electrode sheet after the heating treatment is too small, and the host computer can increase the heating temperature to increase the thickness rebound degree of the subsequent battery electrode sheet after the heating treatment, so that the thickness of the heated electrode sheet of the subsequent battery electrode sheet is correspondingly increased.

[0192] In the embodiments of the present application, the heating device is controlled to perform heating treatment on the battery pole piece in the heating area according to the preset heating parameter, and the thickness of the battery pole piece after heating is obtained. In the case that the thickness of the battery pole piece after heating does not meet the thickness requirement, the preset heating parameter is adjusted based on the thickness of the battery pole piece after heating, so that the heating device performs heating treatment on the subsequent battery pole piece by using the adjusted preset heating parameter. In the above method, online monitoring of the thickness of the battery pole piece in the heating process is realized, so that the preset heating parameter is flexibly adjusted in the case that the thickness of the battery pole piece after heating does not meet the thickness requirement, thereby correcting the thickness of the pole piece in time and improving the thickness uniformity of the battery pole piece after heating.

[0193] Whether the thickness of the battery pole piece after heating meets the thickness requirement can be determined based on the reference thickness of the battery pole piece. In one of the embodiments, as shown in FIG. 4, the above method further includes:

[0194] S410, obtaining the reference thickness of the battery pole piece.

[0195] Optionally, the reference thickness of the battery pole piece can be the thickness of the battery pole piece before heating treatment, i.e., the thickness of the pole piece before heating, or can be the expected thickness of the battery pole piece after heating treatment.

[0196] Optionally, the second thickness gauge is arranged before the heating device, and the host computer can obtain the thickness of the battery pole piece before heating measured by the second thickness gauge as the reference thickness of the battery pole piece, or can read the expected thickness of the battery pole piece after heating treatment input by the operator in advance as the reference thickness of the battery pole piece.

[0197] S420, determining whether the thickness of the battery pole piece after heating meets the thickness requirement according to the thickness of the battery pole piece after heating and the reference thickness.

[0198] Optionally, after the host computer obtains the thickness of the battery pole piece after heating and the reference thickness, it can determine whether the thickness of the battery pole piece after heating meets the thickness requirement based on the thickness of the battery pole piece after heating and the reference thickness.

[0199] The thickness of the battery pole piece after heating will rebound after rolling, so the thickness of the battery pole piece after heating is not equal to the thickness of the pole piece before heating, and in general, the thickness of the battery pole piece after heating is greater than the thickness of the pole piece before heating and equal to the expected thickness of the battery pole piece after heating treatment.

[0200] Exemplarily, in the case that the reference thickness is the thickness of the pole piece before heating, the host computer can compare the thickness of the pole piece after heating with the thickness of the pole piece before heating, and in the case that the thickness of the pole piece after heating is equal to or less than the thickness of the pole piece before heating, it is determined that the thickness of the pole piece after heating does not meet the thickness requirement; in the case that the thickness of the pole piece after heating is greater than the thickness of the pole piece before heating, it is determined that the thickness of the pole piece after heating meets the thickness requirement. In the case that the reference thickness is the expected thickness, the host computer can obtain a thickness difference between the thickness of the pole piece after heating and the expected thickness, and in the case that the thickness difference is greater than the upper limit of the difference or less than the lower limit of the difference, it is determined that the thickness of the pole piece after heating does not meet the thickness requirement; in the case that the thickness difference is between the upper limit of the difference and the lower limit of the difference, it is determined that the thickness of the pole piece after heating meets the thickness requirement.

[0201] In the embodiments of the present application, the above method further comprises obtaining a reference thickness of the battery pole piece, so as to determine whether the thickness of the pole piece after heating meets the thickness requirement according to the thickness of the pole piece after heating and the reference thickness. In the above method, the reference thickness of the battery pole piece is introduced, and whether the thickness of the pole piece after heating meets the thickness requirement is determined comprehensively according to the thickness of the pole piece after heating, which improves the reliability of the determination of the thickness state of the pole piece.

[0202] In the case that the reference thickness comprises the thickness of the pole piece before heating, in one of the embodiments, as shown in FIG. 5, S420, determining whether the thickness of the pole piece after heating meets the thickness requirement according to the thickness of the pole piece after heating and the reference thickness, comprises:

[0203] S510, obtaining a thickness difference between the thickness of the pole piece after heating and the thickness of the pole piece before heating.

[0204] The thickness difference between the thickness of the pole piece before heating and the thickness of the pole piece after heating is the thickness of the battery pole piece that rebounds after being heated after the heating treatment. The heating parameters of the heating device directly affect the thickness of the pole piece after heating, and thus affect the thickness difference between the thickness of the pole piece before heating and the thickness of the pole piece after heating.

[0205] Optionally, after obtaining the thickness of the battery pole piece before and after the heating treatment, i.e. the thickness of the pole piece before heating and the thickness of the pole piece after heating, the host computer can obtain the thickness of the battery pole piece that rebounds after being heated after the heating treatment, i.e. the thickness difference between the thickness of the pole piece after heating and the thickness of the pole piece before heating, for subsequent determination of the state of the pole piece after heating, i.e. determination of whether the thickness of the pole piece after heating meets the thickness requirement.

[0206] S520, in the case that the thickness difference is within a preset difference range, it is determined that the thickness of the pole piece after heating meets the thickness requirement.

[0207] The thickness difference is in the preset difference range, indicating that the preset heating parameter adopted by the heating device is appropriate, so that the heated electrode thickness of the battery electrode after the heating treatment matches the actual expectation, and the heated electrode thickness of the battery electrode is normal, that is, the thickness requirement is met. In this case, the preset heating parameter does not need to be adjusted.

[0208] Optionally, the host computer can match the thickness difference with the preset difference range, and determine that the heated electrode thickness meets the thickness requirement when the thickness difference is in the preset difference range. Illustratively, the preset difference range includes an upper limit Max and a lower limit Min, and Min≤thickness difference≤Max, indicating that the thickness difference is in the preset difference range, and the host computer determines that the heated electrode thickness meets the thickness requirement.

[0209] S530, in the case where the thickness difference is not in the preset difference range, determine that the heated electrode thickness does not meet the thickness requirement.

[0210] The thickness difference is not in the preset difference range, indicating that the preset heating parameter adopted by the heating device is not appropriate, so that the heated electrode thickness of the battery electrode after the heating treatment does not match the actual expectation, and the heated electrode thickness of the battery electrode is abnormal, that is, the thickness requirement is not met. In this case, the preset heating parameter needs to be adjusted.

[0211] Optionally, the host computer can match the thickness difference with the preset difference range, and determine that the heated electrode thickness does not meet the thickness requirement when the thickness difference is not in the preset difference range. Illustratively, continuing the above example, thickness difference> Max, or thickness difference< Min, indicating that the thickness difference is not in the preset difference range, and the host computer determines that the heated electrode thickness does not meet the thickness requirement.

[0212] In the embodiments of the present application, the reference thickness includes the pre-heating electrode thickness of the battery electrode, and the thickness difference between the heated electrode thickness and the pre-heating electrode thickness is obtained to determine whether the heated electrode thickness meets the thickness requirement when the thickness difference is in the preset difference range, and determine that the heated electrode thickness does not meet the thickness requirement when the thickness difference is not in the preset difference range. In the above method, whether the heated electrode thickness meets the thickness requirement is determined based on the thickness difference of the battery electrode before and after the heating treatment, which realizes rapid judgment of the state of the heated electrode thickness, the judgment process is simple and easy to program, and the judgment efficiency and the timeliness of the entire electrode heating control method are improved.

[0213] In the case where the reference thickness includes the expected thickness of the battery electrode after the heating treatment, in one of the embodiments, as shown in FIG. 6, S420, determining the state of the heated electrode thickness according to the heated electrode thickness and the reference thickness, includes:

[0214] S610, compare the thickness of the pole piece after heating with the expected thickness.

[0215] The expected thickness is the target thickness that the battery pole piece needs to reach after the heating treatment. The heating parameters of the heating device directly affect the thickness of the pole piece after heating, and thus affect whether the thickness of the pole piece before heating matches the expected thickness. Therefore, when the thickness of the pole piece after heating matches the expected thickness, it indicates that the preset heating parameters adopted by the heating device are appropriate, so that the thickness of the pole piece after heating matches the actual expectation after the heating treatment of the battery pole piece, and accordingly indicates that the thickness of the pole piece after heating is normal, i.e., meets the thickness requirement, and in this case, the preset heating parameters do not need to be adjusted.

[0216] Alternatively, the host computer can read the pre-set expected thickness, or determine the corresponding expected thickness according to the specifications of the battery pole piece, compare the thickness of the pole piece after heating with the expected thickness, and determine the state of the thickness of the pole piece after heating based on the comparison result of the thickness of the pole piece after heating and the expected thickness, i.e., whether the thickness of the pole piece after heating meets the thickness requirement.

[0217] For example, the specifications of the battery pole piece can be represented by the type of the battery cell to which the pole piece is adapted, such as the pole piece of a blade-type battery cell or the pole piece of a cylindrical battery cell, and can also be represented by the type and size of the battery cell to which the pole piece is adapted.

[0218] S620, in the case where the thickness of the pole piece after heating matches the expected thickness, determine that the thickness of the pole piece after heating meets the thickness requirement.

[0219] When the thickness of the pole piece after heating matches the expected thickness, it indicates that the preset heating parameters adopted by the heating device are appropriate, so that the thickness of the pole piece after heating matches the actual expectation after the heating treatment of the battery pole piece, and accordingly indicates that the thickness of the pole piece after heating is normal, i.e., meets the thickness requirement, and in this case, the preset heating parameters do not need to be adjusted.

