CN117232425B - Method, device, equipment and medium for measuring cutting depth of anode material of lithium battery - Google Patents
Method, device, equipment and medium for measuring cutting depth of anode material of lithium battery Download PDFInfo
- Publication number
- CN117232425B CN117232425B CN202311508420.6A CN202311508420A CN117232425B CN 117232425 B CN117232425 B CN 117232425B CN 202311508420 A CN202311508420 A CN 202311508420A CN 117232425 B CN117232425 B CN 117232425B
- Authority
- CN
- China
- Prior art keywords
- tab
- boundary
- determining
- intaglio
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 62
- 239000010405 anode material Substances 0.000 title claims abstract description 54
- 238000005520 cutting process Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 45
- 239000011248 coating agent Substances 0.000 claims abstract description 59
- 238000000576 coating method Methods 0.000 claims abstract description 59
- 238000001514 detection method Methods 0.000 claims abstract description 51
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 238000003860 storage Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 6
- 238000000691 measurement method Methods 0.000 claims description 2
- 238000003384 imaging method Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention provides a method, a device, equipment and a medium for measuring the cutting depth of an anode material of a lithium battery, which belong to the technical field of depth measurement, wherein the method comprises the steps of generating a tab detection area in a tab central area in an original image; in the tab detection area, determining all longitudinal edges of the tab; traversing gradient values of all longitudinal edges based on contrast and brightness, and determining boundaries between the tabs and the intaglio; taking the boundary between the tab and the intaglio as a reference position, and searching edges in the material direction to obtain the boundary between the intaglio and the coating; the method comprises the steps of calculating the distance from the boundary between the intaglio and the coating to the boundary of the material, determining the cutting depth of the anode material of the lithium battery, and determining the boundary between the tab and the intaglio as a reference boundary to further determine the boundary between the intaglio and the coating, so that interference of intaglio imaging can be effectively eliminated, stability of measurement of the cutting depth of the anode of the lithium battery is ensured, and measurement accuracy is improved.
Description
Technical Field
The invention relates to the technical field of depth measurement, in particular to a method, a device, equipment and a medium for measuring the cutting depth of an anode material of a lithium battery.
Background
The visual detection of the cutting depth of the anode of the lithium battery refers to a method for visually detecting the cutting depth of an anode material in the manufacturing process of the lithium battery. The anode of a lithium battery is referred to as the negative electrode in the battery, and is usually made of graphite or the like. In lithium battery fabrication, the depth of cut of the anode is an important parameter that affects the capacity and performance of the battery. Excessive cut depth can lead to loss of electrode material and insufficient electrolyte infiltration, affecting battery capacity and cycle life; too small a depth of cut results in a reduced contact area of the electrode material with the electrolyte, affecting the energy density and performance of the cell. Currently, the cutting depth of the anode material of the lithium battery is detected by directly extracting the boundary between the intaglio region and the coating region of the lithium battery material.
However, due to unstable imaging of the intaglio region, extraction misalignment is likely to occur at the time of boundary extraction, resulting in inaccurate measurement results of the cutting depth of the anode material of the lithium battery.
Disclosure of Invention
The invention provides a method, a device, equipment and a medium for measuring the cutting depth of an anode material of a lithium battery, which are used for solving the defect of inaccurate measuring result of the cutting depth of the anode material of the lithium battery in the prior art.
The invention provides a method for measuring the cutting depth of an anode material of a lithium battery, which comprises the following steps:
generating a tab detection area in a tab center area in an original image;
determining all longitudinal edges of the tab within the tab detection area;
traversing gradient values of all the longitudinal edges based on contrast and brightness, and determining boundaries between the tabs and the intaglio;
taking the boundary between the tab and the intaglio as a reference position, and searching edges in the material direction to obtain the boundary between the intaglio and the coating;
and calculating the distance from the boundary between the intaglio and the coating to the boundary of the material, and determining the cutting depth of the anode material of the lithium battery.
