WO2022209161A1 - 切断装置および切断方法 - Google Patents
切断装置および切断方法 Download PDFInfo
- Publication number
- WO2022209161A1 WO2022209161A1 PCT/JP2022/001546 JP2022001546W WO2022209161A1 WO 2022209161 A1 WO2022209161 A1 WO 2022209161A1 JP 2022001546 W JP2022001546 W JP 2022001546W WO 2022209161 A1 WO2022209161 A1 WO 2022209161A1
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- WO
- WIPO (PCT)
- Prior art keywords
- active material
- material layer
- cutting
- continuous body
- cutting blade
- Prior art date
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 138
- 238000000034 method Methods 0.000 title claims description 16
- 239000011149 active material Substances 0.000 claims abstract description 91
- 238000012545 processing Methods 0.000 claims abstract description 69
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 230000032258 transport Effects 0.000 description 15
- 239000007772 electrode material Substances 0.000 description 13
- 210000001015 abdomen Anatomy 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
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- 238000004080 punching Methods 0.000 description 2
- 238000009751 slip forming Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
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- 230000037430 deletion Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 238000004898 kneading Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/08—Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D11/00—Combinations of several similar cutting apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
- B26D1/085—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type for thin material, e.g. for sheets, strips or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
- B26D1/36—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and rotating continuously in one direction during cutting, e.g. mounted on a rotary cylinder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
- B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
- B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
- B26D1/36—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and rotating continuously in one direction during cutting, e.g. mounted on a rotary cylinder
- B26D1/365—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and rotating continuously in one direction during cutting, e.g. mounted on a rotary cylinder for thin material, e.g. for sheets, strips or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/56—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter
- B26D1/62—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder
- B26D1/626—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder for thin material, e.g. for sheets, strips or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/20—Cutting beds
- B26D7/204—Anvil rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D9/00—Cutting apparatus combined with punching or perforating apparatus or with dissimilar cutting apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
- H01G11/28—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features arranged or disposed on a current collector; Layers or phases between electrodes and current collectors, e.g. adhesives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
-
- 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
-
- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present disclosure relates to a cutting device and a cutting method.
- a secondary battery as an example has a laminated electrode body in which a plurality of electrode plates are laminated, and a battery case that accommodates the laminated electrode body and an electrolytic solution.
- the electrode plate has a structure in which an electrode active material layer is laminated on the surface of a collector plate made of metal foil or the like.
- an electrode material is conveyed in which an electrode active material is applied to a strip-shaped collector plate, and the electrode material is punched out by a die roll cutter to continuously form an electrode plate.
- An electrode manufacturing facility is disclosed.
- the inventors of the present invention have extensively studied the manufacturing method of the electrode plate, and found that the conventional manufacturing method of punching the electrode material with a die roll cutter has room for improvement in terms of improving the quality of the electrode plate. rice field.
- the present disclosure has been made in view of such circumstances, and one of its purposes is to provide a technique for improving the quality of electrode plates.
- An aspect of the present disclosure includes a current collector plate having a first surface and a second surface facing each other, a first active material layer laminated on the first surface, and a second active material layer laminated on the second surface is a cutting device for cutting a continuous body of electrode plates having
- This cutting device includes a first processing section for forming a cut portion in the first active material layer by inserting a first cutting blade from the first active material layer side to the front of the current collector plate, and a second active material layer side.
- a second processing unit that cuts the continuous body by inserting the second cutting blade from a position facing the notch to beyond the current collector plate.
- Another aspect of the present disclosure is a current collector plate having first and second surfaces facing away from each other, a first active material layer laminated on the first surface, and a second active material laminated on the second surface
- a cutting method for cutting a continuous body of electrode plates having layers the first cutting blade is advanced from the first active material layer side to the front of the current collector plate to form a cut portion in the first active material layer, and the cut portion is opposed to the cut portion on the second active material layer side. cutting the continuum by inserting the second cutting blade from the position where the continuum is to exceed the current collector plate.
- FIG. 1 is a perspective view of a cutting device according to Embodiment 1; FIG. It is a sectional view showing a cutting device typically.
