CN113526066B - Pole piece machining deviation rectifying method, deviation rectifying device and computer readable storage medium - Google Patents
Pole piece machining deviation rectifying method, deviation rectifying device and computer readable storage medium Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application discloses a pole piece machining deviation rectifying method, a deviation rectifying device and a computer readable storage medium. The pole piece processing deviation rectifying method comprises the following steps: carrying out primary cutting on the current pole piece and forming a pole piece to be tested comprising a pole lug; collecting image information of a pole piece to be detected; obtaining a first cut-in depth, a second cut-in depth and the width of the pole piece according to the image information, wherein the first cut-in depth and the second cut-in depth are the widths of the coating areas in the corresponding pole lugs; and correcting the current pole piece according to the first cut-in depth, the second cut-in depth and the width of the pole piece. By collecting the image information of the pole piece to be detected, identifying the first cut-in depth, the second cut-in depth and the pole piece width according to the image information, correcting the current pole piece according to the detected parameter information and then continuing to cut, the deviation of the subsequently obtained pole lug is reduced, and the product quality is improved.
Description
Technical Field
The application relates to the technical field of pole piece processing, in particular to a pole piece processing deviation rectifying method, a deviation rectifying device and a computer readable storage medium.
Background
The tab of the battery is generally made by cutting the strip of pole pieces by laser or die. However, since the tape may be shifted during the transfer process, the cutting device may be deviated during the cutting process, resulting in a reduction in product quality.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art. Therefore, the deviation rectifying method for pole piece processing is provided, and can rectify the deviation of the next cutting according to the detection result of the pole piece to be detected, adjust the deviation generated in the cutting process and improve the quality of the product.
The application also provides a pole piece processing deviation rectifying device applying the pole piece processing deviation rectifying method.
According to the pole piece processing deviation rectifying method of the embodiment of the first aspect of the application, the current pole piece is primarily cut to form a pole piece to be detected comprising a pole lug; collecting image information of the pole piece to be detected; obtaining a first cut-in depth, a second cut-in depth and a pole piece width according to the image information, wherein the first cut-in depth and the second cut-in depth are both widths corresponding to the coating area in the pole lug; and correcting the current pole piece according to the first cut-in depth, the second cut-in depth and the pole piece width.
According to the pole piece processing deviation rectifying method provided by the embodiment of the application, the method at least has the following beneficial effects: by collecting the image information of the pole piece to be detected, identifying the first cut-in depth, the second cut-in depth and the pole piece width according to the image information, correcting the current pole piece according to the detected parameter information and then continuing to cut, the deviation of the subsequently obtained pole lug is reduced, and the product quality is improved.
According to some embodiments of the present application, the step of correcting the current pole piece according to the first cut-in depth, the second cut-in depth and the pole piece width specifically includes: respectively calculating a first cutting offset and a second cutting offset according to the first cutting depth, the second cutting depth and the pole piece width; and adjusting the cutting position according to the first cutting offset and the second cutting offset.
According to some embodiments of the application, the pole piece processing deviation rectifying method further comprises: obtaining a first cutting width and a second cutting width according to the image information; and correcting the current pole piece according to the first cutting width and the second cutting width.
According to the pole piece processing deviation correcting device of the second aspect embodiment of this application, include: the electrode tab cutting module is used for preliminarily cutting the current electrode piece and forming a to-be-detected electrode piece comprising an electrode tab; the image detection module is used for acquiring image information of the pole piece to be detected and obtaining a first cut-in depth, a second cut-in depth and a pole piece width according to the image information, wherein the first cut-in depth and the second cut-in depth are widths corresponding to the coating areas in the pole lugs; the controller is respectively connected with the image detection module and the pole lug cutting module, and the controller controls the pole lug cutting module to correct the current pole piece according to the first cut-in depth, the second cut-in depth and the pole piece width.
According to some embodiments of the present application, the tab cutting module comprises: the controller respectively calculates a first cutting offset of the first cutting part and a second cutting offset of the second cutting part according to the first cutting depth, the second cutting depth and the pole piece width, the first cutting part is used for adjusting a cutting position according to the first cutting offset, and the second cutting part is used for adjusting the cutting position according to the second cutting offset.
According to some embodiments of the present application, a distance between the first cutting portion and the second cutting portion is constant.
According to some embodiments of the application, pole piece processing deviation correcting device still includes: the image detection module is also used for obtaining a first cutting width and a second cutting width according to the image information, and the controller controls the pole piece cutting module to rectify the current pole piece.
