WO2021241960A1 - 이차전지 제조방법 및 이차전지 제조장치 - Google Patents
이차전지 제조방법 및 이차전지 제조장치 Download PDFInfo
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- WO2021241960A1 WO2021241960A1 PCT/KR2021/006416 KR2021006416W WO2021241960A1 WO 2021241960 A1 WO2021241960 A1 WO 2021241960A1 KR 2021006416 W KR2021006416 W KR 2021006416W WO 2021241960 A1 WO2021241960 A1 WO 2021241960A1
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- electrode
- notching
- unit
- secondary battery
- inspection
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
- B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
- B26D5/34—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier scanning being effected by a photosensitive device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/083—Devices involving movement of the workpiece in at least one axial direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/065—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates for thin material, e.g. for sheets, strips or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
- B26F1/12—Perforating by punching, e.g. with relatively-reciprocating punch and bed to notch margins of work
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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
- H01M10/04—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
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
- H01M10/0409—Machines for assembling batteries for cells with wound electrodes
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
- B26D2001/0066—Cutting members therefor having shearing means, e.g. shearing blades, abutting blades
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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 a secondary battery manufacturing method and secondary battery manufacturing apparatus.
- Secondary batteries unlike primary batteries, can be recharged, and have been widely researched and developed in recent years due to their small size and large capacity. As technology development and demand for mobile devices increase, the demand for secondary batteries as an energy source is rapidly increasing.
- the secondary battery is classified into a coin-type battery, a cylindrical battery, a prismatic battery, and a pouch-type battery according to the shape of the battery case.
- an electrode assembly mounted inside a battery case is a charging/discharging power generating element having a stacked structure of an electrode and a separator.
- the electrode assembly is a sheet-type sheet-type electrode assembly coated with an active material, with a separator interposed between the positive electrode and the negative electrode, and is a jelly-roll type, and a stack type in which a plurality of positive and negative electrodes are sequentially stacked with a separator interposed therebetween. , and stacked unit cells can be roughly classified into a stack/folding type in which a long-length separation film is wound.
- the notching operation of the electrode was performed through a mold press.
- the shape cannot be changed in the notching unless the mold is exchanged, and when the electrode is defective before the notching process, the operation of the device is stopped to indicate the defect by a person. After that, even after the notching process, the production speed is reduced to indicate defects, and the marking is being processed. Accordingly, there is a problem in that manufacturing productivity is lowered.
- Patent Document Korean Patent Laid-Open No. 10-2014-0015647
- One aspect of the present invention is to provide a secondary battery manufacturing method and secondary battery manufacturing apparatus capable of improving manufacturing productivity by enabling continuous operation without floating equipment during manufacturing of the secondary battery.
- a secondary battery manufacturing method includes an electrode supply step of supplying an electrode through an electrode supply unit, and a first inspection step of detecting and discriminating a normal electrode portion and an abnormal electrode portion from the supplied electrode by a first inspection unit and a notching step of notching the electrode that has undergone the first inspection step in a notching portion, wherein the notching step is performed through a laser to distinguish the normal electrode portion and the abnormal electrode portion detected in the first inspection step. can be punctuated.
- the secondary battery manufacturing apparatus includes an electrode supply unit for supplying an electrode, a first inspection unit for detecting and discriminating between a normal electrode portion and an abnormal electrode portion from the supplied electrode, and the first inspection unit a notching part for notching the electrode may be included, and the notched part may be notched using a laser to distinguish the normal electrode part and the abnormal electrode part detected by the first inspection part.
- the production productivity can be improved as continuous operation is possible without floating equipment by notching the normal electrode part and the abnormal electrode part of the electrode into different shapes through a laser. Thereafter, when manufacturing a plurality of cells including notched electrodes, defective cells including abnormal electrode parts notched as abnormal electrode parts can be detected and discharged, and continuous operation is possible without floating equipment, resulting in manufacturing productivity This can be significantly improved.
