A method, device, equipment and storage medium for correcting a pole piece

Abstract

The application provides a pole piece deviation correction method, device, equipment and storage medium. The pole piece deviation correction method comprises the following steps: determining a first deviation of a pole piece on a laminating machine in a first direction; correcting the pole piece in the first direction according to the first deviation; determining a second deviation of the pole piece in a second direction; the second deviation is different from the first deviation; and correcting the pole piece in the second direction according to the second deviation. The pole piece deviation correction method is used to effectively correct the pole piece and ensure the performance of the pole piece.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a method, apparatus, device, and storage medium for correcting electrode polarization. Background Technology

[0002] In the battery forming process, battery electrodes can be unwound using a stacking machine. During the unwinding process, the electrodes may become misaligned, which can affect the final composite electrode. Therefore, it is necessary to correct the misalignment of the electrodes during the unwinding process.

[0003] Existing electrode correction methods correct the electrode in the unwinding direction. This correction method cannot achieve effective correction of the electrode, and therefore cannot guarantee the performance of the electrode. Summary of the Invention

[0004] The purpose of this application is to provide a method, apparatus, device, and storage medium for correcting electrode polarization, so as to achieve effective polarization correction of the electrode and ensure the performance of the electrode.

[0005] In a first aspect, this application provides a method for correcting the offset of an electrode sheet, comprising: determining a first offset of the electrode sheet on a stacking machine in a first direction; correcting the offset of the electrode sheet in the first direction according to the first offset; determining a second offset of the electrode sheet in a second direction; and correcting the offset of the electrode sheet in the second direction according to the second offset.

[0006] In this application, considering that the electrode may be offset in multiple directions, the electrode is corrected in a first direction based on a first offset, and in a second direction based on a second offset. In this way, the offset of the electrode in different directions is corrected, thereby achieving effective electrode correction and ensuring the performance of the electrode, such as its stability and uniformity.

[0007] As one possible implementation, the first direction is the direction perpendicular to the unwinding direction of the stacking machine within the unwinding plane of the stacking machine, and the first offset is the distance by which the electrode sheet is offset from a first reference position in the vertical direction.

[0008] In this application, due to the influence of friction, installation accuracy, etc., the electrode may be offset in the vertical direction of the unwinding direction. Therefore, the electrode is corrected in the vertical direction by correcting the electrode based on the first offset.

[0009] As one possible implementation, determining the first offset of the electrode on the stacker in a first direction includes: detecting the first offset by a distance detection device.

[0010] In this application, a distance detection device is used to achieve effective and accurate detection of the first offset.

[0011] As one possible implementation, correcting the electrode in the first direction based on the first offset includes: determining a first offset direction of the electrode in the first direction; and controlling the electrode to move the first offset in the first direction in the opposite direction to the first offset direction by the first offset.

[0012] In this application, the offset direction of the electrode in the first direction is first determined, and then the electrode is controlled to move by a first offset amount in the opposite direction of the offset direction so that the electrode no longer has an offset in the first direction, thereby realizing electrode correction in the first direction.

[0013] As one possible implementation, controlling the electrode to move the first offset amount in the opposite direction of the first offset direction in the first direction includes: generating a control command for a first correction motor based on the first offset direction and the first offset amount; sending the control command to the first correction motor so that the first correction motor controls the electrode to move the first offset amount in the opposite direction of the first offset direction in the first direction.

[0014] In this application, a correction motor is used as a correction mechanism. Control commands for the correction motor are generated so that the correction motor can perform correction according to the control commands.

[0015] As one possible implementation, the second direction is the rotational direction corresponding to the unwinding direction of the stacking machine within the unwinding plane of the stacking machine, and the second offset is the angle by which the electrode sheet is offset from a second reference position in the rotational direction.

[0016] In this application, if the electrode is subjected to uneven external force during its forward movement, it may wrinkle or rotate, causing the electrode to shift in the rotational direction. Therefore, by using a second shift in the rotational direction, the electrode can be corrected in that direction. Combined with the aforementioned correction in the first direction, correction can be achieved in all possible shift directions.

[0017] As one possible implementation, determining the second offset of the electrode in the second direction includes: acquiring images of the electrode at different times using an image acquisition device; and determining the second offset based on the images at the different times.

