Denso Corporation

Toyota Jidosha Kabushiki Kaisha

Toyoda Iron Works Co., Ltd.

Yohei Imai

Tomohisa Sano

Kentaro Hirose

Seido Araki

Ryota Tanabe

Daisuke Ueo

Daisuke Harada

Kunihiro Iwata

Takashi Hamatani

Shingo Miyamoto

Disclosed herein is a power supply device and a control method for the power supply device. The power supply device includes: a battery; an external interface electrically connected to the battery and electrically attachable to or detachable from an external device; a voltage converter provided between the battery and the external interface; a low-voltage circuit that branches from an interface connection circuit connecting the external interface and the voltage converter and is connected to a low-voltage load having a rated voltage lower than a voltage of the battery; an interrupt circuit provided in the low-voltage circuit and configured to electrically interrupt the low-voltage circuit and the interface connection circuit; and an electronic control unit configured to control operations of the voltage converter and the interrupt circuit. The electronic control unit operates the interrupt circuit when a voltage of the interface connection circuit exceeds the rated voltage of the low-voltage load.

Power supply device and control method for power supply device

An electric power converter includes a plurality of power modules, a capacitor, a positive bus bar, and a negative bus bar. Each of the power modules includes a positive terminal and a negative terminal on a side facing the capacitor. Leading ends of the positive terminal and negative terminal are parallel to the side. The positive bus bar includes a positive/negative base plate joined to a positive/negative electrode of the capacitor and a positive/negative flange bent from the positive/negative base plate. The positive/negative flange is joined to the positive/negative terminals of the power modules. The positive flange and the negative flange extend in directions away from the capacitor.

Electric power converter

In a capacitor device for transferring power between a power source and a target component including an electronic and/or electric component, at least one capacitor is housed in a capacitor case. A busbar is drawn out from the capacitor case. The busbar electrically connects the at least one capacitor to the target component. The capacitor case includes at least first, second, and third fixture members for fixation of the capacitor case. The third fixture member is located to be separated from a virtual line connecting between a first reference point of the first fixture member and a second reference point of the second fixture member, and located to be closer to the target component than the first and second fixture members are. The busbar is located to be closer to the third fixture member than to the virtual line.

Capacitor device

To provide a capacitor device capable of preventing thermal interference between a filter capacitor and a plurality of smoothing capacitors. A capacitor device provided in an energization circuit between a power source and a semiconductor module as a power supply device includes a filter capacitor for removing a noise included in a current supplied from a power input terminal, a plurality of smoothing capacitors for smoothing a voltage, and a capacitor case that houses the filter capacitor and the plurality of smoothing capacitors, and a first gap between the filter capacitor and a smoothing capacitor provided at a position closest to the filter capacitor among the plurality of smoothing capacitors is configured to be larger than a second gap between two smoothing capacitors adjacent to each other among the plurality of smoothing capacitors.

A power converter includes a capacitor, a case, and a filler. The case houses the capacitor and includes a metal plate and a partition wall. The filler is interposed between the case and the capacitor. The metal plate is positioned between the capacitor and another electronic component, inside the power converter. Also, the partition wall separates the capacitor from the metal plate.

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Aichi-gun, Japan

Yohei Imai