WO2023106641A1 - 파우치 성형설비 및 성형방법 - Google Patents
파우치 성형설비 및 성형방법 Download PDFInfo
- Publication number
- WO2023106641A1 WO2023106641A1 PCT/KR2022/017130 KR2022017130W WO2023106641A1 WO 2023106641 A1 WO2023106641 A1 WO 2023106641A1 KR 2022017130 W KR2022017130 W KR 2022017130W WO 2023106641 A1 WO2023106641 A1 WO 2023106641A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pouch
- pouch film
- distance
- value
- distance measuring
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 64
- 238000007689 inspection Methods 0.000 claims abstract description 55
- 238000005259 measurement Methods 0.000 claims abstract description 49
- 230000004308 accommodation Effects 0.000 claims abstract description 19
- 230000002950 deficient Effects 0.000 claims abstract description 17
- 230000007547 defect Effects 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims description 46
- 238000005520 cutting process Methods 0.000 claims description 36
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 2
- 230000032258 transport Effects 0.000 abstract 3
- 238000007789 sealing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
-
- 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
- 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
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/34—Feeding the material to the mould or the compression means
- B29C2043/3405—Feeding the material to the mould or the compression means using carrying means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
- B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5825—Measuring, controlling or regulating dimensions or shape, e.g. size, thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/585—Measuring, controlling or regulating detecting defects, e.g. foreign matter between the moulds, inaccurate position, breakage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0027—Cutting off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3468—Batteries, accumulators or fuel cells
-
- 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 pouch molding equipment and molding method capable of forming an accommodating part for accommodating an electrode assembly in a pouch film, and accurately measuring and inspecting the depth of the accommodating part molded in the pouch film.
- a secondary battery refers to a battery that can be charged and discharged, unlike a primary battery that cannot be charged.
- Such secondary batteries are widely used in the field of high-tech electronic devices such as phones, notebook computers and camcorders.
- the secondary battery may be variously classified according to the structure of the electrode assembly.
- secondary batteries may be classified into a stack type structure, a winding type (jelly roll type) structure, and a stack/folding type structure.
- the secondary battery includes an electrode assembly and a pouch accommodating the electrode assembly, and the electrode assembly has a structure in which electrodes and separators are alternately stacked.
- the method of manufacturing the pouch includes a supply process of continuously supplying a pouch film, a molding process of continuously forming an accommodating part for accommodating an electrode assembly in the supplied pouch film, and a process between the accommodating part formed in the pouch film and the accommodating part. It includes a cutting process of manufacturing a finished product pouch by cutting.
- the method of manufacturing the pouch further includes an inspection process of measuring the depth of the receiving portion molded in the pouch film and inspecting whether or not it is defective when the cutting process is completed. The depth of the receiving part molded in the pouch film is being inspected.
- the inspection process has a problem in that it takes a lot of work time. In particular, it is difficult to obtain accurate inspection results due to measurement errors for each operator, and since the inspection must be performed after the molding process is completed, there is a problem in that the continuity of work is poor.
- the pouch molding equipment and molding method of the present invention for solving the above problems includes an inspection step of inspecting the depth of a receiving portion molded in a pouch film between a pouch film forming process and a pouch film cutting process, the inspection process comprising:
- the inspection process comprising:
- Pouch molding equipment of the present invention for achieving the above object includes a conveying device for conveying a pouch film; a molding device that presses an upper surface of the pouch film transported by the transport device to form an accommodation portion for accommodating the electrode assembly; and an inspection device that calculates a depth value of the receiving portion formed in the pouch film and compares the calculated depth value with a set input value to inspect whether or not there is a defect.
- a distance measuring member for measuring a first measurement value, which is a distance from the reference point to the pouch film connected to the upper end of the accommodating part, and a second measurement value, which is a distance from the reference point to the bottom surface of the accommodating part, respectively; and subtracting the first measurement value from the second measurement value measured by the distance measuring member to calculate the depth value of the accommodating part, and if the calculated depth value is within the set input value, it is determined to be normal, and if it is outside the set value, it is determined to be defective.
- An inspection member for discriminating may be included.
- the distance measuring member may be provided as a displacement sensor.
- the distance measuring member may measure a distance from a reference point to the pouch film connected to the upper end of the accommodating unit a plurality of times within a set range, and calculate a first measurement value as an average of the measured distance values.
