WO2023033446A1 - 단위 셀 제조 장치 및 제조 방법 - Google Patents
단위 셀 제조 장치 및 제조 방법 Download PDFInfo
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- WO2023033446A1 WO2023033446A1 PCT/KR2022/012654 KR2022012654W WO2023033446A1 WO 2023033446 A1 WO2023033446 A1 WO 2023033446A1 KR 2022012654 W KR2022012654 W KR 2022012654W WO 2023033446 A1 WO2023033446 A1 WO 2023033446A1
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 238000012937 correction Methods 0.000 claims abstract description 116
- 238000012546 transfer Methods 0.000 claims abstract description 76
- 238000005520 cutting process Methods 0.000 claims abstract description 68
- 238000005259 measurement Methods 0.000 claims abstract description 49
- 230000005540 biological transmission Effects 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 14
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 11
- 238000003475 lamination Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 5
- 230000002950 deficient Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000014509 gene expression Effects 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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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
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like 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
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
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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
-
- 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 disclosure relates to a unit cell manufacturing apparatus and manufacturing method. More specifically, it relates to a unit cell manufacturing apparatus and manufacturing method in which the position of at least one of a central electrode, an upper separator, a lower separator, an upper electrode, and a lower electrode is corrected.
- Electrodes are classified into coin-type batteries, cylindrical batteries, prismatic batteries, and pouch-type batteries according to the shape of a battery case.
- electrode assemblies built into a battery case are a jelly-roll type in which a separator is interposed between a positive electrode and a negative electrode, a stack type in which a plurality of unit cells are stacked with a separator interposed between a positive electrode and a negative electrode, and a separator between unit cells. It is classified as a stack/folding type wound with a film.
- the unit cell of the stacked electrode assembly includes a central electrode, an upper separator disposed on the upper surface of the central electrode, a lower separator disposed on the lower surface of the central electrode, an upper electrode disposed on the upper separator, and a lower electrode disposed on the lower separator. It can be manufactured by cutting the laminated body to do. At this time, it is necessary to improve the alignment between the central electrode, the upper separator, the lower separator, the upper electrode, and the lower electrode in the unit cell.
- Patent Document 1 Korean Patent Publication No. 10-2021-0058170
- One of the objects of the present disclosure is to provide a unit cell manufacturing apparatus and manufacturing method capable of improving alignment of unit cells.
- Another object of the present disclosure is to provide a unit cell manufacturing apparatus and manufacturing method capable of automatic correction.
- the present invention may correct the position of at least one of the central electrode, the upper electrode, and the lower electrode and/or the cutting position of the laminate cutting unit cutting the upper separator and the lower separator as an exemplary means.
- a center electrode, an upper separator disposed on one surface of the central electrode, a lower separator disposed on the other surface of the center electrode, an upper electrode disposed on the upper separator, and an upper separator disposed on the lower separator a stack transfer unit for transferring a stack including a lower electrode disposed thereon; a center electrode transfer unit supplying the center electrode to the stack transfer unit; an upper electrode transfer unit supplying the upper electrode to the stack transfer unit; a lower electrode transfer unit supplying the lower electrode to the stack transfer unit; a laminate cutting unit for cutting the upper separator and lower separator of the laminate to form unit cells; a vision unit measuring a measurement value including position information of at least one of the center electrode, the upper separator, the lower separator, the upper electrode, and the lower electrode of the unit cell; and calculating a position correction value of at least one of the center electrode, the upper separator, the lower separator, the upper electrode, and the lower electrode based on the measured value measured by the vision unit, and
- another embodiment of the present invention is a center electrode, an upper separator disposed on one surface of the center electrode, a lower separator disposed on the other surface of the center electrode, an upper electrode disposed on the upper separator, and the lower separator forming a laminate including a lower electrode disposed thereon; forming unit cells by cutting the upper separator and lower separator of the laminate; Measuring a measurement value including position information of at least one of a central electrode, an upper separator, a lower separator, an upper electrode, and a lower electrode of a unit cell; Calculating a position correction value of at least one of the center electrode, the upper separator, the lower separator, the upper electrode, and the lower electrode based on the measured value; and based on the calculated position correction value, the position of the center electrode in the step of forming the laminate, the position of the upper electrode in the step of forming the laminate, and the lower electrode in the step of forming the laminate, based on the calculated position correction value. Compensating at least one of the position of the position
- FIG. 1 is a schematic diagram of a unit cell manufacturing apparatus according to an embodiment of the present invention.
- FIG. 2 is a perspective view of a unit cell according to an embodiment of the present invention.
- FIG 3 is a perspective view of a unit cell according to another embodiment of the present invention.
- FIG. 4 is a diagram for explaining measurement values measured by a non-unit in a unit cell according to an embodiment of the present invention.
- FIG. 5 is a diagram for explaining a measurement value measured by a non-unit in a unit cell according to another embodiment of the present invention.
- FIG. 6 is a diagram for explaining a measurement value measured by a non-unit in a unit cell according to another embodiment of the present invention.
- Ppk process capability index
- FIG. 9 is a graph showing a decrease in the number of manual corrections by an operator according to the present invention.
- FIG. 1 is a schematic diagram of a unit cell manufacturing apparatus according to an embodiment of the present invention.
- each of the longitudinal direction (L), the width direction (W), and the thickness direction (T) is based on the transport direction of the electrodes 11, 12, and 13, the laminate 20, and the unit cell 30.
- the transfer direction of each of the electrodes 11, 12, and 13, the laminate 20, and the unit cell 30 is the longitudinal direction (L)
- the direction perpendicular to the longitudinal direction (L) on a plane is the width direction (W).
- the direction perpendicular to the longitudinal direction (L) and the width direction (W) is referred to as the thickness direction (T).
- a plane means a plane formed by the longitudinal direction (L) and the width direction (W) unless otherwise described.
- both sides of a certain structure means one side and the other side facing in the longitudinal direction (L)
- both ends of a certain structure means one end and the other end facing in the width direction (W).
- the apparatus for manufacturing a unit cell includes a center electrode transfer unit 111 for transferring the center electrode 11, a center electrode cutting unit 112 for cutting the center electrode 11, and an upper portion.
- Each of the center electrode transfer unit 111, the upper electrode transfer unit 121, and the lower electrode transfer unit 131 may serve to transfer the center electrode 11, the upper electrode 12, and the lower electrode 13, respectively.
