WO2023080543A1 - 전극 조립체를 수용하는 파우치 컵부의 높이 측정 방법 및 장치 - Google Patents
전극 조립체를 수용하는 파우치 컵부의 높이 측정 방법 및 장치 Download PDFInfo
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- WO2023080543A1 WO2023080543A1 PCT/KR2022/016582 KR2022016582W WO2023080543A1 WO 2023080543 A1 WO2023080543 A1 WO 2023080543A1 KR 2022016582 W KR2022016582 W KR 2022016582W WO 2023080543 A1 WO2023080543 A1 WO 2023080543A1
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- WIPO (PCT)
- Prior art keywords
- pouch
- cup
- height
- cup portion
- measuring
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000005259 measurement Methods 0.000 claims abstract description 40
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 16
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
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- 229910001416 lithium ion Inorganic materials 0.000 description 2
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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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
- G01B11/022—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of tv-camera scanning
-
- 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
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
-
- 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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- 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 invention relates to a method and apparatus for measuring the height of a pouch cup portion accommodating an electrode assembly therein in a non-contact measurement method, and more particularly, to a method and apparatus for measuring the height of a pouch cup portion by minimizing measurement deviation between measurers, thereby improving reliability of measuring the height of the pouch cup portion. It relates to a method and apparatus for measuring the height of a pouch cup portion accommodating an electrode assembly, which can improve the quality of a pouch by improving the quality of the pouch.
- secondary batteries having high energy density, discharge voltage, and excellent output stability.
- secondary batteries include lithium secondary batteries such as lithium-sulfur batteries, lithium ion batteries, and lithium ion polymer batteries.
- the secondary battery as described above can be classified into a cylindrical shape, a prismatic shape, a pouch type, etc. according to its shape, and among them, interest and demand for pouch type battery cells are gradually increasing.
- Pouch-type battery cells can be stacked with a high degree of integration, have high energy density per weight, are inexpensive, and are easy to transform. Therefore, the pouch-type battery cell can be manufactured in a shape and size applicable to various mobile devices and automobiles.
- a typical pouch-type battery cell 10 includes an electrode assembly 30, electrode tabs 40 and 50 extending from the electrode assembly 30, and welded to the electrode tabs 40 and 50.
- a battery case 20 accommodating the electrode leads 60 and 70 and the electrode assembly 30 is included.
- the electrode assembly 30 is composed of a stacked or stacked/folded structure in which an anode and a cathode are sequentially stacked with a separator interposed therebetween.
- the electrode tabs 40 and 50 extend from each electrode plate of the electrode assembly 30, and the electrode leads 60 and 70 are electrically connected to a plurality of electrode tabs 40 and 50 extending from each electrode plate, respectively.
- the battery case 20 is generally made of a laminate sheet containing resin, metal, or a mixture thereof, provides a space for accommodating the electrode assembly 30, and has a pouch shape as a whole.
- the plurality of positive electrode tabs 40 and the plurality of negative electrode tabs 50 may be coupled to the electrode leads 60 and 70 of the battery case 20.
- the inner top may be spaced apart from the electrode assembly 30 .
- a typical pouch-type battery cell electrode assemblies including a positive electrode, a negative electrode, and a separator are stacked and accommodated in a soft battery case (ie, a stacked electrode assembly or a stacked/folded electrode assembly is placed in a battery case). acceptance), and an encapsulation structure having a sealing portion in which the end of the battery case is sealed by thermal fusion.
- the soft packing material sheet constituting the battery case is made of at least one of a resin layer and a metal layer, and by forming a sealing part at the end thereof, it not only prevents the electrode assembly from escaping to the outside, but also prevents the electrode assembly from escaping to the outside. It also serves to protect against impact. That is, the pouch-type battery cell may be manufactured by accommodating the electrode assembly in a battery case (or pouch cup portion), injecting an electrolyte solution, and then going through a step of sealing by thermal fusion or the like.
- the battery case 20 of the pouch type battery cell 10 includes a case 20a accommodating the electrode assembly 30, and the electrode assembly 30 after the electrode assembly 30 is accommodated in the case. ) can be classified as a cover (20b) that covers so that it does not escape.
- the symbol C marked on the case 20a of FIG. 1 is a portion where the electrode assembly 30 is fully accommodated, and may be referred to as a portion where only the sealing portion (or wing portion) is excluded from the case 20a.
- the portion corresponding to the reference numeral C in FIG. 1 is hereinafter referred to as a “pouch cup portion”.
- the pouch cup portion may be formed by forming with a punch or the like. After that, the height (or depth) of the cup portion of the pouch having the cup portion is measured, and when it is confirmed that the cup portion is formed at an appropriate height, an assembly process such as embedding the electrode assembly into the cup portion of the pouch may be performed. That is, in inserting the electrode assembly into the pouch cup portion, the height of the pouch cup portion and its management are very important.
- the height of the cup portion of the pouch having the cup portion is measured through a contact measuring instrument such as a steel ruler or Vernier calipers.
- Figure 2 is a view of measuring the height of the pouch cup portion through a conventional contact-type measuring mechanism, a in Figure 2 corresponds to the steel ruler measurement method, and b in Figure 2 corresponds to the vernier caliper measurement method.
