Keihin Corporation

Hitachi Astemo Ltd.

Hiroaki Iida

Masami Ogura

Yasuhiro Maeda

Morifumi Shigemasa

Kazuya Nagasawa

Hitoshi Nishio

Shogo Tokita

A technology that prevents an encapsulation member encapsulating a semiconductor element from leaking between a resin-made casing and a heat dissipator is provided. A power conversion device includes a heat dissipator that includes a mount surface on which semiconductor elements are mounted, a resin-made casing that includes an intimate-contact surface that intimately contacts the mount surface, and which contains therein the semiconductor elements, and an encapsulation member that encapsulates the semiconductor elements within the casing. A first surrounding portion that surrounds the semiconductor elements is provided on the mount surface of the heat dissipator. A second surrounding portion that surrounds the semiconductor elements is provided on the intimate-contact surface of the casing. The first surrounding portion and the second surrounding portion are fitted with each other in the concavo-convex shape.

Power conversion device

A power conversion apparatushas a configuration in which a plate-like bus-baris disposed vertically so that a width direction thereof is set in a vertical direction, electrically connected to positive electric potential of a battery and fixed to a resin caseto include a flat plate-like bus-bar body, to which positive electric potential of the battery is applied, and a voltage measuring terminaltobranched from the bus-bar body. The voltage measuring terminaltoincludes a projecting portionprojecting from the bus-bar body, an upright portionextending from the projecting portionupward toward a circuit board, and a measuring terminal portionthat is an upper part of the upright portionand electrically connected to the circuit board

Power conversion apparatus

A power conversion apparatus has a configuration in which plate-like bus-bars are laminated via an insulating material to define a pair of bus-bars. A laminated bus-bar, in which the pair of bus-bars is disposed vertically so that a width direction thereof is in a vertical direction, includes a pair of voltage measuring terminals that is correspondingly branched from a part of the pair of bus-bars to extend toward a circuit board. The pair of voltage measuring terminals is arranged symmetrically with respect to the pair of bus-bars to extend upward toward the circuit board, while extending in an intersecting direction intersecting with the pair of bus-bars, to be electrically connected to the circuit board.

Growing community of inventors

Tochigi, Japan

Hiroaki Iida