[0220] Alternatively, the host computer can compare the thickness of the pole piece after heating with the expected thickness, and in the case where the thickness of the pole piece after heating matches the expected thickness, determine that the thickness of the pole piece after heating meets the thickness requirement.

[0221] For example, in order to take into account the thickness error, the thickness of the pole piece after heating = expected thickness ± allowable error, i.e., the thickness of the pole piece after heating matches the expected thickness, and the host computer determines that the thickness of the pole piece after heating meets the thickness requirement.

[0222] S630, in the case where the thickness of the pole piece after heating does not match the expected thickness, determine that the thickness of the pole piece after heating does not meet the thickness requirement.

[0223] In the case that the thickness of the heated electrode plate does not match the expected thickness, it is indicated that the preset heating parameter adopted by the heating device is not appropriate, so that the thickness of the heated electrode plate obtained after the heating treatment of the battery electrode plate does not match the actual expectation, and the thickness of the heated electrode plate of the battery electrode plate is correspondingly abnormal, i.e., does not meet the thickness requirement. In this case, the preset heating parameter needs to be adjusted.

[0224] Optionally, the host computer can compare the thickness of the heated electrode plate with the expected thickness, and determine that the thickness of the heated electrode plate does not meet the thickness requirement in the case that the thickness of the heated electrode plate does not match the expected thickness.

[0225] Illustratively, continuing the above example, the thickness of the heated electrode plate > the expected thickness + the allowable error, or the thickness of the heated electrode plate < the expected thickness - the allowable error, i.e., it is indicated that the thickness of the heated electrode plate does not match the expected thickness, and the host computer determines that the thickness of the heated electrode plate does not meet the thickness requirement.

[0226] It should be noted that whether the thickness of the heated electrode plate meets the thickness requirement can be determined based on the thickness difference of the battery electrode plate before and after the heating treatment, or based on the thickness of the heated electrode plate and the expected thickness, which can be performed independently, simultaneously, or sequentially.

[0227] Illustratively, the host computer can first determine whether the thickness of the heated electrode plate meets the thickness requirement based on the thickness difference, and further determine whether the thickness of the heated electrode plate meets the thickness requirement based on the thickness of the heated electrode plate and the expected thickness in the case that the thickness of the heated electrode plate meets the thickness requirement. In the case that the thickness of the heated electrode plate does not meet the thickness requirement based on the thickness difference, it is determined that the thickness of the heated electrode plate does not meet the thickness requirement, and it is not necessary to determine whether the thickness of the heated electrode plate meets the thickness requirement based on the thickness of the heated electrode plate and the expected thickness.

[0228] In the embodiments of the present application, the reference thickness includes the expected thickness of the battery electrode plate after the heating treatment. By comparing the thickness of the heated electrode plate and the expected thickness, it is determined that the thickness of the heated electrode plate meets the thickness requirement in the case that the thickness of the heated electrode plate matches the expected thickness, and it is determined that the thickness of the heated electrode plate does not meet the thickness requirement in the case that the thickness of the heated electrode plate does not match the expected thickness. In the above method, whether the thickness of the heated electrode plate meets the thickness requirement is determined based on the expected thickness of the battery electrode plate, which realizes intuitive judgment of the state of the thickness of the heated electrode plate without the aid of other parameters, and is not only convenient and fast, but also has higher reliability.

[0229] The preset heating parameter includes a proportion of combustible gas in the mixed gas, and the mixed gas includes the combustible gas and compressed air provided by the heating device. Based on this, in one of the embodiments, as shown in FIG. 7, the adjustment of the preset heating parameter based on the thickness of the heated electrode plate in S330 includes:

[0230] S710, obtain thickness difference values between the heated tab thicknesses of the battery tab at different position points and the pre-heating tab thickness of the battery tab.

[0231] Optionally, the host computer can read the heated tab thicknesses of the battery tab at different position points measured by the first thickness gauge and the pre-heating tab thickness of the battery tab measured by the second thickness gauge, to obtain the thickness difference values between each heated tab thickness and the pre-heating tab thickness.

[0232] S720, determine an adjusted flammable gas proportion based on the output value influence coefficient of each position point, the thickness difference value of each position point, and the current flammable gas proportion of the heating device.

[0233] The output value influence coefficient of a position point is used to represent the influence degree of the position point on the output of the adjusted flammable gas proportion. Generally, the closer the position point is to the heating device, the greater the influence degree on the output value (i.e. the adjusted flammable gas proportion), i.e. the greater the output value influence coefficient.

[0234] Optionally, the host computer can obtain the initial value influence coefficient of each position point and read the current flammable gas proportion of the heating device, to determine the adjusted flammable gas proportion based on the output value influence coefficient of each position point, the thickness difference value, and the current flammable gas proportion of the heating device.

[0235] S730, control the heating device to reach the adjusted flammable gas proportion.

[0236] Optionally, after determining the adjusted flammable gas proportion, the host computer can control the heating device to adjust the flammable gas proportion to reach the adjusted flammable gas proportion.

[0237] In the embodiments of the present application, the preset heating parameter includes the flammable gas proportion in the mixed gas, and the mixed gas includes the flammable gas provided by the heating device and the compressed air. By obtaining the thickness difference values between the heated tab thicknesses of the battery tab at different position points and the pre-heating tab thickness of the battery tab, and determining the adjusted flammable gas proportion based on the output value influence coefficient of each position point, the thickness difference value of each position point, and the current flammable gas proportion of the heating device, the heating device is controlled to reach the adjusted flammable gas proportion. In the above method, the thickness change of the battery tab during the heating process is monitored throughout the process, to adjust the flammable gas proportion subsequently, thereby improving the reliability and accuracy of the heating control.

[0238] The adjusted combustible gas proportion can be determined based on a PID control algorithm. Based on this, in one of the embodiments, as shown in FIG. 8, the above S720, the adjusted combustible gas proportion is determined according to the output value influence coefficient of each position point, the thickness difference of each position point, and the current combustible gas proportion of the heating device, which includes:

[0239] S810, determining the proportion parameter according to the thickness difference of each position point.

[0240] Optionally, for each position point, the host computer can input the thickness difference Ek of the position point into the combustible gas proportion PID control formula to obtain the proportion parameter MVk corresponding to the position point. Wherein, the combustible gas proportion PID control formula satisfies the following formula: MVk=(Kp*Ek+Kp(1 / Ti∫_0^t Ekdt)+Kp*Td*dEk / dt)

[0241] Wherein, Kp represents the proportion coefficient, the reference value is 0.001-100.00, Ti represents the integral time, the reference value is 5-60s, and Td represents the differential time, the reference value is 5-60s.

[0242] S820, obtaining the sum of the product of the proportion parameter and the output value influence coefficient of each position point.

[0243] Optionally, after obtaining the proportion parameter of each position point, the host computer can further obtain the product of the proportion parameter and the output value influence coefficient of each position point to obtain the sum of all products.

[0244] S830, determining the adjusted combustible gas proportion according to the sum of the product and the current combustible gas proportion.

[0245] Optionally, after the host computer obtains the sum of the product between the proportion parameter and the output value influence coefficient of different position points, the host computer can determine the adjusted combustible gas proportion based on the sum of the product and the current combustible gas proportion of the heating device.

[0246] Exemplarily, the host computer can directly obtain the sum of the product and the current combustible gas proportion as the adjusted combustible gas proportion.

[0247] In practical application, the heating distance of the heating device will also have a certain influence on the combustible gas proportion. Therefore, the host computer can determine the influence coefficient according to the heating distance of the heating device, so as to determine the adjusted combustible gas proportion according to the influence coefficient, the above product, and the current combustible gas proportion, which satisfies the following relationship: SV’=SV*K+MV1*TM1+MV2*TM2……+MVk*TMk

[0248] Wherein, SV' represents the adjusted combustible gas proportion, SV represents the current combustible gas proportion, K represents the influence coefficient corresponding to the heating distance, the reference value is -0.5~0.5, and TMk represents the output value influence coefficient of the k position point.

[0249] In the embodiment of the application, the proportion parameter is determined according to the thickness difference of each position point, the sum of the products of the proportion parameter and the output value influence coefficient of each position point is obtained, and the adjusted combustible gas proportion is determined according to the sum of the products and the current combustible gas proportion. In the above method, the adjusted combustible gas proportion is determined based on the thickness difference of different position points, the output value influence coefficient and the current combustible gas proportion, thereby improving the accuracy of the adjustment of the combustible gas proportion.

[0250] In an optional embodiment, the above method of adjusting the combustible gas proportion based on the thickness of the heated pole piece is used to implement the following process:

[0251] In the case where the thickness difference is greater than the upper limit of the preset difference value, the combustible gas proportion is reduced; and in the case where the thickness difference is less than the lower limit of the preset difference value, the combustible gas proportion is increased.

[0252] Wherein, the thickness difference is the thickness of the heated pole piece minus the thickness of the unheated pole piece. The battery pole piece will rebound in thickness after being heated, so the thickness difference is positive.

[0253] The combustible gas proportion affects the heating temperature of the heating device on the battery pole piece, and the heating temperature affects the rebound degree of the battery pole piece after being heated, which in turn affects the thickness difference. Moreover, the combustible gas proportion is positively correlated with the heating temperature, the heating temperature is positively correlated with the rebound degree of the battery pole piece after being heated, and the rebound degree of the battery pole piece after being heated is positively correlated with the thickness difference. Therefore, the combustible gas proportion is positively correlated with the thickness difference.