- FIG. 5 is a cross-sectional view schematically showing a cutting device according to Embodiment 2;
- FIG. 11 is a cross-sectional view schematically showing a cutting device according to Embodiment 3;
- FIG. 1 is a perspective view of a cutting device 1 according to Embodiment 1.
- FIG. FIG. 2 is a cross-sectional view schematically showing the cutting device 1. As shown in FIG. In FIG. 2 , illustration of the conveying unit 6 is omitted, only the first cutting blade 26 of the first processing unit 8 is shown, and only the second cutting blade 32 of the second processing unit 10 is shown. Also, a state in which the continuum 4 is extended linearly is illustrated.
- a cutting device 1 is a device for cutting a continuous body 4 of electrode plates 2 into pieces into a plurality of electrode plates 2, and comprises a conveying section 6, a first processing section 8, and a second processing section 10. Prepare.
- the continuum 4 is a belt-like body in which a plurality of electrode plates 2 are connected in the conveying direction of the continuum 4 .
- the continuum 4 is cut by the first processing unit 8 and the second processing unit 10 to be individualized into the plurality of electrode plates 2 .
- a laminated electrode body is obtained by alternately laminating individual electrode plates 2 with separators interposed therebetween.
- the obtained laminated electrode body can be used for rechargeable secondary batteries such as lithium ion batteries, nickel-hydrogen batteries and nickel-cadmium batteries, and capacitors such as electric double layer capacitors.
- Each electrode plate 2 has a collector plate 12 , a first active material layer 14 and a second active material layer 16 .
- the current collector plate 12 has a first surface 12a and a second surface 12b facing each other.
- the first active material layer 14 is laminated on the first surface 12a.
- the second active material layer 16 is laminated on the second surface 12b. Therefore, the electrode plate 2 has a three-layer structure in which the collector plate 12 is sandwiched between the first active material layer 14 and the second active material layer 16 .
- the collector plate 12 is made of aluminum foil or the like if it is a positive electrode, and made of copper foil or the like if it is a negative electrode.
- the first active material layer 14 and the second active material layer 16 are formed by applying an electrode mixture to the first surface 12a and the second surface 12b of the current collector plate 12 with a known coating device, drying and rolling. be able to.
- the electrode mixture is obtained by kneading materials such as an electrode active material, a binder, and a conductive material into a dispersion medium and dispersing them uniformly.
- the electrode active material is lithium cobalt oxide, lithium iron phosphate, or the like for the positive electrode, and graphite or the like for the negative electrode.
- the continuum 4 is transported by the transport unit 6 .
- the transport unit 6 transports the continuous body 4 by means of transport rolls 18, transport drums 20, and the like.
- the transport roll 18 is arranged upstream of the transport drum 20 in the transport direction of the continuous body 4 .
- the conveying drum 20 has a cylindrical drum body 22 and a plurality of holding heads 24 arranged in the circumferential direction of the drum body 22 .
- the plurality of holding heads 24 have holding surfaces that attract and hold the continuous body 4 and the individualized electrode plates 2 .
- the retaining surface of each retaining head 24 faces the outside of the drum body 22 .
- the continuous body 4 and the individualized electrode plates 2 are conveyed by the rotation of the drum body 22 while being held by suction on the holding surfaces of the plurality of holding heads 24 .
- a first processing unit 8 and a second processing unit 10 are arranged on the conveying path of the continuum 4 .
- the first processing unit 8 is arranged upstream of the transport roll 18
- the second processing unit 10 is arranged to face the transport drum 20 .
- the first processed portion 8 is arranged so as to face the surface of the continuous body 4 on the first active material layer 14 side.
- the transport roll 18 is arranged so that the peripheral surface of the roll is in contact with the surface of the continuous body 4 on the second active material layer 16 side.
- the continuous body 4 is folded back in the transport direction by the transport rolls 18 and delivered to the transport drum 20 .
- the conveying drum 20 conveys the continuous body 4 by adsorbing and holding the surface of the continuous body 4 on the first active material layer 14 side with the holding surface of each holding head 24 . Therefore, the continuum 4 is conveyed with the surface on the second active material layer 16 side facing the outside of the drum.