[0018] In this application, the second offset is effectively and accurately determined by acquiring images of the electrode at different times.

[0019] As one possible implementation, correcting the electrode in the second direction according to the second offset includes: determining a second offset direction of the electrode in the second direction; and controlling the electrode to rotate in the second direction in the opposite direction of the second offset by the second offset.

[0020] In this application, the offset direction of the electrode in the second direction is first determined, and then the electrode is controlled to rotate in the opposite direction by a second offset amount, so that the electrode no longer has an offset in the second direction, thereby realizing electrode correction in the second direction.

[0021] As one possible implementation, controlling the electrode to rotate in the second direction in the opposite direction of the second offset by the second offset amount includes: generating a control command for a second correction motor based on the second offset direction and the second offset amount; and sending the control command to the second correction motor to cause the electrode to rotate in the second direction in the opposite direction of the second offset by the second offset amount.

[0022] In this application, a correction motor is used as a correction mechanism. Control commands for the correction motor are generated so that the correction motor can perform correction according to the control commands.

[0023] As one possible implementation, determining the first offset of the electrode in the first direction includes: determining the first offset of the electrode in the first direction during the unwinding process of the electrode.

[0024] In this application, during the unwinding process of the electrode sheet, the electrode sheet may shift to the left or right due to factors such as friction and installation accuracy. In this case, the first offset amount can be detected to achieve vertical correction in the first direction.

[0025] As one possible implementation, determining the second offset of the electrode in the second direction on the stacking machine includes: determining the second offset of the electrode in the second direction during the forward movement after the electrode is cut, and before the electrode is fed into the feed material.

[0026] In this application, after the electrode is cut, it may rotate due to uneven friction. At this time, the second offset can be used to achieve rotational correction in the second direction.

[0027] Secondly, this application provides an electrode correction device, comprising: various functional modules for implementing the electrode correction method described in the first aspect and any possible implementation of the first aspect.

[0028] Thirdly, this application provides an electrode correction device, comprising: a processor; and a memory communicatively connected to the processor; the memory stores instructions executable by the processor, the instructions being executed by the processor to enable the processor to perform the electrode correction method described in the first aspect and any possible implementation thereof.

[0029] Fourthly, this application provides a computer-readable storage medium storing a computer program, which, when executed by a computer, performs the electrode correction method described in the first aspect and any possible implementation thereof. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the electrode correction system provided in the embodiments of this application;

[0032] Figure 2 A flowchart illustrating the electrode correction method provided in this application embodiment;

[0033] Figure 3 A schematic diagram of the first direction and first offset provided for embodiments of this application;

[0034] Figure 4 A schematic diagram of the second direction and second offset provided for embodiments of this application;

[0035] Figure 5 A schematic diagram of the electrode correction device provided in the embodiments of this application;

[0036] Figure 6 This is a schematic diagram of the structure of the electrode correction device provided in the embodiments of this application.

[0037] Icons: 10-Correction system; 11-First correction mechanism; 12-Second correction mechanism; 13-Correction device for electrode sheet; 130-Processor; 131-Memory; 14-Distance detection device; 15-Image acquisition device; 20-Electrode sheet; 500-Correction device for electrode sheet; 510-Detection module; 520-Correction module. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0040] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0041] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0042] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0043] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0044] Currently, judging from market trends, the application of batteries is becoming increasingly widespread. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of the application areas of power batteries, the market demand for them is also constantly increasing.

[0045] As batteries become increasingly widely used, their manufacturing technology is also constantly evolving. In the battery forming process, battery electrodes are unwound using a stacking machine. During the unwinding process, the electrodes may become misaligned, which can affect the final composite electrode. Therefore, it is necessary to correct the misalignment during the unwinding process.

[0046] Existing correction methods correct the electrode's deviation in the unwinding direction. For example, they detect the electrode's offset in the unwinding direction and then use a correction mechanism to correct the deviation in that direction.

[0047] The applicant's research revealed that existing correction schemes only consider the offset of the electrode sheet in the unwinding direction during the unwinding process. However, in reality, electrode sheet offset can occur in various ways. For example, during continuous unwinding, the electrode sheet may shift left or right due to friction, installation accuracy, and other factors. Furthermore, after the electrode sheet is cut (also known as after electrode cutting), uneven external forces during its forward movement can cause wrinkles and rotation, i.e., rotational offset.