[0254] The thickness difference being greater than the upper limit of the preset difference value indicates that the rebound degree of the battery pole piece after being heated is too large, the thickness of the heated pole piece is too large, and the heating temperature is too large, which in turn indicates that the combustible gas proportion is too large. Therefore, the combustible gas proportion needs to be reduced to reduce the heating temperature and the rebound degree of the battery pole piece after being heated, thereby reducing the thickness difference to control the reduction of the thickness of the heated pole piece.

[0255] Optionally, after the thickness difference is obtained by the upper computer, the thickness difference is compared with the upper limit of the preset difference value. In the case where the thickness difference is greater than the upper limit of the preset difference value, it is determined that the combustible gas proportion needs to be reduced under the current condition, and the combustible gas proportion of the heating device is controlled to be reduced.

[0256] The thickness difference is less than the preset lower limit, indicating that the heating rebound degree of the battery pole piece is too small, the thickness of the pole piece after heating is too small, the heating temperature is too small, and the corresponding indication is that the combustible gas proportion is too small. Therefore, the combustible gas proportion needs to be increased to increase the heating temperature and the heating rebound degree of the battery pole piece, so as to increase the thickness difference and control the increase of the thickness of the pole piece after heating.

[0257] Optionally, after the thickness difference is obtained by the upper computer, the thickness difference is compared with the preset lower limit. If the thickness difference is less than the preset lower limit, it is determined that the combustible gas proportion needs to be increased under the current condition, and the combustible gas proportion of the heating device is controlled to be increased.

[0258] The preset upper limit and the preset lower limit of the difference value can be the upper limit and the lower limit of the preset difference value range for determining the thickness state of the pole piece after heating in the foregoing embodiments. The upper computer can directly read the size relationship between the thickness difference and the preset upper limit and the preset lower limit of the difference value.

[0259] The heating device includes a combustible gas adjusting valve and a compressed air adjusting valve. Based on this, the S730 of controlling the heating device to reach the adjusted combustible gas proportion includes:

[0260] If the adjusted combustible gas proportion is less than the current combustible gas proportion, at least one of the opening degree of the combustible gas adjusting valve is controlled to be reduced and the opening degree of the compressed air adjusting valve is controlled to be increased until the adjusted combustible gas proportion is reached.

[0261] The combustible gas adjusting valve and the compressed air adjusting valve are arranged in the gas transmission pipeline. Reducing the combustible gas flow in the gas transmission pipeline and / or increasing the compressed air flow in the gas transmission pipeline can reduce the combustible gas proportion.

[0262] Optionally, if the adjusted combustible gas proportion is less than the current combustible gas proportion, the opening degree of the combustible gas adjusting valve can be controlled to be reduced to reduce the combustible gas flow, or the opening degree of the compressed air adjusting valve can be controlled to be increased to increase the compressed air flow. The opening degree of the combustible gas adjusting valve can also be controlled to be reduced while the opening degree of the compressed air adjusting valve is controlled to be increased, so as to reduce the combustible gas flow while increasing the compressed air flow, thereby reducing the combustible gas proportion provided by the heating device to achieve a smaller adjusted combustible gas proportion.

[0263] In the embodiments of the present application, the heating device includes a combustible gas regulating valve and a compressed air regulating valve. In the case that the adjusted combustible gas proportion is less than the current combustible gas proportion, the combustible gas proportion provided by the heating device can be reduced by controlling the opening degree of the combustible gas regulating valve to decrease and / or the opening degree of the compressed air regulating valve to increase, until the adjusted combustible gas proportion is reached, thereby improving the convenience and flexibility of the control process of reducing the combustible gas proportion.

[0264] Correspondingly, in one of the embodiments, the S730 of controlling the heating device to reach the adjusted combustible gas proportion further includes:

[0265] In the case that the adjusted combustible gas proportion is greater than the current combustible gas proportion, at least one of the opening degree of the combustible gas regulating valve is controlled to increase and the opening degree of the compressed air regulating valve is controlled to decrease, until the adjusted combustible gas proportion is reached.

[0266] The combustible gas regulating valve and the compressed air regulating valve are arranged in a gas transmission pipeline, and the gas transmission pipeline is used to provide mixed gas including compressed gas and combustible gas. Increasing the combustible gas flow in the gas transmission pipeline and / or decreasing the compressed air flow in the gas transmission pipeline can increase the combustible gas proportion.

[0267] Optionally, in the case that the adjusted combustible gas proportion is greater than the current combustible gas proportion, the host computer can control the opening degree of the combustible gas regulating valve to increase, so as to increase the combustible gas flow in the gas transmission pipeline, or control the opening degree of the compressed air regulating valve to decrease, so as to decrease the compressed air flow in the gas transmission pipeline. The opening degree of the combustible gas regulating valve can also be controlled to increase while the opening degree of the compressed air regulating valve is controlled to decrease, so as to increase the combustible gas flow while decreasing the compressed air flow, thereby increasing the combustible gas proportion provided by the heating device, so as to reach a larger adjusted combustible gas proportion.

[0268] In the embodiments of the present application, the heating device includes a combustible gas regulating valve and a compressed air regulating valve. In the case that the adjusted combustible gas proportion is greater than the current combustible gas proportion, the combustible gas proportion provided by the heating device can be increased by controlling the opening degree of the combustible gas regulating valve to increase and / or the opening degree of the compressed air regulating valve to decrease, until the adjusted combustible gas proportion is reached, thereby correspondingly improving the convenience and flexibility of the control process of increasing the combustible gas proportion.

[0269] The preset heating parameter includes a heating distance of the heating device to the battery pole piece. Based on this, in one of the embodiments, as shown in FIG. 9, the S330 of adjusting the preset heating parameter based on the thickness of the heated pole piece includes:

[0270] S910, obtaining a thickness difference between the heated electrode thickness and the unheated electrode thickness of the battery electrode.

[0271] Optionally, the host computer can read the heated electrode thickness of the battery electrode measured by the first thickness gauge and the unheated electrode thickness of the battery electrode measured by the second thickness gauge respectively, to obtain the thickness difference between the heated electrode thickness and the unheated electrode thickness. For example, in the case of determining the heated electrode thickness based on the above thickness difference, the host computer can directly read the thickness difference.

[0272] S920, determining an adjusted heating distance according to the thickness difference, the electrode transportation speed, the initial reference heating distance, and the current heating distance of the heating device.

[0273] In this embodiment, the electrode transportation speed and the initial reference heating distance can be pre-set according to actual needs.

[0274] Optionally, after the host computer obtains the thickness difference of the battery electrode before and after heating, the host computer can obtain the preset electrode transportation speed and initial reference heating distance, and read the current heating distance of the heating device, to determine the adjusted heating distance according to the thickness difference, the electrode transportation speed, the initial reference heating distance, and the current heating distance.

[0275] For example, the host computer can input the speed influence coefficient Vk determined based on the electrode transportation speed, the thickness difference Ek, the initial reference heating distance Lk, and the conversion coefficient Uk between the thickness difference and the heating distance into the heating distance PID control formula, to obtain the corresponding output parameter MV. In this embodiment, the heating distance PID control formula satisfies the following formula: MV=Vk*(KpEk*Lk*Uk+Kp(1 / Ti∫_0^t Ekdt)+Kp*Td*dEk / dt)

[0276] In this embodiment, the reference value of Lk is 100-200, and the reference value of Uk is 100-2000.

[0277] After obtaining the output parameter, the host computer can determine the adjusted heating distance based on the output parameter and the current heating distance of the heating device. For example, the host computer can directly obtain the sum of the output parameter MV and the current heating distance SV as the adjusted heating distance SV': SV'=MV+SV=Vk*(KpEk*Lk*Uk+Kp(1 / Ti∫_0^t Ekdt)+Kp*Td*dEk / dt)+SV

[0278] In the embodiments of the present application, the preset heating parameter includes a heating distance of the heating device to the battery pole piece. A thickness difference between the heated pole piece thickness and the pole piece thickness before heating is obtained, and an adjusted heating distance is determined according to the thickness difference, the pole piece conveying speed, the initial reference heating distance, and the current heating distance of the heating device. In the above method, the heated pole piece thickness after the heating treatment is accurately monitored, so as to adjust the heating distance subsequently, and the reliability and accuracy of the heating control are also improved.

[0279] The actual heated pole piece thickness after the heating treatment may be greater than or less than the expected thickness after the heating treatment. Based on this, in one of the embodiments:

[0280] In the case where the heated pole piece thickness is greater than the expected thickness, the adjusted heating distance is greater than the current heating distance.

[0281] The heating distance also affects the heating temperature of the heating device to the battery pole piece, and the heating temperature affects the heat rebound degree of the battery pole piece, which in turn affects the size of the heated pole piece thickness. In addition, the heating distance and the heating temperature are negatively correlated, the heating temperature and the heat rebound degree of the battery pole piece are positively correlated, and the heat rebound degree of the battery pole piece and the heated pole piece thickness are positively correlated. Therefore, the heating distance and the heated pole piece thickness are negatively correlated.

[0282] The heated pole piece thickness being greater than the expected thickness indicates that the heat rebound degree of the battery pole piece is too large, the heating temperature is too large, and the corresponding heating distance is too small. Therefore, the heating distance needs to be increased to reduce the heating temperature and the heat rebound degree of the battery pole piece, so as to reduce the heated pole piece thickness. Therefore, in the case where the heated pole piece thickness is greater than the expected thickness, the adjusted heating distance determined by the host computer based on the heated pole piece thickness is greater than the current heating distance.

[0283] In the case where the heated pole piece thickness is less than the expected thickness, the adjusted heating distance is less than the current heating distance.

[0284] The heated pole piece thickness being less than the expected thickness indicates that the heat rebound degree of the battery pole piece is too small, the heating temperature is too small, and the corresponding heating distance is too large. Therefore, the heating distance needs to be reduced to increase the heating temperature and the heat rebound degree of the battery pole piece, so as to increase the heated pole piece thickness.