- FIG. 1 is a front view illustrating an apparatus for manufacturing a secondary battery according to an embodiment of the present invention.
- FIG. 2 is a perspective view illustrating a first inspection step and a notching step in a method for manufacturing a secondary battery according to an embodiment of the present invention.
- FIG 3 is a front view illustrating an apparatus for manufacturing a secondary battery according to another embodiment of the present invention.
- FIG. 4 is a perspective view illustrating a first inspection step and a notching step in a method for manufacturing a secondary battery according to another embodiment of the present invention.
- FIG. 5 is a perspective view illustrating a second inspection step, a cell cutting step, and a discharging step in a method for manufacturing a secondary battery according to another embodiment of the present invention.
- FIG. 1 is a front view exemplarily showing a secondary battery manufacturing apparatus according to an embodiment of the present invention
- FIG. 2 is a perspective view showing a first inspection step and a notching step in a secondary battery manufacturing method according to an embodiment of the present invention .
- the electrode supply step of supplying the electrode 10, the normal electrode portion and the abnormal electrode portion in the electrode 10 are first inspected ( V1) includes a first inspection step of detecting and discriminating, and a notching step of notching the electrode in the notching unit 130 .
- the secondary battery manufacturing method according to an embodiment of the present invention may further include a winding step of winding the notched electrode 10 on the electrode winding unit 140 .
- the electrode 10 in the electrode supply step, the electrode 10 may be supplied through the electrode supply unit 110 .
- the electrode supply unit 110 includes an electrode supply roll 111 on which the electrode 10 is wound, and unwinds the electrode 10 wound on the electrode supply roll 111 in the electrode supply step, and then proceeds to the electrode in a subsequent process. (10) can be supplied.
- the electrode 10 may be wound on the electrode supply roll 111 in various forms such as a sheet or a film.
- the supply speed of the electrode 10 may be adjusted according to the notching speed performed in the notching step.
- the electrode supply unit 110 includes rollers R for supplying the electrode 10 , but the rotation speed of the rollers R may be adjusted to adjust the supply speed of the electrode 10 .
- the first inspection unit V1 detects and determines the normal electrode portion and the abnormal electrode portion from the supplied electrode 10 .
- the first inspection unit V1 may divide the normal electrode part and the abnormal electrode part through the vision sensor, and transmit the notch signal to the notching part 130 through the main control system 120 .
- the main control system 120 may transmit the notch type signal together when transmitting the notch signal to the notch unit 130 .
- the secondary battery manufacturing method according to an embodiment of the present invention may further include a control step of controlling the notch 130 in the main control system 120 to adjust the notch shape of the electrode 10 .
- the first inspection unit V1 senses the bad electrode display tag NG Tag T attached to the defective part of the electrode 10 to detect the normal electrode part and the abnormal electrode part. can be detected.
- the second inspection unit V2 may detect the shape of the electrode 10 to detect the normal electrode portion and the abnormal electrode portion. In this case, the normal electrode part and the abnormal electrode part can be detected by detecting the width dimension, the distortion, the active material application state, etc. of the electrode 10 .
- the electrode 10 that has undergone the first inspection step may be notched in the notched portion 130 .
- the notching may be performed by irradiating the laser beam B to the electrode 10 through the laser 131 so that the normal electrode portion and the abnormal electrode portion detected in the first inspection step are distinguished.
- the notching unit 130 may notch the normal electrode portion and the abnormal electrode portion determined by the first inspection unit V1 based on the received notching signal in different shapes.
- the normal electrode part is notched to form the electrode tab 11, and the abnormal electrode part is marked, a hole is formed, or the electrode tab 11' is cut in at least one form. can be punctuated.
- the notched part 130 irradiates the laser light B to the side end of the abnormal electrode part from the electrode 10 through the laser 131, so that the shape of the electrode tab 11 of the normal electrode part is different. It can be notched to appear.
- the notch shape of the abnormal electrode portion is more specifically, a shape in which the electrode tab 11 ′ in which a short rectangle is formed in the portion where the electrode tab 11 ′ is formed is cut, or the shape of the portion where the electrode tab 11 ′′ is formed.