- the distance measuring member may measure a distance from a reference point to a bottom surface of the receiving part a plurality of times within a set range, and calculate a second measurement value as an average of the measured distance values.
- the setting range may be set to 1 mm to 5 mm.
- the inspection device may further include a full width adjusting member for adjusting a position by moving the distance measuring member in a full width direction of the pouch film orthogonal to a conveying direction of the pouch film.
- the inspection device may further include a height adjusting member for adjusting a height of the distance measuring member based on the pouch film by moving the full width adjusting member toward the pouch film.
- the pouch molding method of the present invention includes a transfer step of transferring the pouch film; A molding step of pressurizing the upper surface of the transferred pouch film to form an accommodation part for accommodating the electrode assembly; and an inspection step of calculating a depth value of the receiving portion formed in the pouch film and comparing the calculated depth value with a set input value to inspect whether or not there is a defect, wherein the inspection step includes a distance measuring member provided on the upper part of the pouch film.
- the distance measuring member may be provided as a displacement sensor.
- the distance from the reference point to the pouch film connected to the upper end of the accommodating unit is measured multiple times within a set range using a distance measuring member, and a first measurement value can be calculated as an average of the measured distance values. .
- the distance from the reference point to the bottom surface of the accommodating unit may be measured multiple times within a set range using the distance measuring member, and a second measurement value may be calculated as an average of the measured distance values.
- the setting range may be set to 1 mm to 5 mm.
- the measuring process may further include a process of adjusting the position of the distance measuring member by moving it in the full width direction of the pouch film perpendicular to the conveying direction of the pouch film.
- the measuring process may further include a process of adjusting a height of the distance measuring member based on the pouch film by moving the distance measuring member toward the pouch film.
- a cutting step of manufacturing a pouch by cutting between accommodating portions of the pouch film and a removal step of discharging and removing the pouch having an accommodation portion determined to be defective in the inspection step among the pouches.
- the molding equipment of the present invention can accurately measure and inspect the depth of the receiving part molded in the pouch film, thereby significantly reducing working time and increasing work continuity.
- the molding equipment of the present invention can inspect all the housing parts molded in the pouch film, so accurate inspection results can be obtained.
- FIG. 1 is a perspective view showing a pouch according to the present invention.
- Figure 2 is a process diagram schematically showing a pouch molding equipment according to the present invention.
- Figure 3 is a perspective view showing a slit cutting device of the pouch molding equipment according to the present invention.
- Figure 4 is a perspective view showing a molding apparatus of a pouch molding equipment according to the present invention.
- Figure 5 is a perspective view showing a distance measuring member of the pouch molding equipment according to the present invention.
- FIG. 6 is a view showing a distance measuring state of a distance measuring member
- Figure 7 is a side view showing the full width adjusting member of the pouch molding equipment according to the present invention.
- Figure 8 is a side view showing a height adjusting member of the pouch molding equipment according to the present invention.
- Figure 9 is a perspective view showing the main cutting device of the pouch molding equipment according to the present invention.
- FIG. 10 is a flow chart showing a pouch molding method according to the present invention.
- the pouch 10 of the present invention is for accommodating an electrode assembly (not shown). That is, the pouch 10 includes an accommodating portion 11 accommodating the electrode assembly and a sealing portion 12 sealing the accommodating portion 11 .
- the pouch 10 may be manufactured by molding the pouch film 20 . That is, when the receiving part 11 provided with a pair of accommodating grooves for accommodating the electrode assembly is molded on the upper surface of the pouch film 20, and the pouch film 20 is folded in half so that the pair of accommodating grooves correspond to each other, A pouch 10 capable of accommodating the electrode assembly may be manufactured.
- the pouch 10 having such a structure can be manufactured through the pouch molding equipment according to the present invention.
- the pouch molding equipment according to the present invention has the receiving portion 11 formed in the pouch film 20 in the process of manufacturing the pouch. ) can be accurately inspected for defects. Accordingly, the working time can be greatly shortened, the continuity of the work can be increased, and all of the receiving parts 11 formed in the pouch film 20 can be inspected, so that accurate inspection results can be obtained.
- the pouch molding equipment according to the present invention as shown in FIG. ) and a removal device 600.
- the transfer device 100 passes the pouch film 20 in the form of a long sheet through the slit cutting device 200, the forming device 300, and the inspection device 400 to the main cutting device 500. ) to be transported. That is, the conveying device 100 may be provided as a conveyor belt on which the pouch film 20 is disposed on the upper surface and conveying the pouch film 20 to the slit cutting device 200 .
