Punching method and device for pole piece

Abstract

The invention provides a pole piece punching method and device.The method comprises the steps that the initial interval length, corresponding to the initial die cutting requirement, between a first punching cutter and a second punching cutter is obtained, the first punching cutter is used for punching MARK mark holes in a moving winding initial pole piece, and the second punching cutter is used for punching MARK mark holes in the winding initial pole piece; the second punching cutter is used for punching a tab on the moving winding initial pole piece; when the initial die cutting requirement is changed, the current interval length corresponding to the current die cutting requirement is determined according to the changed current die cutting requirement; and moving the first punching cutter according to a comparison result of the initial interval length and the current interval length.

Description

Technical Field

[0001] The present application relates to the technical field of pole piece preparation, and in particular to a pole piece punching method and device. Background Art

[0002] The MARK hole is an important mark for confirming the cutting position of the pole piece during the winding process of multiple pole pieces. It determines whether the length of the pole piece can meet the requirements, thereby affecting whether the battery capacity can meet the requirements. In the prior art, the pole piece punching and MARK hole punching on the original pole piece are realized by a hardware die-cutting machine. In the process of cutting pole pieces of different specifications, the operator needs to manually complete the debugging of the punching knife corresponding to the MARK hole. The operator's experience requirement is relatively high, which is easy to cause a long debugging time and waste of materials. Summary of the invention

[0003] In view of this, the purpose of the present application is to at least provide a method and device for punching a pole piece, by changing the previous die-cutting requirements to determine the initial spacing length between the punching knife for punching the MARK hole and the punching knife for punching the pole ear, and after the die-cutting requirements are changed, determine the current spacing length between the two punching knives, thereby adjusting the position of the first punching knife according to the comparison result between the initial spacing length and the current spacing length, solving the technical problem in the prior art that the distance between the first punching knife and the second punching knife needs to be manually adjusted, resulting in inaccurate adjustment, thereby achieving the technical effect of improving adjustment efficiency and reducing waste.

[0004] This application mainly includes the following aspects:

[0005] In the first aspect, an embodiment of the present application provides a method for punching a pole piece, the method comprising: obtaining an initial interval length between a first punching knife and a second punching knife corresponding to an initial die-cutting requirement, the first punching knife being used for punching a MARK marking hole on a moving wound initial pole piece, and the second punching knife being used for punching a pole ear on a moving wound initial pole piece; when the initial die-cutting requirement changes, determining a current interval length corresponding to the current die-cutting requirement based on the changed current die-cutting requirement; and moving the first punching knife according to a comparison result between the initial interval length and the current interval length.

[0006] Optionally, the die-cutting requirement includes a distance between adjacent target positions in a target punching pole piece, wherein the target positions include a pole ear, a head end MARK hole, and a tail end MARK hole.

[0007] Optionally, the current interval length corresponding to the current die-cutting requirement is determined in the following manner: determine whether the spacing between adjacent target positions at the head end of the target punching pole piece in the current die-cutting requirement belongs to a preset distance interval; when the spacing between adjacent target positions at the head end belongs to the preset distance interval, use the spacing between adjacent target positions at the head end as the current interval length; when the spacing between adjacent target positions at the head end does not belong to the preset distance interval, superimpose the spacing between adjacent target positions at the head end with the spacing between adjacent target positions of the next group in sequence to obtain the spacing sum value, and use the spacing sum value belonging to the preset distance interval as the current interval length.

[0008] Optionally, the method further includes: based on the die-cutting requirements, controlling the second punching knife to punch the tabs on the pole piece in sequence, and controlling the first punching knife to punch MARK holes after a preset number of tab punching times, wherein the MARK holes are used to separate adjacent target punched pole pieces.

[0009] Optionally, the second punching knife is controlled to punch out the pole ears on the pole piece in sequence in the following manner: the winding initial pole piece is controlled to move the spacing between adjacent target positions in sequence, and the second punching knife is controlled to move after each movement to punch out the pole ears in sequence and record the number of pole ear punching times.

