CN113506957A - Cutting method and device for soft-package battery cell tab, electronic equipment and storage medium - Google Patents

Cutting method and device for soft-package battery cell tab, electronic equipment and storage medium Download PDF

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Publication number
CN113506957A
CN113506957A CN202111065962.1A CN202111065962A CN113506957A CN 113506957 A CN113506957 A CN 113506957A CN 202111065962 A CN202111065962 A CN 202111065962A CN 113506957 A CN113506957 A CN 113506957A
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Prior art keywords
tab
image
target
battery cell
package battery
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Granted
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CN202111065962.1A
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Chinese (zh)
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CN113506957B (en
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吴轩
冉昌林
程从贵
刘超
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Wuhan Yifi Laser Corp Ltd
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Wuhan Yifi Laser Corp Ltd
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/70—Determining position or orientation of objects or cameras
    • G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • 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
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10004—Still image; Photographic image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10016—Video; Image sequence
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • 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
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)

Abstract

The invention provides a method and a device for cutting a soft-package battery cell tab, electronic equipment and a storage medium, wherein the method comprises the following steps: acquiring a first image of a target soft package battery cell; determining the position of a tab of the target soft-package battery cell and the position of a reference point on the body of the target soft-package battery cell in the first image; and controlling a cutter to cut the lug based on the position of the lug in the first image and the position of the reference point. According to the method and device for cutting the tab of the soft-package battery cell, the electronic equipment and the storage medium, the position and the direction of the tab of the target soft-package battery cell in the first image are determined through the first image of the target soft-package battery cell, the cutter is controlled to cut the tab of the target soft-package battery cell based on the position of the tab of the target soft-package battery cell in the first image, the tab of the target soft-package battery cell can be cut under the condition that the position of the tab of the target soft-package battery cell is not fixed, the cutting error rate can be reduced, and the cutting efficiency can be improved.

Description

Cutting method and device for soft-package battery cell tab, electronic equipment and storage medium
Technical Field
The invention relates to the technical field of industrial control, in particular to a method and a device for cutting a soft-package battery cell tab, electronic equipment and a storage medium.
Background
In the production process of the soft package battery cell, the tab needs to be cut into required sizes. The existing tab cutting method is to attach a template with a preset size to a part to be cut, manually control a cutter to cut, and cut the part to be cut into tabs with the preset size. But the efficiency that current soft-packaged electrical core utmost point ear cut is lower.
Disclosure of Invention
The invention provides a method and a device for cutting a soft-package battery cell tab, electronic equipment and a storage medium, which are used for solving the technical problem of low cutting efficiency of the soft-package battery cell tab in the prior art.
The invention provides a method for cutting a soft-package battery cell tab, which comprises the following steps:
acquiring a first image of a target soft package battery cell;
determining the position of a tab of the target soft package battery cell and the position of a reference point on the body of the target soft package battery cell in the first image;
and controlling a cutter to cut the lug based on the position of the lug in the first image and the position of the reference point.
According to the method for cutting the soft-package battery cell tab provided by the invention, after the cutter is controlled to cut the tab based on the position of the tab in the first image, the method further comprises the following steps:
acquiring a second image of the cut target soft package battery cell;
identifying a tab of the target soft-package battery cell in the second image;
and acquiring the size information of the cut tab based on the tab of the target soft package battery cell in the second image.
According to the method for cutting the tab of the soft-package battery cell provided by the invention, the determining of the position of the tab of the target soft-package battery cell and the position of the reference point on the body of the target soft-package battery cell in the first image specifically includes:
identifying a body and a tab of the target soft-package battery cell in the first image;
determining a position of the reference point based on the body in the first image, and determining a position of the tab based on the tab in the first image.
According to the method for cutting the soft-package battery cell tab provided by the invention, the step of controlling a cutter to cut the tab based on the position of the tab in the first image and the position of the reference point specifically comprises the following steps:
determining a target displacement and a target angle of rotation of the tool based on the position of the tab and the position of the reference point in the first image;
and controlling the cutter to move based on the target displacement and the target angle and rotate the target angle based on the target displacement, and cutting the tab.
