WO2013031938A1 - Batterie secondaire - Google Patents

Batterie secondaire Download PDF

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Publication number
WO2013031938A1
WO2013031938A1 PCT/JP2012/072128 JP2012072128W WO2013031938A1 WO 2013031938 A1 WO2013031938 A1 WO 2013031938A1 JP 2012072128 W JP2012072128 W JP 2012072128W WO 2013031938 A1 WO2013031938 A1 WO 2013031938A1
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WO
WIPO (PCT)
Prior art keywords
positive electrode
outer peripheral
electrode
secondary battery
negative electrode
Prior art date
Application number
PCT/JP2012/072128
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English (en)
Japanese (ja)
Inventor
孝夫 大道寺
Original Assignee
Ｎｅｃエナジーデバイス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ｎｅｃエナジーデバイス株式会社 filed Critical Ｎｅｃエナジーデバイス株式会社
Publication of WO2013031938A1 publication Critical patent/WO2013031938A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • 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
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • 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
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a stacked secondary battery in which a battery element in which a positive electrode and a negative electrode are stacked via a separator is sealed with an exterior material.
  • a stacked secondary battery such as a lithium ion battery in which a positive electrode and a negative electrode are stacked with a separator interposed therebetween increases the area of the positive electrode and the negative electrode or increases the number of stacked positive and negative electrodes per unit cell. Therefore, it is suitable for a battery having a large charge / discharge capacity.
  • the positive electrode is coated with a slurry for a positive electrode in which a particulate positive electrode active material, a conductive material, a binder, etc. are mixed on the surface of a strip-shaped aluminum foil of a current collector. It is manufactured by cutting it.
  • apply negative electrode slurry in which particulate negative electrode active material, conductive material, binder, etc.
  • the corner portion of the cut electrode It is possible to use a cutting tool that pushes with a cutting blade such that becomes a quadrant.
  • the electrode by blanking by punching with a cutting tool that has a cutting blade that matches the electrode shape, but this is not applicable to large shapes that cannot be punched at once. Therefore, there is a problem that it is not industrially suitable, such as the need for a cutting blade. Therefore, the width direction and the length direction of the electrode are cut separately, and after cutting one of the width direction or the length direction by an arbitrary method, the corner of the electrode is cut when the other is pushed off. A cutting tool having a cutting blade that is a quadrant is used. However, in this case, when the edge of the cutting blade does not match the side of the electrode that has been cut in advance, the positive electrode cutting body 106 cut from the positive electrode substrate as shown in FIG.
  • the negative electrode has a larger area than the positive electrode. Things are needed. For this reason, those that are not cut into a predetermined shape, or that have a chamfered portion that does not coincide with the outer peripheral line of the positive electrode or the negative electrode and have a stepped portion, etc., can not be used for manufacturing a lithium ion battery. There wasn't.
  • the present invention has a high production yield rate even when a slight positioning error or the like occurs between the positive electrode base material or negative electrode base material and the cutting tool during the manufacture of the laminated secondary battery. It is an object of the present invention to provide a stable stacked secondary battery.
  • This invention solves the said subject, Comprising: The 1st chamfering part by which at least one place of the intersection of two adjacent sides of the outer periphery of the positive electrode electrical power collector with which the positive electrode active material was apply
  • a separator is provided between the negative electrode and at least a part of an outer peripheral line of the first or second chamfered portion has a curved portion and two outer peripheral connection portions connected to the curved portion, and the curved portion And at least one of the angles formed by the tangent line at the intersection of the outer peripheral connection part and the line of the outer peripheral connection part.
  • the tangent means a straight line.
  • the obtuse angle is 120 ° or more and less than 180 °. More preferably, the secondary battery has an obtuse angle of 135 ° or more and less than 180 °.
  • the present invention is a stacked secondary battery in which the positive electrode and the negative electrode have a positive electrode collector tab, a positive electrode extraction tab formed integrally with the negative electrode collector, and a negative electrode extraction tab, respectively.
  • the present invention is the above secondary battery in which the curved portion is an arc.
  • This invention is the said secondary battery which is a lithium ion secondary battery.
  • the present invention is the above-described stacked secondary battery in which the positive electrode and the negative electrode have a rectangular outer shape.
