WO2023121188A1 - 외관 검사 시스템 및 방법 - Google Patents
외관 검사 시스템 및 방법 Download PDFInfo
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- WO2023121188A1 WO2023121188A1 PCT/KR2022/020735 KR2022020735W WO2023121188A1 WO 2023121188 A1 WO2023121188 A1 WO 2023121188A1 KR 2022020735 W KR2022020735 W KR 2022020735W WO 2023121188 A1 WO2023121188 A1 WO 2023121188A1
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- Prior art keywords
- secondary battery
- inspection
- appearance
- inspecting
- inspected
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/952—Inspecting the exterior surface of cylindrical bodies or wires
-
- 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
- H01M10/0422—Cells or battery with cylindrical casing
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/204—Image signal generators using stereoscopic image cameras
- H04N13/254—Image signal generators using stereoscopic image cameras in combination with electromagnetic radiation sources for illuminating objects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/845—Objects on a conveyor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
- G01N2021/8841—Illumination and detection on two sides of object
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8854—Grading and classifying of flaws
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/10—Scanning
- G01N2201/104—Mechano-optical scan, i.e. object and beam moving
- G01N2201/1042—X, Y scan, i.e. object moving in X, beam in Y
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/10—Scanning
- G01N2201/104—Mechano-optical scan, i.e. object and beam moving
- G01N2201/1047—Mechano-optical scan, i.e. object and beam moving with rotating optics and moving stage
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/145—Illumination specially adapted for pattern recognition, e.g. using gratings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to an appearance inspection system and method, and more particularly, to a secondary battery appearance inspection system and method for inspecting whether or not there is a defect in the appearance of a manufactured secondary battery.
- Batteries that store electrical energy can be generally classified into primary batteries and secondary batteries.
- a primary battery is a disposable battery
- a secondary battery is a rechargeable battery manufactured using a material capable of repeating oxidation and reduction processes between an electric current and a material. That is, power is charged when a reduction reaction is performed on a material by current, and power is discharged when an oxidation reaction is performed on a material. As such charge-discharge is repeatedly performed, electricity is generated.
- lithium secondary batteries such as lithium ion batteries and lithium ion polymer batteries, which have advantages such as high energy density, discharge voltage, and output stability.
- Secondary batteries can be recharged unlike primary batteries, and are classified into coin-type batteries, cylindrical batteries, prismatic batteries, and pouch-type batteries according to the shape of a case.
- Secondary batteries made through the manufacturing process are inspected to see if there are any defects, and through this, defective products are classified. Most basically, it may be inspected whether there is a problem with the appearance of the secondary battery, and in this case, whether scratches, wrinkles, etc. exist on the exterior and whether expansion occurs in the secondary battery are inspected.
- the present invention has been made to solve the above problems, and an object of the present invention is to precisely inspect all appearances of the secondary battery by changing an inspection device for inspecting the appearance of the secondary battery, and transport the secondary battery to be inspected. It is an object of the present invention to provide a secondary battery appearance inspection system and method that increase stability in a secondary battery transport process by changing a transport device and improve the appearance inspection accuracy of the secondary battery.
- An appearance inspection system for inspecting the appearance of a secondary battery according to the present invention includes a transport device for transporting the secondary battery according to an inspection position, a top and bottom inspection device disposed at a first inspection position and inspecting the top and bottom of the secondary battery, and a second inspection device.
- the transfer device is a conveyor including a linear motion guide, and the secondary battery may be transferred by a linear motion of the linear motion guide.
- the top and bottom inspection device may include an upper inspector for inspecting the upper part of the secondary battery and a lower inspector for inspecting the lower part of the secondary battery, and a camera may be formed therein.
- the rotation device may include a first rotator that is disposed at an entry part of the second inspection position and rotates the secondary battery so that the vertical direction of the secondary battery and the moving direction of the transfer device are parallel before the inspection at the second inspection position is performed.
- the side inspection device may be a 3D (Threee Dimensions) camera including a light source device that radiates light along the side surface of the secondary battery and a mirror that reflects the light radiated by the light source device.
- 3D Three Dimensions
- the side inspection device may include a first side inspection device that inspects a portion of the side of the secondary battery and a second side inspection device that inspects a portion of the side of the secondary battery that is not inspected by the first side inspection device.