According to the method for cutting the tab of the soft-package battery cell provided by the invention, the identifying of the body and the tab of the target soft-package battery cell in the first image specifically comprises the following steps:
carrying out contour extraction on the first image, and determining a plurality of straight lines in the first image;
and identifying the body and the lug of the target soft package battery cell in the first image based on the length and the position relation of each straight line.
According to the cutting method for the soft-package battery cell tab provided by the invention, the target displacement and the target rotation angle of the cutter are determined based on the position of the tab in the first image and the position of the reference point, and the method specifically comprises the following steps:
and determining a target displacement and a target rotation angle of the cutter based on the positions of the lugs and the reference points in the first image, and a preset reference position and a preset reference angle.
According to the cutting method for the soft-package battery cell tab provided by the invention, the target displacement and the target angle of rotation of the cutter are determined based on the position of the tab and the position of the reference point in the first image, and a preset reference position and a preset reference angle, and the method specifically comprises the following steps:
determining a pixel position difference corresponding to the tab based on the position of the tab in the first image, the position of the reference point and the reference position, and determining an angle difference corresponding to the tab based on the position of the tab in the first image, the position of the reference point and the reference angle;
mapping the pixel position difference and the angle difference to the target displacement and the target angle, respectively.
The invention also provides a cutting device for the soft-package battery cell tab, which comprises the following components:
the image acquisition module is used for acquiring a first image of the target soft package battery cell;
the image processing module is used for determining the position of a tab of the target soft package battery cell and the position of a reference point on the body of the target soft package battery cell in the first image;
and the tab cutting module is used for controlling a cutter to cut the tab based on the position of the tab in the first image and the position of the reference point.
The invention also provides electronic equipment which comprises a memory, a processor and a computer program which is stored on the memory and can be run on the processor, wherein the processor executes the computer program to realize the steps of any one of the soft-package cell tab cutting methods.
The invention also provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of any of the above-described methods for cutting a laminate tab of a flexible package cell.
According to the method, the device, the electronic equipment and the storage medium for cutting the tab of the soft-package battery cell, the position of the tab of the target soft-package battery cell in the first image is determined through the first image of the target soft-package battery cell, the cutter is controlled to cut the tab of the target soft-package battery cell based on the position of the target soft-package battery cell in the first image, the cutting of the tab of the target soft-package battery cell can be completed under the condition that the position of the tab of the target soft-package battery cell is not fixed, the error rate of cutting can be reduced, and the cutting efficiency can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for cutting a soft-package cell tab provided by the invention;
fig. 2 is a schematic diagram of a soft-package cell in the cutting method for the tab of the soft-package cell provided by the invention;
fig. 3 is a schematic structural diagram of a soft-package cell tab cutting device provided by the invention;
fig. 4 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and not order.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In order to overcome the problems in the prior art, the invention provides a method and a device for cutting a tab of a soft-package battery cell, electronic equipment and a storage medium.
Fig. 1 is a schematic flow chart of a method for cutting a soft-package cell tab provided by the invention. The method for cutting the soft-package cell tab according to the embodiment of the invention is described below with reference to fig. 1. As shown in fig. 1, the method includes: step 101, obtaining a first image of a target soft package battery cell.
Specifically, the first image of the target soft package battery cell may be acquired based on the first image or the first video of the target soft package battery cell acquired by the image acquisition device.
The image acquisition device can be a camera or a video camera and the like.
The image acquisition device can acquire a first image of the target soft package battery cell by photographing modes of the target soft package battery cell and the like, or acquire a first video of the target soft package battery cell by photographing modes of the target soft package battery cell and the like.
The video of the target soft package battery cell can be subjected to screenshot and other processing to obtain a first image of the target soft package battery cell.
And 102, determining the position of a tab of the target soft package battery cell and the position of a reference point on the body of the target soft package battery cell in the first image.
Specifically, as shown in fig. 2, the target soft package cell in the embodiment of the present invention may be provided with a tab 201, and after a first image of the target soft package cell is acquired, the target soft package cell in the first image and a body and a tab of the target soft package cell may be identified based on any target identification method.