- the steel ruler measurement method two steel rulers may be used, and in the case of the vernier caliper measurement method, measurement is possible by lowering a vertically fixed vernier caliper and bringing it into contact with the measuring unit.
- the subjective judgment of the person measuring is bound to intervene, and accordingly, due to the measurement deviation between measurers, a problem inevitably occurs that the level of reliability of the height measurement of the pouch cup part is lowered. do. Therefore, when the height of the pouch cup portion is measured using a conventional contact-type measuring instrument, the pouch cup portion does not completely meet the specifications of the electrode assembly, which inevitably causes a problem in that the quality of the pouch deteriorates, such as cracks. does not exist.
- an object of the present invention is to provide a method and apparatus for measuring the height of a pouch cup portion accommodating an electrode assembly, which can improve the quality of a pouch by improving the reliability of measuring the height of a pouch cup portion by minimizing measurement deviation between measurers. is to do
- the present invention is a method for measuring the height of a pouch cup portion of a pouch case for a secondary battery, comprising: (a) covering the pouch on a cup portion support jig; (b) exposing a corner portion of the upper surface of the pouch covered with the cup portion support jig to measure the height of the cup portion, and positioning an upper fixing jig to cover the periphery of the exposed corner; (c) positioning a lower fixing jig on the pouch wings and the peripheral bottom of the lower corner portion corresponding to the corner portion, thereby exposing the lower corner portion and covering the other portion; and (d) measuring the height of the cup portion of the corner portion exposed by the upper fixing jig and the lower fixing jig using a 3D shape measuring instrument.
- the present invention is a device for measuring the height of a pouch cup portion of a pouch case for a secondary battery, comprising: a cup support jig having an inner shape of the pouch cup portion so that the pouch cup portion can be covered; an upper fixing jig in the form of a plate exposing a corner portion of an upper surface of the pouch covered with the cup portion support jig to measure a height of the cup portion and covering a periphery of the exposed corner portion; a lower fixing jig in the form of a plate covering the pouch wings and the bottom portion of the lower corner portion corresponding to the corner portion, and exposing the portion around the lower corner portion so that the height of the cup portion can be measured; and a 3D shape measuring device for measuring the height of the corner portion.
- the quality of the pouch can be improved by minimizing the measurement deviation between measurers and improving the reliability of the height measurement of the pouch cup portion.
- FIG. 1 is an exploded perspective view of a conventional pouch-type battery cell.
- Figure 2 is a state of measuring the height of the pouch cup portion through a conventional contact-type measuring mechanism.
- FIG. 3 is a schematic diagram showing a state in which a device for measuring the height of a pouch cup part is provided according to an embodiment of the present invention.
- FIG. 4 is a schematic diagram showing how to form a cup portion in a pouch before molding.
- FIG. 5 is a perspective view showing a state in which a cup support jig is provided and fixed on a separate support according to another embodiment of the present invention.
- FIG. 6 is a perspective view showing a state in which two cup support jigs are provided and fixed on a separate support according to another embodiment of the present invention.
- FIG. 7 is an upper perspective view showing a state in which a pouch covered on a cup support jig is pressurized and fixed with an upper fixing jig and a pouch wing portion is pressurized and fixed with a lower fixing jig according to an embodiment of the present invention.
- the method for measuring the height of the pouch cup portion accommodating the electrode assembly according to the present invention is a method of measuring the height of the pouch cup portion C of a pouch case for a secondary battery (for example, both ends of the pouch).
- the pouch 200 is placed on the cup portion support jig 100 Covering step, (b) exposing a corner portion to measure the height of the cup portion (C) of the upper surface of the pouch 200 covered with the cup portion support jig 100, and using an upper fixing jig 300 to cover the exposed corner periphery Positioning step, (c) positioning the lower fixing jig 400 on the pouch wings (W) of the lower corner portion corresponding to the corner portion and the peripheral bottom portion, thereby exposing the lower corner portion and covering the other portion and (d) measuring the cup height h of the corner portion exposed by the upper fixing jig and the lower fixing jig using a 3D shape measuring instrument.
- the pouch cup portion may be formed by forming with a punch or the like.
- 4 is a schematic diagram showing the formation of a cup portion in a pouch before molding. As shown in FIG. 4, both ends of the pouch 200 are sandwiched between a stripper 90 and a die 92. After fixing, the center of the pouch 200 is pressed with a punch 94, and at the same time, the stripper 90 and the die 92 on both sides of the pouch 200 are raised together to form a cup portion in the pouch. After that, the height (or depth) of the cup portion of the pouch having the cup portion is measured, and when it is confirmed that the cup portion is formed at an appropriate height, an assembly process such as embedding the electrode assembly into the cup portion of the pouch may be performed. That is, in inserting the electrode assembly into the pouch cup portion, the height of the pouch cup portion and its management are very important.
- the height of the cup portion of the pouch formed with the cup portion is measured through a contact-type measuring instrument such as a steel ruler or Vernier Calipers, as shown in FIG. .