- the rotating device may include a second rotator disposed between the first side inspection device and the second side inspection device to rotate the secondary battery by 180 degrees such that the top and bottom surfaces of the secondary battery are reversed.
- the exterior inspection system may further include a loading device for loading a predetermined number of secondary batteries to be inspected on the transfer device.
- the exterior inspection system may further include a determination device for discriminating a secondary battery according to inspection results measured from the top and bottom inspection devices and the side inspection devices.
- the appearance inspection system may further include a first conveyor that is connected to the discrimination device to transfer secondary batteries that have been identified, and a second conveyor that is connected to the first conveyor and transfers defective secondary batteries.
- the first conveyor may be a pocket conveyor including pockets in which secondary batteries having been identified are individually placed.
- a loading step of loading a secondary battery whose appearance is inspected by a loading device into a conveying device, a conveying step of conveying the secondary battery by the conveying device, and an upper and lower portion of the secondary battery A top and bottom inspection step of inspecting the top and bottom inspection device, a first rotation step of rotating the secondary battery so that the top and bottom direction of the secondary battery and the moving direction of the transfer device are parallel by the first rotating machine, and a part of the side of the secondary battery is rotated by the first side inspection device.
- a first side inspection step inspected by a second rotation step in which the secondary battery is rotated by 180 degrees by a second rotor so that the top and bottom surfaces of the secondary battery are reversed, and the side surface of the secondary battery that is not inspected in the first side inspection step. It may include a second side inspection step in which the portion is inspected by a second side inspection device.
- the secondary battery may be transferred by a linear motion of the linear motion guide by a transfer device including the linear motion guide.
- the first side inspection device and the second side inspection device include a light source device for radiating light along the side surface of the secondary battery and a mirror for reflecting the light emitted by the light source device. It could be a 3D camera.
- the external appearance inspection method may further include a determination step of discriminating the externally inspected secondary battery by a determination device according to the measured inspection result.
- An appearance inspection system for inspecting the appearance of a secondary battery according to the present invention includes a transport device for transporting the secondary battery according to an inspection position, a top and bottom inspection device disposed at a first inspection position and inspecting the top and bottom of the secondary battery, and a second inspection device.
- FIG. 1 is a plan view schematically illustrating a visual inspection system according to a first embodiment of the present invention.
- FIG. 2A is a plan view schematically illustrating a transport device of a visual inspection system according to a first embodiment of the present invention.
- 2B is a side view schematically illustrating a transport device of a visual inspection system according to a first embodiment of the present invention.
- FIG. 3 is a plan view schematically illustrating a top and bottom inspection device of a visual inspection system according to a first embodiment of the present invention.
- FIG. 4 is a front view schematically illustrating a first side inspection device of a side inspection device of a visual inspection system according to a first embodiment of the present invention.
- FIG. 5 is a perspective view schematically illustrating a first conveyor of the exterior inspection system according to the first embodiment of the present invention.
- FIG. 6 is a flowchart illustrating a method for inspecting appearance according to a second embodiment of the present invention.
- the present invention provides a visual inspection system as Embodiment 1.
- FIG. 1 is a plan view schematically illustrating a visual inspection system 1 according to a first embodiment of the present invention.
- the exterior inspection system 1 for inspecting the exterior of a secondary battery 10 includes a transport device 100, an up and down inspection device 200, a side inspection device 300, and a rotation device 400. can do.
- 2A and 2B are a plan view and a side view schematically showing the transfer device 100 of the appearance inspection system 1 according to the first embodiment of the present invention.
- the secondary battery 10 may be moved to each inspection location where the inspection is performed.
- the exterior inspection system 1 may include the transport device 100 .
- the transfer device 100 may have the form of a conveyor. If the transfer device 100 has a conveyor shape, the secondary battery 10 may be transported along the conveyor on the upper surface of the transfer device 100 .
- a path along which the secondary battery 10 is transported in the transfer device 100 may have an elliptical shape.
- the secondary battery 10 may be inspected while moving along an elliptical path.
- a first inspection position 20 may be formed on a lower left side and a second inspection position 30 may be formed on a lower right side.
- each inspection location is only one example, it is not necessarily limited thereto, and may be formed at other locations.