[0010] Optionally, the first punching knife is located on one side of the moving direction of the second punching knife pointing to the initial winding pole piece, and the first punching knife is controlled to punch the MARK hole after a preset number of pole ear punching cuts in the following manner: according to the current interval length, a preset number of pole ear punching cuts is determined; after controlling the second punching knife to punch the first pole ear of the target punched pole piece a preset number of pole ear punching cuts is performed, and then the second punching knife is controlled to punch the pole ear while controlling the first punching knife to punch the MARK hole at the head end of the target punched pole piece.

[0011] Optionally, moving the first punching knife according to the comparison result of the initial interval length and the current interval length includes: if the current interval length is greater than the initial interval length, controlling the first punching knife to move away from the second punching knife; if the current interval length is less than the initial interval length, controlling the first punching knife to move toward the second punching knife.

[0012] In the second aspect, an embodiment of the present application also provides a punching device for a pole piece, the device comprising: an acquisition module, used to obtain the initial interval length between a first punching knife and a second punching knife corresponding to an initial die-cutting requirement, the first punching knife being used to punch a MARK marking hole on a moving wound initial pole piece, and the second punching knife being used to punch a pole ear on a moving wound initial pole piece; a determination module, used to determine a current interval length corresponding to a current die-cutting requirement according to a changed current die-cutting requirement when the initial die-cutting requirement changes; an adjustment module, used to move the first punching knife according to a comparison result between the initial interval length and the current interval length.

[0013] In a third aspect, an embodiment of the present application further provides a die-cutting machine, which is used to execute the steps of the pole piece punching method described in the first aspect or any possible implementation manner of the first aspect.

[0014] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the pole piece punching method described in the first aspect or any possible implementation manner of the first aspect are executed.

[0015] The embodiment of the present application provides a punching method and device for a pole piece, the method comprising: obtaining the initial interval length between the first punching knife and the second punching knife corresponding to the initial die-cutting requirement, the first punching knife is used for punching the MARK mark hole on the moving wound initial pole piece, and the second punching knife is used for punching the pole ear on the moving wound initial pole piece; when the initial die-cutting requirement changes, the current interval length corresponding to the current die-cutting requirement is determined according to the changed current die-cutting requirement; according to the comparison result of the initial interval length and the current interval length, the first punching knife is moved. The initial interval length between the punching knife for punching the MARK hole and the punching knife for punching the pole ear is determined by changing the previous die-cutting requirement, and after the die-cutting requirement changes, the current interval length between the two punching knives is determined, so that the position of the first punching knife is adjusted according to the comparison result of the initial interval length and the current interval length, which solves the technical problem of inaccurate adjustment caused by the need to manually adjust the distance between the first punching knife and the second punching knife in the prior art, and achieves the technical effect of improving adjustment efficiency and reducing waste.

[0016] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A flow chart of a pole piece punching method provided in an embodiment of the present application is shown.

[0019] Figure 2 A schematic diagram of a pole piece punching provided in an embodiment of the present application is shown.

[0020] Figure 3 A schematic diagram of a target punched pole piece provided in an embodiment of the present application is shown.

[0021] Figure 4 A schematic diagram of another target punching pole piece provided in an embodiment of the present application is shown.

[0022] Figure 5 A functional module diagram of a pole piece punching device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0023] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of explanation and description and are not used to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn in real proportion. The flowchart used in this application shows the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowchart can be implemented out of sequence, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art, under the guidance of the content of the present application, can add one or more other operations to the flowchart, or remove one or more operations from the flowchart.

[0024] In addition, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0025] In the prior art, the pole lugs and MARK holes are usually punched out on the basis of pole piece winding by laser die-cutting or hardware die-cutting. The MARK hole is an important mark for confirming the cutting position of the pole piece during the winding process of multiple pole lugs. It determines whether the length of the pole piece can meet the requirements, whether the length of the negative pole piece is greater than the length of the positive pole piece, and whether the length of the pole piece can ensure the battery capacity requirements. In the process of changing the pole piece, the hardware die-cutting requires the operator to manually determine the punching position of the MARK hole and manually debug it. Manual debugging requires a high level of experience from the operator, and some personnel may not be able to quickly confirm the cutting position of the MARK hole, resulting in slow changeover progress and material waste.