After the tab of the target soft package cell in the first image is identified, the position of the tab of the target soft package cell in the first image may be determined.
The position of the tab of the target soft-package battery cell in the first image indicates the position of the tab of the target soft-package battery cell in the first image.
The reference point is a point on the body of the target soft-packed cell. Preferably, the reference point is a vertex of the body of the target soft-package cell closest to the tab.
The position of the reference point on the body of the target soft-package battery cell in the first image refers to the position of the reference point on the body of the target soft-package battery cell in the first image.
The transverse direction and the longitudinal direction of the image can be respectively used as an X axis and a Y axis, a coordinate system is established based on the X axis and the Y axis, and the coordinates of the characteristic points in the pole ear of the target soft package cell in the coordinate system are determined as the position of the pole ear of the target soft package cell in the first image.
The characteristic point can be one or more points in a tab of a preselected target soft package battery cell. For example, the characteristic point is a geometric center and/or several vertexes of a tab of the target soft package cell.
Several, one or more.
The coordinates of the reference point in the coordinate system may be determined as the position of the reference point in the first image based on the coordinate system.
It is to be understood that, in step 102, before determining the position of the target soft package cell in the first image, the first image of the target soft package cell may be preprocessed to improve the image quality.
The method of pre-processing may include at least one of image segmentation, image enhancement, and image binarization.
And 103, controlling a cutter to cut the lug on the basis of the position of the lug in the first image and the position of the reference point.
Specifically, the position of the tab of the target soft package battery cell in the first image and the position of the reference point correspond to the actual positions of the tab of the target soft package battery cell and the reference point, respectively, so that the distance between the actual position of the reference point and the actual position of the tab can be determined based on the position of the tab of the target soft package battery cell in the first image and the position of the reference point; according to the distance and the preset standard size of the tab, a target position (a target position, also called a cutting position, which refers to a lower cutting position of the cutter for cutting the tab of the target soft package battery cell) can be determined; after the control cutter moves to the actual position of the utmost point ear of target soft-packaged electrical core and adjusts the gesture of cutter for the actual position phase-match with the utmost point ear of target soft-packaged electrical core, the control cutter is through moving to the target position to the utmost point ear part lower sword of target soft-packaged electrical core is cut into predetermined shape and size with utmost point ear to predetermined angle, accomplishes cutting of the utmost point ear of target soft-packaged electrical core.
According to the embodiment of the invention, the position of the tab of the target soft-package battery cell in the first image is determined through the first image of the target soft-package battery cell, the cutter is controlled to cut the tab of the target soft-package battery cell based on the position of the tab of the target soft-package battery cell in the first image, the cutting of the tab of the target soft-package battery cell can be completed under the condition that the position of the tab of the target soft-package battery cell is not fixed, the error rate of cutting can be reduced, and the cutting efficiency can be improved.
Based on the content of any one of the above embodiments, after controlling the cutter to cut the tab based on the position of the tab in the first image, the method further includes: and acquiring a second image of the cut target soft package battery cell.
Specifically, after the tab is cut, a second image or a video of the cut target soft package battery cell may be acquired based on the image acquisition device, so as to obtain the second image of the target soft package battery cell.
The image acquisition device can acquire the second image of the target soft package battery cell by photographing the cut target soft package battery cell and other modes, or acquire the second video of the cut target soft package battery cell by photographing and other modes.
And screenshot and other processing can be carried out on the second video of the cut target soft package battery cell to obtain a second image of the target soft package battery cell.
And identifying the tab of the target soft package battery cell in the second image.
Specifically, after the second image of the target soft package cell is acquired, the target soft package cell and the tab of the target soft package cell in the second image may be identified based on any target identification method.
And acquiring the size information of the cut tab based on the tab of the target soft-package battery cell in the second image.
Specifically, after the tab of the target soft package battery cell in the second image is identified, the size information of the tab cut in the second image may be acquired.
The tab size information may include the length and width of the tab.
The length and width of the tab in the second image can be measured in number of pixels.