According to the method for measuring the cutting depth of the anode material of the lithium battery, which is provided by the invention, the gradient values of all the longitudinal edges are traversed based on the contrast and the brightness, and the boundary between the tab and the intaglio is determined, and the method comprises the following steps:
traversing all the longitudinal edges based on the height standard value of the tab, and positioning the high edge of the tab;
and traversing the gradient value of each longitudinal edge based on the high edge, the contrast and the brightness, and determining the boundary between the tab and the intaglio.
According to the method for measuring the cutting depth of the anode material of the lithium battery, provided by the invention, the boundary between the tab and the intaglio is used as a reference position, and the boundary between the intaglio and the coating is obtained by searching edges in the material direction, and the method comprises the following steps:
determining all suspected boundaries between the fiducial locations to the coating;
respectively calculating gray values between two adjacent suspected boundaries;
and when the gray value is smaller than the coating average gray value, determining a suspected boundary, which is far from the reference boundary and corresponds to the gray value, as a boundary between the gravure and the coating.
According to the method for measuring the cutting depth of the anode material of the lithium battery, provided by the invention, all longitudinal edges of the tab are determined in the tab detection area, and the method comprises the following steps:
determining a detection brightness value in the tab detection area;
and determining all longitudinal edges of the tab based on the relationship between the tab brightness standard value and the detection brightness value.
According to the method for measuring the cutting depth of the anode material of the lithium battery provided by the invention, the distance from the boundary between the intaglio and the coating to the boundary of the material is calculated, and before the cutting depth of the anode material of the lithium battery is determined, the method further comprises the following steps:
and determining the position of the material boundary in the original image based on the gray threshold value.
According to the method for measuring the cutting depth of the anode material of the lithium battery, provided by the invention, a tab detection area is generated in the tab center area in an original image, and the method comprises the following steps:
collecting an original image of the current core;
identifying a tab in the original image and determining a central area of the tab;
and generating a tab detection area comprising the central area of the tab.
The invention also provides a device for measuring the cutting depth of the anode material of the lithium battery, which comprises the following components:
the generation module is used for generating a tab detection area in the tab center area in the original image;
the determining module is used for determining all longitudinal edges of the tab in the tab detection area;
the traversing module is used for traversing the gradient values of all the longitudinal edges based on contrast and brightness and determining the boundary between the tab and the intaglio;
the edge searching module is used for searching edges in the material direction by taking the boundary between the tab and the intaglio as a reference position to obtain the boundary between the intaglio and the coating;
and the calculating module is used for calculating the distance from the boundary between the intaglio and the coating to the boundary of the material and determining the cutting depth of the anode material of the lithium battery.
According to the device for measuring the cutting depth of the anode material of the lithium battery, provided by the invention, the traversing module is specifically used for:
traversing all the longitudinal edges based on the height standard value of the tab, and positioning the high edge of the tab;
and traversing the gradient value of each longitudinal edge based on the high edge, the contrast and the brightness, and determining the boundary between the tab and the intaglio.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the method for measuring the cutting depth of the anode material of the lithium battery when executing the program.
The invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of measuring a depth of cut of anode material of a lithium battery as described in any of the above.
The invention provides a method, a device, equipment and a medium for measuring the cutting depth of an anode material of a lithium battery, wherein the method comprises the steps of generating a tab detection area in a tab central area in an original image; in the tab detection area, determining all longitudinal edges of the tab; traversing gradient values of all longitudinal edges based on contrast and brightness, and determining boundaries between the tabs and the intaglio; taking the boundary between the tab and the intaglio as a reference position, and searching edges in the material direction to obtain the boundary between the intaglio and the coating; the method comprises the steps of calculating the distance from the boundary between the intaglio and the coating to the boundary of the material, determining the cutting depth of the anode material of the lithium battery, and determining the boundary between the tab and the intaglio as a reference boundary to further determine the boundary between the intaglio and the coating, so that interference of intaglio imaging can be effectively eliminated, stability of measurement of the cutting depth of the anode of the lithium battery is ensured, and measurement accuracy is improved.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for measuring a cutting depth of an anode material of a lithium battery according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a tab detection area according to an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of a longitudinal edge provided by an embodiment of the present invention;
FIG. 4 is a schematic view of a high edge structure of a tab according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a boundary between a tab and a recess provided in an embodiment of the present invention;
FIG. 6 is a schematic view of the boundary between gravure and coating provided by an embodiment of the present invention;
FIG. 7 is a schematic view of a material boundary structure provided by an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a device for measuring a cutting depth of an anode material of a lithium battery according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following describes a method, a device, equipment and a medium for measuring the cutting depth of anode materials of a lithium battery according to the invention with reference to fig. 1 to 9.