[0285] Optionally, the host computer compares the post-heating thickness of the battery pole piece with the expected thickness, and in the case that the post-heating thickness of the battery pole piece is less than the expected thickness, determines that the heating distance needs to be reduced in the current situation, and controls the heating device to reduce the heating distance of the battery pole piece. Therefore, in the case that the post-heating thickness of the battery pole piece is less than the expected thickness, the adjusted heating distance determined by the host computer based on the post-heating thickness of the battery pole piece is less than the current heating distance.

[0286] In the embodiments of the present application, in the case that the post-heating thickness of the battery pole piece is greater than the expected thickness, the adjusted heating distance is greater than the current heating distance; in the case that the post-heating thickness of the battery pole piece is less than the expected thickness, the adjusted heating distance is less than the current heating distance. In the above method, the adjustment process of the heating distance is adapted to the influence of the heating process on the thickness of the pole piece, so that the accuracy of the adjustment of the heating distance is improved.

[0287] The heating device includes an ignition head and a servo motor, and the distance between the ignition head and the battery pole piece is the heating distance of the battery pole piece by the heating device. Based on this, the above-mentioned adjustment of the heating distance based on the post-heating thickness of the battery pole piece is used to achieve the following process:

[0288] In the case that the adjusted heating distance is greater than the current heating distance, the servo motor is controlled to drive the ignition head to move away from the battery pole piece until the adjusted heating distance is reached.

[0289] The ignition head corresponds to the position of the battery pole piece passing through the heating area, and is used to ignite the mixed gas to generate a flame to heat the battery pole piece by the flame. Controlling the ignition head to move away from the battery pole piece can increase the heating distance.

[0290] Optionally, in the case that the adjusted heating distance is greater than the current heating distance, the host computer can control the servo motor to drive the ignition head to move away from the battery pole piece to increase the distance between the ignition head and the battery pole piece, thereby increasing the heating distance of the battery pole piece by the heating device, until the larger adjusted heating distance is reached.

[0291] Correspondingly, in the case that the adjusted heating distance is less than the current heating distance, the servo motor is controlled to drive the ignition head to move towards the battery pole piece until the adjusted heating distance is reached.

[0292] The ignition head corresponds to the position of the battery pole piece passing through the heating area, and is used to ignite the mixed gas to generate a flame to heat the battery pole piece by the flame. Controlling the ignition head to move away from the battery pole piece can increase the heating distance.

[0293] Optionally, in the case that the adjusted heating distance is smaller than the current heating distance, the host computer can control the servo motor to drive the ignition head to move towards the battery pole piece to reduce the distance between the ignition head and the battery pole piece, so as to reduce the heating distance of the heating device to the battery pole piece until the smaller adjusted heating distance is reached.

[0294] To achieve the temperature reduction of the pole piece, in one of the embodiments, as shown in FIG. 10, the above method further includes:

[0295] S1010, obtaining the heated pole piece temperature of the battery pole piece.

[0296] The heated pole piece temperature of the battery pole piece is the temperature of the battery pole piece after the heating treatment.

[0297] Optionally, the temperature measuring instrument is arranged after the heating device, and the host computer can obtain the temperature of the battery pole piece after the heating treatment, i.e., the heated pole piece temperature, measured by the temperature measuring instrument.

[0298] S1020, in the case that the heated pole piece temperature meets the temperature reduction condition, performing the temperature reduction treatment on the subsequent battery pole piece.

[0299] Optionally, after obtaining the heated pole piece temperature of the battery pole piece, the host computer can determine whether the heated pole piece temperature meets the temperature reduction condition according to the preset temperature reduction condition, so as to perform the temperature reduction treatment on the subsequent battery pole piece in the case that the heated pole piece temperature meets the temperature reduction condition.

[0300] Optionally, in the case that the heated pole piece temperature does not meet the temperature reduction condition, the host computer does not need to perform the temperature reduction treatment on the subsequent battery pole piece.

[0301] In the embodiments of the present application, the above method further includes obtaining the heated pole piece temperature of the battery pole piece, so as to perform the temperature reduction treatment on the subsequent battery pole piece in the case that the heated pole piece temperature meets the temperature reduction condition. In the above method, the online monitoring of the temperature of the battery pole piece in the heating process is achieved, so as to timely perform the temperature reduction treatment in the case that the heated pole piece temperature of the battery pole piece meets the temperature reduction condition, thereby improving the monitoring comprehensiveness and the safety of the heating control.

[0302] The temperature reduction condition includes a preset temperature threshold, and in one of the embodiments, as shown in FIG. 11, the above method further includes:

[0303] S1110, in the case that the heated pole piece temperature is greater than or equal to the preset temperature threshold, determining that the heated pole piece temperature meets the temperature reduction condition.

[0304] The purpose of the temperature reduction treatment is to avoid the temperature of the battery pole piece being too high after the heating treatment. The preset temperature threshold is a preset upper limit of temperature. If the temperature of the pole piece after heating is greater than or equal to the preset temperature threshold, it indicates that the temperature of the battery pole piece after the heating treatment is too high, and there is a high safety risk, and the battery pole piece after the heating treatment needs to be subjected to the temperature reduction treatment.

[0305] Optionally, after the host computer obtains the temperature of the pole piece after heating, the temperature of the pole piece after heating can be compared with the preset temperature threshold, so that in the case that the temperature of the pole piece after heating is greater than or equal to the preset temperature threshold, it is determined that the temperature of the pole piece after heating meets the temperature reduction condition, and the battery pole piece after the heating treatment needs to be subjected to the temperature reduction treatment accordingly.

[0306] S1120, in the case that the temperature of the pole piece after heating is less than the preset temperature threshold, it is determined that the temperature of the pole piece after heating does not meet the temperature reduction condition.

[0307] In the case that the temperature of the pole piece after heating is less than the preset temperature threshold, it indicates that the temperature of the battery pole piece after the heating treatment is not very high, and there is no high safety risk, and the battery pole piece after the heating treatment does not need to be subjected to the temperature reduction treatment.

[0308] Optionally, after the host computer obtains the temperature of the pole piece after heating, the temperature of the pole piece after heating can be compared with the preset temperature threshold, so that in the case that the temperature of the pole piece after heating is less than the preset temperature threshold, it is determined that the temperature of the pole piece after heating does not meet the temperature reduction condition, and the battery pole piece after the heating treatment does not need to be subjected to the temperature reduction treatment accordingly.

[0309] In the embodiments of the present application, the temperature reduction condition includes the preset temperature threshold, and the above method further includes determining that the temperature of the pole piece after heating meets the temperature reduction condition in the case that the temperature of the pole piece after heating is greater than or equal to the preset temperature threshold, and determining that the temperature of the pole piece after heating does not meet the temperature reduction condition in the case that the temperature of the pole piece after heating is less than the preset temperature threshold. In the above method, whether the temperature of the pole piece after heating meets the temperature reduction condition is determined based on a simple threshold value, the judgment process is simple and easy to program, and the judgment efficiency and the timeliness of the temperature reduction treatment are simultaneously improved.

[0310] The host computer can implement the temperature reduction treatment through a temperature reduction device. Based on this, in one of the embodiments, the temperature reduction treatment on the subsequent battery pole piece in S1020 includes:

[0311] The temperature reduction device is controlled to perform the temperature reduction treatment on the battery pole piece after the heating treatment.

[0312] Exemplarily, the temperature reduction device can include a fan, and can also include a cooling roller in contact with the surface of the battery pole piece.

[0313] Optionally, the temperature reducing device is arranged behind the heating device and behind the temperature measuring instrument, and the host computer starts the temperature reducing device to control the temperature reducing device to reduce the temperature of the battery pole piece after the heating treatment under the condition that the temperature of the battery pole piece after the heating treatment meets the temperature reducing condition.

[0314] For example, when the temperature reducing device includes a fan, the host computer can control the fan to blow air on the battery pole piece after the heating treatment to accelerate heat dissipation and thus reduce the temperature of the pole piece; when the temperature reducing device includes a cooling roller, the host computer can control the cooling water to be introduced into the cooling roller in circulation, so that the cooling water flows in circulation to take away the heat on the battery pole piece and thus reduce the temperature of the pole piece.

[0315] In the embodiments of the present application, the temperature reducing device is controlled to reduce the temperature of the battery pole piece after the heating treatment, so that the temperature reduction of the battery pole piece is realized and the safety of the heating control is improved.

[0316] The temperature reducing device includes a cooling roller and a cooling water regulating valve, and the surface of the cooling roller is in contact with the surface of the battery pole piece. Based on this, in one of the embodiments, as shown in FIG. 12, the above-mentioned control of the temperature reducing device to reduce the temperature of the battery pole piece after the heating treatment includes:

[0317] S1210, obtaining a temperature difference between the temperature of the battery pole piece after the heating treatment and the preset temperature threshold.

[0318] Optionally, under the condition that the temperature of the battery pole piece after the heating treatment meets the temperature reducing condition, the host computer can further obtain a temperature difference between the temperature of the battery pole piece after the heating treatment and the preset temperature threshold.

[0319] S1220, determining an adjusted valve opening degree according to the temperature difference and the current valve opening degree of the cooling water regulating valve.

[0320] Optionally, after the temperature difference is obtained, the host computer can read the current valve opening degree of the cooling water regulating valve in the temperature reducing device, and determine an adjusted valve opening degree according to the temperature difference and the current valve opening degree. For example, the host computer can input the temperature difference Ek into a temperature difference PID control formula to obtain a corresponding output parameter MV. The temperature difference PID control formula satisfies the following formula: MV=(Kp*Ek+Kp(1 / Ti∫_0^t Ekdt)+Kp*Td*dEk / dt)

[0321] In the formula, MV is provided with an upper limit and a lower limit of -30 to +30.