And mapping the number of pixels in the image space to the length in the actual space based on the imaging parameters of the second image to obtain the actual length and the actual width of the cut tab, so as to realize the accurate detection of the size of the tab of the soft-package battery cell.
According to the embodiment of the invention, the size information of the cut pole ear of the soft-package battery cell is obtained based on the second image of the cut target soft-package battery cell, so that the size of the pole ear of the soft-package battery cell can be detected more accurately.
Based on the content of any of the above embodiments, determining the position of the target soft-package cell in the first image and the position of the reference point on the body of the target soft-package cell specifically includes: and identifying the body and the electrode lug of the target soft package battery cell in the first image.
Specifically, as shown in fig. 2, the target soft-package cell may include a body 202 and a tab 201.
The number of the tabs 201 may be one or more. For example, the target soft-pack cell shown in fig. 2 includes 2 tabs 201.
The target soft package battery cell in the first image can be identified based on any target identification method, and the body and the tab of the target soft package battery cell in the first image are further identified.
The position of the reference point is determined based on the body in the first image, and the position of the tab is determined based on the tab in the first image.
Specifically, since the body of the target soft-package battery cell is the main portion of the target soft-package battery cell, the position of the body of the target soft-package battery cell in the first image may be represented by the position of the body of the target soft-package battery cell in the first image.
The characteristic points in the target soft-pack cell may be one or more points in the body of the target soft-pack cell. For example, the characteristic point in the target soft-package cell may be a geometric center and/or several vertices of the body of the target soft-package cell.
Several, one or more.
In the case that the feature point in the target soft package cell is one or more points in the body of the target soft package cell, the coordinate of the feature point in the coordinate system may be determined as the body position of the target soft package cell in the first image, so as to determine the position of the target soft package cell in the first image.
After the body and the tab of the target soft package battery cell in the first image are identified, the position of the body and the position of the tab of the target soft package battery cell in the first image can be respectively obtained.
The position of each tab of the target soft package battery cell in the first image can be determined according to the coordinates of the feature points in the tabs in the coordinate system.
The characteristic point in the tab may be one or more points in the tab. For example, the characteristic point in the tab may be the geometric center and/or several vertices of the tab.
The reference point on the body of the target soft-package cell is a predetermined point, for example, a vertex closest to the tab on the body of the target soft-package cell.
After the body of the target soft package cell is identified, the position of the reference point in the first image may be determined according to the coordinates of the reference point in the coordinate system.
According to the embodiment of the invention, the cutting position of the pole lug of the target soft package battery cell is determined by identifying the body and the pole lug of the target soft package battery cell in the first image and according to the reference point and the position of the pole lug of the target soft package battery cell in the first image, and the determined cutting position is more accurate, so that a cutter can be controlled to perform more accurate cutting on the target soft package battery cell based on the position of the target soft package battery cell, the error rate of cutting can be reduced, and the cutting efficiency can be improved.
Based on the content of any one of the above embodiments, based on the position of the tab in the first image and the position of the reference point, the method for controlling the cutter to cut the tab specifically includes: and determining a target displacement and a target angle of rotation of the cutter based on the position of the lug in the first image and the position of the reference point.
Specifically, the position of the tab in the first image and the position of the reference point are mapped to a real actual space based on the position of the tab in the first image and the imaging parameters of the first image, so that the actual position of the tab of the target soft package battery cell and the actual position of the reference point are obtained.
Based on the actual position of the tab and the actual position of the reference point, the difference between the cutter and the cutting position can be determined. From the above differences, the target displacement and the target angle of rotation of the tool can be determined.
The target displacement may refer to a distance between an actual position of the cutter and the cutting position.
After the cutter rotates for the target angle, the cutting edge can be close to the pole lug so as to cut the pole lug.
And based on the target displacement and the target angle, controlling the cutter to move based on the target displacement and rotate the target angle, and cutting the polar ear.
Specifically, after the target displacement and the target angle are determined, the tool may be controlled to move the target displacement and rotate the target angle.