- the slit cutting device 200 is used to partially cut between the accommodation portion to be formed in the pouch and the accommodation portion to increase efficiency and cutting performance when cutting the pouch film. That is, the slit cutting device 200 includes a rotating blade 210 that cuts a portion of the pouch film 20 in the entire width direction as seen in FIG. 4 .
- the forming apparatus 300 presses the upper surface of the transferred pouch film 20 to form an accommodating portion for accommodating the electrode assembly. That is, the forming apparatus 300 is provided on the die 310 on which the pouch film 20 is disposed, and the upper surface of the die 310 and presses the upper surface of the pouch film 20 to form the electrode assembly accommodating portion 11. A punch 320 is included.
- the depth of the accommodating portion 11 may change due to restoring force, and the accommodating portion formed in the pouch film 20 ( 11) may need to be checked to see if the change in depth has occurred.
- the inspection device 400 is used.
- the inspection device 400 inspects the depth of the receiving portion 11 formed in the pouch film 20 to determine whether or not it is defective. That is, the inspection device 400 calculates the depth value of the accommodating part 11 formed in the pouch film 20, compares the calculated depth value with the set input value, and inspects whether or not there is a defect.
- the inspection device 400 includes a distance measuring member 410 and an inspection member 420 .
- the distance measuring member 410 is provided at a reference point (O) set on the upper part of the pouch film 20, and is a distance from the reference point to the pouch film 20 connected to the upper end of the receiving part 11.
- a first measurement value ⁇ and a second measurement value ⁇ that is the distance from the reference point O to the bottom surface of the accommodating part 11 are respectively measured.
- the inspection member 420 calculates the depth value ⁇ of the accommodating part 11 by subtracting the first measurement value ⁇ from the second measurement value ⁇ measured by the distance measuring member 410, , If the calculated depth value is located within the set input value range, it is determined as normal, and if it is located outside the range, it is determined as defective.
- the depth value ⁇ of the accommodating part 11 and the set input value may vary depending on the size and thickness of the electrode assembly to be accommodated in the pouch film 20 .
- the distance measuring member 410 may be provided as a displacement sensor, and the first measurement value ⁇ and the second measurement value ⁇ can be accurately measured through the displacement sensor.
- a displacement sensor is a sensor used to measure a linear distance or a linear position moved by an object, and includes a laser displacement sensor.
- the distance measuring member 410 measures a straight line distance from a reference point to the pouch film 20 connected to the upper end of the accommodating part 11, but the set range A partitioned in the pouch film 20 , and calculates a first measurement value as an average of the measured distance values.
- the distance measuring member 410 measures the straight line distance from the reference point to the set range A partitioned in the pouch film 20 four or more times, and measures the remaining distance values excluding the maximum and minimum values among the measured distance values.
- the first measurement value may be calculated as an average.
- the distance measuring member 410 measures the straight line distance from the reference point to the bottom surface of the accommodating part 11, but measures it multiple times within the set range partitioned on the bottom surface of the accommodating part 11, A second measurement value is calculated as an average of the measured distance values.
- the distance measuring member 410 measures the straight line distance from the reference point to the bottom surface of the receiving part 11 of the pouch film 20 four or more times, and averages the remaining distance values excluding the maximum and minimum values among the measured distance values.
- the second measured value can be calculated as
- the setting range (A) can be set to 1mm ⁇ 5mm, preferably set to 2 ⁇ 3mm.
- the setting range (A) is 1 mm or less, the distance value of the same position can be measured, and if the setting range (A) is 5 mm or more, the moving force of the distance measuring member 410 is greatly required, resulting in poor facility performance. there is.
- the inspection device 400 can accurately inspect the depth of the receiving portion 11 formed in the pouch film 20 during the molding process of the pouch film 20 to determine whether or not there is a defect, thereby improving work efficiency and performance. Continuity can be increased.
- the inspection device 400 is directed to the entire width direction of the pouch film 20 perpendicular to the transport direction of the pouch film 20 (as seen in FIG. 5, the pouch film 20)
- a full width adjusting member 430 may be further included to adjust the position of the distance measuring member 410 by moving the distance measuring member 410 in the left and right direction of the distance.
- the full width adjusting member 430 is for adjusting the position of the distance measuring member 410 in the full width direction of the pouch film 20 .