[0026] Based on this, the embodiment of the present application provides a punching method and device for a pole piece, which determines the initial interval length between the punching knife for punching the MARK hole and the punching knife for punching the pole ear by changing the previous die-cutting requirements, and determines the current interval length between the two punching knives after the die-cutting needs are changed, thereby adjusting the position of the first punching knife according to the comparison result between the initial interval length and the current interval length, solving the technical problem of inaccurate adjustment caused by the need to manually adjust the distance between the first punching knife and the second punching knife in the prior art, and achieving the technical effect of improving adjustment efficiency and reducing waste, which is specifically as follows:

[0027] See also Figure 1 , Figure 1 This is a flow chart of a method for punching a pole piece provided in an embodiment of the present application. Figure 1 As shown, the electrode punching method provided in the embodiment of the present application comprises the following steps:

[0028] S101: Obtaining an initial interval length between a first punching blade and a second punching blade corresponding to an initial die-cutting requirement.

[0029] The first punching knife is used to punch the MARK hole on the moving initial winding pole piece, and the second punching knife is used to punch the pole ear on the moving initial winding pole piece. The initial winding pole piece is unfolded along the preset pole piece movement direction, so that the first punching knife and the second punching knife punch out the MARK hole and the pole ear on the pole piece accordingly.

[0030] Exemplarily, the first punching knife for punching the MARK hole is located on one side of the second punching knife for punching the pole ear. The first punching knife can be located on the side of the second punching knife pointing to the direction of movement of the pole piece, or on the side of the second punching knife opposite to the direction of movement of the pole piece.

[0031] For example, see Figure 2 , Figure 2 A schematic diagram of a pole piece punching method provided in an embodiment of the present application. Figure 2As shown, the first punching knife A of the present application is located on the side of the second punching knife B pointing to the direction of movement of the pole piece, and then, when the initial winding pole piece C is unfolded along the preset direction of movement of the pole piece, the second punching knife B first punches out the pole ear on the initial winding pole piece, and after the pole piece moves for a period of time, the first punching knife A and the second punching knife B simultaneously perform punching actions on the pole piece to punch out the MARK hole and the pole ear respectively. The initial winding pole piece refers to the initial pole piece that is initially wound into a roll and has not yet punched out the pole ear and the MARK hole.

[0032] The die-cutting requirements include the distance between adjacent target positions in a target punched pole piece, and the target positions include the pole lug, the first end MARK hole, and the end MARK hole. In other words, the model requirements include the distance between the first end MARK hole and the first pole lug, the distance between adjacent pole lugs, and the distance between the end MARK hole and the last pole lug in a target punched pole piece.

[0033] A target punched pole piece refers to the pole piece between two adjacent MARK holes on the wound initial pole piece, one of the two adjacent MARK holes serves as the head end MARK hole of the target punched pole piece, and the other of the two adjacent MARK holes serves as the end MARK hole of the target punched pole piece.

[0034] For example, see Figure 3 , Figure 3 A schematic diagram of a target punching electrode provided in an embodiment of the present application. Figure 3 As shown, the length L of the pole piece is equal to the sum of the spacing Ln between adjacent pole lugs on a target punched pole piece, the distance L1 between the MARK hole at the beginning of the pole piece and the first pole lug of the pole piece, and the distance L2 between the MARK hole at the end of the pole piece and the last pole lug of the pole piece. That is to say, for each pole lug of the target punched pole piece, the pole lug closest to the MARK hole at the beginning of the pole piece is used as the first pole lug, and the pole lug closest to the MARK hole at the end of the pole piece is used as the last pole lug. Among them, the end MARK hole of a target punched pole piece is used as the beginning MARK hole of the next target punched pole piece.

[0035] In the present application, the distance between adjacent tabs refers to the distance between the center lines of adjacent tabs, and the distance between a tab and a MARK hole refers to the distance between the center of the tab and the center line of the MARK hole.

