Abstract: A method of producing an electrode mixture paste includes a kneading process in which an electrode active material, a conductive material, a binding material, a dispersant and a non-aqueous solvent are kneaded to obtain an electrode mixture paste and an ultrasonic wave application process in which ultrasonic waves are applied to the electrode mixture paste without evaporating the non-aqueous solvent from the electrode mixture paste.

Abstract: A coating device includes a backup roll configured to transport a workpiece; a coating die configured to discharge a coating liquid onto the workpiece; a drive section capable configured to drive the backup roll; and a heat dissipation section configured to dissipate heat generated in the drive section.

Abstract: A method for manufacturing a rechargeable battery includes forming a mixture layer and an insulating layer on an electrode substrate having an edge extending in a specified direction so that an exposed portion where the electrode substrate is exposed extends between the edge and the insulating layer; pressing the mixture layer; and stretching an extension portion, located between the edge and the mixture layer, and the insulating layer in the specified direction. The stretching includes applying a stress greater than or equal to yield stress of the electrode substrate or greater than or equal to 0.2% proof stress of the electrode substrate and less than tensile strength of the electrode substrate to the extension portion, and applying a stress greater than or equal to yield stress of the insulating layer or greater than or equal to 0.2% proof stress of the insulating layer to the insulating layer.

Abstract: A roll exchange mechanism for a reduction roll apparatus, capable of contributing to simplifying work for replacing a roller is provided. A roll exchange mechanism for a reduction roll apparatus according to the present disclosure includes a rail member disposed parallel to a rotation shaft of a roller of the reduction roll apparatus, a placement part disposed in a support frame of a roll unit and configured to be placed on the rail member, a receiving part disposed in an apparatus frame of the reduction roll apparatus and configured so that the rail member is placed thereon, and an opening formed in the apparatus frame of the reduction roll apparatus and configured so that the roll unit can be inserted therein and removed therefrom.

Abstract: An inspection apparatus includes a support, an image capturing unit, and a controller. The support supports a workpiece. The image capturing unit generates captured image data including an image of the workpiece. The controller executes image processing on the captured image data to evaluate the workpiece. The support includes an engraved portion, including a groove and serving as a reference for inspection, on a surface of the support in a non-contact region that is free from contact with the workpiece. The engraved portion is included in an image capturing range of the image capturing unit. The controller evaluates the workpiece using a dimension of the engraved portion that is stored in the controller in advance and a reference image that is an image of the engraved portion.

Abstract: In a press roll apparatus, bearing portions rotatably support end portions on both sides of a pair of press roll portions, respectively. Each of the bearing portions includes a bearing body portion, a rolling bearing, and a pair of oil seal portions. The bearing body portion has an annular shape, and the press roll portion is inserted. The rolling bearing is positioned on the side of the press roll portion inserted into the bearing body portion as viewed from the bearing body portion, and rotatably supports the press roll portion. The rolling bearing is coated with lubricant. The oil seal portions are positioned on both sides in the first direction as viewed from the rolling bearing. The oil seal portions are connected to the bearing body portion. The oil seal portions are positioned so as to be spaced from the press roll portion inserted into the bearing body portion.

Abstract: A measurement method includes a step of measuring an object to be measured and a reference object by a first measurement unit and a second measurement unit. The first measurement unit has a first displacement meter and a second displacement meter that face each other in a first direction and measure the distance from the object to be measured. The second measurement unit has a third displacement meter and a fourth displacement meter that face each other in the first direction and measure the distance from the reference object. A frame-like supporting member includes a first frame portion supporting the first displacement meter and the third displacement meter, a second frame portion supporting the second displacement meter and the fourth displacement meter, and a third frame portion and a fourth frame portion that connect both end portions of the first frame portion and the second frame portion to each other.

Abstract: A producing method for a positive electrode plate includes a positive electrode paste preparing process of preparing a positive electrode paste including carbon nanotubes, positive active material particles, and a solvent, a coating process of coating the positive electrode paste on a surface of a current collector to form a positive electrode paste layer on the surface of the current collector, and a drying process of drying the positive electrode paste layer to form a positive electrode mixture layer. The carbon nanotubes have the characteristics of being attracted by magnets, and the carbon nanotubes included in the positive electrode paste layer are attracted toward a side of the current collector by the magnets at least any one of directly before the drying process or during the drying process.

Abstract: A producing method for a positive electrode plate includes a second coating process of coating a second positive electrode paste on either a surface of a first positive electrode paste layer which is formed on a current collector or a surface of a positive electrode mixture layer that has been formed by drying the first positive electrode paste layer, a drying process of drying the first positive electrode paste layer with the second positive electrode paste layer or a drying process having a first step of drying the first positive electrode paste layer to form the first positive electrode mixture layer and a second step of drying the second positive electrode paste layer coated on the surface of the first positive electrode mixture layer to form the positive electrode mixture layer. An average length of first carbon nanotubes is longer than an average length of second carbon nanotubes.

Abstract: An optical axis adjustment jig includes a main unit portion that is configured to be disposed between a pair of head units, and is fashioned in a flat plate shape. The main unit portion includes a reference portion for adjusting a distance between the head units, and an inclination of an optical axis of each of the head units, and a screen portion for aligning the optical axes of the head units. The reference portion and the screen portion are disposed arrayed in a direction orthogonal to a thickness direction of the main unit portion.