  • the two outer peripheral connection portions connected to the end portion of the curved portion, and the intersection of the curved portion and the outer peripheral connection portion are all projected by projecting the positive electrode onto a plane parallel to the positive electrode current collector. It means what is represented on the plane figure formed on the figure.
  • the angle formed between the tangent line and the line of the outer peripheral connection portion is the tangent line of the portion where the two tangent lines intersect at two intersections of the curved portion and the outer peripheral connection portion and the line of the outer peripheral connection portion. It means the angle to make.
  • the chamfered portion having a specific shape is formed at the corner of at least one of the positive electrode and the negative electrode.
  • a chamfered portion having a desired shape is formed even when a mutual misalignment or the like occurs when cutting with a cutting tool, so that a secondary battery with improved productivity and stable quality can be provided.
  • the chamfered portion of the present invention is formed at least on the positive electrode or the negative electrode located closest to the battery container, the electrode and the container are pierced through the insulating film disposed between the battery container and the like. The possibility of short-circuiting can be reduced, and a lithium ion battery excellent in productivity can be provided.
  • the negative electrode current collector When applied to a lithium ion battery, in order to prevent generation of lithium dendrites on the negative electrode current collector, the negative electrode current collector must be disposed on the negative electrode current collector facing the surface on which the positive electrode active material is formed. Therefore, the positive electrode tends to have a smaller outer dimension than the negative electrode. That is, the area of the positive electrode is one of the factors that govern the size of the battery capacity. Therefore, if the chamfered portion of the present invention is formed at least on the positive electrode, it is possible to obtain an effect of increasing the battery capacity by the amount of the electrode active material to be removed.
  • FIG. 1 is a diagram illustrating a manufacturing process of a positive electrode and a negative electrode.
  • FIG. 2 is a diagram for explaining an embodiment of the laminated secondary battery of the present invention.
  • 2A is a front view
  • FIG. 2B is a cross-sectional view taken along the line A-A ′ in FIG. 1A and showing an enlarged view of the stacking direction.
  • FIG. 3 is a plan view illustrating the chamfered portion of the positive electrode according to one embodiment of the present invention.
  • FIG. 3A is a plan view illustrating a positive electrode having a chamfered portion.
  • FIG. 3B is an enlarged view of the chamfered portion.
  • FIG. 4 is a view for explaining an example of a cutting tool used for forming the chamfered portion of the present invention and the conventional one.
  • FIG. 4A is a diagram for explaining an example of a conventional cutting tool
  • FIG. 4B is a diagram for explaining an example of a cutting tool used for manufacturing the positive electrode of the present invention.
  • FIG. 5 is a diagram for explaining another embodiment of the present invention.
  • FIG. 6 is a diagram for explaining the positive electrode in which the positioning of the positive electrode base material and the cutting tool has shifted.
  • FIG. 1 is a diagram illustrating a manufacturing process of a positive electrode and a negative electrode. Since the positive electrode and the negative electrode are produced by the same method except for the constituent materials, the positive electrode is described in the following description.
  • the positive electrode base material is a positive electrode base material in which a slurry-like positive electrode mixture is intermittently applied to both surfaces on a positive electrode current collector made of a strip-shaped aluminum foil, dried and then compressed by a roller press or the like to be molded. It is produced by cutting to a predetermined size.
  • lithium-containing composite oxides such as lithium manganese composite oxide and lithium cobalt composite oxide, conductive materials such as carbon black, binders such as polyvinylidene fluoride, and the like are used.
  • a slurry dispersed in 2-pyrrolidone can be used.
  • a positive electrode active material layer 103 is intermittently formed on the positive electrode base material 102 at a portion shown by a shaded portion.
  • the positive electrode active material layer is formed by intermittently forming the positive electrode active material layer 103 in an area larger than the positive electrode part outline 104 indicating the size of the positive electrode to be manufactured. Yes.
  • both side surface portions 105a and 105b in the length direction of the strip-like positive electrode base material 102 are cut along a predetermined positive electrode outer shape line.
  • the positive electrode active material layer 103 applied intermittently in the length direction is cut along a first cutting line 110 formed of a curved portion at a straight portion and both ends.
