Electrode sheet flame heating system and electrode sheet flame heating method

Abstract

The present application relates to an electrode sheet flame heating system and an electrode sheet flame heating method. The electrode sheet flame heating system comprises: a combustible gas source, and a combustible gas transmission pipe connected to an output end of the combustible gas source and used for transmitting a combustible gas provided by the combustible gas source to an igniter at a first preset flow; a combustion-supporting gas source, and a combustion-supporting gas transmission pipe connected to an output end of the combustion-supporting gas source and used for transmitting a combustion-supporting gas provided by the combustion-supporting gas source to the igniter at a second preset flow; and the igniter, wherein a gas outlet of the igniter is oriented toward an electrode sheet, and the igniter is used for, upon receiving an ignition instruction, generating an electric spark to ignite a target mixed gas discharged from the gas outlet, thereby forming a flame, wherein the target mixed gas comprises a mixture of the combustible gas and the combustion-supporting gas, and the flame is used for heating the electrode sheet. The embodiments of the present application can improve the heating efficiency of the electrode sheet.

Description

Pole piece flame heating system and pole piece flame heating method CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is based on the Chinese Patent Application No. 2024112526539 entitled "Pole piece flame heating system and pole piece flame heating method" filed on September 6, 2024, which is incorporated by reference in its entirety into this application. TECHNICAL FIELD

[0002] The present application relates to the technical field of batteries, and in particular to a pole piece flame heating system and a pole piece flame heating method. BACKGROUND

[0003] Generally, during the production of a battery, a pole piece is subjected to processes such as coating, cold pressing, slitting, and die cutting. After coating is completed, the pole piece is usually subjected to baking and heating, so as to remove moisture and other volatile substances introduced during the coating process, so as to ensure the performance and stability of the battery.

[0004] In the related art, heating of the pole piece is performed by means of hot roller pressing or hot air blowing on the surface of the pole piece. However, the related art has the problem of low heating efficiency. SUMMARY

[0005] In view of the above problem, the present application provides a pole piece flame heating system and a pole piece flame heating method, which can improve the heating efficiency of the pole piece.

[0006] In a first aspect, the present application provides a pole piece flame heating system, comprising:

[0007] a combustible gas source, a combustible gas transmission pipeline connected to the output end of the combustible gas source, the output end of the combustible gas transmission pipeline being connected to the igniter, the combustible gas transmission pipeline being configured to transmit a first preset flow rate of combustible gas to the igniter based on the combustible gas provided by the combustible gas source;

[0008] an auxiliary gas source, an auxiliary gas transmission pipeline connected to the output end of the auxiliary gas source, the output end of the auxiliary gas transmission pipeline being connected to the igniter, the auxiliary gas transmission pipeline being configured to transmit a second preset flow rate of auxiliary gas to the igniter based on the auxiliary gas provided by the auxiliary gas source; wherein the ratio of the first preset flow rate to the second preset flow rate belongs to a preset mixed gas ratio range;

[0009] an igniter, the gas output port of the igniter facing the pole piece, the igniter being configured to generate an electric spark to ignite the target mixed gas output by the gas output port to form a flame when receiving an ignition instruction; wherein the target mixed gas comprises a mixture of the combustible gas and the auxiliary gas; the flame is configured to heat the pole piece.

[0010] In the embodiment of the present application, the combustible gas transmission pipeline transmits the combustible gas of the first preset flow rate to the igniter based on the combustible gas provided by the combustible gas source, the combustion-supporting gas transmission pipeline transmits the combustion-supporting gas of the second preset flow rate to the igniter based on the combustion-supporting gas provided by the combustion-supporting gas source, and the igniter with the gas output port facing the pole piece generates an electric spark to ignite the target mixed gas output by the gas output port to form a flame in the case of receiving an ignition instruction, so as to heat the pole piece by means of the flame. Since the temperature of the flame heating mode is higher, the pole piece is heated more quickly, thereby facilitating to improve the pole piece heating efficiency.

[0011] In some embodiments, the pole piece flame heating system further comprises a mixing device, wherein the first input end of the mixing device is connected with the output end of the combustible gas transmission pipeline, the second input end of the mixing device is connected with the output end of the combustion-supporting gas transmission pipeline, and the output end of the mixing device is connected with the igniter.

[0012] The mixing device is configured to mix the combustible gas of the first preset flow rate transmitted by the combustible gas transmission pipeline and the combustion-supporting gas of the second preset flow rate transmitted by the combustion-supporting gas transmission pipeline to obtain the target mixed gas, and output the target mixed gas to the igniter.

[0013] In the embodiment of the present application, by means of arranging the mixing device between the gas transmission pipeline and the igniter, the combustible gas transmitted by the combustible gas transmission pipeline and the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline can be fully mixed to obtain the target mixed gas before being transmitted to the igniter, so that the gas input to the igniter is the mixed target mixed gas, thereby facilitating to improve the flame ignition success rate of the igniter.

[0014] In some embodiments, the combustible gas transmission pipeline is provided with a combustible gas flow control valve.

[0015] The combustible gas flow control valve is configured to adjust the opening value of the combustible gas flow control valve to control the combustible gas transmission pipeline to transmit the combustible gas of the first preset flow rate to the igniter.

[0016] In the embodiment of the present application, the combustible gas flow control valve can accurately and flexibly control the combustible gas transmission pipeline to transmit the combustible gas of the first preset flow rate to the igniter by adjusting the opening value of the combustible gas flow control valve.

[0017] In some embodiments, the combustible gas transmission pipeline is further provided with a combustible gas pressure sensor, and the combustible gas pressure sensor is configured to detect the pressure value of the combustible gas transmitted by the combustible gas transmission pipeline.

[0018] The combustible gas flow control valve is specifically used for adjusting the opening value of the combustible gas flow control valve according to the first preset flow, the pressure value detected by the combustible gas pressure sensor, and the pipe diameter of the combustible gas transmission pipeline.

[0019] In some embodiments, a total combustible gas flow control valve is further arranged between the combustible gas source and the combustible gas transmission pipeline.

[0020] The total combustible gas flow control valve is used for adjusting the opening value of the total combustible gas flow control valve to control the combustible gas transmission pipeline to transmit the first preset flow of combustible gas to the igniter.

[0021] In the embodiments of the present application, the total combustible gas flow control valve can conveniently and quickly control the combustible gas transmission pipeline to transmit the first preset flow of combustible gas to the igniter by adjusting the opening value of the total combustible gas flow control valve.

[0022] In some embodiments, a first check valve is further arranged between the combustible gas source and the combustible gas transmission pipeline, and the first check valve is used for preventing the combustible gas in the combustible gas transmission pipeline from being transmitted to the combustible gas source, so as to prevent the combustible gas from flowing back to the combustible gas source, which is not only beneficial to protecting the quality of the combustible gas stored in the combustible gas source, but also beneficial to improving the stability of the combustible gas stored in the combustible gas source.

[0023] In some embodiments, a combustion-supporting gas flow control valve is arranged on the combustion-supporting gas transmission pipeline.

[0024] The combustion-supporting gas flow control valve is used for adjusting the opening value of the combustion-supporting gas flow control valve to control the combustion-supporting gas transmission pipeline to transmit the second preset flow of combustion-supporting gas to the igniter.

[0025] In the embodiments of the present application, the combustion-supporting gas flow control valve can accurately and flexibly control the combustion-supporting gas transmission pipeline to transmit the second preset flow of combustion-supporting gas to the igniter by adjusting the opening value of the combustion-supporting gas flow control valve.

[0026] In some embodiments, a combustion-supporting gas pressure sensor is further arranged on the combustion-supporting gas transmission pipeline, and the combustion-supporting gas pressure sensor is used for detecting the pressure value of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline.

[0027] The combustion-supporting gas flow control valve is specifically used for adjusting the opening value of the combustion-supporting gas flow control valve according to the second preset flow, the pressure value detected by the combustion-supporting gas pressure sensor, and the pipe diameter of the combustion-supporting gas transmission pipeline.

[0028] In some embodiments, the plurality of combustible gas transmission pipelines and the plurality of combustion-supporting gas transmission pipelines are connected to the output end of the combustible gas source and the output end of the combustion-supporting gas source respectively, the plurality of igniters are arranged in the plurality of mixing chambers, and the output end of each of the plurality of combustible gas transmission pipelines and the output end of each of the plurality of combustion-supporting gas transmission pipelines are connected to the input end of a corresponding mixing chamber.

[0029] The mixing chamber is configured to mix the first preset flow of combustible gas transmitted by the corresponding combustible gas transmission pipeline and the second preset flow of combustion-supporting gas transmitted by the corresponding combustion-supporting gas transmission pipeline to obtain a target mixed gas, and output the target mixed gas to the corresponding igniter.

[0030] In the embodiments, when the plurality of combustible gas transmission pipelines and the plurality of combustion-supporting gas transmission pipelines are provided, the plurality of mixing chambers are arranged in the mixing device, so that each of the plurality of combustible gas transmission pipelines and each of the plurality of combustion-supporting gas transmission pipelines can be connected to the corresponding igniter through the corresponding mixing chamber. The combustible gas transmitted by each of the plurality of combustible gas transmission pipelines and the combustion-supporting gas transmitted by each of the plurality of combustion-supporting gas transmission pipelines can be mixed sufficiently in the corresponding mixing chamber before being transmitted to the corresponding igniter, so that the gas input to the corresponding igniter is the target mixed gas, which is beneficial to further improve the flame ignition success rate of the igniter.

[0031] In some embodiments, the igniter comprises an ignition assembly and a spray head, wherein the input end of the spray head is connected to the output end of the corresponding mixing chamber, and the gas output port of the spray head faces the pole piece.

[0032] The spray head is configured to spray the target mixed gas toward the pole piece through the gas output port.

[0033] The ignition assembly is configured to generate an electric spark to ignite the target mixed gas output by the spray head to form a flame, so that the pole piece can be heated by the flame.

[0034] In some embodiments, a second check valve is further arranged between the input end of the spray head and the output end of the corresponding mixing chamber, and the second check valve is configured to prevent the target mixed gas in the spray head from being transmitted to the mixing chamber, so as to prevent the combustible target mixed gas from flowing back to the corresponding mixing chamber, thereby improving the stability of the pole piece flame heating system.

[0035] In some embodiments, when the pole piece flame heating system comprises a first igniter and a second igniter, the gas output port of the first igniter faces the first surface of the pole piece to form a first flame toward the first surface.

[0036] The gas output port of the second igniter faces the second surface of the pole piece to form a second flame facing the second surface.

[0037] In the embodiment of the present application, the pole piece flame heating system can utilize the flames facing different surfaces to synchronously heat different surfaces of the pole piece by including multiple igniters with gas output ports facing different surfaces of the pole piece, thereby achieving the purpose of synchronously heating the pole piece by multiple flames, and thus facilitating further improvement of the pole piece heating efficiency.

[0038] In some embodiments, the pole piece flame heating system further includes multiple pole piece driving rollers and a cooling roller, wherein the multiple pole piece driving rollers are configured to drive the pole piece to move in a first direction, and the cooling roller is configured to drive the pole piece to move in a second direction perpendicular to the first direction.

[0039] The first igniter and the second igniter are arranged between the cooling roller and an adjacent pole piece driving roller, and the directions of the first flame of the first igniter and the second flame of the second igniter are perpendicular to the second direction.

[0040] In the embodiment of the present application, the first igniter and the second igniter are arranged between the cooling roller and an adjacent pole piece driving roller, and the directions of the first flame of the first igniter and the second flame of the second igniter are perpendicular to the second direction, so that the distance between the first surface of the pole piece and the first flame of the corresponding first igniter can be the same as the distance between the second surface of the pole piece and the second flame of the corresponding second igniter, thereby facilitating uniform flame heating of different surfaces of the pole piece.

[0041] In some embodiments, the pole piece flame heating system further includes multiple ignition sensors, wherein the ignition sensors are arranged in one-to-one correspondence with the igniters.

[0042] The ignition sensor is configured to detect a flame ignition result of the corresponding igniter, and the flame ignition result is configured to indicate that the flame of the igniter is successfully ignited or that the flame is failed to be ignited.

[0043] In the embodiment of the present application, the pole piece flame heating system includes ignition sensors arranged in one-to-one correspondence with the igniters, so that the pole piece flame heating system can detect the flame ignition result of the corresponding igniter, so as to further perform other response operations according to the flame ignition result of each igniter.

[0044] In some embodiments, the pole piece flame heating system further includes multiple driving assemblies, wherein the driving assemblies are connected in one-to-one correspondence with the igniters.

[0045] The driving assembly is configured to drive the igniter to move according to a driving speed of the pole piece, so as to adjust the distance between the igniter and the pole piece.

[0046] In the embodiment of the present application, the pole piece flame heating system can make the distance between each igniter and the pole piece match the transmission speed of the pole piece by driving the igniter to move according to the transmission speed of the pole piece, so as to further improve the heating efficiency of the pole piece.

[0047] In some embodiments, the driving assembly is specifically configured to drive the igniter to move to a preset position corresponding to the transmission speed of the pole piece to adjust the distance between the igniter and the pole piece to a preset distance corresponding to the transmission speed.

[0048] In some embodiments, the driving assembly is specifically configured to:

[0049] determine the speed difference between the transmission speed of the pole piece and the preset transmission speed;

[0050] determine the position adjustment parameter of the driving assembly according to the preset position proportional coefficient, the preset position integral coefficient, the preset position differential coefficient and the speed difference;

[0051] drive the igniter to move according to the position adjustment parameter to adjust the distance between the igniter and the pole piece.

[0052] In some embodiments, the pole piece flame heating system further comprises a first thickness gauge and a second thickness gauge; wherein the first thickness gauge is configured to detect a first pole piece thickness before the flame of the igniter heats the pole piece; and the second thickness gauge is configured to detect a second pole piece thickness after the flame of the igniter heats the pole piece.

[0053] The combustible gas transmission pipeline is configured to adjust the flow of the combustible gas transmitted by the combustible gas transmission pipeline to the igniter according to the thickness difference between the first pole piece thickness and the second pole piece thickness; or the combustion-supporting gas transmission pipeline is configured to adjust the flow of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to the igniter according to the thickness difference between the first pole piece thickness and the second pole piece thickness, so as to achieve the purpose of adjusting the flow ratio of the combustible gas and the combustion-supporting gas in the target mixed gas transmitted to the igniter.

[0054] In some embodiments, the first pole piece thickness comprises a plurality of first pole piece thickness values corresponding to a plurality of preset detection positions, and the second pole piece thickness comprises a plurality of second pole piece thickness values corresponding to the plurality of preset detection positions; and the combustible gas transmission pipeline is specifically configured to:

[0055] determine the thickness difference between the first pole piece thickness value and the second pole piece thickness value of each preset detection position, respectively;

[0056] The target adjustment ratio is determined according to the thickness difference between the first pole piece thickness value and the second pole piece thickness value of each preset detection position, the preset thickness proportion coefficient, the preset thickness integral coefficient, and the preset thickness differential coefficient, and the flow of the combustible gas transmitted to the igniter by the combustible gas transmission pipeline is adjusted according to the target adjustment ratio.

[0057] The flow of the combustible gas transmitted to the igniter by the combustible gas transmission pipeline is adjusted according to the target adjustment ratio.

[0058] In the embodiments, the target adjustment ratio is determined according to the thickness difference between the first pole piece thickness value and the second pole piece thickness value of each preset detection position, the preset thickness proportion coefficient, the preset thickness integral coefficient, and the preset thickness differential coefficient, and the flow of the combustible gas transmitted to the igniter by the combustible gas transmission pipeline is adjusted according to the target adjustment ratio, which can improve the accuracy of adjusting the flow proportion of the combustible gas and the combustion-supporting gas in the target mixed gas transmitted to the igniter, thereby further improving the utilization rate of the combustible gas and the combustion-supporting gas on the basis of meeting the heating demand of the pole piece.

[0059] In some embodiments, the combustible gas transmission pipeline is specifically used for:

[0060] For each preset detection position, a sub-target adjustment ratio corresponding to the preset detection position is determined according to the preset thickness proportion coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient, and the thickness difference of the preset detection position.

[0061] The target adjustment ratio is determined according to the sub-target adjustment ratio corresponding to each preset detection position.

[0062] In some embodiments, the first pole piece thickness includes a plurality of first pole piece thickness values corresponding to a plurality of preset detection positions, and the second pole piece thickness includes a plurality of second pole piece thickness values corresponding to the plurality of preset detection positions; the combustion-supporting gas transmission pipeline is specifically used for:

[0063] The thickness difference between the first pole piece thickness value and the second pole piece thickness value of each preset detection position is determined respectively;

[0064] The target adjustment ratio is determined according to the thickness difference between the first pole piece thickness value and the second pole piece thickness value of each preset detection position, the preset thickness proportion coefficient, the preset thickness integral coefficient, and the preset thickness differential coefficient, and the flow of the combustible gas transmitted to the igniter by the combustible gas transmission pipeline is adjusted according to the target adjustment ratio.

[0065] The flow of the combustible gas transmitted to the igniter by the combustible gas transmission pipeline is adjusted according to the target adjustment ratio.

[0066] In the embodiments of the present application, the thickness difference between the first pole piece thickness value and the second pole piece thickness value corresponding to different preset detection positions, the preset thickness proportion coefficient, the preset thickness integral coefficient and the preset thickness differential coefficient are used to determine the target adjustment ratio, and the flow rate of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to the igniter is adjusted according to the target adjustment ratio. In this way, the accuracy of adjusting the flow rate proportion of the combustible gas and the combustion-supporting gas in the target mixed gas transmitted to the igniter can be improved, thereby facilitating further improvement of the utilization rate of the combustible gas and the combustion-supporting gas on the basis of meeting the heating demand of the pole piece.

