WO2012020480A1 - Positive and negative electrode plate stacking method and device - Google Patents
Positive and negative electrode plate stacking method and device Download PDFInfo
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- WO2012020480A1 WO2012020480A1 PCT/JP2010/063609 JP2010063609W WO2012020480A1 WO 2012020480 A1 WO2012020480 A1 WO 2012020480A1 JP 2010063609 W JP2010063609 W JP 2010063609W WO 2012020480 A1 WO2012020480 A1 WO 2012020480A1
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- positive
- electrode plate
- electrode plates
- negative electrode
- plates
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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
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0459—Cells or batteries with folded separator between 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
- H01M10/0404—Machines for assembling 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a method and apparatus for laminating positive and negative electrode plates, and in particular, a positive and negative electrode plate capable of laminating positive and negative electrode plates with high production efficiency while minimizing misalignment of positive and negative electrode plates regardless of terminal shape.
- the present invention relates to a lamination method and an apparatus therefor.
- an electrode plate laminating device that laminates a positive electrode plate and a negative electrode plate
- it is required to stack the positive electrode plate and the negative electrode plate with high positioning accuracy that minimizes the stacking deviation, in addition to the large production amount per unit time.
- the separators are 180 so that each terminal of the positive plate is exposed.
- first prior art a secondary battery manufacturing method in which negative plates punched into predetermined dimensions are alternately stacked.
- first prior art a secondary battery manufacturing method in which negative plates punched into predetermined dimensions are alternately stacked.
- the separator itself is a thin film, and it is extremely difficult to accurately arrange the positive and negative electrode plates having flexibility on the separator with a predetermined positioning accuracy. Even if the positive and negative electrode plates can be arranged with a predetermined positioning accuracy, the separator on which the positive and negative electrode plates are arranged performs an intermittent motion that repeats movement ⁇ stop ⁇ movement ⁇ . Therefore, it is extremely difficult to maintain the positioning accuracy of the positive and negative electrodes until the electrodes are welded.
- the positive electrode plate and the negative electrode plate received by the robot arm are accurately arranged with high positioning accuracy.
- the positive electrode plate 12 and the negative electrode plate 13 on the separator 15A are in a free state until they are welded by the welding portion 38 (see FIG. 4 of Patent Document 2). Therefore, it is considered difficult to weld the separators between the two electrode plates and the two open ends while maintaining a predetermined positioning accuracy with respect to the positive and negative electrode plates.
- the shape of the terminal of the electrode plate which takes out electricity is divided roughly into a horizontally long type (for example, this application, patent document 1) and a vertically long type (for example, patent document 2).
- each electrode plate is free in the vertical direction.
- the present invention has been made in view of the problems of the prior art, and the problem to be solved is that the positive and negative electrodes are positively and efficiently produced while minimizing the misalignment of the positive and negative electrode plates regardless of the terminal shape. It is an object of the present invention to provide a method for laminating positive and negative electrode plates capable of laminating negative electrode plates and an apparatus therefor.
- the method for laminating positive and negative electrode plates according to claim 1 for achieving the object is a laminating method of alternately laminating positive and negative electrode plates through separators, While covering and positioning with the separator and forming a welded portion between adjacent electrode plates, the coated electrode plate row is always pressed or sucked in the direction orthogonal to the conveying direction and sent out, while being alternately distributed and folded in a zigzag shape, It is characterized in that positive and negative plates are alternately stacked by alternately inserting “positioned different electrode plates” between adjacent electrode plates from both lateral directions.
- the positive and negative electrode plate stacking method is the same as that of the conventional stacking method, in which the coated positive electrode plate array is cut one by one at the welded portion to form a single coated positive plate.
- the coated positive electrode plate array in which the positioning accuracy is maintained is folded in a zigzag shape without misalignment, and at the same time, Similarly, a “positioned negative electrode plate” is inserted, and the positive and negative electrode plates necessary for battery assembly are stacked with high production efficiency and accurately. Therefore, in the above laminating method, in order to minimize laminating deviation, the positive electrode plate and the positive electrode plate When the coated positive electrode plate (positive electrode plate or the like) is sent out, the positive electrode plate or the like is sent out while being pressed in a direction intersecting the conveying direction by a roller or a rod, for example.
- the positioning accuracy is maintained by alternately sucking and sending the left and right sides while pressing the left and right rollers.
- the divided coated electrode plate array is folded in a zigzag manner, the positioning accuracy is maintained by folding the coated electrode plate array while pressing the end portion.
- a fold is formed in the welded portion so that the coated positive electrode plate array can be folded in a zigzag shape with high production efficiency, and the coated positive electrode plate array is folded in a zigzag shape with the fold as a fulcrum. did.
- the above laminating method is applied to the electrode plate of any terminal shape because the positive electrode plate or the negative electrode plate is sent out, sorted, and folded. I can do it.
- a crease is formed in the welded portion, the conveying direction of the coated electrode plate row is converted to a vertical direction, and the electrodes are alternately arranged by suction means from both lateral directions. It was decided to fold in a zigzag shape while aspirating and distributing left and right.
- the electrode plates already landed or laminated on the cradle are positioned by the fixing means.
- the electrode plate to be folded is pressed or sucked by the left and right rollers in the upper part and the fixing means in the lower part, for example, so that the positioning accuracy of the electrode plate is suitably maintained and folded without any misalignment. It becomes possible.
- the fold is a perforation.
- a crease in the welded portion it is conceivable to form a notch in the partition portion or a reduced thickness portion such as a through hole.
- a crease is formed by a through hole (perforation) from the viewpoint of forming a crease simply and accurately (without variation).
- the welding means for forming the welded portion moves with the adjacent electrode plates while holding the adjacent end portions of the adjacent electrode plates, and moves between the adjacent electrode plates.
- the positive electrode plate inevitably becomes a free state at the time of welding or when the positive electrode plate is sent out after welding. Therefore, there has been a problem that the positioning accuracy of the positive electrode plate cannot be maintained throughout the entire process. Therefore, in order to solve the above problem, in the method of laminating the positive and negative electrodes, the adjacent electrode plates are pressed when welding the electrode plates, and at the same time, the electrode plates and the accompanying plates are held while both adjacent electrode plates are pressed. It was decided to send out while welding between electrode plates.
- the electrode plates are positioned by the positioning means while the welding means returns to the original position.
- the welding means also moves together with the electrode plates and welds between the electrode plates.
- the positioning means restrains the rotation of the positive electrode plate and prevents the positive electrode plate from becoming temporarily free.
- the positive and negative electrode plate laminating apparatus wherein the positive and negative electrode plates are alternately laminated via separators.
- the pressure-contact feeding means that feeds the coated electrode plate array, which is coated and positioned with the separator and has a welded portion between adjacent electrode plates, always pressed or sucked in a direction orthogonal to the conveying direction, and the coated electrode plate array alternately on the left and right Distributing means that distributes to each other, folding means that folds in a zigzag manner, and insertion of a different polar plate that alternately inserts “positioned different polar plates” between the adjacent polar plates from both lateral directions and alternately stacks positive and negative plates Means are provided.
- the method for laminating positive and negative electrodes according to claim 1 can be suitably implemented.
- the laminating apparatus for positive and negative electrodes according to claim 9 comprises crease forming means for forming a crease in the welded portion and suction means for alternately sucking the coated electrode plate row from both lateral directions.
- the method for laminating positive and negative electrodes according to claim 2 can be suitably implemented.
- the distribution means alternately adsorbs the coated electrode plate rows left and right within 1/4 arc from the vicinity of the outlet, and distributes the coated electrode plate rows alternately left and right. Left and right rollers.
- the method for laminating positive and negative electrodes according to claim 3 can be suitably implemented.
- the laminating apparatus for positive and negative electrode plates according to claim 11 when the coated electrode plate row is folded in a zigzag shape, a fixing means for positioning the electrode plate already landed or laminated on the cradle is provided.
- the method for laminating positive and negative electrodes according to claim 4 can be suitably implemented.
- the crease forming means forms a perforation.
- the method for laminating positive and negative electrodes according to claim 5 can be suitably implemented.