- the center electrode transfer unit 111, the upper electrode transfer unit 121, and the lower electrode transfer unit 131 transfer each of the center electrode 11, the upper electrode 12, and the lower electrode 13 to the stack transfer unit ( 211) can be supplied.
- Each of the center electrode transfer unit 111, the upper electrode transfer unit 121, and the lower electrode transfer unit 131 may be a conveyor belt, and after the electrode is cut, a plurality of cut electrodes may be spaced apart from each other and transported. .
- the center electrode cutting part 112, the upper electrode cutting part 122, and the lower electrode cutting part 132 each serve to cut the center electrode 11, the upper electrode 12, and the lower electrode 13, respectively.
- each of the center electrode cutting unit 112, the upper electrode cutting unit 122, and the lower electrode cutting unit 132 may include a cutting means such as a blade, a wheel, or a laser.
- electrode sheets and individual electrodes formed by cutting electrode sheets are all referred to as electrodes 11, 12, and 13 without distinguishing terms from each other.
- the laminate 20 includes a central electrode 11, an upper separator 14 disposed on one surface of the central electrode 11, a lower separator 15 disposed on the other surface of the central electrode 11, and an upper separator 14 ) and a lower electrode 13 disposed on the upper electrode 12 and the lower separator 15. That is, in the laminate 20, the upper separator 14 and the upper electrode 12 are sequentially stacked on one surface of the central electrode 11, and the lower separator 15 and the lower electrode 13 are sequentially stacked on the other surface. It has a layered structure. In other words, the laminate 20 has a structure in which a lower electrode 13, a lower separator 15, a central electrode 11, an upper separator 14, and an upper electrode 12 are sequentially stacked from the bottom.
- the stack transfer unit 211 may serve to transfer the stack 20 .
- the stack transfer unit 211 includes the center electrode 11, the upper electrode 12, and the lower electrode 13 supplied from the center electrode transfer unit 111, the upper electrode transfer unit 121, and the lower electrode transfer unit 131, respectively. ) can be transferred and supplied to subsequent units such as the unit cell transfer unit 311.
- the stack transfer unit 211 may also be a conveyor belt.
- the laminate cutting unit 212 cuts the laminate 20 to form unit cells 30 .
- the laminate cutting unit 212 may also include a cutting means such as a blade, a wheel, or a laser.
- the lamination part 213 may perform a role of fixing the laminate 20 by heating and/or pressurizing it.
- the lamination unit 213 may include at least one of a lamination roller and a lamination heater, and the laminate 20 may be heated and/or pressurized by passing through the lamination roller, and then heated by passing through the lamination heater. It is not limited.
- the unit cell transfer unit 311 may serve to transfer the unit cells 30 .
- the unit cell transfer unit 311 may also be a conveyor belt, and may transport the plurality of unit cells 30 at regular intervals.
- the vision unit 312 measures the unit cell 30 . Specifically, the vision unit 312 provides location information of at least one of the central electrode 11, the upper separator 14, the lower separator 15, the upper electrode 12, and the lower electrode 13 of the unit cell 30. It is possible to measure the measurement value including. In other words, the measured value of the unit cell 30 measured by the vision unit 312 is the middle electrode 11, the upper separator 14, the lower separator 15, the upper electrode 12, and the lower electrode 13. Contains at least one piece of location information. Through this, it is possible to measure the alignment state between each component of the unit cell 30 .
- the vision unit 312 may measure each measurement value of the plurality of unit cells 30 . That is, the vision unit 312 is a central electrode 11, an upper separator 14, a lower separator 15, and an upper electrode 12 of each of the plurality of unit cells 30, which are measured values of each of the plurality of unit cells 30. ) and at least one location information of the lower electrode 13 may be measured.
- the vision unit 312 is an upper vision unit 312T disposed on the upper electrode 12 of the unit cell 30 and a lower vision unit 312B disposed on the lower electrode 13 of the unit cell 30. contains at least one Preferably, the vision unit 313 includes an upper vision unit 312T disposed on the upper electrode 12 of the unit cell 30 and a lower vision unit disposed on the lower electrode 13 of the unit cell 30. (312B) all included.
- the upper vision unit 312T measures the center electrode 11 , the upper separator 14 , and the upper electrode 12 . Also, the lower vision unit 312B measures the center electrode 11 , the lower separator 15 , and the lower electrode 13 . Specific measurement values measured by each of the upper vision unit 312T and the lower vision unit 312B will be described in detail in the description of FIGS. 4 to 6 .
- the control unit 313 improves alignment of the unit cells 30 based on the measurement values measured by the vision unit 312 .
- the controller 313 controls the central electrode 11, the upper separator 14, the lower separator 15, the upper electrode 12, and the lower electrode 13 based on the measured values measured by the vision unit 312. At least one of the position correction values may be calculated.
- the controller 313 controls the central electrode 11, the upper separator 14, the lower separator 15, the upper electrode 12, and the lower electrode 13 based on the measured values measured by the vision unit 312. ) Calculate each position correction value.
- the position correction value means including at least one of a correction direction and a correction distance.
- control unit 313 controls the position of the center electrode 11 supplied to the stack transfer unit 211, the position of the upper electrode 12 supplied to the stack transfer unit 211, and the stacked stack based on the calculated position correction value. At least one of the position of the lower electrode 13 supplied to the sieve transfer unit 211 and the cutting position of the laminate cutting unit 212 may be corrected. At this time, the control unit 313 operates the system based on the calculated position correction value of at least one of the center electrode 11, the upper separator 14, the lower separator 15, the upper electrode 12, and the lower electrode 13. Calibration can be performed automatically through, and in this respect, the control unit 313 may include a programmable logic controller (PLC).
- PLC programmable logic controller
- the vision unit 312 may measure the measured values of the plurality of unit cells 30, and at this time, the controller 313 is based on the average value of the measured values of each of the plurality of unit cells 30.
- the position correction value can be calculated.
- the controller 313 may calculate a position correction value based on a trend of misalignment of the plurality of unit cells 30 .
- the controller 313 calculates the number of unit cells 30 used in calculating the position correction value, the position correction value at which correction starts, the percentage of the actual position correction value to the position correction value, and the position correction value. At least one of a first PLC transmission period transmitted to the PLC, a second PLC transmission period, and a period to which the second PLC transmission period is applied may be set.