- a contact-type measuring instrument such as a steel ruler or Vernier Calipers
- the subjective judgment of the person measuring (or measurer) is bound to intervene, and accordingly, due to the measurement deviation between measurers, a problem inevitably occurs that the level of reliability of the height measurement of the pouch cup part is lowered. do. Therefore, when the height of the pouch cup portion is measured using a conventional contact-type measuring instrument, the pouch cup portion does not completely meet the specifications of the electrode assembly, which inevitably causes a problem in that the quality of the pouch deteriorates, such as cracks. (In particular, cracks occur when the pouch cup portion is smaller than the electrode assembly).
- the present applicant objectively measures the height of the pouch cup without intervening subjective judgment of the measurer, thereby increasing overall reliability of measurement values such as accuracy, repeatability and reproducibility compared to the existing ones, thereby improving the quality of the pouch. that invented the technology.
- step a the step of covering the pouch 200 on the cup portion support jig 100, that is, covering the pouch 200 on the cup portion support jig 100 having the shape of the formed pouch cup portion C, so that the pouch A step of accommodating the cup portion support jig 100 in the cup portion C of (200) is performed (step a). Since the cup support jig 100 is for maintaining the shape of the cup portion C of the pouch 200, the shape of the cup portion C of the pouch 200 should be identical to that of the pouch cup portion C, and therefore, it is desirable that the error should be as small as possible.
- FIG. 5 is a perspective view showing a state in which a cup support jig is provided and fixed on a separate support according to another embodiment of the present invention.
- the cup portion support jig 100 may be provided on a separate stand 110 . This is to improve the convenience of mounting the pouch by fixing the cup support jig 100, and as shown in FIG. 5, screws or It can be fastened and fixed to each other with a member such as a pin.
- the pedestal 110 may be placed on a die, and if necessary, a member such as a screw or pin may pass through the die to further improve fixing force.
- a magnet may be provided on one of the cup support jig 100 and the support 110, and the other is made of a material such as steel to which a magnet can be attached, so that they can be attached and fixed to each other. may be
- the cup heights of the remaining three corner portions may be sequentially measured.
- the pouch 200 or the cup support jig 100 can be rotated 90 degrees, 180 degrees, or 270 degrees to measure the height of the other corner of the cup portion, and the pouch 200 or the cup portion support jig 100 After the pedestal 110 is rotated 90 degrees, 180 degrees, or 270 degrees, it is fastened to the pedestal 110 with a screw member or a pin member or attached through magnetic coupling, and the corner height of the pouch cup portion C is rotated. can be measured sequentially.
- a virtual cross is marked on one corner of the cup support jig 100, and the intersection of the cross mark is the camera center point or measurement point of the 3D shape measuring instrument used to measure the height of the pouch cup.
- the cup portion support jig 100 is fixed to either side (left or right) of the cross center point reference support 110, even if the area to be measured of the cup portion is changed (that is, the pouch on the support 110)
- the cup support jig 100 is rotated 90 degrees (°), 180 degrees, or 270 degrees)
- the height of the cup portion C can be measured directly without moving the support 110 in the X-axis and Y-axis. there is.
- the measured value may be macro-calculated to determine the height (h) of the pouch cup portion (C). Since it is not necessary to additionally set a macro, there is also an advantage of minimizing the deviation of the measured value of the height of the cup portion of the pouch. Therefore, it is preferable to install the cup support jig 100 and the support 110 fixed to each other in alignment with the camera center point or measurement point of the 3D shape measuring instrument.
- the 3D shape measuring device is placed on the side of the other corner portion of the cup portion C to measure the cup portion C that has not been measured.
- the heights of other corners of may be sequentially measured.
- FIG. 6 is a perspective view showing a state in which two cup support jigs are provided and fixed on a separate support according to another embodiment of the present invention. This is for measuring the height of the cup part of a model in which two cup parts are formed in one pouch. Since the pouch model in which two cup parts are formed has a larger standard than the pouch model in which one cup part is formed, the pouch or cup part is placed on the pedestal 110. It is to compensate for the problem of not rotating the supporting jig 100 at 90 degrees, 180 degrees or 270 degrees.
- the camera center point or measurement point of the 3D shape measuring device is set to the center of the pedestal 110 (that is, the corner portion where the two cup support jigs face each other), and the cup support jig 2 It is also placed on the outer edge of each dog, so that the height of the pouch cup portion can be measured without rotating the pouch or cup support jig 100 .
- a liner plate (not shown) for height adjustment is placed on the upper surface of the cup portion supporting jig 100 or It can be inserted facing the lower surface. Holes that can be formed in the cup portion supporting jig 100 and the pedestal 110 may also be formed in the liner plate for height adjustment, and mutual fastening is possible using members such as screws or pins. In addition, it goes without saying that attachment using magnetic force is also possible.
- step b a step of pressurizing and fixing the pouch 200 covered with the cup support jig 100 by positioning the upper fixing jig 300 so as to cover the periphery of the exposed corner is performed.
- step c by positioning the lower fixing jig 400 on the pouch wings (W) of the lower corner portion corresponding to the corner portion and the surrounding bottom portion, the periphery of the lower corner portion is exposed and the other portion is covered while simultaneously pouch wings ( W) and pressing and fixing the peripheral bottom portion are performed.