- the method for laminating positive and negative electrodes according to claim 6 can be suitably implemented.
- positioning means for positioning the electrode plate is provided while the welding means returns to the original position.
- the method for laminating positive and negative electrodes according to claim 7 can be suitably implemented.
- the method for laminating positive and negative electrode plates of the present invention it is possible to laminate the positive and negative electrode plates with high production efficiency while minimizing the misalignment of the positive and negative electrode plates regardless of the terminal shape. That is, in the laminating method of the present invention, a crease is formed in each welded portion of the coated positive electrode plate array coated with the separator and welded between the electrode plates so that the positive and negative electrode plates can be laminated with high production efficiency.
- the coated positive electrode rows are distributed alternately to the left and right with the folds as fulcrums, and at the same time, the folds are folded into a zigzag shape as fulcrums, and the ⁇ positioned negative plates '' are inserted between these positive plates, and the correct number of sheets is required for battery assembly.
- the negative electrode plate was laminated. At that time, in order to minimize the stacking deviation, for example, after the positive electrode plate is cut out from the sheet material for the positive electrode plate with a predetermined dimension and covered and positioned with the separator, the initial positioning accuracy is always maintained.
- the positive electrode plate is sent out while being pressed in a direction perpendicular to the conveying direction, and when the coated positive electrode plate row is distributed to the left and right, the coated positive electrode plate row is distributed to the left and right while being alternately sucked by left and right rollers.
- the pedestal is lowered while the stacked positive and negative electrode plates are pressed by the left and right pressing devices to receive the positive electrode plate or the negative electrode plate.
- the method for laminating the positive and negative electrode plates of the present invention sends out the positive electrode plate or the negative electrode plate so that the positioning accuracy of the positive electrode plate and the negative electrode plate is always maintained throughout the entire process, and distributes and folds the positive and negative electrode plates.
- the positive / negative plate laminating apparatus of this invention can implement
- FIG. 1 and 2 are main part explanatory views showing a positive and negative electrode plate laminating apparatus 100 of the present invention.
- this positive and negative electrode plate laminating apparatus 100 after a certain positive electrode plate (P) is cut out from the positive electrode plate sheet material (PS) with a predetermined dimension and positioned once with respect to the separator (S), the negative electrode plate (N) Until the layers are alternately stacked, the positive electrode plate (P) is configured to always maintain the initial positioning accuracy. Similarly, the negative electrode plate (N) is also configured so that the initial positioning state is always maintained after it is once positioned.
- the positive electrode plate (P) is positioned once, it is sent out in the horizontal direction while being pressed in the direction orthogonal to the conveying direction by the pressure-feeding means (roller or rod), and left and right rollers (sorting means, sorting suction roller 13) ) And left and right alternately while being suctioned, and one end is sucked by the left and right rollers (sorting means, sorting suction roller 13) and the other end is fixed by fixing means (folding means, left and right integrated presser claws 15L, 15R) In the pressed state, it is accurately folded in a zigzag shape with the perforation (fold) as a fulcrum, and at the same time, the negative electrode plate (N) positioned by the different polar plate insertion means (left / right negative plate insertion arms 16L, 16R) Is inserted between the positive electrode plates, and the positive electrode plate (P) and the negative electrode plate (N) are laminated with high production efficiency.
- the configuration will be described
- the positive and negative electrode laminating apparatus 100 includes a positive electrode reel 1 on which a positive electrode plate sheet material (PS) is wound, a positive electrode feed roller 2 that sends out the positive electrode sheet material (PS), and a positive electrode plate sheet material ( PS) is cut to a predetermined length to form a positive electrode plate (P), and upper and lower separator reels 4 and 5 for supplying a separator (S) for covering the positive electrode plate (P), A positive plate feed roller 6 that feeds the positive plate (P) while being coated with the separator (S), a welding heater 7 that welds between adjacent positive plates to form a welded portion on the separator (S), and a welding heater 7 Positioning plates 8a and 8b that hold the positive electrode plate (P) and restrain the rotation of the positive electrode plate (P) and welding on the separator (S) while the motor is free (while away from the positive electrode plate (P)) A perforation needle 9 for forming a perforation (fold) in the portion, and a positive electrode plate (
- the holding roller 12 and the distribution suction roller 13 that changes the conveying direction of the coated positive electrode plate array of the positive electrode plate (P) from the horizontal direction to the vertical direction and distributes alternately the left and right sides while pressing and feeding the coated positive electrode plate array, and descending
- the integrated lifter 14 that receives the positive electrode plate (P) or the negative electrode plate (N) and the positive electrode plate (P) and the negative electrode plate (N) are alternately stacked to prevent the stacking deviation by pressing the electrode plate.
- the left and right negative electrode cutters 19L and 19R which are made by cutting the material (NS) into a predetermined length to form the negative electrode plate (N), and the negative electrode plate (N) are positioned to the left and right negative electrode plate insertion arms 16L and 16R.
- the left and right negative electrode plate lifters 20L and 20R to be set, and a tape applying device 21 (FIG. 2) for applying a tape (T) to the laminated positive and negative electrode plates (FIG. 4) are provided.
- the operation of the welding heater 7 will be described later with reference to FIGS. 5-6.
- a web controller (WC) is provided on each downstream side of the positive reel 1, the upper / lower separator reels 4, 5 and the left / right negative reels 17L, 17R. By these controllers, the positive plate (P) and the separator are provided. The relative position between (S) and the relative position between the positive electrode plate (P) and the negative electrode plate (N) are controlled to be within a predetermined range.
- the positive electrode plate feed roller 6 presses and feeds the cut positive electrode plate (P) while being covered with the separator (S) from above and below, and restrains the rotation of the positive electrode plate (P) during welding.
- the welding heater 7 is a so-called heat sealer that forms a welded portion by welding a separator (S) between positive electrode plates in the vertical direction.
- the details will be described later with reference to FIGS. 5 to 6.
- two heaters fixed at a fixed position move in the axial direction to apply the separator (S) from the vertical direction for a certain time. Rather than contacting and heating, the two heaters contact and heat the separator (S) from above and below, move in a predetermined section (pitch) with the positive electrode plate (P) while maintaining that state, and again It is configured to return to the original position.
- the positioning plates 8a and 8b come into contact with the positive electrode plate (P) and restrain the rotation of the positive electrode plate (P) while the welding heater 7 returns to the original position.
- the sewing needle 9 forms a perforation (P.L. in FIG. 3) between the electrode plates of the positive electrode plate (P).
- the perforated positive electrode plate row of the positive electrode plate (P) is alternately distributed to the left and right by the perforation and the distribution suction roller 13 and the like, and further distributed by the perforation and the left and right integrated presser claws 15L and 15R. It is possible to accurately fold the coated positive electrode plate row in a zigzag shape without stacking misalignment, and as a result, it is possible to stack the positive electrode plate (P) and the negative electrode plate (N) with high production efficiency without stacking misalignment.
- the pressing roller 10 is a mechanism that sends out the positive electrode plate (P) while pressing the positive electrode plate (P) from above and below to suppress the rotation of the positive electrode plate (P).
- This feed mechanism it is possible to maintain the positioning accuracy of the positive electrode plate (P) until the positive electrode plate (P) is covered with the separator (S) and positioned and then folded (suppresses the free state). It becomes.
- the presser roller 12 functions in the same manner in cooperation with the sorting suction roller 13.
- the distribution suction roller 13 will be described later in detail with reference to FIG. 7, and is composed of a pair of left and right rollers.
- Each roller has a double cylindrical structure including an outer cylinder and an inner cylinder.
- the inner cylinder is rotationally locked while it is free of rotation.
- a large number of through holes are provided in the outer peripheral surface of the outer cylinder, while an opening is formed in the circumferential direction of a quarter arc from the vicinity of the outlet of the inner cylinder, and a vacuum channel is formed inside. Therefore, when the positive electrode plate (P) passes through the opening, in combination with the effect of the perforation, the positive electrode plate (P) is sucked by the left and right rollers and distributed to the left and right. It is sent out while adsorbed on the outer cylindrical surface. Therefore, the positioning accuracy is suitably maintained while the positive electrode plate (P) is sent out after being distributed.