- the second PLC transmission period is a period applied immediately after the type of unit cell is replaced
- the first PLC transmission period is a period applied after the second PLC transmission period is applied during a period to be applied.
- the control unit 313 calculates the position correction value based on the average value of the measured values of the 20 unit cells 30. can be computed.
- the position correction value at which correction starts is to prevent excessive correction. For example, when the position correction value at which correction starts is set to 1 mm, position correction is performed only when the calculated position correction value is 1 mm or more. Therefore, when the calculated position correction value is less than 1 mm, the controller 313 does not perform position correction.
- the percentage of the actual position correction value to the position correction value is also to prevent excessive correction. For example, when the percentage of the actual position correction value to the position correction value is set to 70%, the actual position correction is performed by a value corresponding to 70% of the calculated position correction value.
- the first PLC transmission period is to prevent system delay.
- the vision unit 312 may continuously measure the measured value of each of the plurality of unit cells 30, and the control unit 313 may determine the position in real time according to the measured value of each of the plurality of unit cells 30 continuously measured. It is possible to calculate the correction value and perform the correction, but this may not be desirable in terms of efficiency. Therefore, it is possible to perform correction according to the position correction value transmitted to the PLC by setting the first PLC transmission period and transmitting the position correction value calculated for each set period to the PLC.
- the first PLC transmission period may be based on the number of the plurality of unit cells 30 . For example, when the first PLC transmission period is 30, the position correction value may be transmitted to the PLC based on 30 unit cells 30.
- the control unit 313 controls the first unit cell 30 to the 20th unit cell.
- the position correction value calculated based on the average value of the measured values up to (30) is primarily transmitted to the PLC, and based on the average value of the measured values from the 31st unit cell 30 to the 50th unit cell 30
- the calculated position correction value can be transmitted to the PLC secondarily.
- the first PLC transmission period may be set based on time.
- a similar effect may be obtained by setting a period for updating the position correction value instead of the first PLC transmission period.
- the second PLC transmission period is a position correction value that is the basis of correction by applying a shortened PLC transmission period of the position correction value immediately after the type of unit cell 30 having a relatively high misalignment rate is replaced. It is to increase the transmission frequency of From this point of view, the second PLC transmission period for transmitting the position correction value immediately after the type of unit cell 30 is replaced may be different from the above-described first PLC transmission period, and may be shorter than the first PLC transmission period. can However, depending on the design, the second PLC transmission period may be equal to or longer than the first PLC transmission period.
- the second PLC transmission period may also be based on the number of the plurality of unit cells 30, but may also be set based on time. In addition, a similar effect may be obtained by setting a cycle for updating the position correction value immediately after the type of unit cell 30 is replaced instead of the second PLC transmission cycle.
- the period to which the second PLC transmission period is applied is the period to which the second PLC transmission period is applied immediately after the type of unit cell 30 is replaced. Therefore, the second PLC transmission period is applied during the period to which the second PLC transmission period is applied immediately after the type of unit cell 30 is changed, and the second PLC transmission period immediately after the type of unit cell 30 is changed. After the period to be applied has elapsed, the first PLC transmission period is applied.
- the period to which the second PLC transmission period is applied may also be based on the number of the plurality of unit cells 30, but may also be set based on time.
- the controller 313 calculates the position correction value based on the average value of the measured values of each of the plurality of unit cells 30, the measured value of the n-th unit cell 30 outside the reference range and n At least one of the measurement values having a difference between the measurement value of the -1st unit cell 30 and the reference value or more may be excluded from the measurement value that is the basis of the operation.
- the measurement value may include an erroneous measurement value, and when this measurement value is included in the measurement value that is the basis of the calculation, there may be an error in the position correction value.
- control unit 313 may exclude measurement values that are the basis for calculation of measurement values outside the reference range among the measurement values of the n-th unit cell 30, and for example, measurement values greater than or equal to the upper limit range and values less than or equal to the lower limit range. can be excluded from the measured value that is the basis of the calculation.
- control unit 313 may exclude the measurement value that is the basis of the calculation of the measurement value having a difference greater than or equal to the reference value from the measurement value of the n-1 th unit cell 30, for example, the n-1 th unit cell ( 30), the measurement value that is the basis of the calculation can be excluded.
- the controller 313 determines the center electrode 11, the upper separator 14, the lower separator 15, the upper electrode 12, and the lower electrode ( 13), at least one position correction value may be calculated.
- the control unit 313 based on the calculated position correction value, the position of the center electrode 11 supplied to the stack transfer unit 211, the position of the upper electrode 12 supplied to the stack transfer unit 211, At least one of the position of the lower electrode 13 supplied to the stack transfer unit 211 and the cutting position of the stack cut unit 212 may be corrected.
- the controller 313 may correct the position of the center electrode 11 in the width direction (W). In addition, the controller 313 may correct the positions of the upper electrode 12 and the lower electrode 13 in the longitudinal direction (L) and the width direction (W).
- the control unit 313 adjusts the position of an Edge Position Control (EPC) sensor that measures the position of each end of the center electrode 11, the upper electrode 12, and the lower electrode 13, so that the center electrode 11, the upper Positions of the electrode 12 and the lower electrode 13 may be corrected in the width direction (W).
- EPC Edge Position Control
- each of the center electrode transfer unit 111, the upper electrode transfer unit 121, and the lower electrode transfer unit 131 measures the position of at least one end of the electrodes 11, 12, and 13.
- An EPC (Edge Position Control) sensor and An EPC roller for adjusting the position of the electrodes 11, 12, and 13 in the width direction (W) according to the value measured by the EPC sensor may be included, and the controller 313 includes the central electrode transfer unit 111, the upper electrode Positions of the EPC sensors included in each of the transfer unit 121 and the lower electrode transfer unit 131 may be adjusted.
- the EPC sensor is disposed before the electrodes 11, 12, and 13 are cut by the cutting parts 112, 122, and 132, and thus the center of the center where the position in the width direction W is corrected by the controller 313.
- Each of the electrode 11, upper electrode 12, and lower electrode 13 is an electrode sheet before being cut into a center electrode cutting part 112, an upper electrode cutting part 122, and a lower electrode cutting part 132, respectively.
