A battery cell tab segmentation method, device, apparatus and storage medium

Abstract

The application discloses a battery cell tab segmentation method and device, equipment and storage medium, and relates to the technical field of batteries. The method comprises the following steps: determining the tab root of a battery cell tab according to each collected image corresponding to the battery cell tab, and positioning the position of the tab according to the tab root; determining a target region according to the position of the tab, and performing recognition hole matching in the target region; if a recognition hole is matched, determining the position of the recognition hole according to the matching result; and determining the segmentation position of the battery cell tab according to the position of the recognition hole according to a preset segmentation rule, so that a plurality of target battery cell tab segments are obtained after the battery cell tab is segmented according to the segmentation position. The position of the tab is determined by recognizing the root of the tab, which can avoid the problem of inaccurate positioning caused by tab buckling or folding. Then, the punching position of the recognition hole is positioned according to the position of the tab, and the segmentation of the battery cell tab is performed according to the recognition hole, thereby improving the accuracy of the segmentation of the battery cell tab.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery cell tab segmentation method, device, equipment and storage medium. BACKGROUND

[0002] In recent years, the new energy industry has developed rapidly. As a clean and efficient new energy, power battery is widely used in various industries such as automobiles, ships, forklifts and energy storage due to its high single battery working voltage, high specific energy, long cycle life, no pollution and many other advantages.

[0003] The power battery is mainly composed of a cover plate, a battery cell and auxiliary components. The battery cell is the core component of the power battery, which is mainly composed of a battery cell tab and a separator combined in a certain rule. During the production and processing of the battery cell tab, the battery cell tab needs to be accurately cut to form a target battery cell tab segment, and each target battery cell tab segment is used to wind to form each battery cell. How to improve the accuracy of battery cell tab segmentation is a problem to be solved at present. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a battery cell tab segmentation method, device, equipment and medium, which can improve the accuracy of battery cell tab segmentation. The specific scheme is as follows:

[0005] In the first aspect, the present application discloses a battery cell tab segmentation method, comprising:

[0006] According to each collected image corresponding to the battery cell tab, the tab root of the battery cell tab is determined, and the position of the tab is located according to the tab root;

[0007] According to the position of the tab, a target area is determined, and recognition hole matching is performed in the target area. If the recognition hole is matched, the position of the recognition hole is determined according to the matching result;

[0008] According to the position of the recognition hole, the segmentation position of the battery cell tab is determined according to the preset segmentation rule, so that a plurality of target battery cell tab segments are obtained after the battery cell tab is segmented according to the segmentation position.

[0009] Optionally, the tab root of the battery cell tab is determined according to each collected image corresponding to the battery cell tab, comprising:

[0010] The collected image corresponding to the battery cell tab is subjected to straight line detection to determine the tab edge of the battery cell tab;

[0011] The tab root is determined in the left and right adjacent areas of the tab edge by connected component analysis method, and the position of the tab is located according to the tab root.

[0012] Optionally, the determining the tab root of the electrode tab according to each collected image corresponding to the electrode tab comprises:

[0013] splicing the current collected image with a previous collected image, and determining a target detection region from the spliced image according to the positions of the located tabs in the previous collected image and the standard distance between the tabs;

[0014] determining the tab root in the target detection region by a connected component analysis method, and locating the position of the tab according to the tab root.

[0015] Optionally, the determining the target region according to the position of the tab and performing the identification hole matching in the target region, and if the identification hole is matched, determining the position of the identification hole according to the matching result comprises:

[0016] determining a first target region on the film area of the electrode tab according to the position of the tab and a first preset position relationship;

[0017] performing the identification hole matching in the first target region by a template matching method, and determining the position of the identification hole formed by punching on the electrode tab according to the matching result.

[0018] Optionally, the determining the target region according to the position of the tab and performing the identification hole matching in the target region, and if the identification hole is matched, determining the position of the identification hole according to the matching result comprises:

[0019] determining a second target region on the tab according to the position of the tab and a second preset position relationship;

[0020] performing the identification hole matching in the second target region by a template matching method and a connected component analysis method, and determining the position of the identification hole formed by punching on the electrode tab according to the matching result.