- the integrated lifter 14 is a pedestal that is movable in the axial direction and receives positive and negative plates that are alternately stacked.
- the positive electrode plate (P) When receiving the positive electrode plate (P), the positive electrode plate (P) is received while descending.
- the “positioned negative electrode plate (N)” can always be laminated on the positive electrode plate (P) from the left or right direction at the same horizontal position.
- the integrated lifter 14 receives the negative electrode plate (N) while being lowered by the thickness of the positive electrode plate (P). Further, in order to prevent stacking misalignment, the positive and negative electrode plates are received while sucking the stacked positive and negative electrode plates.
- the left and right integrated presser claws 15L and 15R serve as guides for folding the positive electrode plate (P) by lightly pressing the positive electrode plate (P) when the positive electrode plate (P) is folded.
- the negative electrode plate (N) when the negative electrode plate (N) is inserted, the laminated electrode plate is pressed to prevent the misalignment between the positive electrode plate (N) and the negative electrode plate (N).
- the left and right negative electrode plate insertion arms 16L, 16R move the “positioned negative electrode plate (N)” on the positive electrode plate (P) folded in a zigzag shape to move from left or right to the horizontal direction. Laminate accurately without any problems. Therefore, while the left and right negative electrode plate insertion arms 16L and 16R receive the negative electrode plate (N) from the left and right negative electrode plate lifters 20L and 20R and are stacked on the positive electrode plate (P), the negative electrode plate (N) is displaced. The negative electrode plate (N) is sucked so as not to rotate, and the positioning accuracy is maintained.
- the left and right negative plate lifters 20L and 20R are cut out from the negative plate material (NS) to a predetermined size, and the “positioned negative plate (N)” is moved upward to move the left and right negative plate insertion arms. Set to 16L and 16R, respectively. Therefore, the left and right negative electrode plate lifters 20L and 20R receive the negative electrode plate (N), and set the left and right negative electrode plate insertion arms 16L and 16R so that the negative electrode plate (N) is not displaced or rotated. N) Aspirate and position.
- the integrated lifter 14 is fixed by the left and right integrated presser claws 15L and 15R as shown in FIG.
- the tape applicator 21 attaches four places of the laminated electrode plate along the thickness direction with the tape (T), and fixes the laminated state.
- the laminated electrode plate fixed with the tape (T) is conveyed to the next process by a forklift.
- FIG. 3 is an explanatory view showing a coated positive electrode plate array 200 according to the present invention.
- E electrolyte
- PS coated cathode plate sheet material
- the perforation (P.L.) is formed so as to pass through the center of the welded portion (H) and vertically between the electrode plates, but may be formed only on the welded portion (H). Further, instead of the perforation (P.L.), a crease such as a rupture portion or a thin portion (thinned portion) may be formed.
- FIG. 4 is an explanatory view showing a laminated positive and negative electrode plate 300 according to the present invention.
- FIG. 4 (a) is a front view thereof
- FIG. 4 (b) is a sectional view taken along the line AA.
- This laminated positive and negative electrode plate 300 distributes the positive electrode plate (P) and the negative electrode plate (N) necessary for battery assembly alternately and left and right while maintaining the positioning state of the positive electrode plate (P) by the distribution suction roller 13.
- the left and right negative electrode insertion arms 16L and 16R are used to move the “positioned negative electrode plate (N)” from the left direction or the right direction to the horizontal direction and stack it on the positive electrode plate (P), and finally with the tape (T) along the thickness direction. Four places are fixed.
- FIG. 5 is an explanatory view showing the operation of the positive and negative electrode plate laminating apparatus 100 of the present invention from when the sheet material for positive electrode plates (PS) is sent out until the positive electrode plates are thermally welded.
- the positive electrode plate (P) and the negative electrode plate (N) are always constrained from rotating after being positioned once until they are laminated (a state in which they are always free).
- the positive electrode plate (P) and the negative electrode plate (N) are stacked with high production efficiency without stacking misalignment.
- a process from when the positive electrode sheet material (PS) is fed out until the positive electrode plates are thermally welded will be briefly described.
- the positive electrode plate (P) is numbered in chronological order.
- the positive electrode feed roller 2 starts to feed out the positive electrode plate sheet material (PS).
- the positive plate P n is moved by the positioning plate 8a
- the positive plate P n-1 is moved by the positioning plate 8b
- the positive plate P n-2 is moved by the pressing roller 10
- the positive plate P n-3 is pressed by the pressing roller 12.
- the plates P n-4 are respectively positioned by the distribution suction rollers 13 and 13 and the right integrated presser claw 15R (not shown).
- the welded portion (H) between the positive electrode plate P n-3 and the positive electrode plate P n- 2 is cut by the separator cutter 11, and the positive electrode plate P n-3 is the last in the laminated positive and negative electrode plates.
- the positive electrode plate P n-2 becomes the positive electrode plate (P) which is first folded and stacked in the next stacked positive and negative electrode plates.
- the welding heater 7 has a structure including a heater 7a at the center and two presser bars 7b on both sides thereof.
- welding of the separator (S) between the positive electrode plates is performed by two heaters 7a arranged on the upper and lower sides, and the presser bar 7b is disposed adjacent to the positive electrode while the heater 7a melts the separator (S).
- the positioning of the adjacent positive electrode plates (P, P) is held across the adjacent end portions of the plates (P, P) (rotation is constrained).
- the presser rods 7c and 7c have a structure in which the heater 7a is removed from the welding heater 7, and the adjacent positive electrode plates (P, P) adjacent to the adjacent positive electrode plates (P, P) in cooperation with the welding heater 7 sandwich the adjacent positive electrode plates. The positioning state of (P, P) is maintained.
- FIG. 5B shows a state in which the positive electrode feed roller 2 has sent out the positive electrode sheet material (PS) by a predetermined length. Even in this state, all the positive plates (P) on the conveyor are positioned.
- the positive electrode plate P n-3 is in a state of being positioned by being sucked by the sorting suction roller 13 and pressed by the left integrated presser claw 15L (not shown).
- the welding heater 7 and the sewing needle 9 are in a state of being separated from the separator (S).
- FIG. 5 (c) shows that the presser bars 7b and 7b sandwich the end of the positive electrode sheet material (PS) and the positive cutter 3 cuts the positive electrode sheet material (PS) to form the positive electrode plate Pn + 1 .
- the heater 7a welds the separator (S) between the positive electrode plate Pn and the positive electrode plate Pn + 1 .
- the positive electrode plate P n + 1 is positioned by the presser bar 7b and the positive electrode plate feed roller 6, the positive electrode plate Pn is positioned by the presser bars 7b and 7c, and the positive electrode plate Pn-1 is positioned by the presser bar 7c. Further, the positive electrode plate P n-2 is positioned by the presser roller 10.
- the perforation needle 9 forms a perforation at the welded portion (H).
- FIG. 6 is an explanatory view showing the operation of the positive and negative electrode plate laminating apparatus 100 of the present invention from the end of heat welding between the positive electrodes to the next end of heat welding.
- the two heaters 7a contact and heat the separator (S) from above and below, and the presser bars 7b on both sides press the adjacent ends of the positive electrode plate Pn and the positive electrode plate Pn + 1 .
- the state where the positive electrode plate moves in a predetermined section (pitch) is shown.
- the positive electrode plate P n-1 is positioned state by the presser bar 7c and the pressing roller 10 is maintained.
- the positive electrode plate P n-2 is held in the positioning state by the presser roller 12 and the distribution suction roller 13.
- FIG. 6B shows a state in which the welding heater 7 returns to the initial position.
- the positive plate P n + 1 is positioned by the positioning plate 8a
- the positive plate P n is positioned by the positioning plate 8b.
- the positive electrode plate P n-1 is positioned by the presser roller 10
- the positive electrode plate Pn is positioned by the presser roller 12 and the sorting suction roller 13, respectively.
- a positive electrode sheet material (PS) having a predetermined length is fed by the positive electrode feed roller 2 and positioned by the positive electrode plate feed roller 6.
