Air circulation passages (38A, 38B) are provided to connect a storage space Sp of an electronic control unit to the outside and to circulate air in order to buffer internal pressure fluctuations, a divided air circulation passage (41) is formed in which the storage space sides of the air circulation passages (38A, 38B) are divided into a plurality of passages, a cooling target member (16) is arranged so as to be in thermal contact with the air flowing through the divided air circulation passage (41), and the total cross-sectional area of the divided air circulation passage (41) is made smaller than the cross-sectional areas of the air circulation passages (38A, 38B) that have not been divided. As the storage space of the electronic control unit is connected to the outside by the air circulation passages, internal pressure fluctuations can be buffered, and the flow velocity of the air flowing through the divided air circulation passage on the storage space side of the air circulation passages can be increased to dissipate efficiently the heat from inside the storage space. These features make it possible to suppress internal pressure fluctuations in the storage space of the electronic control unit and efficiently dissipate heat generated in the electronic control unit to the outside.

    设置将电子控制部的收纳空间(Sp)与外部连接而使空气流通来缓冲内压变动的空气流通通路(38A、38B),将空气流通通路(38A、38B)的收纳空间侧作为被分割为多个通路的分割空气流通通路(41),以与在该分割空气流通通路(41)中流动的空气热接触的方式配置冷却对象部件(16),并且使分割空气流通通路(41)的总截面积比未被分割的空气流通通路(38A、38B)的截面积小。通过空气流通通路将电子控制部的收纳空间与外部连接,因此,能够对内压变动进行缓冲,进而能够加快在空气流通通路的收纳空间侧的分割空气流通通路中流动的空气的流速而将收纳空间内的热高效地向外部散热。通过这些结构,能够抑制电子控制部的收纳空间的内压变动,并且能够将由电子控制部产生的热高效地向外部散热。


    Access

    Download


    Export, share and cite



    Title :

    ELECTRIC DRIVE DEVICE AND ELECTRIC POWER STEERING DEVICE


    Additional title:

    电动驱动装置以及电动动力转向装置


    Contributors:

    Publication date :

    2021-09-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B62D MOTOR VEHICLES , Motorfahrzeuge / H05K PRINTED CIRCUITS , Gedruckte Schaltungen



    ELECTRIC DRIVE DEVICE AND ELECTRIC POWER STEERING DEVICE

    MORIMOTO MASAKAZU | European Patent Office | 2024

    Free access

    Electric drive device and electric power steering device

    KANAZAWA TAKURO / HAMADA KEIJI / MOTODA HARUAKI | European Patent Office | 2020

    Free access

    ELECTRIC DRIVE DEVICE AND ELECTRIC POWER STEERING DEVICE

    KAWATA MASAAKI | European Patent Office | 2020

    Free access

    ELECTRIC DRIVE DEVICE AND ELECTRIC POWER STEERING DEVICE

    FUJIMOTO MASAO / HAMADA KEIJI | European Patent Office | 2017

    Free access

    ELECTRIC DRIVE DEVICE AND ELECTRIC POWER STEERING DEVICE

    FUJIMOTO MASAO / HAMADA KEIJI / SAKASHITA TOMIO | European Patent Office | 2017

    Free access