WO2023206020A1 - 电池极片的Overhang检测方法、装置、设备、存储介质 - Google Patents

电池极片的Overhang检测方法、装置、设备、存储介质 Download PDF

Info

Publication number
WO2023206020A1
WO2023206020A1 PCT/CN2022/089070 CN2022089070W WO2023206020A1 WO 2023206020 A1 WO2023206020 A1 WO 2023206020A1 CN 2022089070 W CN2022089070 W CN 2022089070W WO 2023206020 A1 WO2023206020 A1 WO 2023206020A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole piece
edge
overhang
area
cathode
Prior art date
Application number
PCT/CN2022/089070
Other languages
English (en)
French (fr)
Inventor
段彭飞
陈琪
王建磊
戴亚
雷扬
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to PCT/CN2022/089070 priority Critical patent/WO2023206020A1/zh
Priority to CN202280042066.XA priority patent/CN117501507A/zh
Priority to KR1020247008467A priority patent/KR102667112B1/ko
Publication of WO2023206020A1 publication Critical patent/WO2023206020A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/028—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring lateral position of a boundary of the object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/13—Edge detection
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • 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

Definitions

  • the present application relates to the technical field of battery detection, specifically, to an Overhang detection method, device, equipment and storage medium for battery pole pieces.
  • the lamination machine is used for the lamination forming process of the battery. It can composite the cathode, anode and separator of the battery. For composite electrode pieces, it is necessary to measure the size of the Overhang (referring to the length and width of the negative electrode piece beyond the positive and negative electrode pieces) to determine whether the composite electrode piece meets the requirements.
  • the existing Overhang measurement technology uses the traditional fixed area straight line fitting scheme to locate each pole piece edge in the fixed area, and then determines the Overhang measurement value based on the positioning results of each pole piece edge. In this way, the positioning method relies on a fixed area and has poor flexibility; due to the poor flexibility, the adaptability is also poor in practical applications.
  • the purpose of this application is to provide an Overhang detection method, device, equipment, and storage medium for battery pole pieces to improve the flexibility and adaptability of Overhang measurement.
  • this application provides a method for overhang detection of battery pole pieces, which includes: acquiring an image of a battery pole piece; determining the positions of multiple pole piece edges in the image; wherein the multiple pole piece edges are The pole piece edge related to the Overhang measurement value corresponding to the image; the position of each pole piece edge is determined based on the area where each pole piece edge is located, and the area where each pole piece edge is located is a dynamically determined area; according to the The positions of the plurality of pole piece edges determine the Overhang measurement value corresponding to the image.
  • each pole piece edge related to the Overhang measurement value corresponding to the image it is determined based on the area where each pole piece edge is located; and the area where each pole piece edge is located is a dynamically determined area.
  • the traditional fixed-area fitting straight line solution is no longer used, but the position of each pole piece edge is determined based on the dynamically determined area. Since the area is no longer fixed, the positioning of each pole piece edge is also more precise. Flexible, for example: there is no need to pre-demarcate the area where each pole piece edge is located.
  • this method can improve the flexibility of positioning of each pole piece edge, thereby improving the flexibility of Overhang measurement; on the basis of improved flexibility, the adaptability of Overhang measurement also increases accordingly, for example: positioning in a fixed area is not considered In this case, it can be adapted to Overhang measurement in more complex environments.
  • the area where each pole piece edge is located is an area determined based on preset area parameter information, or an area determined based on the position of one or more pole piece edges.
  • the area where each pole piece edge is located can be determined based on preset regional parameter information or based on the position of one or more pole piece edges, making the positioning method of each pole piece edge more flexible.
  • the image includes: a first pole piece edge and a second pole piece edge; the area where the first pole piece edge is located is determined based on preset area parameter information, and the second pole piece edge is located The area where the blade edge is located is determined based on the position of the first pole piece edge and a first positional relationship; the first positional relationship is the positional relationship between the first pole piece edge and the second pole piece edge.
  • the area where the first pole piece edge is located can be determined based on the preset area parameters, and the area where the second pole piece edge is located is based on the first pole piece edge.
  • the relationship between the position of the edge and the first position is determined, that is, the area where the pole piece edge is located can be flexibly determined in combination with the position of one pole piece edge, thereby improving the flexibility of pole piece edge positioning.
  • the image further includes: a third pole piece edge; the area where the third pole piece edge is located is based on the position of the first pole piece edge, the position of the second pole piece edge The position and the second position relationship are determined; the second position relationship is the position relationship between the first pole piece edge, the second pole piece edge and the third pole piece edge.
  • the area where the third pole piece edge is located is determined by combining the position of the first pole piece edge, the position of the second pole piece edge and the second position relationship. That is, the area where the pole piece edge is located can be determined by combining at least two pole pieces. The position of each pole piece edge is flexibly determined to improve the flexibility of pole piece edge positioning.
  • the image further includes: a fourth pole piece edge; the area where the fourth pole piece edge is located is based on the position of the first pole piece edge, the position of the second pole piece edge The position, the position of the third pole piece edge and the third position relationship are determined; the third position relationship is the first pole piece edge, the second pole piece edge, the third pole piece edge and all Describe the positional relationship between the edges of the fourth pole piece.
  • the area where the fourth pole piece edge is located is determined by combining the position of the first pole piece edge, the position of the second pole piece edge, the position of the third pole piece edge and the third position relationship, so that the pole piece edge
  • the area can be flexibly determined by combining the positions of at least three pole piece edges to improve the flexibility of pole piece edge positioning.
  • the first pole piece side is a vertical cathode side
  • the second pole piece side includes: a vertical anode side and a horizontal cathode side
  • the third pole piece side includes: a horizontal cathode side.
  • the ceramic side and the horizontal diaphragm side, the fourth pole piece side is the horizontal anode side.
  • the pole piece edges related to Overhang's measurement values include: vertical cathode edge, vertical anode edge, horizontal cathode edge, horizontal cathode ceramic edge, horizontal diaphragm edge and horizontal anode edge, positioned based on the dynamic area In this way, the flexible positioning of these pole piece edges can be realized, and the measurement value of Overhang can be flexibly determined.
  • determining the measurement value of Overhang corresponding to the image based on the positions of multiple pole piece edges includes: determining the cathode based on the position of the horizontal cathode ceramic edge and the position of the horizontal diaphragm edge. The distance between the ceramic pole piece and the diaphragm; the distance between the anode and the diaphragm is determined according to the position of the horizontal anode side and the position of the horizontal diaphragm side; the distance between the anode and the diaphragm is determined according to the position of the horizontal cathode side and the position of the horizontal anode side.
  • the position determines the first spacing between the cathode and the anode; the second spacing between the cathode and the anode is determined according to the position of the vertical cathode side and the position of the vertical anode side; and the second spacing between the cathode and the anode is determined according to the position of the horizontal anode side and
  • the position of the horizontal cathode ceramic edge determines the distance between the anode and the cathode ceramic pole piece; the width of the cathode plate is determined according to the position of the vertical cathode edge; the width of the anode plate is determined according to the position of the vertical anode edge; The distance between the cathode ceramic pole piece and the diaphragm, the distance between the anode and the diaphragm, the first distance, the second distance, the distance between the anode and the cathode ceramic pole piece, the cathode The plate width and the anode plate width determine the measurement of Overhang corresponding to the image.
  • the image includes multiple images of the battery pole piece, and the multiple images respectively correspond to different areas of the battery pole piece; the detection method further includes: based on the multiple images, respectively The corresponding measurement value of Overhang and the positional relationship between the different areas determine the measurement value of Overhang corresponding to the battery pole piece.
  • the multiple images respectively correspond to the four corner areas of the battery pole piece.
  • the four corner areas of the battery pole pieces are symmetrical, which not only ensures the versatility or consistency of each image processing method, but also facilitates the determination of the Overhang measurement value of the battery pole piece based on the Overhang measurement values of multiple images. .
  • the determination process of the position of the pole piece edge includes: determining the edge transition point in the area where the pole piece edge is located based on the position of the area where the pole piece edge is located. The position of the pole piece edge is determined based on the position of the edge transition point and the straight line fitting algorithm.
  • the position of the edge transition point in the area where the pole piece edge is located is first determined, and then the position of the pole piece edge is realized based on the position of the edge transition point and the straight line fitting algorithm. effective and accurate positioning.
  • the present application provides an Overhang detection device for battery pole pieces, including: each method for implementing the Overhang detection method of battery pole pieces described in the first aspect and any possible implementation of the first aspect. functional module.
  • the present application provides an Overhang detection device for battery pole pieces, including: a processor; and a memory communicatively connected to the processor; the memory stores instructions that can be executed by the processor, and the The instructions are executed by the processor, so that the processor can perform the overhang detection method of the battery pole piece as described in the first aspect and any possible implementation of the first aspect.
  • the present application provides a computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the computer program executes any one of the first aspect and the first aspect.
  • Figure 1 is a schematic structural diagram of an image acquisition device provided by an embodiment of the present application.
  • Figure 2 is a first example of an image provided by an embodiment of the present application.
  • Figure 3 is a second example of an image provided by an embodiment of the present application.
  • Figure 4 is a flow chart of the Overhang detection method of battery pole pieces provided by the embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of an Overhang detection device for battery pole pieces provided by an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of an Overhang detection device for battery pole pieces provided by an embodiment of the present application.
  • Icon 100-image acquisition device; 101-camera; 102-light source; 103-plywood; 600-overhang detection device of battery pole piece; 510-acquisition module; 520-position determination module; 530-measurement value determination module; 600- Overhang testing equipment for battery pole pieces; 610-processor; 620-memory.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • multiple refers to more than two (including two).
  • multiple groups refers to two or more groups (including two groups), and “multiple pieces” refers to It is more than two pieces (including two pieces).
  • Batteries are not only used in energy storage power systems such as hydraulic, thermal, wind and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles and electric cars, as well as in many fields such as military equipment and aerospace. As the application fields of power batteries continue to expand, their market demand is also constantly expanding.
  • battery processes mainly include winding and lamination, which involve combining the cathode, anode and separator of the battery to obtain a composite electrode piece.
  • the Overhang size needs to be measured.
  • the traditional fixed area straight line fitting scheme is used to locate each pole piece edge in the fixed area, and then determine the Overhang measurement value based on the positioning results of each pole piece edge. For example: collecting an image of a battery pole piece, the area where the anode edge is located and the area where the cathode edge is located are pre-fixed areas in the image; then perform straight line fitting in the fixed area where the anode edge is located, and locate the anode edge; and Perform straight line fitting in the fixed area where the cathode edge is located to locate the cathode edge; finally, use the positioning results of the anode edge and the positioning results of the cathode edge to determine the Overhang measurement value.
  • this measurement method can realize the measurement of Overhang, due to its use of a fixed area for pole piece edge positioning, the measurement of Overhang has poor flexibility and poor adaptability.
  • this measurement method is only suitable for offline measurement and cannot be used for online measurement in the battery process.
  • the image collection method of this measurement method is limited. It can only collect images based on a fixed area, and cannot flexibly change the image collection method, so it cannot be applied to complex environments.
  • the essential reason why the above-mentioned measurement method has poor flexibility and adaptability is: positioning based on a fixed area. For example: Since positioning needs to be based on a fixed area, if online measurement is used, the fixed area may not be accurately positioned, so offline measurement can only be used. Another example: Since positioning needs to be based on a fixed area, the collected images must include a fixed area. Therefore, images can only be collected based on a fixed area, and the image collection method cannot be changed arbitrarily and applied to complex environments.
  • each pole edge no longer relies on fixed areas, but on flexible areas, it will not be restricted by fixed areas, greatly improving flexibility and adaptability.
  • the applicant designed a technical solution to reduce the limitations of Overhang measurement and improve the flexibility and adaptability of Overhang measurement.
  • the traditional fixed-area fitting straight line solution is no longer used, but the position of each pole piece edge is determined based on a dynamically determined area. Since the area is no longer fixed, the positioning of each pole piece edge is also more flexible. For example, there is no need to pre-define the area where each pole piece edge is located, and it is suitable for both offline and online measurements.
