Panasonic Corporation

Yukio Nishioka

Nario Niibo

Masashige Ashizaki

Masatoshi Tasei

Koichi Morikawa

Shinji Nakano

Masayuki Sato

Hirofumi Iwashima

A storage cell includes a storage element including first and second electrodes which are opposite to each other in a predetermined direction, a first terminal bonded to the first electrode, a second terminal bonded to the second electrode, and an outer resin covering the storage element to expose an outer surface of the first terminal and an outer surface of the second terminal from the outer resin. The storage element has substantially a rectangular shape viewing from the predetermined direction. The outer resin has substantially a rectangular shape viewing from the predetermined direction. The outer resin has first and second surfaces opposite to each other, and has a third surface connected with the first surface and the second surface. The first terminal is exposed on the first surface of the outer resin. The second terminal has a shape extending beyond the storage element along the first and third surfaces, and is exposed on the first surface. This storage cell has a small size, a large capacitance, and high reliability.

Storage cell and method of manufacturing same

A coin-type electrochemical element enables the external lead terminal portions to be accurately and reliably attached to a first lid portion and to a second lid portion of the coin-type electrochemical element, and a method of its production. A coin-type electric double layer capacitor includes a first lid portion and a second lid portion. External lead terminal portions, each having a nearly triangular shape, are separately connected to the outer surfaces of the lid portions. Upon providing the external lead terminal portions having the triangular shape, a welded portion is allowed to have an increased area enabling the coin-type electrochemical element of even a small size to be accurately and reliably welded and making it possible to provide the coin-type electrochemical element having excellent reliability.

Coin-type electrochemical element

Method of producing a coin-type electrochemical element

Growing community of inventors

Kyoto, Japan

Yukio Nishioka