[0021] Optionally, after the identification hole matching in the target region, the method further comprises:

[0022] if the identification hole is not matched, determining the segmentation position of the electrode tab according to the distance between the tabs in the electrode tab, so as to segment the electrode tab according to the segmentation position to obtain a plurality of target electrode tab segments.

[0023] Optionally, the determining the segmentation position of the electrode tab according to the distance between the tabs in the electrode tab comprises:

[0024] sequentially determining the distance between each tab on the electrode tab to obtain a measured interval distance between each tab;

[0025] acquire a reference interval between reference tabs; the reference tabs include a first target number of tabs on a division line in the electrode sheet of the battery cell and a second target number of tabs below the division line, and the division line is a division line between target electrode sheet segments that have been divided in the electrode sheet of the battery cell;

[0026] compare the measured interval with the reference interval, and determine a division position according to a comparison result.

[0027] In a second aspect, the present application discloses a battery cell electrode sheet division device, comprising:

[0028] a tab position determination module configured to determine a tab root of the battery cell electrode sheet according to each of the collected images corresponding to the battery cell electrode sheet, and determine a position of the tab according to the tab root;

[0029] an identification hole matching module configured to determine a target region according to the position of the tab, and perform identification hole matching in the target region, and if an identification hole is matched, determine a position of the identification hole according to a matching result;

[0030] an electrode sheet division module configured to determine a division position of the battery cell electrode sheet according to the position of the identification hole according to a preset division rule, so as to divide the battery cell electrode sheet according to the division position to obtain a plurality of target electrode sheet segments.

[0031] In a third aspect, the present application discloses an electronic device, comprising:

[0032] a memory configured to save a computer program;

[0033] a processor configured to execute the computer program to implement the battery cell electrode sheet division method.

[0034] In a fourth aspect, the present application discloses a computer readable storage medium configured to store a computer program; wherein the computer program is executed by a processor to implement the battery cell electrode sheet division method.

[0035] In the present application, the root of the tab of the battery cell pole piece is determined according to each acquisition image corresponding to the battery cell pole piece, and the position of the tab is located according to the root of the tab; the target area is determined according to the position of the tab, and the recognition hole matching is performed in the target area, if the recognition hole is matched, the position of the recognition hole is determined according to the matching result; the segmentation position of the battery cell pole piece is determined according to the position of the recognition hole according to the preset segmentation rule, so as to obtain a plurality of target battery cell pole piece segments after the battery cell pole piece is segmented according to the segmentation position. It can be seen that the position of the tab is determined by recognizing the root of the tab, which can avoid the problem of inaccurate positioning caused by the tab being raised or folded, and then the position of the recognition hole is located according to the position of the tab, which improves the accuracy of the recognition hole positioning, and then the battery cell pole piece is segmented according to the recognition hole, which improves the accuracy of the battery cell pole piece segmentation. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0037] Figure 1 A flow chart of a battery cell pole piece segmentation method provided by the present application is provided.

[0038] Figure 2 A specific battery cell pole piece edge detection schematic diagram is provided for the present application.

[0039] Figure 3 A specific battery cell pole piece tab positioning schematic diagram is provided for the present application.

[0040] Figure 4 A specific battery cell pole piece recognition hole marking schematic diagram is provided for the present application.

[0041] Figure 5 Another specific battery cell pole piece recognition hole marking schematic diagram is provided for the present application.

[0042] Figure 6 A specific battery cell pole piece segmentation schematic diagram is provided for the present application.

[0043] Figure 7 A battery cell pole piece segmentation device structure schematic diagram is provided for the present application.

[0044] Figure 8 A structure diagram of an electronic device is provided for the present application. DETAILED DESCRIPTION

[0045] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0046] In the prior art, during the production and processing of the cell tab, the cell tab needs to be accurately cut to form a target cell tab segment, and each target cell tab segment is used to wind to form each cell. In order to improve the accuracy of the cell tab segmentation, the present application discloses a cell tab segmentation method.

[0047] The embodiments of the present application disclose a cell tab segmentation method, referring to Figure 1 The method can include the following steps:

[0048] Step S11: determining the tab root of the cell tab according to each acquisition image corresponding to the cell tab, and positioning the position of the tab according to the tab root.