- An upper and lower inspection of the secondary battery 10 may be performed at the first inspection position 20 , and a side surface of the secondary battery 10 and an inspection for expansion may be performed at the second inspection position 30 . A detailed description of each test will be given later.
- the secondary battery 10 to be inspected may start to be transferred along the transfer device 100 from the upper left side.
- the secondary battery 10 may be transported in a state where the longitudinal direction and the traveling direction of the secondary battery 10 lie perpendicular to each other.
- the transfer of the secondary battery 10 may start in a state in which the secondary battery 10 is laid down so that its axial direction coincides with the vertical direction in FIG. 2A based on FIG. 2A.
- the secondary battery 10 is not limited to the examples of the present invention and may have various types of shapes.
- the transport device 100 of the appearance inspection system 1 may be a conveyor including a linear motion guide 110. .
- the secondary battery 10 may be transferred to each inspection position through the linear motion of the linear motion guide 110 during the external inspection process.
- the linear motion guide 110 may generally consist of a rail 111 and a block 112 moving along the rail 111 . Therefore, the transfer device 100 may include a linear motion guide 110 in which the block 112 moves along the rail 111 formed on the upper surface, and the secondary battery to be inspected is placed on the upper surface of the block 112. (10) can be transported while being placed.
- the transfer device 100 is a conveyor including the linear motion guide 110, shaking when the secondary battery 100 is transferred is minimized, thereby increasing stability.
- the conveying speed may be adjusted according to the inspection process.
- FIG 3 is a plan view schematically showing the top and bottom inspection device 200 of the appearance inspection system 1 according to the first embodiment of the present invention.
- the appearance inspection system 1 may include the top and bottom inspection device 200 .
- the top and bottom inspection device 200 is disposed at the first inspection position 20 to inspect the top and bottom of the secondary battery 10 . Specifically, it may be inspected whether wrinkles, dents, scratches, foreign substances, contamination, discoloration, short marks, and the like exist on the upper and lower parts of the secondary battery 10 through the top and bottom inspection device 200 .
- the top and bottom inspection device 200 includes an upper inspector 210 that inspects the upper part of the secondary battery 10 and a lower inspector that inspects the lower part of the secondary battery 10. (220).
- the upper inspection device 210 and the lower inspection device 220 of the top and bottom inspection device 200 may be respectively disposed on both sides of the transfer device 100 at the first inspection position 20 . Therefore, based on FIG. 2A , in the first inspection position 20, the upper inspection device 210 may be disposed on the upper side and the lower inspection device 220 may be disposed on the lower side. Since the upper and lower portions of the secondary battery 10 may be inspected simultaneously, the positions of the upper inspection device 210 and the lower inspection device 220 may be exchanged.
- Cameras 201 may be formed inside each of the upper inspection device 210 and the lower inspection device 220 of the top and bottom inspection device 200 . It may be inspected whether there is an abnormality by photographing the external appearance of the upper and lower parts of the secondary battery 10 through the camera 201 formed therein.
- the upper and lower inspection device 200 of the appearance inspection system 1 has a camera 201 formed therein and includes an upper inspection device 210 and a lower inspection device 220, which are laid on the upper surface of the transport device 100
- Upper and lower external appearances of the secondary battery 10 may be inspected simultaneously. Thus, time and space can be saved and the efficiency of the inspection process can be increased.
- the secondary battery 10 that has undergone upper and lower inspection by the upper and lower inspection device 200 may be transported by the transfer device 100 and reach the second inspection position 30 .
- the appearance of the side of the secondary battery 10 that has reached the second inspection position 30 and whether or not it is swollen may be inspected.
- the exterior inspection system 1 according to the first embodiment of the present invention may include the side inspection device 300 .
- the side inspection device 300 may be disposed at the second inspection position 30 to inspect the side of the secondary battery 10 and whether or not it is inflated. Specifically, whether wrinkles, dents, scratches, rust, foreign matter, contamination, discoloration, etc. exist on the side of the secondary battery 10 through the side inspection device 300 and whether other identification phrases match the product are inspected. can In addition, the presence or absence of a defect may be inspected through whether the secondary battery 10 is inflated.
- the side inspection device 300 of the exterior inspection system 1 may be a 3D camera including a light source device 301 and a mirror 302. there is.