  • this method can improve the flexibility of positioning of each pole piece edge, thereby improving the flexibility of Overhang measurement; on the basis of improved flexibility, the adaptability of Overhang measurement also increases accordingly, for example: positioning in a fixed area is not considered In this case, the image collection method is also more flexible and can be adapted to Overhang measurements in more complex environments.
  • the technical solution provided by the embodiment of the present application can be used in the battery manufacturing process, including the lamination process and the winding process.
  • the Overhang of the composite battery pole piece is measured.
  • the measured value of the Overhang can be used to determine whether the composite battery pole piece meets the specification.
  • the technical solutions provided by the embodiments of this application can be applied to the Overhang detection system of battery pole pieces.
  • the detection system can be a part of the laminating machine or winding machine, or it can be a part independent of the laminating machine or winding machine. .
  • the battery pole piece Overhang detection system may include a battery pole piece Overhang detection device and an image acquisition device, and there is a communication connection between the battery pole piece Overhang detection device and the image acquisition device.
  • the image acquisition device is used to collect images of battery pole pieces
  • the Overhang detection equipment is used to control the image acquisition device, and implement Overhang measurement based on the images collected by the image acquisition device.
  • the control of the image acquisition device can also be implemented by other control devices, and is not limited to being implemented by the Overhang detection device.
  • Overhang detection equipment can be understood as an intelligent device with data processing capabilities and data storage capabilities, or an intelligent controller, an intelligent processor, etc.
  • FIG. 1 is a schematic structural diagram of an image acquisition device provided by an embodiment of the present application.
  • the image acquisition device includes: a camera 101 , a light source 102 and a splint 103 .
  • the technical solution provided by the embodiment of the present application is used to perform Overhang detection on the compounded pole pieces.
  • the battery pole pieces After the battery pole pieces are compounded, they will be sent to the next processing node, that is, the compounded battery pole pieces Move along the preset movement direction.
  • the pole piece structure is: cathode, separator, anode, separator, cathode.
  • the cathodes are separate sheet-like structures.
  • a part of the splint 103 is set on the front side of the pole piece, and the other part is set on the reverse side of the pole piece.
  • the corresponding control device controls the two parts of the splint 103 to clamp the pole piece to achieve image stability. collection.
  • the camera 101 may include a front camera module and/or a rear camera module (a front camera module and a rear camera module are included in FIG. 1 ).
  • the light source 102 when the camera 101 includes a front camera module, the light source 102 includes the light source of the front camera module; when the camera 101 includes a rear camera module, the light source 102 includes the light source of the rear camera module; the camera 101 includes a front camera module and a rear camera module.
  • the light source 102 when using a camera module, includes the light source of the front camera module and the light source of the rear camera module.
  • the light source of the front camera module includes the front light source and the back light source
  • the light source of the back camera module also includes the front light source and the back light source.
  • the light source 102 is used to light the pole piece so that the camera can collect images.
  • the front light source is used for front lighting, and the reverse light source is used for back lighting. It can be a flashlight, lighting, etc., which is not limited here.
  • the front camera module and/or the back camera module can be equipped with one camera or multiple cameras.
  • the camera 101 is used to collect a complete image of the battery pole piece corresponding to the above-mentioned piece of cathode.
  • the camera 101 can be a large field of view line array camera that meets the frame rate requirements.
  • the multiple cameras 101 are respectively used to collect images of different fields of view of the battery pole piece corresponding to one cathode, for example, images of the four corner areas.
  • the multiple cameras 101 may be high frame rate small field of view area scan cameras.
  • the collected images can be as shown in Figure 2.
  • Figure 2 multiple fields of view are included, and images of multiple fields of view can be collected by multiple cameras. ;
  • the collected images are images of different fields of view based on the overall image in Figure 2. As shown in Figure 3, it is an image of field of view 3. It should be noted that if there is only one camera 101, there should be only one field of view, which includes a complete image of the pole piece; the field of view marked in Figure 2 is only to facilitate understanding of the correspondence between Figure 3 and Field of View 3.
  • Figure 4 is a flow chart of the Overhang detection method of the battery pole piece provided by the embodiment of the present application.
  • the detection method includes:
  • Step 410 Obtain an image of the battery pole piece.
  • Step 420 Determine the positions of multiple pole piece edges in the image.
  • the plurality of pole piece edges are pole piece edges related to the Overhang measurement value corresponding to the image; the position of each pole piece edge is determined based on the area where each pole piece edge is located, and the area where each pole piece edge is located is a dynamically determined area.
  • Step 430 Determine the Overhang measurement value corresponding to the image based on the positions of multiple pole piece edges.
  • the image of the battery pole piece can be an image of a complete battery pole piece, or it can be an image of different areas (different fields of view) of the battery pole piece.
  • the image in step 410 may be one image or multiple images. Whether it is one image or multiple images, the corresponding image processing methods are the same.
  • step 410 images sent by the front camera module and/or the rear camera module are received.
  • step 420 the positions of multiple pole piece edges in the image are determined, and the multiple pole piece edges are pole piece edges related to the Overhang measurement value corresponding to the image.
  • the images acquired in step 410 may be multiple images, the multiple images correspond to different fields of view of the battery pole pieces.
  • the Overhang measurement value determined based on the image cannot represent the final Overhang measurement value.
  • the final Overhang measurement value needs to be determined based on the Overhang measurement values determined separately from multiple images. Therefore, in step 420, multiple Overhang measurement values will be determined.
  • a pole edge is defined as the pole edge associated with the corresponding Overhang measurement of the image.
  • the position of each pole piece edge is determined based on the area where each pole piece edge is located, and the area where each pole piece edge is located is a dynamically determined area. Since the dynamic determination of the regions where some pole piece edges are located may need to be combined with the position determination of other pole pieces, in this embodiment of the present application, the determination of the region and the positioning based on the region are integrated into step 420. In fact, it should be understood that every time the area where a pole piece edge is located is determined, the position of the pole piece edge will be determined based on the area where the pole piece edge is located. That is, during the positioning process of the pole piece edge, along with the pole piece edge Dynamic determination of edge regions.
  • step 430 the Overhang measurement value corresponding to the image is determined based on the positions of the plurality of pole piece edges.
  • step 430 may also have multiple implementation modes, which will be introduced in detail in subsequent embodiments.
  • each pole piece edge related to the Overhang measurement value corresponding to the image when determining the position of each pole piece edge related to the Overhang measurement value corresponding to the image, it is determined based on the area where each pole piece edge is located; and the area where each pole piece edge is located is a dynamically determined area. .
  • the traditional fixed-area fitting straight line solution is no longer used, but the position of each pole piece edge is determined based on the dynamically determined area. Since the area is no longer fixed, the positioning of each pole piece edge is also more precise. Flexible, for example: there is no need to pre-demarcate the area where each pole piece edge is located.
  • this method can improve the flexibility of positioning of each pole piece edge, thereby improving the flexibility of Overhang measurement; on the basis of improved flexibility, the adaptability of Overhang measurement also improves, for example: when positioning in a fixed area is not considered In this case, it can be adapted to Overhang measurements in more complex environments.
  • the area where each pole piece edge is located is an area determined based on preset area parameter information, or an area determined based on the position of one or more pole piece edges.
  • the preset area parameter information is the parameter information used to locate the area, such as: pixel coordinates of area boundary points, area length, area width, etc.
  • the area where the first pole piece edge whose position is to be determined among the plurality of pole piece edges is located is determined based on preset regional parameter information, and the pole piece edges whose positions are to be determined after the first pole piece edge are The area is determined based on the position of the first pole piece edge whose position is to be determined, or combined with the positions of multiple pole piece edges whose positions have been determined.
  • the area where each pole piece edge is located can be determined based on preset area parameter information or based on the position of one or more pole piece edges, making the positioning method of each pole piece edge more flexible.
  • the image includes: a first pole piece edge and a second pole piece edge; the area where the first pole piece edge is located is determined based on preset area parameter information, and the area where the second pole piece edge is located is determined based on The position of the first pole piece edge is determined by the first positional relationship; the first positional relationship is the positional relationship between the first pole piece edge and the second pole piece edge.
  • the first pole piece edge can be understood as the first pole piece edge whose position is to be determined
  • the second pole piece edge can be understood as the second pole piece edge whose position is to be determined.
  • the position determination process includes: determining the area where the first pole piece edge is located based on the preset area parameter information; determining the location of the first pole piece edge based on the area where the first pole piece edge is located. .
  • the position determination process includes: determining the area where the second pole piece edge is located based on the position of the first pole piece edge and the first position relationship; determining the second pole piece edge based on the area where the second pole piece edge is located. edge position.
  • the first positional relationship is the positional relationship between the first pole piece edge and the second pole piece edge, for example: the first pole piece edge is to the left, above the second pole piece edge, etc. Based on this positional relationship, after the position of the first pole piece edge is determined, the area where the second pole piece edge is located can also be determined. For example: if the first pole piece edge is above the second pole piece edge, then the area where the second pole piece edge is located is the area below the first pole piece edge.
  • the area where the first pole piece edge is located can be determined based on the preset area parameters, and the area where the second pole piece edge is located is based on the first
  • the position of the pole piece edge is determined in relation to the first position, that is, the area where the pole piece edge is located can be flexibly determined based on the position of one pole piece edge, thereby improving the flexibility of pole piece edge positioning.
  • the image may also include: a third pole piece edge; the area where the third pole piece edge is located is determined based on the position of the first pole piece edge, the position of the second pole piece edge, and the second position relationship. ; The second positional relationship is the positional relationship between the first pole piece edge, the second pole piece edge and the third pole piece edge.
  • the third pole piece edge can be understood as the pole piece edge whose position is to be determined after the second pole piece edge, and the area where the pole piece edge is located needs to be determined based on the positions of the first pole piece edge and the second pole piece edge.
  • the process of determining the position of the third pole piece edge includes: determining the area where the third pole piece edge is located based on the position of the first pole piece edge, the position of the second pole piece edge and the second position relationship; The area where the chip edge is located determines the position of the third pole chip edge.
  • the second positional relationship is the positional relationship between the first pole piece edge, the second pole piece edge and the third pole piece edge.
  • the third pole piece is below the first pole piece and to the left of the second pole piece.
  • the area where the third pole piece edge is located can also be determined. For example, if the third pole edge is below the first pole edge and to the left of the second pole edge, then the area where the third pole edge is located is below the first pole edge and is on the left of the second pole edge. To the left of where the edge of the diode is located.
  • the area where the third pole piece edge is located is determined by combining the position of the first pole piece edge, the position of the second pole piece edge and the second position relationship. That is, the area where the pole piece edge is located can be determined by combining The positions of at least two pole piece edges are flexibly determined to improve the flexibility of pole piece edge positioning.
  • the image may also include: the fourth pole piece edge; the area where the fourth pole piece edge is located is based on the position of the first pole piece edge, the position of the second pole piece edge, the third pole piece edge The position of the edge and the third position relationship are determined; the third position relationship is the position relationship between the first pole piece edge, the second pole piece edge, the third pole piece edge and the fourth pole piece edge.
  • the fourth pole piece edge can be understood as the pole piece edge whose position is to be determined after the third pole piece edge, and the area where this pole piece edge is located combines the position of the first pole piece edge and the position of the second pole piece edge. , the relationship between the position of the third pole piece edge and the third position is determined.
  • the process of determining the position of the fourth pole piece edge includes: determining the location of the fourth pole piece edge based on the position of the first pole piece edge, the position of the second pole piece edge, the position of the third pole piece edge and the third position relationship. area; determine the position of the fourth pole edge according to the area where the fourth pole edge is located.
  • the third positional relationship is the positional relationship between the first pole piece edge, the second pole piece edge, the third pole piece edge and the fourth pole piece edge.