- the corners may be chamfered, a marking shape in which a pattern is formed, or a hole in a circular or polygonal shape may be formed.
- the notched electrode 10 may be wound around the electrode winding unit 140 .
- the electrode winding unit 140 may include the electrode winding roll 141 on which the electrode 10 is wound, and may wind the electrode 10 moved in the winding step on the electrode winding roll 141 .
- a normal electrode portion and an abnormal electrode portion are discriminated from the electrode 10 supplied through the first inspection unit V1. After that, the normal electrode portion and the abnormal electrode portion of the electrode 10 are notched in different shapes through the laser 131 so that continuous operation is possible without floating equipment, so that manufacturing productivity can be improved.
- FIG. 3 is a front view exemplarily showing an apparatus for manufacturing a secondary battery according to another embodiment of the present invention
- FIG. 4 is a perspective view showing a first inspection step and a notching step in a secondary battery manufacturing method according to another embodiment of the present invention
- FIG. 5 is a perspective view illustrating a second inspection step, a cell cutting step, and a discharging step in a method for manufacturing a secondary battery according to another embodiment of the present invention.
- the electrode supply step of supplying the electrode 10, the normal electrode portion and the abnormal electrode portion in the electrode 10 are first inspected ( V1) includes a first inspection step of detecting and discriminating, and a notching step of notching the electrode 10 in the notching unit 130 .
- the second inspection unit V2 detects the electrode portion notched as the abnormal electrode portion
- the method may further include a second inspection step of performing a second inspection step, a cell cutting step of cutting the plurality of cells 30 , and a discharging step of discharging the defective cells 30 ′ including the abnormal electrode portion.
- the secondary battery manufacturing method according to another embodiment of the present invention further includes a lamination step, a second inspection step, a cell cutting step, and a discharging step, when compared to the secondary battery manufacturing method according to an embodiment of the present invention described above. There is a difference. Accordingly, in another embodiment of the present secondary battery manufacturing method, content overlapping with the one embodiment of the secondary battery manufacturing method described above will be omitted or briefly described, and the differences will be mainly described.
- the electrode 10 may be supplied through the electrode supply unit 110 .
- the supply speed of the electrode 10 may be adjusted according to the notching speed performed in the notching step.
- the electrode supply unit 110 includes rollers R for supplying the electrode 10 , but the rotation speed of the rollers R may be adjusted to adjust the supply speed of the electrode 10 .
- the first inspection unit V1 detects and determines the normal electrode portion and the abnormal electrode portion from the supplied electrode 10 .
- the first inspection unit V1 may classify the normal electrode portion and the abnormal electrode portion through the vision sensor, and transmit a notch signal to the notching unit 130 through the main control system 220 .
- the electrode 10 that has undergone the first inspection step may be notched in the notched portion 130 .
- the laser 131 may be used to notch the normal electrode portion and the abnormal electrode portion detected in the first inspection step.
- the notching unit 130 may notch the normal electrode portion and the abnormal electrode portion determined by the first inspection unit V1 based on the received notching signal in different shapes.
- the normal electrode part is notched to form the electrode tab 11, and the abnormal electrode part is marked, a hole is formed, or the electrode tab 11' is cut in at least one form. can be punctuated.
- the notched part 130 irradiates the laser light B to the side end of the abnormal electrode part from the electrode 10 through the laser 131, so that the shape of the electrode tab 11 of the normal electrode part is different. It can be notched to appear.
- the notch shape of the abnormal electrode portion is more specifically, a shape in which the electrode tab 11 ′ in which a short rectangle is formed in the portion where the electrode tab 11 ′ is formed is cut, or the shape of the portion where the electrode tab 11 ′′ is formed.
- the corners may be chamfered, or a marking type in which a pattern is formed, or a hole in a circular or polygonal shape may be formed.
- the electrode 10 and the separator 20 may be alternately stacked for lamination.