[0067] In some embodiments, the pole piece flame heating system further comprises a cooling liquid transmission pipeline, a cooling roller and a temperature sensor, and the cooling liquid transmission pipeline is provided with a cooling liquid flow control valve;

[0068] The output end of the cooling liquid transmission pipeline is connected with the cooling roller, and the cooling liquid transmission pipeline is used to transmit cooling liquid to the cooling roller;

[0069] The cooling roller is used to reduce the pole piece temperature of the pole piece wound on the cooling roller by using the cooling liquid;

[0070] The temperature sensor is used to detect the pole piece temperature of the pole piece after being cooled by the cooling roller;

[0071] The cooling liquid flow control valve is used to adjust the opening value of the cooling liquid flow control valve according to the pole piece temperature detected by the temperature sensor and / or the transmission speed of the pole piece, so as to adjust the flow rate of the cooling liquid transmitted by the cooling liquid transmission pipeline to the cooling roller.

[0072] In the embodiments of the present application, the opening value of the cooling liquid flow control valve is adjusted according to the pole piece temperature detected by the temperature sensor and / or the transmission speed of the pole piece, so as to adjust the flow rate of the cooling liquid transmitted by the cooling liquid transmission pipeline to the cooling roller. In this way, the opening value of the cooling liquid flow control valve can be adjusted comprehensively considering the pole piece temperature and / or the transmission speed, and the accuracy of adjusting the flow rate of the cooling liquid transmitted by the cooling liquid transmission pipeline to the cooling roller can be improved, thereby facilitating the cooling roller to effectively cool the pole piece to the required pole piece temperature to meet the requirements of the pole piece preparation process.

[0073] In some embodiments, the cooling liquid flow control valve is specifically used for:

[0074] determining a temperature difference between the preset pole piece temperature and the pole piece temperature detected by the temperature sensor;

[0075] determining a target adjustment opening value of the cooling liquid flow control valve according to a preset flow rate proportion coefficient, a preset flow rate integral coefficient, a preset flow rate differential coefficient and the temperature difference;

[0076] The opening value of the cooling liquid flow control valve is adjusted to the target adjustment opening value to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline to the cooling roller.

[0077] In the embodiments of the present application, the target adjustment opening value of the cooling liquid flow control valve is determined according to the temperature difference between the preset pole piece temperature and the pole piece temperature detected by the temperature sensor, according to the preset flow proportionality coefficient, the preset flow integral coefficient and the preset flow differential coefficient, and the opening value of the cooling liquid flow control valve is adjusted to the target adjustment opening value, which can improve the accuracy of adjusting the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline to the cooling roller, and is beneficial to accurately and flexibly control the cooling effect of the cooling roller on the pole piece.

[0078] In some embodiments, the pole piece flame heating system further comprises: a fan connected with the accommodation space for accommodating the igniter, for discharging the gas in the accommodation space to the outside of the accommodation space;

[0079] The fan is further configured to adjust the operation mode of the fan according to the flame ignition result of the igniter and / or the operation state of the pole piece transmission roller, wherein the operation mode of the fan includes operation modes of different wind force levels.

[0080] In the embodiments of the present application, the pole piece flame heating system can further comprise a fan, and the operation mode of the fan is adjusted according to the flame ignition result of the igniter and / or the operation state of the pole piece transmission roller, which realizes the linkage of the igniter, the pole piece transmission roller and the fan, and effectively utilizes the fan to discharge the leaked combustible gas in the pole piece flame heating system to the outside of the pole piece flame heating system, thereby being beneficial to improving the operation stability of the pole piece flame heating system.

[0081] In some embodiments, the pole piece flame heating system further comprises: a combustible gas concentration sensor arranged in a preset accommodation space in the pole piece flame heating system;

[0082] The fan is further configured to adjust the operation mode of the fan according to the flame ignition result of the igniter, the operation state of the pole piece transmission roller and / or the combustible gas concentration value detected by the combustible gas concentration sensor.

[0083] In the embodiments of the present application, the pole piece flame heating system can further comprise a combustible gas concentration sensor, and the operation mode of the fan is adjusted according to the flame ignition result of the igniter, the operation state of the pole piece transmission roller and / or the combustible gas concentration value detected by the combustible gas concentration sensor, which realizes the linkage of the igniter, the pole piece transmission roller, the combustible gas concentration sensor and the fan, and effectively utilizes the fan to discharge the leaked combustible gas in the pole piece flame heating system to the outside of the pole piece flame heating system, thereby being beneficial to further improving the operation stability of the pole piece flame heating system.

[0084] In some embodiments, the combustible gas transmission pipeline is specifically configured to transmit a first preset flow of combustible gas to the igniter when the pole piece flame heating system meets a preset starting condition;

[0085] The combustion-supporting gas transmission pipeline is specifically configured to transmit a second preset flow of combustion-supporting gas to the igniter when the pole piece flame heating system meets a preset starting condition;

[0086] The preset starting condition includes at least one of the following: the first pole piece thickness before pole piece heating meets a preset thickness requirement, the transmission speed of the pole piece transmission roller meets a preset transmission speed requirement, and the transmission direction of the pole piece transmission roller meets a preset transmission direction requirement.

[0087] In the present application, by means of the combustible gas transmission pipeline transmitting a first preset flow of combustible gas to the igniter when the pole piece flame heating system meets a preset starting condition, and the combustion-supporting gas transmission pipeline transmitting a second preset flow of combustion-supporting gas to the igniter when the pole piece flame heating system meets a preset starting condition, the operation reliability of the pole piece flame heating system can be improved.

[0088] In some embodiments, the combustion-supporting gas transmission pipeline is further configured to transmit a first preset duration of combustion-supporting gas to the igniter before transmitting a second preset flow of combustion-supporting gas to the igniter; wherein the first preset duration refers to the duration required for the gas transmission pipeline of the pole piece flame heating system to be filled with combustion-supporting gas;

[0089] The combustible gas transmission pipeline is specifically configured to transmit a first preset flow of combustible gas to the igniter after the combustion-supporting gas transmission pipeline transmits a first preset duration of combustion-supporting gas to the igniter.

[0090] In the present application, before the combustible gas transmission pipeline transmits a first preset flow of combustible gas to the igniter and the combustion-supporting gas transmission pipeline transmits a second preset flow of combustion-supporting gas to the igniter, the combustion-supporting gas transmission pipeline is used to pre-transmit a first preset duration of combustion-supporting gas to the igniter, which can expel the combustible gas left in the pole piece flame heating system, so that the flow of combustible gas transmitted by the combustible gas transmission pipeline to the igniter can be more accurately controlled, thereby improving the success rate of the igniter igniting the target mixed gas.

[0091] In some embodiments, the combustible gas transmission pipeline is further configured to stop transmitting combustible gas to the igniter when the pole piece transmission roller stops running, so that the igniter cannot ignite a flame;

[0092] The combustion-supporting gas transmission pipeline is also used to continue to transmit the combustion-supporting gas to the igniter when the pole piece transmission roller stops running, and stop transmitting the combustion-supporting gas to the igniter after a second preset time length; the second preset time length refers to a time length required for the gas transmission pipeline of the pole piece flame heating system to be filled with the combustion-supporting gas, so that the combustible gas remaining in the pole piece flame heating system can be discharged, thereby facilitating improvement of operation reliability of the pole piece flame heating system.

[0093] In some embodiments, the pole piece flame heating system further comprises a controller connected with the igniter.

[0094] The controller is configured to send an ignition instruction to the igniter.

[0095] In some embodiments, the controller is further configured to output an alarm information when it is detected that the pole piece flame heating system meets a preset alarm condition, so that an operation and maintenance personnel can timely perform maintenance processing on the pole piece flame heating system.

[0096] The preset alarm condition comprises at least one of the following:

[0097] The flame ignition result fed back by any ignition sensor indicates that the flame ignition is switched from success to failure;

[0098] When the combustible gas flow control valve is in a closed state, the flame ignition result fed back by the corresponding ignition sensor indicates that the flame ignition is successful;

[0099] The flame ignition result fed back by the corresponding ignition sensor indicates that the flame ignition is failed when the target mixed gas output by the igniter at the continuous ignition gas output port exceeds a third preset time length;

[0100] The flow difference between the first preset flow of the combustible gas transmission pipeline and the actual combustible gas flow detected by the combustible gas flow sensor is greater than a preset flow threshold;

[0101] The pressure value detected by the combustible gas pressure sensor exceeds a preset pressure threshold range.

[0102] In a second aspect, the application provides a pole piece flame heating method, the method being applied to the pole piece flame heating system according to any one of the above-mentioned first aspect, and the method comprising:

[0103] Transmitting the combustible gas with a first preset flow to the igniter based on the combustible gas provided by the combustible gas source;

[0104] Transmitting the combustion-supporting gas with a second preset flow to the igniter based on the combustion-supporting gas provided by the combustion-supporting gas source; wherein the ratio of the first preset flow to the second preset flow belongs to a preset mixed gas proportion range.

[0105] In a case of receiving the ignition instruction, an electric spark is generated to ignite a target mixed gas outputted by a gas output port of the igniter to form a flame; wherein the target mixed gas comprises a mixed gas of combustible gas and combustion-supporting gas; and the flame is used to heat the pole piece.

[0106] The above description is only a summary of the technical solutions of the present application. In order to enable one of ordinary skill in the art to better understand the technical means of the present application and implement it according to the contents of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more apparent and easy to understand, the following detailed description of the specific embodiments of the present application is provided. BRIEF DESCRIPTION OF DRAWINGS

[0107] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are intended to depict only preferred embodiments of the application, and therefore should not be considered to narrow the scope of the present application in any way. Instead, they are included to provide illustration of the preferred embodiments of the present application. In the drawings:

[0108] Fig. 1 is a structural schematic diagram of a pole piece flame heating system provided by some embodiments of the present application;

[0109] Fig. 2 is a structural schematic diagram of a pole piece flame heating system provided by some other embodiments of the present application;

[0110] Fig. 3 is a structural schematic diagram of a pole piece flame heating system provided by some other embodiments of the present application;

[0111] Fig. 4 is a structural schematic diagram of a pole piece flame heating system provided by some other embodiments of the present application;

[0112] Fig. 5 is a structural schematic diagram of a pole piece flame heating system provided by some other embodiments of the present application;

[0113] Fig. 6 is a structural schematic diagram of a pole piece flame heating system provided by some other embodiments of the present application;

[0114] Fig. 7 is a structural schematic diagram of a pole piece flame heating system provided by some other embodiments of the present application;

[0115] Fig. 8 is a schematic diagram of a position setting of a pole piece and an igniter provided by an embodiment of the present application;

[0116] Fig. 9 is a schematic diagram of a position setting of a pole piece and an igniter provided by an embodiment of the present application;

[0117] Fig. 10 is a structural schematic diagram of a pole piece flame heating system provided by some other embodiments of the present application;

[0118] Fig. 11 is a structural schematic diagram of a pole piece flame heating system provided by some other embodiments of the present application;

[0119] Fig. 12 is a structural schematic diagram of a pole piece flame heating system according to some embodiments of the present application;

[0120] Fig. 13 is a structural schematic diagram of a pole piece flame heating system according to some embodiments of the present application;

[0121] Fig. 14 is a schematic diagram of a pole piece transmission direction in a pole piece flame heating system according to some embodiments of the present application;

[0122] Fig. 15 is a structural schematic diagram of a pole piece flame heating system according to some embodiments of the present application;

[0123] Fig. 16 is a flow schematic diagram of a pole piece flame heating method according to some embodiments of the present application;

[0124] Fig. 17 is a flow schematic diagram of a pole piece flame heating method according to some embodiments of the present application;

[0125] Fig. 18 is a flow schematic diagram of a pole piece flame heating method according to some embodiments of the present application;

[0126] Fig. 19 is a flow schematic diagram of a pole piece flame heating method according to some embodiments of the present application;

[0127] Fig. 20 is a flow schematic diagram of a pole piece flame heating method according to some embodiments of the present application. DETAILED DESCRIPTION

[0128] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0129] 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 the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "comprise" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0130] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more (including two), unless otherwise specifically limited.

[0131] Reference to an "embodiment" herein 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 various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0132] In the description of the embodiments of the application, the term "and / or" is merely an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it.

[0133] Generally, after the battery is coated, the pole piece needs to be baked and heated, the purpose is to remove the moisture and other volatile substances introduced during the coating process, to ensure the performance and stability of the battery. It should be understood that by baking and heating the pole piece, other effects can also be achieved, such as deburring, improving the electrolyte wettability of the pole piece, to improve the liquid injection and liquid absorption efficiency, and enhance the lithium ion conductivity of the pole piece, etc.

[0134] In the related art, the pole piece is heated by hot roller rolling or hot air blowing on the surface of the pole piece. However, the related art has the problem of low heating efficiency.

[0135] In order to solve the problem of low heating efficiency in the related art, the embodiments of the application propose to realize heating of the pole piece by flame through the linkage of the combustible gas transmission pipeline, the combustion-supporting gas transmission pipeline and the igniter. Since the temperature of the flame heating method is higher, the pole piece is heated more quickly, thereby facilitating the improvement of the pole piece heating efficiency.

[0136] In some embodiments, Figure 1 is a structural schematic diagram of a pole piece flame heating system provided by some embodiments of the application. As shown in Figure 1, the pole piece flame heating system of the embodiments of the application can include a combustible gas source 101, a combustible gas transmission pipeline 102 connected to the output end of the combustible gas source 101, and the output end of the combustible gas transmission pipeline 102 can be connected with an igniter 103. For example, the output end of the combustible gas transmission pipeline 102 can be directly connected with the igniter 103, or the output end of the combustible gas transmission pipeline 102 can be indirectly connected with the igniter 103.

[0137] The combustible gas transmission pipeline 102 in the embodiment of the present application can be used to transmit the combustible gas of the first preset flow rate to the igniter 103 based on the combustible gas provided by the combustible gas source 101. For example, the combustible gas in the embodiment of the present application can include but is not limited to any one of the following: hydrogen, methane, liquefied petroleum gas.

[0138] The pole piece flame heating system in the embodiment of the present application can further include a combustion-supporting gas source 104, a combustion-supporting gas transmission pipeline 105 connected to the output end of the combustion-supporting gas source 104, and the output end of the combustion-supporting gas transmission pipeline 105 can be connected to the igniter 103. For example, the output end of the combustion-supporting gas transmission pipeline 105 can be directly connected to the igniter 103, or the output end of the combustion-supporting gas transmission pipeline 105 can be indirectly connected to the igniter 103.

[0139] The combustion-supporting gas transmission pipeline 105 in the embodiment of the present application can be used to transmit the combustion-supporting gas of the second preset flow rate to the igniter 103 based on the combustion-supporting gas provided by the combustion-supporting gas source 104. For example, the combustion-supporting gas in the embodiment of the present application can include compressed air; of course, it can also include other strong oxidizing gases.

[0140] The ratio of the first preset flow rate to the second preset flow rate in the embodiment of the present application belongs to a preset mixed gas ratio range, so that the mixed gas of the combustible gas and the combustion-supporting gas can be successfully ignited during the pole piece flame heating process of the pole piece flame heating system. For example, the preset mixed gas ratio range can be between 3 / 7 and 5 / 7; of course, the preset mixed gas ratio range can also be other ratio ranges, and the specific value can be set according to the actual heating situation.

[0141] It should be understood that the combustible gas transmission pipeline 102 in the embodiment of the present application can be a general term, which can refer to one combustible gas transmission pipeline or multiple combustible gas transmission pipelines. The combustion-supporting gas transmission pipeline 105 in the embodiment of the present application can be a general term, which can refer to one combustion-supporting gas transmission pipeline or multiple combustion-supporting gas transmission pipelines.

[0142] The gas output port of the igniter 103 in the embodiment of the present application faces the pole piece, and is used to generate an electric spark to ignite the target mixed gas output by the gas output port to form a flame when receiving an ignition instruction; wherein the target mixed gas can include the mixed gas of the combustible gas transmitted by the combustible gas transmission pipeline 102 and the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105; the flame can be used to heat the pole piece.

[0143] Exemplarily, the igniter 103 in the embodiment of the present application can generate an electric spark to ignite the target mixed gas output by the gas output port to form a flame, so as to heat the pole piece driven to the heating area of the igniter 103, in the case of receiving the ignition instruction sent by the controller in the pole piece flame heating system, the ignition instruction sent by other control device, or the manually triggered ignition instruction. It should be understood that the pole piece in the embodiment of the present application can be moved under the driving of the pole piece transmission roller and other devices.

[0144] Exemplarily, the heating area of the igniter 103 can refer to the area within the first preset distance range of the gas output port of the igniter 103.

[0145] Compared with the heating mode of the related art, such as heating the surface of the pole piece by hot roller rolling or hot air blowing, the pole piece is heated by the flame in the embodiment of the present application. Since the temperature of the flame heating mode is higher, the pole piece is heated more quickly, so that the pole piece heating efficiency can be improved.

[0146] In summary, compared with the heating mode of the related art, such as heating the surface of the pole piece by hot roller rolling or hot air blowing, the pole piece is heated by the flame in the embodiment of the present application. Since the temperature of the flame heating mode is higher, the pole piece is heated more quickly, so that the pole piece heating efficiency can be improved.

[0147] In some embodiments, in order to improve the flame ignition success rate of the igniter 103, the combustible gas transmitted by the combustible gas transmission pipeline 102 and the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105 can be premixed before being transmitted to the igniter 103 in the embodiment of the present application.

[0148] FIG. 2 is a structural schematic diagram of a pole piece flame heating system provided by another embodiment of the present application. As shown in FIG. 2, the pole piece flame heating system in the embodiment of the present application can further include a mixing device 106, wherein the first input end of the mixing device 106 can be connected with the output end of the combustible gas transmission pipeline 102, the second input end of the mixing device 106 can be connected with the output end of the combustion-supporting gas transmission pipeline 105, and the output end of the mixing device 106 can be connected with the igniter 103.

[0149] The mixing device 106 in the embodiments of the present application can be used to mix the combustible gas of the first preset flow rate transmitted by the combustible gas transmission pipeline 102 and the combustion-supporting gas of the second preset flow rate transmitted by the combustion-supporting gas transmission pipeline 105 to obtain the target mixed gas, and output the target mixed gas to the igniter 103.