Fig. 1 is a schematic flow chart of a method for measuring a cutting depth of an anode material of a lithium battery according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a tab detection area according to an embodiment of the present invention; FIG. 3 is a schematic view of the structure of a longitudinal edge provided by an embodiment of the present invention; FIG. 4 is a schematic view of a high edge structure of a tab according to an embodiment of the present invention; fig. 5 is a schematic structural view of a boundary between a tab and a recess provided in an embodiment of the present invention; FIG. 6 is a schematic view of the boundary between gravure and coating provided by an embodiment of the present invention; fig. 7 is a schematic structural diagram of a material boundary according to an embodiment of the present invention.
As shown in fig. 1, the method for measuring the cutting depth of the anode material of the lithium battery provided by the embodiment of the invention mainly comprises the following steps:
101. and generating a tab detection area in the tab center area in the original image.
In a specific implementation process, an original image of a current core is firstly acquired, then a tab in the original image is identified, a central area of the tab is determined, and finally a tab detection area containing the central area of the tab is generated. As shown in fig. 2, the white portion is a tab, and the gray frame is a tab detection area, and it can be seen that the tab detection area covers the tab. The size of the tab detection area can be adjusted according to actual situations, so long as the tab is included, and the subsequent extraction of the boundary between the tab and the intaglio plate can be completed.
102. In the tab detection area, all longitudinal edges of the tab are determined.
As shown in fig. 3, all longitudinal edges of the tab are determined on the basis of fig. 2, and the longitudinal edges refer to lines in the vertical direction in the drawing, i.e., lines on both sides of the white tab in the drawing. Specifically, an intersection part overlapped with the tab is found in the tab detection area, that is, the tab part covered under the tab detection area, and then the longitudinal edges of the left and right sides of the tab are determined. The detection brightness value in the tab detection area can be determined, and then the boundary part of the tab can be clearly determined according to the relationship between the tab brightness standard value and the real-time detection brightness value, so that all longitudinal edges can be accurately and rapidly determined.
103. And traversing gradient values of all longitudinal edges based on the contrast and the brightness, and determining the boundary between the tab and the intaglio.
The tab is the brightest area in the image, and the boundary between the coating and the intaglio is the boundary with the highest contrast in the image, so that the boundary between the tab and the intaglio can be accurately determined by traversing the gradient values of all the longitudinal edges.
Firstly, all longitudinal edges need to be traversed based on the height standard value of the tab, and the high edge of the tab is positioned, as shown in fig. 4, the longitudinal edge at the left block diagram position is the high edge of the tab, so that the longitudinal edge at the other side of the corresponding tab is the boundary between the tab and the intaglio plate. Thus, the boundary between the tab and the intaglio, i.e., the middle line indicated by the rectangular box in fig. 5, can be accurately determined by traversing the gradient value of each longitudinal edge based on the relationship between the high edge, contrast and brightness.
104. And (3) taking the boundary between the tab and the intaglio as a reference position, and searching edges in the material direction to obtain the boundary between the intaglio and the coating.
After determining the boundary between the tab and the intaglio, the boundary between the tab and the intaglio is used as a reference position to search the edge in the material direction, namely, as shown in fig. 6, namely, the edge is searched from the middle line to the right side, and the boundary between the intaglio and the coating is found, namely, the line indicated by the rectangular box in fig. 6 is marked as the boundary between the intaglio and the coating.
105. And calculating the distance from the boundary between the gravure plate and the coating to the boundary of the material, and determining the cutting depth of the anode material of the lithium battery.