- PS positive electrode sheet material
- FIG. 6C shows a state where a new positive electrode plate P n + 2 is cut out and the welding heater 7 starts to be welded between the electrode plates. At this time, a perforation is formed in the welded portion (H) by the sewing needle 9.
- the positive electrode plate P n + 2 is pressed by the positive electrode plate feed roller 6 and the presser bar 7b, the positive electrode plate Pn + 1 is pressed by the presser bars 7b and 7c, the positive electrode plate Pn is pressed by the presser bar 7c, and the positive electrode plate Pn-1 is pressed.
- the positive plate P n-2 is positioned by the roller 10 by the pressing roller 12 and the distribution suction roller 13, respectively.
- FIG. 6 (d) as in FIG. 6 (a), the two heaters 7a contact and heat the separator (S) from above and below, and the presser bars 7b on both sides are the positive plate Pn + 1 and the positive plate.
- a state is shown in which the positive electrode plate moves in a predetermined section (pitch) while pressing the adjacent end portion of P n + 2 .
- the other end of the positive electrode plate P n + 1 is held by the presser bar 7c, and the positive electrode plate Pn is held by the presser bar 7c and the presser roller 10.
- the positive plate P n-1 is held in the positioning state by the presser roller 12 and the sorting suction roller 13
- the positive plate Pn-2 is held in the positioning state by the sorting suction roller 13 and the right integrated presser claw 15R (not shown).
- the positive electrode plate (P) is cut from the positive electrode plate sheet material (PS) and covered with the separator (S) until it is distributed to the left and right by the distribution suction roller 13.
- the presser bar 7b, the presser bar 7c, the positioning plates 8a and 8b, the presser rollers 10 and 12, or the distribution suction roller 13 are preferably positioned or the positioning state is maintained.
- FIG. 7 is an explanatory diagram showing a sorting suction roller, an integrated lifter, an integrated presser claw, and a negative electrode plate insertion arm according to the present invention.
- the distribution suction roller 13 includes two rollers 13L and 13R, and each roller has a double cylindrical structure.
- the outer cylinders 13-1L and 13-1R can rotate, but the inner cylinders 13-2L and 13-2R cannot rotate.
- a plurality of through holes 13-3L and 13-3R are formed radially and at equal intervals in the outer cylinder, and vacuum channels 13-4L and 13-4R are formed in the inner cylinder, respectively.
- the outer cylinders 13-1L and 13-1R corresponding to the range extending from the vicinity of the roller outlet portion to a quarter arc (for example, 80 ° ⁇ L , ⁇ R ⁇ 160 °) become suction surfaces and pass through them.
- the positive electrode plate (P) is attracted to any one of the suction surfaces and is alternately distributed to the left and right.
- the integrated lifter 14 is a cradle that is movable in the axial direction for receiving the positive electrode plate (P) and the negative electrode plate (N).
- a vacuum channel is formed inside, and a suction port is formed on the receiving surface, so that the laminated positive and negative electrode plates can be sucked.
- the integrated lifter 14 receives the positive plate (P) while being lowered, and on the other hand, when receiving the negative plate (N), the integrated lifter 14 is received by being lowered by the thickness of the positive plate (P). ing.
- the left and right presser claws 15L and 15R are fixing means for pressing the laminated positive and negative plates, and the folded positive plate (P) is folded at the perforation (fold). It also functions as a guide.
- the left negative electrode plate insertion arm 16L is laminated on the positive electrode plate (P) folded on the integrated lifter 14 while sucking the negative electrode plate (N) so that the positioning state is maintained. Therefore, a vacuum channel is formed inside, and a suction port is formed on the surface.
- the right negative plate insertion arm 16R has the same structure.
- the positive electrode plate (P) is distributed alternately left and right by the distribution suction roller 13 with the perforation (fold) as a fulcrum, and then sucked by any roller, received by the integrated lifter 14, and While being pressed and guided by the left and right integrated presser claws 15L and 15R, the perforation is accurately folded at the fulcrum.
- the negative electrode plate (N) is accurately placed on the positive electrode plate (P) so that the positioning accuracy is maintained by the left and right negative electrode plate insertion arms 16L and 16R. Therefore, according to the positive and negative electrode plate laminating apparatus 100, it is possible to laminate the positive and negative electrode plates with high production efficiency while suppressing the misalignment of the positive and negative electrode plates.
- the electrode plate laminating method and apparatus of the present invention can be applied to a battery manufacturing method having a laminated structure of a positive electrode plate and a negative electrode plate.
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Abstract
Description
正負極板の積層装置としては、例えば、セパレータの巻き出し方向に対して直角に複数枚の正極板をセパレータ上に整列させて載せたあと、正極板の各端子が露出するようにセパレータを180度折り返して正極板を被覆し、正極板の各極板間に対しヒートシール機によって間欠的に溶着部(2箇所)を形成し、その後その溶着部間をカッタによって切断し袋状被覆正極板とし、次に所定の寸法に打ち抜かれた負極板を交互に積層する二次電池の製造方法(以下、「第1従来技術」という。)が知られている。(例えば、特許文献1を参照。)。
ところで、上記積層方法のように、正極板または負極板の何れか一方を被覆し、一枚ずつ個別に切断しその上に無被覆の異極板を一枚ずつ個別に積層するのではなく、先ずセパレータ上に正極板と負極板を交互にシリアルに配列し、次に別のセパレータで正負極板列を上方から被覆し、次に両極板間および両開口端の各セパレータを溶着すると共に各極板間の溶着部にミシン目を形成し、次に電池組立に必要枚数の正負極板を一纏めに切断し、切断した正負極板列を斜面に沿って降下させてミシン目で折り畳みながら正負極板を積層する二次電池の製造方法およびその積層装置(以下、「第2従来技術」という。)が知られている(例えば、特許文献2を参照。)。 In an electrode plate laminating device that laminates a positive electrode plate and a negative electrode plate, it is required to stack the positive electrode plate and the negative electrode plate with high positioning accuracy that minimizes the stacking deviation, in addition to the large production amount per unit time. ing.
As a stacking apparatus for positive and negative electrodes, for example, after a plurality of positive plates are aligned and placed on the separator at right angles to the unwinding direction of the separator, the separators are 180 so that each terminal of the positive plate is exposed. Folded to cover the positive electrode plate, and intermittently form welds (two places) between the positive electrode plates with a heat sealer, and then cut between the welds with a cutter to form a bag-like coated positive plate Then, a secondary battery manufacturing method (hereinafter, referred to as “first prior art”) in which negative plates punched into predetermined dimensions are alternately stacked is known. (For example, see Patent Document 1).