[0322] After obtaining the output parameter, the host computer can determine an adjusted valve opening degree of the cooling water regulating valve based on the output parameter and a current valve opening degree of the cooling water regulating valve. For example, the adjusted valve opening degree S' is determined based on the output parameter MV and the current valve opening degree S, and satisfies the following formula: S' = (MV / 100 + 1) + S

[0323] The valve opening degree of the cooling water regulating valve in the initial state is 30%-70%.

[0324] S1230, the cooling water regulating valve is controlled to open according to the adjusted valve opening degree, so as to change the cooling water flow entering the cooling roller, and to cool the subsequent battery pole piece after the heating treatment.

[0325] The cooling roller is connected with the cooling water regulating valve through a cooling pipeline, and the cooling roller is arranged in close contact with the battery pole piece, so that the surface of the cooling roller is in contact with the surface of the battery pole piece. The cooling water regulating valve is used to open the cooling water regulating valve under the control of the host computer, so as to adjust the cooling water flow entering the cooling roller from the water supply device through the cooling pipeline.

[0326] Optionally, after obtaining the adjusted valve opening degree, the host computer can control the cooling water regulating valve to open according to the adjusted valve opening degree, so as to change the cooling water flow entering the cooling roller, and to cool the subsequent battery pole piece after the heating treatment.

[0327] In an optional embodiment, the above-mentioned process of controlling the cooling device to cool the battery pole piece is used to implement the following process:

[0328] The host computer can control the cooling water regulating valve to open when the temperature of the heated pole piece is greater than the preset temperature threshold, so as to increase the cooling water flow entering the cooling roller from the water supply device through the cooling pipeline. The host computer can also control the cooling water regulating valve to close or reduce the opening degree when the temperature of the heated pole piece is less than the preset temperature threshold and lasts for a preset time length, so as to control the cooling water to no longer enter the cooling roller, or to reduce the cooling water flow entering the cooling roller.

[0329] Optionally, the host computer can also adjust the opening degree of the cooling water regulating valve according to the temperature of the heated pole piece, so as to adjust the cooling water flow entering the cooling roller from the water supply device through the cooling pipeline. The cooling water flow entering the cooling roller corresponds to the cooling degree of the battery pole piece. For example, increasing the cooling water flow increases the cooling degree of the battery pole piece accordingly, and reducing the cooling water flow reduces the cooling degree of the battery pole piece accordingly.

[0330] Optionally, the preset temperature threshold includes a plurality of different temperature thresholds, and the host computer can adjust the cooling water flow according to the size relationship between the temperature of the heated pole piece and the different temperature thresholds in the preset temperature threshold, so as to realize different cooling degrees.

[0331] Exemplarily, the preset temperature threshold includes a first temperature threshold T1 and a second temperature threshold T2, T1>T2, the opening degree of the cooling water regulating valve is sequentially reduced to a first opening degree K1, a second opening degree K2 and a third opening degree K3, and the temperature of the heated pole piece is T. When T>T1, the host computer can control the opening degree of the cooling water regulating valve to reach the maximum K1 to control the maximum cooling water flow into the cooling roller to achieve the maximum cooling degree; when T2<T≤T1, the opening degree of the cooling water regulating valve is controlled to reach K2 to control the cooling water flow into the cooling roller to be in the middle to achieve the middle cooling degree; and when T≤T2, the opening degree of the cooling water regulating valve is controlled to reach the minimum K1 to control the minimum cooling water flow into the cooling roller to achieve the minimum cooling degree.

[0332] In the embodiment of the present application, the cooling device includes a cooling roller and a cooling water regulating valve. The surface of the cooling roller is in contact with the surface of the battery pole piece. By controlling the opening of the cooling water regulating valve, the cooling water flow into the cooling roller is increased to cool the battery pole piece after the heating treatment. In the above method, the cooling treatment of the battery pole piece is realized based on the cooling roller and the cooling water regulating valve, which is safe, reliable and efficient.

[0333] In order to facilitate the understanding of those skilled in the art, the pole piece heating control method provided by the present application is described in detail below. As shown in FIG. 13, the method can include:

[0334] S1301, controlling the heating device to heat the battery pole piece in the heating area according to the preset heating parameters;

[0335] S1302, obtaining the heated pole piece thickness and the reference thickness of the battery pole piece; the reference thickness includes the pre-heating pole piece thickness of the battery pole piece and / or the expected thickness after the heating treatment;

[0336] S1303, determining whether the heated pole piece thickness meets the thickness requirement according to the heated pole piece thickness and the reference thickness;

[0337] S1304, in the case that the heated pole piece thickness does not meet the thickness requirement, obtaining the thickness difference between the heated pole piece thickness and the pre-heating pole piece thickness of the battery pole piece;

[0338] S1305, in the case that the thickness difference is greater than the preset upper limit of the difference, controlling the opening degree of the combustible gas regulating valve in the heating device to decrease, and / or, controlling the opening degree of the compressed air regulating valve in the heating device to increase;

[0339] S1306, in the case that the thickness difference is less than the preset lower limit of the difference, controlling the opening degree of the combustible gas regulating valve in the heating device to increase, and / or, controlling the opening degree of the compressed air regulating valve in the heating device to decrease;

[0340] S1307、in the case that the thickness of the pole piece after heating is greater than the expected thickness, controlling the servo motor in the heating device to drive the ignition head in the heating device to move away from the battery pole piece;

[0341] S1308、in the case that the thickness of the pole piece after heating is less than the expected thickness, controlling the servo motor in the heating device to drive the ignition head in the heating device to move close to the battery pole piece;

[0342] S1309、obtaining the temperature of the pole piece after heating;

[0343] S1310、in the case that the temperature of the pole piece after heating is greater than or equal to the preset temperature threshold, determining that the temperature of the pole piece after heating meets the cooling condition; in the case that the temperature of the pole piece after heating is less than the preset temperature threshold, determining that the temperature of the pole piece after heating does not meet the cooling condition;

[0344] S1311、in the case that the temperature of the pole piece after heating meets the cooling condition, controlling the cooling water regulating valve in the cooling device to open, and increasing the flow of cooling water into the cooling roller in the cooling device, so as to perform cooling treatment on the subsequent battery pole piece after heating.

[0345] It should be noted that the above S1301-S1311 can refer to the description of the related description in the above embodiments, and the effects are similar, and the present embodiment will not be repeated here.

[0346] It should be understood that although each step in the flowchart involved in each of the above embodiments is displayed in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise stated herein, the execution of these steps has no strict order limitation, and these steps can be executed in other order. Moreover, as described above, at least part of the steps in the flowchart involved in each of the above embodiments can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but can be alternately executed with other steps or steps or stages in other steps.

[0347] In one embodiment, as shown in FIG. 14, a pole piece heating control device is provided, comprising: a heating response module 1401, a thickness determination module 1402, and a parameter adjustment module 1403; wherein,

[0348] The heating response module 1401 is configured to control the heating device to perform heating treatment on the battery pole piece in the heating area according to the preset heating parameter;

[0349] The thickness determination module 1402 is configured to obtain the thickness of the pole piece after heating;

[0350] The parameter adjustment module 1403 is configured to adjust the preset heating parameter according to the thickness of the heated pole piece, so as to control the heating device to heat the subsequent battery pole piece by using the adjusted preset heating parameter, in the case that the thickness of the heated pole piece does not meet the thickness requirement.

[0351] In one of the embodiments, the device further includes:

[0352] The reference thickness module is configured to obtain a reference thickness of the battery pole piece.

[0353] The state determination module is configured to determine whether the thickness of the heated pole piece meets the thickness requirement according to the thickness of the heated pole piece and the reference thickness.

[0354] In one of the embodiments, the reference thickness includes a pre-heating pole piece thickness of the battery pole piece; and the state determination module includes:

[0355] The difference sub-module is configured to obtain a thickness difference between the thickness of the heated pole piece and the pre-heating pole piece thickness.

[0356] The first normal sub-module is configured to determine that the thickness of the heated pole piece meets the thickness requirement, in the case that the thickness difference is within a preset difference range.

[0357] The first abnormal sub-module is configured to determine that the thickness of the heated pole piece does not meet the thickness requirement, in the case that the thickness difference is not within the preset difference range.

[0358] In one of the embodiments, the reference thickness includes an expected thickness of the battery pole piece after the heating treatment; and the state determination module includes:

[0359] The comparison sub-module is configured to compare the thickness of the heated pole piece with the expected thickness.

[0360] The second normal sub-module is configured to determine that the thickness of the heated pole piece meets the thickness requirement, in the case that the thickness of the heated pole piece matches the expected thickness.

[0361] The second abnormal sub-module is configured to determine that the thickness of the heated pole piece does not meet the thickness requirement, in the case that the thickness of the heated pole piece does not match the expected thickness.

[0362] In one of the embodiments, the preset heating parameter includes a combustible gas proportion in a mixed gas, the mixed gas including a combustible gas provided by the heating device and compressed air; and the parameter adjustment module 1403 includes:

[0363] The difference obtaining sub-module is configured to obtain a thickness difference between the thickness of the heated pole piece at different position points and the pre-heating pole piece thickness of the battery pole piece.

[0364] The proportion determining sub-module is configured to determine an adjusted combustible gas proportion according to the output value influence coefficient of each position point, the thickness difference of each position point, and the current combustible gas proportion of the heating device.

[0365] The adjustment control sub-module is configured to control the heating device to reach the adjusted combustible gas proportion.