- the full width adjusting member 430 may be provided as a guide rod provided in the full width direction of the pouch film 20 and movably coupled to the distance measuring member 410 . That is, when the distance measuring member 410 is moved in the longitudinal direction of the guide rod, the position of the distance measuring member 410 can be adjusted while moving in the full width direction of the pouch film 20 .
- the inspection device 400 moves the full width adjusting member 430 toward the pouch film 20 and the distance measuring member fixed to the full width adjusting member 430.
- a height adjusting member 440 for adjusting the height of the 410 relative to the pouch film 20 may be further included. That is, the height adjusting member 440 may be provided as a cylinder that lowers the full width adjusting member 430 toward the pouch film 20 . Accordingly, the distance measuring member 410 can be precisely aligned with the set reference point, and as a result, accurate first and second measurement values can be obtained.
- the main cutting device 500 cuts between the accommodating portion 11 of the pouch film 20 passing through the inspection device 400 to manufacture a pouch. .
- the cutting device cuts the pouch film 20 in the full width direction based on the cutting surface cut on the pouch film 20 by the slit cutting device 200, and thus cutting accuracy can be increased.
- the pouch molding equipment according to the present invention is a removal device for removing the pouches having the receiving portion 11 determined to be defective by the inspection device 400 among the pouches cut by the main cutting device 500 on the process line ( 600) may be further included.
- the removal device 600 can adsorb and remove the pouch from the process line when the pouch having the accommodating portion 11 determined to be defective by the inspection device 400 is cut. Accordingly, it is possible to prevent defective pouches from being transferred to a process line for manufacturing a secondary battery.
- the pouch molding equipment according to the present invention can inspect whether or not the accommodation part 11 formed in the pouch film 20 is defective in the process of manufacturing the pouch, thereby shortening the work time and increasing the continuity of the work. can
- the pouch molding method according to the present invention may include a transfer step, a slit cutting step, a molding step, an inspection step, a main cutting step, and a removal step.
- the pouch film 20 in the form of a long sheet is transferred to the forming step by using a conveyor belt, which is the transfer device 100 .
- the slit cutting device 200 is used to partially cut the space between the accommodation part to be formed in the pouch and the accommodation part.
- the molding step the upper surface of the pouch film 20 is pressed by the molding device 300 to form the accommodating part 11 for accommodating the electrode assembly.
- the molding device 300 continuously molds the receiving portion 11 at regular intervals on the upper surface of the pouch film 20 being transported. That is, when the pouch film 20 is placed on the die 310, the molding apparatus 300 presses the upper surface of the pouch film 20 while the punch 320 descends to form the accommodating portion 11 for accommodating the electrode assembly. to mold
- the depth value of the accommodating part 11 formed in the pouch film 20 is calculated, and the calculated depth value is compared with the set input value to inspect whether or not there is a defect. That is, the inspection step includes a measurement process and an inspection process, and at this time, the inspection device 400 provided with the distance measuring member 410 and the inspection member 420 is used.
- the measuring process is a first straight line distance at right angles from a reference point to the pouch film 20 connected to the upper end of the accommodating part 11 using the distance measuring member 410 provided on the upper part of the pouch film 20.
- a distance value and a second distance value which is a straight line distance at right angles from the reference point to the bottom surface of the receiving part 11, are respectively measured.
- the distance from the reference point to the pouch film 20 connected to the upper end of the accommodating part 11 is measured multiple times within a set range (A) using the distance measuring member 410, and the measured distance A first measured value may be calculated as an average of the values.
- the distance from the reference point to the bottom surface of the accommodating part 11 is measured multiple times using the distance measuring member 410 within a set range, and the second measured value is an average of the measured distance values. can be calculated.
- the setting range (A) may be set to 1 mm to 5 mm.
- the measuring process may further include a process of adjusting the position of the distance measuring member 410 by moving it in the full width direction of the pouch film 20 orthogonal to the conveying direction of the pouch film 20 . Accordingly, measurement accuracy may be increased by adjusting the position of the distance measuring member 410 in the entire width direction of the pouch. Also, in the measuring process, the height of the distance measuring member 410 may be adjusted with respect to the pouch film 20 by lowering the distance measuring member 410 toward the pouch film 20 . Accordingly, the height of the distance measuring member 410 may be adjusted to match the reference point.