- FIG. 7 is an upper perspective view showing a state in which a pouch covered on a cup support jig is pressurized and fixed with an upper fixing jig and a pouch wing portion is pressurized and fixed with a lower fixing jig according to an embodiment of the present invention.
- the upper fixing jig 300 is placed on the cup portion C of the pouch 200 to secure the pouch ( 200) is pressed and fixed, and the lower fixing jig 400 is placed on the pouch wings (W) and the surrounding bottom portion to press and fix the pouch wings (W).
- one of the upper fixing jig 300 and the cup support jig 100 may have a magnet, and the other one is made of a material such as steel to which a magnet can be attached, and can be attached to each other
- the pouch 200 interposed between the upper fixing jig 300 and the cup support jig 100, more specifically, the cup portion C of the pouch 200 can be fixed.
- the lower fixing jig 400 may fix the pouch wings W interposed between the lower fixing jig 400 and the bottom surface by magnetically attaching to the bottom surface or by screwing with the bottom surface.
- the upper fixing jig 300 and the lower fixing jig 400 may each fix the pouch 200 by magnetic force or the like.
- the lower fixing jig 400 may also be fixed to the pedestal 110 like the cup portion supporting jig 100, and in this case, the pouch wings (W ) may be interposed and fixed between the lower fixing jig 400 and the pedestal 110.
- the upper fixing jig ( 300) and the lower fixing jig 400 must be separated from the pouch 200.
- the upper fixing jig 300 is magnetically coupled to the cup support jig 100, it is not easy to separate it. Therefore, in this case, as shown in FIG. 7, the upper fixing jig knob 310 is fixedly coupled to one end of the upper surface of the upper fixing jig 300, and the upper fixing jig 300 is more easily removed.
- the lower fixing jig 400 can pay And, even when the lower fixing jig 400 is magnetically coupled to the pedestal 110, the lower fixing jig is more easily fixed by fixing the lower fixing jig knob 410 to one end of the upper surface of the lower fixing jig 400. (400) can be removed.
- the upper fixing jig 300 and the lower fixing jig 400 preferably have a color of 5 or less in brightness to reduce reflection of a laser irradiated from the 3D shape measuring device. And, as the color having a brightness of 5 or less, black or a color close thereto is preferable. This is to compensate for the problem that the measurement of the height (h) of the cup portion (C) of the pouch may be inaccurate due to the nature of the pouch including a material such as aluminum due to the reflection of the laser irradiated from the 3D shape measuring device.
- the upper fixing jig 300 and the lower fixing jig 400 are measured through a 3D shape measuring device.
- a step of measuring the height h of the cup portion of the corner portion exposed by is performed (step d).
- the 3D shape measuring device is used to measure the height of the pouch cup portion, and after setting a specific position of the pouch cup portion (C) to be measured as a measurement point or a camera center point of the 3D shape measuring device, by irradiating a laser from the 3D shape measuring device, The height h of the cup portion of the corner portion exposed by the upper fixing jig 300 and the lower fixing jig 400 may be measured.
- the height h of one edge portion between the interface between the upper fixing jig 300 and the cup support jig 100 and the interface between the lower fixing jig 400 and the bottom surface can be measured.
- a corner portion in which the shape of the pouch cup portion (C) is best maintained is preferable, and specifically, the height direction connecting one vertex and the vertex facing it It may be a corner portion of That is, it is preferable to set the intersection point of the cross mark in FIG. 5 or 6 as the measurement point or the camera center point of the 3D shape measuring device.
- the pouch or cup portion support jig 100 is rotated 90 degrees, 180 degrees, or 270 degrees to measure the other corner of the pouch cup portion C to be measured. Height can be measured sequentially.
- cup portion supporting jig 100 may be accommodated in each cup portion, or individual cup portion supporting jig 100 may be accommodated at each corner.
- the upper fixing jig 300 is brought into close contact with the pouch cup portion (c) to be measured as closely as possible in the direction of one edge, and the lower fixing jig 400 is attached to the pouch cup portion.
- (c) may be provided so that the two sides adjacent to one side edge are wrapped at the same time.
- the lower fixing jig 400 may have an 'L' shape including two wing parts, and at this time, the two wing parts simultaneously cover two side surfaces adjacent to one edge of the pouch cup part (c). can be provided.
- the lower fixing jig 400 is used as described above, there is an advantage in that the same lower fixing jig 400 can be continuously used while changing only the position or angle even if the height of the other corner of the pouch cup portion c is measured.
- the lower fixing jig 400 may include inclined surfaces 420 formed on each of the wing parts that come into contact with the pouch cup part C.
- the inclined surface 420 formed on each of the wing parts may have a shape approaching the bottom surface (or pouch wing part) by gradually lowering toward the pouch cup part C, as shown in FIG. 7 . Since this corresponds to a taper design in consideration of the angle of entry and reflection of the laser irradiated from the 3D shape measuring device (ie, considering that the laser irradiated from the 3D shape measuring device is entered or reflected through the inclined surface 420), as much as possible It is preferable to form the inclined surface 420 on the lower fixing jig 400 .