  • the positive electrode extraction tab forming part 113 is cut integrally with the second cutting line 112 for taking out the positive electrode extraction tab, and the positive electrode cut body 106 is produced. Since the positive electrode active material application part 114 remains at the tip of the positive electrode extraction tab formation part 113, the positive electrode active material application part 114 is cut to form the positive electrode extraction tab 115 as shown in FIG. 1D.
  • the electrode 100 is completed.
  • the positive electrode 100 has a chamfered portion 150 whose corners are chamfered in a curved shape.
  • FIGS. 1A to 1D the example in which the positive electrode extraction tab is located on one side of the center line in the width direction has been described. However, the center line may coincide with the center line of the positive electrode extraction tab.
  • the negative electrode comprises a strip-shaped copper foil on a negative electrode current collector, a carbon material that absorbs and releases lithium ions, a conductive material such as carbon black, a binder such as polyvinylidene fluoride, and the like. Disperse in pyrrolidone to form a slurry, and apply this slurry-like negative electrode mixture on both sides of the negative electrode current collector intermittently, and after drying, compress it with a roller press or the like to perform molding.
  • a negative electrode can be produced in the same manner as the positive electrode by manufacturing the material and cutting it into a predetermined size.
  • FIG. 2 is a diagram for explaining an embodiment of the laminated secondary battery of the present invention.
  • 2A is a front view
  • FIG. 2B is a cross-sectional view taken along the line AA ′ in FIG. 2A and showing an enlarged view of the stacking direction.
  • the stacked secondary battery 1 forms a stacked body 400 in which a positive electrode 100 and a negative electrode 200 are stacked via a separator 300, and a positive electrode extraction tab 115 and a negative electrode extraction tab 215 are provided in the same direction from the stacked body 400. It has been taken out.
  • the positive electrode extraction tab 115 and the negative electrode extraction tab 215 connected to the negative electrode 200 are taken out from the sealing portion 510 of the film-shaped packaging material 500.
  • the film-like exterior material a material having strength and heat resistance such as nylon or polyethylene terephthalate is used on the outer surface side of the aluminum foil, and a material having good heat fusion such as polypropylene or polyethylene is used on the inner surface side.
  • a material having strength and heat resistance such as nylon or polyethylene terephthalate is used on the outer surface side of the aluminum foil, and a material having good heat fusion such as polypropylene or polyethylene is used on the inner surface side.
  • Each layer can be used.
  • the exterior material of the stacked secondary battery is not limited to the film-like exterior material as described above, and a metal exterior container or the like may be used.
  • FIG. 3 is a plan view for explaining a chamfered portion of the positive electrode.
  • FIG. 3A is a plan view illustrating a positive electrode having a chamfered portion.
  • FIG. 3B is an enlarged view of the chamfered portion.
  • a chamfered portion 150 in which at least one corner of an intersection of adjacent peripheral lines of the projection portion on the surface parallel to the positive electrode current collector, that is, a corner portion is chamfered in a curved shape.
  • the curved portion 152 of the chamfered portion 150 has a shape different from the quadrant 151 shown by a broken line in FIG. 3A, and both end portions are connected to the two outer peripheral connection portions 153 and 154.
  • All the chamfers of the outer peripheral portion of the positive electrode including the corners 159 and 160 formed by the tangents 157 and 158 and the outer peripheral connection portions 153 and 154 at the intersections 155 and 156 of the curved portion 152 and the outer peripheral connection portions 153 and 154. It is characterized in that at least one or more of the angles formed by the tangent at the part and the outer peripheral connection part is an obtuse angle. In the present invention, the angle formed between the tangent at the intersection of the curved portion and the outer peripheral connection portion and the line of the outer peripheral connection portion is the two tangent lines extending in both directions at the two intersections of the curved portion and the outer peripheral connection portion.
  • the angle formed by the tangent line on the side that intersects each other from the intersection and the line of the outer peripheral connection portion means the angle on the side where the electrode exists, that is, the inner angle side in the case of a polygon. If the outer peripheral connection portion is a straight line, the tangent here means the direction of the straight line itself.
  • the positive electrode is caused by a slight deviation between the end of the quadrant and the outer peripheral connection portion.
  • step difference is produced in a cut part can be prevented.