- the light source device 301 can radiate light along the side of the secondary battery 10 and the mirror 302 can reflect the light emitted by the light source device 301.
- the light source device 301 radiates light of a specific pattern to the side of the secondary battery 10 and calculates the amount of change in the pattern to determine the appearance of the secondary battery 10.
- the mirror 302 may reflect light to widen the angle and range that can be inspected. Accordingly, data on the side of the secondary battery 10 may be obtained in 3D form based on the amount of change in the pattern caused by the light of the 3D camera. Since this is just one of the operation methods of the 3D camera, it is not necessarily limited thereto.
- the side inspection device 300 may further include a device such as a light that additionally provides light necessary for the operation of the 3D camera.
- the side inspection device 300 is a 3D camera including the light source device 301 and the mirror 302
- the side inspection device 300 even if the secondary battery 10 has a curved side surface such as a cylinder, all parts of the side surface can be inspected, thereby enabling detection power.
- the effect of improving and minimizing overcheck defects can occur.
- FIG 4 is a front view schematically showing the first side inspection device 310 of the side inspection device 300 of the appearance inspection system 1 according to the first embodiment of the present invention.
- the side inspection device 300 of the appearance inspection system 1 includes a first side inspection device 310 and a second side inspection device 300.
- a side checker 320 may be included.
- the first side inspector 310 may inspect part of the side of the secondary battery 10
- the second side inspector 320 may inspect part of the side of the secondary battery 10 that has not been inspected by the first side inspector 310. can be inspected
- the first side inspector 310 and the second side inspector 320 may be 3D cameras each including the light source device 301 and the mirror 302 described above.
- the side inspection device 300 includes the first side inspection device 310 and the second side inspection device 320
- the secondary battery 10 whose upper and lower parts have been inspected by the transfer device 100 is subjected to the second inspection.
- the side inspection and expansion can be inspected by the first side inspection device 310 and the second side inspection device 320 .
- the secondary battery 10 is inspected by the first side inspector 310 in the first half, and in the second half Inspection by the second side inspector 320 may proceed. Therefore, based on FIG. 2A , the first side inspector 310 may be disposed on the left side of the second inspection position 30, and the second side inspector 320 may be disposed on the right side of the second inspection position 30. can Since this is just one example, the position of the first side inspector 310 and the position of the second side inspector 320 may be reversed.
- the secondary battery 10 that has undergone upper and lower inspection is transported by the transport device 100 in a state of lying on the upper surface of the transport device 100, and is moved by the rotation device 400 at the second inspection position 30. Placed status can change. A description of the rotating device 400 will be discussed later in detail.
- a part of the side surface of the secondary battery 10 whose disposed state is changed may be inspected by the first side inspector 310 .
- a part of the side surface when the secondary battery 10 has a cylindrical shape, an inspection may be performed on a part corresponding to 180 degrees among the side surfaces having a radius of 360 degrees.
- the scope of some of the aspects is not limited thereto and may be changed.
- the secondary battery 10 that has been inspected by the first side inspector 310 may be changed into a disposition state for inspection of the other side by the rotating device 400 .
- a description of the rotating device 400 will be discussed later in detail.
- a part of the side surface of the secondary battery 10 whose arrangement state is changed may be inspected by the second side inspector 320 , which is not inspected by the first side inspector 310 .
- the portion corresponding to 180 degrees of the side of the secondary battery 10 is inspected, the portion corresponding to the remaining 180 degrees may be inspected.
- the range of the side of the secondary battery 10 inspected by the second side inspector 320 is not limited thereto and may be changed.
- the efficiency of the inspection may be increased by reducing parts that are not properly inspected on the side of the secondary battery 10 .
- the appearance inspection system 1 may include a rotating device 400 .
- the rotating device 400 may be disposed at the second inspection position 30 and rotate the secondary battery 10 so that the secondary battery 10 is in an appropriate state for each inspection.
- the rotating device 400 may include a first rotator 410 and a second rotator 420 .
- the first rotator 410 can rotate the secondary battery 10 after the top and bottom inspections in the top and bottom inspection device 200 can undergo a side inspection in the first side inspection device 310, and
- the rotating machine 420 rotates the secondary battery 10, which has been inspected on a part of the side by the first side inspector 310, to be inspected on another part of the side by the second side inspector 320.