[0049] In the embodiments, first, the tab root of the cell tab is determined according to each acquisition image corresponding to the cell tab, and the position of the tab is positioned according to the tab root. It can be understood that the image of each tab position in the whole cell tab is recognized by continuously acquiring the image of each segment of the whole cell tab.

[0050] In the embodiments, the tab root of the cell tab is determined according to each acquisition image corresponding to the cell tab, which can include: performing straight line detection on the acquisition image corresponding to the cell tab to determine the edge of the cell tab; determining the tab root in the left and right adjacent regions of the edge through the connected domain analysis method, and positioning the position of the tab according to the tab root. That is, as shown in Figure 2 As shown in the figure, first, the edge of the cell tab, i.e. the edge of the cell tab, is positioned, and then the tab root is positioned according to the edge. Specifically, the edge of the cell tab can be recognized by straight line detection, after the edge is determined, the tab root is detected in the region left and right offset by a preset distance from the edge through the connected domain analysis method, and finally the position of the tab is positioned according to the tab root. Figure 3As shown, according to the position of the left edge of the pole piece offset by about 1mm, the root of the tab is determined by the blob analysis method, of course, for the right edge of the pole, the root of the tab can be determined by offsetting about 1mm to the right. It can be understood that since the tab is usually very thin metal, it may be warped or bent, and the root of the tab is the most stable part of the tab, so positioning the root of the tab to position the tab improves the accuracy of tab positioning.

[0051] The straight line detection algorithm can be a Hough straight line detection algorithm, a Radon straight line detection algorithm, or a Freeman straight line detection algorithm, etc. Taking the Hough straight line detection algorithm as an example, Hough transform is a feature extraction algorithm in image processing, widely used in image analysis, computer vision, and digital image processing. Hough transform is one of the basic methods for recognizing geometric shapes from images. It can convert the detection of overall characteristics into the detection of local characteristics, such as straight lines, ellipses, circles, and arcs. The main advantage of Hough transform is that it can tolerate gaps in feature boundary descriptions and is relatively unaffected by image noise. Since existing straight line detection algorithms for images are very mature, they will not be described in detail here.

[0052] The blob analysis method, i.e. the blob analysis method, in computer vision, blob refers to a connected region in an image. Blob analysis is the extraction and labeling of connected regions in a binary image after foreground / background separation. Each blob labeled represents a foreground object, and then some related features of the blob can be calculated, such as area. The core idea of the blob algorithm is to find the range of gray level change in a region and determine its size, shape, and area. As shown, according to the characteristics of the pole piece, the tab as a part protruding from the edge of the pole piece, the root of the tab can be determined by offsetting about 1mm to the left and right of the edge of the pole piece through the blob analysis method. Since existing blob analysis methods for images are very mature, they will not be described in detail here.

[0053] In this embodiment, the determination of the tab root of the electrode tab of the battery cell from each collected image corresponding to the electrode tab can include: splicing the current collected image with the last collected image, and determining a target detection region from the spliced image according to the position of the tab that has been located in the last collected image and the standard distance between the tabs; determining the tab root in the target detection region through a connected domain analysis method, and locating the position of the tab according to the tab root. It can be understood that, since the collection of the image corresponding to the electrode tab can cause incomplete collection of a tab, that is, the tab is divided into two parts and appears on two images, to prevent the tab from being missed due to this situation, the current collected image is spliced with the last collected image in this embodiment to obtain a spliced image, and then the target detection region is determined from the spliced image according to the position of the tab that has been located in the last collected image and the standard distance between the tabs, and finally the tab root is determined in the target detection region through a connected domain analysis method, and the position of the tab is located according to the tab root.

[0054] Step S12: determining a target region according to the position of the tab, and performing recognition hole matching in the target region, if the recognition hole is matched, determining the position of the recognition hole according to the matching result.

[0055] In this embodiment, the position of the tab is located, and then the target region is determined according to the position of the tab, and the position of the recognition hole is determined in the target region through matching. That is, the region of the recognition hole formed by punching on the electrode tab of the battery cell is determined according to the preconfigured position relationship, the position relationship is the position relationship between the position of the tab and the position of the target region, and the position of the recognition hole (Mark hole) is determined in the region through matching.