- control unit 313 adjusts the speed at which each of the upper electrode 12 and the lower electrode 13 is supplied to the stack transfer unit 211 to determine the position of each of the upper electrode 12 and the lower electrode 13 by length. It may be to correct in the direction (L). At this time, each of the upper electrode 12 and the lower electrode 13 whose position in the longitudinal direction (L) is corrected by the control unit 313 is an upper electrode cutting part 122 and a lower electrode cutting part 132, respectively. It is a cut individual electrode.
- the cutting position correction of the laminate cutting unit 212 may be performed by automatic correction through a system in the control unit 313 based on the position correction value calculated by the control unit 313, and the operator may adjust the position correction value calculated by the operator.
- Manual correction may be performed by directly inputting the corrected cutting position of the laminate cutting unit 212 to the control unit 313 .
- the controller 313 may have an alarm function.
- the control unit 313 is difficult to perform automatic correction, such as poor placement angle due to the rotation of the center electrode 11, poor placement angle due to the rotation of the upper electrode 12, and poor placement angle due to the rotation of the lower electrode 13.
- Defective arrangement angle according to rotation, defective cutting of the center electrode 11, defective cutting of the upper electrode 12, defective cutting of the lower electrode 13, and defective cutting angle of the separators 14 and 15 are determined, and these An alarm can be set to sound when a defect occurs. Therefore, it is possible for the operator to listen to the alarm and perform manual correction for items that are difficult to automatically correct.
- the vision unit 312 may further measure values necessary for determining defects as measurement values.
- FIG. 2 is a perspective view of a unit cell according to an embodiment of the present invention.
- FIG 3 is a perspective view of a unit cell according to another embodiment of the present invention.
- the unit cell 30 includes a central electrode 11 having a tab 11T, an upper separator 14 disposed on the upper surface of the central electrode 11, and an upper separator 14.
- the upper electrode 12 disposed on the upper surface and having the tab 12T, the lower separator 15 disposed on the lower surface of the center electrode 11, and the lower separator 15 disposed on the lower surface of the lower separator 15 and having the tab 13T and a lower electrode 13 having The tabs 11T, 12T, and 13T protrude from one end of the electrodes 11, 12, and 13.
- Each of the upper electrode 12 and the lower electrode 13 may have a polarity different from that of the central electrode 11 .
- the central electrode 11 may be a cathode, and each of the upper electrode 12 and the lower electrode 13 may be an anode.
- the central electrode 11 may be an anode, and each of the upper electrode 12 and the lower electrode 13 may be a cathode.
- the tab 12T of the upper electrode 12 and the tab 13T of the lower electrode 13 are the tabs of the central electrode 11 ( 11T) and is arranged in the opposite direction.
- Each of the tab 11T of the central electrode 11, the tab 12T of the upper electrode 12, and the tab 13T of the lower electrode 13 may be disposed in the center of one end where the tab of the electrode is formed.
- the tab 12T of the upper electrode 12 and the tab 13T of the lower electrode 13 are aligned with the tab 11T of the center electrode 11 in the thickness direction T. They can be arranged so that they overlap.
- the tab 12T of the upper electrode 12 and the tab 13T of the lower electrode 13 are the tabs of the central electrode 11 They are spaced apart from each other in the same direction as (11T).
- the tab 11T of the central electrode 11 is disposed on one side of the unit cell 30, and each of the tab 12T of the upper electrode 12 and the tab 13T of the lower electrode 13 is a unit cell ( 30) may be disposed on the other side.
- FIG. 30 In FIG.
- the tab 11T of the central electrode 11 is disposed on the left side of the unit cell 30, and the tab 12T of the upper electrode 12 and the tab 13T of the lower electrode 13 ) are shown as being disposed on the right side of the unit cell 30, but the tab 11T of the central electrode 11 is disposed on the right side of the unit cell 30, and the tab of the upper electrode 12 12T and the tab 13T of the lower electrode 13 may be disposed on the left side of the unit cell 30 as a matter of course.
- the tab 12T of the upper electrode 12 and the tab 13T of the lower electrode 13 may be disposed to overlap each other on a plane.
- FIG. 4 is a diagram for explaining measurement values measured by a non-unit in a unit cell of FIG. 2 .
- FIG. 4(a) is a diagram for explaining measurement values of the upper vision unit 312T
- FIG. 4(b) is a diagram for explaining measurement values of the lower vision unit 312T.
- FIG. 5 is a diagram for explaining measurement values measured by a non-unit in a unit cell of FIG. 3 .
- FIG. 5(a) is a diagram for explaining measurement values of the upper vision unit 312T
- FIG. 5(b) is a diagram for explaining measurement values of the lower vision unit 312T.
- FIG. 6 is a diagram for explaining measurement values measured by a non-visual unit in a structure in which the unit cell of FIG. 3 is deformed.
- FIG. 6(a) is a diagram for explaining measurement values of the upper vision unit 312T
- FIG. 6(b) is a diagram for explaining measurement values of the lower vision unit 312T.
- the upper vision unit 312T is a distance TL1 between one side portion 14s of the upper separator 14 and one side portion 11Ts of the tab 11T of the center electrode 11, both sides of the upper separator 14 (14s) and the distance (TL2a, TL2b) between both side portions 12s of the upper electrode 12, the distance between both ends 14e of the upper separator 14 and both ends 12e of the upper electrode 12 At least one of (TL3a, TL3b) and the distance TL4 between one end 14e of the upper separator 14 and the end 11Te of the tab 11T of the center electrode 11 is measured.
- the end portion 11Te of the tab 11T of the center electrode 11 means an edge region connecting both side portions 11Ts of the tab 11Ts of the center electrode 11 .
- the upper vision unit 312T measures all of the aforementioned distances.
- one end 14e of the upper separator 14 is an end close to the tab 11T of the central electrode 11 among both ends 14e of the upper separator 14 .
- the lower vision portion 312B is formed by a distance BL1 between one side portion 15s of the lower separator 15 and one side portion 11Ts of the tab 11T of the center electrode 11, the lower separator 15
- the distances BL2a and BL2b between both side portions 15s of and both side portions 13s of the lower electrode 13, both ends 15e of the lower separator 15 and both ends 13e of the lower electrode 13 At least one of the distances BL3a and BL3b and the distance BL4 between one end 15e of the lower separator 15 and the end 11Te of the tab 11T of the central electrode 11 is measured.