- the continuous body 4 is conveyed downstream of the conveying drum 20 after passing between the conveying drum 20 and the second processing unit 10 at positions where they face each other.
- the first processing unit 8 has a first cutting edge 26.
- the first cutting blade 26 extends so as to overlap the entire continuous body 4 in the width direction of the continuous body 4 (direction orthogonal to the conveying direction).
- the first processing unit 8 inserts the first cutting blade 26 from the first active material layer 14 side of the continuous body 4 to the front of the current collector plate 12 to form a cut portion 28 in the first active material layer 14. .
- the first processed portion 8 forms a cut portion 28 at the boundary between two adjacent electrode plates 2 .
- the depth of the cut portion 28 is, for example, about 30 to 80% of the thickness of the first active material layer 14 .
- the cut portion 28 is provided only in part of the first active material layer 14 in the thickness direction of the continuous body 4 .
- the two adjacent electrode plates 2 are kept connected by the remaining portion of the first active material layer 14, the current collector plate 12, and the second active material layer 16. be done. Note that the cut portion 28 may be formed over the entire thickness direction of the first active material layer 14 . Even in this case, the two adjacent electrode plates 2 are kept connected to each other by the current collector plate 12 and the second active material layer 16 .
- the first processing section 8 of the present embodiment continuously forms cuts 28 in the continuous body 4 that is sequentially sent by the conveying section 6 .
- the first processing section 8 has a first roll 30 that rotates in synchronization with the conveyance of the continuous body 4 .
- a first cutting blade 26 is provided on the peripheral surface of the first roll 30 . That is, the first processing unit 8 has a die roll cutter.
- the first roll 30 rotates in synchronization with the conveyance of the continuous body 4, so that the notches 28 are continuously formed.
- the cutting device 1 may have a support section (not shown) that supports the continuous body 4 at a position facing the first processing section 8 with the continuous body 4 interposed therebetween.
- the support section is composed of, for example, a roll that rotates in synchronism with the conveyance of the continuous body 4 .
- the continuous body 4 in which the notch 28 is formed is conveyed to a position where the conveying drum 20 and the second processing section 10 face each other.
- the notch 28 is arranged between two adjacent holding heads 24 while the continuous body 4 is held by suction on the conveying drum 20 .
- the second processing unit 10 is provided so as to be able to advance and retreat with respect to the conveying drum 20 in the radial direction of the conveying drum 20 .
- the second processing unit 10 also has a second cutting blade 32 facing the conveying drum 20 side.
- the second processing unit 10 advances toward the conveying drum 20, and advances the second cutting blade 32 from a position facing the cut portion 28 on the second active material layer 16 side of the continuous body 4 until it exceeds the current collector plate 12.
- the second cutting blade 32 enters the continuum 4 from the second surface 12b side at a position overlapping the notch 28 when viewed from the thickness direction of the continuum 4, and penetrates at least the current collector plate 12. Thereby, cut portions 34 are formed in at least the second active material layer 16 and the current collector plate 12 .
- the second cutting edge 32 advances until it reaches the cut 28 .
- cut portions 34 are also formed in portions of the first active material layer 14 where the cut portions 28 are not provided.
- the second cutting blade 32 enters so that its cutting edge does not exceed the cut portion 28 or the first active material layer 14, that is, does not exceed the surface of the continuous body 4 on the first active material layer 14 side. do.
- the second processing portion 10 is retracted from the continuous body 4 when the cutting edge of the second cutting blade 32 reaches the bottom of the cut portion 28 .
- the second processing unit 10 continuously forms cuts 34 in the continuous body 4 that is sequentially sent by the conveying unit 6 .
- the continuous body 4 is cut and the electrode plate 2 is singulated.
- Each individualized electrode plate 2 is conveyed while being sucked and held by each holding head 24, and transferred to a downstream conveying mechanism.
- the cutting device 1 is a device that cuts the continuum 4 in which a plurality of electrode plates 2 are continuous.
- Each electrode plate 2 has a structure in which a first active material layer 14 is laminated on the first surface 12a side of the current collector plate 12 and a second active material layer 16 is laminated on the second surface 12b side.
