Denso Corporation

Toyota Jidosha Kabushiki Kaisha

Denso Corpora Tion

Kentaro Hirose

Tomohisa Sano

Yohei Imai

Seido Araki

Daisuke Harada

Masaru Miyazaki

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

A power converter may be provided with: a stacking unit including semiconductor modules interposed between adjacent coolers; a capacitor disposed next to the stacking unit; a first bus bar; a second bus bar; and an insulating plate. The insulating plate is interposed between the first bus bar and the second bus bar, and includes cylinder portions. Each of the cylinder portions passes through corresponding one of third holes of the second bus bar, and allows corresponding one of branch portions of the first bus bar and corresponding one of terminals of the semiconductor modules to pass therethrough. An emitting angle of laser beam that bonds each of the terminals and the corresponding one of the branch portions is adjusted such that reflected beam of laser reaches the corresponding one of the cylinder portions. The cylinder portions are colored in a color comprising a wavelength of the laser.

Power converter and manufacturing method of the same

A power conversion device has semiconductor modules, a cooling unit, a capacitor module, a discharge resistance substrate, a control circuit substrate and a casing. The semiconductor modules from a power conversion circuit. The capacitor module is electrically connected to the semiconductor module. The discharge resistance is arranged on the discharge resistance substrate, and electrically discharges the capacitor module. The control circuit substrate controls operation of the semiconductor modules. The casing accommodates the semiconductor module, the cooling unit, the capacitor module, the discharge resistance substrate and the control circuit substrate. The discharge resistance substrate is arranged between an outer wall surface of the capacitor module and the control circuit substrate and arranged in a direction perpendicular to the control circuit substrate so that the discharge resistance substrate is separated in position from the outer wall surface of the capacitor module and the control circuit substrate.

Power conversion 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.

Growing community of inventors

Okazaki, Japan

Kentaro Hirose