- the laser of the 3D shape measuring device in order to accurately measure the height of the pouch cup portion C, the laser of the 3D shape measuring device must be irradiated without being hindered by obstacles. Accordingly, it is preferable that the upper fixing jig 300 is not located at the corner end of the pouch cup part C so that the laser of the 3D shape measuring instrument can normally enter (that is, the measuring part is exposed). In other words, the upper fixing jig 300 preferably includes a recessed part recessed into the corner of the pouch cup part C so that the laser of the 3D shape measuring instrument can enter or the measuring part can be exposed.
- FIG. 7 shows a state in which one end of the upper fixing jig 300 located on the side of the measuring part is recessed or rounded to the inside to expose the measuring part as an embodiment, and in addition to this, the measuring part is exposed through various shapes. It is natural that it can be done.
- the lower fixing jig 400 should not interfere with the laser irradiation of the 3D shape measuring device. Accordingly, it is preferable that the lower fixing jig 400 is not located at a portion facing the corner of the pouch cup portion C so that the laser of the 3D shape measuring instrument can normally enter (that is, to expose the measurement portion). . That is, in the lower fixing jig 400, it is preferable that a bottom exposure portion 430 exposing the bottom is further formed in a concave shape at a bent portion that comes into contact with the pouch cup portion C.
- the bottom exposed part 430 exposing the bottom of the bent part in contact with the pouch cup part C is formed in an intaglio shape to expose the measuring part.
- the figure is shown, and in addition to this, it will be natural that the measurement part can be exposed through various intaglio shapes.
- the bottom exposed part 430 may be formed in a shape symmetrical to the shape of the lower fixing jig 400 (for example, 'B' shape) based on both vertices of the lower fixing jig 400.
- this design is also designed in consideration of the angle of entry and reflection of the laser irradiated from the 3D shape measuring device.
- the height h of the cup portion of the corner portion exposed by the upper fixing jig 300 and the lower fixing jig 400 can be measured through the 3D shape measuring instrument.
- 8 is an image in which a plurality of profile measuring lines are set from the corner of the cup part of the upper fixture to the side of the lower fixture through the captured image obtained through the laser irradiated from the 3D shape measuring instrument and the camera of the 3D shape measuring instrument. Specifically, first, a captured image obtained through a laser irradiated from the 3D shape measuring device and a camera of the 3D shape measuring device is acquired. Subsequently, as shown in FIG.
- a plurality of profile measurement lines are set from the corner of the cup portion of the upper fixing jig 300 to the side of the lower fixing jig 400 through the obtained captured image, and their The height value of the pouch cup portion C can be obtained by calculating the difference between the highest point and the lowest point based on the average value (based on the average value of multiple points in consideration of the possibility of error or deviation when measuring based on a local point) referred to as). For example, a total of 5 profile measurement lines may be set, and an interval between the measurement lines may be 0.25 mm.
- the measured value is macro-calculated to calculate the height (h) of the pouch cup portion (C). ) can be determined.
- the macro operation may be performed through a macro program reproduced under the same conditions as the pouch cup measurement design standard of the present invention, and may be performed within the 3D shape measuring device or through a separately provided device.
- the device for measuring the height of the pouch cup portion according to the present invention is a device for measuring the height of the pouch cup portion (C) of a pouch case for a secondary battery, so that the pouch cup portion (C) can be covered with a pouch A cup portion support jig 100 having an internal shape of the cup portion C, and an upper surface of the pouch 200 covered by the cup portion support jig 100, to expose a corner portion to measure the height of the cup portion C, and the exposed corner
- An upper fixing jig 300 in the form of a plate covering the periphery of the portion, covering the pouch wing portion (W) of the lower corner portion corresponding to the corner portion and the peripheral bottom portion, and measuring the height of the cup portion (C) around the lower corner portion. It includes a lower fixing jig 400 in the form of a plate to expose and a 3D shape measuring device for measuring the height of the corner portion.
- the cup portion support jig 100 may be provided on a separate support 110 .
- a hole may be formed in each of the cup support jig 100 and the support 110, and through this hole, a member such as a screw or pin is used to connect the cup support jig 100 and the support 110 to each other. It can be fastened and fixed.
- the pedestal 110 may be placed on a die, and if necessary, a member such as a screw or pin may pass through the die to further improve fixing force.
- a magnet may be provided on one of the cup support jig 100 and the support 110, and the other is made of a material such as steel to which a magnet can be attached, and may be attached and fixed to each other.
- cup support jig 100 and the support 110 it is preferable to mutually fix the cup support jig 100 and the support 110 by aligning them with the camera center point or measurement point of the 3D shape measuring instrument. Only then, even if the pouch 200 or the cup support jig 100 is rotated 90 degrees, 180 degrees, or 270 degrees on the pedestal 110, the height of the cup portion C can be increased without moving the pedestal 110 along the X-axis and Y-axis. (h) because it is measurable.
- two cup support jigs 100 may be placed side by side on the support 110 . This is a case for measuring the height of the cup portion of a model in which two cup portions are formed in the pouch.
- the pouch or cup portion is placed on the pedestal 110 It is to compensate for the problem of not rotating the jig 100 at 90 degrees, 180 degrees or 270 degrees.