[0150] It can be seen that, in the embodiments of the present application, by arranging the mixing device between the gas transmission pipeline and the igniter, the combustible gas transmitted by the combustible gas transmission pipeline and the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline can be fully mixed before being transmitted to the igniter to obtain the target mixed gas, so that the gas input to the igniter is the well-mixed target mixed gas, which is beneficial to improve the flame ignition success rate of the igniter.

[0151] In some embodiments, the embodiments of the present application exemplarily introduce the related content of how the combustible gas transmission pipeline transmits the combustible gas of the first preset flow rate to the igniter. FIG. 3 is a structural schematic diagram of an electrode sheet flame heating system provided by another embodiment of the present application,

[0152] As shown in FIG. 3, the combustible gas transmission pipeline 102 in the embodiments of the present application can be provided with a combustible gas flow control valve S1; wherein the combustible gas flow control valve S1 can be used to adjust the opening value of the combustible gas flow control valve S1 to control the combustible gas transmission pipeline 102 to transmit the combustible gas of the first preset flow rate to the igniter 103.

[0153] Exemplarily, in the case that the electrode sheet flame heating system includes a plurality of combustible gas transmission pipelines 102, a corresponding combustible gas flow control valve S1 can be arranged on each combustible gas transmission pipeline 102, so that the combustible gas transmission pipeline 102 can transmit the combustible gas of the first preset flow rate to the igniter 103 by adjusting the opening value of the combustible gas flow control valve S1 on each combustible gas transmission pipeline 102.

[0154] It should be understood that the opening value of the combustible gas flow control valve S1 is different, and correspondingly, the flow rate of the combustible gas transmitted by the combustible gas transmission pipeline 102 to the igniter 103 is different; wherein the greater the opening value of the combustible gas flow control valve S1, the greater the flow rate of the combustible gas transmitted by the combustible gas transmission pipeline 102 to the igniter 103.

[0155] In a possible implementation manner, as shown in FIG. 3, the combustible gas transmission pipeline 102 in the embodiments of the present application can also be provided with a combustible gas pressure sensor P1; wherein the combustible gas pressure sensor P1 can be used to detect the pressure value of the combustible gas transmitted by the combustible gas transmission pipeline 102.

[0156] The combustible gas flow control valve S1 in the embodiments of the present application can be specifically used for adjusting the opening value of the combustible gas flow control valve S1 according to the first preset flow, the pressure value detected by the combustible gas pressure sensor P1, and the pipe diameter of the combustible gas transmission pipeline 102.

[0157] For example, the combustible gas flow control valve S1 can adjust the opening value of the combustible gas flow control valve S1 according to the first preset flow, the pressure value detected by the combustible gas pressure sensor P1, and the pipe diameter of the combustible gas transmission pipeline 102 by the following formula (1).

[0158] De1=F1 / Di1 / F1

[0159] Wherein, De1 represents the target adjustment opening value of the combustible gas flow control valve S1; F1 represents the first preset flow; Di1 represents the pipe diameter of the combustible gas transmission pipeline 102; F1 represents the pressure value detected by the combustible gas pressure sensor.

[0160] Of course, the combustible gas flow control valve S1 can also adjust the opening value of the combustible gas flow control valve S1 according to the first preset flow, the pressure value detected by the combustible gas pressure sensor P1, and the pipe diameter of the combustible gas transmission pipeline 102 by other deformation formulas or equivalent formulas of the above formula (1).

[0161] It should be noted that the combustible gas flow control valve S1 can also directly obtain the target adjustment opening value De1 of the combustible gas flow control valve S1 from the controller or other control devices to adjust the opening value of the combustible gas flow control valve S1 according to the target adjustment opening value De1. Wherein, the target adjustment opening value De1 can be a parameter determined by the controller or other control devices according to the first preset flow, the pressure value detected by the combustible gas pressure sensor P1, and the pipe diameter of the combustible gas transmission pipeline 102.

[0162] In another possible implementation, the combustible gas flow control valve S1 can determine a first target opening value corresponding to the first preset flow according to a preset correspondence between the combustible gas flow and the opening value, and adjust the opening value of the combustible gas flow control valve S1 according to the first target opening value. Wherein, the preset correspondence between the combustible gas flow and the opening value can be used to indicate the opening value corresponding to different preset combustible gas flows.

[0163] In another possible implementation, the combustible gas flow control valve S1 can perform proportional control operation according to a preset combustible gas and combustion-supporting gas mixture ratio to determine a second target opening value corresponding to the first preset flow, and adjust the opening value of the combustible gas flow control valve S1 according to the second target opening value.

[0164] Of course, the combustible gas flow control valve S1 can also adjust the opening value of the combustible gas flow control valve S1 in other manners.

[0165] As can be seen, in the embodiments of the present application, the combustible gas flow control valve can accurately and flexibly control the combustible gas transmission pipeline to transmit the first preset flow of combustible gas to the igniter by adjusting the opening value of the combustible gas flow control valve.

[0166] In some embodiments, FIG. 4 is a structural schematic diagram of a pole piece flame heating system provided by some other embodiments of the present application. As shown in FIG. 4, the combustible gas source 101 and the combustible gas transmission pipeline 102 in the embodiments of the present application can also be provided with a total combustible gas flow control valve Sm.

[0167] The total combustible gas flow control valve Sm in the embodiments of the present application can be used to adjust the opening value of the total combustible gas flow control valve Sm to control the combustible gas transmission pipeline 102 to transmit the first preset flow of combustible gas to the igniter 103.

[0168] It should be understood that in the case where the pole piece flame heating system in the embodiments of the present application includes a plurality of combustible gas transmission pipelines 102, the combustible gas passing through the total combustible gas flow control valve Sm can be evenly transmitted to each combustible gas transmission pipeline 102 to control each combustible gas transmission pipeline 102 to transmit the first preset flow of combustible gas to the igniter 103, respectively. For example, if the pole piece flame heating system can include m combustible gas transmission pipelines 102, the total preset flow of combustible gas passing through the total combustible gas flow control valve Sm can be equal to the product of m and the first preset flow.

[0169] For example, the total combustible gas flow control valve Sm can determine a third target opening value corresponding to the total preset flow according to the correspondence between the preset total combustible gas flow and the opening value, and adjust the opening value of the total combustible gas flow control valve Sm according to the third target opening value. Wherein, the correspondence between the preset total combustible gas flow and the opening value can be used to indicate the opening value corresponding to different preset total combustible gas flows, respectively.

[0170] Of course, the total combustible gas flow control valve Sm can also adjust the opening value of the total combustible gas flow control valve Sm in other manners.

[0171] As can be seen, in the embodiments of the present application, the total combustible gas flow control valve can conveniently and quickly control the combustible gas transmission pipeline to transmit the first preset flow of combustible gas to the igniter by adjusting the opening value of the total combustible gas flow control valve.

[0172] In some embodiments, as shown in FIG. 4, a first check valve Vr1 can be further arranged between the combustible gas source 101 and the combustible gas transmission pipeline 102, wherein the first check valve Vr1 can be used to prohibit the combustible gas in the combustible gas transmission pipeline 102 from being transmitted to the combustible gas source 101, and can prevent the combustible gas from flowing back to the combustible gas source 101, which is not only beneficial to protecting the quality of the combustible gas stored in the combustible gas source 101, but also beneficial to improving the stability of the combustible gas stored in the combustible gas source 101.

[0173] In some embodiments, the present application exemplarily introduces how the combustion-supporting gas transmission pipeline transmits the second preset flow of combustion-supporting gas to the igniter. FIG. 5 is a structural schematic diagram of a pole piece flame heating system provided by another embodiment of the present application, as shown in FIG. 5, a combustion-supporting gas flow control valve S2 can be arranged on the combustion-supporting gas transmission pipeline 105 in the embodiment of the present application; wherein the combustion-supporting gas flow control valve S2 can be used to adjust the opening value of the combustion-supporting gas flow control valve S2, so as to control the combustion-supporting gas transmission pipeline 106 to transmit the second preset flow of combustion-supporting gas to the igniter 103.

[0174] For example, in the case that the pole piece flame heating system includes a plurality of combustion-supporting gas transmission pipelines 106, a corresponding combustion-supporting gas flow control valve S2 can be arranged on each combustion-supporting gas transmission pipeline 105, so as to control each combustion-supporting gas transmission pipeline 105 to transmit the second preset flow of combustion-supporting gas to the igniter 103 by adjusting the opening value of the combustion-supporting gas flow control valve S2 on each combustion-supporting gas transmission pipeline 105.

[0175] It should be understood that the opening value of the combustion-supporting gas flow control valve S2 is different, and correspondingly, the flow of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105 to the igniter 103 is different; wherein the greater the opening value of the combustion-supporting gas flow control valve S2, the greater the flow of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105 to the igniter 103.

[0176] In a possible implementation manner, as shown in FIG. 5, a combustion-supporting gas pressure sensor P2 can be further arranged on the combustion-supporting gas transmission pipeline 105 in the embodiment of the present application; wherein the combustion-supporting gas pressure sensor P2 can be used to detect the pressure value of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105.

[0177] The combustion-supporting gas flow control valve S2 in the embodiment of the present application can be specifically used to adjust the opening value of the combustion-supporting gas flow control valve S2 according to the second preset flow, the pressure value detected by the combustion-supporting gas pressure sensor P2 and the pipe diameter of the combustion-supporting gas transmission pipeline 105.

[0178] For example, the combustion-supporting gas flow control valve S2 can adjust the opening value of the combustion-supporting gas flow control valve S2 according to the second preset flow, the pressure value detected by the combustion-supporting gas pressure sensor P2, and the pipe diameter of the combustion-supporting gas transmission pipeline 105, by using the following formula (2).

[0179] De2=F2 / Di2 / F2

[0180] wherein De2 represents the target adjustment opening value of the combustion-supporting gas flow control valve S2; F2 represents the second preset flow; Di2 represents the pipe diameter of the combustion-supporting gas transmission pipeline 105; and F2 represents the pressure value detected by the combustion-supporting gas pressure sensor P2.

[0181] Of course, the combustion-supporting gas flow control valve S2 can also adjust the opening value of the combustion-supporting gas flow control valve S2 according to the second preset flow, the pressure value detected by the combustion-supporting gas pressure sensor P2, and the pipe diameter of the combustion-supporting gas transmission pipeline 105, by using other modified formulas or equivalent formulas of the above formula (2).

[0182] It should be noted that the combustion-supporting gas flow control valve S2 can also obtain the target adjustment opening value De2 of the combustion-supporting gas flow control valve S2 directly from the controller or other control device, so as to adjust the opening value of the combustion-supporting gas flow control valve S2 according to the target adjustment opening value De2. The target adjustment opening value De2 can be a parameter determined by the controller or other control device according to the second preset flow, the pressure value detected by the combustion-supporting gas pressure sensor P2, and the pipe diameter of the combustion-supporting gas transmission pipeline 105.

[0183] In another possible implementation, the combustion-supporting gas flow control valve S2 can determine a fourth target opening value corresponding to the second preset flow according to a preset correspondence between preset combustion-supporting gas flows and opening values, and adjust the opening value of the combustion-supporting gas flow control valve S2 according to the fourth target opening value. The preset correspondence between preset combustion-supporting gas flows and opening values can be used to indicate the opening values corresponding to different preset combustion-supporting gas flows, respectively.

[0184] In another possible implementation, the combustion-supporting gas flow control valve S2 can perform proportional control calculation according to a preset mixed gas ratio of the combustible gas and the combustion-supporting gas, so as to determine a fifth target opening value corresponding to the second preset flow, and adjust the opening value of the combustion-supporting gas flow control valve S2 according to the fifth target opening value.

[0185] Of course, the combustion-supporting gas flow control valve S2 can also adjust the opening value of the combustion-supporting gas flow control valve S2 by other manners.

[0186] It can be seen that, in the embodiment of the present application, the combustion-supporting gas flow control valve can accurately and flexibly control the combustion-supporting gas transmission pipeline to transmit the second preset flow of combustion-supporting gas to the igniter by adjusting the opening value of the combustion-supporting gas flow control valve.

[0187] In some embodiments, in the case that the pole piece flame heating system includes a plurality of combustible gas transmission pipelines 102 and a plurality of combustion-supporting gas transmission pipelines 105, the embodiment of the present application exemplarily introduces the related content of the mixing device 106.

[0188] FIG. 6 is a structural schematic diagram of a pole piece flame heating system provided by another embodiment of the present application. As shown in FIG. 6, in the case that the output end of the combustible gas source 101 is connected with the input end of the plurality of combustible gas transmission pipelines 102, and the output end of the combustion-supporting gas source 104 is connected with the input end of the plurality of combustion-supporting gas transmission pipelines 105, the pole piece flame heating system in the embodiment of the present application can include a plurality of igniters 103, and the mixing device 106 includes a plurality of mixing chambers 106B.

[0189] Exemplarily, the output end of each combustible gas transmission pipeline 102 and the output end of each combustion-supporting gas transmission pipeline 105 can be respectively connected with the input end of the corresponding mixing chamber 106B, and the output end of each mixing chamber 106B can be respectively connected with the corresponding igniter 103.

[0190] It should be understood that each mixing chamber 106B can be respectively connected with one combustible gas transmission pipeline 102 and one combustion-supporting gas transmission pipeline 105. Exemplarily, the first input end of each mixing chamber 106B can be connected with the corresponding combustible gas transmission pipeline 102, the second input end can be connected with the corresponding combustion-supporting gas transmission pipeline 105, and the output end can be connected with the corresponding igniter 103.

[0191] The mixing chamber 106B in the embodiment of the present application can be used to mix the first preset flow of combustible gas transmitted by the corresponding combustible gas transmission pipeline 102 and the second preset flow of combustion-supporting gas transmitted by the corresponding combustion-supporting gas transmission pipeline 105 to obtain the target mixed gas, and output the target mixed gas to the corresponding igniter 103.

[0192] It should be understood that the target mixed gas outputted by each mixing chamber 106B to the corresponding igniter 103 in the embodiment of the present application is the mixed gas of the first preset flow of combustible gas and the second preset flow of combustion-supporting gas, which is beneficial to further improve the flame ignition success rate of the igniter.

[0193] It can be seen that, in the case that the pole piece flame heating system includes a plurality of combustible gas transmission pipelines and a plurality of combustion-supporting gas transmission pipelines, the mixing device includes a plurality of mixing chambers, so that each combustible gas transmission pipeline and each combustion-supporting gas transmission pipeline can be connected to the corresponding igniter through the corresponding mixing chamber, and the combustible gas transmitted by each combustible gas transmission pipeline and the combustion-supporting gas transmitted by each combustion-supporting gas transmission pipeline can be mixed sufficiently in the corresponding mixing chamber before being transmitted to the corresponding igniter, so that the gas input into the corresponding igniter is the mixed target mixed gas, which is beneficial to further improve the flame ignition success rate of the igniter.

[0194] In some embodiments, the related content of the igniter 103 is exemplarily introduced. FIG. 7 is a structural schematic diagram of a pole piece flame heating system provided by some other embodiments of the present application. As shown in FIG. 7, the igniter 103 in the embodiments of the present application can include an ignition assembly 1030 and a spray head 1031. The input end of the spray head 1031 can be connected to the output end of the corresponding mixing chamber 106B, and the gas output port of the spray head 1031 can face the pole piece.

[0195] The spray head 1031 in the embodiments of the present application can be used to spray the target mixed gas toward the pole piece through the gas output port; and the ignition assembly 1030 can be used to generate an electric spark to ignite the target mixed gas output by the spray head 1031 to form a flame, so that the target of heating the pole piece by the flame can be achieved.

[0196] In some embodiments, as shown in FIG. 7, a second check valve Vr2 is further arranged between the input end of the spray head 1031 and the output end of the corresponding mixing chamber 106B. The second check valve Vr2 can be used to prevent the target mixed gas in the spray head 1031 from being transmitted to the mixing chamber 106B, and can prevent the ignitable target mixed gas from flowing back to the corresponding mixing chamber 106B, thereby being beneficial to improve the stability of the pole piece flame heating system.

[0197] In some embodiments, in the case that the pole piece flame heating system includes a plurality of igniters 103, the plurality of igniters 103 can be arranged on different surfaces of the pole piece, so that the flames formed by the igniters 103 on different surfaces can simultaneously heat the different surfaces of the pole piece, thereby being beneficial to further improve the pole piece heating efficiency. It should be understood that the arrangement of any igniter 103 on any surface of the pole piece in the embodiments of the present application can mean that the flame formed by the igniter 103 faces the surface of the pole piece.

[0198] In some embodiments, FIG. 8 is a schematic diagram I of a position setting of the pole piece and the igniter provided by the embodiments of the present application, as shown in FIG. 8, in the case where the pole piece flame heating system includes the first igniter 103A and the second igniter 103B, the gas output port of the first igniter 103A can be directed towards the first surface S1 of the pole piece E to form a first flame directed towards the first surface S1, so as to facilitate heating of the first surface S1 of the pole piece.

[0199] The gas output port of the second igniter 103B in the embodiments of the present application can be directed towards the second surface S2 of the pole piece E to form a second flame directed towards the second surface S2, so as to facilitate heating of the second surface S2 of the pole piece.

[0200] It should be understood that the first igniter 103A in the embodiments of the present application can be a general term, which can refer to one first igniter, or can refer to a plurality of first igniters; the second igniter 103B in the embodiments of the present application can be a general term, which can refer to one second igniter, or can refer to a plurality of second igniters.

[0201] It can be seen that, in the embodiments of the present application, the pole piece flame heating system can utilize the flames directed towards different surfaces to simultaneously heat different surfaces of the pole piece by including a plurality of igniters with gas output ports directed towards different surfaces of the pole piece, thereby achieving the purpose of simultaneously heating the pole piece by multiple flames, and thus facilitating further improvement of the pole piece heating efficiency.

[0202] In some embodiments, in order to more uniformly heat different surfaces of the pole piece, the embodiments of the present application exemplarily introduce and describe the directions of the first flame and the second flame.

