Kabushiki Kaisha Toshiba

Hitoshi Nirasawa

Takashi Ogawa

Kaoru Koiwa

Hiroki Matsushita

Takeshi Yasuda

Kenji Murata

Hideo Yamasaki

Tomomi Kageyama

Takanori Kawachi

According to some embodiments, a battery control device has a current detector, a storage, and a state determiner. The current detector detects a current value of a current which flows into a second battery which is connected in parallel to a first battery. The first battery and the second battery are charged with a fixed current. The storage stores an initial value of the current which flows into the second battery if the second battery is charged with the fixed current in an initial use stage of the second battery. The state determiner determines a state of the first battery based on the current value detected by the current detector and the initial value stored in the storage.

Battery control device, battery system, and movable body

A fuel cell having a plurality of stacked single cells in each of which an electrolyte layer is held between an anode and a cathode and between which a separator is interposed, wherein the electrolyte layer includes a sheet for holding the electrolyte containing, as the main component thereof, fine powder having a function of holding the electrolyte, and reinforcing ceramic fiber disposed in the sheet for holding the electrolyte to substantially run parallel to the surface of the sheet for holding the electrolyte.

Fuel cell having electrolyte layer held between anode and cathode

Growing community of inventors

Meguro, Japan

Hitoshi Nirasawa