[0056] In this embodiment, the determination of the target region according to the position of the tab and the determination of the position of the recognition hole and the marking of the recognition hole in the target region can include: determining a first target region on the film area of the electrode tab according to the position of the tab and a first preset position relationship; performing recognition hole matching in the first target region through a template matching method, and determining the position of the recognition hole formed by punching on the electrode tab according to the matching result. In this embodiment, in the first case, the position of the recognition hole punched on the film area of the electrode tab is determined as the first target region at a position with a preset distance below the tab and a preset size, and then a template image containing the recognition hole and having a preset size is used for matching to determine the position of the recognition hole in the first target region. Figure 4

[0057] ​In this embodiment, the target region is determined according to the position of the tab, the position of the identification hole is determined in the target region, and the identification hole is marked. It can include: determining a second target region on the tab according to the position of the tab and the second preset position relationship; identifying the hole matching in the second target region by template matching method and connected domain analysis method, and determining the position of the identification hole formed by punching on the tab of the battery cell according to the matching result. In this embodiment, the second case is for the identification hole punched on the tab, as shown in Figure 5 The top corner position of the tab is used as the second target region, and a template image containing the identification hole and having a preset size is used for matching to determine the position of the identification hole in the second target region. That is, since the identification hole can be an identification hole formed by cutting a recess at the top of the tab, or an identification hole formed by cutting a recess at the edge of the tab, this embodiment uses a pre-set position relationship to search for the two cases. Generally, the identification hole of the anode battery tab is punched on the tab, and the identification hole of the cathode battery tab is punched on the tab.

[0058] Step S13: determining the segmentation position of the battery tab according to the position of the identification hole according to a preset segmentation rule, so as to segment the battery tab according to the segmentation position to obtain a plurality of target battery tab segments.

[0059] In this embodiment, the segmentation position of the battery tab is determined according to the position of the identification hole after punching according to a preset segmentation rule, so as to segment the battery tab according to the segmentation position to obtain a plurality of target battery tab segments. For example, for the battery tab with the identification hole punched on the tab film area, for example Figure 4 The center of the identification hole is used as the division line of the target battery tab segment; for the battery tab with the identification hole punched on the tab, for example Figure 5 When the identification hole is on the tab, the division line is at a fixed position between the En tabs and the E1 tabs, and the E1 tabs contain the identification hole.

[0060] In this embodiment, after the identification hole matching in the target region, it can also include: if no identification hole is matched, determining the segmentation position of the battery tab according to the distance between the tabs in the battery tab, so as to segment the battery tab according to the segmentation position to obtain a plurality of target battery tab segments. That is, if the identification hole is not punched through to cause the identification hole to be unable to be identified, the battery tab is segmented according to the distance between the tabs.

[0061] In this embodiment, the determination of the segmentation position of the electrode sheet according to the distance between the tabs in the electrode sheet can include: sequentially determining the distance between each pair of tabs on the electrode sheet to obtain a measured interval between each pair of tabs; obtaining a reference interval between reference tabs; the reference tabs include a first target number of tabs above a segmentation line and a second target number of tabs below the segmentation line in the electrode sheet, the segmentation line is a segmentation line between the target electrode sheet segments that have been segmented in the electrode sheet; comparing the measured interval with the reference interval, and determining the segmentation position according to the comparison result. For example Figure 6 As shown, the tabs on the electrode sheet are sequentially sorted, the interval between each pair of tabs in the whole roll is determined, that is, the distance between each pair of adjacent tabs is determined as a measured distance and stored; then, the reference tab interval is determined; specifically, the reference tabs are first selected, the reference tabs are selected as the last two or three tabs of the last target electrode sheet segment and the first tab of the next target electrode sheet segment, and then the actual interval between them is measured as the reference interval, and the target electrode sheet segment is segmented according to the reference interval of the reference tab. Specifically, the reference interval is compared with the stored measured interval, and if it is consistent or within the allowable error range, the cutting is performed. For example Figure 6 As shown, the measured interval D1 between En-1 and En and the measured interval D2 between En and E1 are determined before cutting, the corresponding reference tabs are selected, and it is assumed that the last two tabs of the last target electrode sheet segment and the first tab of the next target electrode sheet segment are selected, and the reference intervals of these reference tabs are d1 and d2 in turn. Compare D1, d1, and D2, d2, and if they are consistent or within the allowable error range, cut between En and E1.