- the first rotator 410 may be disposed at the entrance of the second inspection position 30 . Specifically, the first rotator 410 reaches the position where the first side inspector 310 is disposed in the second inspection position 30 on the path along which the secondary battery 10 is moved by the transfer device 100. It can be placed at a location just before passing.
- the first rotator 410 moves the secondary battery 10, which has been inspected in a state in which the longitudinal direction and the traveling direction of the secondary battery 10 are laid perpendicularly to each other in the up-and-down inspection device 200, to the secondary battery ( 10) may be rotated so that the longitudinal direction and the moving direction of the transfer device 100 are parallel.
- the secondary battery 10 may be rotated in a laid-down state such that the axial direction of the secondary battery 10 coincides with the left-right direction of FIG. 2A based on FIG. 2A.
- the second rotator 440 may be disposed between the first side inspection device 310 and the second side inspection device 320 at the second inspection position 30 .
- the secondary battery 10 may be transported by the transport device 100 in the order of the first side inspection device 310 , the second rotation device 420 , and the second side inspection device 320 .
- the second rotator 420 places the secondary battery 10, which has been inspected by the first side inspector 310 in a state where the lengthwise direction and the traveling direction of the secondary battery 10 are laid in parallel to each other, to the top surface and It can be rotated 180 degrees so that the bottom faces are inverted from each other.
- the secondary battery 10 has a cylindrical shape
- the secondary battery 10 is rotated 180 degrees so that the side of the secondary battery 10 facing upward in the first side inspector 310 faces the transfer device 100.
- the rotating device 400 includes the first rotating device 410 and the second rotating device 420, when the secondary battery 10 is placed in each test position by the transfer device 100, it is placed in a state suitable for testing. This can result in an increase in the efficiency of the process.
- the appearance inspection system 1 may further include a loading device 500 .
- the loading device 500 may load a predetermined number of secondary batteries 10 to be inspected on the transport device 100 .
- the transfer device 100 is a conveyor including the linear motion guide 110
- eight secondary batteries 10 may be loaded on the upper surface of blocks 112 moving along the rails 111.
- eight secondary batteries 10 may be set as a set and pass through each inspection position.
- the loading device 500 can load a preset number of secondary batteries 10 into the transport device 100, part of the process can be automated and efficiency can be increased.
- the secondary battery 10 to be inspected may be stored by the tray 40 before being loaded onto the transport device 100.
- the visual inspection system 1 has the transport device 100 through the loading device 500 )
- the tray inlet 510 through which the tray 40 storing the secondary batteries 10 to be loaded is loaded into the transfer device 100 through the loading device 500 and the secondary batteries 10 stored therein
- a tray outlet 520 through which the empty tray 40 can exit may be formed.
- the appearance inspection system 1 may further include a discrimination device 600 .
- the discrimination device 600 may determine the secondary battery 10 having a problem in appearance based on the inspection results of the secondary battery 10 received from each inspection device.
- the secondary battery 10 may be classified into defective and non-defective products by the discrimination device 600 .
- FIG 5 is a perspective view schematically illustrating a first conveyor 700 of the appearance inspection system 1 according to the first embodiment of the present invention.
- the appearance inspection system 1 may further include a first conveyor 700 .
- the first conveyor 700 may be connected to the determination device 600 to transfer the secondary battery 10 determined to be defective or good. At this time, in order to prevent problems that may occur during the transfer process, the first conveyor 700 may be a pocket conveyor including pockets 701 in which the identified secondary batteries 10 may be individually contained.
- the appearance inspection system 1 includes a second conveyor 800 capable of transporting secondary batteries 10 determined to be defective due to abnormalities according to the inspection result. ) may further include.
- the exterior inspection system 1 may include other components required in the process.
- the normal storage box 50 in which the secondary batteries 10 having no abnormality as a result of inspection transported along the first conveyor 700 are stored and the secondary batteries having an abnormality as a result of the inspection transferred along the second conveyor 800 It may further include a defective storage box 60 in which (10) is stored.
- the appearance inspection system 1 In the appearance inspection system 1 according to the first embodiment of the present invention, shaking of the secondary batteries 10 during a moving process is minimized and collisions with each other are prevented, thereby increasing stability.