[0036] That is, the die-cutting requirement is sent to the die-cutting machine, and the die-cutting machine can perform punching according to the die-cutting requirement. Furthermore, after the initial die-cutting requirement is sent to the die-cutting machine, the die-cutting machine performs punching according to the initial die-cutting requirement, and can determine the initial interval length corresponding to the punching according to the initial die-cutting requirement.

[0037] S102: When the initial die-cutting requirement changes, a current interval length corresponding to the current die-cutting requirement is determined according to the changed current die-cutting requirement.

[0038] The current interval length corresponding to the current die-cutting requirement is determined in the following manner: determine whether the spacing between adjacent target positions at the head end of the target punching pole piece in the current die-cutting requirement belongs to a preset distance interval; when the spacing between adjacent target positions at the head end belongs to the preset distance interval, the spacing between adjacent target positions at the head end is used as the current interval length; when the spacing between adjacent target positions at the head end does not belong to the preset distance interval, the spacing between adjacent target positions at the head end is superimposed on the spacing between adjacent target positions of the next group in sequence to obtain the spacing sum value, and the spacing sum value belonging to the preset distance interval is used as the current interval length.

[0039] That is to say, when the initial die-cutting requirement is changed to the current die-cutting requirement, first determine whether the distance between the first end MARK hole and the first pole ear of the target punching pole piece belongs to the preset distance interval; when the distance between the first end MARK hole and the first pole ear of the target punching pole piece belongs to the preset distance interval, directly use the distance between the first end MARK hole and the first pole ear as the current interval length; when the distance between the first end MARK hole and the first pole ear of the target punching pole piece does not belong to the preset distance interval, calculate the distance between the first end MARK hole and the first pole ear and the distance between the first pole ear and the second pole ear. The sum of the spacings is used as the first spacing sum to determine whether the first spacing sum belongs to the preset distance interval; when the first spacing sum belongs to the preset distance interval, the first spacing sum is used as the current interval length; when the first spacing sum does not belong to the preset distance interval, the sum of the first spacing sum and the spacing between the second pole ear and the third pole ear is calculated, and the sum is used as the second spacing sum, and whether the second spacing sum belongs to the preset distance interval is continued to be determined, and so on and so forth, until the spacing sum belongs to the preset distance interval, and the spacing sum that belongs to the preset distance interval is used as the current interval length.

[0040] Furthermore, the initial interval length corresponding to the initial die-cutting requirement is also determined by the above method.

[0041] The preset distance interval refers to the distance between the first punching knife and the second punching knife of the die-cutting machine and the distance between the lower limit and the upper limit. The preset distance interval is pre-set inside the die-cutting machine, and the moving stroke of the first punching knife itself determines the range of the preset distance interval.

[0042] S103: moving the first punching knife according to the comparison result between the initial interval length and the current interval length.

[0043] The moving of the first punching knife according to the comparison result of the initial interval length and the current interval length includes: if the current interval length is greater than the initial interval length, controlling the first punching knife to move in a direction away from the second punching knife; if the current interval length is less than the initial interval length, controlling the first punching knife to move in a direction close to the second punching knife.

[0044] Exemplarily, in the present application, the first punching knife is located on the side of the second punching knife pointing to the direction of movement of the pole piece. Furthermore, when the initial die-cutting requirement changes to the current die-cutting requirement, if it is determined that the current interval length is longer than the initial interval length, it is necessary to control the first punching knife to move away from the second punching knife; if it is determined that the current interval length is less than the initial interval length, it is necessary to control the first punching knife to move toward the second punching knife; if the current interval length is equal to the initial interval length, it is not necessary to control the first punching knife to move.

[0045] Exemplarily, the moving distance of the first punching knife is the absolute value of the difference between the current interval length and the initial interval length. That is, when the current interval length is greater than the initial interval length, the first punching knife is controlled to move away from the second punching knife, and the moving distance is the difference between the current interval length and the initial interval length; when the current interval length is less than the initial interval length, the first punching knife is controlled to move toward the second punching knife, and the moving distance is the difference between the initial interval length and the current interval length.

[0046] Specifically, the method further includes: based on the die-cutting requirements, controlling the second punching knife to punch the tabs on the pole piece in sequence, and controlling the first punching knife to punch the MARK hole after a preset number of tab punching intervals, wherein the MARK hole is used to separate adjacent target punched pole pieces.