[0203] FIG. 9 is a schematic diagram II of a position setting of the pole piece and the igniter provided by the embodiments of the present application, as shown in FIG. 9, the pole piece flame heating system in the embodiments of the present application can further include a plurality of pole piece driving rollers 107 and a cooling roller 108. The plurality of pole piece driving rollers 107 can be used to drive the pole piece to move along a first direction D1, so as to facilitate transmission of the pole piece from a previous preparation process to a next preparation process.

[0204] The cooling roller 108 in the embodiments of the present application can be used to drive the pole piece to move along a second direction D2, which is beneficial to cooling of the temperature of the pole piece and also beneficial to uniform heating of different surfaces of the pole piece. The second direction D2 is perpendicular to the first direction D1.

[0205] In the embodiment of the present application, considering that the plurality of pole piece transmission rollers 107 drive the pole piece to move along the first direction D1, due to the gravity of the pole piece, the pole piece will naturally sag in some areas. If the flame direction of the igniter corresponding to the different surfaces of the pole piece is perpendicular to the first direction D1 to heat the pole piece, the distance between the different surfaces of the pole piece and the corresponding flame may be different, so that the different surfaces of the pole piece cannot be uniformly heated by the flame.

[0206] The first igniter 103A and the second igniter 103B in the embodiment of the present application can be arranged between the cooling roller 108 and the adjacent pole piece transmission roller 107, and the direction of the first flame of the first igniter 103A and the second flame of the second igniter 103B is perpendicular to the second direction D2, that is, the distance between the first surface S1 of the pole piece and the first flame of the corresponding first igniter 103A can be the same as the distance between the second surface S2 of the pole piece and the second flame of the corresponding second igniter 103B, which is beneficial to uniformly heat the different surfaces of the pole piece by the flame.

[0207] As can be seen, in the embodiment of the present application, by arranging the first igniter and the second igniter between the cooling roller and the adjacent pole piece transmission roller, and the direction of the first flame of the first igniter and the second flame of the second igniter is perpendicular to the second direction, the distance between the first surface of the pole piece and the first flame of the corresponding first igniter can be the same as the distance between the second surface of the pole piece and the second flame of the corresponding second igniter, so as to facilitate uniform heating of the different surfaces of the pole piece by the flame.

[0208] In some embodiments, in order to detect the flame ignition result of the igniter 103, as shown in FIG. 7, the pole piece flame heating system in the embodiment of the present application can further include a plurality of ignition sensors 109, wherein the ignition sensor 109 can be arranged one-to-one with the igniter 103. It should be understood that the ignition sensor 109 and the corresponding igniter 103 can be separately arranged or can be integrated. In the case of integrated arrangement of the ignition sensor 109 and the corresponding igniter 103, it can be called an electronic igniter, which has the functions of electronic ignition operation and feedback of the flame ignition result.

[0209] The ignition sensor 109 in the embodiment of the present application can be used to detect the flame ignition result of the corresponding igniter 103, wherein the flame ignition result can be used to indicate that the flame ignition is successful or the flame ignition fails.

[0210] For example, when the ignition sensor 109 is separately arranged from the corresponding igniter 103, the ignition sensor 109 of the electrode flame heating system can feed back the detected flame ignition result to the igniter 103, so that the igniter 103 can learn the flame ignition result and further perform other response operations (for example, in the case of flame ignition failure, the igniter 103 performs the operation of igniting the flame again, etc.) according to the flame ignition result.

[0211] For another example, the ignition sensor 109 of the electrode flame heating system can feed back the detected flame ignition result to the controller or other control device, so that the controller or other control device can learn the flame ignition result and further perform other response operations (for example, in the case of flame ignition failure, the igniter 103 can be instructed to perform the operation of igniting the flame again, etc.) according to the flame ignition result.

[0212] In a possible implementation, the ignition sensor 109 can indicate different flame ignition results by different preset values. For example, if the ignition sensor 109 feeds back a first preset value as the flame ignition result, the ignition sensor 109 can be used to indicate that the corresponding igniter 103 successfully ignites the flame; if the ignition sensor 109 feeds back a second preset value as the flame ignition result, the ignition sensor 109 can be used to indicate that the corresponding igniter 103 fails to ignite the flame; and the first preset value is greater than the second preset value.

[0213] In another possible implementation, the ignition sensor 109 can indicate different flame ignition results by different level values. For example, if the ignition sensor 109 feeds back a first level value as the flame ignition result, the ignition sensor 109 can be used to indicate that the corresponding igniter 103 successfully ignites the flame; if the ignition sensor 109 feeds back a second level value as the flame ignition result, the ignition sensor 109 can be used to indicate that the corresponding igniter 103 fails to ignite the flame; and the first level value is greater than the second level value.

[0214] As can be seen, in the electrode flame heating system, the ignition sensor corresponding to each igniter can detect the flame ignition result of the corresponding igniter, so that the electrode flame heating system can further perform other response operations according to the flame ignition result of each igniter.

[0215] In some embodiments, in order to control the igniter more flexibly, as shown in FIG. 7, the electrode flame heating system can further include a plurality of driving assemblies 110, wherein the driving assembly 110 can be connected to the igniter 103 one by one. For example, the driving assembly 110 of the electrode flame heating system can include but is not limited to a driving motor or a hydraulic driving member.

[0216] In consideration of the fact that the transmission speed of the pole piece can change, the flame heating distance corresponding to different transmission speeds needs to change, the driving assembly 110 in the embodiment of the present application can be used to drive the igniter 103 to move according to the transmission speed of the pole piece, so as to adjust the distance between the igniter 103 and the pole piece.

[0217] In a possible implementation manner, the driving assembly 110 can be specifically configured to drive the igniter 103 to move to a preset position corresponding to the transmission speed of the pole piece according to the transmission speed of the pole piece, so as to adjust the distance between the igniter 103 and the pole piece to a preset distance corresponding to the transmission speed.

[0218] For example, the driving assembly 110 can determine the preset position corresponding to the transmission speed of the pole piece according to the correspondence between the preset transmission speed and the position, and drive the igniter 103 to move to the preset position corresponding to the transmission speed, so as to adjust the distance between the igniter 103 and the pole piece to a preset distance corresponding to the transmission speed.

[0219] For another example, the driving assembly 110 can obtain the preset position corresponding to the transmission speed, and drive the igniter 103 to move to the preset position corresponding to the transmission speed, so as to adjust the distance between the igniter 103 and the pole piece to a preset distance corresponding to the transmission speed. The preset position can be a position determined by the controller according to the correspondence between the transmission speed and the position, or can be a position input by a user, etc.

[0220] In another possible implementation manner, the driving assembly 110 can be specifically configured to: determine a speed difference between the transmission speed of the pole piece and a preset transmission speed; determine a position adjustment parameter of the driving assembly 110 according to a preset position proportional coefficient, a preset position integral coefficient, a preset position differential coefficient and the speed difference; and drive the igniter 103 to move according to the position adjustment parameter, so as to adjust the distance between the igniter 103 and the pole piece.

[0221] In the implementation manner, the driving assembly 110 can determine the position adjustment parameter of the driving assembly 110 according to the preset position proportional coefficient, the preset position integral coefficient, the preset position differential coefficient and the speed difference between the transmission speed of the pole piece and the preset transmission speed, through the following formula (3).

[0222] Mv1’=(Kp1*Ek1+Kp1(1 / Ti1∫_0^tEk1dt)+Kp1*Td1*dEk1 / dt) Formula (3)

[0223] Wherein, Mv1’ represents the position adjustment parameter of the driving assembly 110; Ek1 represents the speed difference between the transmission speed of the pole piece and the preset transmission speed; Kp1 represents the preset position proportional coefficient; Ti1 represents the preset position integral coefficient; and Td1 represents the preset position differential coefficient.

[0224] Of course, the driving assembly 110 can also determine the position adjustment parameter of the driving assembly 110 through other deformations or equivalent formulas of the above formula (3) according to the preset position proportional coefficient, the preset position integral coefficient, the preset position differential coefficient and the speed difference.

[0225] Further, the driving assembly 110 can drive the igniter 103 to move according to the position adjustment parameter, and can more accurately adjust the distance between the igniter 103 and the pole piece, so that the distance between the igniter 103 and the pole piece can match the transmission speed of the pole piece, which is beneficial to further improve the heating efficiency of the pole piece.

[0226] It should be noted that the driving assembly 110 can also directly obtain the position adjustment parameter of the driving assembly 110 from the controller or other control device to drive the igniter 103 to move according to the position adjustment parameter, and can adjust the distance between the igniter 103 and the pole piece. The position adjustment parameter of the driving assembly 110 can be a parameter determined by the controller or other control device according to the preset position proportional coefficient, the preset position integral coefficient, the preset position differential coefficient and the speed difference.

[0227] As can be seen, in the embodiment of the present application, the pole piece flame heating system can make the distance between each igniter and the pole piece match the transmission speed of the pole piece by including driving assemblies connected one-to-one with each igniter, driving the igniter assembly to move according to the transmission speed of the pole piece to adjust the distance between the igniter and the pole piece, which is beneficial to further improve the heating efficiency of the pole piece.

[0228] In some embodiments, FIG. 10 is a structural schematic diagram of a pole piece flame heating system provided by another embodiment of the present application, as shown in FIG. 10, the pole piece flame heating system can also include a first thickness gauge 111 and a second thickness gauge 112; wherein the first thickness gauge 111 can be used to detect a first pole piece thickness before the flame of the igniter 103 heats the pole piece; and the second thickness gauge 112 can be used to detect a second pole piece thickness after the flame of the igniter 103 heats the pole piece.

[0229] For example, the first pole piece thickness can include a pole piece thickness corresponding to a preset detection position, and the second pole piece thickness can include a pole piece thickness corresponding to the preset detection position. For example, the preset detection position can be a center point position of the pole piece in the width direction.

[0230] For another example, the first pole piece thickness can include a plurality of first pole piece thickness values corresponding to a plurality of preset detection positions, and the second pole piece thickness can include a plurality of second pole piece thickness values corresponding to the plurality of preset detection positions. For example, the plurality of preset detection positions can be positions corresponding to every first preset distance interval in the width direction of the pole piece.

[0231] The combustible gas transmission pipeline 102 in the embodiments of the present application can be used to adjust the flow of combustible gas transmitted by the combustible gas transmission pipeline to the igniter according to the thickness difference between the first pole piece thickness and the second pole piece thickness; or the combustion-supporting gas transmission pipeline 105 in the embodiments of the present application can be used to adjust the flow of combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to the igniter according to the thickness difference between the first pole piece thickness and the second pole piece thickness, so that the flow ratio of combustible gas and combustion-supporting gas in the target mixed gas transmitted to the igniter 103 can be adjusted, thereby the flame size can be adjusted, and the flame temperature is different, thereby not only the pole piece is protected, but also the utilization rate of combustible gas and combustion-supporting gas is improved.

[0232] It should be understood that in the embodiments of the present application, the purpose of adjusting the flow ratio of combustible gas and combustion-supporting gas in the target mixed gas transmitted to the igniter 103 can be achieved by the way that the combustible gas transmission pipeline 102 adjusts the flow of combustible gas transmitted by the combustible gas transmission pipeline to the igniter according to the thickness difference between the first pole piece thickness and the second pole piece thickness, or by the way that the combustion-supporting gas transmission pipeline 105 adjusts the flow of combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to the igniter according to the thickness difference between the first pole piece thickness and the second pole piece thickness.

[0233] In the following embodiments of the present application, the related content of "the combustible gas transmission pipeline 102 adjusts the flow of combustible gas transmitted by the combustible gas transmission pipeline to the igniter according to the thickness difference between the first pole piece thickness and the second pole piece thickness" is exemplarily introduced and described.

[0234] In a possible implementation manner, the combustible gas transmission pipeline 102 can be used to compare the thickness difference with a preset thickness difference range, so as to adjust the flow of combustible gas transmitted by the combustible gas transmission pipeline to the igniter.

[0235] In another possible implementation manner, the combustible gas transmission pipeline 102 can be used to respectively determine the thickness difference between the first pole piece thickness value and the second pole piece thickness value at each preset detection position; determine a target adjustment ratio value according to a preset thickness proportion coefficient, a preset thickness integral coefficient, a preset thickness differential coefficient and the thickness difference at each preset detection position; wherein the target adjustment ratio value is the adjusted flow ratio of combustible gas transmitted by the combustible gas transmission pipeline 102 to the igniter 103 and combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105 to the igniter 103; and adjust the flow of combustible gas transmitted by the combustible gas transmission pipeline 105 to the igniter 103 according to the target adjustment ratio value.

[0236] In the present implementation, for each preset detection position, the combustible gas transmission pipeline 102 can determine a thickness difference value between the first pole piece thickness value and the second pole piece thickness value of the preset detection position.

[0237] Further, for each preset detection position, the combustible gas transmission pipeline 102 can determine a sub-target adjustment ratio value corresponding to the preset detection position according to the preset thickness proportional coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient, and the thickness difference value of the preset detection position.

[0238] For example, the combustible gas transmission pipeline 102 can determine the sub-target adjustment ratio value corresponding to the preset detection position according to the preset thickness proportional coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient, and the thickness difference value of the preset detection position by the following formula (4).

[0239] Mvk = (Kp2*Ek2 + Kp2(1 / Ti2∫_0^t Ek2dt) + Kp2*Td2*dEk2 / dt) Formula (4)

[0240] Wherein, Mvk represents the sub-target adjustment ratio value corresponding to the kth preset detection position; k is an integer greater than 0; Ek2 represents the thickness difference value between the first pole piece thickness value and the second pole piece thickness value of the kth preset detection position; Kp2 represents the preset thickness proportional coefficient; Ti2 represents the preset thickness integral coefficient; Td2 represents the preset thickness differential coefficient.

[0241] Of course, the combustible gas transmission pipeline 102 can also determine the sub-target adjustment ratio value corresponding to the preset detection position according to the preset thickness proportional coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient, and the thickness difference value of the preset detection position by other transformations or equivalent formulas of the above formula (4).

[0242] Further, the combustible gas transmission pipeline 102 can determine the target adjustment ratio value according to the sub-target adjustment ratio value corresponding to each preset detection position.

[0243] For example, the combustible gas transmission pipeline 102 can take the mean value, the minimum value, or the maximum value of the sub-target adjustment ratio value corresponding to each preset detection position as the target adjustment ratio value.

[0244] For another example, the combustible gas transmission pipeline 102 can determine the target adjustment ratio value according to the sub-target adjustment ratio value corresponding to each preset detection position by the following formula (5).

[0245] SV1 = SV0*K + Mv1*TMI + Mv2*TM2 … + Mvk*TMk Formula (5)

[0246] Wherein, SV1 represents the target adjustment ratio; SV0 represents the current flow ratio of the combustible gas transmitted by the combustible gas transmission pipeline 102 to the igniter 103 to the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105 to the igniter 103 before adjustment; TMk represents the influence coefficient corresponding to the kth preset detection position. The influence coefficient corresponding to the kth preset detection position is negatively correlated with the distance between the kth preset detection position and the igniter 103, for example, the farther the distance, the smaller the influence coefficient, and the closer the distance, the greater the influence coefficient.

[0247] Of course, the combustible gas transmission pipeline 102 can also determine the target adjustment ratio according to the sub-target adjustment ratio corresponding to each preset detection position through other deformations or equivalent formulas of the above formula (5).

[0248] It should be noted that the combustible gas transmission pipeline 102 can also determine the target adjustment ratio through other ways according to the preset thickness proportion coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient, and the thickness difference of each preset detection position. For example, the combustible gas transmission pipeline 102 can determine a target thickness difference according to the thickness difference of each preset detection position, and determine the target adjustment ratio through a formula similar to the above formula (4) according to the preset thickness proportion coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient, and the target thickness difference; wherein, the target thickness difference can be the mean, minimum value, or maximum value of the thickness difference of each detection position, etc.

[0249] Further, the combustible gas transmission pipeline 102 can adjust the flow of the combustible gas transmitted by the combustion-supporting gas transmission pipeline 105 to the igniter 103 according to the target adjustment ratio, so that the flow ratio of the combustible gas transmitted by the combustible gas transmission pipeline 102 to the igniter 103 to the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105 to the igniter 103 can reach the target adjustment ratio.

[0250] It should be noted that the combustible gas transmission pipeline 102 can also directly obtain the target adjustment ratio from the controller or other control devices to adjust the flow of the combustible gas transmitted by the combustion-supporting gas transmission pipeline 105 to the igniter 103 according to the target adjustment ratio. Wherein, the target adjustment ratio can be a ratio determined by the controller or other control devices according to the preset thickness proportion coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient, and the thickness difference of each preset detection position.

[0251] It can be seen that, in the embodiment of the present application, the thickness difference between the first pole piece thickness value and the second pole piece thickness value according to different preset detection positions, the preset thickness proportion coefficient, the preset thickness integral coefficient and the preset thickness differential coefficient are used to determine the target adjustment ratio, and the flow rate of the combustible gas transmitted by the combustible gas transmission pipeline to the igniter is adjusted according to the target adjustment ratio. The accuracy of adjusting the flow rate proportion of the combustible gas and the combustion-supporting gas in the target mixed gas transmitted to the igniter can be improved, thereby further improving the utilization rate of the combustible gas and the combustion-supporting gas on the basis of meeting the pole heating demand.

[0252] In the following embodiments of the present application, the related content of "the combustion-supporting gas transmission pipeline 105 adjusts the flow rate of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to the igniter according to the thickness difference between the first pole piece thickness and the second pole piece thickness" is exemplarily introduced and described.

[0253] In a possible implementation manner, the combustion-supporting gas transmission pipeline 105 can be used to compare the thickness difference with the preset thickness difference range, so as to adjust the flow rate of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to the igniter.

[0254] In another possible implementation manner, the combustion-supporting gas transmission pipeline 105 can be used to respectively determine the thickness difference between the first pole piece thickness value and the second pole piece thickness value at each preset detection position; determine a target adjustment ratio according to the preset thickness proportion coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient and the thickness difference at each preset detection position; wherein the target adjustment ratio is the flow rate ratio of the combustible gas transmitted by the combustible gas transmission pipeline 102 to the igniter 103 and the adjusted flow rate of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105 to the igniter 103; and adjust the flow rate of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105 to the igniter 103 according to the target adjustment ratio.