- a liner plate (not shown) for height adjustment is placed on the upper surface of the cup portion supporting jig 100 or It can be inserted facing the lower surface.
- Holes that can be formed in the cup portion supporting jig 100 and the pedestal 110 may also be formed in the liner plate for height adjustment, and mutual fastening is possible using members such as screws or pins. In addition, fixation using magnetic force is also possible.
- the upper fixing jig 300 is preferably positioned as close as possible to one edge of the pouch cup portion C to be measured, and the lower fixing jig 400 is located on one side of the pouch cup portion C. It is preferable to position the two wings adjacent to the corner at the same time so that the two wing parts wrap (that is, the lower fixing jig 400 simultaneously wraps the two sides adjacent to one corner of the pouch cup portion C). contains two wings).
- an inclined surface may be formed on each of the wing parts that come into contact with the pouch cup part C, as shown in FIG. 7 .
- the inclined surface formed on each of the wing parts may be lowered toward the pouch cup part C and approach the bottom surface (or pouch wing part).
- the upper fixing jig 300 is not located at the corner end of the pouch cup part C so that the laser of the 3D shape measuring instrument can normally enter (that is, the measuring part is exposed).
- the upper fixing jig 300 preferably includes a recessed part recessed into the corner of the pouch cup part C so that the laser of the 3D shape measuring instrument can enter or the measuring part can be exposed. 7 shows a state in which one end of the upper fixing jig 300 located on the side of the measurement unit is recessed or curved to expose the measurement unit as an embodiment, and in addition, the measurement unit can be exposed through various shapes. there is.
- the lower fixing jig 400 is also preferably not located at a portion facing the edge of the pouch cup portion C so that the laser of the 3D shape measuring device can normally enter (that is, the measurement portion is exposed). That is, in the lower fixing jig 400, it is preferable that a bottom exposure portion 430 exposing the bottom is further formed in a concave shape at a bent portion that comes into contact with the pouch cup portion C. 7, as an embodiment, in the 'L'-shaped lower fixing jig 400, the bottom exposed part 430 exposing the bottom of the bent part in contact with the pouch cup part C is formed in an intaglio shape to expose the measuring part. The shape is shown, and in addition to this, the measurement unit may be exposed through various shapes.
- the bottom exposed part 430 will be formed in a shape symmetrical to the shape of the lower fixing jig 400 (for example, 'B' shape) based on both vertices of the lower fixing jig 400. It may be, but is not limited thereto.
- the upper fixing jig 300 and the lower fixing jig 400 may be fixed by magnetic force or the like, respectively.
- the upper fixing jig 300 and the lower fixing jig 400 preferably have a color of 5 or less in brightness to reduce reflection of the laser irradiated from the 3D shape measuring device. And, as the color having a brightness of 5 or less, black or a color close thereto is preferable.
- the 3D shape measuring device provides a captured image obtained through a laser and a camera, and when the cup height (h) value of the exposed corner portion is measured through this, the measured value is macro-calculated to calculate the height of the pouch cup portion (C) (h) can be determined.
- the macro operation may be performed through a macro program reproduced under the same conditions as the pouch cup measurement design standard of the present invention, and may be performed within the 3D shape measuring device or through a separately provided device.
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Abstract
Description
Claims (23)
- 이차전지용 파우치 케이스의 파우치 컵부의 높이를 측정하는 방법으로서,(a) 컵부 받침 지그에 파우치를 씌우는 단계;(b) 상기 컵부 받침 지그에 씌워진 파우치 상부면 중 컵부 높이를 측정할 모서리부를 노출하고, 상기 노출된 모서리 주변은 덮도록 상부 고정 지그를 위치시키는 단계;(c) 상기 모서리부에 대응되는 하부 모서리부의 파우치 날개부 및 주변 바닥부에 하부 고정 지그를 위치시켜서, 상기 하부 모서리부 주변은 노출시키고 다른 부분은 덮는 단계; 및(d) 3D 형상 측정기를 통해, 상기 상부 고정 지그와 하부 고정 지그에 의해 노출된 모서리부의 컵부 높이를 측정하는 단계;를 포함하는 파우치 컵부의 높이 측정 방법.