- the lower vision unit 312B measures all of the aforementioned distances.
- one end 15e of the lower separator 15 is an end close to the tab 11T of the central electrode 11 among both ends 15e of the lower separator 15 .
- the upper vision unit 312T measures a distance TL2a between one side portion 14s of the upper separator 14 and one side portion 12s of the upper electrode 12 in two or more areas
- the distance TL2b between the other side portion 14s of the upper separator 14 and the other side portion 12s of the upper electrode 12 may be measured in two or more areas
- the lower vision unit 312B measures the distance BL2a between one side 15s of the lower separator 15 and one side 13s of the lower electrode 13 in two or more areas, and measures the distance BL2a in two or more areas.
- the distance BL2b between the other side portion 15s of the lower separator 15 and the other side portion 13s of the lower electrode 13 may be measured.
- the upper vision unit 312T measures the distance TL2a between one side portion 14s of the upper separator 14 and one side portion 12s of the upper electrode 12 in one area, and in one area.
- the distance TL2b between the other side portion 14s of the upper separator 14 and the other side portion 12s of the upper electrode 12 may be measured.
- the lower vision unit 312B measures the distance BL2a between one side portion 15s of the lower separator 15 and one side portion 13s of the lower electrode 13 in one area, and measures the distance BL2a in one area.
- the distance BL2b between one side portion 15s of the lower separator 15 and one side portion 13s of the lower electrode 13 may be measured.
- the upper vision unit 312T measures the distance TL3a between one end 14e of the upper separator 14 and one end 12e of the upper electrode 12 in two or more areas, and in two or more areas. A distance TL3b between the other end 14e of the upper separator 14 and the other end 12e of the upper electrode 12 may be measured.
- the lower vision unit 312B measures the distance BL3a between one end 15e of the lower separator 15 and one end 13e of the lower electrode 13 in two or more areas, and measures the distance BL3a in two or more areas. , the distance BL3b between the other end 15e of the lower separator 15 and the other end 13e of the lower electrode 13 may be measured.
- the upper vision unit 312T measures the distance TL3a between one end 14e of the upper separator 14 and one end 12e of the upper electrode 12 in one area.
- the distance TL3b between the other end 14e of the upper separator 14 and the other end 12e of the upper electrode 12 may be measured in one area.
- the lower vision unit 312B measures the distance BL3a between one end 15e of the lower separator 15 and one end 13e of the lower electrode 13 in one area, and measures the distance BL3a in one area.
- the distance BL3b between the other end 15e of the lower separator 15 and the other end 13e of the lower electrode 13 may be measured at .
- the control unit 313 measures the distance TL1 between one side portion 14s of the upper separator 14 and one side portion 11Ts of the tab 11T of the center electrode 11 measured by the upper vision unit 312T and the lower portion TL1.
- the laminate body The cutting position of the cutting part 212 is corrected in the direction from one side of the tab 11T of the center electrode 11 to the other side, and if it is smaller than the reference value, the cutting position of the laminate cutting part 212 is changed to the center electrode It can be corrected in the direction from the other side of the tab 11T of (11) to one side.
- the cutting position of the laminate cutting unit 212 may be performed by manual correction by directly inputting the cutting position of the laminate cutting unit 212 corrected by the calculated position correction value into the control unit 313. .
- the control unit 313 determines that the distance (TL2a or TL2b) between one side portion 14s of the upper separator 14 and one side portion 12s of the upper electrode 12 measured by the upper vision unit 312T is greater than a reference value.
- the distance TL2b or TL2a between the other side portion 14s of the upper separator 14 and the other side portion 12s of the upper electrode 12 is smaller than the reference value, the upper electrode 12 is connected to the upper electrode 12 ) is corrected in the direction from the other side to one side.
- the distance BL2a or BL2b between one side portion 15s of the lower separator 15 and one side portion 13s of the lower electrode 13 measured by the lower vision portion 312B is greater than the reference value
- the lower electrode 13 is Correction is made in the direction from the other side to one side.
- one side refers to a side opposite to the other side
- the other side refers to a side opposite to one side
- the positions of the one side and the other side are not determined as specific positions.
- the control unit 313 determines that the distance (TL3a or TL3b) between one end 14e of the upper separator 14 and one end 12e of the upper electrode 12 measured by the upper vision unit 312T is greater than a reference value.
- the distance TL3b or TL3a between the other end 14e of the upper separator 14 and the other end 12e of the upper electrode 12 is smaller than the reference value, the upper electrode 12 is ) is corrected in the direction from the other end to one end.
- the distance BL3a or BL3b between one end 15e of the lower separator 15 and one end 13e of the lower electrode 13 measured by the lower vision unit 312B is greater than the reference value
- the distance BL3b or BL3a between the other end 15e of the lower separator 15 and the other end 13e of the lower electrode 13 is smaller than the reference value, the lower electrode 15 is moved from the other end to one end. correct in the direction
- one end means the opposite end of the other end
- the other end means the opposite end of the one end, and the position of each of the one end and the other end is not set to a specific position.
- the controller 313 uses the distance TL4 between one end 14e of the upper separator 14 and the end 11Te of the tab 11T of the central electrode 11 as measured by the upper vision unit 312T as a reference. If the value is greater than the value, the position of the central electrode 11 is corrected in the direction from one end of the upper separator 14 to the other end, and if it is smaller than the reference value, the position of the central electrode 11 is adjusted to the other end of the upper separator 14 Correction is made in the direction from end to end. Similarly, the distance BL4 between one end 15e of the lower separator 15 and the end 11Te of the tab 11T of the central electrode 11 measured by the lower vision unit 312B is greater than the reference value. In this case, the position of the central electrode 11 is corrected in the direction from one end of the lower separator 15 to the other end. Correct in the direction towards the end.
- the tab 11T of the central electrode 11, the upper separator 14, and the lower separator 15, respectively, 11Ts, 14s, and 15s have directions opposite to the transfer direction of the unit cell 30. It may be a side part disposed on. Referring to FIG. 4(a), one side of each of the tab 11T of the center electrode 11 and the upper separator 14 is a side disposed on the left side, and based on FIG. 4(b), the center electrode 11 One side of each of the tab 11T of and the lower separator 15 is a side disposed on the right side. Therefore, based on FIG.