[0255] In the present implementation manner, the combustion-supporting gas transmission pipeline 105 determines the target adjustment ratio according to the preset thickness proportion coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient and the thickness difference at each preset detection position, which can refer to the related content of "the combustible gas transmission pipeline 102 determines the target adjustment ratio according to the preset thickness proportion coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient and the thickness difference at each preset detection position" in the above-mentioned embodiments, which will not be described herein again.

[0256] Further, the combustion-supporting gas transmission pipeline 105 can adjust the flow rate of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105 to the igniter 103 according to the target adjustment ratio, so that the flow rate ratio of the combustible gas transmitted by the combustible gas transmission pipeline 102 to the igniter 103 and the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105 to the igniter 103 can reach the target adjustment ratio.

[0257] It should be noted that the combustion-supporting gas transmission pipeline 105 can also directly obtain a target adjustment ratio from the controller or other control device to adjust the flow of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105 to the igniter 103 according to the target adjustment ratio. The target adjustment ratio can be a ratio determined by the controller or other control device according to the preset thickness proportional coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient, and the thickness difference of each preset detection position.

[0258] It can be seen that, in the embodiments of the present application, the target adjustment ratio is determined according to the thickness difference between the first pole piece thickness value and the second pole piece thickness value of different preset detection positions, the preset thickness proportional coefficient, the preset thickness integral coefficient, and the preset thickness differential coefficient, and the flow ratio of the combustible gas and the combustion-supporting gas in the target mixed gas transmitted to the igniter is adjusted according to the target adjustment ratio. The accuracy of adjusting the flow ratio of the combustible gas and the combustion-supporting gas in the target mixed gas transmitted to the igniter can be improved, thereby facilitating further improvement of the utilization rate of the combustible gas and the combustion-supporting gas on the basis of meeting the pole piece heating demand.

[0259] In some embodiments, considering that the pole piece needs to be cooled after being heated, FIG. 11 is a structural schematic diagram of a pole piece flame heating system provided by some other embodiments of the present application. As shown in FIG. 11, the pole piece flame heating system in the embodiments of the present application can further include a cooling liquid transmission pipeline 113, a cooling roller 108, and a temperature sensor 114, and the cooling liquid transmission pipeline 113 can be provided with a cooling liquid flow control valve S3 so as to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline 113 to the cooling roller 108.

[0260] The output end of the cooling liquid transmission pipeline 113 in the embodiments of the present application can be connected with the cooling roller 108 for transmitting cooling liquid to the cooling roller 108. For example, the input end of the cooling liquid transmission pipeline 113 can be connected with a cooling liquid source inside the pole piece flame heating system, or can be connected with a cooling liquid transmission passage or a cooling liquid source outside the pole piece flame heating system.

[0261] The cooling roller 108 in the embodiments of the present application can be used to reduce the pole piece temperature of the pole piece wound on the cooling roller 108 by using cooling liquid.

[0262] It should be understood that after the cooling liquid enters the cooling roller 108, the temperature of the cooling roller 108 is reduced so as to cool the pole piece wound on the cooling roller 108.

[0263] It should be noted that after the pole piece is heated by the flame of the igniter 103, the pole piece transmission roller will drive the heated pole piece to the cooling roller 108.

[0264] The temperature sensor 114 in the embodiments of the present application can be used to detect the temperature of the electrode sheet after the electrode sheet is cooled by the cooling roller 108. For example, the temperature sensor 114 can include, but is not limited to, any one of the following: an infrared temperature sensor, a thermocouple sensor, a thermal resistance sensor, and an optical fiber high-temperature sensor.

[0265] It should be noted that the temperature sensor 114 in the embodiments of the present application can be collectively referred to as one or more temperature sensors. In the case where the electrode sheet flame heating system includes a plurality of temperature sensors, the plurality of temperature sensors can be arranged at positions corresponding to the second preset distance intervals in the width direction of the electrode sheet.

[0266] The cooling liquid flow control valve S3 in the embodiments of the present application can be used to adjust the opening value of the cooling liquid flow control valve S3 according to the temperature of the electrode sheet detected by the temperature sensor 114 and / or the transmission speed of the electrode sheet, so as to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline 113 to the cooling roller 108.

[0267] It should be understood that the size of the opening value of the cooling liquid flow control valve S3 is positively correlated with the flow of the cooling liquid. For example, the greater the opening value of the cooling liquid flow control valve S3, the greater the flow of the cooling liquid.

[0268] In addition, the flow of the cooling liquid is positively correlated with the cooling effect (or cooling capacity). For example, the greater the flow of the cooling liquid, the better the cooling effect.

[0269] In some embodiments, the cooling liquid flow control valve S3 can adjust the opening value of the cooling liquid flow control valve S3 according to the temperature of the electrode sheet detected by the temperature sensor 114, so as to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline 113 to the cooling roller 108.

[0270] In one possible implementation, the cooling liquid flow control valve S3 can adjust the opening value of the cooling liquid flow control valve S3 according to the comparison between the temperature of the electrode sheet detected by the temperature sensor 114 and the preset electrode sheet temperature.

[0271] For example, if the temperature of the electrode sheet detected by the temperature sensor 114 is greater than the preset electrode sheet temperature, the cooling liquid flow control valve S3 can adjust the opening value to a first preset opening value, so as to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline 113 to the cooling roller 108.

[0272] For example, if the electrode temperature detected by the temperature sensor 114 is not greater than the preset electrode temperature, the cold-pressed liquid flow control valve S3 can adjust its opening value to the second preset opening value to adjust the flow rate of the cooling liquid transmitted from the cooling liquid transmission pipeline 113 to the cooling roller 108. The first preset opening value is greater than the second preset opening value.

[0273] In another possible implementation, the cooling liquid flow control valve S3 can be specifically used to determine the temperature difference between the preset electrode temperature and the electrode temperature detected by the temperature sensor; based on the preset flow proportional coefficient, preset flow integral coefficient, preset flow differential coefficient and temperature difference, the target adjustment opening value of the cooling liquid flow control valve S3 is determined; the opening value of the cooling liquid flow control valve S3 is adjusted to the target adjustment opening value to adjust the flow rate of the cooling liquid transmitted from the cooling liquid transmission pipeline 113 to the cooling roller 108.

[0274] For example, the cooling liquid flow control valve S3 can determine the target adjustment parameters based on the preset flow proportional coefficient, preset flow integral coefficient, preset flow differential coefficient and temperature difference using the following formula (6).

[0275] Mv”=(Kp3*Ek3+Kp3(1 / Ti3∫_0^tEk3dt)+Kp3*Td3*dEk3 / dt) formula (6)

[0276] Where Mv represents the target adjustment parameter; Ek3 represents the temperature difference between the preset electrode temperature and the electrode temperature detected by the temperature sensor; Kp3 represents the preset flow rate proportional coefficient; Ti3 represents the preset flow rate integral coefficient; and Td3 represents the preset flow rate differential coefficient.

[0277] For example, the value range of Kp3 can be 0.001-100.00, the value range of Ti3 can be 5s-60s, and the value range of Td3 can be 5s-60s.

[0278] For example, the weight range of “Mv” can be -30 to +30.

[0279] It should be noted that the weight range of any coefficient and / or the weight range of "Mv" involved in the embodiments of this application are all exemplary examples. In actual applications, the corresponding settings can be made according to the specific circumstances.

[0280] Of course, the cooling liquid flow control valve S3 can also determine the target adjustment parameters based on the preset flow proportional coefficient, preset flow integral coefficient, preset flow differential coefficient and temperature difference through other variations or equivalent formulas of the above formula (6).

[0281] Further, the cooling liquid flow control valve S3 can determine the target adjustment opening degree value according to the target adjustment parameter and the current opening degree value before adjustment of the cooling liquid flow control valve S3.

[0282] For example, the cooling liquid flow control valve S3 can determine the target adjustment opening degree value according to the target adjustment parameter and the current opening degree value before adjustment of the cooling liquid flow control valve S3 by the following formula (7).

[0283] S1 = (Mv” / 100 + 1) + S0 Formula (7)

[0284] Wherein, S1 represents the target adjustment opening degree value; and S0 represents the current opening degree value.

[0285] Of course, the cooling liquid flow control valve S3 can also determine the target adjustment opening degree value according to the target adjustment parameter and the current opening degree value before adjustment of the cooling liquid flow control valve S3 by other transformations or equivalent formulas of the above formula (7).

[0286] It should be noted that the cooling liquid flow control valve S3 can also determine the target adjustment opening degree value according to the preset flow proportionality coefficient, the preset flow integral coefficient, the preset flow differential coefficient and the temperature difference by other ways. For example, the target adjustment opening degree value can be determined by querying a preset multi-dimensional correlation table according to the preset flow proportionality coefficient, the preset flow integral coefficient, the preset flow differential coefficient and the temperature difference; wherein, the preset multi-dimensional correlation table can be used to indicate the corresponding relationship between different preset flow proportionality coefficients, preset flow integral coefficients, preset flow differential coefficients, temperature differences and corresponding adjustment opening degree values.

[0287] Further, the cooling liquid flow control valve S3 can adjust the opening degree value of the cooling liquid flow control valve S3 to the target adjustment opening degree value to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline 113 to the cooling roller 108.

[0288] It should be noted that the cooling liquid flow control valve S3 can also directly obtain the target adjustment opening degree value from the controller or other control devices to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline 113 to the cooling roller 108 according to the target adjustment opening degree value. Wherein, the target adjustment opening degree value can be an opening degree value determined by the controller or other control devices according to the preset flow proportionality coefficient, the preset flow integral coefficient, the preset flow differential coefficient and the temperature difference.

[0289] It can be seen that, in the embodiment of the present application, the target adjustment opening degree value of the cooling liquid flow control valve is determined according to the temperature difference between the preset pole piece temperature and the pole piece temperature detected by the temperature sensor, according to the preset flow rate proportional coefficient, the preset flow rate integral coefficient and the preset flow rate differential coefficient, and the opening degree value of the cooling liquid flow control valve is adjusted to the target adjustment opening degree value, which can improve the accuracy of adjusting the flow rate of the cooling liquid transmitted by the cooling liquid transmission pipeline to the cooling roller, and is beneficial to accurately and flexibly control the cooling effect of the cooling roller on the pole piece.

[0290] In some embodiments, the cooling liquid flow control valve S3 can adjust the opening degree value of the cooling liquid flow control valve S3 according to the transmission speed of the pole piece, so as to adjust the flow rate of the cooling liquid transmitted by the cooling liquid transmission pipeline 113 to the cooling roller 108.

[0291] It should be noted that the manner in which the cooling liquid flow control valve S3 adjusts the opening degree value of the cooling liquid flow control valve S3 according to the transmission speed of the pole piece can refer to the related content of the above-mentioned embodiment of "the cooling liquid flow control valve S3 adjusts the opening degree value of the cooling liquid flow control valve S3 according to the pole piece temperature detected by the temperature sensor 114", which will not be repeated here.

[0292] In some embodiments, the cooling liquid flow control valve S3 can adjust the opening degree value of the cooling liquid flow control valve S3 according to the pole piece temperature detected by the temperature sensor 114 and the transmission speed of the pole piece, so as to adjust the flow rate of the cooling liquid transmitted by the cooling liquid transmission pipeline 113 to the cooling roller 108.

[0293] In a possible implementation manner, the cooling liquid flow control valve S3 can determine a first candidate adjustment parameter of the cooling liquid flow control valve S3 according to the transmission speed of the pole piece, and determine a second candidate adjustment parameter of the cooling liquid flow control valve S3 according to the pole piece temperature detected by the temperature sensor 114. It should be noted that the manner in which the cooling liquid flow control valve S3 determines the first candidate adjustment parameter of the cooling liquid flow control valve S3 according to the transmission speed of the pole piece can refer to the related content of the above-mentioned embodiment of "the cooling liquid flow control valve S3 adjusts the opening degree value of the cooling liquid flow control valve S3 according to the transmission speed of the pole piece", and the manner in which the cooling liquid flow control valve S3 determines the second candidate adjustment parameter of the cooling liquid flow control valve S3 according to the pole piece temperature detected by the temperature sensor 114 can refer to the related content of the above-mentioned embodiment of "the cooling liquid flow control valve S3 determines the target adjustment parameter according to the pole piece temperature detected by the temperature sensor 114", which will not be repeated here.

[0294] Further, the cooling liquid flow control valve S3 can determine a comprehensive adjustment parameter according to the first candidate adjustment parameter and the second candidate adjustment parameter, and determine a comprehensive adjustment opening value according to the comprehensive adjustment parameter and the current opening value of the cooling liquid flow control valve S3 before adjustment.

[0295] For example, the cooling liquid flow control valve S3 can determine the comprehensive adjustment parameter according to the first candidate adjustment parameter and the second candidate adjustment parameter through the following formula (8).

[0296] Mvt = a * Mvc1 + b * Mvc2 Formula (8)

[0297] Wherein, Mvt represents the comprehensive adjustment parameter; a represents the first preset weight, which can be 0-1; Mvc1 represents the first candidate adjustment parameter; b represents the second preset weight, which can be 0-1; Mvc2 represents the second candidate adjustment parameter; wherein, b is greater than a.

[0298] Of course, the cooling liquid flow control valve S3 can also determine the comprehensive adjustment parameter according to the first candidate adjustment parameter and the second candidate adjustment parameter through other transformations or equivalent formulas of the above formula (8).

[0299] It should be noted that the way the cooling liquid flow control valve S3 determines the comprehensive adjustment opening value according to the comprehensive adjustment parameter and the current opening value of the cooling liquid flow control valve S3 before adjustment can refer to the related content of the above embodiment "the cooling liquid flow control valve S3 can determine the target adjustment opening value according to the target adjustment parameter and the current opening value of the cooling liquid flow control valve S3 before adjustment", which will not be repeated here.

[0300] Further, the cooling liquid flow control valve S3 can adjust the opening value of the cooling liquid flow control valve S3 to the comprehensive adjustment opening value to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline 113 to the cooling roller 108.

[0301] It should be noted that the cooling liquid flow control valve S3 can also directly obtain the comprehensive adjustment opening value from the controller or other control devices to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline 113 to the cooling roller 108 according to the comprehensive adjustment opening value.

[0302] It can be seen that, in the embodiment of the present application, by adjusting the opening value of the cooling liquid flow control valve according to the temperature of the pole piece detected by the temperature sensor and / or the transmission speed of the pole piece, and adjusting the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline to the cooling roller, the opening value of the cooling liquid flow control valve can be adjusted by comprehensively considering the temperature of the pole piece and / or the transmission speed, which can improve the accuracy of adjusting the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline to the cooling roller, thereby facilitating the cooling roller to effectively cool the pole piece to the required pole piece temperature to meet the requirements of the pole piece preparation process.

[0303] In some embodiments, FIG. 12 is a structural schematic diagram of a pole piece flame heating system provided by another embodiment of the present application. As shown in FIG. 12, considering that the pole piece flame heating system is provided with a combustible gas transmission pipeline 102, the pole piece flame heating system in the embodiment of the present application can further include a fan 115. For example, the fan 115 is connected with a containing space for containing the igniter 103, and can be used to discharge the gas in the containing space to the outside of the containing space. Among them, in order to increase the airtightness, the containing space for containing the igniter 103 can include but is not limited to an outer airtight containing space and / or an inner airtight containing space for containing the igniter 103, and the inner airtight containing space is arranged inside the outer airtight containing space.

[0304] It should be understood that the fan 115 in the embodiment of the present application can be collectively referred to, which can refer to one or more fans. In the case where the pole piece flame heating system includes a plurality of fans, a first part of the fans can be connected with the inner airtight containing space for containing the igniter 103, so as to facilitate the discharge of the combustible gas and the like which is not fully combusted in the inner airtight containing space to the outside of the pole piece flame heating system; a second part of the fans can be connected with the outer airtight containing space for containing the igniter 103, so as to facilitate the discharge of the combustible gas and the like which is not fully combusted in the outer airtight containing space to the outside of the pole piece flame heating system; of course, other parts of the fans can also be arranged at other positions. For example, a third part of the fans can be connected with a pipeline connecting airtight containing space between the mixing device 106 and the igniter 103, so as to facilitate the discharge of the combustible gas and the like in the pipeline connecting airtight containing space to the outside of the pole piece flame heating system.

[0305] The fan 115 in the embodiment of the present application can also be used to adjust the operation mode of the fan 115 according to the flame ignition result of the igniter 103 and / or the operation state of the pole piece transmission roller.

[0306] The operation state of the pole piece transmission roller in the embodiment of the present application can include but is not limited to at least one of the following: the pole piece transmission roller is powered on, starts to operate, stops to operate due to alarm, and stops to operate normally.

[0307] The operation mode of the fan 115 in the embodiments of the present application can include operation modes of different wind force levels, for example, an operation mode of a normal wind force level or an operation mode of a strong wind force level, and the like.

[0308] In some embodiments, in the embodiments of the present application, the fan 115 can adjust the operation mode of the fan 115 to an operation mode of a target wind force level corresponding to a preset triggering condition in a case where it is determined according to the flame ignition result of the igniter 103 and / or the operation state of the pole piece driving roller that the preset wind force triggering condition is met. The preset wind force triggering condition can include, but is not limited to, a preset normal wind force triggering condition or a preset strong wind force triggering condition.

[0309] In a possible implementation, the fan 115 adjusts the operation mode of the fan 115 to an operation mode of a normal wind force level in a case where it is determined according to the flame ignition result of the igniter 103 and / or the operation state of the pole piece driving roller that the preset normal wind force triggering condition is met. For example, the preset normal wind force triggering condition can include, but is not limited to, at least one of the following: the flame ignition result indicates that the flame ignition is successful, the pole piece driving roller is powered on, the pole piece driving roller is started to operate, the igniter is turned off and the pole piece driving roller is stopped to operate.

