Kabushiki Kaisha Toshiba

Toyo Boseki Kabushiki Kaisha

Toshiba Corporation

Masayuki Hoshino

Tomokazu Morita

Takahiro Yamamoto

Masahiro Sekino

Shinichiro Kosugi

Takenori Kobayashi

Masatake Sakuma

Tomohiro Toyosaki

Toshihiro Kashima

Hiroaki Sakurai

Tokushiro Hirano

Masachika Nakano

According to one embodiment, there is provided a battery apparatus including a battery management device configured to receive voltages and temperatures of cells, and detection data of a current sensor, and a measuring computer configured to calculate a characteristic value of each cell or cell module, based on the detection data acquired from the battery management device at first time intervals, and to send, the acquired detection data or the calculated characteristic value to a control device at second time intervals which are longer than the first time intervals.

Battery apparatus and battery system

A calculation method causing a calculation apparatus configured to calculate a voltage of a battery to implement a computation capability includes: referring to a detection value database configured to store a charge amount of a battery and a voltage of the battery, the voltage being generated when the battery is charged, while associating the charge amount of the battery with the voltage of the battery, and a function information database configured to store a function representing a relationship between the voltage and a charge amount of each of a plurality of active materials included in the battery; and performing a regression calculation on the voltage of the battery that is stored in the detection value database, with an amount of the active materials of the function stored in the function information database being set as a variable.

Calculation method, calculation system, and calculation apparatus

According to one embodiment, a method for making a battery value evaluation index, includes applying a predetermined charge/discharge pattern to a predetermined battery, detecting a largest SOC value and a smallest SOC value of the predetermined battery, and setting a width between the largest SOC value and the smallest SOC value as 'A', detecting a charge limit SOC value at which the predetermined battery shows the highest SOC value, detecting a discharge limit SOC value at which the predetermined battery shows the lowest SOC value, and setting a width between the charge limit SOC value and the discharge limit SOC value as 'B', and determining that a life of the predetermined battery has ended in the predetermined charge/discharge pattern when a state of B&#x3e;A has changed into a state of B&#x2267;A.

Apparatus and method for making battery value index

There are disclosed fiber-reinforced plastic materials with a composite structure including at least two kinds of fibers as reinforcing materials, which have reciprocal thermal expansion and contraction properties, and a synthetic resin as a matrix. The fiber-reinforced plastic materials of the present invention have the excellent advantages of exhibiting an extremely small degree of deformation caused by their thermal contraction, even when used under cryogenic circumstances.

Fiber-reinforced plastic material comprising stacked woven fabrics of

Growing community of inventors

Yokohama, Japan

Masayuki Hoshino