PROBLEM TO BE SOLVED: To provide a new electric driving device which suppresses enlargement in a radial direction of a housing storing an electronic control device, and can efficiently dissipate heat from the electronic control device to the outside.SOLUTION: An electronic control assembly is divided into a power supply circuit unit which has a main function of generating a power supply and is mounted on a metal substrate, a power conversion circuit unit which has a main function of driving an electric motor and is mounted on the metal substrate, and a control circuit unit which has a main function of controlling the power conversion circuit unit and is mounted on a resin substrate. A metal heat dissipation substrate which thermally contacts with a housing is arranged in the housing, the metal substrate of the power supply circuit unit and the power conversion circuit are fixed to both surfaces of the heat dissipation substrate, and heat from the power supply circuit unit and the power conversion circuit is dissipated to the housing through the heat dissipation substrate.SELECTED DRAWING: Figure 4
【課題】電子制御装置が収納されているハウジングが半径方向に大型化するのを抑制すると共に、電子制御装置からの熱を効率よく外部に放熱することができる新規な電動駆動装置を提供することにある。【解決手段】電子制御組立体を、電源の生成を主たる機能とする金属基板に実装された電源回路部と、電動モータの駆動を主たる機能とする金属基板に実装された電力変換回路部と、電力変換回路部の制御を主たる機能とする樹脂基板に実装された制御回路部とに分割し、更にハウジングと熱的に接触する金属製の放熱基体をハウジング内に配置し、電源回路部と電力変換回路の金属基板を放熱基体の両面に固定して電源回路部と電力変換回路からの熱を放熱基体を介してハウジングに放熱する。【選択図】図4
ELECTRIC DRIVING DEVICE AND ELECTRIC POWER STEERING DEVICE
電動駆動装置及び電動パワーステアリング装置
2016-04-14
Patent
Electronic Resource
Japanese
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