  • the chamfered portion is formed with a connecting portion between the tangent at the intersection of the curved portion and the outer peripheral connecting portion and the curved portion where the angle formed by the line of the outer peripheral connecting portion is an obtuse angle.
  • the positive electrode has been described, but the negative electrode can also be manufactured in the same manner as the positive electrode.
  • the battery electrode of the present invention has a larger outer shape than the chamfered portion indicated by the quadrant 151, and therefore the battery electrode is more battery-operated than the case where the chamfered portion formed by the quadrant is formed. The effect that the effective area of an electrode becomes large and battery capacity becomes large can also be acquired.
  • the positive electrode extraction tab formation part 113 and the negative electrode extraction tab formation part 115 used as the unformed part of an active material are moved to the one side of the width direction of strip
  • the same chamfered portion can be formed even by a method in which the active material is continuously formed from the electrode and punched into a predetermined shape.
  • the outer peripheral lines of at least some of the corners of the positive electrode and the negative electrode have a curved shape as described above. It is more preferable to use the same shape when chamfering the corner.
  • FIG. 4 is a view for explaining an example of a cutting tool used for forming the chamfered portion of the present invention and the conventional one.
  • a cutting tool 600 shown in FIG. 4A is a diagram for explaining an example of a conventional cutting tool, and is a diagram showing a cross section cut along a plane parallel to the current collector surface at the time of cutting.
  • the cutting tool 600 includes a cutting blade 601.
  • the cutting blade 601 has a flat surface portion 602 and curved surface portions 603a and 603b connected to the flat surface portion 602.
  • the length between both ends of the cutting blade 601 is the same as the width of the positive electrode width PW cut from the positive electrode base material, and the cross section formed in the curved surface portions 603a and 603b is a quadrant-shaped cutting blade.
  • the end portion can be cut to coincide with the end face of the positive electrode base material, and a quadrant connected to the outer peripheral portion can be formed.
  • a quadrant is formed in the chamfered portion when the end of the cutting tool coincides with the end surface of the positive electrode base material.
  • the end portion of the cutting blade does not coincide with the end surface of the positive electrode base material, there is a problem that a part of the cutting blade is not cut or a curved chamfer is not performed.
  • a cutting tool 610 shown in FIG. 4B is a view for explaining an example of a cutting tool used for manufacturing the positive electrode of the present invention, and is a view showing a cross section cut along a plane parallel to the current collector surface at the time of cutting. is there.
  • the cutting tool 610 used for manufacturing the positive electrode of the present invention includes a cutting blade 611, and the cutting blade 611 has a flat surface portion 612 and curved surface portions 613a and 613b connected thereto.
  • the length of the flat portion of the cutting blade 611 is shorter than the width of the positive electrode width PW produced from the positive electrode base material, and the length of the curved surface portions 613a and 613b is compared with the conventional quadrant provided at both ends. Long.
  • the length between the both ends of the width direction of the positive electrode base material of a cutting tool is characterized by being longer than the length of the positive electrode width PW produced from a positive electrode base material.
  • the length between both ends in the width direction of the positive electrode base material of the cutting blade 611 is slightly longer than the positive electrode width PW.
  • the length is preferably 1 to 1.06 times considering the tolerance of each member.
  • the curved surface shape of the cutting blade can be an arc shape that is easy to manufacture, but any curved line, such as an elliptical arc, can be used as long as the linear distance from the end of the flat surface to the tip of the curved surface increases.
  • the curved shape can be used.
  • Example 1 Lithium manganate (LiMn 2 O 4 ), carbon black, and polyvinylidene fluoride were blended and dispersed in N-methyl-2-pyrrolidone to prepare a positive electrode mixture.
  • the obtained positive electrode mixture was applied to both surfaces of an aluminum foil having a thickness of 20 ⁇ m, dried, and then subjected to compression molding with a roller press machine to obtain positive electrodes having a positive electrode layer having a thickness of 80 ⁇ m on both surfaces.
