Toyota Jidosha Kabushiki Kaisha

Panasonic Holdings Corporation

Tomofumi Hirukawa

Keisuke Takano

Kengo Haga

Tetsumasa Maruo

A manufacturing apparatus for an electrode plate includes: a conveyance line of the electrode plate having an applied portion in which an electrode active material is applied to a surface of a base material and a non-applied portion in which the electrode active material is not applied to the surface of the base material; a compression roll provided in the conveyance line and compressing the applied portion; and a tension reducing mechanism provided in at least one of an upstream section ending at the compression roll or a downstream section starting at the compression roll in the conveyance line and reducing a tension applied to the electrode plate.

Device for manufacturing electrode plate and method for manufacturing electrode plate

A main object of the present disclosure is to provide a method for producing an electrode of which uncoated part can stretch while inhibiting breakage. The present disclosure achieves the object by providing a method for producing an electrode, the method including: a preparing step of preparing a precursor sheet including a metal foil, and a coated part and an uncoated part, arranged on the metal foil; a coated part pressing step of pressing the coated part in a thickness direction; and an uncoated part pressing step of pressing the uncoated part in the thickness direction, before or after the coated part pressing step; wherein the coated part contains an electrode material including at least an active material; the uncoated part does not contain the electrode material, and is arranged in an edge of the coated part; and in the uncoated part pressing step, the uncoated part is roll-pressed by a pair of an elastic roll including a shaft body and an elastic body covering the shaft body, while the uncoated part is pushed against the thickness direction.

Method for producing electrode

A method for manufacturing an electrode belt that includes pressing a belt-shaped current collector foil with an electrode mixture layer along a longitudinal direction in a thickness direction of the electrode mixture layer so that the electrode mixture layer is formed on a part of the current collector foil, and stretching, by a stretching roll, a non-forming part of the current collector foil in which the electrode mixture layer is not formed and in which the current collector foil is exposed in respective ends in a width direction. The stretching roll includes a first roll opposed to the electrode mixture layer, and a pair of second rolls arranged in respective ends of the first roll in an axial direction and opposed to the non-forming part. A central axis of the first roll is deviated with respect to a central axis of the pair of second rolls.

Method for manufacturing belt-like electrode with electrode mixture layer formed on current collector foil along longitudinal direction

An apparatus for manufacturing a belt-like electrode including: a pair of press rolls configured to press a belt-like current collector foil with an electrode mixture layer along a longitudinal direction in a thickness direction of the electrode mixture layer; and a stretching roll configured to stretch a non-forming part which is the current collector foil without the electrode mixture layer in respective ends in a width direction is provided. The stretching roll includes: a first roll opposed to the electrode mixture layer formed in the current collector foil; and a pair of second rolls arranged in respective ends of the first roll in an axial direction and opposed to the non-forming part, and a central axis of the first roll is deviated with respect to a central axis of the pair of second rolls in a direction away from the stretched current collector foil.

Apparatus and method for manufacturing belt-like electrode

A method for manufacturing an electrode sheet including an electrode layer on both surfaces of a current collecting foil includes: feeding out an original electrode sheet including an unfinished electrode layer on each surface of the foil from a feeding part; causing a press roll pair to contact with the original sheet fed out to form the unfinished layers into electrode layers; receiving the sheet having passed through the roll pair by a sheet receiving part; and rotating rolls of the roll pair in a feeding direction. The feeding part, roll pair, and receiving part are placed such that the original sheet and the electrode sheet are to be wound on one of the rolls. The rolls are rotated such that a moving speed of cylindrical surface of one roll placed in a position where the sheets are wound thereon is higher than that of the other roll.

Method and apparatus for manufacturing an electrode sheet

A method includes performing roll pressing such that a first electrode mixture layer and a second electrode mixture layer are compressed in a thickness direction of the first electrode mixture layer and the second electrode mixture layer by passing an electrode sheet through a gap between a seventh roll and an eighth roll facing each other and rotating. When performing the roll pressing, Tas a surface temperature of the seventh roll disposed on the first electrode mixture layer side and contacting the first electrode mixture layer and Tas a surface temperature of the eighth roll disposed on the second electrode mixture layer side and contacting the second electrode mixture layer satisfy a relationship of T&#x3c;T

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Miyoshi, Japan

Tomofumi Hirukawa