[0048] Therefore, the existing correction schemes have a single correction method, which makes it impossible to achieve effective correction of the electrode, and thus cannot guarantee the performance of the electrode.

[0049] After careful consideration, the applicant realized that the electrode sheet may shift during unwinding or after cutting, and the direction of this shift differs in these different scenarios. Therefore, by correcting the electrode sheet in multiple shift directions, effective correction can be ensured.

[0050] Based on this, in the technical solution of this application embodiment, considering that the electrode may be offset in multiple directions, the electrode is corrected in the first direction based on a first offset, and in the second direction based on a second offset. In this way, the electrode is corrected for different offsets in different directions, thereby achieving effective electrode correction and ensuring the performance of the electrode, such as its stability and uniformity.

[0051] The technical solution provided in this application can be applied to the electrode correction system. Please refer to... Figure 1 This is a schematic diagram of the structure of a correction system 10 provided in an embodiment of this application. The correction system 10 includes: a first correction mechanism 11, a second correction mechanism 12, and a correction device 13 for the electrode sheet.

[0052] The first correction mechanism 11 and the second correction mechanism 12 are used to achieve electrode correction in different correction directions.

[0053] exist Figure 1In the diagram, G1-G7 represent transition rollers, the lines passing through G1-G7 represent unwinding material, and M1 represents the unwinding motor.

[0054] Because the electrode shifts in different directions and occurs during different unwinding processes, the positions of the first correction mechanism 11 and the second correction mechanism 12 are also different.

[0055] The electrode correction device 13 is communicatively connected to the first correction mechanism 11 and the second correction mechanism 12. The electrode correction device 13 is used to control the first correction mechanism 11 and the second correction mechanism 12 respectively according to the detected relevant parameters, so as to realize the corresponding electrode correction.

[0056] In some embodiments, the correction system 10 may further include a distance detection device and an image acquisition device, wherein the distance detection device is used to detect the offset distance, and the image acquisition device is used to detect the offset angle. In the embodiments of this application, the offset distance and offset angle can be understood as the amount of offset in different offset directions.

[0057] The electrode correction device 13 is also connected to the distance detection device and the image acquisition device, respectively, so as to obtain the detected offset information from the distance detection device and the detected offset information from the image acquisition device.

[0058] The electrode correction method provided in this application embodiment can be applied to the correction of anode and / or cathode plates, and is not limited thereto.

[0059] In addition to being used for electrode correction in stacking machines, in other embodiments, it can also be used for electrode correction in other battery processing equipment (such as winding machines), which is not limited here.

[0060] Based on the above introduction of the inventive concept and application scenarios, please refer to the following... Figure 2 Here is a flowchart of an electrode correction method provided in an embodiment of this application. The correction method includes:

[0061] Step 210: Determine the first offset of the electrode on the stacker in the first direction.

[0062] Step 220: Correct the electrode in the first direction according to the first offset.

[0063] Step 230: Determine the second offset of the electrode in the second direction.

[0064] Step 240: Correct the electrode in the second direction according to the second offset.

[0065] In step 210, the electrode sheets on the stacking machine can be referenced. Figure 1The lines G1-G7 in the diagram represent the unwound material, meaning that the electrode sheet, as the unwound material, will pass through the unwound motor and transition rollers in sequence on the stacking machine, continuously moving forward.

[0066] During the unwinding process of the electrode sheet, the electrode sheet may shift in the first direction. In step 210, the corresponding detection device detects the first shift amount. In step 220, the electrode sheet correction device corrects the electrode sheet in the first direction according to the first shift amount.

[0067] In step 230, the corresponding detection device detects the second offset; in step 240, the electrode correction device performs electrode correction in the second direction according to the second offset.

[0068] It's understandable that different correction directions may result in different values ​​and parameter types for the correction amount. For example, distance and angle are two different types of offsets.

[0069] In the technical solution provided in this application embodiment, considering that the electrode may be offset in multiple directions, the electrode is corrected in a first direction based on a first offset, and in a second direction based on a second offset. In this way, the offset of the electrode in different directions is corrected, thereby achieving effective electrode correction and ensuring the performance of the electrode, such as its stability and uniformity.