  • the prepared positive electrode is attached to a cutting device, and at least a part of the chamfered portion has a curved portion and at least one outer peripheral connection portion connected to the curved portion, and the curved portion and the outer peripheral connection portion Cutting was performed by changing the angle formed between the tangent line at the intersection and the line of the outer peripheral connection portion. The same tendency was observed when cutting at two or more locations to obtain the desired shape, or when cutting only one location to obtain the desired shape. The results are shown below. Evaluation at each cutting point was performed according to the following evaluation criteria. Active material drop-off rate: When the current collector of the active material application part was exposed by visual observation, it was regarded as defective.
  • Burr generation rate Visual confirmation with a magnifying glass was performed, and those having a burr size of 60 ⁇ m or more were regarded as defective.
  • Punching defect rate If a step difference in punching deviation was confirmed by visual inspection, it was determined as defective.
  • FIG. 5 is a diagram for explaining another embodiment of the present invention.
  • FIG. 5A is a plan view for explaining the positive electrode
  • FIG. 5B is an enlarged view for explaining the chamfered portion.
  • the positive electrode 100 has a chamfered portion 150 in which at least one corner of an intersection of adjacent outer sides of the projection portion on the surface parallel to the positive electrode current collector, that is, a corner portion is chamfered in a curved shape.
  • the curved portion 152 of the chamfered portion 150 is connected to the two outer peripheral connection portions 153 and 154 at both ends.
  • At least one of the angles 159 and 160 formed by the tangents 157 and 158 at the intersections 155 and 156 between the curved portion 152 and the outer peripheral connection portions 153 and 154 and the outer peripheral connection portions 153 and 154 is an obtuse angle. It is said. Further, the outer peripheral connection portions 153 and 154 are inclined so that the outer peripheral connection portions 153 and 154 form an acute angle from the outer peripheral lines 165 and 167 of the positive electrode toward the curved surface portion 150. As a result, each corner portion forms a curved outer peripheral line formed by the curved surface and the outer peripheral connection portion, so that the effect of preventing the active material from falling off can be enhanced.
  • the chamfered portion is chamfered at the time of chamfering at least some of the corners in the insertion direction of the positive electrode and the negative electrode on the bag separator or the battery outer container.
  • the battery element is packaged with a film-like packaging material.
  • a battery can be produced by storing the battery in a metal battery can and sealing the electrolyte solution after injection.
  • the laminated secondary battery of the present invention has chamfered portions formed from curved surfaces of a specific shape at the corners of the positive electrode and the negative electrode, the positive electrode base material, the negative electrode base material to the positive electrode, Even when a positional shift occurs when the negative electrode is manufactured by cutting, a stacked secondary battery in which the positive electrode active material and the negative electrode active material are not dropped from the corners can be provided.
  • DESCRIPTION OF SYMBOLS 100 ... Positive electrode, 102 ... Positive electrode base material, 103 ... Positive electrode active material layer, 104 ... Positive electrode part outline, 105a, 105b ... Both side part, 106 ... Positive electrode 110 ... first cutting line, 112 ... second cutting line, 113 ... positive electrode extraction tab forming part, 114 ... positive electrode active material application part, 115 ... positive electrode extraction tab, 150 ... chamfered portion, 165, 167 ... positive electrode outer peripheral line, 200 ... negative electrode, 300 ... separator, 400 ... laminate, 115 ...

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

L'invention concerne une batterie secondaire de type à empilement dans laquelle le retrait d'une couche de matière active d'électrode positive et d'une couche de matière active d'électrode négative par des parties angle, est empêché. Cette batterie secondaire de type à empilement est équipée : d'une électrode positive qui possède une première partie chanfrein dans laquelle est chanfreiné au moins un endroit au point de croisement de deux côtés où un collecteur d'électrode positive revêtu de la matière active d'électrode positive est adjacent à une ligne circonférentielle d'une partie projection vers une face parallèle au collecteur d'électrode positive; d'une électrode négative qui possède une seconde partie chanfrein dans laquelle est chanfreiné au moins un endroit au point de croisement de deux côtés où un collecteur d'électrode négative revêtu de la matière active d'électrode négative est adjacent à la ligne circonférentielle de la partie projection vers une face parallèle au collecteur d'électrode négative; et d'un séparateur entre ladite électrode positive et ladite électrode négative. Au moins une partie de ladite première ou seconde partie chanfrein possède une partie courbe, et deux parties connexion périphérique externe connectées à ladite partie courbe. Enfin, au moins un ou plusieurs angles formés par la ligne desdites parties connexion périphérique externe et une ligne tangente au point de croisement de ladite partie courbe et desdites parties connexion périphérique externe, constituent des angles émoussés.