After the boundary between the gravure plate and the coating is accurately obtained, the distance from the boundary of the material needs to be determined, and then the cutting depth of the anode material of the lithium battery is determined. The material boundary in the original image can be determined through the gray threshold, as shown in fig. 7, the rightmost line is the material boundary, and then the distance between the two boundaries is calculated.
The method for measuring the cutting depth of the anode material of the lithium battery comprises the steps of generating a tab detection area in a tab center area in an original image; in the tab detection area, determining all longitudinal edges of the tab; traversing gradient values of all longitudinal edges based on contrast and brightness, and determining boundaries between the tabs and the intaglio; taking the boundary between the tab and the intaglio as a reference position, and searching edges in the material direction to obtain the boundary between the intaglio and the coating; the method comprises the steps of calculating the distance from the boundary between the intaglio and the coating to the boundary of the material, determining the cutting depth of the anode material of the lithium battery, and determining the boundary between the tab and the intaglio as a reference boundary to further determine the boundary between the intaglio and the coating, so that interference of intaglio imaging can be effectively eliminated, stability of measurement of the cutting depth of the anode of the lithium battery is ensured, and measurement accuracy is improved.
Further, on the basis of the above embodiment, in this embodiment, the boundary between the tab and the gravure is used as a reference position, and the boundary between the gravure and the coating is obtained by searching the edge in the material direction, which includes: determining all suspected boundaries between the reference location and the coating; respectively calculating gray values between two adjacent suspected boundaries; and when the gray value is smaller than the coating average gray value, determining a suspected boundary which is far from the reference boundary and corresponds to the gray value as a boundary between the gravure and the coating.
Specifically, because of instability of intaglio imaging, a suspected boundary causing interference may occur in an intaglio region to affect determination of a boundary between intaglio and coating, as shown in fig. 6, a white region is a tab, a right side portion of the tab is an intaglio, a right side portion of the intaglio is a coating, in order to accurately determine the boundary between the intaglio and the coating, a gray value between the boundaries needs to be calculated, and in order to avoid interference of brightness of the tab on the intaglio, only when the gray value between two boundaries is smaller than an average gray value of coating, the boundary between the two boundaries away from the tab side is determined to be the boundary between the intaglio and the coating.
Based on the same general inventive concept, the invention also provides a device for measuring the cutting depth of the anode material of the lithium battery, which is described below, and the device for measuring the cutting depth of the anode material of the lithium battery and the method for measuring the cutting depth of the anode material of the lithium battery described below can be correspondingly referred to each other.
Fig. 8 is a schematic structural diagram of a device for measuring a cutting depth of an anode material of a lithium battery according to an embodiment of the present invention.
As shown in fig. 8, a device for measuring a cutting depth of an anode material of a lithium battery according to an embodiment of the present invention includes:
a generating module 801, configured to generate a tab detection area in a tab center area in an original image;
a determining module 802, configured to determine all longitudinal edges of the tab in the tab detection area;
a traversing module 803, configured to traverse gradient values of all longitudinal edges based on contrast and brightness, and determine a boundary between the tab and the intaglio;
the edge searching module 804 is configured to search edges in a material direction with a boundary between the tab and the gravure as a reference position, so as to obtain a boundary between the gravure and the coating;
a calculation module 805 for calculating the distance from the boundary between the gravure plate and the coating to the boundary of the material, and determining the cutting depth of the anode material of the lithium battery.
The device for measuring the cutting depth of the anode material of the lithium battery comprises a tab detection area generated in a tab center area in an original image; in the tab detection area, determining all longitudinal edges of the tab; traversing gradient values of all longitudinal edges based on contrast and brightness, and determining boundaries between the tabs and the intaglio; taking the boundary between the tab and the intaglio as a reference position, and searching edges in the material direction to obtain the boundary between the intaglio and the coating; the method comprises the steps of calculating the distance from the boundary between the intaglio and the coating to the boundary of the material, determining the cutting depth of the anode material of the lithium battery, and determining the boundary between the tab and the intaglio as a reference boundary to further determine the boundary between the intaglio and the coating, so that interference of intaglio imaging can be effectively eliminated, stability of measurement of the cutting depth of the anode of the lithium battery is ensured, and measurement accuracy is improved.