[0047] That is, according to the die-cutting requirements, the pole ears are punched out in sequence on the wound initial pole piece, and after a preset number of pole ear punching times, the first punching knife is controlled to punch out a MARK hole on the pole piece, so that the MARK hole distinguishes two adjacent target punched pole pieces.

[0048] Specifically, the second punching knife is controlled to punch out the tabs on the pole piece in sequence in the following manner: the winding initial pole piece is controlled to move the spacing between adjacent target positions in sequence, and the second punching knife is controlled to move after each movement to punch out the tabs in sequence and record the number of tab punching times.

[0049] That is to say, according to the distance between adjacent target positions in the target punching pole piece corresponding to the die-cutting requirements, during the process of unfolding the initially wound pole piece along the preset pole piece movement direction, each time the pole piece moves the distance between adjacent target positions along the preset pole piece movement direction, the second punching knife is controlled to act so as to punch a pole ear on the pole piece.

[0050] For example, see Figure 4 , Figure 4 This is a schematic diagram of another target punching pole piece provided in an embodiment of the present application. Figure 4 As shown, if the die-cutting requirements corresponding to a target punched pole piece N1 include the spacing L11 between the head end MARK hole and the first pole ear M1, the spacing L1n between adjacent pole ears, and the spacing L12 between the last pole ear M3 and the end MARK hole, when the initial winding pole piece moves toward the preset pole piece movement direction, it is determined that the distance that the head end of the pole piece moves beyond the second punching knife B is at least L11, then the second punching knife B is controlled to punch out the pole ear M1 of the target punched pole piece N1 on the pole piece, and then the initial winding pole piece is controlled to move L1n along the preset pole piece movement direction, and then the second punching knife is controlled to punch out the pole ear M2 on the pole piece, and finally the initial winding pole piece is controlled to move L1n along the preset pole piece movement direction, and the second punching knife is controlled to punch out the pole ear M3 on the pole piece, so as to punch out each pole ear on the pole piece.

[0051] Among them, since the first punching knife is located on the side of the second punching knife pointing to the preset pole piece movement direction. Furthermore, before punching the first pole ear of the next target punching pole piece, the first punching knife can be controlled to punch the MARK hole between the current target punching pole piece and the next target punching pole piece; or while punching a pole ear on the next target punching pole piece, the first punching knife can be controlled to punch the MARK hole between the current target punching pole piece and the next target punching pole piece. Each time the punching action is performed, it is necessary to control the winding initial pole piece to stop moving so that the first punching knife and / or the second punching knife can complete the punching. In order to save punching time in the present application, the second punching knife is controlled to punch the pole ear while the first punching knife is controlled to punch the MARK hole.

[0052] The first punching knife is controlled to punch the MARK hole after a preset number of tab punching cuts in the following manner: the preset number of tab punching cuts is determined according to the current interval length; after controlling the second punching knife to punch the first tab of the target punched pole piece a preset number of tab punching cuts is performed, and then the first punching knife is controlled to punch the MARK hole at the head end of the target punched pole piece while controlling the second punching knife to punch the tab.

[0053] The number of tab intervals between the last tab in the current interval length and the first tab of the target punched tab is used as the preset number of tab punching times.

[0054] For example, Figure 4As shown, if the current interval length is the sum of the spacing L11 between the head end MARK hole and the first pole lug M1 and the spacing L1n between the first pole lug M1 and the next pole lug M2, then there is no other pole lug between the last pole lug M2 corresponding to the current interval length and the first pole lug M1 in the target punched pole piece, and the preset number of pole lug punching times is obtained, that is, the MARK hole needs to be punched at the same time as the next pole lug punching after the first pole lug is punched. In other words, after punching out the pole lug M1 of the target punched pole piece N1, the winding initial pole piece is controlled to move L1n along the preset pole piece movement direction, the second punching knife is controlled to punch out the pole lug M2 on the pole piece, and while punching out the pole lug M2, the first punching knife A is controlled to punch out the MARK hole, punching out the head end MARK hole of the target punched pole piece. Then control the initial winding pole piece to move L1n along the preset pole piece movement direction, control the second punching knife to punch out the pole ear M3 on the pole piece, and after the initial winding pole piece moves L12+L11 along the preset pole piece movement direction, control the second punching knife to punch out the first pole ear M1 on the next pole piece, and so on to achieve the punching of multiple target punching pole pieces.