  • the fourth pole piece is below the first pole piece, to the left of the second pole piece, and above the third pole piece.
  • the area where the fourth pole piece edge is located can also be determined.
  • the area where the fourth pole edge is located is below the location of the first pole edge, to the left of the location of the second pole edge, and above the location of the third pole edge.
  • the area where the fourth pole piece edge is located is determined based on the position of the first pole piece edge, the position of the second pole piece edge, the position of the third pole piece edge and the third position relationship, so that the pole piece edge is
  • the area where the blade edge is located can be flexibly determined by combining the positions of at least three pole piece edges, thereby improving the flexibility of pole piece edge positioning.
  • the area where the pole piece edges are located can also be determined based on the positions of more pole piece edges, which is not limited here.
  • the first pole edge is a vertical cathode edge
  • the second pole edge includes: a vertical anode edge and a horizontal cathode edge
  • the third pole edge includes: a horizontal cathode ceramic edge and a horizontal separator.
  • the side of the fourth pole piece is the horizontal anode side.
  • each pole piece edge can be used as the implementation of each pole piece edge corresponding to the image shown in Figure 3. That is, when the image in step 410 is the image shown in Figure 3, each pole piece edge is the implementation of this implementation. Each of the poles described above.
  • step 420 the area where the vertical cathode edge is located is first determined based on the preset area parameter information, and then the position of the vertical cathode edge is determined based on the area where the vertical cathode edge is located.
  • the area where the horizontal cathode edge is located is determined based on the position of the vertical cathode edge and the positional relationship between the vertical cathode edge and the horizontal cathode edge, and the position of the horizontal cathode edge is determined based on the area where the horizontal cathode edge is located.
  • the level is determined based on the position of the vertical cathode edge, the position of the vertical anode edge and/or the horizontal cathode edge, and the positional relationship between the vertical cathode edge, the vertical anode edge and/or the horizontal cathode edge and the horizontal cathode ceramic edge.
  • the area where the cathode ceramic edge is located determines the position of the horizontal cathode ceramic cup based on the area where the horizontal cathode ceramic edge is located.
  • the position determination process of the horizontal diaphragm edge refers to the position determination process of the horizontal cathode ceramic edge, which will not be described again here.
  • the vertical cathode side determines the area where the horizontal anode edge is located , determine the position of the horizontal anode edge according to the area where the horizontal anode edge is located.
  • the pole piece edges related to the measurement value of Overhang include: vertical cathode edge, vertical anode edge, horizontal cathode edge, horizontal cathode ceramic edge, horizontal diaphragm edge and horizontal anode edge, based on the dynamic area.
  • the positioning method realizes the flexible positioning of these pole piece edges, thereby realizing the flexible determination of the measurement value of Overhang.
  • step 430 includes: determining the distance between the cathode ceramic pole piece and the separator according to the position of the horizontal cathode ceramic edge and the position of the horizontal separator edge; The position of the horizontal anode side and the position of the horizontal diaphragm side determine the distance between the anode and the diaphragm; the first distance between the cathode and the anode is determined according to the position of the horizontal cathode side and the position of the horizontal anode side; according to the position of the vertical cathode side and the position of the vertical anode edge to determine the second distance between the cathode and the anode; determine the distance between the anode and the cathode ceramic pole piece according to the position of the horizontal anode edge and the position of the horizontal cathode ceramic edge; determine the second distance between the cathode and the anode according to the position of the vertical cathode edge Determine the width of the
  • This implementation can be used as an implementation for determining the measurement value of Overhang corresponding to the image shown in FIG. 3 , that is, when the image in step 410 is the image shown in FIG. 3 , the method for determining the measurement value of the corresponding Overhang. .
  • the measurement value of Overhang may not refer to a specific value, but to the value of related measurement items, that is, to the above-mentioned spacing between the cathode ceramic pole piece and the separator, the anode and the separator. Any one or more of the spacing between separators, the first spacing, the second spacing, the spacing between the anode and the cathode ceramic pole pieces, the width of the cathode piece and the width of the anode piece.
  • the measurement value of the integrated Overhang can be compared with the measurement value of the standard integrated Overhang to evaluate whether the composite battery pole piece meets the specifications.
  • Each measurement value can also be compared with the corresponding standard measurement value, and multiple comparison results can be combined to evaluate whether the battery pole piece meets the specifications.
  • the distance between the edge of the cathode ceramic pole piece and the separator may be the distance in the vertical direction between the edge of the cathode ceramic pole piece and the separator.
  • the distance between the anode and the separator may be the distance between the anode and the separator in the vertical direction.
  • the first distance between the cathode and the anode may be the distance between the horizontal cathode side and the horizontal anode side in the vertical direction.
  • the second distance between the cathode and the anode may be the distance between the vertical cathode side and the vertical anode side in the horizontal direction.
  • the distance between the anode and cathode ceramic pole pieces may be the vertical distance between the horizontal anode edge and the cathode ceramic pole edge.
  • the width of the cathode sheet is the distance between the position of the vertical cathode edge in an image symmetrical to FIG. 3 (image with symmetrical field of view) and the position of the vertical cathode edge in FIG. 3 .
  • the width of the anode sheet is the distance between the position of the vertical anode side in the image that is symmetrical to FIG. 3 and the position of the vertical anode side in FIG. 3 .
  • the width of the cathode sheet can be determined directly based on the positions of the vertical cathode edges on both sides, and the width of the cathode sheet can be determined based on the vertical anode edges on both sides.
  • Anode plate width can be determined directly based on the positions of the vertical cathode edges on both sides, and the width of the cathode sheet can be determined based on the vertical anode edges on both sides.
  • the image in step 410 may include multiple images, which correspond to different areas of the battery pole piece.
  • the detection method also includes: The measured value of Overhang corresponding to the battery pole piece is determined based on the measured values of Overhang corresponding to the multiple images and the positional relationship between different areas.
  • the integration method of the Overhang measurement values corresponding to different images can be determined.
  • the measurement values corresponding to different images may be integrated in a manner such as adding or adding and then dividing by a preset value.
  • the measurement values corresponding to different images may be integrated in a manner such as: weighted average, weighted sum, etc.
  • the specific integration method can be combined with specific application scenarios and set flexibly, and is not limited here.
  • the integration method to be adopted can be determined through advance data simulation, data testing, etc.
  • images of different areas of the battery pole pieces are collected, and then the corresponding Overhang measurement values are determined respectively.
  • the image processing method is more flexible; on the other hand, Fine-grained image processing results in higher precision, and the final measurement results are more accurate.
  • the multiple images respectively correspond to the four corner areas of the battery pole piece.
  • the four corner areas of the battery pole piece that is, the images of the battery pole piece in the four corner fields of view are collected.
  • the image collected in one of the fields of view can be referred to the aforementioned figure 3.
  • the four corner areas of the battery pole pieces are symmetrical, which not only ensures the versatility or consistency of each image processing method, but also facilitates the determination of the Overhang of the battery pole piece based on the measured values of the Overhang of multiple images. Measurements.
  • multiple images may also correspond to any two diagonal areas of the battery pole piece, or the area where the designated position is located, etc., which are not limited in the embodiments of the present application.
  • the position determination process of the pole piece edge may include: determining the location of the pole piece edge based on the location of the area where the pole piece edge is located. The position of the edge transition point in the region; the position of the pole piece edge is determined based on the position of the edge transition point and the straight line fitting algorithm.
  • the positioning of the pole piece edges is achieved using straight line fitting.
  • the edge of the pole piece is a straight line in the image.
  • the edge transition point can be located in the area where the straight line is located by binary whitening to find black.
  • the positioning is The location of the edge transition point is the approximate location of the straight line.
  • the edge transition points may not be on a straight line, it is also necessary to use a straight line fitting algorithm to perform straight line fitting on these edge transition points to accurately locate the position of the pole piece edge.
  • the straight line fitting algorithm may be the least squares method. Of course, other straight line fitting algorithms can also be used, which are not limited here.
  • a rough regional positioning can be performed based on the area where the first pole piece edge is located to find the area of interest, and then Determine edge transition points based on regions of interest.
  • the position of the edge transition point in the area where the pole piece edge is located is first determined, and then the pole piece edge is realized based on the position of the edge transition point and the straight line fitting algorithm. Effective and accurate positioning of the location.
  • pole piece edge based on the area where the pole piece edge is located, other feasible linear positioning methods can also be used to position the pole piece edge. For example, refer to the method of fitting the position of the pole piece edge based on a fixed area, which will not be discussed here. limited.
  • the embodiment of the present application also provides an Overhang detection device 500 for battery pole pieces.
  • the Overhang detection device 500 for battery pole pieces corresponds to the aforementioned Overhang detection method for battery pole pieces and includes: an acquisition module 510, a position Determination module 520 and measurement value determination module 530.
  • the acquisition module 510 is used to acquire the image of the battery pole piece; the position determination module 520 is used to determine the positions of multiple pole piece edges in the image; wherein the multiple pole piece edges are corresponding to the image. Overhang the pole piece edge related to the measured value; the position of each pole piece edge is determined based on the area where each pole piece edge is located, and the area where each pole piece edge is located is a dynamically determined area; the measurement value determination module 530 is used to The Overhang measurement value corresponding to the image is determined according to the positions of the plurality of pole piece edges.
  • the measurement value determination module 530 is specifically used to: determine the distance between the cathode ceramic pole piece and the separator according to the position of the horizontal cathode ceramic edge and the position of the horizontal diaphragm edge; The position of the side and the position of the horizontal diaphragm side determine the distance between the anode and the diaphragm; the first distance between the cathode and the anode is determined according to the position of the horizontal cathode side and the position of the horizontal anode side; according to the The position of the vertical cathode side and the position of the vertical anode side determine the second distance between the cathode and the anode; the anode and the cathode ceramic pole piece are determined based on the position of the horizontal anode side and the position of the horizontal cathode ceramic side.
  • the width of the cathode sheet is determined based on the position of the vertical cathode edge; the width of the anode sheet is determined based on the position of the vertical anode edge; the width of the anode sheet is determined based on the distance between the cathode ceramic pole piece and the separator, the anode
  • the distance between the diaphragm, the first distance, the second distance, the distance between the anode and cathode ceramic pole pieces, the width of the cathode piece and the width of the anode piece determine the Overhang corresponding to the image. measurement value.
  • the measurement value determination module 530 is further configured to determine the measurement value of the Overhang corresponding to the battery pole piece based on the measurement values of the Overhang corresponding to the multiple images and the positional relationship between the different areas.
  • the position determination module 520 is specifically used to: determine the position of the edge transition point in the area where the pole piece edge is located based on the location of the area where the pole piece edge is located; The position of the edge transition point and the straight line fitting algorithm determine the position of the pole piece edge.
  • the battery pole piece overhang detection device 500 corresponds to the battery pole piece overhang detection method
  • the implementation and technical effects of each functional module are also referred to the implementation and technical effects of the aforementioned detection method, and will not be repeated here.
  • the embodiment of the present application also provides an Overhang detection device 600 for battery pole pieces, which can be used as the execution subject of the aforementioned detection method, including: a processor 610; and a communication connection with the processor 610
  • the memory 620 stores instructions that can be executed by the processor 610, and the instructions are executed by the processor 610, so that the processor 610 can perform the overhang detection method of the battery pole piece described in the previous embodiment.
  • the communication connection between the processor 610 and the memory 620 can be realized through a communication bus.
  • the detection equipment may also include more components, and Figure 6 does not constitute a limitation on its structure.
  • An embodiment of the present application also provides a computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the overhang detection of the battery pole piece described in the previous embodiment is performed. method.
  • the disclosed devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some communication interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.
  • units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional module in each embodiment of the present application can be integrated together to form an independent part, each module can exist alone, or two or more modules can be integrated to form an independent part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