Further, the traversing module 803 in this embodiment is specifically configured to:
traversing all longitudinal edges based on the height standard value of the tab, and positioning the high edge of the tab;
the boundary between the tab and the intaglio is determined by traversing the gradient value of each longitudinal edge based on the high edge, contrast and brightness.
Further, the edge finding module 804 in this embodiment is specifically configured to:
determining all suspected boundaries between the fiducial locations to the coating;
respectively calculating gray values between two adjacent suspected boundaries;
and when the gray value is smaller than the coating average gray value, determining a suspected boundary, which is far from the reference boundary and corresponds to the gray value, as a boundary between the gravure and the coating.
Further, the determining module 802 in this embodiment is specifically configured to:
determining a detection brightness value in the tab detection area;
and determining all longitudinal edges of the tab based on the relationship between the tab brightness standard value and the detection brightness value.
Further, the calculating module 805 in this embodiment is specifically configured to:
and determining the position of the material boundary in the original image based on the gray threshold value.
Further, the generating module 801 in this embodiment is specifically configured to:
collecting an original image of the current core;
identifying a tab in the original image and determining a central area of the tab;
and generating a tab detection area comprising the central area of the tab.
Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
As shown in fig. 9, the electronic device may include: processor 910, communication interface (Communications Interface), memory 930, and communication bus 940, wherein processor 910, communication interface 920, and memory 930 communicate with each other via communication bus 940. Processor 910 may invoke logic instructions in memory 930 to perform a lithium battery anode material cut depth measurement method comprising: generating a tab detection area in a tab center area in an original image; determining all longitudinal edges of the tab within the tab detection area; traversing gradient values of all the longitudinal edges based on contrast and brightness, and determining boundaries between the tabs and the intaglio; taking the boundary between the tab and the intaglio as a reference position, and searching edges in the material direction to obtain the boundary between the intaglio and the coating; and calculating the distance from the boundary between the intaglio and the coating to the boundary of the material, and determining the cutting depth of the anode material of the lithium battery.
Further, the logic instructions in the memory 930 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform 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, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the method for measuring a depth of cut of an anode material of a lithium battery provided by the above methods, the method comprising: generating a tab detection area in a tab center area in an original image; determining all longitudinal edges of the tab within the tab detection area; traversing gradient values of all the longitudinal edges based on contrast and brightness, and determining boundaries between the tabs and the intaglio; taking the boundary between the tab and the intaglio as a reference position, and searching edges in the material direction to obtain the boundary between the intaglio and the coating; and calculating the distance from the boundary between the intaglio and the coating to the boundary of the material, and determining the cutting depth of the anode material of the lithium battery.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The method for measuring the cutting depth of the anode material of the lithium battery is characterized by comprising the following steps of:
generating a tab detection area in a tab center area in an original image;
determining all longitudinal edges of the tab within the tab detection area;
traversing gradient values of all the longitudinal edges based on contrast and brightness, and determining boundaries between the tabs and the intaglio; comprising the following steps: traversing all the longitudinal edges based on the height standard value of the tab, and positioning the high edge of the tab; traversing the gradient value of each longitudinal edge based on the high edge, contrast and brightness, and determining the boundary between the tab and the intaglio;
taking the boundary between the tab and the intaglio as a reference position, and searching edges in the material direction to obtain the boundary between the intaglio and the coating; comprising the following steps: determining all suspected boundaries between the fiducial locations to the coating; respectively calculating gray values between two adjacent suspected boundaries; when the gray value is smaller than the coating average gray value, determining a suspected boundary, which is far away from the reference position and corresponds to the gray value, as a boundary between the gravure and the coating;
and calculating the distance from the boundary between the intaglio and the coating to the boundary of the material, and determining the cutting depth of the anode material of the lithium battery.
2. The method of claim 1, wherein determining all longitudinal edges of the tab in the tab detection area comprises:
determining a detection brightness value in the tab detection area;
and determining all longitudinal edges of the tab based on the relationship between the tab brightness standard value and the detection brightness value.