[0062] As can be seen from the above, in this embodiment, the tab root of the electrode sheet is determined according to each corresponding collected image of the electrode sheet, and the position of the tab is located according to the tab root; the target region is determined according to the position of the tab, and the recognition hole matching is performed in the target region, if the recognition hole is matched, the position of the recognition hole is determined according to the matching result; the segmentation position of the electrode sheet is determined according to the position of the recognition hole according to the preset segmentation rule, so that a plurality of target electrode sheet segments are obtained after the electrode sheet is segmented according to the segmentation position. It can be seen that the position of the tab is determined by identifying the root of the tab, which can avoid the problem of inaccurate positioning caused by tab buckling or folding, and then the punching position of the recognition hole is located according to the position of the tab, which improves the accuracy of the position marking of the recognition hole, and then the electrode sheet is segmented according to the recognition hole, which improves the accuracy of the electrode sheet segmentation.

[0063] Correspondingly, the application also discloses an electrode sheet segmentation device, as shown in Figure 7 The device comprises:

[0064] The tab position determination module 11 is configured to determine the tab root of the battery tab according to each of the collection images corresponding to the battery tab, and determine the position of the tab according to the tab root;

[0065] The recognition hole matching module 12 is configured to determine a target area according to the position of the tab, and perform recognition hole matching in the target area, and if a recognition hole is matched, determine the position of the recognition hole according to the matching result;

[0066] The tab segmentation module 13 is configured to determine the segmentation position of the battery tab according to the position of the recognition hole according to a preset segmentation rule, so as to obtain a plurality of target battery tab segments after the battery tab is segmented according to the segmentation position.

[0067] As can be seen from the above, the tab root of the battery tab is determined according to each of the collection images corresponding to the battery tab, and the position of the tab is determined according to the tab root; the target area is determined according to the position of the tab, and the recognition hole matching is performed in the target area, and if the recognition hole is matched, the position of the recognition hole is determined according to the matching result; the segmentation position of the battery tab is determined according to the position of the recognition hole according to a preset segmentation rule, so as to obtain a plurality of target battery tab segments after the battery tab is segmented according to the segmentation position. It can be seen that the position of the tab is determined by recognizing the root of the tab, which can avoid the problem of inaccurate positioning caused by the tab being raised or folded, and then the position of the recognition hole is positioned according to the position of the tab, which improves the accuracy of the position marking of the recognition hole, and then the battery tab is segmented according to the recognition hole, which improves the accuracy of the battery tab segmentation.

[0068] In some specific embodiments, the tab position determination module 11 can specifically include:

[0069] The edge determination unit is configured to perform straight line detection on the collection image corresponding to the battery tab to determine the edge of the battery tab.

[0070] The tab determination unit is configured to determine the tab root in the left and right adjacent areas of the edge by connected component analysis, and determine the position of the tab according to the tab root.

[0071] In some specific embodiments, the tab position determination module 11 can specifically include:

[0072] The image splicing unit is configured to splice the current collection image with the last collection image, and determine a target detection area from the spliced image according to the position of the tab that has been positioned in the last collection image and the standard distance between tabs.

[0073] The tab determining unit is configured to determine a tab root in the target detection area by using a connected component analysis method, and locate a position of the tab according to the tab root.

[0074] In some embodiments, the identification hole matching module 12 can specifically include:

[0075] The first target area determining unit is configured to determine a first target area on the film area of the battery tab according to the position of the tab and a first preset positional relationship.

[0076] The first identification hole matching unit is configured to perform identification hole matching in the first target area by using a template matching method, and determine a position of an identification hole formed by punching on the battery tab according to a matching result.

[0077] In some embodiments, the identification hole matching module 12 can specifically include:

[0078] The second target area determining unit is configured to determine a second target area on the tab according to the position of the tab and a second preset positional relationship.

[0079] The second identification hole matching unit is configured to perform identification hole matching in the second target area by using a template matching method and a connected component analysis method, and determine a position of an identification hole formed by punching on the battery tab according to a matching result.

