Honda Motor Co., Ltd.

Takashi Komaru

Masanori Okabe

Tomoko Tamai

Eiji Teramoto

Kohei Fukunishi

Tomoyuki Kume

A higher usage fee is set for external supply power as predetermined contract power increases. A battery management system includes: a contract power information acquisition section configured to acquire contract power information indicating the contract power; a power-in-use estimation section configured to estimate power in use in the storage plant in a target time zone in future; a discharge plan creation section configured to create a discharge plan in which discharge power from the battery is supplied as power to be used in the storage plant when the power in use in the target time zone exceeds the contract power; and a discharging control section configured to discharge the battery on the basis of the discharge plan. The power in use in the target time zone is estimated by the power-in-use estimation section.

Battery management system and battery management method

A process for producing a light absorbing layer for thin-film solar cell that possesses a film structure having a constituent component of chalcopyrite compound (Cu(In+Ga)Se) uniformly distributed thereinside. There is provided a process for producing a light absorbing layer, including the precursor forming step of superimposing on an Mo electrode layer, adjacent to the electrode layer, an In metal layer and a Cu&#x2014;Ga alloy layer according to sputtering technique; a first selenization step of, while accommodating precursor-provided substrate in an airtight space, introducing hydrogen selenide gas in the airtight space conditioned so as to range from room temperature to 250&#xb0; C.; a second selenization step of additionally introducing hydrogen selenide gas in the airtight space heated so as to range from 250&#xb0; to 450&#xb0; C.; a third selenization step of, while causing the hydrogen selenide gas having been introduced up to the second selenization step to remain, heating the interior of the airtight space so as to range from 450&#xb0; to 650&#xb0; C. and, within this range of temperature, performing heat treatment of the substrate; and a cooling step of cooling the substrate after the heat treatment.

Growing community of inventors

Tochigi, Japan

Takashi Komaru