3. The method of claim 1, wherein calculating the distance from the boundary between the gravure and the coating to the boundary of the material, before determining the depth of cut of the anode material of the lithium battery, further comprises:
and determining the position of the material boundary in the original image based on the gray threshold value.
4. The method for measuring the cutting depth of the anode material of the lithium battery according to claim 1, wherein the generating the tab detection area in the tab center area in the original image comprises:
collecting an original image of the current core;
identifying a tab in the original image and determining a central area of the tab;
and generating a tab detection area comprising the central area of the tab.
5. A lithium battery anode material plunge depth measurement device, comprising:
the generation module is used for generating a tab detection area in the tab center area in the original image;
the determining module is used for determining all longitudinal edges of the tab in the tab detection area;
the traversing module is used for traversing the gradient values of all the longitudinal edges based on contrast and brightness and determining the boundary between the tab and the intaglio; the method is particularly used for: traversing all the longitudinal edges based on the height standard value of the tab, and positioning the high edge of the tab; traversing the gradient value of each longitudinal edge based on the high edge, contrast and brightness, and determining the boundary between the tab and the intaglio;
the edge searching module is used for searching edges in the material direction by taking the boundary between the tab and the intaglio as a reference position to obtain the boundary between the intaglio and the coating; the method is particularly used for: determining all suspected boundaries between the fiducial locations to the coating; respectively calculating gray values between two adjacent suspected boundaries; when the gray value is smaller than the coating average gray value, determining a suspected boundary, which is far away from the reference position and corresponds to the gray value, as a boundary between the gravure and the coating;
and the calculating module is used for calculating the distance from the boundary between the intaglio and the coating to the boundary of the material and determining the cutting depth of the anode material of the lithium battery.
6. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor, when executing the program, implements the method of measuring the depth of cut of anode material of a lithium battery as claimed in any one of claims 1 to 4.
7. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the lithium battery anode material cut-in depth measurement method according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311508420.6A CN117232425B (en) | 2023-11-14 | 2023-11-14 | Method, device, equipment and medium for measuring cutting depth of anode material of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311508420.6A CN117232425B (en) | 2023-11-14 | 2023-11-14 | Method, device, equipment and medium for measuring cutting depth of anode material of lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117232425A CN117232425A (en) | 2023-12-15 |
| CN117232425B true CN117232425B (en) | 2024-02-13 |
Family
ID=89084621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311508420.6A Active CN117232425B (en) | 2023-11-14 | 2023-11-14 | Method, device, equipment and medium for measuring cutting depth of anode material of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117232425B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254719A (en) * | 2002-03-04 | 2003-09-10 | Nitto Denko Corp | Method of inspecting coating area |
| CN107941805A (en) * | 2017-12-01 | 2018-04-20 | 无锡先导智能装备股份有限公司 | Battery core quality determining method |
| CN113526066A (en) * | 2021-06-30 | 2021-10-22 | 广东利元亨智能装备股份有限公司 | Pole piece machining deviation rectifying method, deviation rectifying device and computer readable storage medium |
| CN114018160A (en) * | 2021-11-09 | 2022-02-08 | 北京深点视觉科技有限公司 | Lug imaging device and lug size detection method |
| CN114037657A (en) * | 2021-10-12 | 2022-02-11 | 上海电机学院 | Lithium battery tab defect detection method combining region growth and annular correction |
| CN115790384A (en) * | 2023-02-13 | 2023-03-14 | 钛玛科（北京）工业科技有限公司 | Polishing imaging method and device based on gravure coating |
| CN116168082A (en) * | 2022-12-29 | 2023-05-26 | 凌云光技术股份有限公司 | Positioning method and positioning device for tab |