[0055] Furthermore, the punching process of the current target punching pole piece and the next target punching pole piece under a die-cutting requirement is realized, and the punching is stopped when the number of target punching pole pieces under the die-cutting requirement reaches the preset number of pole pieces according to the preset number of pole pieces of the target punching pole pieces specified in the die-cutting requirement.

[0056] like Figure 4 As shown, after punching the last pole ear M3 of the current target punching pole piece N1, if the die-cutting requirement changes, the wound initial pole piece is controlled to move along the preset pole piece movement direction the distance L12 between the last pole ear M3 of the current target punching pole piece N1 and the end MARK hole, and then the wound initial pole piece is controlled to move along the preset pole piece movement direction the distance L21 between the first end MARK hole and the first pole ear M1 of the target punching pole piece N2 corresponding to the next die-cutting requirement, and then the second punching knife is controlled to punch out the first pole ear M1 of the target punching pole piece N2, so as to realize the pole piece punching after the die-cutting requirement changes.

[0057] For example, when the die-cutting machine controls the movement of the initial pole piece of the winding, the distance may be calculated incorrectly. In this case, a correction value can be manually entered to accurately achieve punching.

[0058] Furthermore, the present application can control the die-cutting machine to automatically control the punching of the tabs and MARK holes according to the spacing between adjacent target positions specified by the die-cutting requirements, and can save the initial die-cutting requirements to automatically modify the debugging direction and debugging distance of the first punching knife when the initial die-cutting requirements change, which can ensure that the operator can quickly confirm the debugging method, save debugging time and debugging materials, and allow novices to quickly understand the debugging method, which is simple and easy to operate.

[0059] Based on the same application concept, the embodiment of the present application also provides a pole piece punching device corresponding to the pole piece punching method provided in the above embodiment. Since the principle of solving the problem by the device in the embodiment of the present application is similar to the pole piece punching method in the above embodiment of the present application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0060] like Figure 5 As shown, Figure 5 A functional module diagram of a punching device for a pole piece provided in an embodiment of the present application. The punching device 10 for a pole piece includes: an acquisition module 101, used to acquire the initial interval length between the first punching knife and the second punching knife corresponding to the initial die-cutting requirement, the first punching knife is used to punch the MARK mark hole on the moving wound initial pole piece, and the second punching knife is used to punch the pole ear on the moving wound initial pole piece; a determination module 102, used to determine the current interval length corresponding to the current die-cutting requirement according to the changed current die-cutting requirement when the initial die-cutting requirement changes; an adjustment module 103, used to move the first punching knife according to the comparison result of the initial interval length and the current interval length.

[0061] Based on the same application concept, an embodiment of the present application provides a die-cutting machine, which is used to execute the steps of the electrode punching method described in any of the above embodiments. Specifically, the die-cutting machine can perform the following processing: obtain the initial interval length between the first punching knife and the second punching knife corresponding to the initial die-cutting requirement, the first punching knife is used to punch the MARK mark hole on the moving wound initial electrode, and the second punching knife is used to punch the pole ear on the moving wound initial electrode; when the initial die-cutting requirement changes, according to the changed current die-cutting requirement, determine the current interval length corresponding to the current die-cutting requirement; according to the comparison result of the initial interval length and the current interval length, move the first punching knife.

[0062] Based on the same application concept, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the pole piece punching method provided in the above embodiment are executed.

[0063] Specifically, the storage medium can be a general storage medium, such as a mobile disk, a hard disk, etc. When the computer program on the storage medium is run, the above-mentioned electrode punching method can be executed, and the initial spacing length between the punching knife for punching the MARK hole and the punching knife for punching the electrode ear can be determined by changing the previous die-cutting requirements, and after the die-cutting requirements are changed, the current spacing length between the two punching knives is determined, thereby adjusting the position of the first punching knife according to the comparison result between the initial spacing length and the current spacing length, solving the technical problem in the prior art that the distance between the first punching knife and the second punching knife needs to be manually adjusted, resulting in inaccurate adjustment, thereby achieving the technical effect of improving adjustment efficiency and reducing waste.