- the laminated body S of the electrode 10 and the separator 20 notched through the lamination part 260 may be bonded to each other by applying heat and pressurizing it.
- the separation membrane 20 may be supplied to the lamination unit 260 by unwinding the separation membrane 20 wound on the separation membrane supply roll 250 .
- the second inspection unit V2 may detect an electrode portion notched as an abnormal electrode portion after the lamination step.
- the second inspection step detects the abnormal electrode part by detecting the cut electrode tab 11', marking, or hole of the electrode part notched as the abnormal electrode part through the second inspection part V2 including the vision sensor.
- the detection signal may be transmitted to the discharge unit 280 .
- the stacked body S of the laminated electrode 10 and the separator 20 may be cut into a plurality of cells 30 .
- the stack S of the electrode 10 and the separator 20 positioned between the pair of cutters may be cut through the cell cutting unit 270 including the pair of cutters.
- the cut cells 30 may be transferred to a subsequent process through the conveyor belts C1 and C2.
- the discharging unit 280 may discharge the defective cells 30 ′ including the abnormal electrode portions detected through the second inspection step in the plurality of cells 30 .
- the defective cell 30 ′ may be gripped through the discharge unit 280 including a jig including the abnormal electrode portion to be separated from the cells 30 including the normal electrode portion. .
- the normal electrode part and the abnormal electrode part of the electrode 10 are notched in different shapes through a laser 131, and then the abnormal electrode part is used in the inspection step. It is possible to detect the bad cell 30' containing the notched abnormal electrode part and discharge the bad cell 30' containing the abnormal electrode part in the discharging step, so that continuous operation is possible without floating the equipment. Productivity can be significantly improved.
- the electrode supply unit 110 for supplying the electrode 10, and the normal electrode portion and the abnormality in the supplied electrode 10 .
- the first inspection unit V1 for detecting and discriminating the electrode portion
- the notching unit 130 for notching the electrode 10 that has passed through the first inspection unit V1
- the notching unit receiving a notch signal from the first inspection unit V1 and a main control system (120) that passes to (130).
- the apparatus 100 for manufacturing a secondary battery according to an embodiment of the present invention may further include an electrode winding unit 140 for winding the electrode 10 .
- the apparatus 100 for manufacturing a secondary battery according to an embodiment of the present invention relates to an apparatus for manufacturing a secondary battery applied to the method for manufacturing a secondary battery according to an embodiment and another embodiment of the present invention described above.
- an embodiment of the present secondary battery manufacturing apparatus 100 will omit or briefly describe the content overlapping with the secondary battery manufacturing method according to the above-described embodiment and other embodiments of the present invention, and focus on the differences to do it
- the electrode supply unit 110 may supply the electrode 10 .
- the electrode supply unit 110 includes an electrode supply roll 111 on which the electrode 10 is wound, and unwinds the electrode 10 wound on the electrode supply roll 111 , and then the electrode 10 as a subsequent process. can supply
- the electrode supply unit 110 may adjust the supply rate of the electrode 10 according to the notch rate performed by the notch unit 130 .
- the electrode supply unit 110 includes rollers R for supplying the electrode 10 , and the rotation speed of the rollers R may be adjusted to adjust the supply speed of the electrode 10 .
- the first inspection unit V1 may detect and determine a normal electrode portion and an abnormal electrode portion from the supplied electrode 10 .
- the first inspection unit V1 may transmit a notch signal by dividing the normal electrode portion and the abnormal electrode portion through a vision sensor.
- the first inspection unit V1 may detect, for example, a normal electrode part and an abnormal electrode part by sensing a bad electrode display tag NG Tag T attached to the bad part of the electrode 10 .
- the second inspection unit V2 may detect a normal electrode portion and an abnormal electrode portion by detecting the shape of the electrode 10 .
- the normal electrode part and the abnormal electrode part can be detected by detecting the width dimension, the distortion, the active material application state, etc. of the electrode 10 .
