Nissan Motor Company Limited

Tamura Fa System Corporation

Takayuki Matsuoka

Atsushi Tanaka

Masanori Aoyagi

Yoshiaki Nitta

Yosuke Suzuki

Motohiro Yamane

Sohei Suga

Tamaki Miura

Toshiyuki Asai

Shinsaku Ehara

A control device of a secondary battery has a current detection unit () that detects a charge current to the secondary battery () and a discharge current from the secondary battery (); a calculation unit () that calculates, from the charge current and the discharge current, a charge-discharge efficiency and a discharge-charge efficiency when performing a charge operation and a discharge operation; a deterioration judgment unit () that judges a deterioration state of the secondary battery () from a temporal change rate of the charge-discharge efficiency and a temporal change rate of the discharge-charge efficiency; and a control unit () that sets a charge termination voltage of the secondary battery () in accordance with the deterioration state.

Secondary battery control device

A reflow furnace comprises: a carrier device to carry a printed circuit board with electronic components mounted thereon; a heating chamber to heat through an ambient gas the printed circuit board carried therein to solder the electronic components on a surface of the printed circuit board; and an ambient gas purification equipment including a retrieving device to retrieve a part of the ambient gas containing vaporized flux component when soldering, a heating device to heat the retrieved ambient gas to a desired temperature, an oxidation catalyst to burn the flux component contained in the heated ambient gas, and a returning device to return a high temperature gas after being burned to the heating chamber.

Reflow furnace

Growing community of inventors

Tokyo, Japan

Takayuki Matsuoka