- 청구항 1에 있어서, 상기 파우치 컵부의 높이 측정 방법을 통해 어느 한 모서리부의 컵부 높이 측정이 완료되면, 나머지 3개 모서리부의 컵부 높이를 순차적으로 측정하는 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 청구항 2에 있어서, 상기 파우치 컵부의 높이 측정 방법을 통해 어느 한 모서리부의 컵부 높이 측정이 완료되면, 상기 파우치 또는 컵부 받침 지그를 90도, 180도 또는 270도로 회전시켜 컵부의 다른 모서리부 높이를 측정하며, 상기 모서리는 하나의 꼭짓점과 이에 마주한 꼭짓점을 연결하는 높이 방향의 모서리인 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 청구항 3에 있어서, 상기 컵부 받침 지그는 별도의 받침대 위에 구비되고, 상기 컵부 받침 지그가 상기 받침대 위에서 90도, 180도 또는 270도로 회전 완료된 후에는 상기 받침대와 나사 부재 또는 핀 부재로 체결되거나 자력 결합을 통해 부착되어, 상기 모서리부의 컵부 높이를 돌려가며 순차적으로 측정하는 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 청구항 4에 있어서, 상기 파우치의 컵부 높이와 컵부 받침 지그의 높이 간에 차이가 있으면 높이 조절용 라이너 플레이트를 컵부 받침 지그의 상부면 또는 하부면에 대면되게 삽입하여 파우치 컵부의 높이를 측정하며, 상기 높이 조절용 라이너 플레이트가 상기 컵부 받침 지그 및 받침대와 나사 부재 또는 핀 부재로 체결되거나 자력으로 부착되는 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 청구항 2에 있어서, 상기 파우치 컵부의 높이 측정 방법을 통해 어느 한 모서리부의 컵부 높이 측정이 완료되면, 상기 3D 형상 측정기를 컵부의 다른 모서리부 측에 위치시켜, 측정되지 않은 컵부의 다른 모서리부 높이를 측정하는 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 청구항 1에 있어서, 상기 3D 형상 측정기를 통해 모서리부의 컵부 높이를 측정한 후에는, 측정된 값을 매크로 연산하여 파우치 컵부의 높이를 결정하는 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 청구항 1에 있어서, 상기 상부 고정 지그와 하부 고정 지그는 반사를 감소시키는 명도 5 이하의 색상을 갖는 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 청구항 1에 있어서, 상기 상부 고정 지그와 하부 고정 지그는 각각 자력으로 파우치를 고정하는 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 청구항 1에 있어서, 상기 파우치 컵부가 2개 형성된 파우치의 컵부 높이 측정 시에는 컵부 받침 지그가 2개의 컵부 각각에 하나씩 수용되고, 파우치 또는 컵부 받침 지그를 회전시키지 않고도 상기 2개의 컵부 받침 지그가 마주하는 모서리부와 컵부 받침 지그 각각의 외측 모서리부의 파우치 컵부 높이를 측정하는 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 청구항 1에 있어서, 상기 상부 고정 지그는 측정하고자 하는 파우치 컵부의 일측 모서리 방향으로 밀착시키고, 상기 하부 고정 지그는 상기 파우치 컵부의 일측 모서리에 인접한 2개 측면을 동시에 감싸는 형태가 되도록 구비시키는 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 청구항 11에 있어서, 상기 하부 고정 지그는 상기 파우치 컵부의 일측 모서리에 인접한 2개 측면을 동시에 감싸는 2개의 날개부를 포함하고, 상기 날개부 각각이 상기 파우치 컵부 측으로 갈수록 낮아지는 경사면을 포함하며, 상기 경사면을 통해 3D 형상 측정기로부터 조사되는 레이저가 진입 또는 반사되는 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 청구항 11에 있어서, 상기 상부 고정 지그는, 상기 3D 형상 측정기의 레이저가 진입할 수 있도록 또는 측정부가 노출되도록 파우치 컵부의 모서리부에 내측으로 함입된 함입부를 포함하는 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 청구항 11에 있어서, 상기 3D 형상 측정기의 레이저가 진입할 수 있도록 또는 측정부가 노출되도록, 상기 하부 고정 지그에서 상기 파우치 컵부와 맞닿는 절곡부에는 바닥을 노출시키는 바닥 노출부가 음각 형상으로 더 형성된 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 청구항 1에 있어서, 상기 3D 형상 측정기에서 조사되는 레이저와 3D 형상 측정기의 카메라를 통해 얻어지는 촬상 이미지를 획득하고, 상기 얻어진 촬상 이미지를 통해 상기 상부 고정 지그의 컵부 모서리 측에서 상기 하부 고정 지그 측 방향으로 프로파일 측정선을 다수 개 설정하고, 이들의 평균값을 기준으로 최고점과 최저점의 차이를 계산함으로써 파우치 컵부의 높이 값을 얻을 수 있는 것을 특징으로 하는, 파우치 컵부의 높이 측정 방법.
- 이차전지용 파우치 케이스의 파우치 컵부 높이를 측정하는 장치로서,파우치 컵부가 씌워질 수 있도록 파우치 컵부의 내부 형상을 갖는 컵부 받침 지그;상기 컵부 받침 지그에 씌워지는 파우치 상부면 중 컵부 높이를 측정할 모서리부를 노출하고, 상기 노출된 모서리부 주변부를 덮는 플레이트 형태의 상부 고정 지그;상기 모서리부에 대응되는 하부 모서리부의 파우치 날개부 및 주변 바닥부를 덮고, 상기 하부 모서리부 주변은 컵부 높이 측정이 가능하게 노출시키는 플레이트 형태의 하부 고정 지그; 및상기 모서리부의 높이를 측정하는 3D 형상 측정기;를 포함하는 파우치 컵부의 높이 측정 장치.
- 청구항 16에 있어서, 상기 하부 고정 지그는 상기 파우치 컵부의 일측 모서리에 인접한 2개 측면을 동시에 감싸는 2개의 날개부를 포함하는 것을 특징으로 하는, 파우치 컵부의 높이 측정 장치.