By the way, as in the above laminating method, either one of the positive electrode plate or the negative electrode plate is coated, and the individual non-coated different electrode plates are individually laminated one by one by cutting each piece individually. First, positive and negative electrode plates are alternately and serially arranged on the separator, and then the positive and negative electrode plate rows are covered from above with another separator, and then the separators between both electrode plates and at both open ends are welded and Form perforations at the welds between the electrode plates, then cut the number of positive and negative electrode plates required for battery assembly together, lower the cut positive and negative electrode plate along the slope, and fold it at the
しかし、袋状に被覆された正極板列(シリアル列)から一枚ずつ切断し、そして一枚ずつ正極板と負極板を互い違いに交互に積層することは、時間を要し生産効率上あまり好ましくない。
極板間の溶着部にミシン目を形成する上記第2従来技術では、両極板間の溶着部によって、各極板は横方向の回動が拘束され、更に両開口端の溶着部によって各極板は縦方向の回動が拘束されるため、極板間を溶着した後は、正負極板は溶着部によって位置決め精度が保持された状態になり、溶着部に形成されたミシン目の効果により、切断した正負極板列を高速に正確に折り畳むことが可能となる。
しかし、セパレータ自体、薄い膜であり、そのセパレータ上に可撓性を有する正負極板を所定の位置決め精度で正確に配列することは、極めて難しい。また、仮に正負極板を所定の位置決め精度で配列することが出来た場合であっても、正負極板が配列されたセパレータは移動→停止→移動→・・・を繰り返す間欠運動をしているため、極板間を溶着するまでの間、正負極板の位置決め精度を維持することは同様に極めて難しい。更には、ロボットアームが受け取る正極板および負極板に対しても高い位置決め精度で正確に配列されている必要がある。上記第2従来技術の場合、例えば、セパレータ15A上の正極板12および負極板13は、溶着部38によって溶着されるまでの間フリーな状態にある(特許文献2の図4を参照。)。従って、正負極板に対し所定の位置決め精度が保持された状態で両極板間および両開口端のセパレータを溶着することは難しいものと考えられる。
ところで、電気を取り出す極板の端子の形状は、横長タイプ(例えば、本願、特許文献1)と縦長タイプ(例えば、特許文献2)に大別される。縦長タイプの場合は、構造上、4辺近傍のセパレータを溶着することが可能である。一方、横長タイプの場合は、構造上、せいぜい端子側を除く3辺近傍のセパレータを溶着するにとどまる。従って、端子の形状が横長タイプで、隣接極板間しか溶着されない被覆極板列では、各極板は縦方向に対しフリーな状態である。もし、この横長タイプの被覆極板列に対し「溶着部にミシン目を形成し被覆極板列を斜面に沿って降下させてジグザク状に折り畳む」上記第2従来技術を適用した場合、正負極板の積層ズレを最小限に抑制してジグザク状に折り畳むことは極めて難しいと考えられる。つまり、上記第2従来技術は、端子形状が横長タイプで隣接極板間しか溶着されない被覆極板列に対して、積層ズレを最小限に抑制して正負極板を積層することは極めて難しいものと考えられる。
また、上記第2従来術では、負極板についてもセパレータで被覆する必要があるため、通常の製造方法に比べ、2倍のセパレータ量を使用することになり、材料コスト更には電池の性能の観点からあまり好ましくないものと考えられる。
従って、本発明は、かかる従来技術の問題点に鑑みなされたものであって、解決しようとする課題は、端子形状に拘わらず正負極板の積層ズレを最小限に抑制しながら生産効率良く正負極板を積層することが可能な正負極板の積層方法及びその装置を提供することである。 Covering the positive electrode plate in a bag shape as in the first prior art described above is because the rotation in the horizontal direction of the positive electrode plate is completely restricted and the rotation in the vertical direction is also restricted to some extent. This is effective in preventing the misalignment (position) of the film.
However, it is time-consuming and less preferable in terms of production efficiency to cut one by one from the positive electrode plate row (serial row) coated in a bag shape and to alternately stack the positive and negative electrode plates one by one alternately. Absent.
In the second prior art in which a perforation is formed in the welded portion between the electrode plates, each electrode plate is constrained from rotating in the lateral direction by the welded portion between the electrode plates, and each electrode is further separated by the welded portion at both opening ends. Since the vertical rotation of the plates is constrained, the positive and negative plates are maintained in positioning accuracy by the welded portions after welding between the electrode plates, and the effect of the perforations formed in the welded portions Thus, it becomes possible to fold the cut positive and negative electrode plate rows accurately at high speed.
However, the separator itself is a thin film, and it is extremely difficult to accurately arrange the positive and negative electrode plates having flexibility on the separator with a predetermined positioning accuracy. Even if the positive and negative electrode plates can be arranged with a predetermined positioning accuracy, the separator on which the positive and negative electrode plates are arranged performs an intermittent motion that repeats movement → stop → movement →. Therefore, it is extremely difficult to maintain the positioning accuracy of the positive and negative electrodes until the electrodes are welded. Furthermore, it is necessary that the positive electrode plate and the negative electrode plate received by the robot arm are accurately arranged with high positioning accuracy. In the case of the second prior art, for example, the
By the way, the shape of the terminal of the electrode plate which takes out electricity is divided roughly into a horizontally long type (for example, this application, patent document 1) and a vertically long type (for example, patent document 2). In the case of the vertically long type, it is possible to weld separators in the vicinity of the four sides due to the structure. On the other hand, in the case of the horizontally long type, the separators in the vicinity of the three sides excluding the terminal side are only welded due to the structure. Therefore, in the coated electrode plate array in which the terminal shape is a horizontally long type and is welded only between adjacent electrode plates, each electrode plate is free in the vertical direction. If the above-mentioned second prior art is applied to this horizontally long coated electrode plate array, “a perforation is formed in the welded part and the coated electrode plate array is lowered along the slope and folded in a zigzag shape” It is considered extremely difficult to fold in a zigzag shape while minimizing the stacking deviation of the plates. In other words, in the second prior art, it is extremely difficult to stack positive and negative electrodes while minimizing the stacking deviation with respect to a coated electrode plate array whose terminal shape is a horizontally long type and is welded only between adjacent electrode plates. it is conceivable that.
In the second conventional technique, since the negative electrode plate also needs to be coated with a separator, the amount of separator used is twice as much as that of a normal manufacturing method, and the material cost and the viewpoint of battery performance are also required. Therefore, it is considered that it is not so preferable.
Therefore, the present invention has been made in view of the problems of the prior art, and the problem to be solved is that the positive and negative electrodes are positively and efficiently produced while minimizing the misalignment of the positive and negative electrode plates regardless of the terminal shape. It is an object of the present invention to provide a method for laminating positive and negative electrode plates capable of laminating negative electrode plates and an apparatus therefor.
前記セパレータで被覆・位置決めし隣接極板間に溶着部を形成した被覆極板列を、常に搬送方向に直交する方向に圧接または吸引して送り出しながら、左右交互に振り分けジグザク状に折り畳みながら、前記隣接極板間に「位置決めされた異極板」を両横方向から交互に挿入して正負極板を交互に積層することを特徴とする。
上記正負極板の積層方法は、従来の積層方法に見られた、被覆正極板列を溶着部で一枚ずつ極板毎に切断して、単一の被覆正極板とした後に、その被覆正極板上に「位置決めされた負極板」を一枚ずつ交互に積層する積層方法とは異なり、位置決め精度が保持された被覆正極板列を積層ズレなくジグザク状に折り畳むのと同時に、これら正極板間に同じく「位置決めされた負極板」を挿入して電池組立に必要枚数の正負極板を生産効率良くかつ正確に積層する方法である。
そのため、上記積層方法では、積層ズレを最小限に抑制するために、正極板をセパレータで被覆し一旦位置決めした後は、積層されるまでの間その位置決め精度が保持されるように、正極板および被覆正極板(正極板等)を送り出す際は、正極板等を例えばローラ又はロッドによって搬送方向に対し交差する方向に圧接しながら送り出すようにした。また、後述するように、被覆正極板列を左右交互に振り分ける際は、左右ローラ等によって圧接しながら左右交互に吸引して送り出すようにして、その位置決め精度が保持されるようにした。また、振り分けられた被覆極板列をジグザクに折り畳む際も、端部を押えながら折り畳むようにしてその位置決め精度が保持されるようにした。
更に、上記積層方法では、生産効率良く被覆正極板列をジグザク状に折り畳むことが出来るように、溶着部に折り目を形成して、その折り目を支点に被覆正極板列をジグザク状に折り畳むようにした。
これにより、正負極板の積層ズレを最小限に抑制しながら生産効率良く正負極板を積層することが可能となる。また、上記積層方法では全工程を通して正極板および負極板の位置決め精度が常に保持されるため、上記積層方法は正極板または負極板を送り出し、振り分け、折り畳むため、あらゆる端子形状の極板に対し適用することが出来る。 The method for laminating positive and negative electrode plates according to
While covering and positioning with the separator and forming a welded portion between adjacent electrode plates, the coated electrode plate row is always pressed or sucked in the direction orthogonal to the conveying direction and sent out, while being alternately distributed and folded in a zigzag shape, It is characterized in that positive and negative plates are alternately stacked by alternately inserting “positioned different electrode plates” between adjacent electrode plates from both lateral directions.
The positive and negative electrode plate stacking method is the same as that of the conventional stacking method, in which the coated positive electrode plate array is cut one by one at the welded portion to form a single coated positive plate. Unlike the laminating method in which the “positioned negative electrode plates” are alternately laminated on the plate one by one, the coated positive electrode plate array in which the positioning accuracy is maintained is folded in a zigzag shape without misalignment, and at the same time, Similarly, a “positioned negative electrode plate” is inserted, and the positive and negative electrode plates necessary for battery assembly are stacked with high production efficiency and accurately.