- the upper vision portion 312T is the distance TL1 between the left side portion 14s of the upper separator 14 and the left side portion 11Ts of the tab 11T of the central electrode 11. ) is measured, and based on FIG. 4(b), the lower vision portion 312B is between the right side portion 15s of the lower separator 15 and the right side portion 11Ts of the tab 11T of the center electrode 11.
- the distance BL1 can be measured.
- the tab 11T of the central electrode 11, the upper separator 14, and the side portions 11Ts, 14s, and 15s of each of the lower separator 15 are disposed in the transfer direction of the unit cell 30 may be a side. Therefore, based on FIG. 4(a), the upper vision unit 312T measures the distance between the right side portion 14s of the upper separator 14 and the right side portion 11Ts of the tab 11T of the central electrode 11. 4(b), the lower vision unit 312B measures the distance between the left side portion 15s of the lower separator 15 and the left side portion 11Ts of the tab 11T of the central electrode 11. can do.
- the upper vision unit 312T measures the distance between both side portions 14s of the upper separator 14 and both side portions 11Ts of the tab 11T of the central electrode 11, and measures the distance between the lower vision unit 312B. may measure the distance between both side portions 15s of the lower separator 15 and both side portions 11Ts of the tab 11T of the center electrode 11.
- one side portions 14s and 15s of the upper separator 14 and the lower separator 15 are the center electrode 11 of both side portions 14s and 15s of the upper separator 14 and the lower separator 15, respectively. ) may be a side close to the tab 11T.
- One side portion 11Ts of the tab 11T of the center electrode 11 is one side portion of each of the upper separator 14 and the lower separator 15 among both side portions 11Ts of the tab 11T of the center electrode 11 ( 14s, 15s) and close side.
- one side of each of the tab 11T of the center electrode 11 and the upper separator 14 is a side disposed on the left side, and based on FIG.
- the center electrode 11 One side of each of the tab 11T of and the lower separator 15 is a side disposed on the right side. Therefore, based on FIG. 5(a), the upper vision portion 312T is the distance TL1 between the left side portion 14s of the upper separator 14 and the left side portion 11Ts of the tab 11T of the central electrode 11. ) is measured, and based on FIG. 5 (b), the lower vision portion 312B is between the right side portion 15s of the lower separator 15 and the right side portion 11Ts of the tab 11T of the center electrode 11. The distance BL1 can be measured. Through this, it is possible to measure the distance between components to be measured without interference from other components.
- one side portions 14s and 15s of the upper separator 14 and the lower separator 15 are the center electrode 11 of both side portions 14s and 15s of the upper separator 14 and the lower separator 15, respectively.
- ) may be a side close to the tab 11T.
- One side portion 11Ts of the tab 11T of the center electrode 11 is formed with one side portion of each of the upper separator 14 and the lower separator 15 among both side portions 11Ts of the tab 11T of the center electrode 11. It may be the near side.
- one side of each of the tab 11T of the center electrode 11 and the upper separator 14 is a side disposed on the right side, and based on FIG.
- the center electrode 11 One side of each of the tab 11T of and the lower separator 15 is a side disposed on the left side. Therefore, based on FIG. 6(a), the upper vision portion 312T is the distance TL1 between the right side portion 14s of the upper separator 14 and the right side portion 11Ts of the tab 11T of the central electrode 11. ) is measured, and based on FIG. 6 (b), the lower vision portion 312B is between the left side portion 15s of the lower separator 15 and the left side portion 11Ts of the tab 11T of the center electrode 11. The distance BL1 can be measured. Through this, it is possible to measure the distance between components to be measured without interference from other components.
- a unit cell manufacturing method includes a central electrode, an upper separator disposed on one surface of the central electrode, a lower separator disposed on the other surface of the central electrode, an upper electrode disposed on the upper separator, and forming a laminate including a lower electrode disposed on the lower separator; forming unit cells by cutting the upper separator and lower separator of the laminate; Measuring a measurement value including position information of at least one of a central electrode, an upper separator, a lower separator, an upper electrode, and a lower electrode of a unit cell; Calculating a position correction value of at least one of the center electrode, the upper separator, the lower separator, the upper electrode, and the lower electrode based on the measured value; and based on the calculated position correction value, the position of the center electrode in the step of forming the laminate, the position of the upper electrode in the step of forming the laminate, and the lower electrode in the step of forming the laminate, based on the calculated position correction value. Compensating at least one of
- the same information as described above in the description of the unit cell manufacturing apparatus according to an embodiment of the present invention may be applied to the unit cell manufacturing method according to an embodiment of the present invention.
- the step of measuring the measured value measures the measured value of each of a plurality of unit cells
- the step of calculating the position correction value calculates the position correction value based on the average value of the measured values of each of the plurality of unit cells. it may be Therefore, a detailed description of the method for manufacturing a unit cell according to an embodiment of the present invention will be omitted.
- Ppk process capability index
- the process capability index is the ratio of process capability and specification, and is an index that indicates whether the process has sufficient capability to produce a product that meets the specification.
- a high process capability index means high accuracy that is located in the center of the upper specification limit and the lower specification limit.
- Process capability indices representing process capability include Cp, Cpk, Pp, and Ppk, among which Ppk was measured using the overall standard deviation of a long-term process.
- the position correction value arbitrarily determined by the operator by looking at the alignment state of the unit cells 30 is transmitted to the control unit 313. It can be seen that the position defect rate decreased by 0.56% from 1.71% to 1.15% compared to the case of manual correction by direct input.
- FIG. 9 is a graph showing a decrease in the number of manual corrections by an operator according to the present invention.
- the position correction value arbitrarily determined by the operator by looking at the alignment state of the unit cells 30 is transmitted to the control unit 313. It can be seen that the number of manual corrections by the operator decreased by about 72% from 176 times to 49 times during a week compared to the case of performing manual correction by inputting directly.
- the control unit does not calculate the position correction value based on the position information of each of a plurality of unit cells, but the position information measured by the vision unit of each of the plurality of unit cells or the position information directly confirmed by the operator's eyes Based on this, the alignment state is grasped, and accordingly, the operator arbitrarily inputs the position correction value to the control unit. Therefore, in the case of manual correction, the input position correction value is not accurate, and there is a limit in that different position correction values are derived and applied according to the operator.
- first, second, etc. is for distinguishing elements from each other, and does not mean a priority between elements or an absolute order.