提供一种电池极片的Overhang检测方法、装置、设备、存储介质。电池极片的Overhang检测方法，包括：获取电池极片的图像；确定图像中的多个极片边的位置；其中，多个极片边为与图像对应的Overhang测量值相关的极片边；各个极片边的位置基于各个极片边所在的区域确定，各个极片边所在的区域为动态确定的区域；根据多个极片边的位置确定图像对应的Overhang测量值。检测方法用以提高Overhang测量的灵活性和适应性。

Description

电池极片的Overhang检测方法、装置、设备、存储介质 技术领域
本申请涉及电池检测技术领域，具体而言，涉及一种电池极片的Overhang检测方法、装置、设备、存储介质。
背景技术
叠片机，用于电池的叠片成形工艺，可以将电池的阴极、阳极以及隔膜进行复合。对于复合极片来说，需要进行Overhang(指负极极片长度和宽度方向多出正负极片之外的部分)尺寸的测量，以判断复合后的极片是否符合要求。
现有的Overhang测量技术，采用传统的固定区域拟合直线方案，在固定区域中定位各极片边，然后基于各极片边的定位结果确定Overhang测量值。这种方式，定位方式依靠固定的区域，灵活性较差；由于灵活性较差，在实际应用时，适应性也较差。
发明内容
本申请的目的在于提供一种电池极片的Overhang检测方法、装置、设备、存储介质，用以提高Overhang测量的灵活性和适应性。
第一方面，本申请提供一种电池极片的Overhang检测方法，包括：获取电池极片的图像；确定所述图像中的多个极片边的位置；其中，所述多个极片边为与所述图像对应的Overhang测量值相关的极片边；各个极片边的位置基于所述各个极片边所在的区域确定，所述各个极片边所在的区域为动态确定的区域；根据所述多个极片边的位置确定所述图像对应的Overhang测量值。
在本申请中，在确定与图像对应的Overhang测量值相关的各个极片边的位置时，基于各个极片边所在的区域确定；并且，各个极片边所在的区域为动态确定的区域。相较于现有技术，不再采用传统的固定区域的拟合直线方案，而是基于动态确定的区域确定各个极片边的位置，由于区域不再固定，各个极片边的定位也更为灵活，比如：无需预先划定各个极片边所在的区域。因此，这种方式可以提高各个极片边的定位的灵活性，进而提高Overhang测量的灵活性；在灵活性提高的基础上，Overhang测量的适应性也相应提高，比如：在不考虑固定区域定位的情况下，可以适应于更多复杂环境的Overhang测量。
作为一种可能的实现方式，所述各个极片边所在的区域为基于预设的区域参数信息确定的区域，或者为基于一个或者多个极片边的位置确定的区域。
在本申请中，各个极片边所在的区域可以基于预设的区域参数信息确定，也可以基于一个或者多个极片边的位置确定，使各个极片边的定位方式更为灵活。
作为一种可能的实现方式，所述图像中包括：第一极片边和第二极片边；所述第一极片边所在的区域基于预设的区域参数信息确定，所述第二极片边所在的区域基于所述第一极片边的位置和第一位置关系确定；所述第一位置关系为所述第一极片边和所述第二极片边之间的位置关系。
在本申请中，对于第一极片边和第二极片边来说，第一极片边所在的区域可以基于预设的区域参数确定，第二极片边所在的区域基于第一极片边的位置和第一位置关系确定，即，极片边所在的区域可以结合一个极片边的位置灵活确定，提高极片边定位的灵活性。
作为一种可能的实现方式，所述图像中还包括：第三极片边；所述第三极片边所在的区域基于所述第一极片边的位置、所述第二极片边的位置以及第二位置关系确定；所述第二位置关系为所述第一极片边、所述第二极片边和所述第三极片边之间的位置关系。
在本申请中，对于第三极片边所在的区域，结合第一极片边的位置、第二极片边的位置以及第二位置关系确定，即，极片边所在的区域可结合至少两个极片边的位置灵活确定，提高极片边定位的灵活性。
作为一种可能的实现方式，所述图像中还包括：第四极片边；所述第四极片边所在的区域基于所述第一极片边的位置、所述第二极片边的位置、所述第三极片边的位置以及第三位置关系确定；所述第三位置关系为所述第一极片边、所述第二极片边、所述第三极片边和所述第四极片边之间的位置关系。
在本申请中，对于第四极片边所在的区域，结合第一极片边的位置、第二极片边的位置、第三极片边的位置以及第三位置关系确定，使极片边所在区域可结合至少三个极片边的位置灵活确定，提高极片边定位的灵活性。
作为一种可能的实现方式，所述第一极片边为竖直阴极边，所述第二极片边包括：竖直阳极边和水平阴极边，所述第三极片边包括：水平阴极陶瓷边和水平隔膜边，所述第四极片边为水平阳极边。
在本申请中，与Overhang的测量值相关的极片边包括：竖直阴极边、竖直阳极边、水平阴极边、水平阴极陶瓷边、水平隔膜边以及水平阳极边，基于动态区域进行定位的方式，实现这些极片边的灵活定位，进而实现Overhang的测量值的灵活确定。
作为一种可能的实现方式，所述根据多个极片边的位置确定所述图像对应的Overhang的测量值，包括：根据所述水平阴极陶瓷边的位置和所述水平隔膜边的位置确定阴极陶瓷极片与隔膜之间的间距；根据所述水平阳极边的位置和所述水平隔膜边的位置确定阳极与隔膜之间的间距；根据所述水平阴极边的位置和所述水平阳极边的位置确定阴极与阳极之间的第一间距；根据所述竖直阴极边的位置和所述竖直阳极边的位置确定阴极与阳极之间的第二间距；根据所述水平阳极边的位置和所述水平阴极陶瓷边的位置确定阳极与阴极陶瓷极片之间的间距；根据所述竖直阴极边的位置确定阴极片宽；根据所述竖直阳极边的位置确定阳极片宽；根据所述阴极陶瓷极片与隔膜之间的间距、所述阳极与隔膜之间的间距、所述第一间距、所述第二间距、所述阳极与阴极陶瓷极片之间的间距、所述阴极片宽和所述阳极片宽确定所述图像对应的Overhang的测量值。
在本申请中，通过确定阴极陶瓷极片与隔膜之间的间距、阳极与隔膜之间的间距、第一间距、第二间距、阳极与阴极陶瓷极片之间的间距、阴极片宽和阳极片宽，实现图像对应的Overhang的测量值的准确确定。
作为一种可能的实现方式，所述图像包括所述电池极片的多张图像，所述多张图像分别对应所述电池极片的不同区域；所述检测方法还包括：根据多张图像分别对应的Overhang的测量值和所述不同区域之间的位置关系确定所述电池极片对应的Overhang的测量值。
在本申请中，采集电池极片不同区域的图像，然后分别确定对应的Overhang的测量值，相较于整体图像确定的方式，一方面，图像的处理方式更为灵活；另一方面，细粒度的图像处理精度更高，最终的测量结果也更准确。
作为一种可能的实现方式，所述多张图像分别对应所述电池极片的四角区域。
在本申请中，电池极片的四角区域具有对称性，不仅能够保证各张图像处理方式的通用性或者一致性，也便于基于多张图像的Overhang的测量值确定电池极片的Overhang的测量值。
作为一种可能的实现方式，针对任意一个极片边，该极片边的位置的确定过程包括：根据该极片边所在的区域的位置确定出该极片边所在的区域中的边缘过渡点的位置；基于所述边缘过渡点的位置和直线拟合算法确定出该极片边的位置。
在本申请中，基于各个极片边动态确定的区域，先确定极片边所在的区域中的边缘过渡点的位置，再基于边缘过渡点的位置和直线拟合算法实现该极片边的位置的有效且准确的定位。
第二方面，本申请提供一种电池极片的Overhang检测装置，包括：用于实现第一方面以及第一方面的任意一种可能的实现方式中所述的电池极片的Overhang检测方法的各个功能模块。
第三方面，本申请提供一种电池极片的Overhang检测设备，包括：处理器；以及与所述处理器通信连接的存储器；所述存储器存储有可被所述处理器执行的指令，所述指令被所述处理器执行，以使所述处理器能够执行如第一方面以及第一方面的任意一种可能的实现方式中所述的电池 极片的Overhang检测方法。
第四方面，本申请提供一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被计算机运行时，执行如第一方面以及第一方面的任意一种可能的实现方式中所述的电池极片的Overhang检测方法。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本申请实施例提供的图像采集装置的结构示意图；
图2为本申请实施例提供的图像的第一示例图；
图3为本申请实施例提供的图像的第二示例图；
图4为本申请实施例提供的电池极片的Overhang检测方法的流程图；
图5为本申请实施例提供的电池极片的Overhang检测装置的结构示意图；
图6为本申请实施例提供的电池极片的Overhang检测设备的结构示意图。
图标：100-图像采集装置；101-相机；102-光源；103-夹板；600-电池极片的Overhang检测装置；510-获取模块；520-位置确定模块；530-测量值确定模块；600-电池极片的Overhang检测设备；610-处理器；620-存储器。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行描述。以下实施例仅用于更加清楚地说明本申请的技术方案，因此只作为示例，而不能以此来限制本申请的保护范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本文中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。
在本申请实施例的描述中，技术术语“第一”“第二”等仅用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中，“多个”的含义是两个以上，除非另有明确具体的限定。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中，术语“多个”指的是两个以上(包括两个)，同理，“多组”指的是两组以上(包括两组)，“多片”指的是两片以上(包括两片)。
目前，从市场形势的发展来看，电池的应用越加广泛。电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统，而且还被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具，以及军事装备和航空航天等多个领域。随着动力电池应用领域的不断扩大，其市场的需求量也在不断地扩增。
随着电池的应用的越加广泛，电池的生产工艺技术也在不断发展。目前，电池工艺主要包括卷绕及叠片两种，涉及到将电池的阴极、阳极以及隔膜进行复合，得到复合极片。针对该复合极片，需要进行Overhang尺寸的测量。
现有的Overhang测量技术中，采用传统的固定区域拟合直线方案，在固定区域中定位各极片边，然后基于各极片边的定位结果确定Overhang测量值。例如：采集电池极片的图像，阳极边所在的区域和阴极边所在的区域在该图像中为预先固定的区域；然后在阳极边所在的固定区域中进行直线拟合，定位阳极边；以及在阴极边所在的固定区域中进行直线拟合，定位阴极边；最终利用阳极边的定位结果和阴极边的定位结果确定Overhang测量值。
申请人发现，这种测量方式虽然可以实现Overhang的测量，但是，由于其采用固定区域进行极片边定位的方式，导致Overhang的测量的灵活性较差和适应性较差。例如：这种测量方式只适用于离线测量，不能在电池工艺中进行在线测量。再例如：这种测量方式的图像采集方式受到限制，只能基于固定区域采集图像，不能灵活地变更图像采集方式，进而不能应用到复杂环境中。
经过申请人的仔细思考，上述的测量方式灵活性和适应性较差的本质原因为：基于固定的区域进行定位。例如：由于需要基于固定的区域进行定位，如果采用在线测量，可能并不能准确地定位到固定区域，所以只能采用离线测量的方式。再例如：由于需要基于固定的区域进行定位，所以采集的图像中必须要包括固定区域，所以只能基于固定区域采集图像，不能对图像的采集方式进行随意地变更，而应用到复杂环境中。