[0070] As an optional implementation method, please refer to Figure 3 This is a schematic diagram of the first direction and the first offset. Figure 3 In the stacking machine, the unwinding direction is N within the unwinding plane. Therefore, the first direction is S, which is perpendicular to the unwinding direction N within the stacking machine's unwinding plane. Correspondingly, the first offset d1 is the distance by which the electrode 20 is offset from the first reference position Q1 in the vertical direction S.

[0071] In this implementation, during the continuous unwinding process of the electrode 20, due to the influence of friction, installation accuracy, and other factors, the electrode 20 may shift left or right (i.e., shift left or right in the vertical direction S). Therefore, the electrode 20 can be corrected in the vertical direction S.

[0072] In the technical solution of this application embodiment, due to the influence of friction, installation accuracy, etc., the electrode 20 may be offset in the vertical direction S of the unwinding direction N. Therefore, the electrode 20 is corrected in the vertical direction S based on the first offset d1.

[0073] Please continue to refer to Figure 3A distance detection device 14 is provided in the unwinding direction N of the electrode 20. Therefore, in some embodiments, the first offset d1 is detected by the distance detection device 14.

[0074] Figure 3 The distance detection device 14 shown is located on the right. In some embodiments, the distance detection device 14 may also be located on the left. Figure 3 The illustrations shown do not constitute a limitation on the embodiments of this application.

[0075] In some embodiments, the distance detection device 14 is a sensor or device capable of distance detection, such as a photoelectric sensor, an area scan camera, or a line scan camera.

[0076] It can be understood that when the distance detection device 14 detects the first offset d1, it performs the detection based on the aforementioned first reference position Q1. Figure 3 For example, the distance detection device 14 detects the first offset d1 by detecting the distance between the right edge of the electrode 20 and the reference position Q1 in real time.

[0077] In some embodiments, multiple distance detection devices can be set at different positions in the unwinding direction of the electrode 20, and then the first offset d1 can be determined by combining the detection results of the multiple distance detection devices 14 respectively.

[0078] In other embodiments, a detection period for the first offset d1 can be set, and the first offset d1 can be periodically detected according to the detection period.

[0079] In this embodiment of the application, the first offset d1 is effectively and accurately detected by the distance detection device 14.

[0080] It is understandable that if the first offset d1 is 0, it means that the electrode 20 has not been offset in the first direction, and there is no need to correct the electrode 20 in the first direction.

[0081] As an optional implementation, step 220 includes: determining a first offset direction of the electrode 20 in a first direction; and controlling the electrode 20 to move by a first offset amount in the opposite direction of the first offset direction in the first direction.

[0082] In some embodiments, the first offset direction can be determined by combining the current edge position of the electrode 20 with the reference edge position of the electrode 20. For example, assuming the current edge position coordinates of the electrode 20 are (1,0) and the reference edge position coordinates of the electrode 20 are (2,0), then, relative to the reference edge position coordinates of the electrode 20, the electrode 20 is offset to the left. Therefore, the first offset direction is to the left.

[0083] In other embodiments, the first offset direction can also be determined by combining the current center position of the electrode 20 with the center position of the reference, and the specific determination method is the same as that combined with the edge position of the electrode 20.

[0084] It is important to note that the first offset direction here is relative to the vertical direction S, that is, in the vertical direction S, it determines whether to offset to the left or to the right.

[0085] Since the electrode 20 is offset in the first offset direction in the first direction, in order to return the electrode 20 to the reference position, it is necessary to control the electrode 20 to move in the opposite direction of the first offset direction in the first direction by a first offset amount d1.

[0086] In the technical solution of this application embodiment, the offset direction of the electrode 20 in the first direction is first determined, and then the electrode 20 is controlled to move by a first offset in the opposite direction of the offset direction, so that the electrode 20 no longer has an offset in the first direction, thereby realizing the correction of the electrode 20 in the first direction.

[0087] Please continue to refer to Figure 3 As an optional implementation, controlling the electrode 20 to move a first offset amount in the opposite direction of the first offset direction in the first direction includes: generating a control command for the first correction motor M2 based on the first offset direction and the first offset amount; sending the control command to the first correction motor so that the first correction motor M2 controls the electrode 20 to move a first offset amount d1 in the opposite direction of the first offset direction in the first direction.

