Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Sanyo Electric Co., Ltd.

Seiji Kumazawa

Koji Funami

Takayuki Ashida

Takahiro Fukuoka

Kyosuke Miyata

Tomomi Tanaka

Yukio Harima

Masami Ito

Osamu Uchida

Kazumasa Takata

Wataru Okada

Izuru Nakai

Hidenao Kataoka

Yasushi Taniguchi

Yoshiro Kitamura

Kazuhiro Ikurumi

Shinya Mori

Takayuki Hirose

Seiichi Kato

Yasuo Nishihara

Yoshihiro Shiotsu

Toshiyuki Okada

Masahiro Kuwabara

Tutomu Sakurai

Masazumi Adachi

Hiroaki Takano

Yohei Takechi

Yosuke Kawahito

Daisuke Shioga

Weld structures of metal members include: a first member; and a second member that is layered together with the first member, wherein at least one first solidified part that extends from a surface of the first member to the inside of the first member, at least one second solidified part that is formed by a molten area extending through the first member and the second member, and at least one third solidified member that is formed by a molten area extending through the first member and the second member are provided, and the third solidified part is located closer to a non-layered surface of the second member than the second member is.

Weld structure of metal member and welding process

A welding structure for a metal member includes a first member containing a metal member, a second member containing a metal member, a first solidifying portion, a second solidifying portion, and a third solidifying portion. The first solidifying portion is present from a first surface to a second surface of the first member. The second solidifying portion has a first end that is present in the second member and a second end that is connected to the first solidifying portion. The third solidifying portion has a first end that is present in the second member and a second end that is connected to the first solidifying portion. The third solidifying portion is shorter than the second solidifying portion. The second solidifying portion and the third solidifying portion are separated from each other in the second member.

Welding structure and welding method for metal member

A highly reliable joined structure and joining method by suppressing peeling at joined portions in the joined structure formed by joining metals together is provided. A joined structure includes a plurality of metals laminated and joined together. The plurality of metals are shaped to include a plurality of convex portions arranged on a surface positioned in a lamination direction, and flat portions arranged between the plural convex portions. Tip ends of the plurality of convex portions are formed as curved surfaces.

Joined structure and joining method

A plurality of battery cells are connected by a busbar. Electrode terminals of the battery cells each include a protruding portion and a welding surface around the protruding portion. The busbar includes a welding plate portion being in surface-contact with the welding surface and having a cut-away portion for guiding the protruding portion, and an exposure gap that exposes the welding surface between the inner side of the cut-away portion and the protruding portion. The busbar is welded to the welding surface in a predetermined welding width (H) by both of a fillet weld part and a penetration welding portion such that the inner edge of the cut-away portion as the fillet weld part is welded to the welding surface, and the boundary between the busbar and the welding surface is welded by the penetration welding portion.

Battery system for laser-welding a busbar to electrode terminals and connecting battery cells in a low resistance state

A welded metal component, includes: a first component; a second component that is stacked on the first component and that is made of a material different from the first component; and at least one welded part that passes through the second component so as to reach the first component, wherein a proportion of an intermetallic compound present in the at least one welded part is from 15% to 60%, and the intermetallic compound includes a metal element that constitutes the first component, and a metal element that constitutes the second component. Further disclosed is a battery comprising the above welded metal component, wherein the second component serves as a bus bar, and the first component serves as an electrode for the battery.

Welded metal component and battery including the same

A sealed battery including: an electrode groupformed by winding or stacking a positive electrode plateand a negative electrode platewith a separatorinterposed between the positive electrode plateand the negative electrode plate, and housed in a battery case, an opening of the battery casebeing sealed with a sealing plate, wherein a leadextending from one of the electrode plates in the electrode groupis laser-welded to the sealing plate, and a melting width of an end sectionof a welded portionbetween the leadand the sealing plateis smaller than a melting width of a center section of the welded portion

Hermetically sealed battery and method for manufacturing the same

A battery modulecontaining parallel blocksconnected to a protection circuit via a lead plate, wherein the parallel blocksare welded to both sides of the lead plate without bending the lead plateinto a U shape. Thus it is possible to reduce the length of the lead plateand suppress a voltage drop on the lead plate. Further, since the lead plateis not bent into a U shape, the assembling accuracy of the battery module is improved and the battery module is easily packaged with a small size.

Battery module and method of manufacturing the same

A fusion welding method includes the steps of: generating a hybrid laser beam obtained by mixing a low-intensity laser beam with a first high-intensity laser beam and a second high-intensity laser beam; moving the hybrid laser beam along a gap between a first member and a second member; and melting the first member and the second member in the periphery of the gap with the hybrid laser beam, and filling the gap with the melt of the first member and the melt of the second member to weld the first member and the second member, wherein the first high-intensity laser beam is applied to the area of the first member to which the low-intensity laser beam is applied, and the second high-intensity laser beam is applied to the area of the second member to which the low-intensity laser beam is applied.

Method and apparatus for using multiple laser beams to weld members that are separated by a gap

An electrode groupformed by stacking or winding a positive electrode plateand a negative electrode platewith a separatorinterposed therebetween, is housed in a battery case. An opening of the battery caseis sealed with a sealing plate. A leadextending from one of the positive and negative electrode plates in the electrode groupis laser-welded to the sealing plateby application of a laser beamhaving a spot diameter smaller than a thickness of the lead

Sealed secondary battery, and method for manufacturing the battery

A method for manufacturing an optical unit () having an optical element () and a support member () supporting the optical element. According to the method, at least one of the optical element () and the support member () is deformed, securing the optical element () and the support member () together.

Optical unit and its manufacturing method

In an optical component where fixation of resin welding is performed by emitting a laser beam to screwing parts of an inner lens barrel and an outer lens barrel after focus adjustment, the laser beam is emitted to melt and cure a joint of the screwing part of the inner lens barrel and the screwing part of the outer lens barrel by 0.5 mm to 3.0 mm in a direction parallel to a direction of protrusion of the inner lens barrel relative to the outer lens barrel, so that welding and fixation are completed.

Manufacturing method of optical component and camera module

A ratio of a length of resin flow-in to a radius of an optical component is not larger than 0.25, and gas is blown directly against a laser irradiated part radially and diagonally downward from an upside position corresponding to a center of the optical component. A laser line beam having longer sides extending in a direction along an inner wall is cast by a laser radiation device while being moved in the direction of the longer sides.

Growing community of inventors

Osaka, Japan

Seiji Kumazawa