According to some embodiments of the application, the controller calculates the slitting offset of the pole piece slitting module according to the first slitting width and the second slitting width, and the pole piece slitting module adjusts the slitting position according to the slitting offset.
According to some embodiments of the application, the pole piece slitting module comprises: the pole piece deviation rectifying device comprises a pole piece deviation rectifying part and a dividing cutter, wherein the dividing cutter is used for dividing the pole piece, the pole piece deviation rectifying part is connected with the controller, and the pole piece deviation rectifying part adjusts the cutting position of the current pole piece according to the cutting offset.
According to the computer-readable storage medium of the third aspect of the present application, computer-executable instructions are stored, and the computer-executable instructions are used for executing the pole piece machining deviation rectifying method of the first aspect of the present application.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The present application is further described with reference to the following figures and examples, in which:
FIG. 1 is a flowchart of a deviation rectifying method for pole piece processing according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a current pole piece according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a pole piece to be tested according to an embodiment of the present application;
FIG. 4 is a flowchart of a deviation rectifying method for pole piece processing according to another embodiment of the present application;
FIG. 5 is a schematic diagram of a pole piece to be tested according to another embodiment of the present application;
FIG. 6 is a block diagram of a deviation correcting device for pole piece processing according to an embodiment of the present disclosure;
fig. 7 is a schematic view of a tab cutting module according to an embodiment of the present application;
fig. 8 is a schematic view of a tab cutting module according to another embodiment of the present application;
FIG. 9 is a block diagram of a deviation correcting device for pole piece processing according to another embodiment of the present application;
reference numerals:
the system comprises a tab cutting module 100, an image detection module 200, a controller 300 and a pole piece slitting module 400;
a first cutting part 110, a second cutting part 120, a coating region 210;
servo motor 111, shaft coupling 112, lead screw 113, cutting head 114.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present number, and the above, below, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present application, unless otherwise specifically limited, terms such as set, installed, connected and the like should be understood broadly, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present application in combination with the specific contents of the technical solutions.
Some embodiments, the present application provides a pole piece processing deviation rectifying method, referring to fig. 1, including:
s110, performing primary cutting on the current pole piece and forming a pole piece to be tested comprising a pole lug;
s120, collecting image information of the pole piece to be detected;
s130, obtaining a first cut-in depth, a second cut-in depth and a pole piece width according to the image information;
and S140, correcting the current pole piece according to the first cut-in depth, the second cut-in depth and the pole piece width.
In a specific example, the deviation rectifying method for pole piece processing provided by the application is applied to a pole piece after a coating process. Referring to fig. 2, a schematic diagram of a pole piece material strip subjected to a coating process, that is, a current pole piece, is obtained by continuously coating a slurry on the pole piece material strip to form a coating area 210 on a middle area of the pole piece material strip. When the front electrode sheet is a cathode electrode sheet, the coating region 210 may be formed by only one slurry coating; when the current electrode sheet is an anode electrode sheet, the coating area 210 may be formed by first coating a layer of slurry on the middle area of the electrode sheet material tape, and then coating a layer of AT9 on a partial area between the slurry and the edge of the electrode sheet material tape near the slurry side to form the coating area 210 together, that is, the areas coated with the slurry are all the coating areas 210.
The current pole piece is primarily cut to form a pole piece material belt with a pole lug as shown in fig. 3, namely the pole piece to be tested. It will be appreciated that the movement and machine direction of the strip of pole pieces in figure 3 is a transverse movement, and therefore the distribution of the tabs is correspondingly arranged to be transverse. In some other embodiments, the coating regions 210 on the pole piece material strip may also be rectangular coating regions 210 distributed at intervals, and the corresponding distribution directions of the tabs may also be distributed along the longitudinal direction, only the cutting direction when cutting the tabs needs to be changed correspondingly.
Generally, the color difference between the color of the coating region 210 and the substrate of the electrode plate is large, so that the collected image information can be clearly distinguished and processed by collecting the image information of the electrode plate to be measured.
Referring to fig. 3, the first cut-in depth, the second cut-in depth and the pole piece width of the pole lug can be identified according to the acquired image information, i.e., H1, H2 and W1 in the figure respectively. In a specific example, under normal conditions, when cutting the current pole piece material strap, a part of the edge position of the coating area 210 can be cut off, so that the coating area 210 can extend out of a part of the pole lug, and the width information of the coating area in the pole lug at the corresponding pole lug position can be obtained by identifying the bottom edge of the pole lug in the image information and the color of the coating area 210, namely the cutting-in depth of the corresponding pole lug. This application is cut into the degree of depth for being located the utmost point ear of pole piece material area bilateral symmetry respectively from the first degree of depth of cut and the second that the discernment obtained in image information, and it can be understood that, the position of two utmost point ears of gathering also can be asymmetric, only need be located the both sides in pole piece material area respectively can.