[0088] In this implementation, the first correction motor M2 can be used as one implementation of the aforementioned first correction mechanism 11. In other embodiments, other correction mechanisms can also be used to achieve correction, which are not limited here.

[0089] For the electrode correction device 13, a control command for the first correction motor M2 can be generated based on the first offset direction and the first offset amount. The control command is sent to the first correction motor M2, and the first correction motor M2 can control the electrode 20 to move a first offset amount d1 in the opposite direction of the first offset direction in the first direction based on the control command.

[0090] In some embodiments, the control of the first correction motor M2 can be achieved by a PID (Proportion Integral Differential) algorithm; or by other control algorithms, which are not limited here.

[0091] In this implementation, the first correction motor M2 controls the movement of the electrode 20. This can be understood as the relative movement between the first correction motor M2 and the electrode 20 generating frictional force, which suppresses the left and right movement of the electrode 20, thereby changing the distance between the electrode 20 and the first reference position Q1, and achieving correction.

[0092] In the technical solution of this application embodiment, the correction motor is used as the correction mechanism. By generating control commands for the correction motor, the correction motor can achieve correction according to the control commands.

[0093] Please refer to Figure 4 This is a schematic diagram of the second direction and the second offset. The second direction is the rotation direction R corresponding to the unwinding direction N of the stacking machine in the unwinding plane of the stacking machine. The corresponding second offset d2 is the angle by which the electrode 20 is offset from the second reference position Q2 in the rotation direction.

[0094] like Figure 4 As shown, the rotation direction R is based on the unwinding direction N and may rotate clockwise or counterclockwise. If the electrode 20 does not deviate in the rotation direction R, the second offset d2 is 0. If the electrode 20 deviates in the rotation direction R, the second offset d2 is the corresponding offset angle, for example, 15 degrees relative to the unwinding direction N.

[0095] In the technical solution of this application embodiment, if the electrode 20 is subjected to uneven external force during its forward movement, it will wrinkle or rotate, causing the electrode 20 to deviate in the rotation direction R. Therefore, the electrode 20 is corrected in the rotation direction R by the second offset d2 of the electrode 20. Combined with the aforementioned correction in the first direction, the electrode 20 can be corrected in all possible offset directions.

[0096] In some embodiments, determining the second offset d2 of the electrode 20 in the second direction includes: acquiring images of the electrode 20 at different times using the image acquisition device 15; and determining the second offset based on the images at different times.

[0097] In this implementation, the image acquisition device 15 can acquire images of the electrode 20 at different times. By comparing the images at different times, the offset of the electrode 20 in the rotation direction R can be determined. For example, comparing the deviation between the edges of the same tab side in the images at different times.

[0098] In some embodiments, the image acquisition device 15 is a CCD (Charge Coupled Device Camera).

[0099] In the technical solution of this application embodiment, by acquiring images of the electrode 20 at different times, the second offset d2 is effectively and accurately determined based on the images at different times.

[0100] As an optional implementation, step 240 includes: determining a second offset direction of the electrode 20 in the second direction; and controlling the electrode 20 to rotate in the second direction in the opposite direction by a second offset amount d2.

[0101] In some embodiments, taking the second direction as the rotation direction R as an example, the electrode 20 may be offset in the clockwise direction or in the counterclockwise direction in the second direction. Therefore, it is necessary to determine the specific offset direction of the electrode 20 in the second direction.

[0102] As an optional implementation, the process of determining the second offset direction includes: determining whether the second offset amount is offset clockwise or counterclockwise relative to the second reference position Q2. If it is offset clockwise, the second offset direction is clockwise; if it is offset counterclockwise, the second offset direction is counterclockwise.

[0103] Based on the second offset direction, the electrode correction device 13 controls the electrode 20 to rotate a second offset amount d2 in the opposite direction of the second offset direction in the second direction, thereby realizing the correction of the electrode 20.

[0104] In the technical solution of this application embodiment, the offset direction of the electrode 20 in the second direction is first determined, and then the electrode 20 is controlled to rotate in the opposite direction of the offset direction by a second offset amount d2, so that the electrode 20 no longer has an offset in the second direction, thereby realizing the correction of the electrode 20 in the second direction.