- the cutting device 1 causes the first cutting blade 26 to enter the continuous body 4 from the side of the first active material layer 14 to the front of the current collector plate 12 , thereby forming a cut portion 28 in the first active material layer 14 in a first processing.
- a second process of cutting the continuous body 4 by inserting the second cutting blade 32 into the continuous body 4 from a position facing the cut part 28 on the side of the second active material layer 16 to the position facing the cut part 28 on the side of the second active material layer 16 until it exceeds the current collector plate 12 a part 10;
- the first processing unit 8 causes the first cutting blade 26 to enter from the first active material layer 14 side to form the cut portion 28 only in the first active material layer 14 .
- the second processing unit 10 cuts the continuous body 4 by inserting the second cutting blade 32 from the second active material layer 16 side.
- the amount of entry of the first cutting blade 26 and the second cutting blade 32 into the continuum 4 can be made smaller than the thickness of the continuum 4 .
- the cutting blade is inserted into the continuous body 4 only from the second active material layer 16 side, and only the second active material layer 16 and the current collector plate 12 are cut.
- the first active material layer 14 is divided by the force applied to the continuous body 4 when the cutting blade spreads the second active material layer 16 and the tensile stress applied to the continuous body 4 during transportation.
- the electrode active material layer is a layer of compacted powder. For this reason, if the first active material layer 14 is pulled and divided, there is a risk that an irregular cross section will be formed or a part of the layer will fall off.
- the first active material layer 14 is provided in advance with the notch 28 for guiding the division. Therefore, the planarity or linearity of the cut surface of the first active material layer 14 can be ensured. Therefore, the quality of the electrode plate 2 can be improved.
- the second cutting blade 32 does not enter the continuous body 4 until it reaches the cut portion 28, a part of the first active material layer 14 can be maintained in a continuous state. This portion is divided by tensile stress or the like applied to the continuum 4 .
- the first active material layer 14 is provided with the notch 28 , when a tensile stress or the like is applied to the continuous body 4 , the stress concentrates on the notch 28 . Thereby, the first active material layer 14 is cut along the cut portion 28 . Therefore, the straightness of the cut surface of the first active material layer 14 can be ensured, and the quality of the electrode plate 2 can be improved.
- a tensile stress may be applied to the continuum 4 when it is cut.
- the continuous body 4 is subjected to tensile stress during transportation.
- a tensile stress greater than the tensile stress associated with transportation may be applied to the continuum 4 .
- the cutting device 1 of the present embodiment includes a conveying section 6 that conveys the continuous body 4 .
- the first processing section 8 and the second processing section 10 are arranged on the conveying path of the continuum 4, and form a notch 28 in the continuum 4 successively sent and cut the continuum 4. . Thereby, the throughput of the cutting device 1 can be improved.
- the first processing unit 8 of the present embodiment has a first roll 30 which is provided with a first cutting edge 26 on its peripheral surface and which rotates in synchronization with the conveyance of the continuous body 4 .
- the notches 28 can be continuously formed in the continuous body 4 with a simpler configuration.
- FIG. 3 is a cross-sectional view schematically showing the cutting device 1 according to Embodiment 2. As shown in FIG. 3 , illustration of the conveying unit 6 is omitted, only the first cutting blade 26 of the first processing unit 8 is shown, and only the second cutting blade 32 of the second processing unit 10 is shown. Also, a state in which the continuum 4 is extended linearly is illustrated.
- the cutting device 1 of the present embodiment includes a support portion 36 at a position facing the first processing portion 8 with the continuous body 4 interposed therebetween.
- the support portion 36 supports the continuum 4 from the back side when the first cutting edge 26 of the first processing portion 8 is pressed against the continuum 4 .
- the support part 36 of the present embodiment is composed of, for example, a roll that rotates in synchronization with the conveyance of the continuous body 4 .
- the support portion 36 has a groove 38 recessed in a direction away from the first processing portion 8 at a position facing the first cutting edge 26 .
- the groove 38 extends in the width direction of the continuum 4 so as to overlap the entire first cutting blade 26 .