- the entire side surface of the secondary battery 10 can be inspected, and the efficiency of the inspection can be increased because the detection ability is improved by the 3D inspection and the number of over-inspection defects is reduced.
- the present invention provides a second embodiment of a method for inspecting the appearance of a cylindrical secondary battery.
- FIG. 6 is a flowchart illustrating a method for inspecting appearance according to a second embodiment of the present invention.
- the appearance inspection method according to the second embodiment of the present invention may start with a loading step ( S10 ) in which the loading device 500 loads the secondary battery 10 whose appearance is to be inspected on the transfer device 100 . there is.
- a predetermined number of secondary batteries 10 may be loaded into the transfer device 100 .
- the cylindrical secondary battery 10 may be loaded in a state where the axial direction and the traveling direction of the secondary battery 10 are perpendicular to each other for vertical inspection.
- a transfer step ( S20 ) in which the secondary batteries 10 are transferred by the transfer device 100 may proceed.
- the secondary battery 10 may be moved to each inspection position for a visual inspection. That is, the external inspection method of the secondary battery 10 may be sequentially performed according to the movement of the transfer device 100 .
- the conveying device 100 used in the conveying step (S20) of the appearance inspection method according to the second embodiment of the present invention includes the linear motion guide 110, and the linear motion guide 110 in the conveying step (S20) has a straight line.
- the secondary battery 10 may be transported through movement. Therefore, shaking of the secondary battery 10 in the transfer step ( S20 ) can be minimized.
- the top and bottom inspection step ( S30 ) of inspecting the upper and lower portions by the top and bottom inspection device 200 may proceed.
- the top and bottom inspection step S30 as described in Example 1, it may be inspected whether there are wrinkles, dents, scratches, foreign matter, contamination, discoloration, short marks, etc. on the top and bottom of the secondary battery 10.
- a first rotation step (S40) in which the axial direction of the cylindrical secondary battery 10 and the moving direction of the transfer device 100 are rotated in parallel by the first rotator 410 may proceed. there is.
- the secondary battery 10 may be rotated 90 degrees in the first rotation step ( S40 ), which is to change the state of the secondary battery 10 to undergo the first side inspection.
- a first side inspection step ( S50 ) of inspecting a part of the side surface of the secondary battery 10 by the first side inspection device 310 may proceed.
- the first side inspection device 310 may be a device such as a 3D camera for efficient inspection.
- a second rotation step ( S60 ) in which the secondary battery 10 is rotated 180 degrees by the second rotator 420 so that the top and bottom surfaces of the secondary battery 10 are reversed.
- the secondary battery 10 in a state of lying on the upper surface of the transfer device 100 is rotated by 180 degrees, so that the part of the side surface that is not inspected in the first side inspection step (S50) is ready to be inspected. can do
- a second side inspection step ( S70 ) in which a part of the side surface of the secondary battery 10 not inspected in the first side inspection step ( S50 ) is inspected by the second side inspector 420 . can proceed
- first side inspection step (S50) and the second side inspection step (S70) whether there are wrinkles, dents, scratches, rust, foreign matter, contamination, discoloration, etc. on the side of the secondary battery 10 and other identification phrases are checked. It can be checked whether it matches the product. In addition, the presence or absence of a defect may be inspected through whether or not the secondary battery 10 is inflated.
- the secondary battery 10 When the side inspection of the secondary battery 10 is completed through the second side inspection step ( S70 ), the secondary battery 10 may be in a state in which the top, bottom, and side inspections have all progressed.
- the cylindrical secondary battery 10 can be efficiently inspected up to the curved side surface, and the entire external appearance can be efficiently inspected within the process.
- the external appearance inspection method according to the second embodiment of the present invention may further include a determination step ( S80 ) of discriminating the externally inspected secondary battery 10 into a defective product or a good product based on each inspection result.
- the process of separating defective secondary batteries 10 can be separated in the course of the inspection process, thereby increasing the efficiency of the process.