- 청구항 17에 있어서, 상기 하부 고정 지그가 상기 파우치 컵부와 맞닿는 날개부 각각에 형성되어 파우치 컵부 측으로 갈수록 낮아지는 경사면을 포함하는 것을 특징으로 하는, 파우치 컵부의 높이 측정 장치.
- 청구항 17에 있어서, 상기 하부 고정 지그에서 상기 파우치 컵부와 맞닿는 절곡부에는 바닥을 노출시키는 바닥 노출부가 음각 형상으로 더 형성된 것을 특징으로 하는, 파우치 컵부의 높이 측정 장치.
- 청구항 19에 있어서, 상기 바닥 노출부는 상기 하부 고정 지그의 양 꼭짓점을 기준으로 상기 하부 고정 지그의 형상에 대칭되는 형상으로 형성되는 것을 특징으로 하는, 파우치 컵부의 높이 측정 장치.
- 청구항 16에 있어서, 상기 상부 고정 지그는 파우치 상부면 중 모서리 주변을 덮을 수 있는 형태를 가지며, 파우치 컵부의 모서리부가 노출될 수 있도록 모서리부에 내측으로 함입된 함입부를 포함하는 것을 특징으로 하는, 파우치 컵부의 높이 측정 장치.
- 청구항 16에 있어서, 상기 상부 고정 지그와 하부 고정 지그는 각각 자력에 의해 고정되는 것을 특징으로 하는, 파우치 컵부의 높이 측정 장치.
- 청구항 16에 있어서, 상기 상부 고정 지그와 하부 고정 지그는 반사를 감소시키는 명도 5 이하의 색상을 갖는 것을 특징으로 하는, 파우치 컵부의 높이 측정 장치.
Priority Applications (3)
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CN202280009809.3A CN116745574A (zh) | 2021-11-03 | 2022-10-27 | 测量容纳电极组件的袋杯部的高度的方法和设备 |
EP22890278.9A EP4293316A1 (en) | 2021-11-03 | 2022-10-27 | Method and device for measuring height of pouch cup portion accommodating electrode assembly |
JP2023541881A JP2024503650A (ja) | 2021-11-03 | 2022-10-27 | 電極組立体を収容するパウチカップ部の高さ測定方法及び装置 |
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KR1020210149899A KR20230064378A (ko) | 2021-11-03 | 2021-11-03 | 전극 조립체를 수용하는 파우치 컵부의 높이 측정 방법 및 장치 |
KR10-2021-0149899 | 2021-11-03 |
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WO2023080543A1 true WO2023080543A1 (ko) | 2023-05-11 |
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EP (1) | EP4293316A1 (ko) |
JP (1) | JP2024503650A (ko) |
KR (1) | KR20230064378A (ko) |
CN (1) | CN116745574A (ko) |
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KR20170142050A (ko) * | 2016-06-16 | 2017-12-27 | 주식회사 엘지화학 | 이차전지용 파우치 외장재 깊이 측정장치 및 이를 이용한 측정방법 |
KR20190074496A (ko) * | 2017-12-20 | 2019-06-28 | 조선대학교산학협력단 | 프레스 가공품 3차원 측정용 범용 검사구 |
KR102187988B1 (ko) * | 2018-12-13 | 2020-12-07 | (주)제이디 | 배터리 치수 검사 장치 |
KR102193564B1 (ko) * | 2020-09-14 | 2020-12-21 | 장석현 | 배터리모듈 케이스 외관 자동 검사장비의 제어방법 |
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2021
- 2021-11-03 KR KR1020210149899A patent/KR20230064378A/ko unknown
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2022
- 2022-10-27 CN CN202280009809.3A patent/CN116745574A/zh active Pending
- 2022-10-27 JP JP2023541881A patent/JP2024503650A/ja active Pending
- 2022-10-27 WO PCT/KR2022/016582 patent/WO2023080543A1/ko active Application Filing
- 2022-10-27 EP EP22890278.9A patent/EP4293316A1/en active Pending
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CN103900448A (zh) * | 2014-03-28 | 2014-07-02 | 泉州市双塔汽车零件有限公司 | 一种碗形塞锥角柔性检具 |
CN204461301U (zh) * | 2015-03-17 | 2015-07-08 | 苏州市东吴滚针轴承有限公司 | 冲压外圈凸台尺寸的检测装置 |
KR20170142050A (ko) * | 2016-06-16 | 2017-12-27 | 주식회사 엘지화학 | 이차전지용 파우치 외장재 깊이 측정장치 및 이를 이용한 측정방법 |
KR20190074496A (ko) * | 2017-12-20 | 2019-06-28 | 조선대학교산학협력단 | 프레스 가공품 3차원 측정용 범용 검사구 |
KR102187988B1 (ko) * | 2018-12-13 | 2020-12-07 | (주)제이디 | 배터리 치수 검사 장치 |
KR102193564B1 (ko) * | 2020-09-14 | 2020-12-21 | 장석현 | 배터리모듈 케이스 외관 자동 검사장비의 제어방법 |
Also Published As
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KR20230064378A (ko) | 2023-05-10 |
CN116745574A (zh) | 2023-09-12 |
EP4293316A1 (en) | 2023-12-20 |
JP2024503650A (ja) | 2024-01-26 |
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