- the portion of the second active material layer 16 that overlaps the groove 38 is a receiving Since there is no surface, it is crushed starting from the edge of the groove 38 . Then, it separates from the current collector plate 12 and drops into the groove 38 . As a result, linear stripped portions 40 corresponding to the grooves 38 are formed at positions facing the cut portions 28 in the second active material layer 16 .
- the width of the groove 38 (the size in the conveying direction of the continuous body 4) is narrower than the width of the first cutting blade 26.
- the width of the groove 38 is, for example, the width of the portion (opening) that intersects with the surface of the support portion 36 .
- the width of the first cutting blade 26 is, for example, the width of the tip side end of the belly (blade) of the first cutting blade 26 .
- the active material dropped into the grooves 38 may be collected by a suction mechanism (not shown) or the like.
- the continuous body 4 on which the cut portion 28 and the peeling portion 40 are formed is transported to the second processing portion 10 by the transport drum 20 .
- the second processing unit 10 causes the second cutting blade 32 to enter the peeling unit 40 from the second active material layer 16 side of the continuous body 4 .
- the current collecting plate 12 is cut and the electrode plate 2 is separated into individual pieces.
- the cutting device 1 according to the present embodiment can also achieve the same effects as the cutting device 1 according to the first embodiment.
- the second active material layer 16 is formed with a separation portion 40 that serves as a guide for the position of the cut portion 28 . This facilitates the entry of the second cutting blade 32 into the position facing the cut portion 28 . Therefore, the quality of the electrode plate 2 can be further improved.
- FIG. 4 is a cross-sectional view schematically showing the cutting device 1 according to Embodiment 3. As shown in FIG. 4 , illustration of the conveying unit 6 is omitted, the first processing unit 8 includes only the first cutting blade 26 and a part of the first roll 30, and the second processing unit 10 includes the second cutting blade 32 and the second roll 42. only part of is shown. Also, a state in which the continuum 4 is extended linearly is illustrated.
- the first processing unit 8 of the present embodiment has a first roll 30 having a first cutting blade 26 provided on its peripheral surface and rotating in synchronization with the conveyance of the continuous body 4 . That is, the first processing unit 8 has a die roll cutter. Further, the second processing unit 10 of the present embodiment has a second roll 42 which is provided with the second cutting edge 32 on its peripheral surface and rotates in synchronization with the conveyance of the continuous body 4 . Further, in the cutting device 1 of the present embodiment, the support portion 36 having the groove 38 is arranged at a position facing the first processing portion 8 with the continuous body 4 interposed therebetween.
- the first cutting blade 26 is inserted into the boundary between the two adjacent electrode plates 2 to form the notch 28.
- a peeling portion 40 is formed at a position facing the cut portion 28 in the second active material layer 16 .
- the support portion 36 may be omitted.
- the second roll 42 rotates in synchronization with the conveyance of the continuous body 4, so that the second cutting blade 32 is inserted into the peeling portion 40 from the second active material layer 16 side, and the current collector plate 12 is cut. be.
- the cutting device 1 according to the present embodiment can also achieve the same effects as the cutting device 1 according to the first embodiment.
- the second processing unit 108 of the present embodiment has a second roll 42 which is provided with the second cutting edge 32 on its peripheral surface and which rotates in synchronization with the conveyance of the continuous body 4 .
- the electrode plates 2 can be continuously separated into individual pieces with a simpler configuration.
- the use of the second roll 42 for the second processing unit 10 and the use of the first roll 30 for the first processing unit 8 can be performed independently.
- the second processing unit 10 may be a die roll cutter
- the first processing unit 8 may have a structure in which the first cutting blade 26 advances and retreats with respect to the continuous body 4 in a direction intersecting the conveying direction of the continuous body 4 .
- Embodiments may be specified by items described below.
- a current collector plate (12) having a first surface (12a) and a second surface (12b) facing each other, a first active material layer (14) laminated on the first surface (12a), and a second surface
- a first cutting blade (26) is advanced from the first active material layer (14) side to the front of the current collector plate (12) to form a cut (28) in the first active material layer (14).
- a second cutting blade (32) is advanced from a position facing the cut (28) on the second active material layer (16) side to beyond the current collector plate (12) to cut the continuous body (4).