[0080] In some embodiments, the battery tab segmentation device can specifically include:

[0081] The segmentation unit is configured to, if no identification hole is matched, determine a segmentation position of the battery tab according to distances between tabs in the battery tab, so as to segment the battery tab according to the segmentation position to obtain a plurality of target battery tab segments.

[0082] In some embodiments, the tab segmentation module 13 can specifically include:

[0083] The measurement interval obtaining unit is configured to determine distances between each tab on the battery tab in sequence to obtain measurement intervals between each tab;

[0084] The reference interval obtaining unit is configured to obtain reference intervals between reference tabs; the reference tabs include a first target number of tabs on a segmentation line in the battery tab and a second target number of tabs below the segmentation line, and the segmentation line is a segmentation line between target battery tab segments that have been segmented in the battery tab.

[0085] The segmentation unit is configured to compare the measurement intervals with the reference intervals, and determine a segmentation position according to a comparison result.

[0086] Further, the embodiment of the present application also discloses an electronic device, referring to Figure 8 It should be noted that the contents shown in the drawings cannot be considered as any limitation on the use range of the present application.

[0087] Figure 8 A structural schematic diagram of an electronic device 20 provided by the embodiment of the present application is shown. The electronic device 20 can specifically include at least one processor 21, at least one memory 22, a power supply 23, a communication interface 24, an input / output interface 25 and a communication bus 26. The memory 22 is used for storing a computer program, and the computer program is loaded and executed by the processor 21 to realize the related steps in the battery cell tab segmentation method disclosed in any of the foregoing embodiments.

[0088] In the embodiment, the power supply 23 is used for providing working voltage for each hardware device on the electronic device 20; the communication interface 24 can create a data transmission channel between the electronic device 20 and external devices, and the communication protocol followed by the communication interface 24 can be any communication protocol applicable to the technical solution of the present application, which is not limited specifically herein; the input / output interface 25 is used for obtaining external input data or outputting data to the outside, and the specific interface type can be selected according to the specific application needs, which is not limited specifically herein.

[0089] In addition, the memory 22 as a carrier of resource storage can be a read-only memory, a random access memory, a magnetic disk or an optical disk, etc., and the resources stored thereon include an operating system 221, a computer program 222 and data 223 including tab positions, etc., and the storage mode can be temporary storage or permanent storage.

[0090] The operating system 221 is used for managing and controlling each hardware device on the electronic device 20 and the computer program 222, so as to realize the operation and processing of the processor 21 on the mass data 223 in the memory 22, and the operating system 221 can be Windows Server, Netware, Unix, Linux, etc. The computer program 222 can further include computer programs capable of completing other specific work in addition to the computer programs capable of completing the battery cell tab segmentation method executed by the electronic device 20 disclosed in any of the foregoing embodiments.

[0091] Further, the embodiment of the present application also discloses a computer storage medium, and the computer storage medium stores computer executable instructions. When the computer executable instructions are loaded and executed by a processor, the steps of the battery cell tab segmentation method disclosed in any of the foregoing embodiments are realized.

[0092] The various embodiments described in this specification are presented for the purpose of illustration and description. Each of the embodiments highlights a different aspect of the application. The embodiments are not mutually exclusive, and the various embodiments can be combined with each other. The same or similar elements are denoted by the same or similar reference signs.

[0093] The steps of a method or algorithm described in connection with the embodiments disclosed herein can be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module can reside in random access memory (RAM), flash memory, read-only memory (ROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, hard disk can be used as a storage medium.

[0094] Finally, it should be noted that the terms "first", "second", and the like, herein do not denote any order, quantity, combination, or importance, but rather are used to distinguish one element from another, and do not imply singular or plural. Moreover, the terms "include", "have", or any other variant thereof are intended to encompass non-exclusive inclusions, such that processes, methods, articles, or apparatuses that comprise a set of elements not expressly listed are not excluded from the scope of the present application. In the absence of further limitations, an element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0095] The above describes in detail the battery cell pole piece segmentation method, device, equipment and medium provided by the present application. The principles and implementation manners of the present application are described by applying specific examples. The above embodiment descriptions are only used to help understand the method of the present application and its core idea. For those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. A method for dividing battery cell electrodes, characterized in that, The method comprises the following steps: determining the tab root of the electrode tab according to each acquisition image corresponding to the electrode tab, and positioning the position of the tab according to the tab root; the tab root is detected in a region offset by a preset distance from the left and right of the electrode edge of the electrode tab; determining a target region according to the position of the tab, and performing recognition hole matching in the target region, if the recognition hole is matched, determining the position of the recognition hole according to the matching result; determining the segmentation position of the electrode tab according to the position of the recognition hole according to a preset segmentation rule, so as to obtain a plurality of target electrode tab segments after the electrode tab is segmented according to the segmentation position; wherein, the step of determining the tab root of the electrode tab according to each acquisition image corresponding to the electrode tab comprises: performing straight line detection on the acquisition image corresponding to the electrode tab to determine the electrode edge of the electrode tab; determining the tab root in the left and right adjacent regions of the electrode edge by connected component analysis method, and positioning the position of the tab according to the tab root.

