Nidec Elesys Corporation

Hitoshi Kuroyanagi

Naoki Iwagami

Eiji Wada

Kazuki Harada

A vehicle-mounted electronic controller includes a motor case that accommodates an electric motor, a lid body of the motor case, power circuitry including switching circuits that supply driving signals to the electric motor, and control circuitry including a control circuit that controls the switching circuits. The case further accommodates the power circuitry and the control circuitry. The lower surface of the lid body contacts the power circuitry. Each of the case and the lid body has a heat radiation property. The upper surface of the lid body is exposed. A vehicle-mounted mechanically/electrically integrated electric motor includes the vehicle-mounted electronic controller and the electric motor.

Vehicle-mounted electronic control unit and vehicle-mounted mechanically/electrically integrated electric motor

An inverter control device to drive a motor includes a power module that supplies a driving current to the motor. The inverter control device further includes a power module board that outputs a driving signal to the power module, a control board that outputs a control signal to the power module board, and a smoothing capacitor. The power module, the power module board, the capacitor, and the control board are sequentially stacked and accommodated in a single casing made of a metal material, the power module being a bottommost layer. An input terminal of a power supply current is located on one side surface of the casing and an output terminal of a driving current of the motor is located on another side surface of the casing orthogonal to the one side surface, and the output terminal and a bus bar connected to the power module are directly connected to each other in a same plane.

Inverter control device

An inverter control device to drive a motor includes high-voltage circuitry that receives a power supply current and a power controller that supplies a driving current to a motor. The inverter control device further includes a first input terminal on a front surface portion of a casing of the high-voltage circuitry, a second input terminal on a power module in the power controller, and a first output terminal on a front surface portion of a casing of the power controller. Out of bus bars that electrically connect the first input terminal and the second input terminal to each other, a thickness of a bus bar on the first input terminal side is thicker than a bus bar on the second input terminal side.

Growing community of inventors

Kawasaki, Japan

Hitoshi Kuroyanagi