[0105] As an optional implementation, controlling the electrode 20 to rotate in the second offset direction in the second direction by a second offset amount d2 includes: generating a control command for the second correction motor based on the second offset direction and the second offset amount d2; and sending the control command to the second correction motor so that the electrode 20 rotates in the second offset direction in the second direction by a second offset amount d2.

[0106] In this embodiment, the second correction motor can be used as one implementation of the aforementioned second correction mechanism 12. Other implementations of the second correction mechanism 12 are also possible and are not limited here.

[0107] In some embodiments, the control of the second correction motor can be achieved through a PID algorithm; or other control algorithms, which are not limited here.

[0108] In some embodiments, since the second alignment motor needs to rotate the pole piece 20 in the opposite direction in the second direction, the second alignment motor can be a rotary motor. That is, the movement of the second alignment motor is a rotary movement to drive the pole piece 20 to rotate.

[0109] In the technical solution of this application embodiment, the correction motor is used as the correction mechanism. By generating control commands for the correction motor, the correction motor can achieve correction according to the control commands.

[0110] In some embodiments, step 210 includes: determining a first offset d1 of the electrode 20 in the first direction during the unwinding process of the electrode 20.

[0111] In this implementation, the first direction can be the aforementioned vertical direction S.

[0112] In the technical solution of this application embodiment, during the unwinding process of the electrode 20, the electrode 20 may be offset to the left or right due to the influence of friction, installation accuracy and other factors. At this time, vertical correction in the first direction can be achieved by detecting the first offset amount.

[0113] In some embodiments, step 230 includes: during the forward movement of the electrode 20 after it has been cut, and before the electrode 20 is fed into the feedstock, determining a second offset d2 of the electrode 20 in a second direction.

[0114] In this implementation, the second direction can be the aforementioned rotational direction R.

[0115] In the technical solution of this application embodiment, after the electrode 20 is cut, it may rotate due to uneven friction. At this time, the rotation correction in the second direction can be achieved by the second offset d2.

[0116] Please refer to Figure 5 This is a schematic diagram of the structure of the electrode correction device 500 provided in the embodiment of this application. The electrode correction device 500 includes a detection module 510 and a correction module 520.

[0117] Detection module 510 is used to determine the first offset of electrode 20 on the stacker in the first direction;

[0118] The correction module 520 is used to correct the electrode 20 in the first direction according to the first offset; the detection module 510 is also used to: determine the second offset of the electrode in the second direction; the correction module 520 is also used to: correct the electrode 20 in the second direction according to the second offset.

[0119] In this embodiment of the application, the detection module 510 is specifically used to: detect the first offset by a distance detection device.

[0120] In this embodiment of the application, the correction module 520 is specifically used to: determine the first offset direction of the electrode 20 in the first direction; and control the electrode 20 to move the first offset amount in the opposite direction of the first offset direction in the first direction.

[0121] In this embodiment of the application, the correction module 520 is specifically used to: generate a control command for the first correction motor based on the first offset direction and the first offset amount; and send the control command to the first correction motor so that the control pole piece 20 of the first correction motor moves the first offset amount in the opposite direction of the first offset direction in the first direction.

[0122] In this embodiment of the application, the detection module 510 is specifically used to: acquire images of the electrode 20 at different times using an image acquisition device; and determine the second offset based on the images at the different times.

[0123] In this embodiment of the application, the correction module 520 is specifically used to: determine the second offset direction of the electrode 20 in the second direction; and control the electrode 20 to rotate the second offset amount in the second direction in the opposite direction to the second offset direction.

[0124] In this embodiment of the application, the correction module 520 is specifically used to: generate a control command for the second correction motor based on the second offset direction and the second offset amount; and send the control command to the second correction motor so that the pole piece 20 rotates in the second direction in the opposite direction to the second offset direction by the second offset amount.

[0125] In this embodiment of the application, the detection module 510 is specifically used to: determine the first offset of the electrode 20 in the first direction during the unwinding process of the electrode 20.

[0126] In this embodiment of the application, the detection module 510 is specifically used to: determine the second offset of the electrode 20 in the second direction during the forward movement of the electrode 20 after it is cut, and before the electrode 20 is fed into the feed material.

[0127] The electrode correction device 500 corresponds to the aforementioned electrode correction method, and each functional module corresponds to each step of the method. Therefore, the implementation methods of each functional module refer to the aforementioned method implementation methods and will not be repeated here.

