Toyota Jidosha Kabushiki Kaisha

Zeon Corporation

Yasuhiro Sakashita

Koichi Tanihara

Yuji Shibata

Hiroyuki Sekine

Naohiro Hasama

Ryo Nakatani

Kazuhiro Suzuki

Takenori Ikeda

Yuya Kitagawa

Takahiro Ogawa

Masahiro Umeda

Eiji Orisaka

Takeyuki Ozaki

Yuto Hosono

A method of manufacturing a lithium-ion secondary battery electrode sheet includes the steps of: conveying a current collector () coated with a binder solution (); feeding a powder material () of granulated particles () onto the current collector () while guiding the powder material () of the granulated particles () toward a gap between the current collector () and a squeegee member () disposed so as to be spaced with the gap from the current collector () being conveyed; and shaping the powder material () of the granulated particles () fed on the current collector () by using a squeegee member ().

Method of manufacturing lithium-ion secondary battery electrode sheet

The present invention discloses a method of manufacturing a lithium-ion secondary battery electrode. The method includes the steps of: supplying composite particles (), each containing an active material () and a binder (), onto a sheet collector (); and rolling the composite particles () supplied onto the collector (), thus forming an active material layer (). The rolling step includes a first rolling sub-step involving first rolling, and a second rolling sub-step to be performed after the first rolling sub-step. Rubber rolls (R) are preferably used in the first rolling sub-step.

Method of manufacturing lithium-ion secondary battery electrode

A method for producing an electrode for lithium ion secondary batteries proposed herein includes: a step of forming a binder coat layeron a collector, with the binder coat layerbeing formed so as to have a large coat amount regionA of relatively a large coating amount and a small coat amount regionB of relatively small coating amount, and the large coat amount regionA being provided at both side edge portionsE of the binder coat layer; a step of supplying granulated particles containing active material particles and a binder, onto the binder coat layer; and a step of forming an active material layer by pressing of aggregates of the granulated particles.

Method for producing electrode for lithium ion secondary batteries

A granulated body manufacturing apparatus includes: a housing that includes a cylindrical internal space, is disposed so that a center axis direction of the internal space is horizontal, and houses a raw material for a granulated body inside the internal space; an agitation blade that is provided along an inner circumferential surface of the internal space, and upon being rotated around the center axis, scoops up the raw material accumulated in a bottom portion of the internal space and makes the raw material fall down from an upper position inside the internal space; and a crossing blade including a wire having a wire diameter not exceeding 0.3 mm, the wire being provided at a position in a range, inside the internal space, in which the crossing blade does not come into contact with the agitation blade, and being looped around a framework body that rotates around the center axis.

Granulated body manufacturing apparatus and method

Provided is a technique capable of evenly smoothing powder supplied to the surface of a supply member. A powder coating apparatus includes a pair of press rollers, hoppers, and squeegee rollers disposed such that prescribed gaps are formed between the squeegee rollers and the press rollers, and adjusting thickness of the powder by smoothing the powder supplied to each outer circumferential surface of the press rollers. The powder coating apparatus presses the powder, smoothed by the squeegee rollers, between the press rollers to form compressed powder layers on both the surfaces of the web. The squeegee roller is formed in a column having an axis being parallel to the outer circumferential surface of the press roller and being orthogonal to a moving direction of the outer circumferential surface of the press roller.

Powder coating apparatus and method for manufacturing electrode for lithium ion battery using the same

A powder supplying device () includes a case () in which a storage portion () is formed for temporarily storing powder (), the case () having an inlet () formed in an upper end of the storage portion (), and a rectangular outlet () formed in a lower end of the storage portion (); a rotor () that is arranged in the case () and transports the powder () in the storage portion () to the outlet () by rotating; and a mesh body () through which the powder () that has been transported to the outlet () passes. The powder supplying device () supplies the powder () onto an upper surface of an electrode foil (). The rotor () has a brush-like shape, with a plurality of hair members () radially implanted pointing radially outward with an axial center (G) of the rotor () as the center.

Powder supplying device and electrode manufacturing apparatus

Provided is an apparatus for manufacturing an electrode for a lithium ion secondary battery that makes it possible to form a more uniform active material layer by using granulated particles. The manufacturing apparatus includes: a conveying mechanism, a supply unit, a squeegee, an adjustment unit, and rolling rolls. The conveying mechanism conveys a collector. The supply unit supplies granulated particles, including active material particles and a binder, onto the surface of the conveyed collector. The squeegee levels the supplied granulated particles. The adjustment unit is disposed upstream of the squeegee. The adjustment unit controls the accumulation height of the granulated particles accumulated upstream of the squeegee. The rolling rolls roll the leveled granulated particles and form the active material layer.

Apparatus for manufacturing electrode for lithium ion secondary battery

Provided is a powder supply device for a secondary battery which can always supply a fixed amount of powder with high accuracy without being influenced by a state of the powder. In addition, provided is an apparatus for manufacturing an electrode body, which includes the powder supply device and can efficiently manufacture an electrode body. The powder supply device includes a rotor which makes powder fall into an opening, and a mesh body which covers the lower end of the opening. Uneven portions or projecting portions are formed on the outer circumferential surface of the rotor. The rotor is rotatably supported in a storing portion. The gap is formed between the outer circumferential surface of the rotor and the inner surface of the storing portion so that they are spaced apart. The mesh body is arranged away from the outer circumferential surface of the rotor.

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Nissin, Japan

Yasuhiro Sakashita