Kabushiki Kaisha Toyota Chuo Kenkyusho

Keisuke Ishikawa

Shuji Tomura

Masanori Ishigaki

Naoki Yanagizawa

Shigeaki Goto

Shuntaro Inoue

Kenichi Takagi

A non-contact power transmission device is configured with which a primary circuit that supplies power and a secondary circuit that supplies the power supplied from the primary circuit to a load are coupled via a transformer, the non-contact power transmission device capable of connecting a storage battery and an application using the primary circuit and the secondary circuit.

Non-contact power transmission device, battery pack and power grid system in which said noncontact power transmission device is used, and power transmission method

A power supply device includes a battery circuit module group in which a plurality of battery circuit modules are connected in series via their output terminals. The power supply device further includes a control circuit configured to: output, at intervals of a certain time, a gate signal for turning on and off a first switching element and a second switching element of each battery circuit module to the battery circuit modules in the battery circuit module group; and select one of the battery circuit modules that receives an input of the gate signal to output a predetermined voltage from the power supply device.

Power supply device and control method for power supply device

A power supply device includes battery circuit modules each having a battery, a first switching element Sconnected in parallel to the battery, and a second switching element Sconnected in series to the battery between the battery and the first switching element S, the second switching element Sbeing turned off when the first switching element Sis turned on, a battery circuit module group in which the battery circuit modules are connected in series, and a control circuit for outputting, at intervals of a certain time, a gate signal for turning on and off the first switching element Sand the second switching element Sto the battery circuit modules.

The present disclosure intends to simplify the wiring structure of a switching circuit included in a power conversion apparatus. A feedback signal acquisitor acquires a power supply feedback signal corresponding to electric power transmitted from a power supply switching unit to a load switching unit, via coupling conductive elements, from the power supply switching unit. Alternatively, the feedback signal acquisitor acquires a load feedback signal corresponding to the electric power, via coupling conductive elements, from the load switching unit. A command signal generator generates a power supply switching command signal and a load switching command signal. A command signal transmitter transmits the power supply switching command signal to the power supply switching unit via the coupling conductive elements, and transmits the load switching command signal to the load switching unit via the coupling conductive elements.

Growing community of inventors

Nagakute, Japan

Keisuke Ishikawa