- a cutting device (1) A conveying section (6) for conveying the continuum (4), The first processing unit (8) and the second processing unit (10) are arranged on the conveying path of the continuous body (4), A cutting device (1) according to item 1.
- the first processing unit (8) has a first roll (30) provided with a first cutting edge (26) on its peripheral surface and rotating in synchronization with the conveyance of the continuous body (4), A cutting device (1) according to item 2.
- the second processing unit (10) has a second roll (42) provided with a second cutting blade (32) on its peripheral surface and rotating in synchronization with the conveyance of the continuous body (4).
- the cutting device (1) comprises a support section (36) that faces the first processing section (8) across the continuous body (4) and supports the continuous body (4),
- the support part (36) has a groove (38) recessed in a direction away from the first processing part (8) at a position facing the first cutting edge (26),
- a cutting device (1) according to any one of items 1 to 4.
- a cutting method for cutting a continuous body (4) of electrode plates (2) having a second active material layer (16) laminated on 12b) comprising: The first cutting blade (26) is advanced from the first active material layer (14) side to the front of the current collector (12) to form a cut (28) in the first active material layer (14), Cutting the continuum (4) by inserting the second cutting blade (32) from a position facing the notch (28) on the second active material layer (16) side to beyond the current collecting plate (12). including, cutting method.
- the present disclosure can be used for cutting devices and cutting methods.
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Abstract
Description
図1は、実施の形態1に係る切断装置1の斜視図である。図2は、切断装置1を模式的に示す断面図である。図2では、搬送部6の図示を省略し、第1加工部8は第1切断刃26のみ、第2加工部10は第2切断刃32のみを図示している。また、連続体4を直線状に延ばした状態を図示している。切断装置1は、電極板2の連続体4を切断して複数の電極板2に個片化する装置であって、搬送部6と、第1加工部8と、第2加工部10とを備える。
実施の形態2は、溝付きの支持部を備える点を除き、実施の形態1と共通の構成を有する。以下、本実施の形態について実施の形態1と異なる構成を中心に説明し、共通する構成については簡単に説明するか、あるいは説明を省略する。図3は、実施の形態2に係る切断装置1を模式的に示す断面図である。図3では、搬送部6の図示を省略し、第1加工部8は第1切断刃26のみ、第2加工部10は第2切断刃32のみを図示している。また、連続体4を直線状に延ばした状態を図示している。
実施の形態3は、第2加工部10の形状を除き、実施の形態2と共通の構成を有する。以下、本実施の形態について実施の形態2と異なる構成を中心に説明し、共通する構成については簡単に説明するか、あるいは説明を省略する。図4は、実施の形態3に係る切断装置1を模式的に示す断面図である。図4では、搬送部6の図示を省略し、第1加工部8は第1切断刃26と第1ロール30の一部のみ、第2加工部10は第2切断刃32と第2ロール42の一部のみを図示している。また、連続体4を直線状に延ばした状態を図示している。
[項目1]
互いに背向する第1面(12a)および第2面(12b)を有する集電板(12)、第1面(12a)に積層された第1活物質層(14)、および第2面(12b)に積層された第2活物質層(16)を有する電極板(2)の連続体(4)を切断する切断装置(1)であって、
