The invention provides an electric drive device and an electric power steering device capable of suppressing the area of power supply wiring in a circuit board and improving the reliability of the circuit board. The electric drive device includes a motor and an electronic control device that controls rotation of the motor. The electronic control device includes: a first circuit board on which a transistor for outputting a current for exciting a motor coil is mounted; a second circuit board having a control circuit for controlling the current supplied to the transistor; a power supply wiring module in which a choke coil for noise removal, a capacitor, and wiring for supplying power to at least one of the first circuit board and the second circuit board are molded using a resin; and a heat sink. The heat sink is sandwiched between the power supply wiring module and the second circuit board.
本发明提供能抑制电路基板内的电源布线的面积且提高电路基板的可靠性的电动驱动装置和电动助力转向装置。电动驱动装置具备马达和对马达的旋转进行控制的电子控制装置。电子控制装置具有:第1电路基板,其安装有晶体管,该晶体管输出对马达线圈进行励磁的电流;第2电路基板,其具有控制向晶体管供给的电流的控制电路;电源布线模块,其是用树脂对噪声去除用的扼流线圈、电容器、以及向第1电路基板和第2电路基板中的至少一者供电的布线进行模制而成的;以及散热器。散热器被电源布线模块和第2电路基板夹着。
Electric drive device and electric power steering device
电动驱动装置和电动助力转向装置
2024-10-22
Patent
Electronic Resource
Chinese
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