Denso Corporation

Asmo Co., Ltd.

Yasuyoshi Toda

Hiroyuki Kawata

Takashi Tsuboi

Noriyuki Suzuki

Yuuji Yamashita

Naoki Matsuda

Toshihisa Yamamoto

Takayuki Uchida

Hiroyuki Miyaki

Katsuhisa Mase

An ECU attached to a motor assembly has a substrate and a heat sink. The substrate mounts thereon a microcomputer, which controls driving of a motor in accordance with a rotation angle of the motor. The substrate is fixed to the heat sink. The substrate has a first through hole group and a second through hole group, which are through holes connectable electrically by soldering to rotation angle signal wires connected to a rotation angle sensor, which detects a rotation angle of the motor.

Motor drive apparatus with substrate fixed, member and rotation angle sensor

In an ECU attached to a motor assembly, inverter FETs, which generate outputs for driving a motor, are electrically connected to a substrate. A plurality of screw holes is formed in a heat sink thereby to fix the substrate. A resin member is provided between the heat sink and the substrate and has a plurality of motor terminals and a resin mold, which integrally fix the motor terminals by molding the motor terminals. The motor terminal has an embedded part, a L-shaped substrate-side exposed part and a motor-side exposed side including a curbed part. The resin member and the substrate are tightened together and fixed to the heat sink.

Motor drive apparatus having a simplified assembling structure

A motor has a motor body and a control unit, which is joined to the motor body. A resolver is connected to the control unit through a flat cable. The flat cable is arranged such that the width direction of the flat cable corresponds with a circumferential direction of the motor body. The flat cable extends outwardly in a radial direction of the motor case.

Motor and motor for electric power steering

In a motor drive apparatus for driving a three-phase AC motor, a first mounting part of a heat sink is formed along an end. A second mounting part is formed in a direction perpendicular to the first mounting part and includes a first column part and a second column part. Three motor relay FETs are mounted on the first mounting part. Six inverter FETs and two power relay FETs are mounted on the second mounting part. Leads of the FETs are electrically connected to an electric circuit substrate. Heat generated by the FETs is radiated to the heat sink through an insulating and heat radiating sheet. By thus arranging the FETs, the motor drive apparatus is reduced in size.

Motor drive apparatus

A motor body has feeder terminals. Connecting ends of the corresponding feeder terminals are exposed radially outward from a motor case. The motor body has an end frame having an attachment portion. In this configuration, a control unit is fixed to the attachment portion and connecting terminals of the control unit are arranged to be allowed to contact the corresponding connecting ends. By fastening the fastening screws at positions radially outward of the motor case, the connecting terminals of the control unit are connected to the connecting ends of the motor body.

In an electric power steering system, a drain terminal side of a semiconductor relay is positioned to face a heat sink through an insulation film layer. The semiconductor relay has a source terminal between a gate terminal and a drain terminal. The source terminal is provided between the gate terminal and the drain terminal with respect to parts of the gate terminal, the drain terminal and the source terminal, which extend generally in parallel each other on the same plane.

Electric power conversion apparatus for vehicle

A connector fixation structure includes: a connector having a rectangular connector body, protrusions protruding from facing sides in a wing like manner, and a terminal embedded in and protruding from the connector body; a heat sink having a plate shape body, a through hole and columnar convexities; and a printed board. The bottom of the connector is inserted into the through hole of the heat sink. Each columnar convexity is disposed on the plate shape body at a predetermined position corresponding to the protrusion. The top of the connector contacts a first surface of the printed board, and each columnar convexity is fixed to the printed board via the corresponding protrusion with a first screw.

Fixation structure for connector of in-vehicle controller

An electronic control unit for producing a sufficiently boosted voltage even when a supply voltage becomes high includes an inverter that drives switching elements and converts a DC voltage into an AC voltage, and booster means which boosts a DC voltage that is input into a voltage to lie within a voltage range in which a voltage necessary for driving the switching elements is a lower-limit value and a maximum boosted voltage is an upper-limit value, and outputs the boosted voltage to the inverter.

Growing community of inventors

Toyohashi, Japan

Yasuyoshi Toda