Sanyo Electric Co., Ltd.

Sayno Electric Co., Ltd.

Hiroshi Hosokawa

Yasuaki Yamamoto

Yasuhiro Yamauchi

Shinji Tamaki

Wataru Shinohara

Kenji Kikuchi

Seiichi Kiyama

Makoto Komatsu

Tadashi Hayakawa

Tsukuru Kai

Junichi Matsumoto

Yuzuru Ozawa

Koji Nishio

Takayuki Hattori

Hitoshi Hirano

Keiichi Kuramoto

Yoichi Domoto

Keiichi Sano

Hiroyuki Inoue

Takahiro Nakamura

Hiroaki Izu

Ikuro Nakane

Akira Terakawa

Satoshi Ishida

Masato Nishikawa

Masayuki Terasaka

Takashi Kuwahara

Satoshi Yoshida

Kazuki Shimozono

Takashi Kondou

Etsuya Fujisaka

Kenji Inagaki

Hitoshi Kihara

Takahisa Sakakibara

Yutaka Hirono

Nobukazu Yamanishi

Kazuo Tomimoto

Haruhiko Yamamoto

Futoshi Nakano

Shinichirou Matsue

Michiharu Suzuki

Shingo Kuboki

Hideo Yoshizawa

Shunji Katoh

A groove is formed in a ring shape and a ring-shaped convexity is formed on the periphery of a through-hole of a positive electrode terminal plate. An upper end side of a crimping part of a positive electrode exterior terminal is inserted through the through-hole of the positive electrode terminal plate and crimped, and welded spots are formed by irradiation with high-energy beams between a distal end side of the crimping part and the convexity. The mechanical and electrical connection of an exterior terminal and a terminal plate to the crimping part through welding with high-energy beams makes it possible to provide a prismatic secondary battery of enhanced reliability in which cracking is less likely to occur in the welded spots, the coupling strength between the exterior terminal and the terminal plate is increased, and fluctuations in the internal resistance are curbed.

Prismatic secondary battery

A laser welding device for manufacturing a prismatic batteryof the invention has a pair of jigsA,B for securing a prismatic battery outer can B, a gas supply section for supplying inert gas to welding points of a sealing cover Bfitted to the prismatic battery outer can B, and a laser unitfor irradiating laser beam. Each of the jigsA,B is provided with a slit-shaped blower outlet and the blower outlet is positioned below the welding points. The inert gas is supplied to the blower outlet from the gas supply section and is blown from the blower outlet to the welding points from below. The laser welding device for manufacturing a prismatic batterycan obtain a laser welding device that welds the sealing cover Bfitted to the prismatic battery outer can Bfast, preventing weld droops and allowing uniform welding.

Method for manufacturing prismatic battery, and laser welding jig and laser welding device for manufacturing the same

A sealed battery according to an aspect of the invention includes: a flat electrode assemblyhaving a plurality of copper or copper alloy negative electrode substrate exposed portionsat one end; and a copper or copper alloy collectorattached to one side of the exposed portionsand a copper or copper alloy collector receiving partattached to the other side. The collectorand the collector receiving partrespectively include: a planar partincluding a part in contact with and resistance-welded to the exposed portions; a first bent partextending from the planar partand bent at the bottom side of the exposed portionsinto a direction away from the substrates; and a second bent partprovided at the leading side of the negative electrode substrate exposed portions

Sealed battery and manufacturing method therefor

A battery having a bundle of electrodes and separator which is made by winding a positive-electrode plate and a negative-electrode plate together with a separator therebetween, one of the positive- and negative-electrode plates being electrically connected to a power collecting body, the power collecting body being provided in and welded to an outer package can, wherein a welding portion of the outer package can and the power collecting body comprises a first layer and a second layer which are stacked in a thickness direction of the outer package can at the welding portion, and the second layer is in contact with a surface of the first layer and includes crystal grains that are minuter than crystal grains included in the first layer.

Battery and battery manufacturing method

A method of manufacturing a sealed battery that is able to keep productivity as high as possible while suppressing cracking incident to welding using an energy beam, such as a laser beam. A material such as an aluminum alloy is used for the external casing and the cover plate. The cover plate bas a rib, which is formed on the outer edge of the cover plate, and a flat part. The external casing rim and the outer edge of the cover plate are welded together, the thickness of the external casing at the rim is made small. A closure cap is fit into the external casing. The closure cap and external casing are welded together and the molten part is gradually cooled.

Method of manufacturing sealed battery and sealed battery

The object of the present invention is to provide a sealed battery and a manufacturing method of a sealed battery that suppresses cracking incident to welding using an energy beam, such as a laser beam, when a material such as an aluminum alloy is used for the external casing and the cover plate, with keeping the productivity as high as possible. In order to realize the object, a rib is formed on the cover plate, and the thickness of the external casing at the rim is made small, and the rib and the rim of the external casing are welded together in manufacturing the sealed battery. Then, the closure cap and the external casing are welded together using a laser the energy distribution of which has a flat part in manufacturing the sealed battery to realize the object. In addition, the closure cap and the external casing are welded together while the molten part is gradually cooled in manufacturing the sealed battery to realize the object.

Method of manufacturing enclosed battery and enclosed battery

The battery has an electrode assembly inserted into a cylindrical external case. A lead plate connected to the electrode assembly is weld attached to the inner surface of the external case by an energy beam applied from outside the external case. The external case has a projection jutting from its inner surface. The energy beam is applied to the projection from outside the external case and weld attaches the lead plate to the inner surface of the projection.

Battery having welded lead plate

A method of removing a prescribed portion of a semiconductor film or a metal film involves irradiating the prescribed portion to be removed with a first energy beam, and then with a second energy beam. The energy densities and beam widths of the first and second energy beams are each separately controlled or selected to avoid damaging an underlayer under the film and to reduce or avoid deformation of a periphery around the removed portion.

Methods of removing semiconductor film with energy beams

The body of a micromachine has a plurality of energy-power converting means for receiving different forms of energy including rays, microwaves and sound waves and converting the different forms of energy to electric power, i.e., photoelectromotive devices, a microwave-power converter and an acousto-electromotive device. The electric power obtained by these means is supplied to a drive system and an operation system incorporated in the machine body.

Micromachines

In a method of modifying a transparent conductive oxide film and in a method of manufacturing a photovoltaic device, a transparent conductive oxide film is irradiated with an energy beam for increasing the carrier concentration and thereby reducing the resistance of the transparent conductive oxide film.

Method of modifying transparent conductive oxide film including method

A metallic insulative substrate having its surface coated with an insulative layer, on which a large number of photoelectric converter elements are electrically connected to each other in series by connecting the first back electrode layer of one of photoelectric converter elements adjoining each other with the second back electrode layer of the other. Accordingly, electrical connection of these electrode layers in series does not affect the effective area used for photoelectric conversion. This constitution also improves heat resistance of the insulative substrate. Electrical contact of the transparent light-receiving electrode layer) and the second back electrode layer is achieved via contact holes each having a diameter identical to the diameter of those of the insulative and semiconductive layers. As a result, a sufficient insulative distance is provided between the transparent electrode layer and the first back electrode layer so that occurrence of accidental shortcircuit can be securely prevented.

Photovoltaic device

Growing community of inventors

Moriguchi, Japan

Hiroshi Hosokawa