- the depth value of the accommodating part 11 is calculated by subtracting the first measurement value from the second measurement value measured in the measurement process using the inspection member 420, and the calculated depth value is set within an input value range. If it is located within the range, it is determined to be normal, and if it is located outside the range, it is determined to be defective.
- the distance measuring member 410 may be provided as a displacement sensor, and accordingly, the first and second measurement values may be accurately measured.
- the pouch 10 is manufactured by cutting the pouch film 20 between the accommodating portion 11 that has passed the inspection process and the accommodating portion 11 using the main cutting device 500 . At this time, the pouch film 20 is cut based on the cut portion of the pouch film 20 formed in the slit cutting step.
- the pouch having the accommodation portion 11 determined to be defective among the pouches cut by the main cutting step is adsorbed using the removal device 600 to be removed on the process line. Accordingly, it is possible to prevent defective pouches from being transported to an assembly line for assembling a secondary battery.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Examining Or Testing Airtightness (AREA)
- Making Paper Articles (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
Claims (15)
- 파우치 필름을 이송하는 이송장치;이송장치에 의해 이송된 파우치 필름의 상면을 가압하여 전극조립체를 수용하기 위한 수용부를 성형하는 성형장치; 및상기 파우치 필름에 형성된 수용부의 깊이값을 계산하고, 계산된 깊이값과 설정된 입력값을 대비하여 불량여부를 검사하는 검사장치를 포함하며,상기 검사장치는,상기 파우치 필름의 상부에 설정된 기준점에 마련되고, 상기 기준점에서 상기 수용부의 상단에 연결된 상기 파우치 필름까지의 거리인 제1 측정값과 상기 기준점에서 상기 수용부의 바닥면까지의 거리인 제2 측정값을 각각 측정하는 거리 측정부재; 및상기 거리 측정부재에 의해 측정된 제2 측정값에서 제1 측정값을 빼서 상기 수용부의 깊이값을 계산하고, 계산된 깊이값이 설정된 입력값 내에 위치하면 정상으로 판별하고, 외에 위치하면 불량으로 판별하는 검사부재를 포함하는 파우치 성형설비.
- 청구항 1에 있어서,상기 거리 측정부재는 변위센서로 마련되는 파우치 성형설비.
- 청구항 1에 있어서,상기 거리 측정부재는, 기준점에서 상기 수용부의 상단에 연결된 상기 파우치 필름까지의 거리를 설정 범위 내에서 복수번 측정하고, 측정된 거리값들의 평균으로 제1 측정값을 산출하는 파우치 성형설비.
- 청구항 1에 있어서,상기 거리 측정부재는, 기준점에서 상기 수용부의 바닥면까지의 거리를 설정범위 내에서 복수번 측정하고, 측정된 거리값들의 평균으로 제2 측정값을 산출하는 파우치 성형설비.
- 청구항 3 또는 4에 있어서,상기 설정 범위는 1mm~5mm로 설정되는 파우치 성형설비.
- 청구항 1에 있어서,상기 검사장치는, 상기 파우치 필름의 이송방향과 직교되는 파우치 필름의 전폭방향으로 상기 거리 측정부재를 이동시켜서 위치를 조절하는 전폭 조절부재를 더 포함하는 파우치 성형설비.
- 청구항 6에 있어서,상기 검사장치는, 상기 파우치 필름을 향하게 상기 전폭 조절부재를 이동시켜서 상기 파우치 필름을 기준으로 상기 거리 측정부재의 높이를 조절하는 높이 조절부재를 더 포함하는 파우치 성형설비.
- 파우치 필름을 이송하는 이송단계;이송된 파우치 필름의 상면을 가압하여 전극조립체를 수용하기 위한 수용부를 성형하는 성형단계;상기 파우치 필름에 형성된 수용부의 깊이값을 계산하고, 계산된 깊이값과 설정된 입력값을 대비하여 불량여부를 검사하는 검사단계를 포함하며,상기 검사단계는,상기 파우치 필름의 상부에 마련된 거리 측정부재를 이용하여 기준점에서 상기 수용부의 상단에 연결된 상기 파우치 필름까지의 거리인 제1 측정값과, 기준점에서 상기 수용부의 바닥면까지의 거리인 제2 측정값을 각각 측정하는 측정공정; 및상기 측정공정에서 측정된 제2 측정값에서 제1 측정값을 빼서 상기 수용부의 깊이값을 계산하고, 계산된 깊이값이 설정된 입력값 내에 위치하면 정상으로 판별하고, 외에 위치하면 불량으로 판별하는 검사공정을 포함하는 파우치 성형방법.