- the main control system 120 may receive the notch signal from the first inspection unit V1 and transmit it to the notch unit 130 . In this case, the main control system 120 may transmit the notch type signal together when the notch signal is transmitted to the notch unit 130 . That is, the notched shape of the electrode 10 may be adjusted by controlling the notching unit 130 in the main control system 120 .
- the notched part 130 may notch the electrode 10 that has passed through the first inspection part V1 .
- the notched part 130 may be notched by the laser 131 so that the normal electrode part and the abnormal electrode part detected by the first inspection part V1 are distinguished.
- the notching unit 130 may notch the normal electrode portion and the abnormal electrode portion determined by the first inspection unit V1 based on the received notching signal in different shapes.
- the notched portion 130 may form the electrode tab 11 by notching the normal electrode portion.
- the notched part 130 may irradiate the laser beam B to the side end of the normal electrode part through the laser 131 to form the rectangular electrode tab 11 .
- the notch 130 may notch the abnormal electrode portion in at least one form of marking, forming a hole, or cutting the electrode tab 11 ′.
- the notched part 130 irradiates the laser beam B to the side end of the abnormal electrode part in the electrode 10 through the laser 131, so that the shape of the electrode tab 11 of the normal electrode part is different from the shape of the furnace.
- the notch shape of the abnormal electrode portion is more specifically, a shape in which the electrode tab 11 ′ in which a short rectangle is formed in the portion where the electrode tab 11 ′ is formed is cut, or the shape of the portion where the electrode tab 11 ′′ is formed.
- the corners may be chamfered, a marking shape in which a pattern is formed, or a hole in a circular or polygonal shape.
- the electrode winding unit 140 may wind the notched electrode 10 that has passed through the notched unit 130 .
- the electrode winding unit 140 may include an electrode winding roll 141 on which the electrode 10 is wound, and may wind the moving electrode 10 on the electrode winding roll 141 .
- the electrode supply unit 110 for supplying the electrode 10 , the normal electrode portion and the abnormality in the supplied electrode 10 .
- a cell cutting unit 270 for cutting the stack (S) of the electrode 10 and the separator 20 into a plurality of cells 30, and a discharge unit for discharging the defective cells 30 ′ including the abnormal electrode portion (280).
- the secondary battery manufacturing apparatus 200 has a lamination part 260 , a second inspection part V2 , and a cell cutting part compared with the secondary battery manufacturing apparatus according to an embodiment of the present invention described above. 270 , and there is a difference further comprising a discharge unit 280 .
- the content overlapping with the secondary battery manufacturing apparatus according to the embodiment of the present invention will be omitted or briefly described, and the differences will be mainly described. .
- the electrode supply unit 110 may supply the electrode 10 .
- the electrode supply unit 110 includes an electrode supply roll 111 on which the electrode 10 is wound, and unwinds the electrode 10 wound on the electrode supply roll 111 , and then the electrode 10 as a subsequent process. can supply
- the electrode supply unit 110 may adjust the supply rate of the electrode 10 according to the notch rate performed by the notch unit 130 .
- the electrode supply unit 110 includes rollers R for supplying the electrode 10 , and the rotation speed of the rollers R may be adjusted to adjust the supply speed of the electrode 10 .
- the first inspection unit V1 may detect and determine a normal electrode portion and an abnormal electrode portion from the supplied electrode 10 .
- the first inspection unit V1 may transmit a notch signal by dividing the normal electrode portion and the abnormal electrode portion through the vision sensor.
- the main control system 220 may receive the notch signal and transmit it to the notch unit 130 . In this case, the main control system 220 may transmit the notch type signal together when the notch signal is transmitted to the notch unit 130 .
- the notched part 130 may notch the electrode 10 that has passed through the first inspection part V1 .
- the notched part 130 may be notched by the laser 131 so that the normal electrode part and the abnormal electrode part detected by the first inspection part V1 are distinguished.
- the notching unit 130 may notch the normal electrode portion and the abnormal electrode portion determined by the first inspection unit V1 in different shapes based on the received notching signal.