| CN116912188A (en) * | 2023-07-06 | 2023-10-20 | 钛玛科（北京）工业科技有限公司 | Method, device, equipment and storage medium for extracting boundary cap hole of lithium battery |
| WO2023206020A1 (en) * | 2022-04-25 | 2023-11-02 | 宁德时代新能源科技股份有限公司 | Overhang measurement method and apparatus for battery electrode plate, and device and storage medium |
-
2023
- 2023-11-14 CN CN202311508420.6A patent/CN117232425B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254719A (en) * | 2002-03-04 | 2003-09-10 | Nitto Denko Corp | Method of inspecting coating area |
| CN107941805A (en) * | 2017-12-01 | 2018-04-20 | 无锡先导智能装备股份有限公司 | Battery core quality determining method |
| CN113526066A (en) * | 2021-06-30 | 2021-10-22 | 广东利元亨智能装备股份有限公司 | Pole piece machining deviation rectifying method, deviation rectifying device and computer readable storage medium |
| CN114037657A (en) * | 2021-10-12 | 2022-02-11 | 上海电机学院 | Lithium battery tab defect detection method combining region growth and annular correction |
| CN114018160A (en) * | 2021-11-09 | 2022-02-08 | 北京深点视觉科技有限公司 | Lug imaging device and lug size detection method |
| WO2023206020A1 (en) * | 2022-04-25 | 2023-11-02 | 宁德时代新能源科技股份有限公司 | Overhang measurement method and apparatus for battery electrode plate, and device and storage medium |
| CN116168082A (en) * | 2022-12-29 | 2023-05-26 | 凌云光技术股份有限公司 | Positioning method and positioning device for tab |
| CN115790384A (en) * | 2023-02-13 | 2023-03-14 | 钛玛科（北京）工业科技有限公司 | Polishing imaging method and device based on gravure coating |
| CN116912188A (en) * | 2023-07-06 | 2023-10-20 | 钛玛科（北京）工业科技有限公司 | Method, device, equipment and storage medium for extracting boundary cap hole of lithium battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117232425A (en) | 2023-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113538430B (en) | Pole piece defect detection method, device, equipment and medium based on difference | |
| CN114764804A (en) | Lithium battery pole piece defect detection method, device, equipment and storage medium | |
| KR20240050461A (en) | Method, apparatus and computer device for detecting defects in battery electrode sheet insulating coating layer | |
| CN104537650A (en) | Polarity direction judging method and device for aluminum electrolytic capacitor | |
| CN117232425B (en) | Method, device, equipment and medium for measuring cutting depth of anode material of lithium battery | |
| CN117109447B (en) | Self-adaptive tab width detection method, device and equipment | |
| CN115205198A (en) | Method, system and equipment for detecting quality of tab and storage medium | |
| CN113654493A (en) | Quality detection method and system for laminated soft package lithium battery | |
| CN117541585B (en) | Method and device for detecting exposed foil defect of lithium battery pole piece | |
| CN114549393B (en) | Image labeling method, device, equipment and computer storage medium | |
| CN115861311B (en) | Method for detecting a slot mark, controller and computer-readable storage medium | |
| CN116912188A (en) | Method, device, equipment and storage medium for extracting boundary cap hole of lithium battery | |
| CN113744269B (en) | Method and device for detecting welding quality of cylindrical battery cell, electronic equipment and storage medium | |
| CN116739997A (en) | X-ray imaging-based online imaging analysis method for lithium battery | |
| CN117372663A (en) | Method, device, equipment and storage medium for supplementing log end face shielding | |
| CN115797440A (en) | Battery cell positioning method, controller and computer readable storage medium | |
| CN116342559A (en) | Current collecting disc welding quality detection method and device, electronic equipment and storage medium | |
| CN106127793B (en) | A kind of extracting method of battery anodic-cathodic profile | |
| CN111968090B (en) | Automatic xy-cutter eccentricity detection method, equipment and storage medium | |
| CN117974632B (en) | Lithium battery CT cathode-anode alignment detection method based on segmentation large model | |
| CN117570852B (en) | Method, device and equipment for detecting polar lug vertex coordinates | |
| CN113120005B (en) | Lower opening positioning self-checking method and device based on hyperbolic cabin segment construction and medium | |
| CN117152444B (en) | Equipment data acquisition method and system for lithium battery industry | |
| CN115457273A (en) | Battery cell pole piece segmentation method, device, equipment and storage medium | |
| CN117420152B (en) | Visual inspection method, visual inspection device, computer equipment and computer readable storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |