Panasonic Corporation

Sanyo Electric Co., Ltd.

Sadahiro Hattori

Atsushi Ueda

Kyosuke Miyata

Koji Funami

Kazumichi Shimizu

Shinya Mori

Takaaki Kassai

Ryunosuke Yokoo

Yusuke Tominaga

Shota Ikeda

A sealed cell includes a bottomed cylindrical outer casing can. The outer casing can is formed by nickel-plated iron, and a lead connected to one of a positive electrode and a negative electrode, and the outer casing can, are welded by a welding part formed from the outside surface of the outer casing can toward the lead. The welding part is formed by molten traces and has a first layer and a second layer having a higher nickel concentration than the first layer. The first layer is formed from the lead through to the inside of the outer casing can, the second layer is formed so as to adjoin the first layer on the outside surface side of the outer casing can, and the whole of the first layer is covered with the second layer when the welding part is viewed from the outside of the outer casing can.

Sealed cell and method for manufacturing same

Growing community of inventors

Kanagawa, Japan

Sadahiro Hattori