Mazda Motor Corporation

Rohm Co., Ltd.

Hiroaki Kashihara

Masashi Hayashiguchi

Takayuki Sato

Akihiro Noda

Hideki Yamada

Daisuke Tsuji

Hideki Hosoya

Yoshinori Ikeda

Yuta Otsuka

Shosuke Morimoto

Sho Kawanari

Toshihiko Kawamura

Kohichi Tanimoto

Haruki Yamane

Takashi Yoshizaki

Yusuke Kame

Noriharu Yamasaki

An inverter is disposed adjacent to a motor. The inverter includes a plurality of power modules, a smoothing capacitor, and busbars connecting the power modules and the smoothing capacitor. The plurality of power modules are disposed to be arranged along the periphery of the smoothing capacitor. The smoothing capacitor is disposed at a central portion of the inverter and also disposed in the inner portion of the inverter such that the smoothing capacitor and each of the power modules are arranged on the same plane.

Electric drive unit having arrangement constituting inverter to reduce busbar inductance and installation space

A smoothing capacitor is forcibly discharged, in a state where a battery is disconnected from a high-voltage circuit, first discharge control is initiated to consume electric charges of the smoothing capacitor by an in-vehicle component via a DC/DC converter. Thereafter, when a voltage of the smoothing capacitor is reduced and reaches a specified threshold, second discharge control is executed to forcibly discharge the electric charges in an active discharge circuit. In the case where continuous forced discharge occurs, delay control to delay execution timing of the second discharge control is further executed.

Forced discharge control system for smoothing capacitor provided to inverter

The lower structure of an electric vehicle includes: an automatic transmission provided below a floor panel and in an intermediate portion in a right-left direction thereof; an inverter arranged between the automatic transmission and a floor side frame; and an attachment bracket for attaching the inverter to the floor panel. The attachment bracket has an outer shell structure including: an inner wall portion dividing the inverter and the automatic transmission; an outer wall portion dividing the inverter and the floor side frame; an upper wall portion; and a lower wall portion.

Lower structure of an electric vehicle with collision protection for electronic components

Growing community of inventors

Hiroshima, Japan

Hiroaki Kashihara