第1活物質層(14)側から集電板(12)の手前まで第1切断刃(26)を進入させて、第1活物質層(14)に切り込み部(28)を形成する第1加工部(8)と、
第2活物質層(16)側の切り込み部(28)と対向する位置から集電板(12)を超えるまで第2切断刃(32)を進入させて、連続体(4)を切断する第2加工部(10)と、を備える、
切断装置(1)。
[項目2]
連続体(4)を搬送する搬送部(6)を備え、
第1加工部(8)および第2加工部(10)は連続体(4)の搬送路上に配置される、
項目1に記載の切断装置(1)。
[項目3]
第1加工部(8)は、第1切断刃(26)が周面に設けられるとともに連続体(4)の搬送と同期して回転する第1ロール(30)を有する、
項目2に記載の切断装置(1)。
[項目4]
第2加工部(10)は、第2切断刃(32)が周面に設けられるとともに連続体(4)の搬送と同期して回転する第2ロール(42)を有する、
項目2または3に記載の切断装置(1)。
[項目5]
切断装置(1)は、連続体(4)を挟んで第1加工部(8)と対向し、連続体(4)を支持する支持部(36)を備え、
支持部(36)は、第1切断刃(26)と対向する位置に、第1加工部(8)から離間する方向に凹む溝(38)を有する、
項目1乃至4のいずれかに記載の切断装置(1)。
[項目6]
互いに背向する第1面(12a)および第2面(12b)を有する集電板(12)、第1面(12a)に積層された第1活物質層(14)、および第2面(12b)に積層された第2活物質層(16)を有する電極板(2)の連続体(4)を切断する切断方法であって、
第1活物質層(14)側から集電板(12)の手前まで第1切断刃(26)を進入させて、第1活物質層(14)に切り込み部(28)を形成し、
第2活物質層(16)側の切り込み部(28)と対向する位置から集電板(12)を超えるまで第2切断刃(32)を進入させて、連続体(4)を切断することを含む、
切断方法。
Claims (6)
- 互いに背向する第1面および第2面を有する集電板、前記第1面に積層された第1活物質層、および前記第2面に積層された第2活物質層を有する電極板の連続体を切断する切断装置であって、
前記第1活物質層側から前記集電板の手前まで第1切断刃を進入させて、前記第1活物質層に切り込み部を形成する第1加工部と、
前記第2活物質層側の前記切り込み部と対向する位置から前記集電板を超えるまで第2切断刃を進入させて、前記連続体を切断する第2加工部と、を備える、
切断装置。 - 前記連続体を搬送する搬送部を備え、
前記第1加工部および前記第2加工部は前記連続体の搬送路上に配置される、
請求項1に記載の切断装置。 - 前記第1加工部は、前記第1切断刃が周面に設けられるとともに前記連続体の搬送と同期して回転する第1ロールを有する、
請求項2に記載の切断装置。 - 前記第2加工部は、前記第2切断刃が周面に設けられるとともに前記連続体の搬送と同期して回転する第2ロールを有する、
請求項2または3に記載の切断装置。 - 前記切断装置は、前記連続体を挟んで前記第1加工部と対向し、前記連続体を支持する支持部を備え、
前記支持部は、前記第1切断刃と対向する位置に、前記第1加工部から離間する方向に凹む溝を有する、
請求項1乃至4のいずれか1項に記載の切断装置。 - 互いに背向する第1面および第2面を有する集電板、前記第1面に積層された第1活物質層、および前記第2面に積層された第2活物質層を有する電極板の連続体を切断する切断方法であって、
前記第1活物質層側から前記集電板の手前まで第1切断刃を進入させて、前記第1活物質層に切り込み部を形成し、
前記第2活物質層側の前記切り込み部と対向する位置から前記集電板を超えるまで第2切断刃を進入させて、前記連続体を切断することを含む、
切断方法。
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JP2012069279A (ja) * | 2010-09-21 | 2012-04-05 | Nissan Motor Co Ltd | 電極切断装置及び電極製造方法 |
JP2017196669A (ja) | 2016-04-25 | 2017-11-02 | 株式会社豊田自動織機 | 電極製造設備 |
JP2018164970A (ja) * | 2017-03-28 | 2018-10-25 | トヨタ自動車株式会社 | 切断装置および回転刃 |
US20190267608A1 (en) * | 2016-06-27 | 2019-08-29 | Samsung Sdi Co., Ltd. | Method for manufacturing secondary battery and secondary battery using same |
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JP2012069279A (ja) * | 2010-09-21 | 2012-04-05 | Nissan Motor Co Ltd | 電極切断装置及び電極製造方法 |
JP2017196669A (ja) | 2016-04-25 | 2017-11-02 | 株式会社豊田自動織機 | 電極製造設備 |
US20190267608A1 (en) * | 2016-06-27 | 2019-08-29 | Samsung Sdi Co., Ltd. | Method for manufacturing secondary battery and secondary battery using same |
JP2018164970A (ja) * | 2017-03-28 | 2018-10-25 | トヨタ自動車株式会社 | 切断装置および回転刃 |
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