The sequence between the displacement of the moving target of the cutter and the angle of the rotating target of the cutter is controlled, and the embodiment of the invention is not limited. The displacement of the moving target of the cutter can be controlled firstly, and then the rotating target angle of the cutter is controlled; or the cutter can be controlled to rotate by a target angle first, and then the cutter is controlled to move by a target; the displacement of the moving target of the cutter and the angle of the rotating target of the cutter can be controlled in parallel.
And controlling the displacement of the moving target of the cutter, specifically, controlling the displacement of the moving target of the characteristic point of the cutter.
The characteristic point of the tool may be a predetermined point on the tool.
According to the embodiment of the invention, the target displacement and the target rotating angle of the cutter are determined based on the position of the lug in the first image and the position of the reference point, and the cutter is controlled to move and rotate the target angle based on the target displacement and the target angle to cut the lug, so that the cutting error rate can be reduced, and the cutting efficiency can be improved.
Based on the content of any one of the above embodiments, identifying the body and the tab of the target soft-package battery cell in the first image specifically includes: and carrying out contour extraction on the first image, and determining a plurality of straight lines in the first image.
Specifically, a first image of the target soft package battery cell may be subjected to contour extraction, and a contour in the first image is acquired.
The straight line in the first image can be determined by performing straight line detection on the contour in the first image.
It will be appreciated that the body and tab of the target flexible pouch cell are generally rectangular or approximately rectangular, and therefore, typically, the straight line in the first image is a plurality of lines.
And identifying the body and the lug of the target soft package battery cell in the first image based on the length and the position relation of each straight line.
Specifically, can confirm two the longest parallel straight lines in above-mentioned many straight lines as the long limit of the body of target soft-package battery cell, the straight line that will connect above-mentioned two parallel straight lines and the above-mentioned two parallel straight lines of perpendicular to confirms the one end that does not set up utmost point ear for target soft-package battery cell to can discern the body of target soft-package battery cell in the first image.
According to the end, not provided with the tab, of the target soft package battery cell in the first image, determining the end, provided with the tab, of the target soft package battery cell in the first image; according to the plurality of straight line segments of one end, provided with the pole lug, of the target soft package battery cell in the first image, the pole lug of the target soft package battery cell in the first image can be identified.
According to the embodiment of the invention, the body and the lug of the target soft package battery cell in the first image are identified by performing contour extraction and linear detection on the first image of the target soft package battery cell, so that the body and the lug of the target soft package battery cell in the first image can be identified more accurately, the position of the target soft package battery cell can be determined more accurately based on the identified body and lug of the target soft package battery cell, and further, the cutter is controlled to cut the target soft package battery cell based on the position of the target soft package battery cell in the first image, so that the cutting of the target soft package battery cell can be completed under the condition that the position and/or direction of the target soft package battery cell is not fixed, the error rate of cutting can be reduced, and the cutting efficiency can be improved.
Based on the content of any one of the above embodiments, determining a target displacement and a target angle of rotation of the tool based on the position of the tab in the first image and the position of the reference point specifically includes: and determining a target displacement and a target rotation angle of the cutter based on the position of the lug in the first image and the position of the reference point, and a preset reference position and a preset reference angle.
Specifically, the position of the tab in the first image is mapped into a real actual space based on the position of the tab in the first image and the imaging parameters of the first image, so that the actual position of the tab of the target soft-package battery cell is obtained.
And obtaining the actual position of the reference point on the body of the target soft package battery cell according to the position of the reference point in the first image and the imaging parameter of the first image.
Based on the deviation between the actual position of the tab of the target soft-package battery cell and the actual position of the reference point on the body of the target soft-package battery cell, the cutting position of the tab of the target soft-package battery cell in the real space can be determined.
Based on the cutting position, a target displacement of the tool may be determined.
Optionally, the target displacement is a difference between the cutting position and a preset reference position.
The preset reference position may be a predetermined position. The reference position is used as a reference standard, the cutting position of the tab of the target soft package battery cell is compared with the reference position, the target displacement is the difference between the cutting position of the tab of the target soft package battery cell and the reference position, and the target displacement is determined.
It will be appreciated that the position of the reference position in real space is fixed.
