Kabushiki Kaisha Toshiba

Yuusuke Yamashita

Ryota Suzuki

Taihei Nakada

Tsuyoshi Kumamoto

Mami Mizutani

Yukitaka Monden

Yuji Okita

Masahiro Tanabe

Satoru Amaki

Susumu Nishida

According to one embodiment, a secondary battery control apparatus includes a charger/discharger and a charge/discharge controller. The charger/discharger connects a plurality of secondary batteries, and charges one secondary battery by electric power discharged by another secondary battery. The charge/discharge controller controls the charger/discharger such that charging and discharging are performed between the plurality of secondary batteries by using the charger/discharger if battery temperature information detected by temperature detector is lower than a preset threshold temperature, wherein the charging is stopped and switched to discharging or pause if voltage information detected by the voltage detector reaches the upper limit voltage of the secondary battery, and the discharging is stopped and switched to charging or pause if the voltage information detected by the voltage detector reaches the lower limit voltage of the secondary battery.

Battery control apparatus

A multilayer high-frequency circuit board includes a signal line, ground layers, and an interlayer circuit. A signal line where a high-frequency signal flows is formed in the signal line layer. The ground layers are laminated on both sides of the signal line layer, each of which is grounded. The interlayer circuit is provided in the signal line layer and includes a ground connecting portion connected to the ground layers and a signal line connecting portion connected to the signal line. One of the signal line connecting portion and the ground connecting portion surrounds an outer periphery of the other of the signal line connecting portion and the ground connecting portion concentrically with the one being separated from the outer periphery of the other along the signal line layer. An inner periphery of the one and the outer periphery of the other have a similar shape excluding a complete circle.

Multilayer high-frequency circuit board

A high frequency multilayer integrated circuit is provided with: a multilayer board including n earth conductor layers (n: integer of two or more than two) and (n-1) dielectric layers each arranged between adjacent earth conductor layers; a first high frequency circuit disposed in one of the most outside earth conductor layers of the multilayer board; a first power-supply/control circuit disposed in this most outside earth conductor layer; a second high frequency circuit disposed in at least one of the dielectric layers and connected to the first high frequency circuit in the multilayer board; a second power-supply/control circuit disposed in another one of the most outside earth conductor layers of the multilayer board; and a third power-supply/control circuit disposed in at least one of the dielectric layers at a portion at which the second high frequency circuit does not exist, the third power-supply/control circuit being connected to the first and second power-supply/control circuits.

High frequency multilayer integrated circuit

Growing community of inventors

Kawasaki, Japan

Yuusuke Yamashita