Abstract: A method for manufacturing slurry for an insulation protective layer of a rechargeable battery includes obtaining an insulation material calibration curve showing a relationship between particle size and compressibility of an insulation material using sets of particle size and compressibility of the insulation material, obtaining a binder calibration curve showing a relationship between particle size and compressibility of a binder using sets of particle size and compressibility of the binder, measuring particle sizes of the insulation material and the binder loaded, determining an optimal mixture weight ratio with reference to the curves so that compressibility of mixture powder of the insulation material and the binder equals a set compressibility based on the measured particle sizes, mixing the insulation material and the binder at the determined mixture weight ratio to form mixture powder, loading the mixture powder into a powder dispenser, and adding a solvent to the mixture powder.

Abstract: An apparatus for manufacturing an electrode body includes a coater and an attraction magnet. The coater applies a mixture paste including an electrode active material to a substrate that is configured to be a current collector. The attraction magnet is opposed to an applied layer of the mixture paste formed on the substrate so that when the mixture paste contains a metal object, the attraction magnet attracts the metal object so as to change a shape of a surface of the applied layer.

Abstract: A method for manufacturing a rechargeable battery includes a simultaneous coating process for simultaneously coating an electrode substrate with one strip of a mixture paste and two strips of an insulation paste dispensed from a dispenser so that each widthwise end of the strip of the mixture paste is adjacent to a different strip of the insulation paste. The simultaneous coating process includes a gap adjustment process for changing a distance between the dispenser and the electrode substrate based on a coating width of the mixture paste, detected in the simultaneous coating process by an image inspection unit, so that the coating width of the mixture paste approaches a target value.

Abstract: A method for manufacturing a rechargeable battery includes forming a mixture layer and an insulating layer on an electrode substrate having an edge extending in a specified direction so that an exposed portion where the electrode substrate is exposed extends between the edge and the insulating layer; pressing the mixture layer; and stretching an extension portion, located between the edge and the mixture layer, and the insulating layer in the specified direction. The stretching includes applying a stress greater than or equal to yield stress of the electrode substrate or greater than or equal to 0.2% proof stress of the electrode substrate and less than tensile strength of the electrode substrate to the extension portion, and applying a stress greater than or equal to yield stress of the insulating layer or greater than or equal to 0.2% proof stress of the insulating layer to the insulating layer.

Abstract: A manufacturing method of a belt-shaped electrode plate includes: forming an active material layer by drying a wet active material layer by heating in a drying furnace; and bringing n pieces of cooling rolls or the like into contact with the belt-shaped electrode plate carried out from the drying furnace, so as to cool down the belt-shaped electrode plate by the cooling rolls or the like while the belt-shaped electrode plate is bent in the thickness direction and conveyed in the longitudinal direction by the cooling rolls or the like. The n pieces of cooling rolls or the like are disposed such that a contact length is shorter as a temperature difference of the belt-shaped electrode plate is larger.

Abstract: A method of producing an electrode mixture paste includes a kneading process in which an electrode active material, a conductive material, a binding material, a dispersant and a non-aqueous solvent are kneaded to obtain an electrode mixture paste and an ultrasonic wave application process in which ultrasonic waves are applied to the electrode mixture paste without evaporating the non-aqueous solvent from the electrode mixture paste.

Abstract: A manufacturing method of a belt-shaped electrode plate includes: forming an active material layer by drying a wet active material layer by heating in a drying furnace; and bringing n pieces of cooling rolls or the like into contact with the belt-shaped electrode plate carried out from the drying furnace, so as to cool down the belt-shaped electrode plate by the cooling rolls or the like while the belt-shaped electrode plate is bent in the thickness direction and conveyed in the longitudinal direction by the cooling rolls or the like. The n pieces of cooling rolls or the like are disposed such that a contact length is shorter as a temperature difference of the belt-shaped electrode plate is larger.

Abstract: Provided is an application device for applying and spreading an application liquid to and on a predetermined application area of a target surface, which is capable of smearing the application liquid on the application area. The application device (D) includes a brush unit (4) having a brush bristle bundle (41a), and performs a step of causing, while moving a nozzle orifice (32a) of a dispenser (3) along at least a portion of the surface of a rivet (S1) and an area of a wall (Sp) surrounding the base of the rivet (S1), a sealing liquid to be ejected from the nozzle orifice (32a) and to adhere to the portion, and thereafter, a step of spreading the adhering sealing liquid by causing the brush bristle bundle (41a) to slide on the surface of the rivet (S1) and the area of wall (Sp) surrounding the base of the rivet (S1).

Abstract: In a method of manufacturing a lithium ion secondary battery, first, lithium nickel manganese oxide which is a positive electrode active material is exposed to fluorine-based gas to form a coating film containing amorphous lithium fluoride on a surface of the positive electrode active material. Next, a phosphate compound is added to the positive electrode active material on which the coating film containing the lithium fluoride is formed. After a lithium ion secondary battery which includes a positive electrode including the positive electrode active material is formed, the lithium ion secondary battery is charged to form a coating film containing amorphous lithium phosphate on the surface of the positive electrode active material.

Abstract: Provided is a sound-transmitting waterproof film having waterproof performance and stable sound-transmitting performance in a wide tonal range. The sound-transmitting waterproof film includes a porous film of a synthetic resin, and has a water pressure resistance of 10 to 400 kPa in accordance with a JIS L 1092 method B (a high water pressure method) and has an acoustic loss of less than 10 dB at a frequency of 1 kHz, an acoustic loss of less than 5 dB at a frequency of 2 kHz, and an acoustic loss of less than 5 dB at a frequency of 5 kHz in sound-transmitting performance tests.