那么，如果各极片边的定位不再依靠固定的区域，而是依靠灵活可变的区域，则不会受到固定的区域的限制，使灵活性和适应性大大提高。
基于上述思考，申请人设计了一种技术方案，以减少Overhang测量所受到的限制，提高Overhang测量的灵活性和适应性。
在该技术方案中，不再采用传统的固定区域的拟合直线方案，而是基于动态确定的区域确定各个极片边的位置。由于区域不再固定，各个极片边的定位也更为灵活，比如：无需预先划定各个极片边所在的区域，则既适用于离线测量，也适用于在线测量。
因此，这种方式可以提高各个极片边的定位的灵活性，进而提高Overhang测量的灵活性；在灵活性提高的基础上，Overhang测量的适应性也相应提高，比如：在不考虑固定区域定位的情况下，图像的采集方式也更为灵活，可以适应于更多复杂环境的Overhang测量。
本申请实施例提供的技术方案可以用于电池制造工艺中，包括叠片工艺和卷绕工艺，测量复合后的电池极片的Overhang，Overhang的测量值可用于判断复合后的电池极片是否符合规范。
本申请实施例提供的技术方案可以应用于电池极片的Overhang检测系统，该检测系统可以是属于叠片机或者卷绕机的一部分，也可以是独立于叠片机或者卷绕机外的部分。
在电池极片的Overhang检测系统中，可以包括电池极片的Overhang检测设备和图像采集装置，电池极片的Overhang检测设备和图像采集装置之间通信连接。
图像采集装置用于采集电池极片的图像，Overhang检测设备用于控制图像采集装置，以及基于图像采集装置采集的图像实现Overhang测量。当然，在一些实施例中，图像采集装置的控制也可由其他的控制设备实现，不限于由Overhang检测设备实现。并且，Overhang检测设备可以理解为具备数据处理能力和数据存储能力等的智能设备，或者智能控制器，智能处理器等。
请参照图1，为本申请实施例提供的图像采集装置的结构示意图，图像采集装置包括：相机101、光源102和夹板103。
本申请实施例提供的技术方案用于对复合后的极片进行Overhang检测，在电池制造工艺中，在电池极片复合后，会被传送到下一处理节点，即，复合后的电池极片沿着预设的移动方向移动。
对于复合后的电池极片来说，包括正面和反面，其极片结构依次为：阴极、隔膜、阳极、隔膜、阴极。并且，在预设的移动方向上，阴极是彼此分立的片状结构。
因此，夹板103的一部分设置在极片的正面侧，另一部分设置在极片的反面侧，当需要采集图像时，相应的控制装置控制夹板103的两部分夹紧极片，以实现图像的稳定采集。
由于极片的正反两面结构对称，因此，从正面采集图像，或从反面采集图像，均能实现Overhang测量。在一些实施例中，相机101可以包括正面相机模组和/或反面相机模组(图1中包括正面相机模组和反面相机模组)。
对应的，相机101包括正面相机模组时，光源102包括正面相机模组的光源；相机101包括反面相机模组时，光源102包括反面相机模组的光源；相机101包括正面相机模组和反面相机模组时，光源102包括正面相机模组的光源和反面相机模组的光源。在图1中，正面相机模组的光源包括正面光源和反面光源，反面相机模组的光源也包括正面光源和反面光源。
光源102，用于为极片打光，以便于相机采集图像，正面光源用于正面打光，反面光源用于反面打光。其可以是闪光灯、照明灯等，在此不作限定。
并且，采用本申请实施例的技术方案，正面相机模组和/或反面相机模组可以设置一个相机或者多个相机。
若设置一个相机101，则该相机101用于采集上述的一片阴极对应的电池极片的完整图像，该相机101可以为符合帧率要求的大视野线阵相机。
若设置多个相机101，则这多个相机101分别用于采集上述的一片阴极对应的电池极片的不同视野的图像，例如：四角区域的图像。此时，多个相机101可以为高帧率小视野面阵相机。
为了便于理解，请参照图2和图3，若设置一个相机101，则采集的图像可以如图2所示，在图2中，包括多个视野，多个视野的图像可通过多个相机采集；若设置多个相机101，则采集的图像为基于图2的整体图像的不同视野的图像，如图3所示，为视野3的图像。需要注意的是，如果只有一个相机101，应当只有一个视野，该视野中包括极片的完整图像；在图2中标注的视野，只是为了便于理解图3与视野3的对应关系。
基于上述发明构思和应用场景的介绍，接下来请参照图4，为本申请实施例提供的电池极片的Overhang检测方法的流程图，该检测方法包括：
步骤410：获取电池极片的图像。
步骤420：确定图像中的多个极片边的位置。其中，多个极片边为与图像对应的Overhang测量值相关的极片边；各个极片边的位置基于各个极片边所在的区域确定，各个极片边所在的区域为动态确定的区域。
步骤430：根据多个极片边的位置确定图像对应的Overhang测量值。
结合上述应用场景的介绍，在步骤410中，电池极片的图像可以是一个完整的电池极片的图像，也可以是电池极片的不同区域(不同视野)的图像。
对应的，步骤410中的图像可以是一张图像，也可以是多张图像。不管是一张图像，还是多张图像，对应的图像处理方式相同。
结合前述图像采集装置的介绍，在步骤410中，接收正面相机模组和/或反面相机模组发送的图像。
在步骤420中，确定图像中的多个极片边的位置，多个极片边为与图像对应的Overhang测量值相关的极片边。
可以理解，由于步骤410中获取的可能是多张图像，这多张图像对应电池极片的不同视野。在这种情况下，基于图像所确定的Overhang测量值并不能代表最终的Overhang测量值，需要基于多张图像分别确定的Overhang测量值确定最终的Overhang测量值，因此，在步骤420中，将多个极片边定义为与图像对应的Overhang测量值相关的极片边。
在本申请实施例中，各个极片边的位置基于各个极片边所在的区域确定，且各个极片边所在的区域为动态确定的区域。由于一些极片边所在的区域的动态确定，可能需要结合其他极片的位 置确定，因此，在本申请实施例中，将区域的确定以及基于区域的定位整合到步骤420中。实际上，应当理解为，每确定一个极片边所在区域，便会接着基于该极片边所在区域，确定该极片边的位置，即，在极片边的定位过程中，伴随着极片边所在区域的动态确定。
在步骤430中，根据多个极片边的位置确定图像对应的Overhang测量值。当步骤410和步骤420采用不同的实施方式时，步骤430也可能具有多种实施方式，在后续实施例中进行详细介绍。
在本申请实施例中，在确定与图像对应的Overhang测量值相关的各个极片边的位置时，基于各个极片边所在的区域确定；并且，各个极片边所在的区域为动态确定的区域。相较于现有技术，不再采用传统的固定区域的拟合直线方案，而是基于动态确定的区域确定各个极片边的位置，由于区域不再固定，各个极片边的定位也更为灵活，比如：无需预先划定各个极片边所在的区域。因此，这种方式可以提高各个极片边的定位的灵活性，进而提高Overhang测量的灵活性；在灵活性提高的基础上，Overhang测量的适应性也提高，比如：在不考虑固定区域定位的情况下，可以适应于更多复杂环境的Overhang测量。
作为一种可选的实施方式，在步骤420中，各个极片边所在的区域为基于预设的区域参数信息确定的区域，或者为基于一个或者多个极片边的位置确定的区域。
预设的区域参数信息，为用于定位区域的参数信息，例如：区域边界点像素坐标、区域长度、区域宽度等。
在一些实施例中，多个极片边中的待确定位置的第一个极片边所在的区域基于预设的区域参数信息确定，第一个极片边之后的待确定位置的极片边所在的区域基于待确定位置的第一个极片边的位置确定，或者结合已确定位置的多个极片边的位置确定。
在本申请实施例中，各个极片边所在的区域可以基于预设的区域参数信息确定，也可以基于一个或者多个极片边的位置确定，使各个极片边的定位方式更为灵活。
作为一种可选的实施方式，图像中包括：第一极片边和第二极片边；第一极片边所在的区域基于预设的区域参数信息确定，第二极片边的区域基于第一极片边的位置和第一位置关系确定；第一位置关系为第一极片边和第二极片边之间的位置关系。
第一极片边可以理解为待确定位置的第一个极片边，第二极片边可以理解为待确定位置的第二个极片边。
对应的，针对第一极片边，其位置确定过程包括：基于预设的区域参数信息确定第一极片边所在的区域；基于第一极片边所在的区域确定第一极片边的位置。
针对第二极片边，其位置确定过程包括：基于第一极片边的位置和第一位置关系确定第二极片边所在的区域；基于第二极片边所在的区域确定第二极片边的位置。
其中，第一位置关系为第一极片边和第二极片边之间的位置关系，例如：第一极片边在第二极片边的左方、上方等。基于该位置关系，当第一极片边的位置确定之后，第二极片边所在的区域也能确定。例如：若第一极片边在第二极片边的上方，则第二极片边所在的区域为第一极片边所在的位置的下方区域。
在本申请实施例中，对于第一极片边和第二极片边来说，第一极片边所在的区域可以基于预设的区域参数确定，第二极片边所在的区域基于第一极片边的位置和第一位置关系确定，即，极片边所在的区域可以结合一个极片边的位置灵活确定，提高极片边定位的灵活性。
作为一种可选的方式，图像中还可以包括：第三极片边；第三极片边所在的区域基于第一极片边的位置、第二极片边的位置以及第二位置关系确定；第二位置关系为第一极片边、第二极片边和第三极片边之间的位置关系。
第三极片边可以理解为，在第二极片边之后待确定位置的极片边，并且，该极片边所在的区域需结合第一极片边和第二极片边的位置确定。
对应的，第三极片边的位置的确定过程包括：基于第一极片边的位置、第二极片边的位置以及第二位置关系确定第三极片边所在的区域；基于第三极片边所在的区域确定第三极片边的位置。
其中，第二位置关系为第一极片边、第二极片边和第三极片边之间的位置关系。例如：第三极片边在第一极片边的下方，且在第二极片边的左方。基于该位置关系，当第一极片边的位置和第二极片边的位置确定之后，第三极片边所在的区域也能确定。例如：第三极片边在第一极片边的下方，且在第二极片边的左方，则第三极片边所在的区域在第一极片边所在位置的下方，且在第二极片边所在位置的左方。
在本申请实施例中，对于第三极片边所在的区域，结合第一极片边的位置、第二极片边的位置以及第二位置关系确定，即，极片边所在的区域可结合至少两个极片边的位置灵活确定，提高极片边定位的灵活性。
作为一种可选的实施方式，图像中还可以包括：第四极片边；第四极片边所在的区域基于第一极片边的位置、第二极片边的位置、第三极片边的位置以及第三位置关系确定；第三位置关系为第一极片边、第二极片边、第三极片边和第四极片边之间的位置关系。
第四极片边可以理解为，在第三极片边之后的待确定位置的极片边，并且，该极片边所在的区域结合第一极片边的位置、第二极片边的位置、第三极片边的位置和第三位置关系确定。
对应的，第四极片边的位置确定过程包括：基于第一极片边的位置、第二极片边的位置、第三极片边的位置和第三位置关系确定第四极片边所在的区域；根据第四极片边所在的区域确定第四极片边的位置。
其中，第三位置关系为第一极片边、第二极片边、第三极片边和第四极片边之间的位置关系。例如：第四极片边在第一极片边的下方，且在第二极片边的左方，且在第三极片边的上方。基于该位置关系，当第一极片边的位置、第二极片边的位置以及第三极片边的位置确定之后，第四极片边所在的区域也能确定。例如：第四极片边所在的区域在第一极片边所在位置的下方，且在第二极片边所在位置的左方，且在第三极片边所在位置的上方。
在本申请实施例中，对于第四极片边所在的区域，结合第一极片边的位置、第二极片边的位置、第三极片边的位置以及第三位置关系确定，使极片边所在区域可结合至少三个极片边的位置灵活确定，提高极片边定位的灵活性。