According to the embodiment of the invention, the target displacement and the rotating target angle of the cutter are determined based on the position of the tab and the position of the reference point in the first image and the preset reference position and reference angle, and more accurate target displacement and target angle can be obtained, so that the cutter can be controlled to perform more accurate cutting on the target soft package battery cell based on the position of the target soft package battery cell, the error rate of cutting can be reduced, and the cutting efficiency can be improved.
Based on the content of any embodiment, the determining of the target displacement and the target angle of rotation of the tool based on the position of the tab and the position of the reference point in the first image, and the preset reference position and the preset reference angle specifically includes: and determining a pixel position difference corresponding to the tab based on the position of the tab in the first image, the position of the reference point and the reference position, and determining an angle difference corresponding to the tab based on the position of the tab in the first image, the position of the reference point and the reference angle.
Specifically, after determining the position of the tab of the target soft package battery cell and the position of the reference point in the first image, the cutting position of the tab of the target soft package battery cell in the first image may be determined; after the cutting position of the tab of the target soft package cell in the first image is determined, a coordinate difference (i.e., a pixel offset value) between the cutting position of the tab of the target soft package cell in the first image of the target soft package cell and the reference point in the coordinate system may be obtained as a pixel position difference corresponding to the tab.
The reference point is a pixel point obtained by mapping a reference position to an image space.
And determining the actual position difference between the reference position in the real space and the cutting position of the lug of the target soft package battery cell based on the pixel position difference and the imaging parameters of the first image.
The reference angle is a predetermined angle. Typically, the tool is at the reference angle.
Based on the position, the cutting position and the reference angle of the tab of the target soft package battery cell in the first image, the deviation between the cutting position and the reference angle can be used as the angle difference corresponding to the tab.
And mapping the pixel position difference and the angle difference into a target displacement and a target angle respectively.
Specifically, the pixel position difference is mapped into a real space based on the pixel position difference and the imaging parameter of the first image, an actual position difference between a reference position and a cutting position of a tab of the target soft package battery cell is obtained, and the actual position difference is determined as target displacement.
The angle difference corresponding to the tab can be determined as the target angle. It will be appreciated that after rotating the knife by the target angle, the angle of the knife may be such that the knife is parallel to the cutting position.
According to the embodiment of the invention, the pixel position difference corresponding to the tab is determined based on the position of the tab in the first image, the position of the reference point and the reference position, the angle difference corresponding to the tab is determined based on the position of the tab in the first image, the position of the reference point and the reference angle, the pixel position difference and the angle difference are respectively mapped into the target displacement and the target angle, and the more accurate target displacement and target angle can be obtained, so that the cutter can be controlled to perform more accurate cutting on the target soft package battery cell based on the position of the target soft package battery cell, the error rate of cutting can be reduced, and the cutting efficiency can be improved.
Based on the content of any one of the above embodiments, acquiring a first image of a target soft-package battery cell specifically includes: and acquiring a first image of the target soft package battery cell under the condition that the charging tray is detected to reach the second target position and the target soft package battery cell exists in the charging tray.
Specifically, whether or not the tray reaches the preset second position may be detected based on the first sensor.
And if so, detecting whether a soft package cell exists in the material tray or not based on the second sensor.
If the soft package battery core exists, the soft package battery core can be used as a target soft package battery core, and a first image of the target soft package battery core is obtained.
According to the embodiment of the invention, under the condition that the charging tray reaches the second target position and the target soft package battery cell exists in the charging tray, the first image of the target soft package battery cell is obtained, and the tab cutting process of the target soft package battery cell is started, so that invalid control can be avoided. And moreover, the first image of the target soft package battery cell which meets the requirements can be acquired, so that the cutting of the target soft package battery cell is controlled based on the first image of the target soft package battery cell, the cutting error rate can be reduced, and the cutting efficiency can be improved.
The following describes the cutting device for the tab of the soft-package battery cell provided by the invention, and the cutting device for the tab of the soft-package battery cell described below and the cutting method for the tab of the soft-package battery cell described above can be referred to correspondingly.