[0366] In one of the embodiments, the adjustment control sub-module comprises:

[0367] The proportion parameter unit is configured to determine a proportion parameter according to the thickness difference of each position point.

[0368] The sum of products unit is configured to obtain a sum of products of the proportion parameter and the output value influence coefficient of each position point.

[0369] The proportion determining unit is configured to determine the adjusted combustible gas proportion according to the sum of products and the current combustible gas proportion.

[0370] In one of the embodiments, the heating device comprises a combustible gas regulating valve and a compressed air regulating valve; and the adjustment control sub-module is further configured to:

[0371] In the case where the adjusted combustible gas proportion is less than the current combustible gas proportion, at least one of the opening degree of the combustible gas regulating valve is reduced and the opening degree of the compressed air regulating valve is increased until the adjusted combustible gas proportion is reached.

[0372] In one of the embodiments, the heating device comprises a combustible gas regulating valve and a compressed air regulating valve; and the adjustment control sub-module is further configured to:

[0373] In the case where the adjusted combustible gas proportion is greater than the current combustible gas proportion, at least one of the opening degree of the combustible gas regulating valve is increased and the opening degree of the compressed air regulating valve is reduced until the adjusted combustible gas proportion is reached.

[0374] In one of the embodiments, the preset heating parameter comprises a heating distance of the heating device to the battery sheet; and the parameter adjustment module comprises:

[0375] The difference obtaining module is configured to obtain a thickness difference between the sheet thickness after heating and the sheet thickness before heating of the battery sheet.

[0376] The adjustment determining module is configured to determine an adjusted heating distance according to the thickness difference, the sheet transportation speed, the initial reference heating distance, and the current heating distance of the heating device.

[0377] In one of the embodiments, the adjusted heating distance is greater than the current heating distance when the thickness of the heated electrode sheet is greater than the expected thickness; and the adjusted heating distance is less than the current heating distance when the thickness of the heated electrode sheet is less than the expected thickness.

[0378] In one of the embodiments, the device further comprises:

[0379] The temperature acquisition module is configured to acquire a heated electrode sheet temperature of the battery electrode sheet.

[0380] The cooling processing module is configured to perform cooling processing on the subsequent battery electrode sheet when the heated electrode sheet temperature meets a cooling condition.

[0381] In one of the embodiments, the cooling condition comprises a preset temperature threshold, and the device further comprises:

[0382] The first condition module is configured to determine that the heated electrode sheet temperature meets the cooling condition when the heated electrode sheet temperature is greater than or equal to the preset temperature threshold.

[0383] The second condition module is configured to determine that the heated electrode sheet temperature does not meet the cooling condition when the heated electrode sheet temperature is less than the preset temperature threshold.

[0384] In one of the embodiments, the cooling device comprises a cooling roller and a cooling water regulating valve, and a surface of the cooling roller is in contact with a surface of the battery electrode sheet; and the cooling processing module comprises:

[0385] The temperature difference acquisition submodule is configured to acquire a temperature difference between the heated electrode sheet temperature and the preset temperature threshold.

[0386] The opening degree determination submodule is configured to determine an adjusted valve opening degree according to the temperature difference and a current valve opening degree of the cooling water regulating valve.

[0387] The opening degree control submodule is configured to control the cooling water regulating valve to open according to the adjusted valve opening degree, change a cooling water flow entering the cooling roller, and perform cooling processing on the subsequent battery electrode sheet after the heating processing.

[0388] The above modules in the electrode heating control device can be realized by software, hardware, and combinations thereof, in whole or in part. The above modules can be embedded in or independent of a processor in a computer device in hardware form, or stored in a memory in a computer device in software form, so as to be called and executed by a processor to perform operations corresponding to the above modules.

[0389] In an exemplary embodiment, a computer device, which can be a terminal, is provided, and an internal structure diagram of the computer device can be as shown in FIG. 15. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface, the display unit, and the input device are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals in a wired or wireless manner, and the wireless manner can be achieved through WIFI, mobile cellular network, near field communication (Near Field Communication, NFC), or other technologies. The computer program is executed by the processor to implement an electrode piece heating control method. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer overlaid on the display screen, or a key, trackball, or touchpad arranged on the shell of the computer device, or an external keyboard, touchpad, or mouse, etc.

[0390] Those skilled in the art can understand that the structure shown in FIG. 15 is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. A specific computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0391] In an embodiment, a computer device is provided, including a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the following steps:

[0392] controlling the heating device to perform heating processing on the battery electrode piece in the heating area according to the preset heating parameter; obtaining a post-heating electrode piece thickness of the battery electrode piece; and in a case where the post-heating electrode piece thickness does not meet the thickness requirement, adjusting the preset heating parameter based on the post-heating electrode piece thickness, so as to control the heating device to perform heating processing on subsequent battery electrode pieces by using the adjusted preset heating parameter.

[0393] In one of the embodiments, the processor executing the computer program further implements the following steps:

[0394] obtaining a reference thickness of the battery pole piece; determining whether the thickness of the heated pole piece meets the thickness requirement according to the thickness of the heated pole piece and the reference thickness.

[0395] In one of the embodiments, the reference thickness comprises a thickness of the battery pole piece before heating; and the processor, when executing the computer program, further implements the following steps:

[0396] obtaining a thickness difference between the thickness of the heated pole piece and the thickness of the pole piece before heating; determining that the thickness of the heated pole piece meets the thickness requirement in a case where the thickness difference is within a preset difference range; and determining that the thickness of the heated pole piece does not meet the thickness requirement in a case where the thickness difference is not within the preset difference range.

[0397] In one of the embodiments, the reference thickness comprises an expected thickness of the battery pole piece after the heating treatment; and the processor, when executing the computer program, further implements the following steps:

[0398] comparing the thickness of the heated pole piece with the expected thickness; determining that the thickness of the heated pole piece meets the thickness requirement in a case where the thickness of the heated pole piece matches the expected thickness; and determining that the thickness of the heated pole piece does not meet the thickness requirement in a case where the thickness of the heated pole piece does not match the expected thickness.

[0399] In one of the embodiments, the preset heating parameter comprises a combustible gas proportion in a mixed gas, and the mixed gas comprises a combustible gas provided by the heating device and compressed air; and the processor, when executing the computer program, further implements the following steps:

[0400] obtaining thickness differences between the thickness of the heated pole piece at different position points and the thickness of the pole piece before heating; determining an adjusted combustible gas proportion according to the output value influence coefficient of each position point, the thickness difference of each position point, and the current combustible gas proportion of the heating device; and controlling the heating device to reach the adjusted combustible gas proportion.

[0401] In one of the embodiments, the processor, when executing the computer program, further implements the following steps:

[0402] determining a proportion parameter according to the thickness difference of each position point; obtaining a sum of products of the proportion parameter and the output value influence coefficient of each position point; and determining an adjusted combustible gas proportion according to the sum and the current combustible gas proportion.

[0403] In one of the embodiments, the heating device comprises a combustible gas adjusting valve and a compressed air adjusting valve; and the processor, when executing the computer program, further implements the following steps:

[0404] in a case where the adjusted combustible gas proportion is less than the current combustible gas proportion, at least one of decreasing an opening degree of the combustible gas adjusting valve and increasing an opening degree of the compressed air adjusting valve is controlled until the adjusted combustible gas proportion is reached.

[0405] In one of the embodiments, the heating device comprises a combustible gas regulating valve and a compressed air regulating valve; when the processor executes the computer program, the following steps are further implemented:

[0406] In the case that the adjusted combustible gas proportion is greater than the current combustible gas proportion, at least one of the opening degree of the combustible gas regulating valve is increased and the opening degree of the compressed air regulating valve is decreased until the adjusted combustible gas proportion is reached.

[0407] In one of the embodiments, the preset heating parameter comprises a heating distance of the heating device to the battery sheet; when the processor executes the computer program, the following steps are further implemented:

[0408] A thickness difference between the heated sheet thickness and the pre-heating sheet thickness of the battery sheet is obtained; and the adjusted heating distance is determined according to the thickness difference, the sheet transportation speed, the initial reference heating distance and the current heating distance of the heating device.

[0409] In one of the embodiments, in the case that the heated sheet thickness is greater than the expected thickness, the adjusted heating distance is greater than the current heating distance; and in the case that the heated sheet thickness is less than the expected thickness, the adjusted heating distance is less than the current heating distance.

[0410] In one of the embodiments, when the processor executes the computer program, the following steps are further implemented:

[0411] A heated sheet temperature of the battery sheet is obtained; and in the case that the heated sheet temperature meets a cooling condition, a subsequent battery sheet is subjected to a cooling process.

[0412] In one of the embodiments, the cooling condition comprises a preset temperature threshold; when the processor executes the computer program, the following steps are further implemented:

[0413] In the case that the heated sheet temperature is greater than or equal to the preset temperature threshold, it is determined that the heated sheet temperature meets the cooling condition; and in the case that the heated sheet temperature is less than the preset temperature threshold, it is determined that the heated sheet temperature does not meet the cooling condition.

[0414] In one of the embodiments, the cooling device comprises a cooling roller and a cooling water regulating valve, and a surface of the cooling roller is in contact with a surface of the battery sheet; when the processor executes the computer program, the following steps are further implemented:

[0415] A temperature difference between the heated sheet temperature and the preset temperature threshold is obtained; an adjusted valve opening degree is determined according to the temperature difference and a current valve opening degree of the cooling water regulating valve; and the cooling water regulating valve is controlled to be opened at the adjusted valve opening degree to change a cooling water flow rate entering the cooling roller, so as to cool the subsequent battery sheet subjected to the heating process.