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Abstract
Description
Claims (15)
- 이차 전지의 외관을 검사하는 외관 검사 시스템으로서,상기 이차 전지를 검사 위치에 따라 이송하는 이송 장치;제1 검사 위치에 배치되어 상기 이차 전지의 상부 및 하부를 검사하는 상하 검사 장치;제2 검사 위치에 배치되어 상기 이차 전지의 측면 및 팽창 여부를 검사하는 측면 검사 장치;상기 제2 검사 위치에 배치되어 상기 이차 전지를 회전시키는 회전 장치를 포함하고,상기 측면 검사 장치는,상기 이차 전지가 상기 이송 장치에 눕혀진 상태에서 상기 이차 전지의 측면 및 팽창 여부를 검사하는 것을 특징으로 하는 외관 검사 시스템.
- 청구항 1에 있어서,상기 이송 장치는,리니어 모션 가이드를 포함하는 컨베이어이고,상기 이차 전지가 상기 리니어 모션 가이드의 직선 운동으로 이송되는 것을 특징으로 하는 외관 검사 시스템.
- 청구항 1에 있어서,상기 상하 검사 장치는,상기 이차 전지의 상부를 검사하는 상부 검사기; 및상기 이차 전지의 하부를 검사하는 하부 검사기를 포함하고,내부에 카메라가 형성된 것을 특징으로 하는 외관 검사 시스템.
- 청구항 1에 있어서,상기 회전 장치는,상기 제2 검사 위치의 진입부에 배치되어 상기 제2 검사 위치에서의 검사가 진행되기 전에 상기 이차 전지의 상하 방향과 상기 이송 장치의 이동 방향이 평행하도록 상기 이차 전지를 회전시키는 제1 회전기를 포함하는 외관 검사 시스템.
- 청구항 1에 있어서,상기 측면 검사 장치는,상기 이차 전지의 측면을 따라 광을 조사하는 광원 장치; 및상기 광원 장치에 의해 조사된 광을 반사시키는 거울을 포함하는 3D 카메라인 것을 특징으로 하는 외관 검사 시스템.
- 청구항 1에 있어서,상기 측면 검사 장치는,상기 이차 전지의 측면 일부를 검사하는 제1 측면 검사기; 및상기 제1 측면 검사기에서 검사되지 않은 상기 이차 전지의 측면 일부를 검사하는 제2 측면 검사기를 포함하는 외관 검사 시스템.
- 청구항 6에 있어서,상기 회전 장치는,상기 제1 측면 검사기와 상기 제2 측면 검사기 사이에 배치되어 상기 이차 전지의 상면과 저면이 서로 반전되도록 상기 이차 전지를 180도 회전시키는 제2 회전기를 포함하는 외관 검사 시스템.
- 청구항 1에 있어서,외관이 검사되는 상기 이차 전지를 기설정된 개수만큼 상기 이송 장치에 적재하는 적재 장치를 더 포함하는 외관 검사 시스템.
- 청구항 1에 있어서,상기 상하 검사 장치 및 상기 측면 검사 장치로부터 측정된 검사 결과에 따라 상기 이차 전지를 판별하는 판별 장치를 더 포함하는 외관 검사 시스템.
- 청구항 9에 있어서,상기 판별 장치와 연결되어 판별이 완료된 상기 이차 전지를 이송하는 제1 컨베이어; 및상기 제1 컨베이어와 연결되어 이상이 있는 상기 이차 전지를 이송하는 제2 컨베이어를 더 포함하는 외관 검사 시스템.
- 청구항 10에 있어서,상기 제1 컨베이어는,판별이 완료된 상기 이차 전지가 각각 개별적으로 담기는 포켓을 포함하는 포켓 컨베이어인 것을 특징으로 하는 외관 검사 시스템.
- 원통형 이차 전지의 외관을 검사하는 외관 검사 방법으로서,적재 장치가 외관이 검사되는 상기 이차 전지를 이송 장치에 적재하는 적재 단계;상기 이송 장치에 의해 상기 이차 전지가 이송되는 이송 단계;상기 이차 전지의 상부 및 하부가 상하 검사 장치에 의해 검사되는 상하 검사 단계;상기 이차 전지가 제1 회전기에 의해 상기 이차 전지의 상하 방향과 상기 이송 장치의 이동 방향이 평행하도록 회전되는 제1 회전 단계;상기 이차 전지의 측면 일부가 제1 측면 검사기에 의해 검사되는 제1 측면 검사 단계;상기 이차 전지의 상면과 저면이 서로 반전되도록 제2 회전기에 의해 상기 이차 전지가 180도 회전되는 제2 회전 단계; 및상기 제1 측면 검사 단계에서 검사되지 않은 상기 이차 전지의 측면 일부가 제2 측면 검사기에 의해 검사되는 제2 측면 검사 단계를 포함하는 외관 검사 방법.