2. The method of claim 1, wherein, The step of determining the tab root of the electrode tab according to each acquisition image corresponding to the electrode tab comprises: splicing the current acquisition image with the last acquisition image, and determining a target detection region from the spliced image according to the position of the tab already positioned in the last acquisition image and the standard distance between tabs; determining the tab root in the target detection region by connected component analysis method, and positioning the position of the tab according to the tab root.

3. The method of claim 1, wherein, The step of determining a target region according to the position of the tab, and performing recognition hole matching in the target region, if the recognition hole is matched, determining the position of the recognition hole according to the matching result, comprises: determining a first target region on the film area of the electrode tab according to the position of the tab and a first preset position relationship; performing recognition hole matching in the first target region by template matching method, and determining the position of the recognition hole formed by punching on the electrode tab according to the matching result.

4. The method of claim 1, wherein, The step of determining a target region according to the position of the tab, and performing recognition hole matching in the target region, if the recognition hole is matched, determining the position of the recognition hole according to the matching result, comprises: determining a second target region on the tab according to the position of the tab and a second preset position relationship; performing recognition hole matching in the second target region by template matching method and connected component analysis method, and determining the position of the recognition hole formed by punching on the electrode tab according to the matching result.

5. The method of claim 1 to 4, wherein, After the step of performing recognition hole matching in the target region, the method further comprises: if the recognition hole is not matched, determining the segmentation position of the electrode tab according to the distance between the tabs in the electrode tab, so as to obtain a plurality of target electrode tab segments after the electrode tab is segmented according to the segmentation position.

6. The method of claim 5, wherein, The step of determining the segmentation position of the electrode tab according to the distance between the tabs in the electrode tab comprises: determining the distance between each tab on the electrode tab in sequence to obtain the measured distance between each tab. acquire a reference interval between reference tabs; the reference tabs include a first target number of tabs on a division line in the electrode sheet of the battery cell and a second target number of tabs below the division line, and the division line is a division line between target electrode sheet segments that have been divided in the electrode sheet of the battery cell; compare the measured interval with the reference interval, and determine a division position according to a comparison result.

7. A battery cell electrode segmentation device, characterized in that, The method comprises the following steps: a tab position determining module is configured to determine a tab root of an electrode sheet of a battery cell according to each acquisition image corresponding to the electrode sheet, and locate a position of a tab according to the tab root; the tab root is detected in a region that is offset by a preset distance from left and right edges of the electrode sheet; an identification hole matching module is configured to determine a target region according to the position of the tab, and perform identification hole matching in the target region; if an identification hole is matched, a position of the identification hole is determined according to a matching result; an electrode sheet division module is configured to determine a division position of the electrode sheet of the battery cell according to the position of the identification hole according to a preset division rule, so as to divide the electrode sheet of the battery cell according to the division position to obtain a plurality of target electrode sheet segments. The tab position determining module is configured to perform straight line detection on an acquisition image corresponding to the electrode sheet of the battery cell to determine a left edge and a right edge of the electrode sheet; a tab root is determined in left and right adjacent regions of the left edge and the right edge by a connected domain analysis method, and a position of a tab is located according to the tab root.

8. An electronic device, comprising: The method comprises the following steps: a memory is configured to save a computer program; a processor is configured to execute the computer program to implement the electrode sheet division method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer program is stored in the memory and is executed by the processor to implement the electrode sheet division method according to any one of claims 1 to 6.

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