可以理解，当涉及到更多极片边时，还可以结合更多的极片边的位置确定极片边所在的区域，在此不作限定。
作为一种可选的实施方式，第一极片边为竖直阴极边，第二极片边包括：竖直阳极边和水平阴极边，第三极片边包括：水平阴极陶瓷边和水平隔膜边，第四极片边为水平阳极边。
这种实施方式可以作为前述图3所示的图像对应的各个极片边的实施方式，即，当步骤410中的图像为图3所示的图像时，各个极片边为这种实施方式所述的各个极片边。
在这种实施方式下，在步骤420中，先结合预设的区域参数信息确定竖直阴极边所在的区域，然后基于竖直阴极边所在的区域确定竖直阴极边的位置。接着，基于竖直阴极边的位置和竖直阴极边与竖直阳极边之间的位置关系确定竖直阳极边所在的区域，基于竖直阳极边所在的区域确定竖直阳极边的位置；以及基于竖直阴极边的位置和竖直阴极边和水平阴极边之间的位置关系确定水平阴极边所在的区域，基于水平阴极边所在的区域确定水平阴极边的位置。
然后，基于竖直阴极边的位置、竖直阳极边和/或水平阴极边的位置以及竖直阴极边、竖直阳极边和/或水平阴极边与水平阴极陶瓷边之间的位置关系确定水平阴极陶瓷边所在的区域，基于水平阴极陶瓷边所在的区域确定水平阴极陶瓷杯的位置。水平隔膜边的位置确定过程参照水平阴极陶瓷边的位置确定过程，在此不再赘述。
然后，基于竖直阴极边的位置、竖直阳极边和水平阴极边中的至少一个极片边的位置、水平阴极陶瓷边和水平隔膜边中的至少一个极片边的位置，以及竖直阴极边、竖直阳极边和水平阴极 边中的至少一个极片边、水平阴极陶瓷边和水平隔膜边中的至少一个极片边与水平阳极边之间的位置关系，确定水平阳极边所在的区域，根据水平阳极边所在的区域确定水平阳极边的位置。
在本申请实施例中，与Overhang的测量值相关的极片边包括：竖直阴极边、竖直阳极边、水平阴极边、水平阴极陶瓷边、水平隔膜边以及水平阳极边，基于动态区域进行定位的方式，实现这些极片边的灵活定位，进而实现Overhang的测量值的灵活确定。
进一步地，基于上述的各个极片边，作为一种可选的实施方式，步骤430包括：根据水平阴极陶瓷边的位置和水平隔膜边的位置确定阴极陶瓷极片与隔膜之间的间距；根据水平阳极边的位置和水平隔膜边的位置确定阳极与隔膜之间的间距；根据水平阴极边的位置和水平阳极边的位置确定阴极与阳极之间的第一间距；根据竖直阴极边的位置和竖直阳极边的位置确定阴极与阳极之间的第二间距；根据水平阳极边的位置和水平阴极陶瓷边的位置确定阳极与阴极陶瓷极片之间的间距；根据竖直阴极边的位置确定阴极片宽；根据竖直阳极边的位置确定阳极片宽；根据阴极陶瓷极片与隔膜之间的间距、阳极与隔膜之间的间距、第一间距、第二间距、阳极与阴极陶瓷极片之间的间距、阴极片宽和阳极片宽确定图像对应的Overhang的测量值。
这种实施方式可以作为前述图3所示的图像对应的Overhang的测量值确定的实施方式，即，当步骤410中的图像为图3所示的图像时，对应的Overhang的测量值的确定方式。
在本申请实施例中，Overhang的测量值可以并不指代一个具体的值，而是指代相关的测量项目的值，即指代上述的阴极陶瓷极片与隔膜之间的间距、阳极与隔膜之间的间距、第一间距、第二间距、阳极与阴极陶瓷极片之间的间距、阴极片宽和阳极片宽中的任意一个或多个。
基于这些测量值，可以作整合，确定出最终的Overhang的测量值；当然，也可以直接将这些测量值作为最终的Overhang的测量值。对应的，在基于Overhang的测量值进行评估时，可以结合整合后的Overhang的测量值与标准的整合Overhang的测量值作比较，以评估复合后的电池极片是否符合规范。也可以将各个测量值分别与对应的标准测量值作比较，结合多个比较结果评估符合后的电池极片是否符合规范。
其中，阴极陶瓷极片边与隔膜之间的间距可以是阴极陶瓷极片边与隔膜在竖直方向上的间距。阳极与隔膜之间的间距，可以是阳极与隔膜在竖直方向上的间距。阴极与阳极之间的第一间距可以是水平阴极边和水平阳极边在竖直方向上的间距。阴极与阳极之间的第二间距可以是竖直阴极边和竖直阳极边在水平方向上的间距。阳极与阴极陶瓷极片之间的间距可以是水平阳极边与阴极陶瓷极片边在竖直方向上的间距。
在一些实施例中，阴极片宽为与图3对称的图像(视野对称的图像)中的竖直阴极边的位置与图3中的竖直阴极边的位置之间的间距。以及，阳极片宽为与图3对称的图像中的竖直阳极边的位置与图3中的竖直阳极边的位置之间的间距。
当然，若图像中包括两侧的竖直阴极边或者两侧的竖直阳极边，则可以直接根据两侧的竖直阴极边的位置确定阴极片宽，以及根据两侧的竖直阳极边确定阳极片宽。
在本申请实施例中，通过确定阴极陶瓷极片与隔膜之间的间距、阳极与隔膜之间的间距、第一间距、第二间距、阳极与阴极陶瓷极片之间的间距、阴极片宽和阳极片宽，实现图像对应的Overhang的测量值的准确确定。
在前述实施例中提到，步骤410中的图像可能包括多张图像，这多张图像分别对应电池极片的不同区域，在这种实施方式下，在步骤430之后，该检测方法还包括：根据多张图像分别对应的Overhang的测量值和不同区域之间的位置关系确定电池极片对应的Overhang的测量值。
根据不同区域之间的位置关系，可确定不同的图像对应的Overhang的测量值的整合方式。
在一些实施例中，若不同区域为对称的区域，则不同的图像对应的测量值的整合方式例如：相加或者相加后除以预设值等。
在另一些实施例中，若不同区域为非对称的区域，则不同的图像对应的测量值的整合方式 例如：加权平均、加权求和等。
可以理解，具体的整合方式可以结合具体的应用场景，灵活设置，在此不作限定。并且，采用何种整合方式，可以通过预先的数据仿真、数据试验等确定。
在本申请实施例中，采集电池极片不同区域的图像，然后分别确定对应的Overhang的测量值，相较于整体图像确定的方式，一方面，图像的处理方式更为灵活；另一方面，细粒度的图像处理精度更高，最终的测量结果也更准确。
作为一种可选的实施方式，多张图像分别对应电池极片的四角区域。
在这种实施方式，采集电池极片的四角区域，即四个角视野的电池极片的图像，所采集的其中一个视野的图像可以参照前述的图3所示。
在本申请实施例中，电池极片的四角区域具有对称性，不仅能够保证各张图像处理方式的通用性或者一致性，也便于基于多张图像的Overhang的测量值确定电池极片的Overhang的测量值。
在另一些实施例中，多种图像也可以分别对应电池极片的任意两个对角区域，或者指定位置所在的区域等，在本申请实施例中不作限定。
作为一种可选的实施方式，在极片边所在的区域的确定的基础上，极片边的位置确定过程可以包括：根据该极片边所在的区域的位置确定出该极片边所在的区域中的边缘过渡点的位置；基于边缘过渡点的位置和直线拟合算法确定出该极片边的位置。
在这种实施方式中，利用直线拟合的方式实现极片边的定位。可以理解，极片边在图像中为一条直线，在该条直线所在的区域确定之后，可以在该条直线所在的区域内通过二值化白找黑的方式进行边缘过渡点的定位，定位的边缘过渡点的位置为直线所在的大概位置。但是，由于边缘过渡点可能并不在一条直线上，因此，还需要利用直线拟合算法对这些边缘过渡点进行直线拟合，以准确定位极片边的位置。
在一些实施例中，直线拟合算法可以为最小二乘法。当然，也可以采用其他直线拟合算法，在此不作限定。
在一些实施例中，对于前述的第一极片边来说，在进行边缘过渡点的确定之前，还可以基于第一极片边所在的区域先进行区域粗定位，找到感兴趣区域，然后再基于感兴趣区域确定边缘过渡点。
在本申请实施例中，基于各个极片边动态确定的区域，先确定极片边所在的区域中的边缘过渡点的位置，再基于边缘过渡点的位置和直线拟合算法实现该极片边的位置的有效且准确的定位。
可以理解，在极片边所在的区域的基础上，也可以采用其他可行的直线定位方式，实现极片边的定位，例如：参照基于固定区域拟合极片边的位置的方式，在此不作限定。
请参照图5，本申请实施例中还提供一种电池极片的Overhang检测装置500，电池极片的Overhang检测装置500与前述的电池极片的Overhang检测方法对应，包括：获取模块510、位置确定模块520和测量值确定模块530。
获取模块510，用于获取电池极片的图像；位置确定模块520，用于确定所述图像中的多个极片边的位置；其中，所述多个极片边为与所述图像对应的Overhang测量值相关的极片边；各个极片边的位置基于所述各个极片边所在的区域确定，所述各个极片边所在的区域为动态确定的区域；测量值确定模块530，用于根据所述多个极片边的位置确定所述图像对应的Overhang测量值。
在本申请实施例中，测量值确定模块530具体用于：根据所述水平阴极陶瓷边的位置和所述水平隔膜边的位置确定阴极陶瓷极片与隔膜之间的间距；根据所述水平阳极边的位置和所述水平隔膜边的位置确定阳极与隔膜之间的间距；根据所述水平阴极边的位置和所述水平阳极边的位置确定阴极与阳极之间的第一间距；根据所述竖直阴极边的位置和所述竖直阳极边的位置确定阴极与阳 极之间的第二间距；根据所述水平阳极边的位置和所述水平阴极陶瓷边的位置确定阳极与阴极陶瓷极片之间的间距；根据所述竖直阴极边的位置确定阴极片宽；根据所述竖直阳极边的位置确定阳极片宽；根据所述阴极陶瓷极片与隔膜之间的间距、所述阳极与隔膜之间的间距、所述第一间距、所述第二间距、所述阳极与阴极陶瓷极片之间的间距、所述阴极片宽和所述阳极片宽确定所述图像对应的Overhang的测量值。
在本申请实施例中，测量值确定模块530还用于：根据多张图像分别对应的Overhang的测量值和所述不同区域之间的位置关系确定所述电池极片对应的Overhang的测量值。
在本申请实施例中，针对任意一个极片边，位置确定模块520具体用于：根据该极片边所在的区域的位置确定出该极片边所在的区域中的边缘过渡点的位置；基于所述边缘过渡点的位置和直线拟合算法确定出该极片边的位置。
由于该电池极片的Overhang检测装置500与电池极片的Overhang检测方法对应，因此，各个功能模块的实施方式和技术效果同样参照前述检测方法的实施方式以及技术效果，在此不再重复介绍。
基于同一发明构思，请参照图6，本申请实施例还提供一种电池极片的Overhang检测设备600，可作为前述的检测方法的执行主体，包括：处理器610；以及与处理器610通信连接的存储器620；存储器620中存储有可被处理器610执行的指令，指令被处理器610执行，以使处理器610能够执行前述实施例中所述的电池极片的Overhang检测方法。
其中，处理器610和存储器620之间可以通过通信总线实现通信连接。
该检测设备除了包括图6所示的组件，还可以包括更多的组件，图6不构成对其结构的限定。
本申请实施例还提供一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被计算机运行时，执行前述实施例中所述的电池极片的Overhang检测方法。
在本申请所提供的实施例中，应该理解到，所揭露装置和方法，可以通过其它的方式实现。以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，又例如，多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些通信接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
另外，作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
再者，在本申请各个实施例中的各功能模块可以集成在一起形成一个独立的部分，也可以是各个模块单独存在，也可以两个或两个以上模块集成形成一个独立的部分。
以上所述仅为本申请的实施例而已，并不用于限制本申请的保护范围，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (13)