- the notched portion 130 may have at least one form of notching the normal electrode portion to form the electrode tab 11 , marking the abnormal electrode portion, forming a hole, or cutting the electrode tab 11 ′. can be marked with
- the lamination unit 260 may be laminated by alternately stacking the notched electrode 10 and the separator 20 .
- the lamination unit 260 may be bonded to each other by applying heat and pressing the laminate S of the notched electrode 10 and the separator 20 .
- the separation membrane 20 wound on the separation membrane supply roll 250 is unwound, and the separation membrane 20 may be supplied to the lamination unit 260 .
- the second inspection unit V2 may detect an electrode portion notched as an abnormal electrode portion after passing through the lamination portion 260 .
- the second inspection unit V2 detects the abnormal electrode portion by detecting the cut electrode tab 11 ′, marking, or hole of the electrode portion notched as the abnormal electrode portion through the vision sensor, and is discharged to the discharge unit 280 .
- a detection signal can be transmitted.
- the cell cutting unit 270 may cut the stacked body S of the laminated electrode 10 and the separator 20 into a plurality of cells 30 after passing through the second inspection unit V2 .
- the cell cutting unit 270 includes a pair of cutters, and moves the pair of cutters up and down, and the stacked body S of the electrode 10 and the separator 20 positioned between the pair of cutters. can be cut
- the cut cells 30 may be transferred to a subsequent process through the conveyor belts C1 and C2.
- the discharge unit 280 may discharge the defective cells 30 ′ including the abnormal electrode portions detected through the second inspection unit V2 in the plurality of cells 30 after passing through the cell cutting unit 270 .
- the discharge unit 280 may hold the defective cell 30 ′ including the abnormal electrode portion through a jig to separate it from the cells 30 including the normal electrode portion.
- V1 first inspection unit
- V2 second inspection unit
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Abstract
Description
Claims (16)
- 전극 공급부를 통해 전극을 공급하는 전극 공급단계;공급되는 상기 전극에서 정상 전극부분과 비정상 전극부분을 제1 검사부가 검출하여 판별하는 제1 검사단계; 및상기 제1 검사단계를 거친 상기 전극을 노칭부에서 노칭하는 노칭단계를 포함하고,상기 노칭단계는 상기 제1 검사단계에서 검출된 상기 정상 전극부분과 상기 비정상 전극부분이 구분되도록 레이저를 통해 노칭하는 이차전지 제조방법.
- 청구항 1에 있어서,상기 제1 검사단계에서 제1 검사부는 비젼센서를 통해 상기 정상 전극부분과 상기 비정상 전극부분을 구분하여, 메인 컨트롤시스템을 통해 상기 노칭부로 노칭신호를 전송하는 이차전지 제조방법.
- 청구항 2에 있어서,상기 노칭단계에서 상기 노칭부는 전송받은 상기 노칭신호를 기준으로 상기 제1 검사부에서 판별한 상기 정상 전극부분 및 상기 비정상 전극부분을 서로 다른 형상으로 노칭하는 이차전지 제조방법.
- 청구항 3에 있어서,상기 노칭단계에서상기 정상 전극부분을 노칭하여 전극 탭을 형성시키고,상기 비정상 전극부분은 마킹되거나, 홀이 형성되거나, 또는 전극 탭이 절단된 것 중에서 적어도 어느 하나의 형태로 노칭하는 이차전지 제조방법.
- 청구항 1에 있어서,상기 전극 공급단계는상기 노칭단계에서 수행되는 노칭 속도에 따라 상기 전극의 공급 속도를 조절하는 이차전지 제조방법.
- 청구항 5에 있어서,상기 전극 공급단계에서 상기 전극 공급부는 상기 전극을 공급하는 롤러들을 포함하되,상기 롤러들의 회전속도를 조절하여 상기 전극의 공급 속도를 조절하는 이차전지 제조방법.