[0310] In another possible implementation, the fan 115 adjusts the operation mode of the fan 115 to an operation mode of a strong wind force level in a case where it is determined according to the flame ignition result of the igniter 103 and / or the operation state of the pole piece driving roller that the preset strong wind force triggering condition is met. For example, the preset strong wind force triggering condition can include, but is not limited to, at least one of the following: the flame ignition result indicates that the flame ignition fails, the pole piece driving roller is stopped to operate with an alarm, the igniter is turned off and the pole piece driving roller is not stopped to operate.

[0311] It should be noted that the fan 115 can also directly obtain the operation mode of the target wind force level from the controller or other control device to adjust the operation mode of the fan 115 to the operation mode of the target wind force level corresponding to the preset triggering condition. The operation mode of the target wind force level can be determined by the controller or other control device according to the flame ignition result of the igniter 103 and / or the operation state of the pole piece driving roller.

[0312] It can be seen that, in the embodiments of the present application, the pole piece flame heating system can further include a fan, and the operation mode of the fan is adjusted according to the flame ignition result of the igniter and / or the operation state of the pole piece driving roller, thereby realizing linkage of the igniter, the pole piece driving roller and the fan, and effectively utilizing the fan to discharge the combustible gas leaked in the pole piece flame heating system to the outside of the pole piece flame heating system, thereby facilitating improvement of the operation stability of the pole piece flame heating system.

[0313] In some embodiments, as shown in FIG. 12, the pole piece flame heating system in the embodiments of the present application can further include a combustible gas concentration sensor 116 arranged in a preset accommodation space in the pole piece flame heating system. The preset accommodation space can include, but is not limited to, at least one of the following: a transmission pipeline closed accommodation space for accommodating the gas transmission pipeline and the mixing device 106, a pipeline connection closed accommodation space between the mixing device 106 and the igniter 103, an inner closed accommodation space for accommodating the igniter 103, and an outer closed accommodation space.

[0314] It should be understood that the combustible gas concentration sensor 116 in the embodiments of the present application can be collectively referred to as one or more combustible gas concentration sensors. A plurality of combustible gas concentration sensors 116 can be arranged at different positions of the preset accommodation space in the pole piece flame heating system. For example, in the case where the pole piece flame heating system includes a plurality of combustible gas concentration sensors 116, a first portion of the combustible gas concentration sensors can be arranged in the transmission pipeline closed accommodation space for accommodating the gas transmission pipeline and the mixing device, so as to detect the combustible gas concentration value of the transmission pipeline closed accommodation space; a second portion of the combustible gas concentration sensors 116 can be arranged in the pipeline connection closed accommodation space between the mixing device 106 and the igniter 103, so as to detect the combustible gas concentration value of the pipeline connection closed accommodation space; a third portion of the combustible gas concentration sensors 116 can be arranged in the inner closed accommodation space for accommodating the igniter 103, so as to detect the combustible gas concentration value of the inner closed accommodation space; and of course, other portions of the combustible gas concentration sensors 116 can also be arranged at other positions in the pole piece flame heating system. For example, a fourth portion of the combustible gas concentration sensors 116 can be arranged in the outer closed accommodation space for accommodating the igniter 103, so as to detect the combustible gas concentration value of the outer closed accommodation space.

[0315] The fan 115 in the embodiments of the present application can also be used to adjust the operation mode of the fan according to the flame ignition result of the igniter, the operation state of the pole piece driving roller, and / or the combustible gas concentration value detected by the combustible gas concentration sensor.

[0316] In some embodiments, the fan 115 can adjust the operation mode of the fan 115 to the operation mode of the target wind power gear corresponding to the preset trigger condition when it is determined that the preset wind power trigger condition is met according to the flame ignition result of the igniter, the operation state of the pole piece driving roller, and / or the combustible gas concentration value detected by the combustible gas concentration sensor. The preset wind power trigger condition can include, but is not limited to, a preset normal wind power trigger condition or a preset strong wind power trigger condition.

[0317] On the basis of the above-mentioned embodiments, the preset normal wind force triggering condition in the embodiments of the present application can include, but is not limited to, at least one of the following: the flame ignition result is used to indicate that the flame ignition is successful, the pole piece transmission roller is powered on, the pole piece transmission roller is started to run, the igniter is turned off and the pole piece transmission roller is stopped to run, and the combustible gas concentration value detected by the combustible gas concentration sensor is lower than a preset concentration value threshold. Wherein, the igniter being turned off can mean that the flame of the igniter is switched from the burning state to the extinguishing state.

[0318] On the basis of the above-mentioned embodiments, the preset strong wind force triggering condition in the embodiments of the present application can include, but is not limited to, at least one of the following: the flame ignition result is used to indicate that the flame ignition fails, the pole piece transmission roller is alarm stopped to run, the igniter is turned off and the pole piece transmission roller is not stopped to run, and the combustible gas concentration value detected by the combustible gas concentration sensor is not lower than a preset concentration value threshold.

[0319] It can be seen that, in the embodiments of the present application, the pole piece flame heating system can further include a combustible gas concentration sensor, and by adjusting the operation mode of the fan according to the flame ignition result of the igniter, the running state of the pole piece transmission roller and / or the combustible gas concentration value detected by the combustible gas concentration sensor, the linkage of the igniter, the pole piece transmission roller, the combustible gas concentration sensor and the fan is realized, and the combustible gas leaked in the pole piece flame heating system can be effectively discharged to the outside of the pole piece flame heating system by the fan, thereby facilitating to further improve the operation stability of the pole piece flame heating system.

[0320] In some embodiments, the embodiments of the present application exemplarily introduce the related content of the start condition of the above-mentioned gas transmission pipeline to the igniter 103.

[0321] In the embodiments of the present application, the combustible gas transmission pipeline 102 can be specifically used to transmit the first preset flow of combustible gas to the igniter 103 when the pole piece flame heating system meets the preset start condition.

[0322] In the embodiments of the present application, the combustion-supporting gas transmission pipeline 105 can be specifically used to transmit the second preset flow of combustion-supporting gas to the igniter 103 when the pole piece flame heating system meets the preset start condition.

[0323] The preset start condition in the embodiments of the present application can include at least one of the following: the first pole piece thickness before pole piece heating meets the preset thickness requirement, the transmission speed of the pole piece transmission roller meets the preset transmission speed requirement, and the transmission direction of the pole piece transmission roller meets the preset transmission direction requirement. Of course, the preset start condition can also include other start conditions, such as the loop detection result in the pole piece flame heating system meeting the preset detection requirement, etc.

[0324] Exemplarily, the loop detection result can include but is not limited to at least one of the following: a communication signal detection result, a pressure difference detection result of the combustion-supporting gas transmission pipeline, a combustible gas concentration value detection result, a pressure difference detection result of the combustible gas transmission pipeline, a flow detection result of the combustible gas transmission pipeline, a cooling liquid flow detection result, and a fan alarm detection result.

[0325] Exemplarily, the preset detection requirement can include but is not limited to at least one of the following: the communication signal detection result indicates that the communication signal is normal, the pressure difference detection result of the combustion-supporting gas transmission pipeline indicates that the pressure difference meets a preset pressure difference range, the combustible gas concentration value detection result indicates that the combustible gas concentration value is less than a preset concentration value threshold, the flow detection result of the combustible gas transmission pipeline indicates that the flow of the combustible gas transmission pipeline is less than a preset flow threshold (for example, zero), the cooling liquid flow detection result indicates that the cooling liquid flow meets a preset flow range, and the fan alarm detection result indicates that there is no alarm information.

[0326] Exemplarily, the communication signal detection result can include but is not limited to at least one of the following: a communication signal detection result of a temperature sensor, a communication signal detection result of an anemometer, and a communication signal detection result between multiple controllers in a case where the pole piece flame heating system includes multiple controllers.

[0327] It can be seen that, in the embodiment of the present application, in the case where the combustible gas transmission pipeline of the pole piece flame heating system meets the preset starting condition, the first preset flow of combustible gas is transmitted to the igniter, and in the case where the combustion-supporting gas transmission pipeline of the pole piece flame heating system meets the preset starting condition, the second preset flow of combustion-supporting gas is transmitted to the igniter, which can be beneficial to improve the operation reliability of the pole piece flame heating system.

[0328] In some embodiments, the combustion-supporting gas transmission pipeline 105 in the embodiment of the present application can also be used to transmit the first preset duration of combustion-supporting gas to the igniter 103 before transmitting the second preset flow of combustion-supporting gas to the igniter 103; wherein the first preset duration can refer to the duration required for the gas transmission pipeline of the pole piece flame heating system to be filled with combustion-supporting gas, so as to blow the gas transmission pipeline to discharge the combustible gas remaining in the pole piece flame heating system.

[0329] The combustible gas transmission pipeline 102 in the embodiment of the present application can be specifically used to transmit the first preset flow of combustible gas to the igniter 103 after the combustion-supporting gas transmission pipeline 105 transmits the first preset duration of combustion-supporting gas to the igniter 103.

[0330] Of course, the combustion-supporting gas transmission pipeline 105 will transmit the second preset flow of combustion-supporting gas to the igniter 103 after transmitting the first preset duration of combustion-supporting gas to the igniter 103.

[0331] It can be seen that, in the embodiment of the present application, before the combustible gas transmission pipeline transmits the first preset flow of combustible gas to the igniter and the combustion-supporting gas transmission pipeline transmits the second preset flow of combustion-supporting gas to the igniter, the combustion-supporting gas transmission pipeline is used to transmit the first preset time length of combustion-supporting gas to the igniter in advance, so that the combustible gas remaining in the pole piece flame heating system can be discharged, and the flow of combustible gas transmitted by the combustible gas transmission pipeline to the igniter can be more accurately controlled, thereby facilitating the improvement of the flame ignition success rate of the igniter to the target mixed gas.

[0332] In some embodiments, the combustible gas transmission pipeline 102 in the embodiment of the present application can also be used to stop transmitting combustible gas to the igniter 103 when the pole piece driving roller stops running, so that the igniter 103 cannot ignite a flame.

[0333] The combustion-supporting gas transmission pipeline 105 in the embodiment of the present application can also be used to continue transmitting combustion-supporting gas to the igniter 103 when the pole piece driving roller stops running, and stop transmitting combustion-supporting gas to the igniter 103 after the second preset time length; wherein the second preset time length can refer to the time length required for the gas transmission pipeline of the pole piece flame heating system to be filled with combustion-supporting gas, so that the combustible gas remaining in the pole piece flame heating system can be discharged, thereby facilitating the improvement of the operation reliability of the pole piece flame heating system.

[0334] In some embodiments, FIG. 13 is a structural schematic diagram of a pole piece flame heating system provided by another embodiment of the present application, as shown in FIG. 13, the pole piece flame heating system in the embodiment of the present application can also include a controller 117 connected with the igniter 103. For example, the controller 117 can include but is not limited to a programmable logic controller (PLC).

[0335] The controller 117 in the embodiment of the present application can be used to send an ignition instruction to the igniter 103, so that the igniter 103 generates an electric spark to ignite the target mixed gas output by the gas output port to form a flame.

[0336] It should be noted that the controller 117 in the embodiment of the present application can also be connected with the combustible gas transmission pipeline 102 and the combustion-supporting gas transmission pipeline 105, so that the combustible gas transmission pipeline 102 can be controlled to transmit the first preset flow of combustible gas to the igniter 103, and the combustion-supporting gas transmission pipeline 105 can be controlled to transmit the second preset flow of combustion-supporting gas to the igniter 103.

[0337] Of course, the controller 117 of the embodiments of the present application can also be connected with other devices (for example, a flow control valve, a gas pressure sensor, a driving assembly, a thickness gauge, a fan, a concentration sensor, etc.) in the pole piece flame heating system, so as to obtain information from other devices and / or control the operation of other devices, etc.

[0338] In some embodiments, the controller 117 can also be configured to output alarm information when it is detected that the pole piece flame heating system meets a preset alarm condition, so that the maintenance personnel can timely maintain the pole piece flame heating system.

[0339] For example, the preset alarm condition can include at least one of the following: the flame ignition result fed back by any ignition sensor indicates that the flame ignition is switched from success to failure; the flame ignition result fed back by the corresponding ignition sensor indicates that the flame ignition is successful when the combustible gas flow control valve is in the closed state; the flame ignition result fed back by the corresponding ignition sensor indicates that the flame ignition fails after the target mixed gas output by the igniter at the continuous ignition gas output port exceeds the third preset time length; the flow difference between the first preset flow of the combustible gas transmission pipeline and the actual combustible gas flow detected by the combustible gas flow sensor is greater than the preset flow threshold; the pressure value detected by the combustible gas pressure sensor exceeds the preset pressure threshold range.

[0340] In some embodiments, FIG. 14 is a schematic diagram of the pole piece driving direction in the pole piece flame heating system provided by some embodiments of the present application. As shown in FIG. 14, the pole piece flame heating system in the embodiments of the present application can include a plurality of pole piece driving rollers 107, a cooling roller 108, a first thickness gauge 111, a second thickness gauge 112, a temperature sensor 114, a first igniter 103A, a second igniter 103B, and a temperature sensor 114.

[0341] The plurality of pole piece driving rollers 107 in the embodiments of the present application can be used to drive the pole piece to move in a first direction D1, so as to convey the pole piece from the previous preparation process to the next preparation process.

[0342] The first thickness gauge 111 in the embodiments of the present application can be used to detect the first pole piece thickness before the flame of the igniter heats the pole piece, and the second thickness gauge 112 can be used to detect the second pole piece thickness after the flame of the igniter heats the pole piece.

[0343] The cooling roller 108 in the embodiments of the present application can be used to drive the pole piece to move in a second direction D2, so as to move to the heating area of the igniter, wherein the second direction D2 is perpendicular to the first direction D1.

[0344] The cooling roll 108 in the embodiments of the present application can be connected with the cooling liquid transmission pipeline 113 so that the cooling liquid can be obtained. The cooling liquid flow control valve S3 can be arranged on the cooling liquid transmission pipeline 113 so that the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline 113 to the cooling roll 108 can be adjusted.

[0345] For example, each igniter is connected with the corresponding driving assembly 110 so that the distance between the igniter and the pole piece can be adjusted. In addition, each igniter is connected with the corresponding gas transmission pipe, and the combustible gas flow control valve S1 can be arranged on the combustible gas transmission pipeline in the gas transmission pipeline so that the flow of the combustible gas transmitted by the combustible gas transmission pipeline to the igniter can be controlled.

[0346] In some embodiments, on the basis of the above-mentioned embodiments, in order to further introduce and describe the pole piece flame heating system, the pole piece flame heating system in the embodiments of the present application includes the controller 117, two combustible gas transmission pipelines 102, two combustion-supporting gas transmission pipelines 105, the mixing device 106 including two mixing chambers 106B, and the igniter 103 including two igniters 103, for example, the overall function structure of the pole piece flame heating system is exemplarily introduced and described. FIG. 15 is a structural schematic diagram of a pole piece flame heating system provided by some other embodiments of the present application. As shown in FIG. 15, the pole piece flame heating system in the embodiments of the present application can include: a gas source part P1, a transmission pipeline part P2, a pipeline connection part P3, an ignition part P4, an exhaust part P5, and a cooling part P6.

[0347] The gas source part P1 can include the combustible gas source 101 and the combustion-supporting gas source 104. Of course, the gas source part P1 can also include other assemblies, for example, the total combustible gas flow control valve Sm and the ball valve Vb1 arranged between the combustible gas source 101 and each combustible gas transmission pipeline 102, and the ball valve Vb2 arranged between the combustion-supporting gas source 104 and each combustion-supporting gas transmission pipeline 105.

[0348] The transmission pipeline part P2 can include two combustible gas transmission pipelines 102, two combustion-supporting gas transmission pipelines 105 and two mixing chambers 106B arranged in the transmission pipeline sealed accommodation space. Each mixing chamber 106B is connected with the corresponding combustible gas transmission pipeline 102 and combustion-supporting gas transmission pipeline 105. A combustible gas flow control valve S1 and a combustible gas pressure sensor P1 can be arranged on each combustible gas transmission pipeline 102. A combustion-supporting gas flow control valve S2 and a combustion-supporting gas pressure sensor P2 can be arranged on each combustion-supporting gas transmission pipeline 105. Of course, the transmission pipeline part P2 can also include other components, such as a combustible gas flow meter F1 and a ball valve Vb3 arranged on the combustible gas transmission pipeline 102, a first check valve Vr1 and a filter F arranged between the ball valve Vb1 and each combustible gas transmission pipeline 102, a combustion-supporting gas flow meter F2 and a ball valve Vb4 arranged on the combustion-supporting gas transmission pipeline 105, a pressure reducing valve Vpr arranged between the ball valve Vb2 and each combustion-supporting gas transmission pipeline 105, and a combustible gas concentration sensor 116 arranged in the transmission pipeline sealed accommodation space.

[0349] The pipeline connection part P3 can include two joint flanges Fc and a combustible gas concentration sensor 116 arranged in the pipeline connection sealed accommodation space.

[0350] The ignition part P4 can include two igniters 103 arranged in the inner sealed accommodation space accommodating the igniters, an ignition sensor 109 and a driving assembly 110 arranged corresponding to each igniter 103, and a combustible gas concentration sensor 116. The ignition part P4 can also include a combustible gas concentration sensor 116, a plurality of temperature sensors 114 and an anemometer 118 arranged in the outer sealed accommodation space accommodating the igniters. It should be understood that the temperature sensors 114 arranged in the outer sealed accommodation space can be used to detect the temperature in the outer sealed accommodation space. Of course, the ignition part P4 can also include other components.

[0351] The exhaust part P5 can include a fan 115 and an anemometer 118. The fan 115 can be connected with the pipeline connection sealed accommodation space, the outer sealed accommodation space accommodating the igniters and the inner sealed accommodation space accommodating the igniters through a plurality of exhaust pipelines, respectively. An exhaust control valve Ve can be arranged on each exhaust pipeline to adjust the on-off state of the exhaust pipeline.