- a first element in some parts of this specification may be referred to as a second element in other parts of this specification.
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Abstract
Description
Claims (15)
- 중앙 전극, 상기 중앙 전극의 일면 상에 배치되는 상부 분리막, 상기 중앙 전극의 타면 상에 배치되는 하부 분리막, 상기 상부 분리막 상에 배치되는 상부 전극 및 상기 하부 분리막 상에 배치되는 하부 전극을 포함하는 적층체를 이송하는 적층체 이송부;상기 적층체 이송부로 상기 중앙 전극을 공급하는 중앙 전극 이송부;상기 적층체 이송부로 상기 상부 전극을 공급하는 상부 전극 이송부;상기 적층체 이송부로 상기 하부 전극을 공급하는 하부 전극 이송부;상기 적층체의 상부 분리막 및 하부 분리막을 커팅하여 단위 셀을 형성하는 적층체 커팅부;상기 단위 셀의 상기 중앙 전극, 상기 상부 분리막, 상기 하부 분리막, 상기 상부 전극 및 상기 하부 전극 중 적어도 하나의 위치 정보를 포함하는 측정 값을 측정하는 비전부; 및상기 비전부에서 측정된 상기 측정 값에 기초하여, 상기 중앙 전극, 상기 상부 분리막, 상기 하부 분리막, 상기 상부 전극 및 상기 하부 전극 중 적어도 하나의 위치 보정 값을 연산하고, 연산된 상기 위치 보정 값에 기초하여 상기 적층체 이송부로 공급되는 중앙 전극의 위치, 상기 적층체 이송부로 공급되는 상부 전극의 위치, 상기 적층체 이송부로 공급되는 하부 전극의 위치 및 상기 적층체 커팅부의 커팅 위치 중 적어도 하나를 보정하는 제어부; 를 포함하는,단위 셀 제조 장치.
- 제1항에 있어서,상기 비전부는 상기 단위 셀의 상부 전극 상에 배치되는 상부 비전부 및 상기 단위 셀의 하부 전극 상에 배치되는 하부 비전부 중 적어도 하나를 포함하고,상기 상부 비전부는 상기 상부 분리막의 일 측부와 상기 중앙 전극의 탭의 일 측부 사이의 거리, 상기 상부 분리막의 양 측부와 상기 상부 전극의 양 측부 사이의 거리, 상기 상부 분리막의 양 단부와 상기 상부 전극의 양 단부 사이의 거리 및 상기 상부 분리막의 일 단부와 상기 중앙 전극의 탭의 단부 사이의 거리 중 적어도 하나를 측정하고,상기 하부 비전부는 상기 하부 분리막의 일 측부와 상기 중앙 전극의 탭의 일 측부 사이의 거리, 상기 하부 분리막의 양 측부와 상기 하부 전극의 양 측부 사이의 거리, 상기 하부 분리막의 양 단부와 상기 하부 전극의 양 단부 사이의 거리 및 상기 하부 분리막의 일 단부와 상기 중앙 전극의 탭의 단부 사이의 거리 중 적어도 하나를 측정하며,상기 상부 분리막 및 상기 하부 분리막 각각의 일 단부는 상기 상부 분리막 및 상기 하부 분리막 각각의 양 단부 중 상기 중앙 전극의 탭과 가까운 단부인,단위 셀 제조 장치.
- 제2항에 있어서,상기 상부 전극의 탭 및 상기 하부 전극의 탭은 상기 중앙 전극의 탭과 반대 방향에 배치되고,상기 중앙 전극의 탭, 상기 상부 분리막 및 상기 하부 분리막 각각의 일 측부는 상기 중앙 전극의 탭, 상기 상부 분리막 및 상기 하부 분리막 각각의 양 측부 중 상기 단위 셀의 이송 방향의 반대 방향에 배치된 측부인,단위 셀 제조 장치.
- 제2항에 있어서,상기 상부 전극의 탭 및 상기 하부 전극의 탭은 상기 중앙 전극의 탭과 동일한 방향에 서로 이격되어 배치되고,상기 상부 분리막 및 상기 하부 분리막 각각의 일 측부는 상기 상부 분리막 및 상기 하부 분리막 각각의 양 측부 중 상기 중앙 전극의 탭과 가까운 측부이며,상기 중앙 전극의 탭의 일 측부는 상기 중앙 전극의 탭의 양 측부 중 상기 상부 분리막 및 상기 하부 분리막 각각의 일 측부와 가까운 측부인,단위 셀 제조 장치.
- 제1항에 있어서,상기 중앙 전극, 상기 상부 전극 및 상기 하부 전극 각각의 이송 방향을 길이 방향이라 하고, 상기 길이 방향과 평면 상에서 수직한 방향을 폭 방향이라 할 때,상기 제어부는 상기 중앙 전극의 위치를 폭 방향으로 보정하고, 상기 상부 전극 및 상기 하부 전극 각각의 위치를 길이 방향 및 폭 방향으로 보정하는,단위 셀 제조 장치.
- 제5항에 있어서,상기 제어부는 상기 상부 전극 및 상기 하부 전극 각각의 상기 적층체 이송부로 공급되는 속도를 조정하여, 상기 상부 전극 및 상기 하부 전극 각각의 위치를 길이 방향으로 보정하는,단위 셀 제조 장치.
- 제5항에 있어서,상기 제어부는 상기 중앙 전극, 상기 상부 전극 및 상기 하부 전극 각각의 양 단부 중 적어도 하나의 위치를 측정하는 EPC(Edge Position Control) 센서의 위치를 조정하여 상기 중앙 전극, 상기 상부 전극 및 상기 하부 전극 각각의 위치를 폭 방향으로 보정하는,단위 셀 제조 장치.
- 제2항에 있어서,상기 제어부는 상기 상부 비전부로 측정된 상기 상부 분리막의 일 측부와 상기 중앙 전극의 탭의 일 측부 사이의 거리 및 상기 하부 비전부로 측정된 상기 하부 분리막의 일 측부와 상기 중앙 전극의 탭의 일 측부 사이의 거리가 기준 값보다 큰 경우 상기 적층체 커팅부의 커팅 위치를 상기 중앙 전극의 탭의 일 측부에서 타 측부를 향하는 방향으로 보정하고, 기준 값보다 작은 경우 상기 적층체 커팅부의 커팅 위치를 상기 중앙 전극의 탭의 타 측부에서 일 측부를 향하는 방향으로 보정하는,단위 셀 제조 장치.