The size of the offset generated in the preliminary cutting process can be obtained by judging the sizes of the first cut-in depth, the second cut-in depth and the width of the pole piece, so that the current pole piece is corrected, specifically, the cutting position in the process of continuously cutting the pole piece material belt is changed, the error in the process of cutting the pole piece is reduced, and the cutting quality of the pole lug is improved. It can be understood that after the deviation correction, the uncut current pole piece can be continuously cut, a new pole piece to be detected can be generated after the cutting is continuously performed, and the new first cut-in depth, the second cut-in depth and the pole piece width are obtained by acquiring the image information of the new pole piece to be detected and processing the image information, so that the deviation correction is continuously performed on the subsequent pole lug cutting process, and a closed loop is formed. It can be understood that the new first cut-in depth and the second cut-in depth are the same in size and meet a preset threshold value, and the tab cutting effect is the best under the condition that the new pole piece width meets the preset threshold value.
According to the pole piece processing deviation rectifying method, the cutting position during continuous cutting is adjusted according to the detected first cut-in depth, the second cut-in depth and the pole piece width of the pole piece to be detected, so that the first cut-in depth and the second cut-in depth of the pole piece to be cut after deviation rectification are equal, the actual width is equal to the set width, the deviation of the pole lug obtained by subsequent cutting is reduced, and the product quality is improved.
In some embodiments, the step of performing deviation rectification on the current pole piece according to the first cut-in depth, the second cut-in depth and the width of the pole piece specifically includes: respectively calculating a first cutting offset and a second cutting offset according to the first cutting depth, the second cutting depth and the width of the pole piece; and adjusting the cutting position according to the first cutting offset and the second cutting offset.
In a specific example, when the preliminary cutting is performed, the cutting is performed by two independently controlled cutting devices. At this time, the set width is represented as W, the first cut depth obtained by actual detection is represented as H1, the second cut depth is represented as H2, the pole piece width is represented as W1, and the difference Δ W = W1-W between the actual width and the set width at this time, so that the first cutting offset Δ H1= Δ W/2- (H1-H2)/2, and the second cutting offset Δ H2= Δ W/2+ (H1-H2)/2, respectively, are corrected by the cutting device, so that the first cut depth and the second cut depth of the pole piece cut after correction can be equal, and the actual width is equal to the set width.
In one embodiment, if the process flow detects that the width of the coating area 210 on the pole piece conforms to the set width, the required depth of cut is a fixed value, the corresponding set depth of cut is recorded as H, the first cutting offset Δ H1= H1-H, and the second cutting offset Δ H2= H2-H, and by this control method, the first depth of cut of the pole piece cut after deviation correction is equal to the second depth of cut, and the actual width is equal to the set width.
In some embodiments, referring to fig. 4, the deviation rectifying method for pole piece processing further includes:
s150, obtaining a first cutting width and a second cutting width according to the image information;
and S160, rectifying the deviation of the current pole piece according to the first cutting width and the second cutting width.
The pole piece processing deviation rectifying method is further used for rectifying deviation of the cut pole pieces, and the current pole piece with the pole lugs is cut into two parts, so that the subsequent process flow is convenient to manufacture. Referring to fig. 5, the first cutting width detected according to the image information is recorded as L1, the second cutting width is recorded as L2, the width W1 of the pole piece is = L1+ L2, and at this time, the cutting offset Δ L = (L1-L2)/2, and the cutting position is adjusted by the cutting offset Δ L obtained through calculation, so that the new first cutting width of the pole piece cut after deviation correction is equal to the second cutting width, and the effect of equally dividing the pole piece is achieved.
In one embodiment, under the condition that the current pole piece is subjected to tab deviation correction, the detected width W1 of the pole piece is the same as the set width W, the slitting width obtained by slitting is a fixed value and is recorded as the set slitting width L, and the slitting offset Δ L = L1-L or Δ L = L2-L is opposite in direction. It can be understood that the image information collected in the present application is the image information of the pole piece to be measured including the pole lug and the pole piece after being cut, and the pole piece processing deviation correcting method in the embodiment of the present application is to correct the pole lug first, and then correct the deviation in the pole piece cutting process. In some other embodiments, both deskewing processes may be performed simultaneously.