[0064] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, the specific working process of the system and device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. In the several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0065] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0066] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0067] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., various media that can store program codes.

[0068] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for punching a pole piece, characterized in that: The method comprises: Obtaining the initial interval length between the first punching knife and the second punching knife corresponding to the initial die-cutting requirement, wherein the first punching knife is used to punch the MARK mark hole on the moving wound initial pole piece, and the second punching knife is used to punch the pole ear on the moving wound initial pole piece; When the initial die-cutting requirement changes, the current interval length corresponding to the current die-cutting requirement is determined according to the changed current die-cutting requirement; The first punching knife is moved according to the comparison result between the initial interval length and the current interval length.

2. The method according to claim 1, characterized in that: The die-cutting requirements include the spacing between adjacent target positions in a target punched pole piece, wherein the target positions include the pole ear, the first end MARK hole and the end end MARK hole.

3. The method according to claim 2, characterized in that The current interval length corresponding to the current die-cutting requirement is determined by the following method: Determine whether the distance between adjacent target positions at the head end of the target punching pole piece in the current die-cutting requirement belongs to a preset distance interval; When the distance between adjacent target positions at the head end belongs to the preset distance interval, the distance between adjacent target positions at the head end is used as the current interval length; When the spacing between adjacent target positions at the first end does not belong to the preset distance interval, the spacing between adjacent target positions at the first end is sequentially superimposed with the spacing between adjacent target positions of the next group to obtain the spacing and value, and the spacing and value belonging to the preset distance interval is used as the current interval length.

4. The method according to claim 2, characterized in that: The method further comprises: Based on the die-cutting requirements, the second punching knife is controlled to punch the tabs on the pole piece in sequence, and the first punching knife is controlled to punch the MARK hole after a preset number of tab punching intervals. The MARK hole is used to separate adjacent target punched pole pieces.

5. The method according to claim 4, characterized in that The second punching knife is controlled to punch the pole ears on the pole piece in sequence by the following methods: The winding initial pole piece is controlled to move the intervals between adjacent target positions in sequence, and the second punching knife is controlled to move after each movement to punch out the pole tabs in sequence and record the number of pole tab punching times.

6. The method according to claim 4, characterized in that The first punching knife is located on one side of the second punching knife pointing to the moving direction of the winding initial pole piece, and the first punching knife is controlled to punch the MARK hole after a preset number of tab punching times in the following manner: Determining a preset number of tab punching times according to the current interval length; After controlling the second punching knife to punch the first tab of the target punched pole piece, a preset number of tab punching times are performed, and then the second punching knife is controlled to punch the tab while controlling the first punching knife to punch a MARK hole at the head end of the target punched pole piece.

7. The method according to claim 1, characterized in that The step of moving the first punching knife according to the comparison result between the initial interval length and the current interval length comprises: If the current interval length is greater than the initial interval length, controlling the first punching knife to move in a direction away from the second punching knife; If the current interval length is smaller than the initial interval length, the first punching knife is controlled to move toward a direction approaching the second punching knife.

8. A punching device for a pole piece, characterized in that: The device comprises: An acquisition module is used to acquire an initial interval length between a first punching knife and a second punching knife corresponding to an initial die-cutting requirement, wherein the first punching knife is used to punch a MARK mark hole on a moving wound initial pole piece, and the second punching knife is used to punch a pole ear on a moving wound initial pole piece; A determination module, used for determining the current interval length corresponding to the current die-cutting requirement according to the changed current die-cutting requirement when the initial die-cutting requirement changes; The adjustment module is used to move the first punching knife according to the comparison result between the initial interval length and the current interval length.

9. A die-cutting machine, characterized in that: The die-cutting machine is used to perform the steps of the pole piece punching method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the pole piece punching method according to any one of claims 1 to 7 are executed.

Images