- 제2항에 있어서,상기 제어부는,상기 상부 비전부로 측정된 상기 상부 분리막의 일 측부와 상기 상부 전극의 일 측부 사이의 거리가 기준 값보다 크고, 상기 상부 분리막의 타 측부와 상기 상부 전극의 타 측부 사이의 거리가 기준 값보다 작은 경우 상기 상부 전극을 상기 상부 전극의 타 측부에서 일 측부를 향하는 방향으로 보정하고,상기 하부 비전부로 측정된 상기 하부 분리막의 일 측부와 상기 하부 전극의 일 측부 사이의 거리가 기준 값보다 크고, 상기 하부 분리막의 타 측부와 상기 하부 전극의 타 측부 사이의 거리가 기준 값보다 작은 경우 상기 하부 전극을 상기 하부 전극을의 타 측부에서 일 측부를 향하는 방향으로 보정하고,상기 상부 비전부로 측정된 상기 상부 분리막의 일 단부와 상기 상부 전극의 일 단부 사이의 거리가 기준 값보다 크고, 상기 상부 분리막의 타 단부와 상기 상부 전극의 타 단부 사이의 거리가 기준 값보다 작은 경우 상기 상부 전극을 상기 상부 전극의 타 단부에서 일 단부를 향하는 방향으로 보정하며,상기 하부 비전부로 측정된 상기 하부 분리막의 일 단부와 상기 하부 전극의 일 단부 사이의 거리가 기준 값보다 크고, 상기 하부 분리막의 타 단부와 상기 하부 전극의 타 단부 사이의 거리가 기준 값보다 작은 경우 상기 하부 전극을 상기 하부 전극의 타 단부에서 일 단부를 향하는 방향으로 보정하는,단위 셀 제조 장치.
- 제2항에 있어서,상기 제어부는,상기 상부 비전부로 측정된 상기 상부 분리막의 일 단부와 상기 중앙 전극의 탭의 단부 사이의 거리가 기준 값보다 큰 경우 상기 중앙 전극의 위치를 상기 상부 분리막의 일 단부에서 타 단부를 향하는 방향으로 보정하고, 기준 값보다 작은 경우 상기 중앙 전극의 위치를 상기 상부 분리막의 타 단부에서 일 단부를 향하는 방향으로 보정하며,상기 하부 비전부로 측정된 상기 하부 분리막의 일 단부와 상기 중앙 전극의 탭의 단부 사이의 거리가 기준 값보다 큰 경우 상기 중앙 전극의 위치를 상기 하부 분리막의 일 단부에서 타 단부를 향하는 방향으로 보정하고, 기준 값보다 작은 경우 상기 중앙 전극의 위치를 상기 하부 분리막의 타 단부에서 일 단부를 향하는 방향으로 보정하는,단위 셀 제조 장치.
- 제1항에 있어서,상기 비전부는 복수의 단위 셀 각각의 상기 측정 값을 측정하며,상기 제어부는 상기 복수의 단위 셀 각각의 측정 값의 평균 값에 기초하여 상기 위치 보정 값을 연산하는,단위 셀 제조 장치.
- 제11항에 있어서,상기 제어부에서 상기 위치 보정 값의 연산에 사용되는 상기 복수의 단위 셀의 개수, 보정이 시작되는 위치 보정 값, 상기 위치 보정 값에 대한 실제 위치 보정 값의 백분율, 상기 위치 보정 값을 PLC(Programmable Logic Controller)로 전송하는 제1 PLC 전송 주기와 제2 PLC 전송 주기 및 상기 제2 PLC 전송 주기를 적용할 주기 중 적어도 하나는 설정 가능하고,상기 제2 PLC 전송 주기는 상기 단위 셀의 종류가 교체된 직후에 적용되는 주기이고,상기 제1 PLC 전송 주기는 상기 제2 PLC 전송 주기가 상기 제2 PLC 전송 주기를 적용할 주기 동안 적용된 이후에 적용되는 주기인,단위 셀 제조 장치.
- 제11항에 있어서,상기 제어부는 상기 위치 보정 값을 연산할 때, n번째 단위 셀의 측정 값 중 기준 범위 외의 측정 값 및 n-1번째 단위 셀의 측정 값과 기준 값 이상의 차이를 갖는 측정 값 중 적어도 하나를 연산의 기초가 되는 측정 값에서 제외시키는,단위 셀 제조 장치.
- 중앙 전극, 상기 중앙 전극의 일면 상에 배치되는 상부 분리막, 상기 중앙 전극의 타면 상에 배치되는 하부 분리막, 상기 상부 분리막 상에 배치되는 상부 전극 및 상기 하부 분리막 상에 배치되는 하부 전극을 포함하는 적층체를 형성하는 단계;상기 적층체의 상부 분리막 및 하부 분리막을 커팅하여 단위 셀을 형성하는 단계;단위 셀의 중앙 전극, 상부 분리막, 하부 분리막, 상부 전극 및 하부 전극 중 적어도 하나의 위치 정보를 포함하는 측정 값을 측정하는 단계;상기 측정 값에 기초하여, 상기 중앙 전극, 상기 상부 분리막, 상기 하부 분리막, 상기 상부 전극 및 상기 하부 전극 중 적어도 하나의 위치 보정 값을 연산하는 단계; 및상기 연산된 위치 보정 값에 기초하여, 상기 적층체를 형성하는 단계에서 상기 중앙 전극의 위치, 상기 적층체를 형성하는 단계에서 상기 상부 전극의 위치, 상기 적층체를 형성하는 단계에서 상기 하부 전극의 위치 및 상기 단위 셀을 형성하는 단계에서 상기 적층체의 커팅되는 위치 중 적어도 하나를 보정하는 단계; 를 포함하는,단위 셀 제조 방법.
- 제14항에 있어서,상기 측정 값을 측정하는 단계는 복수의 단위 셀 각각의 상기 측정 값을 측정하며,상기 위치 보정 값을 연산하는 단계는 상기 복수의 단위 셀 각각의 측정 값의 평균 값에 기초하여 상기 위치 보정 값을 연산하는 것인,단위 셀 제조 방법.
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