Nissan Motor Company Limited

Kazuyuki Yoda

Tomohiro Kaburagi

Yusuke Emori

Hideaki Horie

Yuki Kusachi

Yuichiro Yokoyama

Eiji Minegishi

Hiroshi Kubota

Takuya Sakurai

Masanori Shimada

Hideki Ishitani

Hajime Satou

Yusuke Mizuno

Noboru Yamauchi

Shinichi Akaishi

Shigeo Watanabe

Makoto Nishiguchi

Koh Hatanaka

A method of manufacturing a battery electrode includes a powder supply step, a vibration step, a sorting step, a moving step, and a deposition step, in the powder supply step, a powdercomposed of granulated particles is supplied, in the vibration step, vibration is applied to the powder, in the sorting step, the powder is caused to pass through at least one opening H, Hto adjust a particle diameter of the granulated particles to a particle diameter that allows passing through the opening, in the moving step, the powder that has passed through the opening is moved from an outlet position Pof the opening to a supply position Pwhere the powder is supplied to the surface of a current collector, and in the deposition step, the powder is deposited on the surface of the current collector. With the method of manufacturing a battery electrode, it is possible to provide a battery electrode that can improve battery performance by making a thickness and a density of the powder composed of granulated particles supplied onto the current collector uniform.

Method of manufacturing battery electrode

A manufacturing method is provided for manufacturing an electrode for a lithium-ion battery having a current collector and an electrode active material layer. In the method, an electrolytic solution is added to particles created by pulverizing a mixture containing electrode active material particles and a pressure sensitive adhesive resin to obtain an electrode active material composition. The electrode active material composition is molded into sheet form on a current collector using a roll press. The electrode active material composition has a weight of the electrolytic solution based on a total weight of the electrode active material composition that is 0.1-50 wt %.

Method for manufacturing electrode for lithium ion battery

A battery manufacturing method includes forming a unit cell having a positive electrode that is obtained by a positive electrode active material layer containing an electrolytic solution being disposed on a positive electrode current collector, a negative electrode that is obtained by a negative electrode active material layer containing an electrolytic solution being disposed on a negative electrode current collector, and a separator interposed between the positive electrode and the negative electrode. The battery manufacturing method further includes applying pressure to one unit cell or with two or more stacked unit cells from the stacking direction, and charging the one unit cell or the two or more stacked unit cells after applying of the pressure. The method is performed such that the positive electrode and the negative electrode are formed without an application film being subjected to a drying process performed through heating.

Battery manufacturing method

A battery manufacturing method includes forming a unit cell having a positive electrode that is obtained by a positive electrode active material layer containing an electrolytic solution being disposed on a positive electrode current collector, a negative electrode that is obtained by a negative electrode active material layer containing an electrolytic solution being disposed on a negative electrode current collector, and a separator interposed between the positive and negative electrodes. Heat sealing a seal part that is disposed at an outer peripheral portion of the unit cell. Cooling the outer peripheral portion of the unit cell by using a cooling medium after carrying out the heat sealing of the seal part. The method is performed such that the positive electrode and the negative electrode are formed without an application film being subjected to a drying process performed through heating.

A method for manufacturing a battery has a stacking step in which a plurality of unit cells are stacked, the unit cells being such that a positive electrode obtained by a positive electrode active material layer containing an electrolytic solution disposed on a positive electrode current collector, and a negative electrode obtained by a negative electrode active material layer containing an electrolytic solution disposed on a negative electrode current collector with a separator interposed therebetween. In the stacking step, each time one of the unit cells is stacked, the stack of the unit cells are pressed from the stacking direction.

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Kanagawa, Japan

Kazuyuki Yoda