公开(公告)号：US20220077731A1

公开(公告)日：2022-03-10

申请号：US17420831

申请日：2020-01-08

Applicant: Hitachi Astemo, Ltd.

Inventor： Takahiro ARAKI ,  Kinya NAKATSU ,  Takayoshi NAKAMURA ,  Akihiro NAMBA ,  Hiroyuki OOIWA ,  Hideki MIYAZAKI

IPC: H02K1/20 ,  H02K7/00 ,  H02K9/19 ,  H02K11/00 ,  H02K11/33 ,  B60L58/26

Abstract: An object of the present invention is to provide a wheel drive device capable of suppressing a temperature increase in an electric motor and a power conversion device and suppressing occurrence of a failure of an electric component. Provided are: an electric motor having a stator 60 and a rotor 40; a stator holder 80 that holds the stator 60; a power conversion device 100 that converts power supplied to the electric motor; and a wheel which accommodates the electric motor, the stator holder 80, and the power conversion device 100 on the inner peripheral side. The stator holder 80 includes a flow path 90 through which a cooling medium flows. The flow path 90 is arranged between the stator 60 and the power conversion device 100.