- 청구항 1에 있어서,상기 노칭단계를 거친 상기 전극을 전극 권취부에 권취하는 권취 단계를 더 포함하는 이차전지 제조방법.
- 청구항 1에 있어서,상기 노칭단계 이후,상기 전극과 분리막의 교대로 적층시켜 라미네이션하는 라미네이션 단계;상기 라미네이션 단계 후 상기 비정상 전극부분으로 노칭된 전극부분을 제2 검사부가 검출하는 제2 검사단계;상기 제2 검사단계 후 라미네이션된 상기 전극 및 상기 분리막의 적층체를 다수개의 셀로 커팅하는 셀 커팅단계; 및상기 커팅단계 후 배출부가 다수개의 상기 셀에서 상기 제2 검사단계를 통해 검출한 상기 비정상 전극부분이 포함된 불량셀을 배출시키는 배출단계를 더 포함하는 이차전지 제조방법.
- 전극을 공급하는 전극 공급부;공급되는 상기 전극에서 정상 전극부분과 비정상 전극부분을 검출하여 판별하는 제1 검사부; 및상기 제1 검사부를 거친 상기 전극을 노칭하는 노칭부를 포함하고,상기 노칭부는 상기 제1 검사부에서 검출된 상기 정상 전극부분과 상기 비정상 전극부분이 구분되도록 레이저를 통해 노칭하는 이차전지 제조장치.
- 청구항 9에 있어서,상기 제1 검사부는 비젼센서를 통해 상기 정상 전극부분과 상기 비정상 전극부분을 구분하여 노칭신호를 전송하고,상기 노칭신호를 전송받아 상기 노칭부로 전달하는 메인 컨트롤시스템을 더 포함하는 이차전지 제조장치.
- 청구항 10에 있어서,상기 노칭부는 전송받은 상기 노칭신호를 기준으로 상기 제1 검사부에서 판별한 상기 정상 전극부분 및 상기 비정상 전극부분을 서로 다른 형상으로 노칭하는 이차전지 제조장치.
- 청구항 11에 있어서,상기 노칭부는상기 정상 전극부분을 노칭하여 전극 탭을 형성시키고,상기 비정상 전극부분을 마킹되거나, 홀이 형성되거나, 또는 전극 탭이 절단된 것 중에서 적어도 어느 하나의 형태로 노칭하는 이차전지 제조장치.
- 청구항 9에 있어서,상기 전극 공급부는상기 노칭부에서 수행하는 노칭 속도에 따라 상기 전극의 공급 속도를 조절하는 이차전지 제조장치.
- 청구항 13에 있어서,상기 전극 공급부는 상기 전극을 공급하는 롤러들을 포함하되,상기 롤러들의 회전속도를 조절하여 상기 전극의 공급 속도를 조절하는 이차전지 제조장치.
- 청구항 9에 있어서,상기 노칭부를 거친 상기 전극을 권취하는 전극 권취부를 더 포함하는 이차전지 제조장치.