Therefore, in the above laminating method, in order to minimize laminating deviation, the positive electrode plate and the positive electrode plate When the coated positive electrode plate (positive electrode plate or the like) is sent out, the positive electrode plate or the like is sent out while being pressed in a direction intersecting the conveying direction by a roller or a rod, for example. Further, as will be described later, when the coated positive electrode plate rows are alternately arranged on the left and right sides, the positioning accuracy is maintained by alternately sucking and sending the left and right sides while pressing the left and right rollers. In addition, when the divided coated electrode plate array is folded in a zigzag manner, the positioning accuracy is maintained by folding the coated electrode plate array while pressing the end portion.
Further, in the above laminating method, a fold is formed in the welded portion so that the coated positive electrode plate array can be folded in a zigzag shape with high production efficiency, and the coated positive electrode plate array is folded in a zigzag shape with the fold as a fulcrum. did.
This makes it possible to stack the positive and negative electrode plates with high production efficiency while minimizing the stacking deviation of the positive and negative electrode plates. In addition, since the positioning accuracy of the positive electrode plate and the negative electrode plate is always maintained throughout the above-described laminating method, the above laminating method is applied to the electrode plate of any terminal shape because the positive electrode plate or the negative electrode plate is sent out, sorted, and folded. I can do it.
上記正負極板の積層方法では、溶着部の折り目と吸引効果によって、位置決め精度を保持しながら左右に振り分けることが可能となり、その結果、正負極板の積層ズレを抑制しながら生産効率良くジグザク状に折り畳むことが可能となる。 In the laminating method of the positive and negative electrode plates according to
In the above-described method of laminating the positive and negative electrode plates, it is possible to distribute them to the left and right while maintaining positioning accuracy by the crease and suction effect of the welded portion, and as a result, the zigzag shape with high production efficiency while suppressing the misalignment of the positive and negative electrode plates. Can be folded.
上記正負極板の積層方法では、吸着範囲を上記範囲に設定することにより、極板が折り畳まれる間も極板が上記ローラによって吸引され、位置決め精度が好適に保持されるようになる。 4. The method of laminating positive and negative electrode plates according to
In the method of laminating the positive and negative electrodes, by setting the adsorption range to the above range, the electrode plate is attracted by the roller while the electrode plate is folded, and the positioning accuracy is suitably maintained.
上記正負極板の積層方法では、折り畳まれる極板は、上方では上記左右ローラによって、下方では固定手段で例えば押え又は吸引されるため、極板の位置決め精度が好適に保持され、積層ズレなく折り畳むことが可能となる。 In the method of laminating the positive and negative electrode plates according to
In the method of laminating the positive and negative electrodes, the electrode plate to be folded is pressed or sucked by the left and right rollers in the upper part and the fixing means in the lower part, for example, so that the positioning accuracy of the electrode plate is suitably maintained and folded without any misalignment. It becomes possible.
一般に溶着部の折り目として、仕切り部に切り欠き、或いは貫通孔等の減肉部を形成することが考えられる。
上記正負極板の積層方法では、簡易かつ正確に(バラツキなく)折り目を形成することの観点から、貫通穴(ミシン目)によって折り目を形成する。 In the method for laminating positive and negative electrode plates according to
Generally, as a crease in the welded portion, it is conceivable to form a notch in the partition portion or a reduced thickness portion such as a through hole.
In the method for laminating the positive and negative electrode plates, a crease is formed by a through hole (perforation) from the viewpoint of forming a crease simply and accurately (without variation).
定位置に固定した従来の溶着手段の場合、溶着時、或いは溶着後に正極板を送り出す時に、必然的に正極板が一時的にフリーな状態になる。そのため、全工程を通して正極板の位置決め精度を保持することが出来ないという問題があった。
そこで、上記正負極板の積層方法では、上記問題を解決するために、極板間を溶着する際は隣接極板を押えることとし、同時に両隣接極板を押えた状態のまま極板と伴に移動して極板間を溶着しながら送り出すこととした。 In the laminating method of the positive and negative electrode plates according to
In the case of the conventional welding means fixed at a fixed position, the positive electrode plate inevitably becomes a free state at the time of welding or when the positive electrode plate is sent out after welding. Therefore, there has been a problem that the positioning accuracy of the positive electrode plate cannot be maintained throughout the entire process.
Therefore, in order to solve the above problem, in the method of laminating the positive and negative electrodes, the adjacent electrode plates are pressed when welding the electrode plates, and at the same time, the electrode plates and the accompanying plates are held while both adjacent electrode plates are pressed. It was decided to send out while welding between electrode plates.
上記正負極板の積層方法では、溶着手段も極板と伴に移動して極板間を溶着するが、後続の隣接極板間を溶着する際は、元の位置に戻る必要がある。
そこで、上記正負極板の積層方法では、溶着手段が元の位置へ戻る間、位置決め手段が正極板の回動を拘束し正極板が一時的にフリーになることを防止するようにした。 In the method of laminating the positive and negative electrode plates according to
In the method of laminating the positive and negative electrodes, the welding means also moves together with the electrode plates and welds between the electrode plates. However, when welding the subsequent adjacent electrode plates, it is necessary to return to the original position.
Therefore, in the above-described method of laminating the positive and negative electrodes, while the welding means returns to the original position, the positioning means restrains the rotation of the positive electrode plate and prevents the positive electrode plate from becoming temporarily free.
前記セパレータで被覆・位置決めし隣接極板間に溶着部を形成した被覆極板列を、常に搬送方向に直交する方向に圧接または吸引して送り出す圧接送り手段と、前記被覆極板列を左右交互に振り分ける振分け手段と、ジグザク状に折り畳む折り畳み手段と、前記隣接極板間に「位置決めされた異極板」を両横方向から交互に挿入して正負極板を交互に積層する異極板挿入手段を具備したことを特徴とする。
上記正負極板の積層装置では、上記請求項1に記載の正負極板の積層方法を好適に実施することが出来る。 The positive and negative electrode plate laminating apparatus according to
The pressure-contact feeding means that feeds the coated electrode plate array, which is coated and positioned with the separator and has a welded portion between adjacent electrode plates, always pressed or sucked in a direction orthogonal to the conveying direction, and the coated electrode plate array alternately on the left and right Distributing means that distributes to each other, folding means that folds in a zigzag manner, and insertion of a different polar plate that alternately inserts “positioned different polar plates” between the adjacent polar plates from both lateral directions and alternately stacks positive and negative plates Means are provided.
