Nippon Light Metal Company, Ltd.

Soode Nagano Co., Ltd.

Murata Manufacturing Co., Ltd.

Masato Kobayashi

Takayuki Sode

Yukio Yoshino

Atsushi Sakurai

Shinichi Nomura

Yukinori Sugiyama

Yoshihiko Goto

Yuzo Katayama

Kotoe Ohta

Suguru Takaki

Hidefumi Nakanishi

Eijiro Horisawa

Yasuhide Horiuchi

Junko Kawasaki

A battery case lid is formed by working a metal plate, and includes a substrate section and an explosion-proof valve formed in the substrate section. The explosion-proof valve has a reduced thickness section thinner than the substrate section, and the reduced thickness section is formed by extending the metal plate by applying pressure while the metal plate is kept unrestrained.

Manufacturing method for battery case lid including explosion-proof valve

A battery case lid is formed by working a metal plate, and includes a substrate section and an explosion-proof valve formed in the substrate section. The explosion-proof valve has a reduced thickness section that is thinner than the substrate section, and the reduced thickness section is formed by extending the metal plate by applying pressure while the metal plate is kept unrestrained.

Provided is a battery case lid () formed by working a metal plate, including: a substrate section () and an explosion-proof valve () formed in the substrate section (), wherein the explosion-proof valve () has a reduced thickness section () thinner than the substrate section (), and the reduced thickness section () is formed by extending the metal plate by applying pressure while the metal plate is kept unrestrained.

Growing community of inventors

Niigata, Japan

Masato Kobayashi