[0352] The cooling part P6 can include a cooling liquid source 119, a cooling liquid transmission pipeline 113, a cooling roller 108 and a cooling liquid discharge pipeline 120. Of course, the cooling part P6 can also include other components, such as a cold pressure liquid flow control valve S3, a cold pressure liquid pressure sensor P3 and a cold pressure liquid flow meter F3 arranged on the cooling liquid transmission pipeline 113.

[0353] In addition, in order to detect the pole piece temperature of the pole piece, the pole piece flame heating system in the embodiment of the application can further comprise a plurality of temperature sensors 114 to detect the pole piece temperature after the cooling roller 108 cools the pole piece.

[0354] For example, the controller 117 in the embodiment of the application can comprise but is not limited to a first PLC 117A and a second PLC 117B, which can communicate with each other, wherein any one of the first PLC 117A and the second PLC 117B can be a master controller, and the other PLC can be a slave controller.

[0355] In addition, the plurality of entrances of the sealed accommodation spaces accommodating the igniters can be respectively provided with corresponding proximity switches K (or proximity sensors) to accurately indicate the opening and closing state of the entrances. For example, if any entrance is in an open state, the corresponding proximity switch K is in an open state; if any entrance is in a closed state, the corresponding proximity switch K is in a closed state.

[0356] In the embodiment of the application, the controller 117 adjusts the combustible gas flow control valve S1 on the combustible gas transmission pipeline 102 and the combustion-supporting gas flow control valve S2 on the combustion-supporting gas transmission pipeline 105 to control the proportion of the combustible gas flow transmitted by the combustible gas transmission pipeline 102 to the corresponding mixing bin 106B and the combustion-supporting gas flow transmitted by the combustion-supporting gas transmission pipeline 105 to the corresponding mixing bin 106B, so that the mixed gas of the combustible gas and the combustion-supporting gas can be more easily ignited by flame under the premise of stable operation of the pole piece flame heating system.

[0357] Further, the controller 117 can adjust the flow of the combustible gas transmitted by the combustible gas transmission pipeline 102 to the igniter 103 according to the thickness difference between the first pole piece thickness detected by the first thickness gauge (not shown in FIG. 15) and the second pole piece thickness detected by the second thickness gauge (not shown in FIG. 15), or adjust the flow of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline 105 to the igniter 103 according to the thickness difference between the first pole piece thickness and the second pole piece thickness, so as to timely adjust the proportion of the combustible gas flow and the combustion-supporting gas flow in the target mixed gas transmitted to the corresponding igniter 103 according to the thickness difference between the first pole piece thickness and the second pole piece thickness, so as to adjust the flame size and make the flame temperature different, thereby not only protecting the pole piece, but also improving the utilization rate of the combustible gas and the combustion-supporting gas.

[0358] Further, the controller 117 can also control the driving assemblies 110 to drive the corresponding igniters 103 to move according to the transmission speed of the pole piece, so as to adjust the distance between the igniters 103 and the pole piece, which is not only conducive to further improving the heating efficiency of the pole piece, but also conducive to protecting the pole piece, so that the temperature of the pole piece meets the preparation process requirements of the pole piece.

[0359] Further, the controller 117 can also adjust the opening value of the cooling liquid flow control valve S3 according to the pole piece temperature detected by the temperature sensor after the cooling of the pole piece and / or the transmission speed of the pole piece, so as to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline 113 to the cooling roller 108, which is not only conducive to accurately cooling the pole piece to meet the preparation process requirements of the pole piece, but also conducive to saving the cooling liquid.

[0360] Further, the controller 117 can also adjust the operation mode of the fan 115 according to the flame ignition result of the igniter 103, the operation state of the pole piece transmission roller and / or the combustible gas leakage value detected by the combustible gas concentration sensor 116, which realizes the linkage of the igniter, the pole piece transmission roller, the combustible gas concentration sensor and the fan, can effectively use the fan to exhaust the leaked combustible gas in the pole piece flame heating system to the outside of the pole piece flame heating system, thereby being conducive to further improving the operation stability of the pole piece flame heating system.

[0361] In some embodiments, in combination with the overall structure of the pole piece flame heating system, the overall process of the pole piece flame heating is exemplarily introduced and described, and FIG. 16 is a process schematic diagram of the pole piece flame heating provided by some embodiments of the present application. As shown in FIG. 16, the pole piece flame heating process of the embodiments of the present application can include the following steps:

[0362] Step S1601, the controller detects that the pole piece transmission roller is powered on.

[0363] Step S1602, the controller performs loop detection of the pole piece flame heating system, and adjusts the operation mode of the fan to the normal wind power gear operation mode.

[0364] Exemplarily, the loop detection in the embodiments of the present application can include but is not limited to at least one of the following: communication signal detection, differential pressure detection of the combustion-supporting gas transmission pipeline, combustible gas concentration value detection, differential pressure detection of the combustible gas transmission pipeline, flow detection of the combustible gas transmission pipeline, cooling liquid flow detection, fan alarm detection. Among them, the communication signal detection can include but is not limited to at least one of the following: temperature sensor communication signal detection, anemometer communication signal detection, communication signal detection between the first PLC and the second PLC.

[0365] Step S1603, the controller judges whether the loop detection result meets the preset detection requirement.

[0366] If the loop detection result does not meet the preset detection requirement, step S1604 is performed; if the loop detection result meets the preset detection requirement, step S1605 is performed.

[0367] It should be understood that in the case where the loop detection result does not meet the preset detection requirement, the controller can consider that the pole piece driving roller has an alarm signal and the pole piece driving roller will be alarmed to stop running.

[0368] Step S1604, the controller adjusts the operation mode of the fan to the operation mode of the strong wind power gear.

[0369] Step S1605, the controller controls the combustible gas transmission pipeline to transmit the first preset flow of combustible gas to the igniter, and the combustion-supporting gas transmission pipeline to transmit the second preset flow of combustion-supporting gas to the igniter, and controls the igniter to perform flame ignition, in the case where it is determined that the pole piece flame heating system meets the preset starting condition.

[0370] For example, if the driving direction of the pole piece driving roller meets the preset driving direction requirement, the first pole piece thickness before pole piece heating meets the preset thickness requirement, and the driving speed of the pole piece driving roller meets the preset driving speed requirement, the controller can determine that the pole piece flame heating system meets the preset starting condition.

[0371] Step S1606, the controller determines whether the flame ignition of the igniter is successful according to the flame ignition result of the igniter.

[0372] If it is determined that the flame ignition of the igniter fails, step S1607 is performed; if it is determined that the flame ignition of the igniter succeeds, step S1608 is performed.

[0373] It should be understood that in the case where it is determined that the flame ignition of the igniter fails, the controller can re-control the igniter to perform flame ignition; if the flame ignition fails three times, the controller can control the igniter to stop flame ignition and output an alarm prompt information, so that the operation and maintenance personnel can detect the equipment parts in the pole piece flame heating system according to the alarm prompt information.

[0374] Step S1607, the controller adjusts the operation mode of the fan to the operation mode of the strong wind power gear.

[0375] Step S1608, the controller adjusts the operation mode of the fan to the operation mode of the normal wind power gear after the pole piece driving roller continues to run for a fourth preset time length.

[0376] For example, the fourth preset time length can include but is not limited to 3 minutes or 5 minutes.

[0377] Step S1609, the controller adjusts the distance between the igniter and the pole piece according to the transmission speed of the pole piece.

[0378] Step S1610, the controller adjusts the gas flow of the combustible gas transmitted by the combustible gas transmission pipeline to the igniter and the gas flow of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to the igniter according to the thickness difference between the first pole piece thickness and the second pole piece thickness.

[0379] Step S1611, the controller adjusts the liquid flow of the cooling liquid transmitted by the cooling liquid transmission pipeline to the cooling roller according to the pole piece temperature detected by the temperature sensor after the cooling of the pole piece and / or the transmission speed of the pole piece.

[0380] Step S1612, the controller controls the combustible gas transmission pipeline to stop transmitting the combustible gas to the igniter so that the flame in the igniter is switched to the extinguished state when the stop instruction of the pole piece transmission roller is detected.

[0381] Step S1613, the controller adjusts the operation mode of the fan to the operation mode of the strong wind power gear when it is determined that the flame in the igniter is switched to the extinguished state according to the flame ignition result.

[0382] Step S1614, the controller adjusts the operation mode of the fan to the operation mode of the normal wind power gear after the pole piece transmission roller normally stops running for a fifth preset time length.

[0383] For example, the fifth preset time length can include but is not limited to 3 minutes or 5 minutes.

[0384] Step S1615, the controller turns off the fan after the pole piece transmission roller normally stops running for a sixth preset time length.

[0385] The sixth preset time length is greater than the fifth preset time length.

[0386] The implementation of each step in the embodiments of the present application can refer to the related content in the above-mentioned pole piece flame heating system embodiments, which will not be described here.

[0387] In some embodiments, FIG. 17 is a flowchart of a pole piece flame heating method provided by some embodiments of the present application. The pole piece flame heating system in the embodiments of the present application applies the method to the pole piece flame heating system in the above-mentioned embodiments. The related content of the pole piece flame heating system in the embodiments of the present application can refer to the related content in the above-mentioned pole piece flame heating system embodiments, which will not be described here. As shown in FIG. 17, the method in the embodiments of the present application can include the following steps:

[0388] Step S1701, a first preset flow of combustible gas is transmitted to the igniter based on the combustible gas provided by the combustible gas source.

[0389] Step S1702, transmitting the second preset flow of combustion-supporting gas to the igniter based on the combustion-supporting gas provided by the combustion-supporting gas source; wherein the ratio of the first preset flow to the second preset flow belongs to a preset mixed gas ratio range.

[0390] Step S1703, in a case where the ignition instruction is received, generating an electric spark to ignite a target mixed gas output by the gas output port of the igniter to form a flame; wherein the target mixed gas comprises a mixed gas of the combustible gas and the combustion-supporting gas; and the flame is used to heat the pole piece.

[0391] In some embodiments, FIG. 18 is a flow diagram of a pole piece flame heating method provided by another embodiment of the present application. As shown in FIG. 18, the method of the embodiment of the present application can further include the following steps:

[0392] Step S1704, mixing the first preset flow of combustible gas transmitted by the combustible gas transmission pipeline and the second preset flow of combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to obtain a target mixed gas, and outputting the target mixed gas to the igniter.

[0393] In some embodiments, the above step S1701 can include:

[0394] Adjusting the opening value of the combustible gas flow control valve on the combustible gas transmission pipeline to control the combustible gas transmission pipeline to transmit the first preset flow of combustible gas to the igniter.

[0395] In some embodiments, adjusting the opening value of the combustible gas flow control valve on the combustible gas transmission pipeline can include:

[0396] Adjusting the opening value of the combustible gas flow control valve according to the first preset flow, the pressure value detected by the combustible gas pressure sensor arranged on the combustible gas transmission pipeline, and the pipe diameter of the combustible gas transmission pipeline.

[0397] In some embodiments, the above step S1701 can further include:

[0398] Adjusting the opening value of the total combustible gas flow control valve to control the combustible gas transmission pipeline to transmit the first preset flow of combustible gas to the igniter.

[0399] In some embodiments, the above step S1702 can include:

[0400] Adjusting the opening value of the combustion-supporting gas flow control valve arranged on the combustion-supporting gas transmission pipeline to control the combustion-supporting gas transmission pipeline to transmit the second preset flow of combustion-supporting gas to the igniter.

[0401] In some embodiments, adjusting the opening value of the combustion-supporting gas flow control valve arranged on the combustion-supporting gas transmission pipeline can include:

[0402] adjusting the opening value of the combustion-supporting gas flow control valve according to the second preset flow, a pressure value detected by the combustion-supporting gas pressure sensor arranged on the combustion-supporting gas transmission pipeline, and a pipe diameter of the combustion-supporting gas transmission pipeline.

[0403] In some embodiments, the step S1704 can include:

[0404] mixing the first preset flow of combustible gas transmitted by the corresponding combustible gas transmission pipeline and the second preset flow of combustion-supporting gas transmitted by the corresponding combustion-supporting gas transmission pipeline to obtain a target mixed gas, and outputting the target mixed gas to the corresponding igniter.

[0405] In some embodiments, the step S1703 can include:

[0406] spraying the target mixed gas toward the pole piece through the gas output port;

[0407] generating an electric spark to ignite the target mixed gas output by the spray head to form a flame.

[0408] In some embodiments, the method of the embodiments of the present application can further include the following steps:

[0409] driving the igniter to move according to the transmission speed of the pole piece to adjust the distance between the igniter and the pole piece.

[0410] In some embodiments, driving the igniter to move according to the transmission speed of the pole piece to adjust the distance between the igniter and the pole piece can include:

[0411] driving the igniter to move to a preset position corresponding to the transmission speed of the pole piece according to the transmission speed of the pole piece, so as to adjust the distance between the igniter and the pole piece to a preset distance corresponding to the transmission speed.

[0412] In some embodiments, driving the igniter to move according to the transmission speed of the pole piece to adjust the distance between the igniter and the pole piece can include:

[0413] determining a speed difference value between the transmission speed of the pole piece and a preset transmission speed;

[0414] determining a position adjustment parameter of the driving assembly according to the preset position proportionality coefficient, the preset position integral coefficient, the preset position differential coefficient, and the speed difference value;

[0415] driving the igniter to move according to the position adjustment parameter to adjust the distance between the igniter and the pole piece.

[0416] In some embodiments, FIG. 19 is a flowchart of a method of flame heating of pole pieces according to some embodiments of the present application. As shown in FIG. 19, the method according to embodiments of the present application can further include the following steps:

[0417] In step S1705, the flow rate of the combustible gas delivered by the combustible gas delivery pipeline to the igniter is adjusted according to the thickness difference between the first pole piece thickness and the second pole piece thickness; or,

[0418] In step S1706, the flow rate of the combustion-supporting gas delivered by the combustion-supporting gas delivery pipeline to the igniter is adjusted according to the thickness difference between the first pole piece thickness and the second pole piece thickness.

[0419] In some embodiments, step S1705 can include:

[0420] determining the thickness difference between the first pole piece thickness value and the second pole piece thickness value at each preset detection position, respectively;

[0421] determining a target adjustment ratio according to the preset thickness proportionality coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient, and the thickness difference at each preset detection position; wherein the target adjustment ratio is the adjusted flow rate ratio of the combustible gas delivered by the combustible gas delivery pipeline to the igniter to the combustion-supporting gas delivered by the combustion-supporting gas delivery pipeline to the igniter;

[0422] adjusting the flow rate of the combustible gas delivered by the combustible gas delivery pipeline to the igniter according to the target adjustment ratio.

[0423] In some embodiments, determining the target adjustment ratio according to the preset thickness proportionality coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient, and the thickness difference at each preset detection position can include:

[0424] for each preset detection position, determining a sub-target adjustment ratio corresponding to the preset detection position according to the preset thickness proportionality coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient, and the thickness difference at the preset detection position;

[0425] determining the target adjustment ratio according to the sub-target adjustment ratios corresponding to each preset detection position.

[0426] In some embodiments, step S1706 can include:

[0427] determining the thickness difference between the first pole piece thickness value and the second pole piece thickness value at each preset detection position, respectively;

[0428] Determine a target adjustment ratio according to the preset thickness proportionality coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient, and the thickness difference of each preset detection position, wherein the target adjustment ratio is an adjusted flow ratio of combustible gas transmitted by the combustible gas transmission pipeline to the igniter to combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to the igniter.

[0429] Adjust the flow of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to the igniter according to the target adjustment ratio.

[0430] In some embodiments, FIG. 20 is a flowchart of a pole piece flame heating method provided by another embodiment of the present application. As shown in FIG. 20, the method of the embodiment of the present application can further include the following steps:

[0431] Step S1707: Adjust the opening value of the cooling liquid flow control valve according to the pole piece temperature detected by the temperature sensor and / or the transmission speed of the pole piece, so as to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline to the cooling roller.

[0432] In some embodiments, the above step S1707 can include:

[0433] Determine a temperature difference between the preset pole piece temperature and the pole piece temperature detected by the temperature sensor;

[0434] Determine a target adjustment opening value of the cooling liquid flow control valve according to the preset flow proportionality coefficient, the preset flow integral coefficient, the preset flow differential coefficient, and the temperature difference;

[0435] Adjust the opening value of the cooling liquid flow control valve to the target adjustment opening value, so as to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline to the cooling roller.

[0436] In some embodiments, the method of the embodiment of the present application can further include the following steps:

[0437] Adjust the operation mode of the fan according to the flame ignition result of the igniter and / or the operation state of the pole piece transmission roller, wherein the operation mode of the fan includes operation modes of different wind power gears.

[0438] In some embodiments, the method of the embodiment of the present application can further include the following steps:

[0439] Adjust the operation mode of the fan according to the flame ignition result of the igniter, the operation state of the pole piece transmission roller, and / or the combustible gas concentration value detected by the combustible gas concentration sensor.

[0440] In some embodiments, the above step S1701 can include:

[0441] transmitting, to the igniter, a first preset flow of combustible gas when the pole piece flame heating system meets a preset starting condition;

[0442] Correspondingly, the step S1702 can include:

[0443] transmitting, to the igniter, a second preset flow of combustion-supporting gas when the pole piece flame heating system meets a preset starting condition;

[0444] The preset starting condition includes at least one of the following: the first pole piece thickness before pole piece heating meets a preset thickness requirement, the transmission speed of the pole piece transmission roller meets a preset transmission speed requirement, and the transmission direction of the pole piece transmission roller meets a preset transmission direction requirement.

[0445] In some embodiments, the method of the present application can further include the following steps:

[0446] transmitting, to the igniter, a first preset duration of combustion-supporting gas before transmitting, to the igniter, the second preset flow of combustion-supporting gas; wherein the first preset duration refers to the duration required for the gas transmission pipeline of the pole piece flame heating system to be filled with combustion-supporting gas;

[0447] Correspondingly, the step S1701 can include:

[0448] transmitting, to the igniter, a first preset flow of combustible gas after transmitting, to the igniter, the first preset duration of combustion-supporting gas.

