Toyota Jidosha Kabushiki Kaisha

Tohoku University

Ikuo Nakagawa

Kiyohito Ishida

Tomohiro Matsuura

Kazuyuki Kusama

Yasushi Yamada

Kohki Nakamura

Ikuo Ohnuma

Yuji Yagi

Takashi Atsumi

Shigeki Takaiwa

Yoshikazu Takaku

Mikio Shirai

A method for manufacturing a bottomed cuboid battery container includes: forming a first member by folding one piece of a first flat sheet, the first member being constructed of a quadrilateral bottom surface and first paired side surfaces, the first paired side surfaces continuing from the bottom surface and being oppose each other; and forming the bottomed cuboid battery container by welding each of a second flat sheet and a third flat sheet to the first member such that the second flat sheet and the third flat sheet oppose each other and constitute second paired side surfaces. The second flat sheet and the first member are welded from one direction. The third flat sheet and the first member are welded from one direction.

Method for manufacturing bottomed cuboid battery container

A zinc based solder materialof the present invention is prepared by providing on the surface of a zinc based material, from which an oxide filmhas been removed or at which an oxide filmdoes not exist, with a coating layercontaining primarily a metal whose oxide is more easily reducible than the oxide film. In a joined body and a power semiconductor module of the present invention, the zinc based solder materialis used in the joining portion, and after joining, the coating layerdoes not exist.

Solder material, method for manufacturing the same, joined body, method for manufacturing the same, power semiconductor module, and method for manufacturing the same

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Kariya, Japan

Ikuo Nakagawa