Toyota Jidosha Kabushiki Kaisha

Hidetsugu Hamada

Akihiko Ide

Shohei Sunahara

Masatoshi Shinohara

Toshiya Hashimoto

Eiji Yamada

Yasutomo Kawabata

Shoichi Sasaki

Takao Miyatani

Shigetaka Nagamatsu

Masanao Shiomi

Shigeru Matsuhashi

Ryouji Mizutani

Kyomi Shimada

Shigeru Matuhashi

A power supply apparatus may include an electronic control unit. The electronic control unit may be configured to set target timing of switching of each of the switch. The electronic control unit may be configured to set the target timing in one cycle of a first carrier wave in accordance with first timing and in one cycle of a second carrier wave in accordance with second timing. The first timing may be two of timing in the one cycle of the first carrier wave that are defined by a first target duty ratio and the first carrier wave. The second timing may be two of timing in the one cycle of the second carrier wave that are defined by a second target duty ratio and the second carrier wave. The second carrier wave may be in the same cycle as the first carrier wave.

Power supply apparatus for setting target times of control signals

An electric power conversion system includes: a first battery; a second battery; an electric power converter including a plurality of switching elements, and configured to bidirectionally step up or step down electric power between an output line and each the first and second batteries in accordance with PWM signals; and a controller configured to control first and second step-up and step-down circuits by generating first and second PWM signals. The first and second step-up and step-down circuits are established between each first and second batteries and the output line. The first and second PWM signals are signals for controlling step-up and step-down operation of each first and second step-up and step-down circuit. The controller is configured to, when coupling on-duty periods of both the first and second PWM signals with each other, execute an overlap phase shift that partially overlaps the on-duty periods of the first and second PWM signals.

Electric power conversion system

A power supply system includes: a first battery; a second battery; a voltage converter including a plurality of switching elements; and a controller configured to turn on or off the plurality of switching elements in accordance with pulse width modulation control. The controller is configured to control phases of the pulse width modulation control signals such that the first high-level period of the first pulse width modulation control signal and the second high-level period of the second pulse width modulation control signal do not overlap with each other at a predetermined condition.

Power supply system

An electric power conversion unit of an electric power converter establishes two converter circuits including four switching elements and two batteries and carries out electric power conversion in a parallel mode in which the batteries are connected in parallel with each other. A controller is configured to set a control signal for each of the switching elements, identify a target switching element of which a temperature is suppressed, determine a state having a maximum loss value in correspondence with input-output data, and execute phase control for suppressing the maximum loss value.

Electric power converter

Power transmission apparatus, four-wheel drive vehicle with power

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Toyota, Japan

Hidetsugu Hamada