[0416] In one embodiment, a computer readable storage medium is provided, and the computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the following steps:

[0417] The heating device is controlled to perform heating treatment on the battery pole piece in the heating area according to the preset heating parameter; the thickness of the battery pole piece after heating is obtained; and in a case where the thickness of the battery pole piece after heating does not meet the thickness requirement, the preset heating parameter is adjusted based on the thickness of the battery pole piece after heating, so that the heating device performs heating treatment on the subsequent battery pole piece by using the adjusted preset heating parameter.

[0418] In one embodiment, the computer program is executed by the processor to further implement the following steps:

[0419] The reference thickness of the battery pole piece is obtained; and whether the thickness of the battery pole piece after heating meets the thickness requirement is determined according to the thickness of the battery pole piece after heating and the reference thickness.

[0420] In one embodiment, the reference thickness includes the thickness of the battery pole piece before heating; and the computer program is executed by the processor to further implement the following steps:

[0421] The thickness difference between the thickness of the battery pole piece after heating and the thickness of the battery pole piece before heating is obtained; in a case where the thickness difference is within a preset difference range, it is determined that the thickness of the battery pole piece after heating meets the thickness requirement; and in a case where the thickness difference is not within the preset difference range, it is determined that the thickness of the battery pole piece after heating does not meet the thickness requirement.

[0422] In one embodiment, the reference thickness includes the expected thickness of the battery pole piece after heating treatment; and the computer program is executed by the processor to further implement the following steps:

[0423] The thickness of the battery pole piece after heating is compared with the expected thickness; in a case where the thickness of the battery pole piece after heating matches the expected thickness, it is determined that the thickness of the battery pole piece after heating meets the thickness requirement; and in a case where the thickness of the battery pole piece after heating does not match the expected thickness, it is determined that the thickness of the battery pole piece after heating does not meet the thickness requirement.

[0424] In one embodiment, the preset heating parameter includes a combustible gas proportion in a mixed gas, and the mixed gas includes a combustible gas provided by the heating device and compressed air; and the computer program is executed by the processor to further implement the following steps:

[0425] The thickness difference between the thickness of the battery pole piece after heating at different position points and the thickness of the battery pole piece before heating is obtained; the adjusted combustible gas proportion is determined according to the output value influence coefficient of each position point, the thickness difference of each position point, and the current combustible gas proportion of the heating device; and the heating device is controlled to reach the adjusted combustible gas proportion.

[0426] In one of the embodiments, the computer program, when executed by the processor, further implements the following steps:

[0427] The proportion parameter is determined according to the thickness difference of each position point; a sum of products of the proportion parameter and the output value influence coefficient of each position point is obtained; and the adjusted combustible gas proportion is determined according to the current combustible gas proportion.

[0428] In one of the embodiments, the heating device includes a combustible gas regulating valve and a compressed air regulating valve; and the computer program, when executed by the processor, further implements the following steps:

[0429] In the case where the adjusted combustible gas proportion is less than the current combustible gas proportion, at least one of the opening degree of the combustible gas regulating valve is reduced and the opening degree of the compressed air regulating valve is increased is controlled until the adjusted combustible gas proportion is reached.

[0430] In one of the embodiments, the heating device includes a combustible gas regulating valve and a compressed air regulating valve; and the computer program, when executed by the processor, further implements the following steps:

[0431] In the case where the adjusted combustible gas proportion is greater than the current combustible gas proportion, at least one of the opening degree of the combustible gas regulating valve is increased and the opening degree of the compressed air regulating valve is reduced is controlled until the adjusted combustible gas proportion is reached.

[0432] In one of the embodiments, the preset heating parameter includes a heating distance of the heating device to the battery pole piece; and the computer program, when executed by the processor, further implements the following steps:

[0433] A thickness difference between the heated pole piece thickness and the pole piece thickness before heating of the battery pole piece is obtained; and the adjusted heating distance is determined according to the thickness difference, the pole piece transportation speed, the initial reference heating distance, and the current heating distance of the heating device.

[0434] In one of the embodiments, in the case where the heated pole piece thickness is greater than the expected thickness, the adjusted heating distance is greater than the current heating distance; and in the case where the heated pole piece thickness is less than the expected thickness, the adjusted heating distance is less than the current heating distance.

[0435] In one of the embodiments, the computer program, when executed by the processor, further implements the following steps:

[0436] A heated pole piece temperature of the battery pole piece is obtained; and in the case where the heated pole piece temperature meets a cooling condition, a subsequent battery pole piece is subjected to a cooling process.

[0437] In one of the embodiments, the cooling condition includes a preset temperature threshold; and the computer program, when executed by the processor, further implements the following steps:

[0438] In a case where the temperature of the heated pole piece is greater than or equal to a preset temperature threshold, it is determined that the temperature of the heated pole piece satisfies the cooling condition; in a case where the temperature of the heated pole piece is less than the preset temperature threshold, it is determined that the temperature of the heated pole piece does not satisfy the cooling condition.

[0439] In one of the embodiments, the cooling device includes a cooling roller and a cooling water regulating valve, a surface of the cooling roller is in contact with a surface of the battery pole piece; the computer program, when executed by the processor, further implements the following steps:

[0440] A temperature difference between the temperature of the heated pole piece and the preset temperature threshold is obtained; an adjusted valve opening degree is determined according to the temperature difference and a current valve opening degree of the cooling water regulating valve; the cooling water regulating valve is controlled to be opened according to the adjusted valve opening degree, so as to change the cooling water flow entering the cooling roller, thereby cooling the subsequent battery pole piece after the heating treatment.

[0441] In one of the embodiments, a computer program product is provided, including a computer program, which, when executed by the processor, implements the following steps:

[0442] The heating device is controlled to heat the battery pole piece in the heating area according to a preset heating parameter; a heated pole piece thickness of the battery pole piece is obtained; in a case where the heated pole piece thickness does not satisfy a thickness requirement, the preset heating parameter is adjusted based on the heated pole piece thickness, so as to control the heating device to heat the subsequent battery pole piece by using the adjusted preset heating parameter.

[0443] In one of the embodiments, the computer program, when executed by the processor, further implements the following steps:

[0444] A reference thickness of the battery pole piece is obtained; whether the heated pole piece thickness satisfies the thickness requirement is determined according to the heated pole piece thickness and the reference thickness.

[0445] In one of the embodiments, the reference thickness includes a pre-heating pole piece thickness of the battery pole piece; the computer program, when executed by the processor, further implements the following steps:

[0446] A thickness difference between the heated pole piece thickness and the pre-heating pole piece thickness is obtained; in a case where the thickness difference is in a preset difference range, it is determined that the heated pole piece thickness satisfies the thickness requirement; in a case where the thickness difference is not in the preset difference range, it is determined that the heated pole piece thickness does not satisfy the thickness requirement.

[0447] In one of the embodiments, the reference thickness includes an expected thickness of the battery pole piece after the heating treatment; the computer program, when executed by the processor, further implements the following steps:

[0448] The thickness of the heated pole piece is compared with the expected thickness; in the case that the thickness of the heated pole piece matches the expected thickness, it is determined that the thickness of the heated pole piece meets the thickness requirement; in the case that the thickness of the heated pole piece does not match the expected thickness, it is determined that the thickness of the heated pole piece does not meet the thickness requirement.

[0449] In one of the embodiments, the preset heating parameter includes a combustible gas proportion in a mixed gas, the mixed gas including a combustible gas provided by the heating device and compressed air; the computer program, when executed by the processor, further implements the following steps:

[0450] The thickness difference between the thickness of the heated pole piece at different position points and the thickness of the battery pole piece before heating is obtained; the adjusted combustible gas proportion is determined according to the output value influence coefficient of each position point, the thickness difference of each position point, and the current combustible gas proportion of the heating device; and the heating device is controlled to reach the adjusted combustible gas proportion.

[0451] In one of the embodiments, the computer program, when executed by the processor, further implements the following steps:

[0452] The proportion parameter is determined according to the thickness difference of each position point; the sum of the products of the proportion parameter and the output value influence coefficient of each position point is obtained; and the adjusted combustible gas proportion is determined according to the sum and the current combustible gas proportion.

[0453] In one of the embodiments, the heating device includes a combustible gas adjusting valve and a compressed air adjusting valve; the computer program, when executed by the processor, further implements the following steps:

[0454] In the case that the adjusted combustible gas proportion is less than the current combustible gas proportion, at least one of the opening degree of the combustible gas adjusting valve is controlled to decrease and the opening degree of the compressed air adjusting valve is controlled to increase until the adjusted combustible gas proportion is reached.

[0455] In one of the embodiments, the heating device includes a combustible gas adjusting valve and a compressed air adjusting valve; the computer program, when executed by the processor, further implements the following steps:

[0456] In the case that the adjusted combustible gas proportion is greater than the current combustible gas proportion, at least one of the opening degree of the combustible gas adjusting valve is controlled to increase and the opening degree of the compressed air adjusting valve is controlled to decrease until the adjusted combustible gas proportion is reached.

[0457] In one of the embodiments, the preset heating parameter includes a heating distance of the heating device to the battery pole piece; the computer program, when executed by the processor, further implements the following steps:

[0458] The thickness difference between the thickness of the heated pole piece and the thickness of the battery pole piece before heating is obtained;

[0459] The adjusted heating distance is determined according to the thickness difference, the transport speed of the pole piece, the initial reference heating distance, and the current heating distance of the heating device.

[0460] In one of the embodiments, when the thickness of the pole piece after heating is greater than the expected thickness, the adjusted heating distance is greater than the current heating distance; and when the thickness of the pole piece after heating is less than the expected thickness, the adjusted heating distance is less than the current heating distance.

[0461] In one of the embodiments, the computer program, when executed by the processor, further implements the following steps:

[0462] The temperature of the pole piece after heating is obtained; and when the temperature of the pole piece after heating meets the cooling condition, the subsequent battery pole piece is subjected to cooling treatment.