- 청구항 12에 있어서,상기 이송 단계는,상기 이차 전지가 리니어 모션 가이드를 포함하는 상기 이송 장치에 의해 상기 리니어 모션 가이드의 직선 운동으로 이송되는 것을 특징으로 하는 외관 검사 방법.
- 청구항 12에 있어서,상기 제1 측면 검사 단계 및 상기 제2 측면 검사 단계는,상기 제1 측면 검사기 및 상기 제2 측면 검사기가 상기 이차 전지의 측면을 따라 광을 조사하는 광원 장치 및 상기 광원 장치에 의해 조사된 광을 반사시키는 거울을 포함하는 3D 카메라인 것을 특징으로 하는 외관 검사 방법.
- 청구항 12에 있어서,외관 검사가 끝난 상기 이차 전지가 측정된 검사 결과에 따라 판별 장치에 의해 판별되는 판별 단계를 더 포함하는 외관 검사 방법.
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|---|---|---|---|
| ES22911821T ES3048414T3 (en) | 2021-12-20 | 2022-12-19 | System and method for inspecting outer appearance |
| EP22911821.1A EP4403905B1 (en) | 2021-12-20 | 2022-12-19 | System and method for inspecting outer appearance |
| JP2024525912A JP7780640B2 (ja) | 2021-12-20 | 2022-12-19 | 外観検査システムおよび方法 |
| CN202280066043.2A CN118043647A (zh) | 2021-12-20 | 2022-12-19 | 用于检查外观的系统和方法 |
| US18/701,788 US12555834B2 (en) | 2021-12-20 | 2022-12-19 | System and method for inspecting outer appearance |
| CA3241064A CA3241064A1 (en) | 2021-12-20 | 2022-12-19 | System and method for inspecting outer appearance |
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| KR1020210183208A KR102853957B1 (ko) | 2021-12-20 | 2021-12-20 | 외관 검사 시스템 및 방법 |
| KR10-2021-0183208 | 2021-12-20 |
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| WO2023121188A1 true WO2023121188A1 (ko) | 2023-06-29 |
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| KR20250170958A (ko) * | 2024-05-29 | 2025-12-08 | 주식회사 엘지에너지솔루션 | 배터리 셀의 외관 및 치수 검사장치 |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101030449B1 (ko) * | 2009-08-17 | 2011-04-25 | 홍익대학교 산학협력단 | 원통형 이차 전지 외관 검사 장치 |
| KR101954416B1 (ko) * | 2017-02-10 | 2019-03-05 | 주식회사 고영테크놀러지 | 검사 장치 |
| KR102028360B1 (ko) * | 2018-05-24 | 2019-10-07 | 휴비오 주식회사 | 2차 전지의 외관 검사장치 |
| KR102000906B1 (ko) * | 2019-02-20 | 2019-07-16 | 김성직 | 페라이트 외관 비전 검사시스템 |
| KR20200141856A (ko) * | 2019-06-11 | 2020-12-21 | 주식회사 엘지화학 | 이차전지 검사설비 및 검사방법 |
Non-Patent Citations (1)
| Title |
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| See also references of EP4403905A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20240405301A1 (en) | 2024-12-05 |
| EP4403905A4 (en) | 2025-01-29 |
| ES3048414T3 (en) | 2025-12-10 |
| JP7780640B2 (ja) | 2025-12-04 |
| JP2024539367A (ja) | 2024-10-28 |
| EP4403905B1 (en) | 2025-09-03 |
| HUE073165T2 (hu) | 2026-01-28 |
| EP4403905A1 (en) | 2024-07-24 |
| CA3241064A1 (en) | 2023-06-29 |
| CN118043647A (zh) | 2024-05-14 |
| KR20230094056A (ko) | 2023-06-27 |
| KR102853957B1 (ko) | 2025-09-03 |
| US12555834B2 (en) | 2026-02-17 |
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