Kabushiki Kaisha Toshiba

Yasuhiro Miyamoto

Shinichiro Kosugi

Kazuto Kuroda

Nobuo Shibuya

Shuji Ono

Mami Mizutani

Ryuichi Morikawa

Fumiyuki Yamane

Takashi Akiba

According to one embodiment, a device includes a power management module to which a power is supplied from an external power source, a power source supply circuit to which a power is supplied from the power management module via a first input terminal, a latch circuit configured to be operated by a power supplied from the power supply circuit or a power supplied via a second input terminal, a circuit configured to output a logic signal that sets a shutdown signal output from the latch circuit to a third input terminal, and a logic communication circuit to which a logic signal is supplied via the third input terminal and which supplies the logic signal to a forth terminal of the larch circuit. The shutdown signal output from the latch circuit is set to an predetermined level when the logic signal is set to a second level from a first level.

Battery management device, secondary battery device, and vehicle

According to one embodiment, a communication circuit includes a direct-current converter circuit configured to generate a second power supply potential different from a second reference potential by a predetermined potential, from a first power supply potential, a first receiving circuit configured to receive a binary communication signal, whose one level is at a first reference potential, through a first signal input terminal, by a differential transmission method, a first level shift circuit configured to convert the communication signal received by the first receiving circuit into a binary communication signal, whose one level is at the second reference potential, and the other level is at the second power supply potential, and a first transmission circuit configured to output the binary communication signal converted by the first level shift circuit, through a first signal output terminal, by a differential transmission method.

Communication circuit to measure and communicate the state of a battery unit in a vehicle

According to one embodiment, the power supply management portion includes a timer configured to output an ON signal every time set by the control circuit, an OR circuit configured to receive supply of an output signal from the timer, an external signal supplied from outside, and a switch control signal output from the control circuit, and a switch circuit configured to switch output of the power source voltage from an external power source according to an output signal from the OR circuit, and the control circuit turns on a switch control signal after confirming which of the output signal from the timer or the external signal has turned on the switch circuit and turns off the switch control signal when both of the output signal from the timer and the signal supplied from outside are turned off.

Secondary battery device and vehicle

According to one embodiment, a secondary battery device includes a first assembled battery including a plurality of secondary battery cells, a second assembled battery including a plurality of secondary battery cells and connected in series to a low-potential terminal of the first assembled battery, a disconnecting module capable of mechanically switching connection between the first assembled battery and the second assembled battery, a voltage measurement circuit configured to measure voltages of the plurality of secondary battery cells of the second assembled battery, a first power source wiring connected between a high-potential terminal of the second assembled battery and the voltage measurement circuit, a second power source wiring connected between a low-potential terminal of the second assembled battery and the voltage measurement circuit, and a filter connected between the first power source wiring and the second power source wiring.

Growing community of inventors

Saku, Japan

Yasuhiro Miyamoto