Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Nippon Yakin Kogyo Co., Ltd.

Masashige Ashizaki

Nario Niibo

Koichi Morikawa

Masayuki Sato

Masatoshi Tasei

Yukio Nishioka

Masayuki Taniguchi

Isamu Nishiyama

Yutaka Kobayashi

Shinji Nakano

Yasuyuki Ito

Yukiyasu Sugihara

Eri Hirose

Hiroaki Higashino

Hideki Imai

Hirofumi Iwashima

Masayuki Shinjou

Eri c/o Panasonic Corporation Iproc Hirose

Koichi c/o Matsushita Electric Industrial Co Ltd Morikawa

Yutaka Yakin Kawasaki Co Ltd Kobayashi

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 electric double-layered capacitor of the present invention includes: a capacitor element; a lower cover for housing the capacitor element impregnated with an electrolyte; an upper cover for sealing an opening of the lower cover through an insulating ring-shaped packing; an upper terminal plate having one end portion connected to an outer surface of the upper cover; and a lower terminal plate having a first end portion connected to an outer surface of the lower cover and a second end portion provided with a through hole, the capacitor being configured such that at least part of the through hole is opened without being covered by an outer surface located on a bottom of the lower cover.

Coin type electric double-layered capacitor, and capacitor-packaged element

An electric double layer capacitor has an element, a first terminal, a second terminal, a resin-made case, and a resin-made lid. A pair of electrodes are led out of the element. Each of the electrodes is connected to each of the first terminal and the second terminal. The element and an electrolyte are accommodated in the case having an opening top surface, and the lid is bonded to the top surface of the case. The joints of the first and second terminals are disposed at positions higher than the inner bottom of the case, and are exposed upward. The rims of the joints and intermediate conductive sections continuing from them are buried in the case, and the terminal sections continuing from the intermediate conductive sections are led from the side surface of the case to the outside.

Electric double layer capacitor having a first terminal having a first joint and a second terminal having a second joint

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

A coin-shaped storage cell () has a pair of polarizable electrodes (), an insulating separator () interposed between the polarizable electrodes, an electrolytic solution () impregnated in the polarizable electrodes () and the separator (), a metal case () for housing the polarizable electrodes (), an insulating ring packing () arranged in the metal case, and a top lid () which is caulked integrally with the metal case () via the ring packing (). The inner bottom surface of the metal case () is provided with recessed and projected portions.

Coin-shaped storage cell

There is provided a casing material for a storage cell having sufficient corrosion resistance and strength even under a charging environment of a high voltage exceeding 2.8 V. This casing material for the storage cell comprises C: not more than 0.03 mass %, Si: 0.01-0.50 mass %, Mn: not more than 0.20 mass %, P: not more than 0.04 mass %, S: not more than 0.0010 mass %, Ni: 20.0-40.0 mass %, Cr: 20.0-30.0 mass %, Mo: 5.0-10.0 mass %, Al: 0.001-0.10 mass %, N: 0.10-0.50 mass %, Ca: not more than 0.001 mass %, Mg: 0.0001-0.0050 mass %, 0: not more than 0.005 mass %, provided that contents of Cr, Mo and N satisfy Cr+3.3&#xd7;Mo+20&#xd7;N&#x2267;43, and the balance being substantially Fe and inevitable impurities, in which a content of CaO as an oxide inclusion in steel is not more than 20 mass %.

Material of case for storage cell

Energy storage device

As a storage cell for surface mounting which reduces the mounting area, increases the reliability of soldering and realizes high-density mounting, provided is a storage cell for surface mounting having: a polar storage cell housing a component between a case and a top cover and sealed with an insulator; an anode terminal connected to an outer surface of the case; and a cathode terminal connected to an outer surface of the top cover. In this storage cell, the anode terminal is provided with an external connection connected to a printed wiring board, the cathode electrode is provided with a mounting-fixing portion connected to an external connection connected to the printed wiring board and the top cover, and a plated layer is formed on the external connections of the anode terminal and cathode terminal and on the mounting-fixing portion of the cathode terminal.

Storage cell for surface mounting

Growing community of inventors

Osaka, Japan

Masashige Ashizaki