Panasonic Intellectual Property Management Co., Ltd.

Akio Kaneyama

Akira Kawase

Kazuyoshi Honda

Kazuhiro Morioka

Yasutaka Tsutsui

Kouji Nishida

A method for manufacturing a battery includes (a) laminating an insulating layer on a part of at least one surface of at least one first collector, (b) laminating at least one power-generating element in which an electrode active material layer, a solid electrolyte layer, and a counter-electrode active material layer are laminated in this order and the at least one first collector on which the insulating layer is laminated such that the electrode active material layer covers the insulating layer, (c) cutting, in a laminating direction at a position where the insulating layer is divided, the at least one first collector on which the at least one power-generating element are laminated, and (d), before or after cutting the at least one power-generating element in the cutting (c), laminating a second collector on a surface of the at least one power-generating element that is opposite to the at least one first collector.

Method for manufacturing battery

A battery includes a positive electrode current collector, a positive electrode active material layer, a solid electrolyte layer, a negative electrode active material layer, a negative electrode current collector, and a sealing member. In plan view, the negative electrode active material layer is larger than the solid electrolyte layer. In plan view, each of the positive electrode current collector and the negative electrode current collector is larger than the negative electrode active material layer. In plan view, the sealing member is located outside the solid electrolyte layer. In cross-sectional view perpendicular to a laminating direction, the sealing member is disposed in a region sandwiched between a part of the positive electrode current collector and a part of the negative electrode active material layer and a region sandwiched between another part of the positive electrode current collector and a part of the negative electrode current collector.

Battery

A battery includes a unit cell, which includes an electrode layer and a counter electrode layer facing the electrode layer, an electrode current collector in contact with the electrode layer, a counter electrode current collector in contact with the counter electrode layer, and a seal between the electrode current collector and the counter electrode current collector. The unit cell is disposed between the electrode current collector and the counter electrode current collector. At least one selected from the group consisting of the electrode current collector and the counter electrode current collector has at least one recess facing the seal.

Growing community of inventors

Osaka, Japan

Akio Kaneyama