PCT/JP2012/072128 2011-08-31 2012-08-31 Batterie secondaire WO2013031938A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011189794 2011-08-31
JP2011-189794 2011-08-31

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WO2013031938A1 true WO2013031938A1 (fr) 2013-03-07

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014175247A (ja) * 2013-03-12 2014-09-22 Sanyo Electric Co Ltd 電池
JPWO2013141279A1 (ja) * 2012-03-21 2015-08-03 新神戸電機株式会社 角形非水電解液蓄電セル用極板
JP2015146232A (ja) * 2014-01-31 2015-08-13 株式会社豊田自動織機 電極の製造方法及び電極
WO2016113656A1 (fr) * 2015-01-16 2016-07-21 株式会社半導体エネルギー研究所 Pile à combustible souple et dispositif électronique
CN114173973A (zh) * 2019-07-30 2022-03-11 株式会社Lg新能源 二次电池的电极及其制造方法
WO2022176492A1 (fr) * 2021-02-17 2022-08-25 株式会社村田製作所 Électrode de batterie, son procédé de fabrication et batterie

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Publication number Priority date Publication date Assignee Title
JPH0256856A (ja) * 1988-08-20 1990-02-26 Sanyo Electric Co Ltd 電池及びその極板の製造方法
JPH09169456A (ja) * 1995-12-22 1997-06-30 Toshiba Corp シート状搬送物の巻回方法およびその巻回装置
JPH10270014A (ja) * 1997-03-27 1998-10-09 Fuji Film Selltec Kk シート状電極とこれを用いた電池
JP2000195539A (ja) * 1998-12-24 2000-07-14 Alcatel 電極がストリップによって補強された縁を有する蓄電池
JP2001160397A (ja) * 1999-12-02 2001-06-12 Sony Corp カード形固体電池用集電体の成形方法及び成形装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0256856A (ja) * 1988-08-20 1990-02-26 Sanyo Electric Co Ltd 電池及びその極板の製造方法
JPH09169456A (ja) * 1995-12-22 1997-06-30 Toshiba Corp シート状搬送物の巻回方法およびその巻回装置
JPH10270014A (ja) * 1997-03-27 1998-10-09 Fuji Film Selltec Kk シート状電極とこれを用いた電池
JP2000195539A (ja) * 1998-12-24 2000-07-14 Alcatel 電極がストリップによって補強された縁を有する蓄電池
JP2001160397A (ja) * 1999-12-02 2001-06-12 Sony Corp カード形固体電池用集電体の成形方法及び成形装置

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2013141279A1 (ja) * 2012-03-21 2015-08-03 新神戸電機株式会社 角形非水電解液蓄電セル用極板
JP2014175247A (ja) * 2013-03-12 2014-09-22 Sanyo Electric Co Ltd 電池
JP2015146232A (ja) * 2014-01-31 2015-08-13 株式会社豊田自動織機 電極の製造方法及び電極
WO2016113656A1 (fr) * 2015-01-16 2016-07-21 株式会社半導体エネルギー研究所 Pile à combustible souple et dispositif électronique
JPWO2016113656A1 (ja) * 2015-01-16 2017-12-14 株式会社半導体エネルギー研究所 可撓性を有する蓄電池及び電子機器
CN114173973A (zh) * 2019-07-30 2022-03-11 株式会社Lg新能源 二次电池的电极及其制造方法
EP3993086A4 (fr) * 2019-07-30 2022-08-24 LG Energy Solution, Ltd. Électrode pour batterie rechargeable et procédé de fabrication d'électrode
CN114173973B (zh) * 2019-07-30 2023-09-01 株式会社Lg新能源 二次电池的电极及其制造方法
WO2022176492A1 (fr) * 2021-02-17 2022-08-25 株式会社村田製作所 Électrode de batterie, son procédé de fabrication et batterie
JP7501774B2 (ja) 2021-02-17 2024-06-18 株式会社村田製作所 電池用電極およびその製造方法、ならびに電池

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