[0463] In one of the embodiments, the cooling condition comprises a preset temperature threshold; and the computer program, when executed by the processor, further implements the following steps:

[0464] When the temperature of the pole piece after heating is greater than or equal to the preset temperature threshold, it is determined that the temperature of the pole piece after heating meets the cooling condition; and when the temperature of the pole piece after heating is less than the preset temperature threshold, it is determined that the temperature of the pole piece after heating does not meet the cooling condition.

[0465] In one of the embodiments, the cooling device comprises a cooling roller and a cooling water regulating valve, and the surface of the cooling roller is in contact with the surface of the battery pole piece; and the computer program, when executed by the processor, further implements the following steps:

[0466] The temperature difference between the temperature of the pole piece after heating and the preset temperature threshold is obtained; the adjusted valve opening degree is determined according to the temperature difference and the current valve opening degree of the cooling water regulating valve; and the cooling water regulating valve is controlled to be opened at the adjusted valve opening degree to change the cooling water flow entering the cooling roller, so as to cool the subsequent battery pole piece after heating treatment.

[0467] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of the methods can be included. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (Read-Only Memory, ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric memory (Ferroelectric Random Access Memory, FRAM), phase change memory (Phase Change Memory, PCM), graphene memory, etc. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, etc. As an illustration but not limitation, the RAM can be in various forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0468] Any combination of the technical features of the above embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0469] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A pole piece heating control method, wherein, The method comprises: controlling a heating device to perform heating treatment on a battery pole piece in a heating area according to preset heating parameters; obtaining a heated pole piece thickness of the battery pole piece; in a case where the heated pole piece thickness does not meet a thickness requirement, adjusting the preset heating parameters based on the heated pole piece thickness, so as to control the heating device to perform heating treatment on a subsequent battery pole piece by using the adjusted preset heating parameters.

2. The method of claim 1, wherein, The method further comprises: obtaining a reference thickness of the battery pole piece; the reference thickness is used to verify the heated pole piece thickness; determining whether the heated pole piece thickness meets the thickness requirement according to the heated pole piece thickness and the reference thickness.

3. The method of claim 2, wherein, The reference thickness comprises a pre-heating pole piece thickness of the battery pole piece; The determination of whether the heated pole piece thickness meets the thickness requirement according to the heated pole piece thickness and the reference thickness comprises: obtaining a thickness difference between the heated pole piece thickness and the pre-heating pole piece thickness; in a case where the thickness difference is within a preset difference range, determining that the heated pole piece thickness meets the thickness requirement; in a case where the thickness difference is not within the preset difference range, determining that the heated pole piece thickness does not meet the thickness requirement.

4. The method of claim 2, wherein, The reference thickness comprises an expected thickness of the battery pole piece after the heating treatment; The determination of whether the heated pole piece thickness meets the thickness requirement according to the heated pole piece thickness and the reference thickness comprises: comparing the heated pole piece thickness with the expected thickness; in a case where the heated pole piece thickness is the same as the expected thickness, determining that the heated pole piece thickness meets the thickness requirement; in a case where the heated pole piece thickness is not the same as the expected thickness, determining that the heated pole piece thickness does not meet the thickness requirement.

5. The method of any one of claims 1-4, wherein, The preset heating parameters comprise a combustible gas proportion in a mixed gas; the mixed gas comprises the combustible gas provided by the heating device and compressed air; The adjustment of the preset heating parameters based on the heated pole piece thickness comprises: obtaining thickness differences between the heated pole piece thicknesses of different position points and pre-heating pole piece thicknesses of the battery pole piece respectively; determining an adjusted combustible gas proportion according to output value influence coefficients of the position points, the thickness differences of the position points, and a current combustible gas proportion of the heating device; controlling the heating device to reach the adjusted combustible gas proportion.

6. The method of claim 5, wherein, The determination of the adjusted combustible gas proportion according to the output value influence coefficients of the position points, the thickness differences of the position points, and the current combustible gas proportion of the heating device comprises: determining proportion parameters according to the thickness differences of the position points; obtaining a sum of products of the proportion parameters of the position points and the output value influence coefficients; determining the adjusted combustible gas proportion according to the sum of products and the current combustible gas proportion.

7. The method of claim 5, wherein, The heating device comprises a combustible gas adjusting valve and a compressed air adjusting valve; the control of the heating device to reach the adjusted combustible gas proportion comprises: In a case where the adjusted flammable gas proportion is less than the current flammable gas proportion, at least one of decreasing the opening degree of the flammable gas adjusting valve and increasing the opening degree of the compressed air adjusting valve is controlled until the adjusted flammable gas proportion is reached.

8. The method of claim 5, wherein, The heating device comprises a flammable gas adjusting valve and a compressed air adjusting valve; and the control of the heating device to reach the adjusted flammable gas proportion comprises: In a case where the adjusted flammable gas proportion is greater than the current flammable gas proportion, at least one of increasing the opening degree of the flammable gas adjusting valve and decreasing the opening degree of the compressed air adjusting valve is controlled until the adjusted flammable gas proportion is reached.

9. The method of any one of claims 1-4, wherein, The preset heating parameter comprises a heating distance of the heating device to the battery pole piece; and the adjustment of the preset heating parameter based on the heated pole piece thickness comprises: obtaining a thickness difference between the heated pole piece thickness and a pre-heating pole piece thickness of the battery pole piece; determining an adjusted heating distance according to the thickness difference, a pole piece transportation speed, an initial reference heating distance, and a current heating distance of the heating device.

10. The method of claim 9, wherein, in a case where the heated pole piece thickness is greater than an expected thickness, the adjusted heating distance is greater than the current heating distance; in a case where the heated pole piece thickness is less than the expected thickness, the adjusted heating distance is less than the current heating distance.

11. The method of any one of claims 1-4, wherein, The method further comprises: obtaining a heated pole piece temperature of the battery pole piece; in a case where the heated pole piece temperature satisfies a temperature drop condition, controlling a temperature drop device to perform temperature drop processing on a subsequent battery pole piece.

12. The method of claim 11, wherein, The temperature drop condition comprises a preset temperature threshold, and the method further comprises: in a case where the heated pole piece temperature is greater than or equal to the preset temperature threshold, determining that the heated pole piece temperature satisfies the temperature drop condition; in a case where the heated pole piece temperature is less than the preset temperature threshold, determining that the heated pole piece temperature does not satisfy the temperature drop condition.

13. The method of claim 12, wherein, The temperature drop device comprises a cooling roller and a cooling water adjusting valve, and a surface of the cooling roller is in contact with a surface of the battery pole piece; and the control of the temperature drop device to perform temperature drop processing on the subsequent battery pole piece after the heating processing comprises: obtaining a temperature difference between the heated pole piece temperature and the preset temperature threshold; determining an adjusted valve opening degree according to the temperature difference and a current valve opening degree of the cooling water adjusting valve; controlling the cooling water adjusting valve to be opened at the adjusted valve opening degree to change a cooling water flow rate entering the cooling roller, so as to perform temperature drop processing on the subsequent battery pole piece after the heating processing.

14. A pole piece heating system, wherein, The system comprises an upper computer, a heating device, and a first thickness gauge; the upper computer is connected with the heating device and the first thickness gauge respectively; The heating device is configured to perform heating processing on a battery pole piece in a heating area according to a preset heating parameter. The first thickness gauge is located behind the heating device and is configured to measure a heated pole piece thickness of the battery pole piece. The host computer is configured to control the heating device to perform the heating process, acquire the thickness of the heated battery pole piece, and adjust the preset heating parameter according to the thickness of the heated battery pole piece when the thickness of the heated battery pole piece does not meet the thickness requirement, so as to control the heating device to perform the heating process on the subsequent battery pole piece by using the adjusted preset heating parameter.

15. The system of claim 14, wherein, The system further comprises a transmission device connected to the host computer, wherein the transmission device comprises a transmission belt and a plurality of rollers. The transmission belt is configured to carry the battery pole piece, and the rollers are configured to support the transmission belt and drive the transmission belt to transport the battery pole piece under the control of the host computer.

16. The system of claim 14 or 15, wherein, The system further comprises a second thickness gauge connected to the host computer. The second thickness gauge is located before the heating device and is configured to measure the thickness of the battery pole piece before heating.

17. The system of claim 14 or 15, wherein, The heating device comprises a gas transmission pipeline, a combustible gas regulating valve and a compressed air regulating valve arranged in the transmission pipeline. The combustible gas regulating valve is configured to regulate the flow of combustible gas passing through the gas transmission pipeline under the control of the host computer. The compressed air regulating valve is configured to regulate the flow of compressed air passing through the gas transmission pipeline under the control of the host computer.

18. The system of claim 14 or 15, wherein, The heating device comprises an ignition head and a servo motor connected to the ignition head. The ignition head is configured to ignite the gas to generate a flame under the control of the host computer. The servo motor is configured to adjust the distance between the ignition head and the battery pole piece under the control of the host computer.

19. The system of claim 14 or 15, wherein, The system further comprises a temperature measuring instrument connected to the host computer. The temperature measuring instrument is located after the heating device and is configured to measure the temperature of the heated battery pole piece.

20. The system of claim 14 or 15, wherein, The system further comprises a cooling device, wherein the cooling device comprises a cooling roller and a cooling water regulating valve, the cooling roller and the cooling water regulating valve are connected through a cooling pipeline, and the cooling roller is arranged in close contact with the battery pole piece. The cooling water regulating valve is configured to be opened under the control of the host computer to increase the flow of cooling water from the water supply device into the cooling roller through the cooling pipeline.

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