To avoid an increase of vibration noise due to Helmholtz resonance while compatibly suppressing a PCU case from decreasing in rigidity and having excellent mountability of components of a PCU.SOLUTION: A PCU case of an electric power control unit includes a case body which has a top surface-side opening and a reverse surface-side opening, and an upper cover covering the top surface-side opening. The case body includes a fastening part which is formed surrounding the reverse surface-side opening, and fastened to a top surface of a transaxle case, and a top surface of the transaxle case serves as a reverse surface of the PCU case. The case body includes a plate-like beam member which extends in a shorter direction to connect a pair of long-side side walls, and partitions the inside of the case body into an upper chamber and a lower chamber, and an intermediate opening which links the upper chamber and the lower chamber to each other. At least one of a plurality of components is supported by the beam member, and at least two of the plurality of components are electrically connected between the upper chamber and the lower chamber through the intermediate opening.SELECTED DRAWING: Figure 5

    【課題】PCUケースの剛性低下の抑制とPCUの構成部品の良好な搭載性とを両立させつつ、ヘルムホルツ共鳴に起因する振動騒音の増大を回避可能とする。【解決手段】電力制御ユニットのPCUケースは、上面側開口及び下面側開口を有し、長方形断面の筒状に形成されたケース本体と、上面側開口を覆うアッパーカバーとを含む。ケース本体は下面側開口を囲むように形成されトランスアクスルケースの表面に締結される締結部を含み、トランスアクスルケースの表面がPCUケースの下面を兼ねている。ケース本体は、短手方向に沿って延びて一対の長辺側側壁の間を繋ぎ、ケース本体の内部を上方室と下方室とに仕切る板状の梁部材と、上方室と下方室とを連通する中間開口とを含む。複数の構成部品の少なくとも1つは梁部材によって支持され、複数の構成部品の少なくとも2つは上方室と下方室との間で中間開口を介して電気的に接続されている。【選択図】図5


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    Titel :

    ELECTRIC POWER CONTROL UNIT


    Weitere Titelangaben:

    電力制御ユニット


    Beteiligte:
    MARUKAWA NAOKI (Autor:in) / YAGUCHI HIROSHI (Autor:in)

    Erscheinungsdatum :

    2021-09-09


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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