Fig. 3 is a schematic structural diagram of a soft-package cell tab cutting device according to an embodiment of the present invention. Based on the content of any one of the above embodiments, as shown in fig. 3, the apparatus includes an image acquisition module 301, an image processing module 302 and a tab cutting module 303, wherein:
the image acquisition module 301 is configured to acquire a first image of a target soft package battery cell;
the image processing module 302 is configured to determine a position of a tab of the target soft package battery cell and a position of a reference point on the body of the target soft package battery cell in the first image;
and the tab cutting module 303 is configured to control the cutter to cut the tab based on the position of the tab in the first image and the position of the reference point.
Specifically, the image acquisition module 301, the image processing module 302, and the tab cutting module 303 are electrically connected in sequence.
The image acquisition module 301 may directly acquire the first image of the target soft-package battery cell or perform processing such as screenshot on the video of the target soft-package battery cell to acquire the first image of the target soft-package battery cell.
The image processing module 302 may identify the target soft package cell and the body and the tab of the target soft package cell in the first image based on any target identification method; and determining the position of the tab of the target soft package battery cell and the position of the reference point on the body in the first image based on the coordinate system of the first image.
The tab cutting module 303 may control the cutter to cut the tab portion of the target soft-package battery cell at a predetermined angle after controlling the cutter to move to the cutting position of the target soft-package battery cell and adjust the posture to match the actual position of the target soft-package battery cell based on the position of the tab of the target soft-package battery cell in the first image and the position of the reference point on the body, so as to cut the tab into a predetermined shape and size, thereby completing the cutting of the target soft-package battery cell.
The cutting device for the soft-package battery cell tab provided by the embodiment of the invention is used for executing the cutting method for the soft-package battery cell tab provided by the invention, and the implementation mode of the cutting device for the soft-package battery cell tab is consistent with that of the cutting method for the soft-package battery cell provided by the invention, and the same beneficial effects can be achieved, and the details are not repeated here.
The soft-package battery cell tab cutting device is used for the soft-package battery cell tab cutting method in each embodiment. Therefore, the descriptions and definitions in the soft-package cell tab cutting method in the foregoing embodiments can be used for understanding the implementation modules in the embodiments of the present invention.
According to the embodiment of the invention, the position of the tab of the target soft-package battery cell in the first image is determined through the first image of the target soft-package battery cell, the cutter is controlled to cut the tab of the target soft-package battery cell based on the position of the tab of the target soft-package battery cell in the first image, the cutting of the tab of the target soft-package battery cell can be completed under the condition that the position of the tab of the target soft-package battery cell is not fixed, the error rate of cutting can be reduced, and the cutting efficiency can be improved.
Fig. 4 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 4: a processor (processor)410, a communication Interface 420, a memory (memory)430 and a communication bus 440, wherein the processor 410, the communication Interface 420 and the memory 430 are communicated with each other via the communication bus 440. The processor 410 may invoke logic instructions stored in the memory 430 and executable on the processor 410 to perform the method for soft pack cell tab cutting provided by the above-described method embodiments, the method comprising: acquiring a first image of a target soft package battery cell; determining the position of a tab of a target soft package battery cell and the position of a reference point on a body of the target soft package battery cell in the first image; and controlling the cutter to cut the lug on the basis of the position of the lug in the first image and the position of the reference point.
In addition, the logic instructions in the memory 430 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The processor 410 in the electronic device provided by the embodiment of the present invention may call a logic instruction in the memory 430, and the implementation manner of the processor is consistent with the implementation manner of the soft package cell tab cutting method provided by the present invention, and the same beneficial effects may be achieved, and details are not described here.
In another aspect, an embodiment of the present invention further provides a computer program product, where the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, where the computer program includes program instructions, and when the program instructions are executed by a computer, the computer is capable of executing the soft-package cell tab cutting method provided in the foregoing method embodiments, where the method includes: acquiring a first image of a target soft package battery cell; determining the position of a tab of a target soft package battery cell and the position of a reference point on a body of the target soft package battery cell in the first image; and controlling the cutter to cut the lug on the basis of the position of the lug in the first image and the position of the reference point.
