Mitsubishi Electric Corporation

J.s.t.mfg. Co.,ltd.

Kohei Ando

Naoya Hashii

Daisuke Sasaki

Hirofumi Inoue

Makoto Shiraishi

Hiroshi Yamada

Ryohei Hayashi

Yoshifumi Mizuno

Naoki Honishi

Yoshitsugu Hirayama

Shingo Kitagawa

Goki Furuya

Koji Uyama

In a power conversion device, a semiconductor module, a bus bar assembly, and a smoothing capacitor are superposed on a cooler in the stated order from the cooler side. At least one of a cooling column-equipped member, which is at least one of the smoothing capacitor and the bus bar assembly, and the cooler is provided with a cooling column configured to transfer heat of the cooling column-equipped member to the cooler.

Power conversion device

A waterproof connector includes a contact, a housing, a seal member, and a cover member. An inserted portion of the housing is inserted in an insertion hole of a wall portion of a device case. The inserted portion includes an annular surface disposed flush to or with a step provided with respect to a surface of the wall portion. The seal member includes an annular first seal portion, fitted in an annular groove formed in the annular surface, and a covering portion, extending orthogonally from the first seal portion toward the surface side of the wall portion. The covering portion spanningly covers a first gap, which is a gap between an outer peripheral surface of the inserted portion and an inner peripheral surface of the insertion hole. The cover member is fixed to the wall portion across the covering portion. A second seal portion, providing sealing between the cover member and the surface of the wall portion, is formed by a portion of the covering portion that is sandwiched by the cover member and the front surface of the wall portion.

Waterproof connector and waterproof structure of device case

A power conversion device such that heat dissipation can be improved is obtained. The power conversion device includes a power conversion circuit unit that converts direct current into alternating current using a semiconductor switching element, a heatsink on which the power conversion circuit unit is mounted, and which has a first passage through which a cooling medium is caused to pass, and a frame body that houses the power conversion circuit unit, seals the power conversion circuit unit between the frame body and the heatsink, and has a second passage through which a cooling medium is caused to pass, wherein the first passage and second passage are connected at an interface between the heatsink and frame body, thereby configuring a cooling passage.

It is structured that plural service holes are provided on a surface of the casing, that a flange of a rubber plug for sealing the service hole has a lip seal that abuts against the casing of the power conversion equipment, that the rubber plug has a recessed section, that the surface of the casing is provided with a rib on an outer circumference side of the flange of the rubber plug, that an end surface of the rib is orthogonal to an axis of the service hole, and that a relationship of hhis established when a distance from an abutment surface of the lip seal to an end surface of the rubber plug on a side with the recessed section is set as hand a distance from the abutment surface of the lip seal to the end surface of the rib is set as h

Casing and rubber plug of power conversion equipment

Growing community of inventors

Tokyo, Japan

Kohei Ando