Some embodiments, referring to fig. 6, the present application further provides a pole piece processing deviation correcting device, including: the electrode tab cutting module 100, the image detection module 200 and the controller 300, the electrode tab cutting module 100 is used for primarily cutting a current electrode tab and forming an electrode tab to be detected including an electrode tab, the image detection module 200 is used for collecting image information of the electrode tab to be detected and obtaining a first cut-in depth, a second cut-in depth and an electrode tab width according to the image information, the first cut-in depth and the second cut-in depth are widths corresponding to a coating area 210 in the electrode tab, the controller 300 is respectively connected with the image detection module 200 and the electrode tab cutting module 100, and the controller 300 controls the electrode tab cutting module 100 to rectify the current electrode tab according to the first cut-in depth, the second cut-in depth and the electrode tab width.
Some embodiments, referring to fig. 7, the tab cutting module 100 includes: the controller 300 calculates a first cutting offset of the first cutting portion 110 and a second cutting offset of the second cutting portion 120 according to the first cutting depth, the second cutting depth and the pole piece width, wherein the first cutting portion 110 is used for adjusting the cutting position according to the first cutting offset, and the second cutting portion 120 is used for adjusting the cutting position according to the second cutting offset.
Specifically, the first cutting portion 110 is composed of a servo motor 111, a coupler 112, a lead screw 113, and a cutting head 114, the servo motor 111 receives a first cutting offset sent by the controller 300, and the coupler 112 controls the lead screw 113 to rotate, so as to adjust the position of the cutting head 114, and thus adjust the cutting position of the pole piece. It will be appreciated that the cutting head 114 may be a knife die or a laser head, and that the first cutting offset is adjusted to the offset position of the entire cutting head 114 during cutting. The second cutting part 120 is disposed in the same manner as the first cutting part 110. The specific calculation process of the first cutting offset and the second cutting offset is the same as that in the pole piece processing deviation rectifying method, and is not repeated here.
In some embodiments, the spacing between the first cutting portion 110 and the second cutting portion 120 is constant. Referring to fig. 8, which is a schematic view of a tab cutting module 100 according to another embodiment of the present disclosure, two cutting heads 114 are disposed on the same lead screw 113 at a fixed interval, and a controller 300 controls the two cutting heads 114 to move in the same direction and at the same distance. Since the pitch of the cutting heads 114 is fixed, the pitch of the cutting heads 114 is set to be the same as the set width W, in which case the detected pole piece width W1= W, when the first cutting offset Δ H1 is the same as the second cutting offset Δ H2, and Δ H1= Δ H2= (H1-H2)/2. Through the arrangement, the first cut-in depth and the second cut-in depth of the pole piece cut after deviation rectification can be equal
Some embodiments, referring to fig. 9, the deviation rectifying device for pole piece processing further includes: the pole piece cutting module 400 is connected with the controller 300, the pole piece cutting module 400 is used for cutting the current pole piece, the image detection module 200 is further used for obtaining a first cutting width and a second cutting width according to the image information, and the controller 300 controls the pole piece cutting module 400 to continuously correct the current pole piece according to the first cutting width and the second cutting width.
In some embodiments, the controller 300 calculates the slitting offset of the pole piece slitting module 400 according to the first slitting width and the second slitting width, and the pole piece slitting module 400 adjusts the slitting position according to the slitting offset. The controller 300 calculates the slitting offset, and controls the pole piece slitting module 400 according to the slitting offset to adjust the slitting position, and the calculation of the slitting offset is the same as that in the above embodiment, and is not described here any more.
In some embodiments, pole piece slitting module 400 comprises: the pole piece deviation rectifying device comprises a pole piece deviation rectifying part and a dividing cutter (not shown in the figure), wherein the dividing cutter is used for dividing and cutting a pole piece, the pole piece deviation rectifying part is connected with the controller 300, and the pole piece deviation rectifying part adjusts the cutting position of the current pole piece according to the cutting offset. The pole piece deviation rectifying part is used for adjusting the longitudinal position of the pole piece on the conveyor belt, and the position of the slitting knife is fixed, so that the slitting position of the current pole piece is adjusted. In some other embodiments, the slitting position of the current pole piece can also be adjusted by adjusting the position of the slitting knife.
In some embodiments, the present application further provides a computer-readable storage medium, which stores computer-executable instructions, where the computer-executable instructions are used to execute the deviation rectifying method for pole piece processing in the foregoing embodiments.