[0449] In some embodiments, the method of the present application can further include the following steps:

[0450] stopping transmitting, to the igniter, combustible gas when the pole piece transmission roller stops running;

[0451] continuing to transmit, to the igniter, combustion-supporting gas when the pole piece transmission roller stops running, and stopping transmitting, to the igniter, combustion-supporting gas after a second preset duration; wherein the second preset duration refers to the duration required for the gas transmission pipeline of the pole piece flame heating system to be filled with combustion-supporting gas.

[0452] In some embodiments, the method of the present application can further include the following steps:

[0453] outputting an alarm information when it is detected that the pole piece flame heating system meets a preset alarm condition;

[0454] The preset alarm condition includes at least one of the following:

[0455] The flame ignition result fed back by any ignition sensor indicates that the flame ignition is switched from success to failure;

[0456] In a case where the combustible gas flow control valve is in a closed state, the flame ignition result fed back by the corresponding ignition sensor indicates that the flame ignition is successful;

[0457] In a case where the combustible gas flow control valve is in a closed state, the flame ignition result fed back by the corresponding ignition sensor indicates that the flame ignition is successful;

[0458] In a case where the combustible gas flow control valve is in a closed state, the flame ignition result fed back by the corresponding ignition sensor indicates that the flame ignition is successful;

[0459] In a case where the combustible gas flow control valve is in a closed state, the flame ignition result fed back by the corresponding ignition sensor indicates that the flame ignition is successful;

[0460] The implementation manners of the steps in the embodiments of the present application can refer to the related contents in the above-mentioned pole piece flame heating system embodiments, which will not be described herein again.

[0461] It should be understood that, although each step in the flowchart involved in the above-mentioned embodiments is displayed in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless explicitly stated herein, the execution of these steps has no strict sequence limitation, and these steps can be executed in other sequences. Moreover, at least part of the steps in the flowchart involved in the above-mentioned embodiments can include multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or steps or stages in other steps.

[0462] Finally, it should be noted that: the above-mentioned embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above-mentioned embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pole piece flame heating system, wherein, The pole piece flame heating system comprises: a combustible gas source, a combustible gas transmission pipeline connected with an output end of the combustible gas source, and an output end of the combustible gas transmission pipeline connected with an igniter, the combustible gas transmission pipeline being configured to transmit a first preset flow of combustible gas provided by the combustible gas source to the igniter; an auxiliary gas source, an auxiliary gas transmission pipeline connected with an output end of the auxiliary gas source, and an output end of the auxiliary gas transmission pipeline connected with the igniter, the auxiliary gas transmission pipeline being configured to transmit a second preset flow of auxiliary gas provided by the auxiliary gas source to the igniter; wherein a ratio of the first preset flow to the second preset flow belongs to a preset mixed gas ratio range; the igniter, a gas output port of the igniter facing a pole piece, and the igniter being configured to generate an electric spark to ignite a target mixed gas output by the gas output port to form a flame when receiving an ignition instruction; wherein the target mixed gas comprises a mixture of the combustible gas and the auxiliary gas, and the flame is configured to heat the pole piece.

2. The pole piece flame heating system of claim 1, wherein, The pole piece flame heating system further comprises a mixing device, wherein a first input end of the mixing device is connected with the output end of the combustible gas transmission pipeline, a second input end of the mixing device is connected with the output end of the auxiliary gas transmission pipeline, and an output end of the mixing device is connected with the igniter; wherein the mixing device is configured to mix the first preset flow of combustible gas transmitted by the combustible gas transmission pipeline and the second preset flow of auxiliary gas transmitted by the auxiliary gas transmission pipeline to obtain the target mixed gas, and output the target mixed gas to the igniter.

3. The pole piece flame heating system of claim 2, wherein, A combustible gas flow control valve is arranged on the combustible gas transmission pipeline; The combustible gas flow control valve is configured to adjust an opening value of the combustible gas flow control valve to control the combustible gas transmission pipeline to transmit the first preset flow of combustible gas to the igniter.

4. The pole piece flame heating system of claim 3, wherein, A combustible gas pressure sensor is further arranged on the combustible gas transmission pipeline, and the combustible gas pressure sensor is configured to detect a pressure value of the combustible gas transmitted by the combustible gas transmission pipeline; The combustible gas flow control valve is specifically configured to adjust the opening value of the combustible gas flow control valve according to the first preset flow, the pressure value detected by the combustible gas pressure sensor, and a pipe diameter of the combustible gas transmission pipeline.

5. The pole piece flame heating system of claim 3 or 4, wherein, A total combustible gas flow control valve is further arranged between the combustible gas source and the combustible gas transmission pipeline; wherein the total combustible gas flow control valve is configured to adjust an opening value of the total combustible gas flow control valve to control the combustible gas transmission pipeline to transmit the first preset flow of combustible gas to the igniter.

6. The pole piece flame heating system of any of claims 3-5, wherein, A first check valve is further arranged between the combustible gas source and the combustible gas transmission pipeline, and the first check valve is configured to prohibit the combustible gas in the combustible gas transmission pipeline from being transmitted to the combustible gas source.

7. The pole piece flame heating system of any of claims 3-6, wherein, An auxiliary gas flow control valve is arranged on the auxiliary gas transmission pipeline; The combustion-supporting gas flow control valve is configured to adjust an opening value of the combustion-supporting gas flow control valve to control the combustion-supporting gas transmission pipeline to transmit the second preset flow of combustion-supporting gas to the igniter.

8. The pole piece flame heating system of claim 7, wherein, The combustion-supporting gas transmission pipeline is further provided with a combustion-supporting gas pressure sensor configured to detect a pressure value of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline. The combustion-supporting gas flow control valve is specifically configured to adjust the opening value of the combustion-supporting gas flow control valve according to the second preset flow, the pressure value detected by the combustion-supporting gas pressure sensor, and a pipe diameter of the combustion-supporting gas transmission pipeline.

9. The pole piece flame heating system of any of claims 3-8, wherein, In the case that the output end of the combustible gas source is connected to the input end of the plurality of combustible gas transmission pipelines, and the output end of the combustion-supporting gas source is connected to the input end of the plurality of combustion-supporting gas transmission pipelines, the pole piece flame heating system comprises a plurality of igniters, and the mixing device comprises a plurality of mixing chambers; wherein the output end of each combustible gas transmission pipeline and the output end of each combustion-supporting gas transmission pipeline are respectively connected to the input end of the corresponding mixing chamber, and the output end of each mixing chamber is respectively connected to the corresponding igniter. The mixing chamber is configured to mix the first preset flow of combustible gas transmitted by the corresponding combustible gas transmission pipeline and the second preset flow of combustion-supporting gas transmitted by the corresponding combustion-supporting gas transmission pipeline to obtain the target mixed gas, and output the target mixed gas to the corresponding igniter.

10. The pole piece flame heating system of claim 9, wherein, The igniter comprises an ignition assembly and a spray head; wherein the input end of the spray head is connected to the output end of the corresponding mixing chamber, and the gas output port of the spray head faces the pole piece. The spray head is configured to spray the target mixed gas toward the pole piece through the gas output port. The ignition assembly is configured to generate an electric spark to ignite the target mixed gas output by the spray head to form a flame.

11. The pole piece flame heating system of claim 10, wherein, A second check valve is further arranged between the input end of the spray head and the output end of the corresponding mixing chamber, and the second check valve is configured to prevent the target mixed gas in the spray head from being transmitted to the mixing chamber.

12. The pole piece flame heating system of any of claims 9-11, wherein, In the case that the pole piece flame heating system comprises a first igniter and a second igniter, the gas output port of the first igniter faces a first surface of the pole piece to form a first flame toward the first surface; The gas output port of the second igniter faces a second surface of the pole piece to form a second flame toward the second surface.

13. The pole piece flame heating system of claim 12, wherein, The pole piece flame heating system further comprises a plurality of pole piece driving rollers and a cooling roller, wherein the plurality of pole piece driving rollers are configured to drive the pole piece to move in a first direction, and the cooling roller is configured to drive the pole piece to move in a second direction perpendicular to the first direction. The first igniter and the second igniter are arranged between the cooling roller and the adjacent pole piece driving roller, and the directions of the first flame of the first igniter and the second flame of the second igniter are perpendicular to the second direction.

14. The pole piece flame heating system of any of claims 9-13, wherein, The pole piece flame heating system further comprises a plurality of ignition sensors, wherein the ignition sensors are arranged one-to-one with the igniters; The ignition sensor is configured to detect a flame ignition result of the corresponding igniter, and the flame ignition result is used to indicate that the flame ignition of the igniter is successful or failed.

15. The pole piece flame heating system of any of claims 9-14, wherein, The pole piece flame heating system further comprises a plurality of driving assemblies, wherein the driving assemblies are connected one-to-one with the igniters; The driving assembly is configured to drive the igniter to move according to the transmission speed of the pole piece, so as to adjust the distance between the igniter and the pole piece.

16. The pole piece flame heating system of claim 15, wherein, The driving assembly is specifically configured to drive the igniter to move to a preset position corresponding to the transmission speed of the pole piece, so as to adjust the distance between the igniter and the pole piece to a preset distance corresponding to the transmission speed.

17. The pole piece flame heating system of claim 15, wherein, The driving assembly is specifically configured to: determine a speed difference between the transmission speed of the pole piece and a preset transmission speed; determine a position adjustment parameter of the driving assembly according to a preset position proportional coefficient, a preset position integral coefficient, a preset position differential coefficient, and the speed difference; drive the igniter to move according to the position adjustment parameter, so as to adjust the distance between the igniter and the pole piece.

18. The pole piece flame heating system of any one of claims 1-17, wherein, The pole piece flame heating system further comprises a first thickness gauge and a second thickness gauge; wherein the first thickness gauge is configured to detect a first pole piece thickness before the flame of the igniter heats the pole piece; and the second thickness gauge is configured to detect a second pole piece thickness after the flame of the igniter heats the pole piece. The combustible gas transmission pipeline is configured to adjust the flow of the combustible gas transmitted by the combustible gas transmission pipeline to the igniter according to a thickness difference between the first pole piece thickness and the second pole piece thickness; or The combustion-supporting gas transmission pipeline is configured to adjust the flow of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to the igniter according to a thickness difference between the first pole piece thickness and the second pole piece thickness.

19. The pole piece flame heating system of claim 18, wherein, The first pole piece thickness comprises a plurality of first pole piece thickness values corresponding to a plurality of preset detection positions, and the second pole piece thickness comprises a plurality of second pole piece thickness values corresponding to the plurality of preset detection positions; and the combustible gas transmission pipeline is specifically configured to: determine a thickness difference between the first pole piece thickness value and the second pole piece thickness value of each preset detection position; determine a target adjustment ratio according to a preset thickness proportional coefficient, a preset thickness integral coefficient, a preset thickness differential coefficient, and the thickness difference of each preset detection position; wherein the target adjustment ratio is an adjusted flow ratio of the combustible gas transmitted by the combustible gas transmission pipeline to the igniter to the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to the igniter; adjust the flow of the combustible gas transmitted by the combustible gas transmission pipeline to the igniter according to the target adjustment ratio.

20. The pole piece flame heating system of claim 19, wherein, The combustible gas transmission pipeline is specifically configured to: For each of the preset detection positions, a sub-target adjustment ratio corresponding to the preset detection position is determined according to the preset thickness proportional coefficient, the preset thickness integral coefficient, the preset thickness differential coefficient, and a thickness difference value of the preset detection position; The target adjustment ratio is determined according to the sub-target adjustment ratios corresponding to each of the preset detection positions.

21. The pole piece flame heating system of claim 18, wherein, The first pole piece thickness includes a plurality of first pole piece thickness values corresponding to a plurality of preset detection positions, and the second pole piece thickness includes a plurality of second pole piece thickness values corresponding to the plurality of preset detection positions; the combustion-supporting gas transmission pipeline is specifically configured to: Determine a thickness difference value between the first pole piece thickness value and the second pole piece thickness value of each of the preset detection positions; Determine a target adjustment ratio according to a preset thickness proportional coefficient, a preset thickness integral coefficient, a preset thickness differential coefficient, and a thickness difference value of each of the preset detection positions; the target adjustment ratio is an adjusted flow ratio of the combustible gas transmitted by the combustible gas transmission pipeline to the igniter to the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to the igniter; Adjust the flow of the combustion-supporting gas transmitted by the combustion-supporting gas transmission pipeline to the igniter according to the target adjustment ratio.

22. The pole piece flame heating system of any one of claims 1-21, wherein, The pole piece flame heating system further comprises a cooling liquid transmission pipeline, a cooling roller, and a temperature sensor, and a cooling liquid flow control valve is arranged on the cooling liquid transmission pipeline; The output end of the cooling liquid transmission pipeline is connected with the cooling roller, and the cooling liquid transmission pipeline is configured to transmit cooling liquid to the cooling roller; The cooling roller is configured to reduce the pole piece temperature of the pole piece wound on the cooling roller by using the cooling liquid; The temperature sensor is configured to detect the pole piece temperature after the pole piece is cooled by the cooling roller; The cooling liquid flow control valve is configured to adjust the opening value of the cooling liquid flow control valve according to the pole piece temperature detected by the temperature sensor and / or the transmission speed of the pole piece, so as to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline to the cooling roller.

23. The pole piece flame heating system of claim 22, wherein, The cooling liquid flow control valve is specifically configured to: Determine a temperature difference value between a preset pole piece temperature and the pole piece temperature detected by the temperature sensor; Determine a target adjustment opening value of the cooling liquid flow control valve according to a preset flow proportional coefficient, a preset flow integral coefficient, a preset flow differential coefficient, and the temperature difference value; Adjust the opening value of the cooling liquid flow control valve to the target adjustment opening value, so as to adjust the flow of the cooling liquid transmitted by the cooling liquid transmission pipeline to the cooling roller.

24. The pole piece flame heating system of any one of claims 1-23, wherein, The pole piece flame heating system further comprises a fan connected with a containing space for containing the igniter, and the fan is configured to discharge the gas in the containing space to the outside of the containing space; The fan is further configured to adjust the operation mode of the fan according to the flame ignition result of the igniter and / or the operation state of the pole piece transmission roller; the operation mode of the fan includes operation modes of different wind power gears.

25. The pole piece flame heating system of claim 24, wherein, The pole piece flame heating system further comprises a combustible gas concentration sensor arranged in a preset containing space in the pole piece flame heating system. The fan is further configured to adjust an operation mode of the fan according to a flame ignition result of the igniter, an operation state of the pole piece transmission roller, and / or a combustible gas concentration value detected by the combustible gas concentration sensor.

26. The pole piece flame heating system of any one of claims 1-25, wherein, The combustible gas transmission pipeline is specifically configured to transmit the first preset flow of combustible gas to the igniter when the pole piece flame heating system meets a preset starting condition. The combustion-supporting gas transmission pipeline is specifically configured to transmit the second preset flow of combustion-supporting gas to the igniter when the pole piece flame heating system meets a preset starting condition. The preset starting condition includes at least one of the following: a first pole piece thickness before the pole piece heating meets a preset thickness requirement, a transmission speed of the pole piece transmission roller meets a preset transmission speed requirement, and a transmission direction of the pole piece transmission roller meets a preset transmission direction requirement.

27. The pole piece flame heating system of claim 26, wherein, The combustion-supporting gas transmission pipeline is further configured to transmit a first preset duration of combustion-supporting gas to the igniter before transmitting the second preset flow of combustion-supporting gas to the igniter, and the first preset duration refers to a duration required for the gas transmission pipeline of the pole piece flame heating system to be filled with combustion-supporting gas. The combustible gas transmission pipeline is specifically configured to transmit the first preset flow of combustible gas to the igniter after the combustion-supporting gas transmission pipeline transmits the first preset duration of combustion-supporting gas to the igniter.

28. The pole piece flame heating system of any one of claims 1-27, wherein, The combustible gas transmission pipeline is further configured to stop transmitting combustible gas to the igniter when the pole piece transmission roller stops operating. The combustion-supporting gas transmission pipeline is further configured to continue transmitting combustion-supporting gas to the igniter when the pole piece transmission roller stops operating, and stop transmitting combustion-supporting gas to the igniter after a second preset duration, and the second preset duration refers to a duration required for the gas transmission pipeline of the pole piece flame heating system to be filled with combustion-supporting gas.

29. The pole piece flame heating system of any one of claims 1-28, wherein, The pole piece flame heating system further includes a controller connected to the igniter. The controller is configured to send the ignition instruction to the igniter.

30. The pole piece flame heating system of claim 29, wherein, The controller is further configured to output alarm information when it is detected that the pole piece flame heating system meets a preset alarm condition. The preset alarm condition includes at least one of the following: The flame ignition result fed back by any ignition sensor indicates that the flame ignition is switched from success to failure; The flame ignition result fed back by the corresponding ignition sensor indicates that the flame ignition is successful when the combustible gas flow control valve is in a closed state; The flame ignition result fed back by the corresponding ignition sensor indicates that the flame ignition fails when the igniter continuously ignites the target mixed gas output by the gas output port for more than a third preset duration. The flow difference between the first preset flow of the combustible gas transmission pipeline and the actual combustible gas flow detected by the combustible gas flow sensor is greater than a preset flow threshold value; The pressure value detected by the combustible gas pressure sensor exceeds a preset pressure threshold value range.

31. A pole piece flame heating method, wherein, The method is applied to the pole piece flame heating system as claimed in any one of claims 1-30, and the method comprises: Transmitting a first preset flow of combustible gas to an igniter based on the combustible gas provided by a combustible gas source; Transmitting a second preset flow of combustion-supporting gas to the igniter based on the combustion-supporting gas provided by a combustion-supporting gas source; wherein the ratio of the first preset flow to the second preset flow belongs to a preset mixed gas ratio range; Upon receiving an ignition instruction, generating an electric spark to ignite a target mixed gas output by a gas output port of the igniter to form a flame; wherein the target mixed gas comprises a mixed gas of the combustible gas and the combustion-supporting gas; and the flame is used for heating a pole piece.

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