When the computer program product provided by the embodiment of the present invention is executed, the method for cutting a tab of a soft-package battery cell is implemented, and the specific implementation manner of the method is consistent with the implementation manner described in the embodiment of the foregoing method, and the same beneficial effects can be achieved, and details are not repeated here.
In another aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented by a processor to execute the method for cutting a soft-package cell tab provided in the foregoing embodiments, where the method includes: acquiring a first image of a target soft package battery cell; determining the position of a tab of a target soft package battery cell and the position of a reference point on a body of the target soft package battery cell in the first image; and controlling the cutter to cut the lug on the basis of the position of the lug in the first image and the position of the reference point.
When a computer program stored on a non-transitory computer-readable storage medium provided in an embodiment of the present invention is executed, a method for cutting a tab of a flexible package cell is implemented, where a specific implementation manner of the method is consistent with that described in the foregoing method, and the same beneficial effects can be achieved, and are not described herein again.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a soft-packaged electrical core utmost point ear cutting method which characterized in that includes:
acquiring a first image of a target soft package battery cell;
determining the position of a tab of the target soft package battery cell and the position of a reference point on the body of the target soft package battery cell in the first image;
and controlling a cutter to cut the lug based on the position of the lug in the first image and the position of the reference point.
2. The method for cutting the soft package core tab according to claim 1, wherein after the step of controlling a cutter to cut the tab based on the position of the tab in the first image, the method further comprises:
acquiring a second image of the cut target soft package battery cell;
identifying a tab of the target soft-package battery cell in the second image;
and acquiring the size information of the cut tab based on the tab of the target soft package battery cell in the second image.
3. The method for cutting the soft-package cell tab according to claim 1, wherein the determining the position of the tab of the target soft-package cell and the position of the reference point on the body of the target soft-package cell in the first image specifically includes:
identifying a body and a tab of the target soft-package battery cell in the first image;
determining a position of the reference point based on the body in the first image, and determining a position of the tab based on the tab in the first image.
4. The method for cutting the soft package core tab according to claim 1, wherein the controlling a cutter to cut the tab based on the position of the tab in the first image and the position of the reference point specifically comprises:
determining a target displacement and a target angle of rotation of the tool based on the position of the tab and the position of the reference point in the first image;
and controlling the cutter to move based on the target displacement and the target angle and rotate the target angle based on the target displacement, and cutting the tab.
5. The method for cutting the soft package cell tab according to claim 3, wherein the identifying the body and the tab of the target soft package cell in the first image specifically comprises:
carrying out contour extraction on the first image, and determining a plurality of straight lines in the first image;
and identifying the body and the lug of the target soft package battery cell in the first image based on the length and the position relation of each straight line.
6. The method for cutting the soft package core tab according to claim 4, wherein the determining the target displacement and the target angle of rotation of the cutter based on the position of the tab in the first image and the position of the reference point specifically comprises:
and determining a target displacement and a target rotation angle of the cutter based on the positions of the lugs and the reference points in the first image, and a preset reference position and a preset reference angle.
7. The method according to claim 6, wherein the determining the target displacement and the target angle of rotation of the cutter based on the position of the tab and the position of the reference point in the first image and a preset reference position and a preset reference angle specifically comprises:
determining a pixel position difference corresponding to the tab based on the position of the tab in the first image, the position of the reference point and the reference position, and determining an angle difference corresponding to the tab based on the position of the tab in the first image, the position of the reference point and the reference angle;
mapping the pixel position difference and the angle difference to the target displacement and the target angle, respectively.
8. The utility model provides a soft-packaged electrical core utmost point ear cutting device which characterized in that includes:
the image acquisition module is used for acquiring a first image of the target soft package battery cell;
the image processing module is used for determining the position of a tab of the target soft package battery cell and the position of a reference point on the body of the target soft package battery cell in the first image;
and the tab cutting module is used for controlling a cutter to cut the tab based on the position of the tab in the first image and the position of the reference point.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor when executing the program implements the steps of the soft-pack cell tab cutting method according to any of claims 1 to 7.
10. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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