[0128] Please refer to Figure 6 This is a schematic diagram of the structure of the electrode correction device 13 provided in the embodiment of this application. The electrode correction device 13 includes: a processor 130 and a memory 131 communicatively connected to the processor 130.

[0129] The memory 131 stores instructions that can be executed by the processor 130, which enables the processor 130 to perform the electrode correction method described in the foregoing embodiments.

[0130] The processor 130 and the memory 131 can communicate with each other via a communication bus.

[0131] This application also provides a computer-readable storage medium storing a computer program. When the computer program is run by a computer, it executes the electrode correction method described in the foregoing embodiments.

[0132] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0133] Furthermore, the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0134] Furthermore, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0135] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for correcting the polarity of an electrode, characterized in that, include: Determine the first offset of the electrode on the stacker in the first direction; The electrode is corrected in the first direction according to the first offset; Determine the second offset of the electrode in the second direction; The electrode is corrected in the second direction according to the second offset; The first direction is the direction perpendicular to the unwinding direction of the stacking machine within the unwinding plane of the stacking machine, and the first offset is the distance by which the electrode sheet is offset from the first reference position in the vertical direction; The second direction is the rotation direction corresponding to the unwinding direction of the stacking machine within the unwinding plane of the stacking machine, and the second offset is the angle by which the electrode sheet is offset from the second reference position in the rotation direction; Determining the first offset of the electrode in the first direction includes: During the unwinding process of the electrode sheet, a first offset of the electrode sheet in the first direction is determined; Determining the second offset of the electrode on the stacking machine in the second direction includes: During the forward movement of the electrode after it has been cut, and before the electrode is fed into the feed material, a second offset of the electrode in the second direction is determined.

2. The electrode correction method according to claim 1, characterized in that, Determining the first offset of the electrode on the stacking machine in a first direction includes: The first offset is detected by a distance detection device.

3. The electrode correction method according to claim 1, characterized in that, The step of correcting the electrode in the first direction according to the first offset includes: Determine the first offset direction of the electrode in the first direction; The electrode is controlled to move by the first offset amount in the opposite direction of the first offset direction in the first direction.

4. The electrode correction method according to claim 3, characterized in that, The control of moving the electrode in the opposite direction of the first offset direction by the first offset amount in the first direction includes: The control command for the first correction motor is generated based on the first offset direction and the first offset amount; The control command is sent to the first correction motor so that the first correction motor controls the pole piece to move by the first offset amount in the opposite direction of the first offset direction in the first direction.

5. The electrode correction method according to claim 1, characterized in that, Determining the second offset of the electrode in the second direction includes: Images of the electrode at different times are acquired using an image acquisition device; The second offset is determined based on the images at the different times.

6. The electrode correction method according to claim 1, characterized in that, The step of correcting the electrode in the second direction according to the second offset includes: Determine the second offset direction of the electrode in the second direction; The electrode is controlled to rotate in the second direction in the opposite direction to the second offset direction by the second offset amount.

7. The electrode correction method according to claim 6, characterized in that, The control of the electrode to rotate in the second direction in the opposite direction by the second offset amount includes: The control command for the second correction motor is generated based on the second offset direction and the second offset amount; The control command is sent to the second correction motor to cause the pole piece to rotate by the second offset amount in the second direction in the opposite direction to the second offset direction.

8. A polarization correction device for an electrode, characterized in that, include: The detection module is used to determine the first offset of the electrode on the stacking machine in the first direction; The correction module is used to correct the electrode in the first direction according to the first offset; The detection module is also used to: determine the second offset of the electrode in the second direction; The correction module is further configured to: correct the electrode in the second direction according to the second offset; The detection module is specifically used for: During the unwinding process of the electrode sheet, a first offset of the electrode sheet in the first direction is determined; During the forward movement of the electrode after it has been cut, and before the electrode is fed into the feed material, a second offset of the electrode in the second direction is determined.

9. A polarity correction device for electrodes, characterized in that, include: processor; and a memory that is communicatively connected to the processor; The memory stores instructions that can be executed by the processor to enable the processor to perform the electrode correction method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which, when executed by a computer, performs the electrode correction method as described in any one of claims 1-7.

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