In the laminating apparatus for positive and negative electrodes, the method for laminating positive and negative electrodes according to
上記正負極板の積層装置では、上記請求項2に記載の正負極板の積層方法を好適に実施することが出来る。 The laminating apparatus for positive and negative electrodes according to
In the laminating apparatus for positive and negative electrodes, the method for laminating positive and negative electrodes according to
上記正負極板の積層装置では、上記請求項3に記載の正負極板の積層方法を好適に実施することが出来る。 In the laminating apparatus for positive and negative electrode plates according to
In the laminating apparatus for positive and negative electrodes, the method for laminating positive and negative electrodes according to
上記正負極板の積層装置では、上記請求項4に記載の正負極板の積層方法を好適に実施することが出来る。 In the laminating apparatus for positive and negative electrode plates according to
In the laminating apparatus for positive and negative electrodes, the method for laminating positive and negative electrodes according to
上記正負極板の積層装置では、上記請求項5に記載の正負極板の積層方法を好適に実施することが出来る。 In the laminating apparatus for positive and negative plates according to
In the laminating apparatus for positive and negative electrodes, the method for laminating positive and negative electrodes according to
上記正負極板の積層装置では、上記請求項6に記載の正負極板の積層方法を好適に実施することが出来る。 The apparatus for laminating positive and negative electrodes according to
In the laminating apparatus for positive and negative electrodes, the method for laminating positive and negative electrodes according to
上記正負極板の積層装置では、上記請求項7に記載の正負極板の積層方法を好適に実施することが出来る。 In the laminating apparatus for positive and negative electrode plates according to
In the laminating apparatus for positive and negative electrodes, the method for laminating positive and negative electrodes according to
このように、本発明の正負極板の積層方法は、全工程を通して正極板および負極板の位置決め精度が常に保持されるように、正極板または負極板を送り出し、振り分け、折り畳むため、正負極板の積層ズレを最小限に抑制しながら生産効率良く正負極板を積層することが可能となると共に、あらゆる端子形状の極板に対し適用することが出来る。
また、本発明の正負極板の積層装置は、上記積層方法を好適に実現することが出来る。 According to the method for laminating positive and negative electrode plates of the present invention, it is possible to laminate the positive and negative electrode plates with high production efficiency while minimizing the misalignment of the positive and negative electrode plates regardless of the terminal shape. That is, in the laminating method of the present invention, a crease is formed in each welded portion of the coated positive electrode plate array coated with the separator and welded between the electrode plates so that the positive and negative electrode plates can be laminated with high production efficiency. The coated positive electrode rows are distributed alternately to the left and right with the folds as fulcrums, and at the same time, the folds are folded into a zigzag shape as fulcrums, and the `` positioned negative plates '' are inserted between these positive plates, and the correct number of sheets is required for battery assembly. The negative electrode plate was laminated. At that time, in order to minimize the stacking deviation, for example, after the positive electrode plate is cut out from the sheet material for the positive electrode plate with a predetermined dimension and covered and positioned with the separator, the initial positioning accuracy is always maintained. The positive electrode plate is sent out while being pressed in a direction perpendicular to the conveying direction, and when the coated positive electrode plate row is distributed to the left and right, the coated positive electrode plate row is distributed to the left and right while being alternately sucked by left and right rollers. In addition, when the positive and negative electrode plates are folded, the pedestal is lowered while the stacked positive and negative electrode plates are pressed by the left and right pressing devices to receive the positive electrode plate or the negative electrode plate.
As described above, the method for laminating the positive and negative electrode plates of the present invention sends out the positive electrode plate or the negative electrode plate so that the positioning accuracy of the positive electrode plate and the negative electrode plate is always maintained throughout the entire process, and distributes and folds the positive and negative electrode plates. Thus, it is possible to stack the positive and negative electrode plates with high production efficiency while minimizing the stacking misalignment, and it can be applied to electrode plates of any terminal shape.
Moreover, the positive / negative plate laminating apparatus of this invention can implement | achieve the said lamination | stacking method suitably.
2 正極フィードローラ
3 正極カッタ
4 上セパレータリール
5 下セパレータリール
6 正極板フィードローラ
7 溶着ヒータ
8a,8b 位置決め板
9 ミシン針
10 押えローラ
11 セパレータカッタ
12 押えローラ
13 振分けサクションローラ
14 集積リフタ
15L 左集積押え爪
15R 右集積押え爪
16L 左負極板挿入アーム
16R 右負極板挿入アーム
17L 左負極リール
17R 右負極リール
18L 左負極フィードローラ
18R 右負極フィードローラ
19L 左負極カッタ
19R 右負極カッタ
20L 左負極リフタ
20R 右負極リフタ
100 正負極板積層装置
200 被覆正極板列
300 積層正負極板 1
この正負極板積層装置100では、ある正極板(P)が正極板用シート材(P.S.)から所定の寸法で切り出されセパレータ(S)に対し一度位置決めされた後は、負極板(N)と交互に積層されるまでの間、その正極板(P)は最初の位置決め精度が常に保持されるように構成されている。同様に負極板(N)についても、一度位置決めされた後は、最初の位置決め状態が常に保持されるように構成されている。そのため、正極板(P)は一度位置決めされた後、圧接送り手段(ローラ又はロッド)によって搬送方向に直交する方向に圧接されながら水平方向へ送り出され、そして左右ローラ(振分け手段、振分けサクションローラ13)によって左右交互に吸引されながら左右に振り分けられ、一端を左右ローラ(振分け手段、振分けサクションローラ13)に吸引されながら他端を固定手段(折り畳み手段、左・右集積押え爪15L,15R)によって押えられた状態でミシン目(折り目)を支点に正確にジグザク状に折り畳まれ、同時に同じく異極板挿入手段(左・右負極板挿入アーム16L,16R)によって「位置決めされた負極板(N)」が正極板間に挿入され、正極板(P)と負極板(N)が生産効率良く積層されるように構成されている。以下、その構成について説明する。 1 and 2 are main part explanatory views showing a positive and negative electrode
In this positive and negative electrode
この被覆正極板列200は、一定幅(=L1mm)の電解質(E)塗布済み正極板用シート材(P.S.)から正極カッタ3によって一定幅(=L2mm)で等間隔に切り出された正極板(P)に対し、一定幅(=L3mm)のセパレータ(S)によって端子(E.T.)が露出するように上下方向から被覆・位置決めし、正極板フィードローラ6及びヒータ7によって位置決め状態を保持したまま、次に一定(=L4mm)のピッチで極板間のセパレータ(S)を溶着して一定幅(=L5mm)の溶着部(H)を等間隔に形成し、次に位置決め板8bおよび押えローラ10によって位置決めしたまま、同じく一定(=L4mm)のピッチで溶着部(H)の中央を通って極板間を縦断するミシン目(P.L.)を等間隔に形成したものである。 FIG. 3 is an explanatory view showing a coated positive
The coated positive
この積層正負極板300は、電池組立に必要枚数の正極板(P)及び負極板(N)を、振分けサクションローラ13によって正極板(P)の位置決め状態を保持しながら左右交互に振り分け、集積リフタ14で正極板(P)を受け・下降しながら同時に左・右集積押え爪15L,15Rで正極板(P)を押え位置決め状態を保持しながらジグザク状に折り畳み、左・右負極板挿入アーム16L,16Rによって、「位置決めされた負極板(N)」を左方向または右方向から水平方向に移動させて正極板(P)上に積層し、最後に厚み方向に沿ってテープ(T)で4箇所固定したものである。 FIG. 4 is an explanatory view showing a laminated positive and negative electrode plate 300 according to the present invention. FIG. 4 (a) is a front view thereof, and FIG. 4 (b) is a sectional view taken along the line AA.
This laminated positive and negative electrode plate 300 distributes the positive electrode plate (P) and the negative electrode plate (N) necessary for battery assembly alternately and left and right while maintaining the positioning state of the positive electrode plate (P) by the
上述した通り、この正負極板積層装置100では、正極板(P)および負極板(N)は一度位置決めされた後、積層されるまでの間、常時その回動が拘束され(常時フリーの状態が抑制され)、正極板(P)と負極板(N)が積層ズレなく生産効率良く積層されるように構成されている。以下、正極板用シート材(P.S.)を送り出してから正極板間を熱溶着し始めるまでの工程について簡単に説明する。説明の便宜上、正極板(P)に対し時系列順に番号を付した。 FIG. 5 is an explanatory view showing the operation of the positive and negative electrode
As described above, in this positive / negative electrode
図6(a)は、2つのヒータ7aが上下方向からセパレータ(S)を当接・加熱し、両側の押え棒7bが正極板Pnおよび正極板Pn+1の隣接端部を押えたまま正極板が所定区間(ピッチ)移動する状態を示している。この時、正極板Pnのもう一方の端部は押え棒7cによって、正極板Pn-1は押え棒7cおよび押えローラ10によって位置決め状態が保持される。また、正極板Pn-2は押えローラ12および振分けサクションローラ13によって位置決め状態が保持される。 FIG. 6 is an explanatory view showing the operation of the positive and negative electrode
In FIG. 6A, the two
この時、所定の長さの正極板用シート材(P.S.)が正極フィードローラ2によって送りだされ、正極板フィードローラ6によって位置決めされている。 FIG. 6B shows a state in which the
At this time, a positive electrode sheet material (PS) having a predetermined length is fed by the positive
正極板Pn+2は正極板フィードローラ6及び押え棒7bによって、正極板Pn+1は押え棒7b,7cによって、正極板Pnは押え棒7cによって、正極板Pn-1は押えローラ10によって、正極板Pn-2は押えローラ12及び振分けサクションローラ13によってそれぞれ位置決めされている。 FIG. 6C shows a state where a new positive electrode plate P n + 2 is cut out and the
The positive electrode plate P n + 2 is pressed by the positive electrode
振分けサクションローラ13は、上述した通り、二つのローラ13L,13Rから構成され、各ローラは2重円筒構造を成す。外筒13-1L,13-1Rは回転することが出来るが、内筒13-2L,13-2Rは回転することが出来ない構造となっている。外筒には貫通孔13-3L,13-3Rが放射状かつ等間隔に複数形成され、内筒にはバキューム流路13-4L,13-4Rがそれぞれ形成されている。従って、ローラ出口部近傍から1/4円弧に及ぶ範囲(例えば80°<θL,θR<160°)に対応する外筒13-1L,13-1R面は吸引面となり、そこを通過する正極板(P)は何れかの吸引面に吸引され左右交互に振り分けられる。 FIG. 7 is an explanatory diagram showing a sorting suction roller, an integrated lifter, an integrated presser claw, and a negative electrode plate insertion arm according to the present invention.