- 청구항 8에 있어서,상기 측정공정에서 상기 거리 측정부재는 변위센서로 마련되는 파우치 성형방법.
- 청구항 8에 있어서,상기 측정공정는, 거리 측정부재를 이용하여 기준점에서 상기 수용부의 상단에 연결된 상기 파우치 필름까지의 거리를 설정 범위 내에서 복수번 측정하고, 측정된 거리값들의 평균으로 제1 측정값을 산출하는 파우치 성형방법.
- 청구항 8에 있어서,상기 측정공정는, 상기 거리 측정부재를 이용하여 기준점에서 상기 수용부의 바닥면까지의 거리를 설정범위 내에서 복수번 측정하고, 측정된 거리값들의 평균으로 제2 측정값을 산출하는 파우치 성형방법.
- 청구항 10 또는 청구항 11에 있어서,상기 설정 범위는 1mm~5mm로 설정되는 파우치 성형방법.
- 청구항 8에 있어서,상기 측정공정은, 상기 파우치 필름의 이송방향과 직교되는 파우치 필름의 전폭방향으로 거리 측정부재를 이동시켜서 위치를 조절하는 공정을 더 포함하는 파우치 성형방법.
- 청구항 8에 있어서,상기 측정공정은, 상기 파우치 필름을 향하게 상기 거리 측정부재를 이동시켜서 상기 파우치 필름을 기준으로 상기 거리 측정부재의 높이를 조절하는 공정을 더 포함하는 파우치 성형방법.
- 청구항 8에 있어서,상기 검사단계가 완료되면, 상기 파우치 필름에 형성된 수용부와 수용부 사이를 커팅하여 파우치를 제조하는 커팅단계; 및상기 파우치 중 검사단계에서 불량으로 판별된 수용부가 형성된 파우치를 배출시켜서 제거하는 제거단계를 더 포함하는 파우치 성형방법.
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EP22904475.5A EP4289592A1 (en) | 2021-12-06 | 2022-11-03 | Forming equipment and forming method for pouch |
CN202280019783.0A CN117062703A (zh) | 2021-12-06 | 2022-11-03 | 成型袋的设备和方法 |
JP2023553121A JP2024509137A (ja) | 2021-12-06 | 2022-11-03 | パウチ成形設備および成形方法 |
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Citations (5)
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JP2004268934A (ja) * | 2003-03-05 | 2004-09-30 | Dainippon Printing Co Ltd | スパウト取付装置の検査システム |
JP2009170134A (ja) * | 2008-01-11 | 2009-07-30 | Toyota Motor Corp | 電池の製造方法および製造装置 |
KR101397926B1 (ko) * | 2013-10-02 | 2014-05-27 | (주)지멕스 | 플랙서블 파우치형 이차전지 누설검사 시스템 |
KR20150026172A (ko) * | 2013-09-02 | 2015-03-11 | 주식회사 엘지화학 | 이차전지용 파우치 깊이 측정방법 및 그 장치 |
KR20200059615A (ko) * | 2018-11-21 | 2020-05-29 | (주)이티에스 | 이차전지셀 파우치성형모듈 |
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KR102078863B1 (ko) | 2015-12-23 | 2020-02-19 | 주식회사 엘지화학 | 파우치 케이스 성형 장치 및 파우치 케이스 성형 방법 |
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- 2022-11-03 CN CN202280019783.0A patent/CN117062703A/zh active Pending
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JP2004268934A (ja) * | 2003-03-05 | 2004-09-30 | Dainippon Printing Co Ltd | スパウト取付装置の検査システム |
JP2009170134A (ja) * | 2008-01-11 | 2009-07-30 | Toyota Motor Corp | 電池の製造方法および製造装置 |
KR20150026172A (ko) * | 2013-09-02 | 2015-03-11 | 주식회사 엘지화학 | 이차전지용 파우치 깊이 측정방법 및 그 장치 |
KR101397926B1 (ko) * | 2013-10-02 | 2014-05-27 | (주)지멕스 | 플랙서블 파우치형 이차전지 누설검사 시스템 |
KR20200059615A (ko) * | 2018-11-21 | 2020-05-29 | (주)이티에스 | 이차전지셀 파우치성형모듈 |
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KR20230085013A (ko) | 2023-06-13 |
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