In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present application. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
Claims (8)
1. The pole piece processing deviation rectifying method is characterized by comprising the following steps:
carrying out primary cutting on the current pole piece and forming a pole piece to be tested comprising a pole lug;
collecting image information of the pole piece to be detected;
obtaining a first cut-in depth H1, a second cut-in depth H2 and a pole piece width W1 according to the image information, wherein the first cut-in depth H1 and the second cut-in depth H2 are both widths corresponding to the coating areas in the pole lugs;
respectively calculating a first cutting offset delta H1 and a second cutting offset delta H2 according to the first cutting depth H1, the second cutting depth H2 and the pole piece width W1, wherein the first cutting offset is delta H1= delta W/2- (H1-H2)/2, the second cutting offset is delta H2= delta W/2+ (H1-H2)/2, and delta W represents the difference between the pole piece width W1 and the set width W, namely delta W = W1-W;
and adjusting the cutting position according to the first cutting offset delta H1 and the second cutting offset delta H2, and rectifying deviation in the subsequent tab cutting process, thereby forming a closed loop.
2. The pole piece machining deviation rectifying method according to claim 1, further comprising:
obtaining a first cutting width L1 and a second cutting width L2 according to the image information;
and correcting the current pole piece according to the first cutting width L1 and the second cutting width L2.
3. Pole piece processing deviation correcting device, its characterized in that includes:
the tab cutting module is used for carrying out primary cutting on the current pole piece and forming a pole piece to be tested comprising a tab;
the image detection module is used for acquiring image information of the pole piece to be detected and obtaining a first cut-in depth H1, a second cut-in depth H2 and a pole piece width W1 according to the image information, and the first cut-in depth H1 and the second cut-in depth H2 are widths corresponding to the coating area in the pole lug;
the controller is respectively connected with the image detection module and the pole lug cutting module, and controls the pole lug cutting module to correct the current pole piece according to the first cut-in depth H1, the second cut-in depth H2 and the pole piece width W1, so that a closed loop is formed;
wherein, utmost point ear cutting module includes: the controller respectively calculates a first cutting offset amount delta H1 of the first cutting part and a second cutting offset amount delta H2 of the second cutting part according to the first cutting depth H1, the second cutting depth H2 and the pole piece width W1, the first cutting part is used for adjusting a cutting position according to the first cutting offset amount delta H1, the second cutting part is used for adjusting the cutting position according to the second cutting offset amount delta H2, the first cutting offset amount is delta H1= delta W/2- (H1-H2)/2, the second cutting offset amount is delta H2= delta W/2+ (H1-H2)/2, and delta W represents a difference value between the pole piece width W1 and a set width W, namely delta W = W1-W.
4. The pole piece machining deviation correcting device of claim 3, wherein a distance between the first cutting portion and the second cutting portion is constant.
5. The pole piece machining deviation correcting device of any one of claims 3 to 4, wherein the pole piece machining deviation correcting device further comprises: the pole piece cutting module is connected with the controller, the pole piece cutting module is used for cutting the current pole piece, the image detection module is further used for obtaining a first cutting width L1 and a second cutting width L2 according to the image information, and the controller is used for controlling the first cutting width L1 and the second cutting width L2 to rectify the deviation of the current pole piece by the pole piece cutting module.
6. The pole piece processing deviation correcting device of claim 5, wherein the controller calculates the slitting offset of the pole piece slitting module according to the first slitting width L1 and the second slitting width L2, and the pole piece slitting module adjusts the slitting position according to the slitting offset.
7. The pole piece processing deviation correcting device of claim 6, wherein the pole piece slitting module comprises: the pole piece deviation rectifying device comprises a pole piece deviation rectifying part and a dividing cutter, wherein the dividing cutter is used for dividing the pole piece, the pole piece deviation rectifying part is connected with the controller, and the pole piece deviation rectifying part adjusts the cutting position of the current pole piece according to the cutting offset.
8. The computer-readable storage medium stores computer-executable instructions, and is characterized in that the computer-executable instructions are used for executing the pole piece machining deviation rectifying method according to any one of claims 1 to 2.
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| CN114905337B (en) * | 2022-04-29 | 2023-08-22 | 广东利元亨智能装备股份有限公司 | Pole piece cutting control method, device, controller and storage medium |
| CN117232425B (en) * | 2023-11-14 | 2024-02-13 | 钛玛科（北京）工业科技有限公司 | Method, device, equipment and medium for measuring cutting depth of anode material of lithium battery |
| CN117733374B (en) * | 2024-02-07 | 2024-05-10 | 蔚来电池科技(安徽)有限公司 | Pole piece cutting equipment and control method thereof |
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