  1. 一种电池极片的Overhang检测方法，其特征在于，包括：
    获取电池极片的图像；
    确定所述图像中的多个极片边的位置；其中，所述多个极片边为与所述图像对应的Overhang测量值相关的极片边；各个极片边的位置基于所述各个极片边所在的区域确定，所述各个极片边所在的区域为动态确定的区域；
    根据所述多个极片边的位置确定所述图像对应的Overhang测量值。
  2. 根据权利要求1所述的电池极片的Overhang检测方法，其特征在于，所述各个极片边所在的区域为基于预设的区域参数信息确定的区域，或者为基于一个或者多个极片边的位置确定的区域。
  3. 根据权利要求2所述的电池极片的Overhang检测方法，其特征在于，所述图像中包括：第一极片边和第二极片边；所述第一极片边所在的区域基于预设的区域参数信息确定，所述第二极片边所在的区域基于所述第一极片边的位置和第一位置关系确定；所述第一位置关系为所述第一极片边和所述第二极片边之间的位置关系。
  4. 根据权利要求3所述的电池极片的Overhang检测方法，其特征在于，所述图像中还包括：第三极片边；所述第三极片边所在的区域基于所述第一极片边的位置、所述第二极片边的位置以及第二位置关系确定；所述第二位置关系为所述第一极片边、所述第二极片边和所述第三极片边之间的位置关系。
  5. 根据权利要求4所述的电池极片的Overhang检测方法，其特征在于，所述图像中还包括：第四极片边；所述第四极片边所在的区域基于所述第一极片边的位置、所述第二极片边的位置、所述第三极片边的位置以及第三位置关系确定；所述第三位置关系为所述第一极片边、所述第二极片边、所述第三极片边和所述第四极片边之间的位置关系。
  6. 根据权利要求5所述的电池极片的Overhang检测方法，其特征在于，所述第一极片边为竖直阴极边，所述第二极片边包括：竖直阳极边和水平阴极边，所述第三极片边包括：水平阴极陶瓷边和水平隔膜边，所述第四极片边为水平阳极边。
  7. 根据权利要求6所述的电池极片的Overhang检测方法，其特征在于，所述根据多个极片边的位置确定所述图像对应的Overhang的测量值，包括：
    根据所述水平阴极陶瓷边的位置和所述水平隔膜边的位置确定阴极陶瓷极片与隔膜之间的间距；
    根据所述水平阳极边的位置和所述水平隔膜边的位置确定阳极与隔膜之间的间距；
    根据所述水平阴极边的位置和所述水平阳极边的位置确定阴极与阳极之间的第一间距；
    根据所述竖直阴极边的位置和所述竖直阳极边的位置确定阴极与阳极之间的第二间距；
    根据所述水平阳极边的位置和所述水平阴极陶瓷边的位置确定阳极与阴极陶瓷极片之间的间距；
    根据所述竖直阴极边的位置确定阴极片宽；
    根据所述竖直阳极边的位置确定阳极片宽；
    根据所述阴极陶瓷极片与隔膜之间的间距、所述阳极与隔膜之间的间距、所述第一间距、所述第二间距、所述阳极与阴极陶瓷极片之间的间距、所述阴极片宽和所述阳极片宽确定所述图像对应的Overhang的测量值。
  8. 根据权利要求1所述的电池极片的Overhang检测方法，其特征在于，所述图像包括所述电池极片的多张图像，所述多张图像分别对应所述电池极片的不同区域；所述检测方法还包括：
    根据多张图像分别对应的Overhang的测量值和所述不同区域之间的位置关系确定所述电池极片对应的Overhang的测量值。
  9. 根据权利要求8所述的电池极片的Overhang检测方法，其特征在于，所述多张图像分别对应所述电池极片的四角区域。
  10. 根据权利要求1所述的电池极片的Overhang检测方法，其特征在于，针对任意一个极片边，该极片边的位置的确定过程包括：
    根据该极片边所在的区域的位置确定出该极片边所在的区域中的边缘过渡点的位置；
    基于所述边缘过渡点的位置和直线拟合算法确定出该极片边的位置。
  11. 一种电池极片的Overhang检测装置，其特征在于，包括：
    获取模块，用于获取电池极片的图像；
    位置确定模块，用于确定所述图像中的多个极片边的位置；其中，所述多个极片边为与所述图像对应的Overhang测量值相关的极片边；各个极片边的位置基于所述各个极片边所在的区域确定，所述各个极片边所在的区域为动态确定的区域；
    测量值确定模块，用于根据所述多个极片边的位置确定所述图像对应的Overhang测量值。
  12. 一种电池极片的Overhang检测设备，包括：
    处理器；以及与所述处理器通信连接的存储器；
    所述存储器存储有可被所述处理器执行的指令，所述指令被所述处理器执行，以使所述处理器能够执行如权利要求1-8任一项所述的电池极片的Overhang检测方法。
  13. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被计算机运行时，执行如权利要求1-8任一项所述的电池极片的Overhang检测方法。
PCT/CN2022/089070 2022-04-25 2022-04-25 电池极片的Overhang检测方法、装置、设备、存储介质 WO2023206020A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2022/089070 WO2023206020A1 (zh) 2022-04-25 2022-04-25 电池极片的Overhang检测方法、装置、设备、存储介质
CN202280042066.XA CN117501507A (zh) 2022-04-25 2022-04-25 电池极片的Overhang检测方法、装置、设备、存储介质
KR1020247008467A KR102667112B1 (ko) 2022-04-25 배터리 극편의 오버행 검출 방법, 장치, 설비, 저장 매체