As described above, the
Claims (14)
- セパレータを介して正極板と負極板を交互に積層する積層方法であって、
前記セパレータで被覆・位置決めし隣接極板間に溶着部を形成した被覆極板列を、常に搬送方向に直交する方向に圧接または吸引して送り出しながら、左右交互に振り分けジグザク状に折り畳みながら、前記隣接極板間に「位置決めされた異極板」を両横方向から交互に挿入して正負極板を交互に積層することを特徴とする正負極板の積層方法。 A laminating method of alternately laminating positive and negative electrode plates via a separator,
While covering and positioning with the separator and forming a welded portion between adjacent electrode plates, the coated electrode plate row is always pressed or sucked in the direction orthogonal to the conveying direction and sent out, while being alternately distributed and folded in a zigzag shape, A method of laminating positive and negative electrode plates, wherein positive and negative electrode plates are alternately laminated by alternately inserting “positioned different electrode plates” between adjacent electrode plates from both lateral directions. - 前記溶着部に折り目を形成し、前記被覆極板列の搬送方向を鉛直方向に変換して両横方向から吸引手段によって極板毎交互に吸引して左右に振り分けながらジグザク状に折り畳む請求項1に記載の正負極板の積層方法。 2. A crease is formed in the welded portion, the conveying direction of the coated electrode plate array is changed to a vertical direction, and each electrode plate is alternately sucked by suction means from both lateral directions and folded in a zigzag shape while being distributed to the left and right. The method for laminating positive and negative electrode plates according to 1.
- 前記被覆極板列を左右ローラで圧接して送り出しながら、該左右ローラの出口近傍から1/4円弧以内に前記被覆極板列を左右交互に吸着させて該被覆極板列を左右交互に振り分ける請求項2に記載の正負極板の積層方法。 While the pressure-sensitive electrode plate row is pressed and sent by the left and right rollers, the covered electrode plate row is alternately attracted to the left and right within 1/4 arc from the vicinity of the outlet of the left and right rollers, and the covered electrode plate row is alternately distributed to the left and right. The method for laminating positive and negative electrode plates according to claim 2.
- 前記被覆極板列をジグザク状に折り畳む際、受台に既に着地または積層された極板を固定手段で位置決めする請求項1に記載の正負極板の積層方法。 The method for laminating positive and negative electrode plates according to claim 1, wherein when the coated electrode plate row is folded in a zigzag shape, the electrode plate already landed or laminated on the cradle is positioned by a fixing means.
- 前記折り目はミシン目である請求項2に記載の正負極板の積層方法。 3. The method for laminating positive and negative electrode plates according to claim 2, wherein the fold is a perforation.
- 前記溶着部を形成する溶着手段は、隣接極板の隣接端部を押えながら該隣接極板と伴に移動して前記隣接極板間を溶着する請求項1に記載の正負極板の積層方法。 2. The method of laminating positive and negative electrode plates according to claim 1, wherein the welding means for forming the welded portion moves together with the adjacent electrode plates while pressing adjacent end portions of the adjacent electrode plates to weld the adjacent electrode plates. .
- 前記溶着手段が元の位置へ戻る間、位置決め手段によって極板を位置決めする請求項6に記載の正負極板の積層方法。 The positive and negative electrode plate stacking method according to claim 6, wherein the electrode plate is positioned by the positioning means while the welding means returns to the original position.
- セパレータを介して正極板と負極板を交互に積層する積層装置であって、
前記セパレータで被覆・位置決めし隣接極板間に溶着部を形成した被覆極板列を、常に搬送方向に直交する方向に圧接または吸引して送り出す圧接送り手段と、前記被覆極板列を左右交互に振り分ける振分け手段と、ジグザク状に折り畳む折り畳み手段と、前記隣接極板間に「位置決めされた異極板」を両横方向から交互に挿入して正負極板を交互に積層する異極板挿入手段とを具備したことを特徴とする正負極板の積層装置。 A laminating apparatus for alternately laminating positive and negative plates through separators,
The pressure-contact feeding means that feeds the coated electrode plate array, which is coated and positioned with the separator and has a welded portion between adjacent electrode plates, always pressed or sucked in a direction orthogonal to the conveying direction, and the coated electrode plate array alternately on the left and right Distributing means that distributes to each other, folding means that folds in a zigzag manner, and insertion of a different polar plate that alternately inserts “positioned different polar plates” between the adjacent polar plates from both lateral directions and alternately stacks positive and negative plates Means for laminating positive and negative electrode plates. - 前記溶着部に折り目を形成する折り目形成手段と、前記被覆極板列を両横方向から交互に吸引する前記振分け手段とを備える請求項8に記載の正負極板の積層装置。 The positive and negative electrode plate laminating apparatus according to claim 8, comprising a crease forming means for forming a crease in the welded portion and the distributing means for alternately sucking the coated electrode plate row from both lateral directions.
- 前記振分け手段は、出口近傍から1/4円弧以内に前記被覆極板列を左右交互に吸着して該被覆極板列を左右交互に振り分ける左右ローラである請求項9に記載の正負極板の積層装置。 10. The positive and negative electrode plates according to claim 9, wherein the distribution means is a left and right roller that alternately adsorbs the coated electrode plate rows left and right and distributes the coated electrode plate rows alternately left and right within a quarter arc from the vicinity of the exit. Laminating equipment.
- 前記被覆極板列をジグザク状に折り畳む際、受台に既に着地または積層された極板を位置決めする固定手段を備える請求項8に記載の正負極板の積層装置。 The positive and negative electrode plate stacking apparatus according to claim 8, further comprising a fixing means for positioning the electrode plate already landed or stacked on the cradle when the coated electrode plate array is folded in a zigzag shape.
- 前記折り目形成手段はミシン目を形成する請求項9に記載の正負極板の積層装置。 10. The apparatus for laminating positive and negative plates according to claim 9, wherein the crease forming means forms a perforation.
- 隣接極板の隣接端部の極板を押えながら該隣接極板と伴に移動して前記隣接極板間を溶着する溶着手段を備える請求項8に記載の正負極板の積層装置。 The laminating apparatus for positive and negative electrodes according to claim 8, further comprising welding means for moving between the adjacent electrode plates while welding the electrode plates at the adjacent end portions of the adjacent electrode plates to weld the adjacent electrode plates.
- 前記溶着手段が元の位置へ戻る間、極板を位置決めする位置決め手段を備える請求項13に記載の正負極板の積層装置。 14. The apparatus for laminating positive and negative electrode plates according to claim 13, comprising positioning means for positioning the electrode plates while the welding means returns to the original position.
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Also Published As
Publication number | Publication date |
---|---|
CN103081200B (en) | 2015-08-19 |
JP4823393B1 (en) | 2011-11-24 |
CN103081200A (en) | 2013-05-01 |
JPWO2012020480A1 (en) | 2013-10-28 |
KR20130041188A (en) | 2013-04-24 |
KR101315809B1 (en) | 2013-10-08 |
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