- 청구항 9에 있어서,상기 노칭된 전극과 분리막의 교대로 적층시켜 라미네이션하는 라미네이션부;상기 라미네이션부를 거친 후 상기 비정상 전극부분으로 노칭된 전극부분을 검출하는 제2 검사부;상기 제2 검사부를 거친 후 라미네이션된 상기 전극 및 상기 분리막의 적층체를 다수개의 셀로 커팅하는 셀 커팅부; 및상기 커팅부를 거친 후 다수개의 상기 셀에서 상기 제2 검사부를 통해 검출한 상기 비정상 전극부분이 포함된 불량셀을 배출시키는 배출부를 더 포함하는 이차전지 제조장치.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21813591.1A EP4120384B1 (en) | 2020-05-29 | 2021-05-24 | Method for manufacturing secondary battery and apparatus for manufacturing secondary battery |
| US17/917,405 US20230155101A1 (en) | 2020-05-29 | 2021-05-24 | Method for Manufacturing Secondary Battery and Apparatus for Manufacturing Secondary Battery |
| ES21813591T ES3037408T3 (en) | 2020-05-29 | 2021-05-24 | Method for manufacturing secondary battery and apparatus for manufacturing secondary battery |
| CN202180027345.4A CN115485874B (zh) | 2020-05-29 | 2021-05-24 | 用于制造二次电池的方法及用于制造二次电池的设备 |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020200065215A KR102808443B1 (ko) | 2020-05-29 | 2020-05-29 | 이차전지 제조방법 및 이차전지 제조장치 |
| KR10-2020-0065215 | 2020-05-29 |
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| WO2021241960A1 true WO2021241960A1 (ko) | 2021-12-02 |
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| PCT/KR2021/006416 Ceased WO2021241960A1 (ko) | 2020-05-29 | 2021-05-24 | 이차전지 제조방법 및 이차전지 제조장치 |
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| US (1) | US20230155101A1 (ko) |
| EP (1) | EP4120384B1 (ko) |
| KR (1) | KR102808443B1 (ko) |
| CN (1) | CN115485874B (ko) |
| ES (1) | ES3037408T3 (ko) |
| HU (1) | HUE072737T2 (ko) |
| WO (1) | WO2021241960A1 (ko) |
Cited By (1)
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| EP4340054A1 (en) * | 2022-09-15 | 2024-03-20 | LG Energy Solution, Ltd. | Apparatus and method for making up roll map, roll map, and system and method for manufacturing battery using roll map |
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| KR102853957B1 (ko) * | 2021-12-20 | 2025-09-03 | 주식회사 엘지에너지솔루션 | 외관 검사 시스템 및 방법 |
| KR20230112517A (ko) | 2022-01-20 | 2023-07-27 | 전태호 | 코드 마킹 및 인식 장치와 이차 전지 셀 통합 관리 시스템 |
| KR20230149983A (ko) * | 2022-04-21 | 2023-10-30 | 주식회사 엘지에너지솔루션 | 라미네이션 장치 및 단위 셀 제조 방법 |
| KR20240030290A (ko) | 2022-08-30 | 2024-03-07 | 주식회사 엘지에너지솔루션 | 마킹 생성 장치 |
| WO2024049133A1 (ko) * | 2022-08-31 | 2024-03-07 | 주식회사 엘지에너지솔루션 | 전극 기재의 절단 장치 |
| KR20240165650A (ko) * | 2023-05-16 | 2024-11-25 | 주식회사 엘지에너지솔루션 | 전극 제조 장치 및 전극 제조 방법 |
| DE102023206014A1 (de) * | 2023-06-27 | 2025-01-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zur Überwachung und Kalibrierung von Komponenten in der Fertigung von Batteriezellen |
| KR20250022362A (ko) * | 2023-08-08 | 2025-02-17 | 주식회사 엘지에너지솔루션 | 이차 전지 제조 장치 및 이를 이용한 이차 전지를 제조하는 방법 |
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| EP4583194A3 (en) * | 2022-09-15 | 2025-12-31 | LG Energy Solution, Ltd. | APPARATUS AND METHOD FOR CREATING A ROLL MAP, ROLL MAP AND SYSTEM AND METHOD FOR MANUFACTURED BATTERIES USING ROLL MAPS |
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| US12586829B2 (en) | 2022-09-15 | 2026-03-24 | Lg Energy Solution, Ltd. | Systems and methods for generating roll map and manufacturing battery using roll map |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115485874A (zh) | 2022-12-16 |
| KR20210147658A (ko) | 2021-12-07 |
| US20230155101A1 (en) | 2023-05-18 |
| EP4120384B1 (en) | 2025-07-02 |
| ES3037408T3 (en) | 2025-10-01 |
| EP4120384A4 (en) | 2024-05-22 |
| CN115485874B (zh) | 2025-07-11 |
| KR102808443B1 (ko) | 2025-05-16 |
| EP4120384A1 (en) | 2023-01-18 |
| HUE072737T2 (hu) | 2025-12-28 |
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