US 12,445,021 B2
Inverter-integrated rotating electrical machine that efficiently cools a smoothing capacitor
Ryota Sato, Kariya (JP); Yutaka Hotta, Kariya (JP); Yuya Mizuno, Kariya (JP); Satoshi Murakami, Kariya (JP); Keita Fukuda, Kariya (JP); and Hirosato Ihara, Kariya (JP)
Assigned to AISIN CORPORATION, Kariya (JP)
Appl. No. 18/036,529
Filed by AISIN CORPORATION, Aichi (JP)
PCT Filed Feb. 10, 2022, PCT No. PCT/JP2022/005464
§ 371(c)(1), (2) Date May 11, 2023,
PCT Pub. No. WO2022/173015, PCT Pub. Date Aug. 18, 2022.
Claims priority of application No. 2021-021047 (JP), filed on Feb. 12, 2021.
Prior Publication US 2024/0014714 A1, Jan. 11, 2024
Int. Cl. H02K 5/20 (2006.01); H02K 5/22 (2006.01); H02K 9/19 (2006.01); H02K 11/33 (2016.01)
CPC H02K 11/33 (2016.01) [H02K 5/20 (2013.01); H02K 5/225 (2013.01); H02K 9/19 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An inverter-integrated rotating electrical machine, comprising:
a rotating electrical machine including a rotor and a stator;
a housing member forming a housing chamber that houses the rotating electrical machine;
a cover member that covers an opening on one end side of the housing member in an axial direction, and that includes a support portion rotatably supporting the rotor;
a power switching element located between the cover member and the rotating electrical machine in the axial direction; and
a smoothing capacitor located between the cover member and the rotating electrical machine in the axial direction, wherein
the cover member includes a cooler that cools the power switching element and the smoothing capacitor,
the power switching element and the smoothing capacitor are connected to the cover member in a thermally conductive manner, the cooler includes a first coolant channel facing the power switching element, and a second coolant channel facing the smoothing capacitor, the cooler is located within a body of the cover member, and the cooler is located between the power switching element and an axial end face of the cover member along the axial direction and the cooler is located between the smoothing capacitor and the axial end face along the axial direction, the axial end face being an outermost face of the cover member.