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2022/089070 WO2023206020A1 (zh) 2022-04-25 2022-04-25 电池极片的Overhang检测方法、装置、设备、存储介质

Publications (1)

Publication Number Publication Date
WO2023206020A1 true WO2023206020A1 (zh) 2023-11-02

Family

ID=88516473

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/089070 WO2023206020A1 (zh) 2022-04-25 2022-04-25 电池极片的Overhang检测方法、装置、设备、存储介质

Country Status (2)

Country Link
CN (1) CN117501507A (zh)
WO (1) WO2023206020A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117232425A (zh) * 2023-11-14 2023-12-15 钛玛科（北京）工业科技有限公司 锂电池阳极材料切入深度测量方法、装置、设备及介质
CN117704968A (zh) * 2024-02-06 2024-03-15 钛玛科（北京）工业科技有限公司 一种基于图像投影的锂电卷绕OverHang检测方法及系统
KR102667112B1 (ko) 2022-04-25 2024-05-17 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 배터리 극편의 오버행 검출 방법, 장치, 설비, 저장 매체

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19836192C1 (de) * 1998-08-10 1999-12-16 Stn Atlas Elektronik Gmbh Verfahren und Vorrichtung zur optischen Prüfung der Maßhaltigkeit von Flachlamellen
CN112465814A (zh) * 2020-12-17 2021-03-09 无锡日联科技股份有限公司 基于深度学习的电池overhang的计算方法和装置
CN112577421A (zh) * 2019-12-11 2021-03-30 广东利元亨智能装备股份有限公司 一种电芯检测方法、装置及设备
CN113624137A (zh) * 2021-08-30 2021-11-09 广东利元亨智能装备股份有限公司 电芯检测方法、布光方法、装置、电子设备及存储介质
KR20220020506A (ko) * 2020-08-12 2022-02-21 주식회사 엘지에너지솔루션 전지셀 불량 검사 시스템 및 전지셀 불량 검사 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19836192C1 (de) * 1998-08-10 1999-12-16 Stn Atlas Elektronik Gmbh Verfahren und Vorrichtung zur optischen Prüfung der Maßhaltigkeit von Flachlamellen
CN112577421A (zh) * 2019-12-11 2021-03-30 广东利元亨智能装备股份有限公司 一种电芯检测方法、装置及设备
KR20220020506A (ko) * 2020-08-12 2022-02-21 주식회사 엘지에너지솔루션 전지셀 불량 검사 시스템 및 전지셀 불량 검사 방법
CN112465814A (zh) * 2020-12-17 2021-03-09 无锡日联科技股份有限公司 基于深度学习的电池overhang的计算方法和装置
CN113624137A (zh) * 2021-08-30 2021-11-09 广东利元亨智能装备股份有限公司 电芯检测方法、布光方法、装置、电子设备及存储介质

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102667112B1 (ko) 2022-04-25 2024-05-17 컨템포러리 엠퍼렉스 테크놀로지 씨오., 리미티드 배터리 극편의 오버행 검출 방법, 장치, 설비, 저장 매체
CN117232425A (zh) * 2023-11-14 2023-12-15 钛玛科（北京）工业科技有限公司 锂电池阳极材料切入深度测量方法、装置、设备及介质
CN117232425B (zh) * 2023-11-14 2024-02-13 钛玛科（北京）工业科技有限公司 锂电池阳极材料切入深度测量方法、装置、设备及介质
CN117704968A (zh) * 2024-02-06 2024-03-15 钛玛科（北京）工业科技有限公司 一种基于图像投影的锂电卷绕OverHang检测方法及系统
CN117704968B (zh) * 2024-02-06 2024-05-14 钛玛科（北京）工业科技有限公司 一种基于图像投影的锂电卷绕OverHang检测方法及系统

Also Published As

Publication number Publication date
CN117501507A (zh) 2024-02-02
KR20240038147A (ko) 2024-03-22

Similar Documents

Publication Publication Date Title
WO2023206020A1 (zh) 电池极片的Overhang检测方法、装置、设备、存储介质
WO2024032002A1 (zh) 电芯检测方法、装置、系统、计算机设备和存储介质
CN115829913B (zh) 裸电芯外观检测方法、装置、计算机设备和存储介质
CN109636717B (zh) 锂电池涂布检测分析方法、系统、设备及存储介质
CN101814186A (zh) 利用曲线拟合校正摄像机径向畸变的方法
WO2023193213A1 (zh) 电池极片绝缘涂层缺陷的检测方法、装置和计算机设备
CN109613000B (zh) 锂电池涂布缺陷检测方法、系统、设备及存储介质
CN109636858B (zh) 锂电池涂布图像采集标定方法、系统、设备及存储介质
EP3857874B1 (en) Hybrid depth processing
WO2023045271A1 (zh) 一种二维地图生成方法、装置、终端设备及存储介质
CN102590222A (zh) 一种光伏组件缺陷检测方法及系统
WO2020087909A1 (zh) 一种基于多相机的光伏电池串定位方法
CN112212784B (zh) 一种点激光位移传感器与双目相机坐标融合的方法及系统
WO2023070552A1 (zh) 一种电池卷芯卷绕覆盖检测方法、装置及设备
CN204679637U (zh) 双激光标定的高精度ccd多点测距装置
WO2022165934A1 (zh) 物体表面数据侦测方法、系统、电子装置和存储介质
KR102667112B1 (ko) 배터리 극편의 오버행 검출 방법, 장치, 설비, 저장 매체
CN101865661A (zh) 螺旋桨桨叶螺距的自动测量新方法
CN113884025B (zh) 增材制造结构光回环检测方法、装置、电子设备和存储介质
CN110706288A (zh) 目标检测的方法、装置、设备及可读存储介质
CN113776491B (zh) 基于b-m2m的多维测距方法、mec及测距单元
CN104680523A (zh) 基于前景和背景先验的多模态区域一致性的显著性对象检测方法
Xia et al. An Improved Depth-Based Camera Model in Binocular Visual System
CN101777182A (zh) 坐标循环逼进式正交摄像机系统视频定位方法及系统
US20240062423A1 (en) Calibration scale, calibration method and apparatus, and detection method and apparatus

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 202280042066.X

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22938877

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2022938877

Country of ref document: EP

Effective date: 20240301

ENP Entry into the national phase

Ref document number: 20247008467

Country of ref document: KR

Kind code of ref document: A