Panasonic Corporation

Takashi Nonoshita

Kiyomi Kozuki

Yasushi Hirakawa

Tadashi Imai

Masanori Sumihara

Seiichi Kato

Takeshi Kasamatsu

Shoichi Imashiku

Hitoshi Katayama

An electrodehas an active material layerformed on each of two whole main surfaces of a current collector. A part of an electrode leadoverlaps the electrode. One end face of the electrodein the width direction of the electrodeis flush with one end face of the electrode lead. Jointsare formed at the one end of the electrodein the width direction. The jointsjoin the electrodeand the electrode leadso as to provide electrical continuity between the exposed part of the current collectorat the one end face of the electrodein the width direction and the electrode lead. The jointsare formed, for example, by plasma welding.

Electrode structure for non-aqueous electrolyte secondary battery, method for producing the same, and non-aqueous electrolyte secondary battery

An electrode grouphaving a positive electrode plate and a negative electrode plate arranged with a porous insulating layer interposed therebetween and end portions of the positive and negative electrode plates protruding from the porous insulating layer is prepared, and current collector platesandeach of which is provided with a projectionhaving a gapformed therein is prepared. With the end portionof the electrode plate protruding from the porous insulating layerkept in contact with a principle surface of the current collector platesand, the projectionis locally heated to join the end portionof the electrode plate and the current collector platesand. the end portionof the electrode plate is welded to the current collector platesandwith a fused material obtained by fusing the projection

Secondary battery and method for manufacturing secondary battery

Growing community of inventors

Osaka, Japan

Takashi Nonoshita